diff --git a/.buildkite/docker-compose.py27.pg94.yaml b/.buildkite/docker-compose.py27.pg94.yaml
deleted file mode 100644
index 2d4b9eadd9..0000000000
--- a/.buildkite/docker-compose.py27.pg94.yaml
+++ /dev/null
@@ -1,21 +0,0 @@
-version: '3.1'
-
-services:
-
-  postgres:
-    image: postgres:9.4
-    environment:
-      POSTGRES_PASSWORD: postgres
-
-  testenv:
-    image: python:2.7
-    depends_on:
-      - postgres
-    env_file: .env
-    environment:
-      SYNAPSE_POSTGRES_HOST: postgres
-      SYNAPSE_POSTGRES_USER: postgres
-      SYNAPSE_POSTGRES_PASSWORD: postgres
-    working_dir: /app
-    volumes:
-      - ..:/app
diff --git a/.buildkite/docker-compose.py27.pg95.yaml b/.buildkite/docker-compose.py27.pg95.yaml
deleted file mode 100644
index c6a41f1da0..0000000000
--- a/.buildkite/docker-compose.py27.pg95.yaml
+++ /dev/null
@@ -1,21 +0,0 @@
-version: '3.1'
-
-services:
-
-  postgres:
-    image: postgres:9.5
-    environment:
-      POSTGRES_PASSWORD: postgres
-
-  testenv:
-    image: python:2.7
-    depends_on:
-      - postgres
-    env_file: .env
-    environment:
-      SYNAPSE_POSTGRES_HOST: postgres
-      SYNAPSE_POSTGRES_USER: postgres
-      SYNAPSE_POSTGRES_PASSWORD: postgres
-    working_dir: /app
-    volumes:
-      - ..:/app
diff --git a/.buildkite/docker-compose.py35.pg94.yaml b/.buildkite/docker-compose.py35.pg94.yaml
deleted file mode 100644
index 978aedd115..0000000000
--- a/.buildkite/docker-compose.py35.pg94.yaml
+++ /dev/null
@@ -1,21 +0,0 @@
-version: '3.1'
-
-services:
-
-  postgres:
-    image: postgres:9.4
-    environment:
-      POSTGRES_PASSWORD: postgres
-
-  testenv:
-    image: python:3.5
-    depends_on:
-      - postgres
-    env_file: .env
-    environment:
-      SYNAPSE_POSTGRES_HOST: postgres
-      SYNAPSE_POSTGRES_USER: postgres
-      SYNAPSE_POSTGRES_PASSWORD: postgres
-    working_dir: /app
-    volumes:
-      - ..:/app
diff --git a/.buildkite/format_tap.py b/.buildkite/format_tap.py
new file mode 100644
index 0000000000..94582f5571
--- /dev/null
+++ b/.buildkite/format_tap.py
@@ -0,0 +1,33 @@
+import sys
+from tap.parser import Parser
+from tap.line import Result, Unknown, Diagnostic
+
+out = ["### TAP Output for " + sys.argv[2]]
+
+p = Parser()
+
+in_error = False
+
+for line in p.parse_file(sys.argv[1]):
+    if isinstance(line, Result):
+        if in_error:
+            out.append("")
+            out.append("</pre></code></details>")
+            out.append("")
+            out.append("----")
+            out.append("")
+        in_error = False
+
+        if not line.ok and not line.todo:
+            in_error = True
+
+            out.append("FAILURE Test #%d: ``%s``" % (line.number, line.description))
+            out.append("")
+            out.append("<details><summary>Show log</summary><code><pre>")
+
+    elif isinstance(line, Diagnostic) and in_error:
+        out.append(line.text)
+
+if out:
+    for line in out[:-3]:
+        print(line)
diff --git a/.circleci/merge_base_branch.sh b/.buildkite/merge_base_branch.sh
similarity index 52%
rename from .circleci/merge_base_branch.sh
rename to .buildkite/merge_base_branch.sh
index 4c19fa70d7..26176d6465 100755
--- a/.circleci/merge_base_branch.sh
+++ b/.buildkite/merge_base_branch.sh
@@ -1,22 +1,21 @@
 #!/usr/bin/env bash
 
-set -e
+set -ex
 
-# CircleCI doesn't give CIRCLE_PR_NUMBER in the environment for non-forked PRs. Wonderful.
-# In this case, we just need to do some ~shell magic~ to strip it out of the PULL_REQUEST URL.
-echo 'export CIRCLE_PR_NUMBER="${CIRCLE_PR_NUMBER:-${CIRCLE_PULL_REQUEST##*/}}"' >> $BASH_ENV
-source $BASH_ENV
+if [[ "$BUILDKITE_BRANCH" =~ ^(develop|master|dinsic|shhs|release-.*)$ ]]; then
+    echo "Not merging forward, as this is a release branch"
+    exit 0
+fi
 
-if [[ -z "${CIRCLE_PR_NUMBER}" ]]
-then
-    echo "Can't figure out what the PR number is! Assuming merge target is develop."
+if [[ -z $BUILDKITE_PULL_REQUEST_BASE_BRANCH ]]; then
+    echo "Not a pull request, or hasn't had a PR opened yet..."
 
     # It probably hasn't had a PR opened yet. Since all PRs land on develop, we
     # can probably assume it's based on it and will be merged into it.
     GITBASE="develop"
 else
     # Get the reference, using the GitHub API
-    GITBASE=`wget -O- https://api.github.com/repos/matrix-org/synapse/pulls/${CIRCLE_PR_NUMBER} | jq -r '.base.ref'`
+    GITBASE=$BUILDKITE_PULL_REQUEST_BASE_BRANCH
 fi
 
 # Show what we are before
diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 44b258dca6..20c7aab5a7 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -2,6 +2,7 @@ env:
   CODECOV_TOKEN: "2dd7eb9b-0eda-45fe-a47c-9b5ac040045f"
 
 steps:
+
   - command:
       - "python -m pip install tox"
       - "tox -e pep8"
@@ -36,8 +37,6 @@ steps:
           image: "python:3.6"
           propagate-environment: true
 
-  - wait
-
   - command:
       - "python -m pip install tox"
       - "tox -e check-sampleconfig"
@@ -46,16 +45,25 @@ steps:
       - docker#v3.0.1:
           image: "python:3.6"
 
+  - wait
+
+
   - command:
       - "python -m pip install tox"
-      - "tox -e py27,codecov"
-    label: ":python: 2.7 / SQLite"
+      - "tox -e py35-old,codecov"
+    label: ":python: 3.5 / SQLite / Old Deps"
     env:
       TRIAL_FLAGS: "-j 2"
     plugins:
       - docker#v3.0.1:
-          image: "python:2.7"
+          image: "python:3.5"
           propagate-environment: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - command:
       - "python -m pip install tox"
@@ -67,6 +75,12 @@ steps:
       - docker#v3.0.1:
           image: "python:3.5"
           propagate-environment: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - command:
       - "python -m pip install tox"
@@ -78,6 +92,12 @@ steps:
       - docker#v3.0.1:
           image: "python:3.6"
           propagate-environment: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - command:
       - "python -m pip install tox"
@@ -89,50 +109,12 @@ steps:
       - docker#v3.0.1:
           image: "python:3.7"
           propagate-environment: true
-
-  - command:
-      - "python -m pip install tox"
-      - "tox -e py27-old,codecov"
-    label: ":python: 2.7 / SQLite / Old Deps"
-    env:
-      TRIAL_FLAGS: "-j 2"
-    plugins:
-      - docker#v3.0.1:
-          image: "python:2.7"
-          propagate-environment: true
-
-  - label: ":python: 2.7 / :postgres: 9.4"
-    env:
-      TRIAL_FLAGS: "-j 4"
-    command:
-      - "bash -c 'python -m pip install tox && python -m tox -e py27-postgres,codecov'"
-    plugins:
-      - docker-compose#v2.1.0:
-          run: testenv
-          config:
-            - .buildkite/docker-compose.py27.pg94.yaml
-
-  - label: ":python: 2.7 / :postgres: 9.5"
-    env:
-      TRIAL_FLAGS: "-j 4"
-    command:
-      - "bash -c 'python -m pip install tox && python -m tox -e py27-postgres,codecov'"
-    plugins:
-      - docker-compose#v2.1.0:
-          run: testenv
-          config:
-            - .buildkite/docker-compose.py27.pg95.yaml
-
-  - label: ":python: 3.5 / :postgres: 9.4"
-    env:
-      TRIAL_FLAGS: "-j 4"
-    command:
-      - "bash -c 'python -m pip install tox && python -m tox -e py35-postgres,codecov'"
-    plugins:
-      - docker-compose#v2.1.0:
-          run: testenv
-          config:
-            - .buildkite/docker-compose.py35.pg94.yaml
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - label: ":python: 3.5 / :postgres: 9.5"
     env:
@@ -144,6 +126,12 @@ steps:
           run: testenv
           config:
             - .buildkite/docker-compose.py35.pg95.yaml
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - label: ":python: 3.7 / :postgres: 9.5"
     env:
@@ -155,6 +143,12 @@ steps:
           run: testenv
           config:
             - .buildkite/docker-compose.py37.pg95.yaml
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
 
   - label: ":python: 3.7 / :postgres: 11"
     env:
@@ -166,3 +160,67 @@ steps:
           run: testenv
           config:
             - .buildkite/docker-compose.py37.pg11.yaml
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
+
+
+  - label: "SyTest - :python: 3.5 / SQLite / Monolith"
+    agents:
+      queue: "medium"
+    command:
+      - "bash .buildkite/merge_base_branch.sh"
+      - "bash .buildkite/synapse_sytest.sh"
+    plugins:
+      - docker#v3.0.1:
+          image: "matrixdotorg/sytest-synapse:py35"
+          propagate-environment: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
+
+  - label: "SyTest - :python: 3.5 / :postgres: 9.6 / Monolith"
+    agents:
+      queue: "medium"
+    env:
+      POSTGRES: "1"
+    command:
+      - "bash .buildkite/merge_base_branch.sh"
+      - "bash .buildkite/synapse_sytest.sh"
+    plugins:
+      - docker#v3.0.1:
+          image: "matrixdotorg/sytest-synapse:py35"
+          propagate-environment: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
+
+  - label: "SyTest - :python: 3.5 / :postgres: 9.6 / Workers"
+    agents:
+      queue: "medium"
+    env:
+      POSTGRES: "1"
+      WORKERS: "1"
+    command:
+      - "bash .buildkite/merge_base_branch.sh"
+      - "bash .buildkite/synapse_sytest.sh"
+    plugins:
+      - docker#v3.0.1:
+          image: "matrixdotorg/sytest-synapse:py35"
+          propagate-environment: true
+    soft_fail: true
+    retry:
+      automatic:
+        - exit_status: -1
+          limit: 2
+        - exit_status: 2
+          limit: 2
diff --git a/.buildkite/synapse_sytest.sh b/.buildkite/synapse_sytest.sh
new file mode 100644
index 0000000000..3011b88bb7
--- /dev/null
+++ b/.buildkite/synapse_sytest.sh
@@ -0,0 +1,145 @@
+#!/bin/bash
+#
+# Fetch sytest, and then run the tests for synapse. The entrypoint for the
+# sytest-synapse docker images.
+
+set -ex
+
+if [ -n "$BUILDKITE" ]
+then
+    SYNAPSE_DIR=`pwd`
+else
+    SYNAPSE_DIR="/src"
+fi
+
+# Attempt to find a sytest to use.
+# If /sytest exists, it means that a SyTest checkout has been mounted into the Docker image.
+if [ -d "/sytest" ]; then
+    # If the user has mounted in a SyTest checkout, use that.
+    echo "Using local sytests..."
+
+    # create ourselves a working directory and dos2unix some scripts therein
+    mkdir -p /work/jenkins
+    for i in install-deps.pl run-tests.pl tap-to-junit-xml.pl jenkins/prep_sytest_for_postgres.sh; do
+        dos2unix -n "/sytest/$i" "/work/$i"
+    done
+    ln -sf /sytest/tests /work
+    ln -sf /sytest/keys /work
+    SYTEST_LIB="/sytest/lib"
+else
+    if [ -n "BUILDKITE_BRANCH" ]
+    then
+        branch_name=$BUILDKITE_BRANCH
+    else
+        # Otherwise, try and find out what the branch that the Synapse checkout is using. Fall back to develop if it's not a branch.
+        branch_name="$(git --git-dir=/src/.git symbolic-ref HEAD 2>/dev/null)" || branch_name="develop"
+    fi
+
+    # Try and fetch the branch
+    echo "Trying to get same-named sytest branch..."
+    wget -q https://github.com/matrix-org/sytest/archive/$branch_name.tar.gz -O sytest.tar.gz || {
+        # Probably a 404, fall back to develop
+        echo "Using develop instead..."
+        wget -q https://github.com/matrix-org/sytest/archive/develop.tar.gz -O sytest.tar.gz
+    }
+
+    mkdir -p /work
+    tar -C /work --strip-components=1 -xf sytest.tar.gz
+    SYTEST_LIB="/work/lib"
+fi
+
+cd /work
+
+# PostgreSQL setup
+if [ -n "$POSTGRES" ]
+then
+    export PGUSER=postgres
+    export POSTGRES_DB_1=pg1
+    export POSTGRES_DB_2=pg2
+
+    # Start the database
+    su -c 'eatmydata /usr/lib/postgresql/9.6/bin/pg_ctl -w -D /var/lib/postgresql/data start' postgres
+
+    # Use the Jenkins script to write out the configuration for a PostgreSQL using Synapse
+    jenkins/prep_sytest_for_postgres.sh
+
+    # Make the test databases for the two Synapse servers that will be spun up
+    su -c 'psql -c "CREATE DATABASE pg1;"' postgres
+    su -c 'psql -c "CREATE DATABASE pg2;"' postgres
+
+fi
+
+if [ -n "$OFFLINE" ]; then
+    # if we're in offline mode, just put synapse into the virtualenv, and
+    # hope that the deps are up-to-date.
+    #
+    # (`pip install -e` likes to reinstall setuptools even if it's already installed,
+    # so we just run setup.py explicitly.)
+    #
+    (cd $SYNAPSE_DIR && /venv/bin/python setup.py -q develop)
+else
+    # We've already created the virtualenv, but lets double check we have all
+    # deps.
+    /venv/bin/pip install -q --upgrade --no-cache-dir -e $SYNAPSE_DIR
+    /venv/bin/pip install -q --upgrade --no-cache-dir \
+        lxml psycopg2 coverage codecov tap.py
+
+    # Make sure all Perl deps are installed -- this is done in the docker build
+    # so will only install packages added since the last Docker build
+    ./install-deps.pl
+fi
+
+
+# Run the tests
+>&2 echo "+++ Running tests"
+
+RUN_TESTS=(
+    perl -I "$SYTEST_LIB" ./run-tests.pl --python=/venv/bin/python --synapse-directory=$SYNAPSE_DIR --coverage -O tap --all
+)
+
+TEST_STATUS=0
+
+if [ -n "$WORKERS" ]; then
+    RUN_TESTS+=(-I Synapse::ViaHaproxy --dendron-binary=/pydron.py)
+else
+    RUN_TESTS+=(-I Synapse)
+fi
+
+"${RUN_TESTS[@]}" "$@" > results.tap || TEST_STATUS=$?
+
+if [ $TEST_STATUS -ne 0 ]; then
+    >&2 echo -e "run-tests \e[31mFAILED\e[0m: exit code $TEST_STATUS"
+else
+    >&2 echo -e "run-tests \e[32mPASSED\e[0m"
+fi
+
+>&2 echo "--- Copying assets"
+
+# Copy out the logs
+mkdir -p /logs
+cp results.tap /logs/results.tap
+rsync --ignore-missing-args  --min-size=1B -av server-0 server-1 /logs --include "*/" --include="*.log.*" --include="*.log" --exclude="*"
+
+# Upload coverage to codecov and upload files, if running on Buildkite
+if [ -n "$BUILDKITE" ]
+then
+    /venv/bin/coverage combine || true
+    /venv/bin/coverage xml || true
+    /venv/bin/codecov -X gcov -f coverage.xml
+
+    wget -O buildkite.tar.gz https://github.com/buildkite/agent/releases/download/v3.13.0/buildkite-agent-linux-amd64-3.13.0.tar.gz
+    tar xvf buildkite.tar.gz
+    chmod +x ./buildkite-agent
+
+    # Upload the files
+    ./buildkite-agent artifact upload "/logs/**/*.log*"
+    ./buildkite-agent artifact upload "/logs/results.tap"
+
+    if [ $TEST_STATUS -ne 0 ]; then
+        # Annotate, if failure
+        /venv/bin/python $SYNAPSE_DIR/.buildkite/format_tap.py /logs/results.tap "$BUILDKITE_LABEL" | ./buildkite-agent annotate --style="error" --context="$BUILDKITE_LABEL"
+    fi
+fi
+
+
+exit $TEST_STATUS
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 137747dae3..e4fd5ffa6b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,160 +4,23 @@ jobs:
     machine: true
     steps:
       - checkout
-      - run: docker build -f docker/Dockerfile --label gitsha1=${CIRCLE_SHA1} -t matrixdotorg/synapse:${CIRCLE_TAG}-py2 .
       - run: docker build -f docker/Dockerfile --label gitsha1=${CIRCLE_SHA1} -t matrixdotorg/synapse:${CIRCLE_TAG} -t matrixdotorg/synapse:${CIRCLE_TAG}-py3 --build-arg PYTHON_VERSION=3.6 .
       - run: docker login --username $DOCKER_HUB_USERNAME --password $DOCKER_HUB_PASSWORD
       - run: docker push matrixdotorg/synapse:${CIRCLE_TAG}
-      - run: docker push matrixdotorg/synapse:${CIRCLE_TAG}-py2
       - run: docker push matrixdotorg/synapse:${CIRCLE_TAG}-py3
   dockerhubuploadlatest:
     machine: true
     steps:
       - checkout
-      - run: docker build -f docker/Dockerfile --label gitsha1=${CIRCLE_SHA1} -t matrixdotorg/synapse:latest-py2 .
       - run: docker build -f docker/Dockerfile --label gitsha1=${CIRCLE_SHA1} -t matrixdotorg/synapse:latest -t matrixdotorg/synapse:latest-py3 --build-arg PYTHON_VERSION=3.6 .
       - run: docker login --username $DOCKER_HUB_USERNAME --password $DOCKER_HUB_PASSWORD
       - run: docker push matrixdotorg/synapse:latest
-      - run: docker push matrixdotorg/synapse:latest-py2
       - run: docker push matrixdotorg/synapse:latest-py3
-  sytestpy2:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy2
-    working_directory: /src
-    steps:
-      - checkout
-      - run: /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy2postgres:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy2
-    working_directory: /src
-    steps:
-      - checkout
-      - run: POSTGRES=1 /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy2merged:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy2
-    working_directory: /src
-    steps:
-      - checkout
-      - run: bash .circleci/merge_base_branch.sh
-      - run: /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy2postgresmerged:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy2
-    working_directory: /src
-    steps:
-      - checkout
-      - run: bash .circleci/merge_base_branch.sh
-      - run: POSTGRES=1 /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-
-  sytestpy3:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy3
-    working_directory: /src
-    steps:
-      - checkout
-      - run: /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy3postgres:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy3
-    working_directory: /src
-    steps:
-      - checkout
-      - run: POSTGRES=1 /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy3merged:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy3
-    working_directory: /src
-    steps:
-      - checkout
-      - run: bash .circleci/merge_base_branch.sh
-      - run: /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
-  sytestpy3postgresmerged:
-    docker:
-      - image: matrixdotorg/sytest-synapsepy3
-    working_directory: /src
-    steps:
-      - checkout
-      - run: bash .circleci/merge_base_branch.sh
-      - run: POSTGRES=1 /synapse_sytest.sh
-      - store_artifacts:
-          path: /logs
-          destination: logs
-      - store_test_results:
-          path: /logs
 
 workflows:
   version: 2
   build:
     jobs:
-      - sytestpy2:
-          filters:
-            branches:
-              only: /develop|master|release-.*/
-      - sytestpy2postgres:
-          filters:
-            branches:
-              only: /develop|master|release-.*/
-      - sytestpy3:
-          filters:
-            branches:
-              only: /develop|master|release-.*/
-      - sytestpy3postgres:
-          filters:
-            branches:
-              only: /develop|master|release-.*/
-      - sytestpy2merged:
-          filters:
-            branches:
-              ignore: /develop|master|release-.*/
-      - sytestpy2postgresmerged:
-          filters:
-            branches:
-              ignore: /develop|master|release-.*/
-      - sytestpy3merged:
-          filters:
-            branches:
-              ignore: /develop|master|release-.*/
-      - sytestpy3postgresmerged:
-          filters:
-            branches:
-              ignore: /develop|master|release-.*/
       - dockerhubuploadrelease:
           filters:
             tags:
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000000..1a57677a0e
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,4 @@
+# One username per supported platform and one custom link
+patreon: matrixdotorg
+liberapay: matrixdotorg
+custom: https://paypal.me/matrixdotorg
diff --git a/CHANGES.md b/CHANGES.md
index 490c2021e0..1b827c8079 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,290 @@
+Synapse 1.0.0 (2019-06-11)
+==========================
+
+Bugfixes
+--------
+
+- Fix bug where attempting to send transactions with large number of EDUs can fail. ([\#5418](https://github.com/matrix-org/synapse/issues/5418))
+
+
+Improved Documentation
+----------------------
+
+- Expand the federation guide to include relevant content from the MSC1711 FAQ ([\#5419](https://github.com/matrix-org/synapse/issues/5419))
+
+
+Internal Changes
+----------------
+
+- Move password reset links to /_matrix/client/unstable namespace. ([\#5424](https://github.com/matrix-org/synapse/issues/5424))
+
+
+Synapse 1.0.0rc3 (2019-06-10)
+=============================
+
+Security: Fix authentication bug introduced in 1.0.0rc1. Please upgrade to rc3 immediately
+
+
+Synapse 1.0.0rc2 (2019-06-10)
+=============================
+
+Bugfixes
+--------
+
+- Remove redundant warning about key server response validation. ([\#5392](https://github.com/matrix-org/synapse/issues/5392))
+- Fix bug where old keys stored in the database with a null valid until timestamp caused all verification requests for that key to fail. ([\#5415](https://github.com/matrix-org/synapse/issues/5415))
+- Fix excessive memory using with default `federation_verify_certificates: true` configuration. ([\#5417](https://github.com/matrix-org/synapse/issues/5417))
+
+
+Synapse 1.0.0rc1 (2019-06-07)
+=============================
+
+Features
+--------
+
+- Synapse now more efficiently collates room statistics. ([\#4338](https://github.com/matrix-org/synapse/issues/4338), [\#5260](https://github.com/matrix-org/synapse/issues/5260), [\#5324](https://github.com/matrix-org/synapse/issues/5324))
+- Add experimental support for relations (aka reactions and edits). ([\#5220](https://github.com/matrix-org/synapse/issues/5220))
+- Ability to configure default room version. ([\#5223](https://github.com/matrix-org/synapse/issues/5223), [\#5249](https://github.com/matrix-org/synapse/issues/5249))
+- Allow configuring a range for the account validity startup job. ([\#5276](https://github.com/matrix-org/synapse/issues/5276))
+- CAS login will now hit the r0 API, not the deprecated v1 one. ([\#5286](https://github.com/matrix-org/synapse/issues/5286))
+- Validate federation server TLS certificates by default (implements [MSC1711](https://github.com/matrix-org/matrix-doc/blob/master/proposals/1711-x509-for-federation.md)). ([\#5359](https://github.com/matrix-org/synapse/issues/5359))
+- Update /_matrix/client/versions to reference support for r0.5.0. ([\#5360](https://github.com/matrix-org/synapse/issues/5360))
+- Add a script to generate new signing-key files. ([\#5361](https://github.com/matrix-org/synapse/issues/5361))
+- Update upgrade and installation guides ahead of 1.0. ([\#5371](https://github.com/matrix-org/synapse/issues/5371))
+- Replace the `perspectives` configuration section with `trusted_key_servers`, and make validating the signatures on responses optional (since TLS will do this job for us). ([\#5374](https://github.com/matrix-org/synapse/issues/5374))
+- Add ability to perform password reset via email without trusting the identity server. ([\#5377](https://github.com/matrix-org/synapse/issues/5377))
+- Set default room version to v4. ([\#5379](https://github.com/matrix-org/synapse/issues/5379))
+
+
+Bugfixes
+--------
+
+- Fixes client-server API not sending "m.heroes" to lazy-load /sync requests when a rooms name or its canonical alias are empty. Thanks to @dnaf for this work! ([\#5089](https://github.com/matrix-org/synapse/issues/5089))
+- Prevent federation device list updates breaking when processing multiple updates at once. ([\#5156](https://github.com/matrix-org/synapse/issues/5156))
+- Fix worker registration bug caused by ClientReaderSlavedStore being unable to see get_profileinfo. ([\#5200](https://github.com/matrix-org/synapse/issues/5200))
+- Fix race when backfilling in rooms with worker mode. ([\#5221](https://github.com/matrix-org/synapse/issues/5221))
+- Fix appservice timestamp massaging. ([\#5233](https://github.com/matrix-org/synapse/issues/5233))
+- Ensure that server_keys fetched via a notary server are correctly signed. ([\#5251](https://github.com/matrix-org/synapse/issues/5251))
+- Show the correct error when logging out and access token is missing. ([\#5256](https://github.com/matrix-org/synapse/issues/5256))
+- Fix error code when there is an invalid parameter on /_matrix/client/r0/publicRooms ([\#5257](https://github.com/matrix-org/synapse/issues/5257))
+- Fix error when downloading thumbnail with missing width/height parameter. ([\#5258](https://github.com/matrix-org/synapse/issues/5258))
+- Fix schema update for account validity. ([\#5268](https://github.com/matrix-org/synapse/issues/5268))
+- Fix bug where we leaked extremities when we soft failed events, leading to performance degradation. ([\#5274](https://github.com/matrix-org/synapse/issues/5274), [\#5278](https://github.com/matrix-org/synapse/issues/5278), [\#5291](https://github.com/matrix-org/synapse/issues/5291))
+- Fix "db txn 'update_presence' from sentinel context" log messages. ([\#5275](https://github.com/matrix-org/synapse/issues/5275))
+- Fix dropped logcontexts during high outbound traffic. ([\#5277](https://github.com/matrix-org/synapse/issues/5277))
+- Fix a bug where it is not possible to get events in the federation format with the request `GET /_matrix/client/r0/rooms/{roomId}/messages`. ([\#5293](https://github.com/matrix-org/synapse/issues/5293))
+- Fix performance problems with the rooms stats background update. ([\#5294](https://github.com/matrix-org/synapse/issues/5294))
+- Fix noisy 'no key for server' logs. ([\#5300](https://github.com/matrix-org/synapse/issues/5300))
+- Fix bug where a notary server would sometimes forget old keys. ([\#5307](https://github.com/matrix-org/synapse/issues/5307))
+- Prevent users from setting huge displaynames and avatar URLs. ([\#5309](https://github.com/matrix-org/synapse/issues/5309))
+- Fix handling of failures when processing incoming events where calling `/event_auth` on remote server fails. ([\#5317](https://github.com/matrix-org/synapse/issues/5317))
+- Ensure that we have an up-to-date copy of the signing key when validating incoming federation requests. ([\#5321](https://github.com/matrix-org/synapse/issues/5321))
+- Fix various problems which made the signing-key notary server time out for some requests. ([\#5333](https://github.com/matrix-org/synapse/issues/5333))
+- Fix bug which would make certain operations (such as room joins) block for 20 minutes while attemoting to fetch verification keys. ([\#5334](https://github.com/matrix-org/synapse/issues/5334))
+- Fix a bug where we could rapidly mark a server as unreachable even though it was only down for a few minutes. ([\#5335](https://github.com/matrix-org/synapse/issues/5335), [\#5340](https://github.com/matrix-org/synapse/issues/5340))
+- Fix a bug where account validity renewal emails could only be sent when email notifs were enabled. ([\#5341](https://github.com/matrix-org/synapse/issues/5341))
+- Fix failure when fetching batches of events during backfill, etc. ([\#5342](https://github.com/matrix-org/synapse/issues/5342))
+- Add a new room version where the timestamps on events are checked against the validity periods on signing keys. ([\#5348](https://github.com/matrix-org/synapse/issues/5348), [\#5354](https://github.com/matrix-org/synapse/issues/5354))
+- Fix room stats and presence background updates to correctly handle missing events. ([\#5352](https://github.com/matrix-org/synapse/issues/5352))
+- Include left members in room summaries' heroes. ([\#5355](https://github.com/matrix-org/synapse/issues/5355))
+- Fix `federation_custom_ca_list` configuration option. ([\#5362](https://github.com/matrix-org/synapse/issues/5362))
+- Fix missing logcontext warnings on shutdown. ([\#5369](https://github.com/matrix-org/synapse/issues/5369))
+
+
+Improved Documentation
+----------------------
+
+- Fix docs on resetting the user directory. ([\#5282](https://github.com/matrix-org/synapse/issues/5282))
+- Fix notes about ACME in the MSC1711 faq. ([\#5357](https://github.com/matrix-org/synapse/issues/5357))
+
+
+Internal Changes
+----------------
+
+- Synapse will now serve the experimental "room complexity" API endpoint. ([\#5216](https://github.com/matrix-org/synapse/issues/5216))
+- The base classes for the v1 and v2_alpha REST APIs have been unified. ([\#5226](https://github.com/matrix-org/synapse/issues/5226), [\#5328](https://github.com/matrix-org/synapse/issues/5328))
+- Simplifications and comments in do_auth. ([\#5227](https://github.com/matrix-org/synapse/issues/5227))
+- Remove urllib3 pin as requests 2.22.0 has been released supporting urllib3 1.25.2. ([\#5230](https://github.com/matrix-org/synapse/issues/5230))
+- Preparatory work for key-validity features. ([\#5232](https://github.com/matrix-org/synapse/issues/5232), [\#5234](https://github.com/matrix-org/synapse/issues/5234), [\#5235](https://github.com/matrix-org/synapse/issues/5235), [\#5236](https://github.com/matrix-org/synapse/issues/5236), [\#5237](https://github.com/matrix-org/synapse/issues/5237), [\#5244](https://github.com/matrix-org/synapse/issues/5244), [\#5250](https://github.com/matrix-org/synapse/issues/5250), [\#5296](https://github.com/matrix-org/synapse/issues/5296), [\#5299](https://github.com/matrix-org/synapse/issues/5299), [\#5343](https://github.com/matrix-org/synapse/issues/5343), [\#5347](https://github.com/matrix-org/synapse/issues/5347), [\#5356](https://github.com/matrix-org/synapse/issues/5356))
+- Specify the type of reCAPTCHA key to use. ([\#5283](https://github.com/matrix-org/synapse/issues/5283))
+- Improve sample config for monthly active user blocking. ([\#5284](https://github.com/matrix-org/synapse/issues/5284))
+- Remove spurious debug from MatrixFederationHttpClient.get_json. ([\#5287](https://github.com/matrix-org/synapse/issues/5287))
+- Improve logging for logcontext leaks. ([\#5288](https://github.com/matrix-org/synapse/issues/5288))
+- Clarify that the admin change password API logs the user out. ([\#5303](https://github.com/matrix-org/synapse/issues/5303))
+- New installs will now use the v54 full schema, rather than the full schema v14 and applying incremental updates to v54. ([\#5320](https://github.com/matrix-org/synapse/issues/5320))
+- Improve docstrings on MatrixFederationClient. ([\#5332](https://github.com/matrix-org/synapse/issues/5332))
+- Clean up FederationClient.get_events for clarity. ([\#5344](https://github.com/matrix-org/synapse/issues/5344))
+- Various improvements to debug logging. ([\#5353](https://github.com/matrix-org/synapse/issues/5353))
+- Don't run CI build checks until sample config check has passed. ([\#5370](https://github.com/matrix-org/synapse/issues/5370))
+- Automatically retry buildkite builds (max twice) when an agent is lost. ([\#5380](https://github.com/matrix-org/synapse/issues/5380))
+
+
+Synapse 0.99.5.2 (2019-05-30)
+=============================
+
+Bugfixes
+--------
+
+- Fix bug where we leaked extremities when we soft failed events, leading to performance degradation. ([\#5274](https://github.com/matrix-org/synapse/issues/5274), [\#5278](https://github.com/matrix-org/synapse/issues/5278), [\#5291](https://github.com/matrix-org/synapse/issues/5291))
+
+
+Synapse 0.99.5.1 (2019-05-22)
+=============================
+
+0.99.5.1 supersedes 0.99.5 due to malformed debian changelog - no functional changes.
+
+Synapse 0.99.5 (2019-05-22)
+===========================
+
+No significant changes.
+
+
+Synapse 0.99.5rc1 (2019-05-21)
+==============================
+
+Features
+--------
+
+- Add ability to blacklist IP ranges for the federation client. ([\#5043](https://github.com/matrix-org/synapse/issues/5043))
+- Ratelimiting configuration for clients sending messages and the federation server has been altered to match login ratelimiting. The old configuration names will continue working. Check the sample config for details of the new names. ([\#5181](https://github.com/matrix-org/synapse/issues/5181))
+- Drop support for the undocumented /_matrix/client/v2_alpha API prefix. ([\#5190](https://github.com/matrix-org/synapse/issues/5190))
+- Add an option to disable per-room profiles. ([\#5196](https://github.com/matrix-org/synapse/issues/5196))
+- Stick an expiration date to any registered user missing one at startup if account validity is enabled. ([\#5204](https://github.com/matrix-org/synapse/issues/5204))
+- Add experimental support for relations (aka reactions and edits). ([\#5209](https://github.com/matrix-org/synapse/issues/5209), [\#5211](https://github.com/matrix-org/synapse/issues/5211), [\#5203](https://github.com/matrix-org/synapse/issues/5203), [\#5212](https://github.com/matrix-org/synapse/issues/5212))
+- Add a room version 4 which uses a new event ID format, as per [MSC2002](https://github.com/matrix-org/matrix-doc/pull/2002). ([\#5210](https://github.com/matrix-org/synapse/issues/5210), [\#5217](https://github.com/matrix-org/synapse/issues/5217))
+
+
+Bugfixes
+--------
+
+- Fix image orientation when generating thumbnails (needs pillow>=4.3.0). Contributed by Pau Rodriguez-Estivill. ([\#5039](https://github.com/matrix-org/synapse/issues/5039))
+- Exclude soft-failed events from forward-extremity candidates: fixes "No forward extremities left!" error. ([\#5146](https://github.com/matrix-org/synapse/issues/5146))
+- Re-order stages in registration flows such that msisdn and email verification are done last. ([\#5174](https://github.com/matrix-org/synapse/issues/5174))
+- Fix 3pid guest invites. ([\#5177](https://github.com/matrix-org/synapse/issues/5177))
+- Fix a bug where the register endpoint would fail with M_THREEPID_IN_USE instead of returning an account previously registered in the same session. ([\#5187](https://github.com/matrix-org/synapse/issues/5187))
+- Prevent registration for user ids that are too long to fit into a state key. Contributed by Reid Anderson. ([\#5198](https://github.com/matrix-org/synapse/issues/5198))
+- Fix incompatibility between ACME support and Python 3.5.2. ([\#5218](https://github.com/matrix-org/synapse/issues/5218))
+- Fix error handling for rooms whose versions are unknown. ([\#5219](https://github.com/matrix-org/synapse/issues/5219))
+
+
+Internal Changes
+----------------
+
+- Make /sync attempt to return device updates for both joined and invited users. Note that this doesn't currently work correctly due to other bugs. ([\#3484](https://github.com/matrix-org/synapse/issues/3484))
+- Update tests to consistently be configured via the same code that is used when loading from configuration files. ([\#5171](https://github.com/matrix-org/synapse/issues/5171), [\#5185](https://github.com/matrix-org/synapse/issues/5185))
+- Allow client event serialization to be async. ([\#5183](https://github.com/matrix-org/synapse/issues/5183))
+- Expose DataStore._get_events as get_events_as_list. ([\#5184](https://github.com/matrix-org/synapse/issues/5184))
+- Make generating SQL bounds for pagination generic. ([\#5191](https://github.com/matrix-org/synapse/issues/5191))
+- Stop telling people to install the optional dependencies by default. ([\#5197](https://github.com/matrix-org/synapse/issues/5197))
+
+
+Synapse 0.99.4 (2019-05-15)
+===========================
+
+No significant changes.
+
+
+Synapse 0.99.4rc1 (2019-05-13)
+==============================
+
+Features
+--------
+
+- Add systemd-python to the optional dependencies to enable logging to the systemd journal. Install with `pip install matrix-synapse[systemd]`. ([\#4339](https://github.com/matrix-org/synapse/issues/4339))
+- Add a default .m.rule.tombstone push rule. ([\#4867](https://github.com/matrix-org/synapse/issues/4867))
+- Add ability for password provider modules to bind email addresses to users upon registration. ([\#4947](https://github.com/matrix-org/synapse/issues/4947))
+- Implementation of [MSC1711](https://github.com/matrix-org/matrix-doc/pull/1711) including config options for requiring valid TLS certificates for federation traffic, the ability to disable TLS validation for specific domains, and the ability to specify your own list of CA certificates. ([\#4967](https://github.com/matrix-org/synapse/issues/4967))
+- Remove presence list support as per MSC 1819. ([\#4989](https://github.com/matrix-org/synapse/issues/4989))
+- Reduce CPU usage starting pushers during start up. ([\#4991](https://github.com/matrix-org/synapse/issues/4991))
+- Add a delete group admin API. ([\#5002](https://github.com/matrix-org/synapse/issues/5002))
+- Add config option to block users from looking up 3PIDs. ([\#5010](https://github.com/matrix-org/synapse/issues/5010))
+- Add context to phonehome stats. ([\#5020](https://github.com/matrix-org/synapse/issues/5020))
+- Configure the example systemd units to have a log identifier of `matrix-synapse`
+  instead of the executable name, `python`.
+  Contributed by Christoph Müller. ([\#5023](https://github.com/matrix-org/synapse/issues/5023))
+- Add time-based account expiration. ([\#5027](https://github.com/matrix-org/synapse/issues/5027), [\#5047](https://github.com/matrix-org/synapse/issues/5047), [\#5073](https://github.com/matrix-org/synapse/issues/5073), [\#5116](https://github.com/matrix-org/synapse/issues/5116))
+- Add support for handling `/versions`, `/voip` and `/push_rules` client endpoints to client_reader worker. ([\#5063](https://github.com/matrix-org/synapse/issues/5063), [\#5065](https://github.com/matrix-org/synapse/issues/5065), [\#5070](https://github.com/matrix-org/synapse/issues/5070))
+- Add a configuration option to require authentication on /publicRooms and /profile endpoints. ([\#5083](https://github.com/matrix-org/synapse/issues/5083))
+- Move admin APIs to `/_synapse/admin/v1`. (The old paths are retained for backwards-compatibility, for now). ([\#5119](https://github.com/matrix-org/synapse/issues/5119))
+- Implement an admin API for sending server notices. Many thanks to @krombel who provided a foundation for this work. ([\#5121](https://github.com/matrix-org/synapse/issues/5121), [\#5142](https://github.com/matrix-org/synapse/issues/5142))
+
+
+Bugfixes
+--------
+
+- Avoid redundant URL encoding of redirect URL for SSO login in the fallback login page. Fixes a regression introduced in [#4220](https://github.com/matrix-org/synapse/pull/4220). Contributed by Marcel Fabian Krüger ("[zaugin](https://github.com/zauguin)"). ([\#4555](https://github.com/matrix-org/synapse/issues/4555))
+- Fix bug where presence updates were sent to all servers in a room when a new server joined, rather than to just the new server. ([\#4942](https://github.com/matrix-org/synapse/issues/4942), [\#5103](https://github.com/matrix-org/synapse/issues/5103))
+- Fix sync bug which made accepting invites unreliable in worker-mode synapses. ([\#4955](https://github.com/matrix-org/synapse/issues/4955), [\#4956](https://github.com/matrix-org/synapse/issues/4956))
+- start.sh: Fix the --no-rate-limit option for messages and make it bypass rate limit on registration and login too. ([\#4981](https://github.com/matrix-org/synapse/issues/4981))
+- Transfer related groups on room upgrade. ([\#4990](https://github.com/matrix-org/synapse/issues/4990))
+- Prevent the ability to kick users from a room they aren't in. ([\#4999](https://github.com/matrix-org/synapse/issues/4999))
+- Fix issue #4596 so synapse_port_db script works with --curses option on Python 3. Contributed by Anders Jensen-Waud <anders@jensenwaud.com>. ([\#5003](https://github.com/matrix-org/synapse/issues/5003))
+- Clients timing out/disappearing while downloading from the media repository will now no longer log a spurious "Producer was not unregistered" message. ([\#5009](https://github.com/matrix-org/synapse/issues/5009))
+- Fix "cannot import name execute_batch" error with postgres. ([\#5032](https://github.com/matrix-org/synapse/issues/5032))
+- Fix disappearing exceptions in manhole. ([\#5035](https://github.com/matrix-org/synapse/issues/5035))
+- Workaround bug in twisted where attempting too many concurrent DNS requests could cause it to hang due to running out of file descriptors. ([\#5037](https://github.com/matrix-org/synapse/issues/5037))
+- Make sure we're not registering the same 3pid twice on registration. ([\#5071](https://github.com/matrix-org/synapse/issues/5071))
+- Don't crash on lack of expiry templates. ([\#5077](https://github.com/matrix-org/synapse/issues/5077))
+- Fix the ratelimiting on third party invites. ([\#5104](https://github.com/matrix-org/synapse/issues/5104))
+- Add some missing limitations to room alias creation. ([\#5124](https://github.com/matrix-org/synapse/issues/5124), [\#5128](https://github.com/matrix-org/synapse/issues/5128))
+- Limit the number of EDUs in transactions to 100 as expected by synapse. Thanks to @superboum for this work! ([\#5138](https://github.com/matrix-org/synapse/issues/5138))
+
+Internal Changes
+----------------
+
+- Add test to verify threepid auth check added in #4435. ([\#4474](https://github.com/matrix-org/synapse/issues/4474))
+- Fix/improve some docstrings in the replication code. ([\#4949](https://github.com/matrix-org/synapse/issues/4949))
+- Split synapse.replication.tcp.streams into smaller files. ([\#4953](https://github.com/matrix-org/synapse/issues/4953))
+- Refactor replication row generation/parsing. ([\#4954](https://github.com/matrix-org/synapse/issues/4954))
+- Run `black` to clean up formatting on `synapse/storage/roommember.py` and `synapse/storage/events.py`. ([\#4959](https://github.com/matrix-org/synapse/issues/4959))
+- Remove log line for password via the admin API. ([\#4965](https://github.com/matrix-org/synapse/issues/4965))
+- Fix typo in TLS filenames in docker/README.md. Also add the '-p' commandline option to the 'docker run' example. Contributed by Jurrie Overgoor. ([\#4968](https://github.com/matrix-org/synapse/issues/4968))
+- Refactor room version definitions. ([\#4969](https://github.com/matrix-org/synapse/issues/4969))
+- Reduce log level of .well-known/matrix/client responses. ([\#4972](https://github.com/matrix-org/synapse/issues/4972))
+- Add `config.signing_key_path` that can be read by `synapse.config` utility. ([\#4974](https://github.com/matrix-org/synapse/issues/4974))
+- Track which identity server is used when binding a threepid and use that for unbinding, as per MSC1915. ([\#4982](https://github.com/matrix-org/synapse/issues/4982))
+- Rewrite KeyringTestCase as a HomeserverTestCase. ([\#4985](https://github.com/matrix-org/synapse/issues/4985))
+- README updates: Corrected the default POSTGRES_USER. Added port forwarding hint in TLS section. ([\#4987](https://github.com/matrix-org/synapse/issues/4987))
+- Remove a number of unused tables from the database schema. ([\#4992](https://github.com/matrix-org/synapse/issues/4992), [\#5028](https://github.com/matrix-org/synapse/issues/5028), [\#5033](https://github.com/matrix-org/synapse/issues/5033))
+- Run `black` on the remainder of `synapse/storage/`. ([\#4996](https://github.com/matrix-org/synapse/issues/4996))
+- Fix grammar in get_current_users_in_room and give it a docstring. ([\#4998](https://github.com/matrix-org/synapse/issues/4998))
+- Clean up some code in the server-key Keyring. ([\#5001](https://github.com/matrix-org/synapse/issues/5001))
+- Convert SYNAPSE_NO_TLS Docker variable to boolean for user friendliness. Contributed by Gabriel Eckerson. ([\#5005](https://github.com/matrix-org/synapse/issues/5005))
+- Refactor synapse.storage._base._simple_select_list_paginate. ([\#5007](https://github.com/matrix-org/synapse/issues/5007))
+- Store the notary server name correctly in server_keys_json. ([\#5024](https://github.com/matrix-org/synapse/issues/5024))
+- Rewrite Datastore.get_server_verify_keys to reduce the number of database transactions. ([\#5030](https://github.com/matrix-org/synapse/issues/5030))
+- Remove extraneous period from copyright headers. ([\#5046](https://github.com/matrix-org/synapse/issues/5046))
+- Update documentation for where to get Synapse packages. ([\#5067](https://github.com/matrix-org/synapse/issues/5067))
+- Add workarounds for pep-517 install errors. ([\#5098](https://github.com/matrix-org/synapse/issues/5098))
+- Improve logging when event-signature checks fail. ([\#5100](https://github.com/matrix-org/synapse/issues/5100))
+- Factor out an "assert_requester_is_admin" function. ([\#5120](https://github.com/matrix-org/synapse/issues/5120))
+- Remove the requirement to authenticate for /admin/server_version. ([\#5122](https://github.com/matrix-org/synapse/issues/5122))
+- Prevent an exception from being raised in a IResolutionReceiver and use a more generic error message for blacklisted URL previews. ([\#5155](https://github.com/matrix-org/synapse/issues/5155))
+- Run `black` on the tests directory. ([\#5170](https://github.com/matrix-org/synapse/issues/5170))
+- Fix CI after new release of isort. ([\#5179](https://github.com/matrix-org/synapse/issues/5179))
+- Fix bogus imports in unit tests. ([\#5154](https://github.com/matrix-org/synapse/issues/5154))
+
+
+Synapse 0.99.3.2 (2019-05-03)
+=============================
+
+Internal Changes
+----------------
+
+- Ensure that we have `urllib3` <1.25, to resolve incompatibility with `requests`. ([\#5135](https://github.com/matrix-org/synapse/issues/5135))
+
+
+Synapse 0.99.3.1 (2019-05-03)
+=============================
+
+Security update
+---------------
+
+This release includes two security fixes:
+
+- Switch to using a cryptographically-secure random number generator for token strings, ensuring they cannot be predicted by an attacker. Thanks to @opnsec for identifying and responsibly disclosing this issue! ([\#5133](https://github.com/matrix-org/synapse/issues/5133))
+- Blacklist 0.0.0.0 and :: by default for URL previews. Thanks to @opnsec for identifying and responsibly disclosing this issue too! ([\#5134](https://github.com/matrix-org/synapse/issues/5134))
+
 Synapse 0.99.3 (2019-04-01)
 ===========================
 
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 9a283ced6e..2c44422a0e 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -30,21 +30,20 @@ use github's pull request workflow to review the contribution, and either ask
 you to make any refinements needed or merge it and make them ourselves. The
 changes will then land on master when we next do a release.
 
-We use `CircleCI <https://circleci.com/gh/matrix-org>`_ and `Travis CI
-<https://travis-ci.org/matrix-org/synapse>`_ for continuous integration. All
-pull requests to synapse get automatically tested by Travis and CircleCI.
-If your change breaks the build, this will be shown in GitHub, so please
-keep an eye on the pull request for feedback.
+We use `CircleCI <https://circleci.com/gh/matrix-org>`_ and `Buildkite
+<https://buildkite.com/matrix-dot-org/synapse>`_ for continuous integration.
+Buildkite builds need to be authorised by a maintainer. If your change breaks
+the build, this will be shown in GitHub, so please keep an eye on the pull
+request for feedback.
 
 To run unit tests in a local development environment, you can use:
 
-- ``tox -e py27`` (requires tox to be installed by ``pip install tox``) for
-  SQLite-backed Synapse on Python 2.7.
-- ``tox -e py35`` for SQLite-backed Synapse on Python 3.5.
+- ``tox -e py35`` (requires tox to be installed by ``pip install tox``)
+  for SQLite-backed Synapse on Python 3.5.
 - ``tox -e py36`` for SQLite-backed Synapse on Python 3.6.
-- ``tox -e py27-postgres`` for PostgreSQL-backed Synapse on Python 2.7
+- ``tox -e py36-postgres`` for PostgreSQL-backed Synapse on Python 3.6
   (requires a running local PostgreSQL with access to create databases).
-- ``./test_postgresql.sh`` for PostgreSQL-backed Synapse on Python 2.7
+- ``./test_postgresql.sh`` for PostgreSQL-backed Synapse on Python 3.5
   (requires Docker). Entirely self-contained, recommended if you don't want to
   set up PostgreSQL yourself.
 
diff --git a/INSTALL.md b/INSTALL.md
index a5c3c6efaa..2df686b19b 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,13 +1,14 @@
-* [Installing Synapse](#installing-synapse)
-  * [Installing from source](#installing-from-source)
-    * [Platform-Specific Instructions](#platform-specific-instructions)
-    * [Troubleshooting Installation](#troubleshooting-installation)
-  * [Prebuilt packages](#prebuilt-packages)
-* [Setting up Synapse](#setting-up-synapse)
-  * [TLS certificates](#tls-certificates)
-  * [Registering a user](#registering-a-user)
-  * [Setting up a TURN server](#setting-up-a-turn-server)
-  * [URL previews](#url-previews)
+- [Installing Synapse](#installing-synapse)
+  - [Installing from source](#installing-from-source)
+    - [Platform-Specific Instructions](#platform-specific-instructions)
+    - [Troubleshooting Installation](#troubleshooting-installation)
+  - [Prebuilt packages](#prebuilt-packages)
+- [Setting up Synapse](#setting-up-synapse)
+  - [TLS certificates](#tls-certificates)
+  - [Email](#email)
+  - [Registering a user](#registering-a-user)
+  - [Setting up a TURN server](#setting-up-a-turn-server)
+  - [URL previews](#url-previews)
 
 # Installing Synapse
 
@@ -35,7 +36,7 @@ virtualenv -p python3 ~/synapse/env
 source ~/synapse/env/bin/activate
 pip install --upgrade pip
 pip install --upgrade setuptools
-pip install matrix-synapse[all]
+pip install matrix-synapse
 ```
 
 This will download Synapse from [PyPI](https://pypi.org/project/matrix-synapse)
@@ -48,7 +49,7 @@ update flag:
 
 ```
 source ~/synapse/env/bin/activate
-pip install -U matrix-synapse[all]
+pip install -U matrix-synapse
 ```
 
 Before you can start Synapse, you will need to generate a configuration
@@ -257,18 +258,29 @@ https://github.com/spantaleev/matrix-docker-ansible-deploy
 #### Matrix.org packages
 
 Matrix.org provides Debian/Ubuntu packages of the latest stable version of
-Synapse via https://matrix.org/packages/debian/. To use them:
+Synapse via https://packages.matrix.org/debian/. They are available for Debian
+9 (Stretch), Ubuntu 16.04 (Xenial), and later. To use them:
 
 ```
-sudo apt install -y lsb-release curl apt-transport-https
-echo "deb https://matrix.org/packages/debian `lsb_release -cs` main" |
+sudo apt install -y lsb-release wget apt-transport-https
+sudo wget -O /usr/share/keyrings/matrix-org-archive-keyring.gpg https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg
+echo "deb [signed-by=/usr/share/keyrings/matrix-org-archive-keyring.gpg] https://packages.matrix.org/debian/ $(lsb_release -cs) main" |
     sudo tee /etc/apt/sources.list.d/matrix-org.list
-curl "https://matrix.org/packages/debian/repo-key.asc" |
-    sudo apt-key add -
 sudo apt update
 sudo apt install matrix-synapse-py3
 ```
 
+**Note**: if you followed a previous version of these instructions which
+recommended using `apt-key add` to add an old key from
+`https://matrix.org/packages/debian/`, you should note that this key has been
+revoked. You should remove the old key with `sudo apt-key remove
+C35EB17E1EAE708E6603A9B3AD0592FE47F0DF61`, and follow the above instructions to
+update your configuration.
+
+The fingerprint of the repository signing key (as shown by `gpg
+/usr/share/keyrings/matrix-org-archive-keyring.gpg`) is
+`AAF9AE843A7584B5A3E4CD2BCF45A512DE2DA058`.
+
 #### Downstream Debian/Ubuntu packages
 
 For `buster` and `sid`, Synapse is available in the Debian repositories and
@@ -383,8 +395,22 @@ To configure Synapse to expose an HTTPS port, you will need to edit
   instance, if using certbot, use `fullchain.pem` as your certificate, not
   `cert.pem`).
 
-For those of you upgrading your TLS certificate in readiness for Synapse 1.0,
-please take a look at [our guide](docs/MSC1711_certificates_FAQ.md#configuring-certificates-for-compatibility-with-synapse-100).
+For a more detailed guide to configuring your server for federation, see
+[federate.md](docs/federate.md)
+
+
+## Email
+
+It is desirable for Synapse to have the capability to send email. For example,
+this is required to support the 'password reset' feature.
+
+To configure an SMTP server for Synapse, modify the configuration section
+headed ``email``, and be sure to have at least the ``smtp_host``, ``smtp_port``
+and ``notif_from`` fields filled out. You may also need to set ``smtp_user``,
+``smtp_pass``, and ``require_transport_security``.
+
+If Synapse is not configured with an SMTP server, password reset via email will
+ be disabled by default.
 
 ## Registering a user
 
diff --git a/MANIFEST.in b/MANIFEST.in
index 0500dd6b87..2c59c7bdc2 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -9,14 +9,19 @@ include demo/*.py
 include demo/*.sh
 
 recursive-include synapse/storage/schema *.sql
+recursive-include synapse/storage/schema *.sql.postgres
+recursive-include synapse/storage/schema *.sql.sqlite
 recursive-include synapse/storage/schema *.py
+recursive-include synapse/storage/schema *.txt
 
 recursive-include docs *
 recursive-include scripts *
 recursive-include scripts-dev *
 recursive-include synapse *.pyi
-recursive-include tests *.pem
 recursive-include tests *.py
+include tests/http/ca.crt
+include tests/http/ca.key
+include tests/http/server.key
 
 recursive-include synapse/res *
 recursive-include synapse/static *.css
diff --git a/README.rst b/README.rst
index 24afb93d7d..5409f0c563 100644
--- a/README.rst
+++ b/README.rst
@@ -173,7 +173,7 @@ Synapse offers two database engines:
  * `PostgreSQL <https://www.postgresql.org>`_
 
 By default Synapse uses SQLite in and doing so trades performance for convenience.
-SQLite is only recommended in Synapse for testing purposes or for servers with 
+SQLite is only recommended in Synapse for testing purposes or for servers with
 light workloads.
 
 Almost all installations should opt to use PostreSQL. Advantages include:
@@ -272,7 +272,7 @@ to install using pip and a virtualenv::
 
     virtualenv -p python3 env
     source env/bin/activate
-    python -m pip install -e .[all]
+    python -m pip install --no-pep-517 -e .[all]
 
 This will run a process of downloading and installing all the needed
 dependencies into a virtual env.
diff --git a/UPGRADE.rst b/UPGRADE.rst
index 228222d534..1fb109a218 100644
--- a/UPGRADE.rst
+++ b/UPGRADE.rst
@@ -49,6 +49,82 @@ returned by the Client-Server API:
     # configured on port 443.
     curl -kv https://<host.name>/_matrix/client/versions 2>&1 | grep "Server:"
 
+Upgrading to v1.1
+=================
+
+Synapse 1.1 removes support for older Python and PostgreSQL versions, as
+outlined in `our deprecation notice <https://matrix.org/blog/2019/04/08/synapse-deprecating-postgres-9-4-and-python-2-x>`_.
+
+Minimum Python Version
+----------------------
+
+Synapse v1.1 has a minimum Python requirement of Python 3.5. Python 3.6 or
+Python 3.7 are recommended as they have improved internal string handling,
+significantly reducing memory usage.
+
+If you use current versions of the Matrix.org-distributed Debian packages or
+Docker images, action is not required.
+
+If you install Synapse in a Python virtual environment, please see "Upgrading to
+v0.34.0" for notes on setting up a new virtualenv under Python 3.
+
+Minimum PostgreSQL Version
+--------------------------
+
+If using PostgreSQL under Synapse, you will need to use PostgreSQL 9.5 or above.
+Please see the
+`PostgreSQL documentation <https://www.postgresql.org/docs/11/upgrading.html>`_
+for more details on upgrading your database.
+
+Upgrading to v1.0
+=================
+
+Validation of TLS certificates
+------------------------------
+
+Synapse v1.0 is the first release to enforce
+validation of TLS certificates for the federation API. It is therefore
+essential that your certificates are correctly configured. See the `FAQ
+<docs/MSC1711_certificates_FAQ.md>`_ for more information.
+
+Note, v1.0 installations will also no longer be able to federate with servers
+that have not correctly configured their certificates.
+
+In rare cases, it may be desirable to disable certificate checking: for
+example, it might be essential to be able to federate with a given legacy
+server in a closed federation. This can be done in one of two ways:-
+
+* Configure the global switch ``federation_verify_certificates`` to ``false``.
+* Configure a whitelist of server domains to trust via ``federation_certificate_verification_whitelist``.
+
+See the `sample configuration file <docs/sample_config.yaml>`_
+for more details on these settings.
+
+Email
+-----
+When a user requests a password reset, Synapse will send an email to the
+user to confirm the request.
+
+Previous versions of Synapse delegated the job of sending this email to an
+identity server. If the identity server was somehow malicious or became
+compromised, it would be theoretically possible to hijack an account through
+this means.
+
+Therefore, by default, Synapse v1.0 will send the confirmation email itself. If
+Synapse is not configured with an SMTP server, password reset via email will be
+disabled.
+
+To configure an SMTP server for Synapse, modify the configuration section
+headed ``email``, and be sure to have at least the ``smtp_host``, ``smtp_port``
+and ``notif_from`` fields filled out. You may also need to set ``smtp_user``,
+``smtp_pass``, and ``require_transport_security``.
+
+If you are absolutely certain that you wish to continue using an identity
+server for password resets, set ``trust_identity_server_for_password_resets`` to ``true``.
+
+See the `sample configuration file <docs/sample_config.yaml>`_
+for more details on these settings.
+
 Upgrading to v0.99.0
 ====================
 
diff --git a/changelog.d/4474.misc b/changelog.d/4474.misc
deleted file mode 100644
index 4b882d60be..0000000000
--- a/changelog.d/4474.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add test to verify threepid auth check added in #4435.
diff --git a/changelog.d/4555.bugfix b/changelog.d/4555.bugfix
deleted file mode 100644
index d596022c3f..0000000000
--- a/changelog.d/4555.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Avoid redundant URL encoding of redirect URL for SSO login in the fallback login page. Fixes a regression introduced in [#4220](https://github.com/matrix-org/synapse/pull/4220). Contributed by Marcel Fabian Krüger ("[zaugin](https://github.com/zauguin)").
diff --git a/changelog.d/4942.bugfix b/changelog.d/4942.bugfix
deleted file mode 100644
index 590d80d58f..0000000000
--- a/changelog.d/4942.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix bug where presence updates were sent to all servers in a room when a new server joined, rather than to just the new server.
diff --git a/changelog.d/4947.feature b/changelog.d/4947.feature
deleted file mode 100644
index b9d27b90f1..0000000000
--- a/changelog.d/4947.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add ability for password provider modules to bind email addresses to users upon registration.
\ No newline at end of file
diff --git a/changelog.d/4949.misc b/changelog.d/4949.misc
deleted file mode 100644
index 25c4e05a64..0000000000
--- a/changelog.d/4949.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix/improve some docstrings in the replication code.
diff --git a/changelog.d/4953.misc b/changelog.d/4953.misc
deleted file mode 100644
index 06a084e6ef..0000000000
--- a/changelog.d/4953.misc
+++ /dev/null
@@ -1,2 +0,0 @@
-Split synapse.replication.tcp.streams into smaller files.
-
diff --git a/changelog.d/4954.misc b/changelog.d/4954.misc
deleted file mode 100644
index 91f145950d..0000000000
--- a/changelog.d/4954.misc
+++ /dev/null
@@ -1 +0,0 @@
-Refactor replication row generation/parsing.
diff --git a/changelog.d/4955.bugfix b/changelog.d/4955.bugfix
deleted file mode 100644
index e50e67383d..0000000000
--- a/changelog.d/4955.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix sync bug which made accepting invites unreliable in worker-mode synapses.
diff --git a/changelog.d/4956.bugfix b/changelog.d/4956.bugfix
deleted file mode 100644
index e50e67383d..0000000000
--- a/changelog.d/4956.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix sync bug which made accepting invites unreliable in worker-mode synapses.
diff --git a/changelog.d/4959.misc b/changelog.d/4959.misc
deleted file mode 100644
index dd4275501f..0000000000
--- a/changelog.d/4959.misc
+++ /dev/null
@@ -1 +0,0 @@
-Run `black` to clean up formatting on `synapse/storage/roommember.py` and `synapse/storage/events.py`.
\ No newline at end of file
diff --git a/changelog.d/4965.misc b/changelog.d/4965.misc
deleted file mode 100644
index 284c58b75e..0000000000
--- a/changelog.d/4965.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove log line for password via the admin API.
diff --git a/changelog.d/4968.misc b/changelog.d/4968.misc
deleted file mode 100644
index 7a7b69771c..0000000000
--- a/changelog.d/4968.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix typo in TLS filenames in docker/README.md. Also add the '-p' commandline option to the 'docker run' example. Contributed by Jurrie Overgoor.
diff --git a/changelog.d/4969.misc b/changelog.d/4969.misc
deleted file mode 100644
index e3a3214e6b..0000000000
--- a/changelog.d/4969.misc
+++ /dev/null
@@ -1,2 +0,0 @@
-Refactor room version definitions.
-
diff --git a/changelog.d/4974.misc b/changelog.d/4974.misc
deleted file mode 100644
index 672a18923a..0000000000
--- a/changelog.d/4974.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add `config.signing_key_path` that can be read by `synapse.config` utility.
diff --git a/changelog.d/4981.bugfix b/changelog.d/4981.bugfix
deleted file mode 100644
index e51b45eec0..0000000000
--- a/changelog.d/4981.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-start.sh: Fix the --no-rate-limit option for messages and make it bypass rate limit on registration and login too.
\ No newline at end of file
diff --git a/changelog.d/4982.misc b/changelog.d/4982.misc
deleted file mode 100644
index 067c177d39..0000000000
--- a/changelog.d/4982.misc
+++ /dev/null
@@ -1 +0,0 @@
-Track which identity server is used when binding a threepid and use that for unbinding, as per MSC1915.
diff --git a/changelog.d/4985.misc b/changelog.d/4985.misc
deleted file mode 100644
index 50c9ff9e0f..0000000000
--- a/changelog.d/4985.misc
+++ /dev/null
@@ -1 +0,0 @@
-Rewrite KeyringTestCase as a HomeserverTestCase.
diff --git a/changelog.d/4987.misc b/changelog.d/4987.misc
deleted file mode 100644
index 33490e146f..0000000000
--- a/changelog.d/4987.misc
+++ /dev/null
@@ -1 +0,0 @@
-README updates: Corrected the default POSTGRES_USER. Added port forwarding hint in TLS section.
diff --git a/changelog.d/4989.feature b/changelog.d/4989.feature
deleted file mode 100644
index a5138f5612..0000000000
--- a/changelog.d/4989.feature
+++ /dev/null
@@ -1 +0,0 @@
-Remove presence list support as per MSC 1819.
diff --git a/changelog.d/4990.bugfix b/changelog.d/4990.bugfix
deleted file mode 100644
index 1b69d058f6..0000000000
--- a/changelog.d/4990.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Transfer related groups on room upgrade.
\ No newline at end of file
diff --git a/changelog.d/4991.feature b/changelog.d/4991.feature
deleted file mode 100644
index 034bf3239c..0000000000
--- a/changelog.d/4991.feature
+++ /dev/null
@@ -1 +0,0 @@
-Reduce CPU usage starting pushers during start up.
diff --git a/changelog.d/4996.misc b/changelog.d/4996.misc
deleted file mode 100644
index ecac24e2be..0000000000
--- a/changelog.d/4996.misc
+++ /dev/null
@@ -1 +0,0 @@
-Run `black` on the remainder of `synapse/storage/`.
\ No newline at end of file
diff --git a/changelog.d/4998.misc b/changelog.d/4998.misc
deleted file mode 100644
index 7caf959139..0000000000
--- a/changelog.d/4998.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix grammar in get_current_users_in_room and give it a docstring.
diff --git a/changelog.d/4999.bugfix b/changelog.d/4999.bugfix
deleted file mode 100644
index acbc191960..0000000000
--- a/changelog.d/4999.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Prevent the ability to kick users from a room they aren't in.
diff --git a/changelog.d/5002.feature b/changelog.d/5002.feature
deleted file mode 100644
index d8f50e963f..0000000000
--- a/changelog.d/5002.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add a delete group admin API.
diff --git a/changelog.d/5003.bugfix b/changelog.d/5003.bugfix
deleted file mode 100644
index 9955dc871f..0000000000
--- a/changelog.d/5003.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix issue #4596 so synapse_port_db script works with --curses option on Python 3. Contributed by Anders Jensen-Waud <anders@jensenwaud.com>.
diff --git a/changelog.d/5007.misc b/changelog.d/5007.misc
deleted file mode 100644
index 05b6ce2c26..0000000000
--- a/changelog.d/5007.misc
+++ /dev/null
@@ -1 +0,0 @@
-Refactor synapse.storage._base._simple_select_list_paginate.
\ No newline at end of file
diff --git a/changelog.d/5010.feature b/changelog.d/5010.feature
deleted file mode 100644
index 65ab198b71..0000000000
--- a/changelog.d/5010.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add config option to block users from looking up 3PIDs.
diff --git a/changelog.d/5252.feature b/changelog.d/5252.feature
new file mode 100644
index 0000000000..44115b0382
--- /dev/null
+++ b/changelog.d/5252.feature
@@ -0,0 +1 @@
+Add monthly active users to phonehome stats.
diff --git a/changelog.d/5325.bugfix b/changelog.d/5325.bugfix
new file mode 100644
index 0000000000..b9413388f5
--- /dev/null
+++ b/changelog.d/5325.bugfix
@@ -0,0 +1 @@
+Fix a bug where running synapse_port_db would cause the account validity feature to fail because it didn't set the type of the email_sent column to boolean.
diff --git a/changelog.d/5363.feature b/changelog.d/5363.feature
new file mode 100644
index 0000000000..803fe3fc37
--- /dev/null
+++ b/changelog.d/5363.feature
@@ -0,0 +1 @@
+Allow expired user to trigger renewal email sending manually.
diff --git a/changelog.d/5378.misc b/changelog.d/5378.misc
new file mode 100644
index 0000000000..365e49d634
--- /dev/null
+++ b/changelog.d/5378.misc
@@ -0,0 +1 @@
+Track deactivated accounts in the database.
diff --git a/changelog.d/5381.misc b/changelog.d/5381.misc
new file mode 100644
index 0000000000..bbf70a0445
--- /dev/null
+++ b/changelog.d/5381.misc
@@ -0,0 +1 @@
+Clean up code for sending federation EDUs.
diff --git a/changelog.d/5382.misc b/changelog.d/5382.misc
new file mode 100644
index 0000000000..060cbba2a9
--- /dev/null
+++ b/changelog.d/5382.misc
@@ -0,0 +1 @@
+Add a sponsor button to the repo.
diff --git a/changelog.d/5383.misc b/changelog.d/5383.misc
new file mode 100644
index 0000000000..9dd5d1df93
--- /dev/null
+++ b/changelog.d/5383.misc
@@ -0,0 +1 @@
+Don't log non-200 responses from federation queries as exceptions.
diff --git a/changelog.d/5384.feature b/changelog.d/5384.feature
new file mode 100644
index 0000000000..9497f521c8
--- /dev/null
+++ b/changelog.d/5384.feature
@@ -0,0 +1 @@
+Statistics on forward extremities per room are now exposed via Prometheus.
diff --git a/changelog.d/5386.misc b/changelog.d/5386.misc
new file mode 100644
index 0000000000..060cbba2a9
--- /dev/null
+++ b/changelog.d/5386.misc
@@ -0,0 +1 @@
+Add a sponsor button to the repo.
diff --git a/changelog.d/5387.bugfix b/changelog.d/5387.bugfix
new file mode 100644
index 0000000000..2c6c94efc4
--- /dev/null
+++ b/changelog.d/5387.bugfix
@@ -0,0 +1 @@
+Warn about disabling email-based password resets when a reset occurs, and remove warning when someone attempts a phone-based reset.
diff --git a/changelog.d/5388.bugfix b/changelog.d/5388.bugfix
new file mode 100644
index 0000000000..503e830915
--- /dev/null
+++ b/changelog.d/5388.bugfix
@@ -0,0 +1 @@
+Fix email notifications for unnamed rooms with multiple people.
diff --git a/changelog.d/5389.bugfix b/changelog.d/5389.bugfix
new file mode 100644
index 0000000000..dd648e26c8
--- /dev/null
+++ b/changelog.d/5389.bugfix
@@ -0,0 +1 @@
+Fix exceptions in federation reader worker caused by attempting to renew attestations, which should only happen on master worker.
diff --git a/changelog.d/5390.bugfix b/changelog.d/5390.bugfix
new file mode 100644
index 0000000000..e7b7483cf2
--- /dev/null
+++ b/changelog.d/5390.bugfix
@@ -0,0 +1 @@
+Fix handling of failures fetching remote content to not log failures as exceptions.
diff --git a/changelog.d/5394.bugfix b/changelog.d/5394.bugfix
new file mode 100644
index 0000000000..2ad9fbe82c
--- /dev/null
+++ b/changelog.d/5394.bugfix
@@ -0,0 +1 @@
+Fix a bug where deactivated users could receive renewal emails if the account validity feature is on.
diff --git a/changelog.d/5412.feature b/changelog.d/5412.feature
new file mode 100644
index 0000000000..ec1503860a
--- /dev/null
+++ b/changelog.d/5412.feature
@@ -0,0 +1 @@
+Add --no-daemonize option to run synapse in the foreground, per issue #4130. Contributed by Soham Gumaste.
\ No newline at end of file
diff --git a/changelog.d/5425.removal b/changelog.d/5425.removal
new file mode 100644
index 0000000000..30022ee63d
--- /dev/null
+++ b/changelog.d/5425.removal
@@ -0,0 +1 @@
+Python 2.7 is no longer a supported platform. Synapse now requires Python 3.5+ to run.
diff --git a/changelog.d/5440.feature b/changelog.d/5440.feature
new file mode 100644
index 0000000000..63d9b58734
--- /dev/null
+++ b/changelog.d/5440.feature
@@ -0,0 +1 @@
+Allow server admins to define implementations of extra rules for allowing or denying incoming events.
diff --git a/changelog.d/5446.misc b/changelog.d/5446.misc
new file mode 100644
index 0000000000..e5209be0a6
--- /dev/null
+++ b/changelog.d/5446.misc
@@ -0,0 +1 @@
+Update Python syntax in contrib/ to Python 3. 
diff --git a/changelog.d/5447.misc b/changelog.d/5447.misc
new file mode 100644
index 0000000000..dd52068404
--- /dev/null
+++ b/changelog.d/5447.misc
@@ -0,0 +1 @@
+Update federation_client dev script to support `.well-known` and work with python3.
diff --git a/changelog.d/5448.removal b/changelog.d/5448.removal
new file mode 100644
index 0000000000..33b9859dae
--- /dev/null
+++ b/changelog.d/5448.removal
@@ -0,0 +1 @@
+PostgreSQL 9.4 is no longer supported. Synapse requires Postgres 9.5+ or above for Postgres support.
diff --git a/changelog.d/5458.feature b/changelog.d/5458.feature
new file mode 100644
index 0000000000..9497f521c8
--- /dev/null
+++ b/changelog.d/5458.feature
@@ -0,0 +1 @@
+Statistics on forward extremities per room are now exposed via Prometheus.
diff --git a/changelog.d/5459.misc b/changelog.d/5459.misc
new file mode 100644
index 0000000000..904e45f66b
--- /dev/null
+++ b/changelog.d/5459.misc
@@ -0,0 +1 @@
+SyTest has been moved to Buildkite.
diff --git a/changelog.d/5460.misc b/changelog.d/5460.misc
new file mode 100644
index 0000000000..badc8bb79a
--- /dev/null
+++ b/changelog.d/5460.misc
@@ -0,0 +1 @@
+Demo script now uses python3.
diff --git a/changelog.d/5461.feature b/changelog.d/5461.feature
new file mode 100644
index 0000000000..9497f521c8
--- /dev/null
+++ b/changelog.d/5461.feature
@@ -0,0 +1 @@
+Statistics on forward extremities per room are now exposed via Prometheus.
diff --git a/changelog.d/5464.bugfix b/changelog.d/5464.bugfix
new file mode 100644
index 0000000000..8278d1bce9
--- /dev/null
+++ b/changelog.d/5464.bugfix
@@ -0,0 +1 @@
+Fix missing invite state after exchanging 3PID invites over federaton.
diff --git a/changelog.d/5465.misc b/changelog.d/5465.misc
new file mode 100644
index 0000000000..af5f0f8f45
--- /dev/null
+++ b/changelog.d/5465.misc
@@ -0,0 +1,2 @@
+Track deactivated accounts in the database.
+
diff --git a/changelog.d/5474.feature b/changelog.d/5474.feature
new file mode 100644
index 0000000000..63d9b58734
--- /dev/null
+++ b/changelog.d/5474.feature
@@ -0,0 +1 @@
+Allow server admins to define implementations of extra rules for allowing or denying incoming events.
diff --git a/changelog.d/5477.feature b/changelog.d/5477.feature
new file mode 100644
index 0000000000..63d9b58734
--- /dev/null
+++ b/changelog.d/5477.feature
@@ -0,0 +1 @@
+Allow server admins to define implementations of extra rules for allowing or denying incoming events.
diff --git a/changelog.d/5478.misc b/changelog.d/5478.misc
new file mode 100644
index 0000000000..829bb1e521
--- /dev/null
+++ b/changelog.d/5478.misc
@@ -0,0 +1 @@
+The demo servers talk to each other again.
diff --git a/contrib/cmdclient/console.py b/contrib/cmdclient/console.py
index 4918fa1a9a..462f146113 100755
--- a/contrib/cmdclient/console.py
+++ b/contrib/cmdclient/console.py
@@ -15,6 +15,7 @@
 # limitations under the License.
 
 """ Starts a synapse client console. """
+from __future__ import print_function
 
 from twisted.internet import reactor, defer, threads
 from http import TwistedHttpClient
@@ -109,7 +110,7 @@ class SynapseCmd(cmd.Cmd):
         by using $. E.g. 'config roomid room1' then 'raw get /rooms/$roomid'.
         """
         if len(line) == 0:
-            print json.dumps(self.config, indent=4)
+            print(json.dumps(self.config, indent=4))
             return
 
         try:
@@ -123,8 +124,8 @@ class SynapseCmd(cmd.Cmd):
             ]
             for key, valid_vals in config_rules:
                 if key == args["key"] and args["val"] not in valid_vals:
-                    print "%s value must be one of %s" % (args["key"],
-                                                          valid_vals)
+                    print("%s value must be one of %s" % (args["key"],
+                                                          valid_vals))
                     return
 
             # toggle the http client verbosity
@@ -133,11 +134,11 @@ class SynapseCmd(cmd.Cmd):
 
             # assign the new config
             self.config[args["key"]] = args["val"]
-            print json.dumps(self.config, indent=4)
+            print(json.dumps(self.config, indent=4))
 
             save_config(self.config)
         except Exception as e:
-            print e
+            print(e)
 
     def do_register(self, line):
         """Registers for a new account: "register <userid> <noupdate>"
@@ -153,7 +154,7 @@ class SynapseCmd(cmd.Cmd):
             pwd = getpass.getpass("Type a password for this user: ")
             pwd2 = getpass.getpass("Retype the password: ")
             if pwd != pwd2 or len(pwd) == 0:
-                print "Password mismatch."
+                print("Password mismatch.")
                 pwd = None
             else:
                 password = pwd
@@ -174,12 +175,12 @@ class SynapseCmd(cmd.Cmd):
         # check the registration flows
         url = self._url() + "/register"
         json_res = yield self.http_client.do_request("GET", url)
-        print json.dumps(json_res, indent=4)
+        print(json.dumps(json_res, indent=4))
 
         passwordFlow = None
         for flow in json_res["flows"]:
             if flow["type"] == "m.login.recaptcha" or ("stages" in flow and "m.login.recaptcha" in flow["stages"]):
-                print "Unable to register: Home server requires captcha."
+                print("Unable to register: Home server requires captcha.")
                 return
             if flow["type"] == "m.login.password" and "stages" not in flow:
                 passwordFlow = flow
@@ -189,7 +190,7 @@ class SynapseCmd(cmd.Cmd):
             return
 
         json_res = yield self.http_client.do_request("POST", url, data=data)
-        print json.dumps(json_res, indent=4)
+        print(json.dumps(json_res, indent=4))
         if update_config and "user_id" in json_res:
             self.config["user"] = json_res["user_id"]
             self.config["token"] = json_res["access_token"]
@@ -215,7 +216,7 @@ class SynapseCmd(cmd.Cmd):
                 reactor.callFromThread(self._do_login, user, p)
                 #print " got %s " % p
         except Exception as e:
-            print e
+            print(e)
 
     @defer.inlineCallbacks
     def _do_login(self, user, password):
@@ -227,13 +228,13 @@ class SynapseCmd(cmd.Cmd):
         }
         url = self._url() + path
         json_res = yield self.http_client.do_request("POST", url, data=data)
-        print json_res
+        print(json_res)
 
         if "access_token" in json_res:
             self.config["user"] = user
             self.config["token"] = json_res["access_token"]
             save_config(self.config)
-            print "Login successful."
+            print("Login successful.")
 
     @defer.inlineCallbacks
     def _check_can_login(self):
@@ -242,10 +243,10 @@ class SynapseCmd(cmd.Cmd):
         # submitting!
         url = self._url() + path
         json_res = yield self.http_client.do_request("GET", url)
-        print json_res
+        print(json_res)
 
         if "flows" not in json_res:
-            print "Failed to find any login flows."
+            print("Failed to find any login flows.")
             defer.returnValue(False)
 
         flow = json_res["flows"][0] # assume first is the one we want.
@@ -275,9 +276,9 @@ class SynapseCmd(cmd.Cmd):
 
         json_res = yield self.http_client.do_request("POST", url, data=urllib.urlencode(args), jsonreq=False,
                                                      headers={'Content-Type': ['application/x-www-form-urlencoded']})
-        print json_res
+        print(json_res)
         if 'sid' in json_res:
-            print "Token sent. Your session ID is %s" % (json_res['sid'])
+            print("Token sent. Your session ID is %s" % (json_res['sid']))
 
     def do_emailvalidate(self, line):
         """Validate and associate a third party ID
@@ -297,7 +298,7 @@ class SynapseCmd(cmd.Cmd):
 
         json_res = yield self.http_client.do_request("POST", url, data=urllib.urlencode(args), jsonreq=False,
                                                      headers={'Content-Type': ['application/x-www-form-urlencoded']})
-        print json_res
+        print(json_res)
 
     def do_3pidbind(self, line):
         """Validate and associate a third party ID
@@ -317,7 +318,7 @@ class SynapseCmd(cmd.Cmd):
 
         json_res = yield self.http_client.do_request("POST", url, data=urllib.urlencode(args), jsonreq=False,
                                                      headers={'Content-Type': ['application/x-www-form-urlencoded']})
-        print json_res
+        print(json_res)
 
     def do_join(self, line):
         """Joins a room: "join <roomid>" """
@@ -325,7 +326,7 @@ class SynapseCmd(cmd.Cmd):
             args = self._parse(line, ["roomid"], force_keys=True)
             self._do_membership_change(args["roomid"], "join", self._usr())
         except Exception as e:
-            print e
+            print(e)
 
     def do_joinalias(self, line):
         try:
@@ -333,7 +334,7 @@ class SynapseCmd(cmd.Cmd):
             path = "/join/%s" % urllib.quote(args["roomname"])
             reactor.callFromThread(self._run_and_pprint, "POST", path, {})
         except Exception as e:
-            print e
+            print(e)
 
     def do_topic(self, line):
         """"topic [set|get] <roomid> [<newtopic>]"
@@ -343,17 +344,17 @@ class SynapseCmd(cmd.Cmd):
         try:
             args = self._parse(line, ["action", "roomid", "topic"])
             if "action" not in args or "roomid" not in args:
-                print "Must specify set|get and a room ID."
+                print("Must specify set|get and a room ID.")
                 return
             if args["action"].lower() not in ["set", "get"]:
-                print "Must specify set|get, not %s" % args["action"]
+                print("Must specify set|get, not %s" % args["action"])
                 return
 
             path = "/rooms/%s/topic" % urllib.quote(args["roomid"])
 
             if args["action"].lower() == "set":
                 if "topic" not in args:
-                    print "Must specify a new topic."
+                    print("Must specify a new topic.")
                     return
                 body = {
                     "topic": args["topic"]
@@ -362,7 +363,7 @@ class SynapseCmd(cmd.Cmd):
             elif args["action"].lower() == "get":
                 reactor.callFromThread(self._run_and_pprint, "GET", path)
         except Exception as e:
-            print e
+            print(e)
 
     def do_invite(self, line):
         """Invite a user to a room: "invite <userid> <roomid>" """
@@ -373,7 +374,7 @@ class SynapseCmd(cmd.Cmd):
 
             reactor.callFromThread(self._do_invite, args["roomid"], user_id)
         except Exception as e:
-            print e
+            print(e)
 
     @defer.inlineCallbacks
     def _do_invite(self, roomid, userstring):
@@ -393,29 +394,29 @@ class SynapseCmd(cmd.Cmd):
                 if 'public_key' in pubKeyObj:
                     pubKey = nacl.signing.VerifyKey(pubKeyObj['public_key'], encoder=nacl.encoding.HexEncoder)
                 else:
-                    print "No public key found in pubkey response!"
+                    print("No public key found in pubkey response!")
 
                 sigValid = False
 
                 if pubKey:
                     for signame in json_res['signatures']:
                         if signame not in TRUSTED_ID_SERVERS:
-                            print "Ignoring signature from untrusted server %s" % (signame)
+                            print("Ignoring signature from untrusted server %s" % (signame))
                         else:
                             try:
                                 verify_signed_json(json_res, signame, pubKey)
                                 sigValid = True
-                                print "Mapping %s -> %s correctly signed by %s" % (userstring, json_res['mxid'], signame)
+                                print("Mapping %s -> %s correctly signed by %s" % (userstring, json_res['mxid'], signame))
                                 break
                             except SignatureVerifyException as e:
-                                print "Invalid signature from %s" % (signame)
-                                print e
+                                print("Invalid signature from %s" % (signame))
+                                print(e)
 
                 if sigValid:
-                    print "Resolved 3pid %s to %s" % (userstring, json_res['mxid'])
+                    print("Resolved 3pid %s to %s" % (userstring, json_res['mxid']))
                     mxid = json_res['mxid']
                 else:
-                    print "Got association for %s but couldn't verify signature" % (userstring)
+                    print("Got association for %s but couldn't verify signature" % (userstring))
 
             if not mxid:
                 mxid = "@" + userstring + ":" + self._domain()
@@ -428,7 +429,7 @@ class SynapseCmd(cmd.Cmd):
             args = self._parse(line, ["roomid"], force_keys=True)
             self._do_membership_change(args["roomid"], "leave", self._usr())
         except Exception as e:
-            print e
+            print(e)
 
     def do_send(self, line):
         """Sends a message. "send <roomid> <body>" """
@@ -453,10 +454,10 @@ class SynapseCmd(cmd.Cmd):
         """
         args = self._parse(line, ["type", "roomid", "qp"])
         if not "type" in args or not "roomid" in args:
-            print "Must specify type and room ID."
+            print("Must specify type and room ID.")
             return
         if args["type"] not in ["members", "messages"]:
-            print "Unrecognised type: %s" % args["type"]
+            print("Unrecognised type: %s" % args["type"])
             return
         room_id = args["roomid"]
         path = "/rooms/%s/%s" % (urllib.quote(room_id), args["type"])
@@ -468,7 +469,7 @@ class SynapseCmd(cmd.Cmd):
                     key_value = key_value_str.split("=")
                     qp[key_value[0]] = key_value[1]
                 except:
-                    print "Bad query param: %s" % key_value
+                    print("Bad query param: %s" % key_value)
                     return
 
         reactor.callFromThread(self._run_and_pprint, "GET", path,
@@ -508,14 +509,14 @@ class SynapseCmd(cmd.Cmd):
         args = self._parse(line, ["method", "path", "data"])
         # sanity check
         if "method" not in args or "path" not in args:
-            print "Must specify path and method."
+            print("Must specify path and method.")
             return
 
         args["method"] = args["method"].upper()
         valid_methods = ["PUT", "GET", "POST", "DELETE",
                          "XPUT", "XGET", "XPOST", "XDELETE"]
         if args["method"] not in valid_methods:
-            print "Unsupported method: %s" % args["method"]
+            print("Unsupported method: %s" % args["method"])
             return
 
         if "data" not in args:
@@ -524,7 +525,7 @@ class SynapseCmd(cmd.Cmd):
             try:
                 args["data"] = json.loads(args["data"])
             except Exception as e:
-                print "Data is not valid JSON. %s" % e
+                print("Data is not valid JSON. %s" % e)
                 return
 
         qp = {"access_token": self._tok()}
@@ -553,7 +554,7 @@ class SynapseCmd(cmd.Cmd):
             try:
                 timeout = int(args["timeout"])
             except ValueError:
-                print "Timeout must be in milliseconds."
+                print("Timeout must be in milliseconds.")
                 return
         reactor.callFromThread(self._do_event_stream, timeout)
 
@@ -566,7 +567,7 @@ class SynapseCmd(cmd.Cmd):
                     "timeout": str(timeout),
                     "from": self.event_stream_token
                 })
-        print json.dumps(res, indent=4)
+        print(json.dumps(res, indent=4))
 
         if "chunk" in res:
             for event in res["chunk"]:
@@ -669,9 +670,9 @@ class SynapseCmd(cmd.Cmd):
                                                     data=data,
                                                     qparams=query_params)
         if alt_text:
-            print alt_text
+            print(alt_text)
         else:
-            print json.dumps(json_res, indent=4)
+            print(json.dumps(json_res, indent=4))
 
 
 def save_config(config):
@@ -680,16 +681,16 @@ def save_config(config):
 
 
 def main(server_url, identity_server_url, username, token, config_path):
-    print "Synapse command line client"
-    print "==========================="
-    print "Server: %s" % server_url
-    print "Type 'help' to get started."
-    print "Close this console with CTRL+C then CTRL+D."
+    print("Synapse command line client")
+    print("===========================")
+    print("Server: %s" % server_url)
+    print("Type 'help' to get started.")
+    print("Close this console with CTRL+C then CTRL+D.")
     if not username or not token:
-        print "-  'register <username>' - Register an account"
-        print "-  'stream' - Connect to the event stream"
-        print "-  'create <roomid>' - Create a room"
-        print "-  'send <roomid> <message>' - Send a message"
+        print("-  'register <username>' - Register an account")
+        print("-  'stream' - Connect to the event stream")
+        print("-  'create <roomid>' - Create a room")
+        print("-  'send <roomid> <message>' - Send a message")
     http_client = TwistedHttpClient()
 
     # the command line client
@@ -705,7 +706,7 @@ def main(server_url, identity_server_url, username, token, config_path):
                 http_client.verbose = "on" == syn_cmd.config["verbose"]
             except:
                 pass
-            print "Loaded config from %s" % config_path
+            print("Loaded config from %s" % config_path)
     except:
         pass
 
@@ -736,7 +737,7 @@ if __name__ == '__main__':
     args = parser.parse_args()
 
     if not args.server:
-        print "You must supply a server URL to communicate with."
+        print("You must supply a server URL to communicate with.")
         parser.print_help()
         sys.exit(1)
 
diff --git a/contrib/cmdclient/http.py b/contrib/cmdclient/http.py
index c833f3f318..1bd600e148 100644
--- a/contrib/cmdclient/http.py
+++ b/contrib/cmdclient/http.py
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import print_function
 from twisted.web.client import Agent, readBody
 from twisted.web.http_headers import Headers
 from twisted.internet import defer, reactor
@@ -141,15 +142,15 @@ class TwistedHttpClient(HttpClient):
         headers_dict["User-Agent"] = ["Synapse Cmd Client"]
 
         retries_left = 5
-        print "%s to %s with headers %s" % (method, url, headers_dict)
+        print("%s to %s with headers %s" % (method, url, headers_dict))
         if self.verbose and producer:
             if "password" in producer.data:
                 temp = producer.data["password"]
                 producer.data["password"] = "[REDACTED]"
-                print json.dumps(producer.data, indent=4)
+                print(json.dumps(producer.data, indent=4))
                 producer.data["password"] = temp
             else:
-                print json.dumps(producer.data, indent=4)
+                print(json.dumps(producer.data, indent=4))
 
         while True:
             try:
@@ -161,7 +162,7 @@ class TwistedHttpClient(HttpClient):
                 )
                 break
             except Exception as e:
-                print "uh oh: %s" % e
+                print("uh oh: %s" % e)
                 if retries_left:
                     yield self.sleep(2 ** (5 - retries_left))
                     retries_left -= 1
@@ -169,8 +170,8 @@ class TwistedHttpClient(HttpClient):
                     raise e
 
         if self.verbose:
-            print "Status %s %s" % (response.code, response.phrase)
-            print pformat(list(response.headers.getAllRawHeaders()))
+            print("Status %s %s" % (response.code, response.phrase))
+            print(pformat(list(response.headers.getAllRawHeaders())))
         defer.returnValue(response)
 
     def sleep(self, seconds):
diff --git a/contrib/grafana/synapse.json b/contrib/grafana/synapse.json
index dc3f4a1d1c..4abeb7d392 100644
--- a/contrib/grafana/synapse.json
+++ b/contrib/grafana/synapse.json
@@ -1,5211 +1 @@
-{
-  "__inputs": [
-    {
-      "name": "DS_PROMETHEUS",
-      "label": "Prometheus",
-      "description": "",
-      "type": "datasource",
-      "pluginId": "prometheus",
-      "pluginName": "Prometheus"
-    }
-  ],
-  "__requires": [
-    {
-      "type": "grafana",
-      "id": "grafana",
-      "name": "Grafana",
-      "version": "5.2.4"
-    },
-    {
-      "type": "panel",
-      "id": "graph",
-      "name": "Graph",
-      "version": "5.0.0"
-    },
-    {
-      "type": "panel",
-      "id": "heatmap",
-      "name": "Heatmap",
-      "version": "5.0.0"
-    },
-    {
-      "type": "datasource",
-      "id": "prometheus",
-      "name": "Prometheus",
-      "version": "5.0.0"
-    }
-  ],
-  "annotations": {
-    "list": [
-      {
-        "builtIn": 1,
-        "datasource": "$datasource",
-        "enable": false,
-        "hide": true,
-        "iconColor": "rgba(0, 211, 255, 1)",
-        "limit": 100,
-        "name": "Annotations & Alerts",
-        "showIn": 0,
-        "type": "dashboard"
-      }
-    ]
-  },
-  "editable": true,
-  "gnetId": null,
-  "graphTooltip": 0,
-  "id": null,
-  "iteration": 1537878047048,
-  "links": [
-    {
-      "asDropdown": true,
-      "icon": "external link",
-      "keepTime": true,
-      "tags": [
-        "matrix"
-      ],
-      "title": "Dashboards",
-      "type": "dashboards"
-    }
-  ],
-  "panels": [
-    {
-      "collapsed": false,
-      "gridPos": {
-        "h": 1,
-        "w": 24,
-        "x": 0,
-        "y": 0
-      },
-      "id": 73,
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diff --git a/contrib/graph/graph.py b/contrib/graph/graph.py
index afd1d446b4..e174ff5026 100644
--- a/contrib/graph/graph.py
+++ b/contrib/graph/graph.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -48,7 +49,7 @@ def make_graph(pdus, room, filename_prefix):
             c = colors.pop()
             color_map[o] = c
         except:
-            print "Run out of colours!"
+            print("Run out of colours!")
             color_map[o] = "black"
 
     graph = pydot.Dot(graph_name="Test")
@@ -93,7 +94,7 @@ def make_graph(pdus, room, filename_prefix):
             end_name = make_name(i, o)
 
             if end_name not in node_map:
-                print "%s not in nodes" % end_name
+                print("%s not in nodes" % end_name)
                 continue
 
             edge = pydot.Edge(node_map[start_name], node_map[end_name])
diff --git a/contrib/graph/graph3.py b/contrib/graph/graph3.py
index 7d3b4d7eb6..fe1dc81e90 100644
--- a/contrib/graph/graph3.py
+++ b/contrib/graph/graph3.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 # Copyright 2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -26,19 +27,19 @@ from six import string_types
 
 
 def make_graph(file_name, room_id, file_prefix, limit):
-    print "Reading lines"
+    print("Reading lines")
     with open(file_name) as f:
         lines = f.readlines()
 
-    print "Read lines"
+    print("Read lines")
 
     events = [FrozenEvent(json.loads(line)) for line in lines]
 
-    print "Loaded events."
+    print("Loaded events.")
 
     events.sort(key=lambda e: e.depth)
 
-    print "Sorted events"
+    print("Sorted events")
 
     if limit:
         events = events[-int(limit):]
@@ -55,7 +56,7 @@ def make_graph(file_name, room_id, file_prefix, limit):
         content = json.dumps(unfreeze(event.get_dict()["content"]), indent=4)
         content = content.replace("\n", "<br/>\n")
 
-        print content
+        print(content)
         content = []
         for key, value in unfreeze(event.get_dict()["content"]).items():
             if value is None:
@@ -74,7 +75,7 @@ def make_graph(file_name, room_id, file_prefix, limit):
 
         content = "<br/>\n".join(content)
 
-        print content
+        print(content)
 
         label = (
             "<"
@@ -102,7 +103,7 @@ def make_graph(file_name, room_id, file_prefix, limit):
         node_map[event.event_id] = node
         graph.add_node(node)
 
-    print "Created Nodes"
+    print("Created Nodes")
 
     for event in events:
         for prev_id, _ in event.prev_events:
@@ -120,15 +121,15 @@ def make_graph(file_name, room_id, file_prefix, limit):
             edge = pydot.Edge(node_map[event.event_id], end_node)
             graph.add_edge(edge)
 
-    print "Created edges"
+    print("Created edges")
 
     graph.write('%s.dot' % file_prefix, format='raw', prog='dot')
 
-    print "Created Dot"
+    print("Created Dot")
 
     graph.write_svg("%s.svg" % file_prefix, prog='dot')
 
-    print "Created svg"
+    print("Created svg")
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(
diff --git a/contrib/jitsimeetbridge/jitsimeetbridge.py b/contrib/jitsimeetbridge/jitsimeetbridge.py
index 15f8e1c48b..e82d1be5d2 100644
--- a/contrib/jitsimeetbridge/jitsimeetbridge.py
+++ b/contrib/jitsimeetbridge/jitsimeetbridge.py
@@ -8,8 +8,9 @@ we set the remote SDP at which point the stream ends. Our video never gets to
 the bridge.
 
 Requires:
-npm install jquery jsdom 
+npm install jquery jsdom
 """
+from __future__ import print_function
 
 import gevent
 import grequests
@@ -51,7 +52,7 @@ class TrivialMatrixClient:
             req = grequests.get(url)
             resps = grequests.map([req])
             obj = json.loads(resps[0].content)
-            print "incoming from matrix",obj
+            print("incoming from matrix",obj)
             if 'end' not in obj:
                 continue
             self.token = obj['end']
@@ -60,22 +61,22 @@ class TrivialMatrixClient:
 
     def joinRoom(self, roomId):
         url = MATRIXBASE+'rooms/'+roomId+'/join?access_token='+self.access_token
-        print url
+        print(url)
         headers={ 'Content-Type': 'application/json' }
         req = grequests.post(url, headers=headers, data='{}')
         resps = grequests.map([req])
         obj = json.loads(resps[0].content)
-        print "response: ",obj
+        print("response: ",obj)
 
     def sendEvent(self, roomId, evType, event):
         url = MATRIXBASE+'rooms/'+roomId+'/send/'+evType+'?access_token='+self.access_token
-        print url
-        print json.dumps(event)
+        print(url)
+        print(json.dumps(event))
         headers={ 'Content-Type': 'application/json' }
         req = grequests.post(url, headers=headers, data=json.dumps(event))
         resps = grequests.map([req])
         obj = json.loads(resps[0].content)
-        print "response: ",obj
+        print("response: ",obj)
 
 
 
@@ -85,31 +86,31 @@ xmppClients = {}
 def matrixLoop():
     while True:
         ev = matrixCli.getEvent()
-        print ev
+        print(ev)
         if ev['type'] == 'm.room.member':
-            print 'membership event'
+            print('membership event')
             if ev['membership'] == 'invite' and ev['state_key'] == MYUSERNAME:
                 roomId = ev['room_id']
-                print "joining room %s" % (roomId)
+                print("joining room %s" % (roomId))
                 matrixCli.joinRoom(roomId)
         elif ev['type'] == 'm.room.message':
             if ev['room_id'] in xmppClients:
-                print "already have a bridge for that user, ignoring"
+                print("already have a bridge for that user, ignoring")
                 continue
-            print "got message, connecting"
+            print("got message, connecting")
             xmppClients[ev['room_id']] = TrivialXmppClient(ev['room_id'], ev['user_id'])
             gevent.spawn(xmppClients[ev['room_id']].xmppLoop)
         elif ev['type'] == 'm.call.invite':
-            print "Incoming call"
+            print("Incoming call")
             #sdp = ev['content']['offer']['sdp']
             #print "sdp: %s" % (sdp)
             #xmppClients[ev['room_id']] = TrivialXmppClient(ev['room_id'], ev['user_id'])
             #gevent.spawn(xmppClients[ev['room_id']].xmppLoop)
         elif ev['type'] == 'm.call.answer':
-            print "Call answered"
+            print("Call answered")
             sdp = ev['content']['answer']['sdp']
             if ev['room_id'] not in xmppClients:
-                print "We didn't have a call for that room"
+                print("We didn't have a call for that room")
                 continue
             # should probably check call ID too
             xmppCli = xmppClients[ev['room_id']]
@@ -146,7 +147,7 @@ class TrivialXmppClient:
         return obj
 
     def sendAnswer(self, answer):
-        print "sdp from matrix client",answer
+        print("sdp from matrix client",answer)
         p = subprocess.Popen(['node', 'unjingle/unjingle.js', '--sdp'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
         jingle, out_err = p.communicate(answer)
         jingle = jingle % {
@@ -156,28 +157,28 @@ class TrivialXmppClient:
             'responder': self.jid,
             'sid': self.callsid
         }
-        print "answer jingle from sdp",jingle
+        print("answer jingle from sdp",jingle)
         res = self.sendIq(jingle)
-        print "reply from answer: ",res
+        print("reply from answer: ",res)
 
         self.ssrcs = {}
         jingleSoup = BeautifulSoup(jingle)
         for cont in jingleSoup.iq.jingle.findAll('content'):
             if cont.description:
                 self.ssrcs[cont['name']] = cont.description['ssrc']
-        print "my ssrcs:",self.ssrcs
+        print("my ssrcs:",self.ssrcs)
 
         gevent.joinall([
                 gevent.spawn(self.advertiseSsrcs)
         ])
 
     def advertiseSsrcs(self):
-                time.sleep(7)
-        print "SSRC spammer started"
+        time.sleep(7)
+        print("SSRC spammer started")
         while self.running:
             ssrcMsg = "<presence to='%(tojid)s' xmlns='jabber:client'><x xmlns='http://jabber.org/protocol/muc'/><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://jitsi.org/jitsimeet' ver='0WkSdhFnAUxrz4ImQQLdB80GFlE='/><nick xmlns='http://jabber.org/protocol/nick'>%(nick)s</nick><stats xmlns='http://jitsi.org/jitmeet/stats'><stat name='bitrate_download' value='175'/><stat name='bitrate_upload' value='176'/><stat name='packetLoss_total' value='0'/><stat name='packetLoss_download' value='0'/><stat name='packetLoss_upload' value='0'/></stats><media xmlns='http://estos.de/ns/mjs'><source type='audio' ssrc='%(assrc)s' direction='sendre'/><source type='video' ssrc='%(vssrc)s' direction='sendre'/></media></presence>" % { 'tojid': "%s@%s/%s" % (ROOMNAME, ROOMDOMAIN, self.shortJid), 'nick': self.userId, 'assrc': self.ssrcs['audio'], 'vssrc': self.ssrcs['video'] }
             res = self.sendIq(ssrcMsg)
-            print "reply from ssrc announce: ",res
+            print("reply from ssrc announce: ",res)
             time.sleep(10)
 
 
@@ -186,19 +187,19 @@ class TrivialXmppClient:
         self.matrixCallId = time.time()
         res = self.xmppPoke("<body rid='%s' xmlns='http://jabber.org/protocol/httpbind' to='%s' xml:lang='en' wait='60' hold='1' content='text/xml; charset=utf-8' ver='1.6' xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh'/>" % (self.nextRid(), HOST))
 
-        print res
+        print(res)
         self.sid = res.body['sid']
-        print "sid %s" % (self.sid)
+        print("sid %s" % (self.sid))
 
         res = self.sendIq("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/>")
 
         res = self.xmppPoke("<body rid='%s' xmlns='http://jabber.org/protocol/httpbind' sid='%s' to='%s' xml:lang='en' xmpp:restart='true' xmlns:xmpp='urn:xmpp:xbosh'/>" % (self.nextRid(), self.sid, HOST))
 
         res = self.sendIq("<iq type='set' id='_bind_auth_2' xmlns='jabber:client'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/></iq>")
-        print res
+        print(res)
 
         self.jid = res.body.iq.bind.jid.string
-        print "jid: %s" % (self.jid)
+        print("jid: %s" % (self.jid))
         self.shortJid = self.jid.split('-')[0]
 
         res = self.sendIq("<iq type='set' id='_session_auth_2' xmlns='jabber:client'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>")
@@ -217,13 +218,13 @@ class TrivialXmppClient:
             if p.c and p.c.nick:
                 u['nick'] = p.c.nick.string
             self.muc['users'].append(u)
-        print "muc: ",self.muc
+        print("muc: ",self.muc)
 
         # wait for stuff
         while True:
-            print "waiting..."
+            print("waiting...")
             res = self.sendIq("")
-            print "got from stream: ",res
+            print("got from stream: ",res)
             if res.body.iq:
                 jingles = res.body.iq.findAll('jingle')
                 if len(jingles):
@@ -232,15 +233,15 @@ class TrivialXmppClient:
             elif 'type' in res.body and res.body['type'] == 'terminate':
                 self.running = False
                 del xmppClients[self.matrixRoom]
-                        return
+                return
 
     def handleInvite(self, jingle):
         self.initiator = jingle['initiator']
         self.callsid = jingle['sid']
         p = subprocess.Popen(['node', 'unjingle/unjingle.js', '--jingle'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
-        print "raw jingle invite",str(jingle)
+        print("raw jingle invite",str(jingle))
         sdp, out_err = p.communicate(str(jingle))
-        print "transformed remote offer sdp",sdp
+        print("transformed remote offer sdp",sdp)
         inviteEvent = {
             'offer': {
                 'type': 'offer',
@@ -252,7 +253,7 @@ class TrivialXmppClient:
         }
         matrixCli.sendEvent(self.matrixRoom, 'm.call.invite', inviteEvent)
 
-matrixCli = TrivialMatrixClient(ACCESS_TOKEN)
+matrixCli = TrivialMatrixClient(ACCESS_TOKEN)  # Undefined name
 
 gevent.joinall([
     gevent.spawn(matrixLoop)
diff --git a/contrib/scripts/kick_users.py b/contrib/scripts/kick_users.py
index 5dfaec3ad0..b4a14385d0 100755
--- a/contrib/scripts/kick_users.py
+++ b/contrib/scripts/kick_users.py
@@ -1,10 +1,16 @@
 #!/usr/bin/env python
+from __future__ import print_function
 from argparse import ArgumentParser
 import json
 import requests
 import sys
 import urllib
 
+try:
+    raw_input
+except NameError:  # Python 3
+    raw_input = input
+
 def _mkurl(template, kws):
     for key in kws:
         template = template.replace(key, kws[key])
@@ -13,7 +19,7 @@ def _mkurl(template, kws):
 def main(hs, room_id, access_token, user_id_prefix, why):
     if not why:
         why = "Automated kick."
-    print "Kicking members on %s in room %s matching %s" % (hs, room_id, user_id_prefix)
+    print("Kicking members on %s in room %s matching %s" % (hs, room_id, user_id_prefix))
     room_state_url = _mkurl(
         "$HS/_matrix/client/api/v1/rooms/$ROOM/state?access_token=$TOKEN",
         {
@@ -22,13 +28,13 @@ def main(hs, room_id, access_token, user_id_prefix, why):
             "$TOKEN": access_token
         }
     )
-    print "Getting room state => %s" % room_state_url
+    print("Getting room state => %s" % room_state_url)
     res = requests.get(room_state_url)
-    print "HTTP %s" % res.status_code
+    print("HTTP %s" % res.status_code)
     state_events = res.json()
     if "error" in state_events:
-        print "FATAL"
-        print state_events
+        print("FATAL")
+        print(state_events)
         return
 
     kick_list = []
@@ -44,15 +50,15 @@ def main(hs, room_id, access_token, user_id_prefix, why):
             kick_list.append(event["state_key"])
 
     if len(kick_list) == 0:
-        print "No user IDs match the prefix '%s'" % user_id_prefix
+        print("No user IDs match the prefix '%s'" % user_id_prefix)
         return
 
-    print "The following user IDs will be kicked from %s" % room_name
+    print("The following user IDs will be kicked from %s" % room_name)
     for uid in kick_list:
-        print uid
+        print(uid)
     doit = raw_input("Continue? [Y]es\n")
     if len(doit) > 0 and doit.lower() == 'y':
-        print "Kicking members..."
+        print("Kicking members...")
         # encode them all
         kick_list = [urllib.quote(uid) for uid in kick_list]
         for uid in kick_list:
@@ -69,14 +75,14 @@ def main(hs, room_id, access_token, user_id_prefix, why):
                 "membership": "leave",
                 "reason": why
             }
-            print "Kicking %s" % uid
+            print("Kicking %s" % uid)
             res = requests.put(kick_url, data=json.dumps(kick_body))
             if res.status_code != 200:
-                print "ERROR: HTTP %s" % res.status_code
+                print("ERROR: HTTP %s" % res.status_code)
             if res.json().get("error"):
-                print "ERROR: JSON %s" % res.json()
-            
-    
+                print("ERROR: JSON %s" % res.json())
+
+
 
 if __name__ == "__main__":
     parser = ArgumentParser("Kick members in a room matching a certain user ID prefix.")
diff --git a/contrib/systemd-with-workers/system/matrix-synapse-worker@.service b/contrib/systemd-with-workers/system/matrix-synapse-worker@.service
index 912984b9d2..9d980d5168 100644
--- a/contrib/systemd-with-workers/system/matrix-synapse-worker@.service
+++ b/contrib/systemd-with-workers/system/matrix-synapse-worker@.service
@@ -12,6 +12,7 @@ ExecStart=/opt/venvs/matrix-synapse/bin/python -m synapse.app.%i --config-path=/
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always
 RestartSec=3
+SyslogIdentifier=matrix-synapse-%i
 
 [Install]
 WantedBy=matrix-synapse.service
diff --git a/contrib/systemd-with-workers/system/matrix-synapse.service b/contrib/systemd-with-workers/system/matrix-synapse.service
index 8bb4e400dc..3aae19034c 100644
--- a/contrib/systemd-with-workers/system/matrix-synapse.service
+++ b/contrib/systemd-with-workers/system/matrix-synapse.service
@@ -11,6 +11,7 @@ ExecStart=/opt/venvs/matrix-synapse/bin/python -m synapse.app.homeserver --confi
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always
 RestartSec=3
+SyslogIdentifier=matrix-synapse
 
 [Install]
 WantedBy=matrix.target
diff --git a/contrib/systemd/matrix-synapse.service b/contrib/systemd/matrix-synapse.service
index efb157e941..595b69916c 100644
--- a/contrib/systemd/matrix-synapse.service
+++ b/contrib/systemd/matrix-synapse.service
@@ -22,10 +22,10 @@ Group=nogroup
 
 WorkingDirectory=/opt/synapse
 ExecStart=/opt/synapse/env/bin/python -m synapse.app.homeserver --config-path=/opt/synapse/homeserver.yaml
+SyslogIdentifier=matrix-synapse
 
 # adjust the cache factor if necessary
 # Environment=SYNAPSE_CACHE_FACTOR=2.0
 
 [Install]
 WantedBy=multi-user.target
-
diff --git a/debian/changelog b/debian/changelog
index 03df2e1c00..ef4edd7ac0 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,43 @@
+matrix-synapse-py3 (1.0.0) stable; urgency=medium
+
+  * New synapse release 1.0.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 11 Jun 2019 17:09:53 +0100
+
+matrix-synapse-py3 (0.99.5.2) stable; urgency=medium
+
+  * New synapse release 0.99.5.2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Thu, 30 May 2019 16:28:07 +0100
+
+matrix-synapse-py3 (0.99.5.1) stable; urgency=medium
+
+  * New synapse release 0.99.5.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Wed, 22 May 2019 16:22:24 +0000
+
+matrix-synapse-py3 (0.99.4) stable; urgency=medium
+
+  [ Christoph Müller ]
+  * Configure the systemd units to have a log identifier of `matrix-synapse`
+
+  [ Synapse Packaging team ]
+  * New synapse release 0.99.4.
+
+ -- Synapse Packaging team <packages@matrix.org>  Wed, 15 May 2019 13:58:08 +0100
+
+matrix-synapse-py3 (0.99.3.2) stable; urgency=medium
+
+  * New synapse release 0.99.3.2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 03 May 2019 18:56:20 +0100
+
+matrix-synapse-py3 (0.99.3.1) stable; urgency=medium
+
+  * New synapse release 0.99.3.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 03 May 2019 16:02:43 +0100
+
 matrix-synapse-py3 (0.99.3) stable; urgency=medium
 
   [ Richard van der Hoff ]
diff --git a/debian/matrix-synapse.service b/debian/matrix-synapse.service
index 942e4b83fe..b0a8d72e6d 100644
--- a/debian/matrix-synapse.service
+++ b/debian/matrix-synapse.service
@@ -11,6 +11,7 @@ ExecStart=/opt/venvs/matrix-synapse/bin/python -m synapse.app.homeserver --confi
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always
 RestartSec=3
+SyslogIdentifier=matrix-synapse
 
 [Install]
 WantedBy=multi-user.target
diff --git a/debian/test/.gitignore b/debian/test/.gitignore
new file mode 100644
index 0000000000..95eda73fcc
--- /dev/null
+++ b/debian/test/.gitignore
@@ -0,0 +1,2 @@
+.vagrant
+*.log
diff --git a/debian/test/provision.sh b/debian/test/provision.sh
new file mode 100644
index 0000000000..a5c7f59712
--- /dev/null
+++ b/debian/test/provision.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# provisioning script for vagrant boxes for testing the matrix-synapse debs.
+#
+# Will install the most recent matrix-synapse-py3 deb for this platform from
+# the /debs directory.
+
+set -e
+
+apt-get update
+apt-get install -y lsb-release
+
+deb=`ls /debs/matrix-synapse-py3_*+$(lsb_release -cs)*.deb | sort | tail -n1`
+
+debconf-set-selections <<EOF
+matrix-synapse matrix-synapse/report-stats boolean false
+matrix-synapse matrix-synapse/server-name string localhost:18448
+EOF
+
+dpkg -i "$deb"
+
+sed -i -e '/port: 8...$/{s/8448/18448/; s/8008/18008/}' -e '$aregistration_shared_secret: secret' /etc/matrix-synapse/homeserver.yaml
+systemctl restart matrix-synapse
diff --git a/debian/test/stretch/Vagrantfile b/debian/test/stretch/Vagrantfile
new file mode 100644
index 0000000000..d8eff6fe11
--- /dev/null
+++ b/debian/test/stretch/Vagrantfile
@@ -0,0 +1,13 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+ver = `cd ../../..; dpkg-parsechangelog -S Version`.strip()
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "debian/stretch64"
+
+  config.vm.synced_folder ".", "/vagrant", disabled: true
+  config.vm.synced_folder "../../../../debs", "/debs", type: "nfs"
+
+  config.vm.provision "shell", path: "../provision.sh"
+end
diff --git a/debian/test/xenial/Vagrantfile b/debian/test/xenial/Vagrantfile
new file mode 100644
index 0000000000..189236da17
--- /dev/null
+++ b/debian/test/xenial/Vagrantfile
@@ -0,0 +1,10 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "ubuntu/xenial64"
+
+  config.vm.synced_folder ".", "/vagrant", disabled: true
+  config.vm.synced_folder "../../../../debs", "/debs"
+  config.vm.provision "shell", path: "../provision.sh"
+end
diff --git a/demo/README b/demo/README
index 0b584ceb15..0bec820ad6 100644
--- a/demo/README
+++ b/demo/README
@@ -1,9 +1,13 @@
+DO NOT USE THESE DEMO SERVERS IN PRODUCTION
+
 Requires you to have done:
     python setup.py develop
 
 
-The demo start.sh will start three synapse servers on ports 8080, 8081 and 8082, with host names localhost:$port. This can be easily changed to `hostname`:$port in start.sh if required. 
-It will also start a web server on port 8000 pointed at the webclient.
+The demo start.sh will start three synapse servers on ports 8080, 8081 and 8082, with host names localhost:$port. This can be easily changed to `hostname`:$port in start.sh if required.
+
+To enable the servers to communicate untrusted ssl certs are used. In order to do this the servers do not check the certs
+and are configured in a highly insecure way. Do not use these configuration files in production.
 
 stop.sh will stop the synapse servers and the webclient.
 
diff --git a/demo/start.sh b/demo/start.sh
index c4a1328a6f..1c4f12d0bb 100755
--- a/demo/start.sh
+++ b/demo/start.sh
@@ -21,14 +21,76 @@ for port in 8080 8081 8082; do
     pushd demo/$port
 
     #rm $DIR/etc/$port.config
-    python -m synapse.app.homeserver \
+    python3 -m synapse.app.homeserver \
         --generate-config \
         -H "localhost:$https_port" \
         --config-path "$DIR/etc/$port.config" \
         --report-stats no
 
-    printf '\n\n# Customisation made by demo/start.sh\n' >> $DIR/etc/$port.config
-    echo 'enable_registration: true' >> $DIR/etc/$port.config
+    if ! grep -F "Customisation made by demo/start.sh" -q  $DIR/etc/$port.config; then
+        printf '\n\n# Customisation made by demo/start.sh\n' >> $DIR/etc/$port.config
+        
+        echo 'enable_registration: true' >> $DIR/etc/$port.config
+
+        # Warning, this heredoc depends on the interaction of tabs and spaces. Please don't
+        # accidentaly bork me with your fancy settings.
+		listeners=$(cat <<-PORTLISTENERS
+		# Configure server to listen on both $https_port and $port
+		# This overides some of the default settings above
+		listeners:
+		  - port: $https_port
+		    type: http
+		    tls: true
+		    resources:
+		      - names: [client, federation]
+		
+		  - port: $port
+		    tls: false
+		    bind_addresses: ['::1', '127.0.0.1']
+		    type: http
+		    x_forwarded: true
+		    resources:
+		      - names: [client, federation]
+		        compress: false
+		PORTLISTENERS
+		)
+        echo "${listeners}" >> $DIR/etc/$port.config
+
+        # Disable tls for the servers
+        printf '\n\n# Disable tls on the servers.' >> $DIR/etc/$port.config
+        echo '# DO NOT USE IN PRODUCTION' >> $DIR/etc/$port.config
+        echo 'use_insecure_ssl_client_just_for_testing_do_not_use: true' >> $DIR/etc/$port.config
+        echo 'federation_verify_certificates: false' >> $DIR/etc/$port.config
+
+        # Set tls paths
+        echo "tls_certificate_path: \"$DIR/etc/localhost:$https_port.tls.crt\"" >> $DIR/etc/$port.config
+        echo "tls_private_key_path: \"$DIR/etc/localhost:$https_port.tls.key\"" >> $DIR/etc/$port.config
+
+        # Generate tls keys
+        openssl req -x509 -newkey rsa:4096 -keyout $DIR/etc/localhost\:$https_port.tls.key -out $DIR/etc/localhost\:$https_port.tls.crt -days 365 -nodes -subj "/O=matrix"
+        
+        # Ignore keys from the trusted keys server
+        echo '# Ignore keys from the trusted keys server' >> $DIR/etc/$port.config
+        echo 'trusted_key_servers:' >> $DIR/etc/$port.config
+        echo '  - server_name: "matrix.org"' >> $DIR/etc/$port.config
+        echo '    accept_keys_insecurely: true' >> $DIR/etc/$port.config
+
+        # Reduce the blacklist
+        blacklist=$(cat <<-BLACK
+		# Set the blacklist so that it doesn't include 127.0.0.1
+		federation_ip_range_blacklist:
+		  - '10.0.0.0/8'
+		  - '172.16.0.0/12'
+		  - '192.168.0.0/16'
+		  - '100.64.0.0/10'
+		  - '169.254.0.0/16'
+		  - '::1/128'
+		  - 'fe80::/64'
+		  - 'fc00::/7'
+		BLACK
+		)
+        echo "${blacklist}" >> $DIR/etc/$port.config
+    fi
 
     # Check script parameters
     if [ $# -eq 1 ]; then
@@ -55,7 +117,7 @@ for port in 8080 8081 8082; do
         echo "report_stats: false" >> $DIR/etc/$port.config
     fi
 
-    python -m synapse.app.homeserver \
+    python3 -m synapse.app.homeserver \
         --config-path "$DIR/etc/$port.config" \
         -D \
         -vv \
diff --git a/docker/Dockerfile-dhvirtualenv b/docker/Dockerfile-dhvirtualenv
index 224c92352d..ceedbad68a 100644
--- a/docker/Dockerfile-dhvirtualenv
+++ b/docker/Dockerfile-dhvirtualenv
@@ -50,12 +50,15 @@ RUN apt-get update -qq -o Acquire::Languages=none \
         debhelper \
         devscripts \
         dh-systemd \
+        libsystemd-dev \
         lsb-release \
+        pkg-config \
         python3-dev \
         python3-pip \
         python3-setuptools \
         python3-venv \
-        sqlite3
+        sqlite3 \
+        libpq-dev
 
 COPY --from=builder /dh-virtualenv_1.1-1_all.deb /
 
diff --git a/docker/Dockerfile-pgtests b/docker/Dockerfile-pgtests
index 7da8eeb9eb..3bfee845c6 100644
--- a/docker/Dockerfile-pgtests
+++ b/docker/Dockerfile-pgtests
@@ -3,10 +3,10 @@
 FROM matrixdotorg/sytest:latest
 
 # The Sytest image doesn't come with python, so install that
-RUN apt-get -qq install -y python python-dev python-pip
+RUN apt-get update && apt-get -qq install -y python3 python3-dev python3-pip
 
 # We need tox to run the tests in run_pg_tests.sh
-RUN pip install tox
+RUN python3 -m pip install tox
 
 ADD run_pg_tests.sh /pg_tests.sh
 ENTRYPOINT /pg_tests.sh
diff --git a/docker/README.md b/docker/README.md
index b48d74e09c..5a596eecb9 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -14,7 +14,7 @@ This image is designed to run either with an automatically generated
 configuration file or with a custom configuration that requires manual editing.
 
 An easy way to make use of this image is via docker-compose. See the
-[contrib/docker](../contrib/docker) section of the synapse project for
+[contrib/docker](https://github.com/matrix-org/synapse/tree/master/contrib/docker) section of the synapse project for
 examples.
 
 ### Without Compose (harder)
@@ -102,8 +102,9 @@ when ``SYNAPSE_CONFIG_PATH`` is not set.
 * ``SYNAPSE_SERVER_NAME`` (mandatory), the server public hostname.
 * ``SYNAPSE_REPORT_STATS``, (mandatory, ``yes`` or ``no``), enable anonymous
   statistics reporting back to the Matrix project which helps us to get funding.
-* ``SYNAPSE_NO_TLS``, set this variable to disable TLS in Synapse (use this if
-  you run your own TLS-capable reverse proxy).
+* `SYNAPSE_NO_TLS`, (accepts `true`, `false`, `on`, `off`, `1`, `0`, `yes`, `no`]): disable
+  TLS in Synapse (use this if you run your own TLS-capable reverse proxy). Defaults
+  to `false` (ie, TLS is enabled by default).
 * ``SYNAPSE_ENABLE_REGISTRATION``, set this variable to enable registration on
   the Synapse instance.
 * ``SYNAPSE_ALLOW_GUEST``, set this variable to allow guest joining this server.
@@ -160,7 +161,7 @@ specify values for `SYNAPSE_CONFIG_PATH`, `SYNAPSE_SERVER_NAME` and
 example:
 
 ```
-docker run -it --rm
+docker run -it --rm \
     --mount type=volume,src=synapse-data,dst=/data \
     -e SYNAPSE_CONFIG_PATH=/data/homeserver.yaml \
     -e SYNAPSE_SERVER_NAME=my.matrix.host \
diff --git a/docker/run_pg_tests.sh b/docker/run_pg_tests.sh
index e77424c41a..d18d1e4c8e 100755
--- a/docker/run_pg_tests.sh
+++ b/docker/run_pg_tests.sh
@@ -17,4 +17,4 @@ su -c '/usr/lib/postgresql/9.6/bin/pg_ctl -w -D /var/lib/postgresql/data start'
 # Run the tests
 cd /src
 export TRIAL_FLAGS="-j 4"
-tox --workdir=/tmp -e py27-postgres
+tox --workdir=/tmp -e py35-postgres
diff --git a/docker/start.py b/docker/start.py
index 941d9996a8..2da555272a 100755
--- a/docker/start.py
+++ b/docker/start.py
@@ -59,6 +59,18 @@ else:
         if not os.path.exists("/compiled"): os.mkdir("/compiled")
 
         config_path = "/compiled/homeserver.yaml"
+        
+        # Convert SYNAPSE_NO_TLS to boolean if exists
+        if "SYNAPSE_NO_TLS" in environ:
+            tlsanswerstring = str.lower(environ["SYNAPSE_NO_TLS"])
+            if tlsanswerstring in ("true", "on", "1", "yes"):
+                environ["SYNAPSE_NO_TLS"] = True
+            else:
+                if tlsanswerstring in ("false", "off", "0", "no"):
+                    environ["SYNAPSE_NO_TLS"] = False
+                else:
+                    print("Environment variable \"SYNAPSE_NO_TLS\" found but value \"" + tlsanswerstring + "\" unrecognized; exiting.")
+                    sys.exit(2)
 
         convert("/conf/homeserver.yaml", config_path, environ)
         convert("/conf/log.config", "/compiled/log.config", environ)
diff --git a/docs/CAPTCHA_SETUP.rst b/docs/CAPTCHA_SETUP.rst
index 19a204d9ce..0c22ee4ff6 100644
--- a/docs/CAPTCHA_SETUP.rst
+++ b/docs/CAPTCHA_SETUP.rst
@@ -7,6 +7,7 @@ Requires a public/private key pair from:
 
 https://developers.google.com/recaptcha/
 
+Must be a reCAPTCHA v2 key using the "I'm not a robot" Checkbox option
 
 Setting ReCaptcha Keys
 ----------------------
diff --git a/docs/MSC1711_certificates_FAQ.md b/docs/MSC1711_certificates_FAQ.md
index 8eb22656db..7f9a23ff31 100644
--- a/docs/MSC1711_certificates_FAQ.md
+++ b/docs/MSC1711_certificates_FAQ.md
@@ -1,5 +1,22 @@
 # MSC1711 Certificates FAQ
 
+## Historical Note
+This document was originally written to guide server admins through the upgrade
+path towards Synapse 1.0. Specifically,
+[MSC1711](https://github.com/matrix-org/matrix-doc/blob/master/proposals/1711-x509-for-federation.md)
+required that all servers present valid TLS certificates on their federation
+API. Admins were encouraged to achieve compliance from version 0.99.0 (released
+in February 2019) ahead of version 1.0 (released June 2019) enforcing the
+certificate checks.
+
+Much of what follows is now outdated since most admins will have already
+upgraded, however it may be of use to those with old installs returning to the
+project.
+
+If you are setting up a server from scratch you almost certainly should look at
+the [installation guide](INSTALL.md) instead.
+
+## Introduction
 The goal of Synapse 0.99.0 is to act as a stepping stone to Synapse 1.0.0. It
 supports the r0.1 release of the server to server specification, but is
 compatible with both the legacy Matrix federation behaviour (pre-r0.1) as well
@@ -68,16 +85,14 @@ Admins should upgrade and configure a valid CA cert. Homeservers that require a
 .well-known entry (see below), should retain their SRV record and use it
 alongside their .well-known record.
 
-**>= 5th March 2019  - Synapse 1.0.0 is released**
+**10th June 2019  - Synapse 1.0.0 is released**
 
-1.0.0 will land no sooner than 1 month after 0.99.0, leaving server admins one
-month after 5th February to upgrade to 0.99.0 and deploy their certificates. In
+1.0.0 is scheduled for release on 10th June. In
 accordance with the the [S2S spec](https://matrix.org/docs/spec/server_server/r0.1.0.html)
 1.0.0 will enforce certificate validity. This means that any homeserver without a
 valid certificate after this point will no longer be able to federate with
 1.0.0 servers.
 
-
 ## Configuring certificates for compatibility with Synapse 1.0.0
 
 ### If you do not currently have an SRV record
@@ -145,12 +160,11 @@ You can do this with a `.well-known` file as follows:
  1. Keep the SRV record in place - it is needed for backwards compatibility
     with Synapse 0.34 and earlier.
 
- 2. Give synapse a certificate corresponding to the target domain
-    (`customer.example.net` in the above example). Currently Synapse's ACME
-    support [does not support
-    this](https://github.com/matrix-org/synapse/issues/4552), so you will have
-    to acquire a certificate yourself and give it to Synapse via
-    `tls_certificate_path` and `tls_private_key_path`.
+  2. Give Synapse a certificate corresponding to the target domain
+    (`customer.example.net` in the above example). You can either use Synapse's
+    built-in [ACME support](./ACME.md) for this (via the `domain` parameter in
+    the `acme` section), or acquire a certificate yourself and give it to
+    Synapse via `tls_certificate_path` and `tls_private_key_path`.
 
  3. Restart Synapse to ensure the new certificate is loaded.
 
@@ -177,7 +191,6 @@ You can do this with a `.well-known` file as follows:
        on `customer.example.net:8000` it correctly handles HTTP requests with
        Host header set to `customer.example.net:8000`.
 
-
 ## FAQ
 
 ### Synapse 0.99.0 has just been released, what do I need to do right now?
diff --git a/docs/admin_api/account_validity.rst b/docs/admin_api/account_validity.rst
new file mode 100644
index 0000000000..7559de4c57
--- /dev/null
+++ b/docs/admin_api/account_validity.rst
@@ -0,0 +1,42 @@
+Account validity API
+====================
+
+This API allows a server administrator to manage the validity of an account. To
+use it, you must enable the account validity feature (under
+``account_validity``) in Synapse's configuration.
+
+Renew account
+-------------
+
+This API extends the validity of an account by as much time as configured in the
+``period`` parameter from the ``account_validity`` configuration.
+
+The API is::
+
+    POST /_synapse/admin/v1/account_validity/validity
+
+with the following body:
+
+.. code:: json
+
+    {
+        "user_id": "<user ID for the account to renew>",
+        "expiration_ts": 0,
+        "enable_renewal_emails": true
+    }
+
+
+``expiration_ts`` is an optional parameter and overrides the expiration date,
+which otherwise defaults to now + validity period.
+
+``enable_renewal_emails`` is also an optional parameter and enables/disables
+sending renewal emails to the user. Defaults to true.
+
+The API returns with the new expiration date for this account, as a timestamp in
+milliseconds since epoch:
+
+.. code:: json
+
+    {
+        "expiration_ts": 0
+    }
diff --git a/docs/admin_api/delete_group.md b/docs/admin_api/delete_group.md
index d703d108b0..1710488ea8 100644
--- a/docs/admin_api/delete_group.md
+++ b/docs/admin_api/delete_group.md
@@ -8,7 +8,7 @@ being deleted.
 The API is:
 
 ```
-POST /_matrix/client/r0/admin/delete_group/<group_id>
+POST /_synapse/admin/v1/delete_group/<group_id>
 ```
 
 including an `access_token` of a server admin.
diff --git a/docs/admin_api/media_admin_api.md b/docs/admin_api/media_admin_api.md
index abdbc1ea86..5e9f8e5d84 100644
--- a/docs/admin_api/media_admin_api.md
+++ b/docs/admin_api/media_admin_api.md
@@ -4,7 +4,7 @@ This API gets a list of known media in a room.
 
 The API is:
 ```
-GET /_matrix/client/r0/admin/room/<room_id>/media
+GET /_synapse/admin/v1/room/<room_id>/media
 ```
 including an `access_token` of a server admin.
 
diff --git a/docs/admin_api/purge_history_api.rst b/docs/admin_api/purge_history_api.rst
index a5c3dc8149..f7be226fd9 100644
--- a/docs/admin_api/purge_history_api.rst
+++ b/docs/admin_api/purge_history_api.rst
@@ -10,7 +10,7 @@ paginate further back in the room from the point being purged from.
 
 The API is:
 
-``POST /_matrix/client/r0/admin/purge_history/<room_id>[/<event_id>]``
+``POST /_synapse/admin/v1/purge_history/<room_id>[/<event_id>]``
 
 including an ``access_token`` of a server admin.
 
@@ -49,7 +49,7 @@ Purge status query
 
 It is possible to poll for updates on recent purges with a second API;
 
-``GET /_matrix/client/r0/admin/purge_history_status/<purge_id>``
+``GET /_synapse/admin/v1/purge_history_status/<purge_id>``
 
 (again, with a suitable ``access_token``). This API returns a JSON body like
 the following:
diff --git a/docs/admin_api/purge_remote_media.rst b/docs/admin_api/purge_remote_media.rst
index 5deb02a3df..dacd5bc8fb 100644
--- a/docs/admin_api/purge_remote_media.rst
+++ b/docs/admin_api/purge_remote_media.rst
@@ -6,7 +6,7 @@ media.
 
 The API is::
 
-    POST /_matrix/client/r0/admin/purge_media_cache?before_ts=<unix_timestamp_in_ms>&access_token=<access_token>
+    POST /_synapse/admin/v1/purge_media_cache?before_ts=<unix_timestamp_in_ms>&access_token=<access_token>
 
     {}
 
diff --git a/docs/admin_api/register_api.rst b/docs/admin_api/register_api.rst
index 084e74ebf5..3a63109aa0 100644
--- a/docs/admin_api/register_api.rst
+++ b/docs/admin_api/register_api.rst
@@ -12,7 +12,7 @@ is not enabled.
 
 To fetch the nonce, you need to request one from the API::
 
-  > GET /_matrix/client/r0/admin/register
+  > GET /_synapse/admin/v1/register
 
   < {"nonce": "thisisanonce"}
 
@@ -22,7 +22,7 @@ body containing the nonce, username, password, whether they are an admin
 
 As an example::
 
-  > POST /_matrix/client/r0/admin/register
+  > POST /_synapse/admin/v1/register
   > {
      "nonce": "thisisanonce",
      "username": "pepper_roni",
diff --git a/docs/admin_api/server_notices.md b/docs/admin_api/server_notices.md
new file mode 100644
index 0000000000..858b052b84
--- /dev/null
+++ b/docs/admin_api/server_notices.md
@@ -0,0 +1,48 @@
+# Server Notices
+
+The API to send notices is as follows:
+
+```
+POST /_synapse/admin/v1/send_server_notice
+```
+
+or:
+
+```
+PUT /_synapse/admin/v1/send_server_notice/{txnId}
+```
+
+You will need to authenticate with an access token for an admin user.
+
+When using the `PUT` form, retransmissions with the same transaction ID will be
+ignored in the same way as with `PUT
+/_matrix/client/r0/rooms/{roomId}/send/{eventType}/{txnId}`.
+
+The request body should look something like the following:
+
+```json
+{
+    "user_id": "@target_user:server_name",
+    "content": {
+        "msgtype": "m.text",
+        "body": "This is my message"
+    }
+}
+```
+
+You can optionally include the following additional parameters:
+
+* `type`: the type of event. Defaults to `m.room.message`.
+* `state_key`: Setting this will result in a state event being sent.
+
+
+Once the notice has been sent, the API will return the following response:
+
+```json
+{
+    "event_id": "<event_id>"
+}
+```
+
+Note that server notices must be enabled in `homeserver.yaml` before this API
+can be used. See [server_notices.md](../server_notices.md) for more information.
diff --git a/docs/admin_api/user_admin_api.rst b/docs/admin_api/user_admin_api.rst
index d17121a188..213359d0c0 100644
--- a/docs/admin_api/user_admin_api.rst
+++ b/docs/admin_api/user_admin_api.rst
@@ -5,7 +5,7 @@ This API returns information about a specific user account.
 
 The api is::
 
-    GET /_matrix/client/r0/admin/whois/<user_id>
+    GET /_synapse/admin/v1/whois/<user_id>
 
 including an ``access_token`` of a server admin.
 
@@ -50,7 +50,7 @@ references to it).
 
 The api is::
 
-    POST /_matrix/client/r0/admin/deactivate/<user_id>
+    POST /_synapse/admin/v1/deactivate/<user_id>
 
 with a body of:
 
@@ -69,11 +69,11 @@ An empty body may be passed for backwards compatibility.
 Reset password
 ==============
 
-Changes the password of another user.
+Changes the password of another user. This will automatically log the user out of all their devices.
 
 The api is::
 
-    POST /_matrix/client/r0/admin/reset_password/<user_id>
+    POST /_synapse/admin/v1/reset_password/<user_id>
 
 with a body of:
 
diff --git a/docs/admin_api/version_api.rst b/docs/admin_api/version_api.rst
index 30a91b5f43..833d9028be 100644
--- a/docs/admin_api/version_api.rst
+++ b/docs/admin_api/version_api.rst
@@ -8,9 +8,7 @@ contains Synapse version information).
 
 The api is::
 
-    GET /_matrix/client/r0/admin/server_version
-
-including an ``access_token`` of a server admin.
+    GET /_synapse/admin/v1/server_version
 
 It returns a JSON body like the following:
 
diff --git a/docs/federate.md b/docs/federate.md
index b7fc09661c..6d6bb85e15 100644
--- a/docs/federate.md
+++ b/docs/federate.md
@@ -14,9 +14,9 @@ up and will work provided you set the ``server_name`` to match your
 machine's public DNS hostname, and provide Synapse with a TLS certificate
 which is valid for your ``server_name``.
 
-Once you have completed the steps necessary to federate, you should be able to 
-join a room via federation. (A good place to start is ``#synapse:matrix.org`` - a 
-room for Synapse admins.)
+Once federation has been configured, you should be able to join a room over
+federation. A good place to start is ``#synapse:matrix.org`` - a room for
+Synapse admins.
 
 
 ## Delegation
@@ -98,6 +98,77 @@ _matrix._tcp.<server_name>``. In our example, we would expect this:
 Note that the target of a SRV record cannot be an alias (CNAME record): it has to point
 directly to the server hosting the synapse instance.
 
+### Delegation FAQ
+#### When do I need a SRV record or .well-known URI?
+
+If your homeserver listens on the default federation port (8448), and your
+`server_name` points to the host that your homeserver runs on, you do not need an SRV
+record or `.well-known/matrix/server` URI.
+
+For instance, if you registered `example.com` and pointed its DNS A record at a
+fresh server, you could install Synapse on that host,
+giving it a `server_name` of `example.com`, and once [ACME](acme.md) support is enabled,
+it would automatically generate a valid TLS certificate for you via Let's Encrypt
+and no SRV record or .well-known URI would be needed.
+
+This is the common case, although you can add an SRV record or
+`.well-known/matrix/server` URI for completeness if you wish.
+
+**However**, if your server does not listen on port 8448, or if your `server_name`
+does not point to the host that your homeserver runs on, you will need to let
+other servers know how to find it. The way to do this is via .well-known or an
+SRV record.
+
+#### I have created a .well-known URI. Do I still need an SRV record?
+
+As of Synapse 0.99, Synapse will first check for the existence of a .well-known
+URI and follow any delegation it suggests. It will only then check for the
+existence of an SRV record.
+
+That means that the SRV record will often be redundant. However, you should
+remember that there may still be older versions of Synapse in the federation
+which do not understand .well-known URIs, so if you removed your SRV record
+you would no longer be able to federate with them.
+
+It is therefore best to leave the SRV record in place for now. Synapse 0.34 and
+earlier will follow the SRV record (and not care about the invalid
+certificate). Synapse 0.99 and later will follow the .well-known URI, with the
+correct certificate chain.
+
+#### Can I manage my own certificates rather than having Synapse renew certificates itself?
+
+Yes, you are welcome to manage your certificates yourself. Synapse will only
+attempt to obtain certificates from Let's Encrypt if you configure it to do
+so.The only requirement is that there is a valid TLS cert present for
+federation end points.
+
+#### Do you still recommend against using a reverse proxy on the federation port?
+
+We no longer actively recommend against using a reverse proxy. Many admins will
+find it easier to direct federation traffic to a reverse proxy and manage their
+own TLS certificates, and this is a supported configuration.
+
+See [reverse_proxy.rst](reverse_proxy.rst) for information on setting up a
+reverse proxy.
+
+#### Do I still need to give my TLS certificates to Synapse if I am using a reverse proxy?
+
+Practically speaking, this is no longer necessary.
+
+If you are using a reverse proxy for all of your TLS traffic, then you can set
+`no_tls: True` in the Synapse config. In that case, the only reason Synapse
+needs the certificate is to populate a legacy `tls_fingerprints` field in the
+federation API. This is ignored by Synapse 0.99.0 and later, and the only time
+pre-0.99 Synapses will check it is when attempting to fetch the server keys -
+and generally this is delegated via `matrix.org`, which will be running a modern
+version of Synapse.
+
+#### Do I need the same certificate for the client and federation port?
+
+No. There is nothing stopping you from using different certificates,
+particularly if you are using a reverse proxy. However, Synapse will use the
+same certificate on any ports where TLS is configured.
+
 ## Troubleshooting
 
 You can use the [federation tester](
diff --git a/docs/metrics-howto.rst b/docs/metrics-howto.rst
index 5bbb5a4f3a..32b064e2da 100644
--- a/docs/metrics-howto.rst
+++ b/docs/metrics-howto.rst
@@ -48,7 +48,10 @@ How to monitor Synapse metrics using Prometheus
     - job_name: "synapse"
       metrics_path: "/_synapse/metrics"
       static_configs:
-        - targets: ["my.server.here:9092"]
+        - targets: ["my.server.here:port"]
+
+   where ``my.server.here`` is the IP address of Synapse, and ``port`` is the listener port
+   configured with the ``metrics`` resource.
 
    If your prometheus is older than 1.5.2, you will need to replace
    ``static_configs`` in the above with ``target_groups``.
diff --git a/docs/postgres.rst b/docs/postgres.rst
index f7ebbed0c3..33f58e3ace 100644
--- a/docs/postgres.rst
+++ b/docs/postgres.rst
@@ -1,7 +1,29 @@
 Using Postgres
 --------------
 
-Postgres version 9.4 or later is known to work.
+Postgres version 9.5 or later is known to work.
+
+Install postgres client libraries
+=================================
+
+Synapse will require the python postgres client library in order to connect to
+a postgres database.
+
+* If you are using the `matrix.org debian/ubuntu
+  packages <../INSTALL.md#matrixorg-packages>`_,
+  the necessary libraries will already be installed.
+
+* For other pre-built packages, please consult the documentation from the
+  relevant package.
+
+* If you installed synapse `in a virtualenv
+  <../INSTALL.md#installing-from-source>`_, you can install the library with::
+
+      ~/synapse/env/bin/pip install matrix-synapse[postgres]
+
+  (substituting the path to your virtualenv for ``~/synapse/env``, if you used a
+  different path). You will require the postgres development files. These are in
+  the ``libpq-dev`` package on Debian-derived distributions.
 
 Set up database
 ===============
@@ -26,29 +48,6 @@ encoding use, e.g.::
 This would create an appropriate database named ``synapse`` owned by the
 ``synapse_user`` user (which must already exist).
 
-Set up client in Debian/Ubuntu
-===========================
-
-Postgres support depends on the postgres python connector ``psycopg2``. In the
-virtual env::
-
-    sudo apt-get install libpq-dev
-    pip install psycopg2
-
-Set up client in RHEL/CentOs 7
-==============================
-
-Make sure you have the appropriate version of postgres-devel installed. For a
-postgres 9.4, use the postgres 9.4 packages from
-[here](https://wiki.postgresql.org/wiki/YUM_Installation).
-
-As with Debian/Ubuntu, postgres support depends on the postgres python connector
-``psycopg2``. In the virtual env::
-
-    sudo yum install postgresql-devel libpqxx-devel.x86_64
-    export PATH=/usr/pgsql-9.4/bin/:$PATH
-    pip install psycopg2
-
 Tuning Postgres
 ===============
 
diff --git a/docs/reverse_proxy.rst b/docs/reverse_proxy.rst
index cc81ceb84b..7619b1097b 100644
--- a/docs/reverse_proxy.rst
+++ b/docs/reverse_proxy.rst
@@ -69,6 +69,7 @@ Let's assume that we expect clients to connect to our server at
           SSLEngine on
           ServerName matrix.example.com;
 
+          AllowEncodedSlashes NoDecode
           ProxyPass /_matrix http://127.0.0.1:8008/_matrix nocanon
           ProxyPassReverse /_matrix http://127.0.0.1:8008/_matrix
       </VirtualHost>
@@ -77,6 +78,7 @@ Let's assume that we expect clients to connect to our server at
           SSLEngine on
           ServerName example.com;
           
+          AllowEncodedSlashes NoDecode
           ProxyPass /_matrix http://127.0.0.1:8008/_matrix nocanon
           ProxyPassReverse /_matrix http://127.0.0.1:8008/_matrix
       </VirtualHost>
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index f6b3fac6cd..bd80d97a93 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -69,6 +69,30 @@ pid_file: DATADIR/homeserver.pid
 #
 #use_presence: false
 
+# Whether to require authentication to retrieve profile data (avatars,
+# display names) of other users through the client API. Defaults to
+# 'false'. Note that profile data is also available via the federation
+# API, so this setting is of limited value if federation is enabled on
+# the server.
+#
+#require_auth_for_profile_requests: true
+
+# If set to 'true', requires authentication to access the server's
+# public rooms directory through the client API, and forbids any other
+# homeserver to fetch it via federation. Defaults to 'false'.
+#
+#restrict_public_rooms_to_local_users: true
+
+# The default room version for newly created rooms.
+#
+# Known room versions are listed here:
+# https://matrix.org/docs/spec/#complete-list-of-room-versions
+#
+# For example, for room version 1, default_room_version should be set
+# to "1".
+#
+#default_room_version: "4"
+
 # The GC threshold parameters to pass to `gc.set_threshold`, if defined
 #
 #gc_thresholds: [700, 10, 10]
@@ -101,6 +125,24 @@ pid_file: DATADIR/homeserver.pid
 #  - nyc.example.com
 #  - syd.example.com
 
+# Prevent federation requests from being sent to the following
+# blacklist IP address CIDR ranges. If this option is not specified, or
+# specified with an empty list, no ip range blacklist will be enforced.
+#
+# (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+# listed here, since they correspond to unroutable addresses.)
+#
+federation_ip_range_blacklist:
+  - '127.0.0.0/8'
+  - '10.0.0.0/8'
+  - '172.16.0.0/12'
+  - '192.168.0.0/16'
+  - '100.64.0.0/10'
+  - '169.254.0.0/16'
+  - '::1/128'
+  - 'fe80::/64'
+  - 'fc00::/7'
+
 # List of ports that Synapse should listen on, their purpose and their
 # configuration.
 #
@@ -136,8 +178,8 @@ pid_file: DATADIR/homeserver.pid
 #
 # Valid resource names are:
 #
-#   client: the client-server API (/_matrix/client). Also implies 'media' and
-#       'static'.
+#   client: the client-server API (/_matrix/client), and the synapse admin
+#       API (/_synapse/admin). Also implies 'media' and 'static'.
 #
 #   consent: user consent forms (/_matrix/consent). See
 #       docs/consent_tracking.md.
@@ -219,6 +261,22 @@ listeners:
 
 # Monthly Active User Blocking
 #
+# Used in cases where the admin or server owner wants to limit to the
+# number of monthly active users.
+#
+# 'limit_usage_by_mau' disables/enables monthly active user blocking. When
+# anabled and a limit is reached the server returns a 'ResourceLimitError'
+# with error type Codes.RESOURCE_LIMIT_EXCEEDED
+#
+# 'max_mau_value' is the hard limit of monthly active users above which
+# the server will start blocking user actions.
+#
+# 'mau_trial_days' is a means to add a grace period for active users. It
+# means that users must be active for this number of days before they
+# can be considered active and guards against the case where lots of users
+# sign up in a short space of time never to return after their initial
+# session.
+#
 #limit_usage_by_mau: False
 #max_mau_value: 50
 #mau_trial_days: 2
@@ -236,6 +294,20 @@ listeners:
 #  - medium: 'email'
 #    address: 'reserved_user@example.com'
 
+# Used by phonehome stats to group together related servers.
+#server_context: context
+
+# Whether to require a user to be in the room to add an alias to it.
+# Defaults to 'true'.
+#
+#require_membership_for_aliases: false
+
+# Whether to allow per-room membership profiles through the send of membership
+# events with profile information that differ from the target's global profile.
+# Defaults to 'true'.
+#
+#allow_per_room_profiles: false
+
 
 ## TLS ##
 
@@ -257,6 +329,40 @@ listeners:
 #
 #tls_private_key_path: "CONFDIR/SERVERNAME.tls.key"
 
+# Whether to verify TLS server certificates for outbound federation requests.
+#
+# Defaults to `true`. To disable certificate verification, uncomment the
+# following line.
+#
+#federation_verify_certificates: false
+
+# Skip federation certificate verification on the following whitelist
+# of domains.
+#
+# This setting should only be used in very specific cases, such as
+# federation over Tor hidden services and similar. For private networks
+# of homeservers, you likely want to use a private CA instead.
+#
+# Only effective if federation_verify_certicates is `true`.
+#
+#federation_certificate_verification_whitelist:
+#  - lon.example.com
+#  - *.domain.com
+#  - *.onion
+
+# List of custom certificate authorities for federation traffic.
+#
+# This setting should only normally be used within a private network of
+# homeservers.
+#
+# Note that this list will replace those that are provided by your
+# operating environment. Certificates must be in PEM format.
+#
+#federation_custom_ca_list:
+#  - myCA1.pem
+#  - myCA2.pem
+#  - myCA3.pem
+
 # ACME support: This will configure Synapse to request a valid TLS certificate
 # for your configured `server_name` via Let's Encrypt.
 #
@@ -372,21 +478,15 @@ log_config: "CONFDIR/SERVERNAME.log.config"
 
 ## Ratelimiting ##
 
-# Number of messages a client can send per second
-#
-#rc_messages_per_second: 0.2
-
-# Number of message a client can send before being throttled
-#
-#rc_message_burst_count: 10.0
-
-# Ratelimiting settings for registration and login.
+# Ratelimiting settings for client actions (registration, login, messaging).
 #
 # Each ratelimiting configuration is made of two parameters:
 #   - per_second: number of requests a client can send per second.
 #   - burst_count: number of requests a client can send before being throttled.
 #
 # Synapse currently uses the following configurations:
+#   - one for messages that ratelimits sending based on the account the client
+#     is using
 #   - one for registration that ratelimits registration requests based on the
 #     client's IP address.
 #   - one for login that ratelimits login requests based on the client's IP
@@ -399,6 +499,10 @@ log_config: "CONFDIR/SERVERNAME.log.config"
 #
 # The defaults are as shown below.
 #
+#rc_message:
+#  per_second: 0.2
+#  burst_count: 10
+#
 #rc_registration:
 #  per_second: 0.17
 #  burst_count: 3
@@ -414,29 +518,28 @@ log_config: "CONFDIR/SERVERNAME.log.config"
 #    per_second: 0.17
 #    burst_count: 3
 
-# The federation window size in milliseconds
-#
-#federation_rc_window_size: 1000
 
-# The number of federation requests from a single server in a window
-# before the server will delay processing the request.
+# Ratelimiting settings for incoming federation
 #
-#federation_rc_sleep_limit: 10
-
-# The duration in milliseconds to delay processing events from
-# remote servers by if they go over the sleep limit.
+# The rc_federation configuration is made up of the following settings:
+#   - window_size: window size in milliseconds
+#   - sleep_limit: number of federation requests from a single server in
+#     a window before the server will delay processing the request.
+#   - sleep_delay: duration in milliseconds to delay processing events
+#     from remote servers by if they go over the sleep limit.
+#   - reject_limit: maximum number of concurrent federation requests
+#     allowed from a single server
+#   - concurrent: number of federation requests to concurrently process
+#     from a single server
 #
-#federation_rc_sleep_delay: 500
-
-# The maximum number of concurrent federation requests allowed
-# from a single server
+# The defaults are as shown below.
 #
-#federation_rc_reject_limit: 50
-
-# The number of federation requests to concurrently process from a
-# single server
-#
-#federation_rc_concurrent: 3
+#rc_federation:
+#  window_size: 1000
+#  sleep_limit: 10
+#  sleep_delay: 500
+#  reject_limit: 50
+#  concurrent: 3
 
 # Target outgoing federation transaction frequency for sending read-receipts,
 # per-room.
@@ -506,11 +609,12 @@ uploads_path: "DATADIR/uploads"
 #    height: 600
 #    method: scale
 
-# Is the preview URL API enabled?  If enabled, you *must* specify
-# an explicit url_preview_ip_range_blacklist of IPs that the spider is
-# denied from accessing.
+# Is the preview URL API enabled?
 #
-#url_preview_enabled: false
+# 'false' by default: uncomment the following to enable it (and specify a
+# url_preview_ip_range_blacklist blacklist).
+#
+#url_preview_enabled: true
 
 # List of IP address CIDR ranges that the URL preview spider is denied
 # from accessing.  There are no defaults: you must explicitly
@@ -520,6 +624,12 @@ uploads_path: "DATADIR/uploads"
 # synapse to issue arbitrary GET requests to your internal services,
 # causing serious security issues.
 #
+# (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+# listed here, since they correspond to unroutable addresses.)
+#
+# This must be specified if url_preview_enabled is set. It is recommended that
+# you uncomment the following list as a starting point.
+#
 #url_preview_ip_range_blacklist:
 #  - '127.0.0.0/8'
 #  - '10.0.0.0/8'
@@ -530,7 +640,7 @@ uploads_path: "DATADIR/uploads"
 #  - '::1/128'
 #  - 'fe80::/64'
 #  - 'fc00::/7'
-#
+
 # List of IP address CIDR ranges that the URL preview spider is allowed
 # to access even if they are specified in url_preview_ip_range_blacklist.
 # This is useful for specifying exceptions to wide-ranging blacklisted
@@ -643,6 +753,42 @@ uploads_path: "DATADIR/uploads"
 #
 #enable_registration: false
 
+# Optional account validity configuration. This allows for accounts to be denied
+# any request after a given period.
+#
+# ``enabled`` defines whether the account validity feature is enabled. Defaults
+# to False.
+#
+# ``period`` allows setting the period after which an account is valid
+# after its registration. When renewing the account, its validity period
+# will be extended by this amount of time. This parameter is required when using
+# the account validity feature.
+#
+# ``renew_at`` is the amount of time before an account's expiry date at which
+# Synapse will send an email to the account's email address with a renewal link.
+# This needs the ``email`` and ``public_baseurl`` configuration sections to be
+# filled.
+#
+# ``renew_email_subject`` is the subject of the email sent out with the renewal
+# link. ``%(app)s`` can be used as a placeholder for the ``app_name`` parameter
+# from the ``email`` section.
+#
+# Once this feature is enabled, Synapse will look for registered users without an
+# expiration date at startup and will add one to every account it found using the
+# current settings at that time.
+# This means that, if a validity period is set, and Synapse is restarted (it will
+# then derive an expiration date from the current validity period), and some time
+# after that the validity period changes and Synapse is restarted, the users'
+# expiration dates won't be updated unless their account is manually renewed. This
+# date will be randomly selected within a range [now + period - d ; now + period],
+# where d is equal to 10% of the validity period.
+#
+#account_validity:
+#  enabled: True
+#  period: 6w
+#  renew_at: 1w
+#  renew_email_subject: "Renew your %(app)s account"
+
 # The user must provide all of the below types of 3PID when registering.
 #
 #registrations_require_3pid:
@@ -806,12 +952,43 @@ signing_key_path: "CONFDIR/SERVERNAME.signing.key"
 
 # The trusted servers to download signing keys from.
 #
-#perspectives:
-#  servers:
-#    "matrix.org":
-#      verify_keys:
-#        "ed25519:auto":
-#          key: "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
+# When we need to fetch a signing key, each server is tried in parallel.
+#
+# Normally, the connection to the key server is validated via TLS certificates.
+# Additional security can be provided by configuring a `verify key`, which
+# will make synapse check that the response is signed by that key.
+#
+# This setting supercedes an older setting named `perspectives`. The old format
+# is still supported for backwards-compatibility, but it is deprecated.
+#
+# Options for each entry in the list include:
+#
+#    server_name: the name of the server. required.
+#
+#    verify_keys: an optional map from key id to base64-encoded public key.
+#       If specified, we will check that the response is signed by at least
+#       one of the given keys.
+#
+#    accept_keys_insecurely: a boolean. Normally, if `verify_keys` is unset,
+#       and federation_verify_certificates is not `true`, synapse will refuse
+#       to start, because this would allow anyone who can spoof DNS responses
+#       to masquerade as the trusted key server. If you know what you are doing
+#       and are sure that your network environment provides a secure connection
+#       to the key server, you can set this to `true` to override this
+#       behaviour.
+#
+# An example configuration might look like:
+#
+#trusted_key_servers:
+#  - server_name: "my_trusted_server.example.com"
+#    verify_keys:
+#      "ed25519:auto": "abcdefghijklmnopqrstuvwxyzabcdefghijklmopqr"
+#  - server_name: "my_other_trusted_server.example.com"
+#
+# The default configuration is:
+#
+#trusted_key_servers:
+#  - server_name: "matrix.org"
 
 
 # Enable SAML2 for registration and login. Uses pysaml2.
@@ -888,10 +1065,8 @@ password_config:
 
 
 
-# Enable sending emails for notification events
-# Defining a custom URL for Riot is only needed if email notifications
-# should contain links to a self-hosted installation of Riot; when set
-# the "app_name" setting is ignored.
+# Enable sending emails for password resets, notification events or
+# account expiry notices
 #
 # If your SMTP server requires authentication, the optional smtp_user &
 # smtp_pass variables should be used
@@ -899,19 +1074,64 @@ password_config:
 #email:
 #   enable_notifs: false
 #   smtp_host: "localhost"
-#   smtp_port: 25
+#   smtp_port: 25 # SSL: 465, STARTTLS: 587
 #   smtp_user: "exampleusername"
 #   smtp_pass: "examplepassword"
 #   require_transport_security: False
 #   notif_from: "Your Friendly %(app)s Home Server <noreply@example.com>"
 #   app_name: Matrix
-#   # if template_dir is unset, uses the example templates that are part of
-#   # the Synapse distribution.
+#
+#   # Enable email notifications by default
+#   notif_for_new_users: True
+#
+#   # Defining a custom URL for Riot is only needed if email notifications
+#   # should contain links to a self-hosted installation of Riot; when set
+#   # the "app_name" setting is ignored
+#   riot_base_url: "http://localhost/riot"
+#
+#   # Enable sending password reset emails via the configured, trusted
+#   # identity servers
+#   #
+#   # IMPORTANT! This will give a malicious or overtaken identity server
+#   # the ability to reset passwords for your users! Make absolutely sure
+#   # that you want to do this! It is strongly recommended that password
+#   # reset emails be sent by the homeserver instead
+#   #
+#   # If this option is set to false and SMTP options have not been
+#   # configured, resetting user passwords via email will be disabled
+#   #trust_identity_server_for_password_resets: false
+#
+#   # Configure the time that a validation email or text message code
+#   # will expire after sending
+#   #
+#   # This is currently used for password resets
+#   #validation_token_lifetime: 1h
+#
+#   # Template directory. All template files should be stored within this
+#   # directory
+#   #
 #   #template_dir: res/templates
+#
+#   # Templates for email notifications
+#   #
 #   notif_template_html: notif_mail.html
 #   notif_template_text: notif_mail.txt
-#   notif_for_new_users: True
-#   riot_base_url: "http://localhost/riot"
+#
+#   # Templates for account expiry notices
+#   #
+#   expiry_template_html: notice_expiry.html
+#   expiry_template_text: notice_expiry.txt
+#
+#   # Templates for password reset emails sent by the homeserver
+#   #
+#   #password_reset_template_html: password_reset.html
+#   #password_reset_template_text: password_reset.txt
+#
+#   # Templates for password reset success and failure pages that a user
+#   # will see after attempting to reset their password
+#   #
+#   #password_reset_template_success_html: password_reset_success.html
+#   #password_reset_template_failure_html: password_reset_failure.html
 
 
 #password_providers:
@@ -972,9 +1192,9 @@ password_config:
 #
 # 'search_all_users' defines whether to search all users visible to your HS
 # when searching the user directory, rather than limiting to users visible
-# in public rooms.  Defaults to false.  If you set it True, you'll have to run
-# UPDATE user_directory_stream_pos SET stream_id = NULL;
-# on your database to tell it to rebuild the user_directory search indexes.
+# in public rooms.  Defaults to false.  If you set it True, you'll have to
+# rebuild the user_directory search indexes, see
+# https://github.com/matrix-org/synapse/blob/master/docs/user_directory.md
 #
 #user_directory:
 #  enabled: true
@@ -1032,6 +1252,22 @@ password_config:
 #
 
 
+
+# Local statistics collection. Used in populating the room directory.
+#
+# 'bucket_size' controls how large each statistics timeslice is. It can
+# be defined in a human readable short form -- e.g. "1d", "1y".
+#
+# 'retention' controls how long historical statistics will be kept for.
+# It can be defined in a human readable short form -- e.g. "1d", "1y".
+#
+#
+#stats:
+#   enabled: true
+#   bucket_size: 1d
+#   retention: 1y
+
+
 # Server Notices room configuration
 #
 # Uncomment this section to enable a room which can be used to send notices
@@ -1115,3 +1351,16 @@ password_config:
 #    alias: "*"
 #    room_id: "*"
 #    action: allow
+
+
+# Server admins can define a Python module that implements extra rules for
+# allowing or denying incoming events. In order to work, this module needs to
+# override the methods defined in synapse/events/third_party_rules.py.
+#
+# This feature is designed to be used in closed federations only, where each
+# participating server enforces the same rules.
+#
+#third_party_event_rules:
+#  module: "my_custom_project.SuperRulesSet"
+#  config:
+#    example_option: 'things'
diff --git a/docs/server_notices.md b/docs/server_notices.md
index 58f8776319..950a6608e9 100644
--- a/docs/server_notices.md
+++ b/docs/server_notices.md
@@ -1,5 +1,4 @@
-Server Notices
-==============
+# Server Notices
 
 'Server Notices' are a new feature introduced in Synapse 0.30. They provide a
 channel whereby server administrators can send messages to users on the server.
@@ -11,8 +10,7 @@ they may also find a use for features such as "Message of the day".
 This is a feature specific to Synapse, but it uses standard Matrix
 communication mechanisms, so should work with any Matrix client.
 
-User experience
----------------
+## User experience
 
 When the user is first sent a server notice, they will get an invitation to a
 room (typically called 'Server Notices', though this is configurable in
@@ -29,8 +27,7 @@ levels.
 Having joined the room, the user can leave the room if they want. Subsequent
 server notices will then cause a new room to be created.
 
-Synapse configuration
----------------------
+## Synapse configuration
 
 Server notices come from a specific user id on the server. Server
 administrators are free to choose the user id - something like `server` is
@@ -58,17 +55,7 @@ room which will be created.
 `system_mxid_display_name` and `system_mxid_avatar_url` can be used to set the
 displayname and avatar of the Server Notices user.
 
-Sending notices
----------------
+## Sending notices
 
-As of the current version of synapse, there is no convenient interface for
-sending notices (other than the automated ones sent as part of consent
-tracking).
-
-In the meantime, it is possible to test this feature using the manhole. Having
-gone into the manhole as described in [manhole.md](manhole.md), a notice can be
-sent with something like:
-
-```
->>> hs.get_server_notices_manager().send_notice('@user:server.com', {'msgtype':'m.text', 'body':'foo'})
-```
+To send server notices to users you can use the
+[admin_api](admin_api/server_notices.md).
diff --git a/docs/user_directory.md b/docs/user_directory.md
index 4c8ee44f37..e64aa453cc 100644
--- a/docs/user_directory.md
+++ b/docs/user_directory.md
@@ -7,11 +7,7 @@ who are present in a publicly viewable room present on the server.
 
 The directory info is stored in various tables, which can (typically after
 DB corruption) get stale or out of sync.  If this happens, for now the
-quickest solution to fix it is:
-
-```
-UPDATE user_directory_stream_pos SET stream_id = NULL;
-```
-
-and restart the synapse, which should then start a background task to
+solution to fix it is to execute the SQL here
+https://github.com/matrix-org/synapse/blob/master/synapse/storage/schema/delta/53/user_dir_populate.sql
+and then restart synapse. This should then start a background task to
 flush the current tables and regenerate the directory.
diff --git a/docs/workers.rst b/docs/workers.rst
index d80fc04d2e..aa4e7a120b 100644
--- a/docs/workers.rst
+++ b/docs/workers.rst
@@ -227,6 +227,12 @@ following regular expressions::
     ^/_matrix/client/(api/v1|r0|unstable)/account/3pid$
     ^/_matrix/client/(api/v1|r0|unstable)/keys/query$
     ^/_matrix/client/(api/v1|r0|unstable)/keys/changes$
+    ^/_matrix/client/versions$
+    ^/_matrix/client/(api/v1|r0|unstable)/voip/turnServer$
+
+Additionally, the following REST endpoints can be handled for GET requests::
+
+    ^/_matrix/client/(api/v1|r0|unstable)/pushrules/.*$
 
 Additionally, the following REST endpoints can be handled, but all requests must
 be routed to the same instance::
diff --git a/scripts-dev/build_debian_packages b/scripts-dev/build_debian_packages
index 6b9be99060..93305ee9b1 100755
--- a/scripts-dev/build_debian_packages
+++ b/scripts-dev/build_debian_packages
@@ -24,6 +24,7 @@ DISTS = (
     "ubuntu:xenial",
     "ubuntu:bionic",
     "ubuntu:cosmic",
+    "ubuntu:disco",
 )
 
 DESC = '''\
diff --git a/scripts-dev/federation_client.py b/scripts-dev/federation_client.py
index e0287c8c6c..41e7b24418 100755
--- a/scripts-dev/federation_client.py
+++ b/scripts-dev/federation_client.py
@@ -21,7 +21,8 @@ import argparse
 import base64
 import json
 import sys
-from urlparse import urlparse, urlunparse
+
+from six.moves.urllib import parse as urlparse
 
 import nacl.signing
 import requests
@@ -145,7 +146,7 @@ def request_json(method, origin_name, origin_key, destination, path, content):
 
     for key, sig in signed_json["signatures"][origin_name].items():
         header = "X-Matrix origin=%s,key=\"%s\",sig=\"%s\"" % (origin_name, key, sig)
-        authorization_headers.append(bytes(header))
+        authorization_headers.append(header.encode("ascii"))
         print("Authorization: %s" % header, file=sys.stderr)
 
     dest = "matrix://%s%s" % (destination, path)
@@ -250,7 +251,7 @@ def read_args_from_config(args):
 
 class MatrixConnectionAdapter(HTTPAdapter):
     @staticmethod
-    def lookup(s):
+    def lookup(s, skip_well_known=False):
         if s[-1] == ']':
             # ipv6 literal (with no port)
             return s, 8448
@@ -263,19 +264,51 @@ class MatrixConnectionAdapter(HTTPAdapter):
                 raise ValueError("Invalid host:port '%s'" % s)
             return out[0], port
 
+        # try a .well-known lookup
+        if not skip_well_known:
+            well_known = MatrixConnectionAdapter.get_well_known(s)
+            if well_known:
+                return MatrixConnectionAdapter.lookup(
+                    well_known, skip_well_known=True
+                )
+
         try:
             srv = srvlookup.lookup("matrix", "tcp", s)[0]
             return srv.host, srv.port
         except Exception:
             return s, 8448
 
+    @staticmethod
+    def get_well_known(server_name):
+        uri = "https://%s/.well-known/matrix/server" % (server_name, )
+        print("fetching %s" % (uri, ), file=sys.stderr)
+
+        try:
+            resp = requests.get(uri)
+            if resp.status_code != 200:
+                print("%s gave %i" % (uri, resp.status_code), file=sys.stderr)
+                return None
+
+            parsed_well_known = resp.json()
+            if not isinstance(parsed_well_known, dict):
+                raise Exception("not a dict")
+            if "m.server" not in parsed_well_known:
+                raise Exception("Missing key 'm.server'")
+            new_name = parsed_well_known['m.server']
+            print("well-known lookup gave %s" % (new_name, ), file=sys.stderr)
+            return new_name
+
+        except Exception as e:
+            print("Invalid response from %s: %s" % (uri, e, ), file=sys.stderr)
+        return None
+
     def get_connection(self, url, proxies=None):
-        parsed = urlparse(url)
+        parsed = urlparse.urlparse(url)
 
         (host, port) = self.lookup(parsed.netloc)
         netloc = "%s:%d" % (host, port)
         print("Connecting to %s" % (netloc,), file=sys.stderr)
-        url = urlunparse(
+        url = urlparse.urlunparse(
             ("https", netloc, parsed.path, parsed.params, parsed.query, parsed.fragment)
         )
         return super(MatrixConnectionAdapter, self).get_connection(url, proxies)
diff --git a/scripts-dev/list_url_patterns.py b/scripts-dev/list_url_patterns.py
index da027be26e..62e5a07472 100755
--- a/scripts-dev/list_url_patterns.py
+++ b/scripts-dev/list_url_patterns.py
@@ -20,9 +20,7 @@ class CallVisitor(ast.NodeVisitor):
         else:
             return
 
-        if name == "client_path_patterns":
-            PATTERNS_V1.append(node.args[0].s)
-        elif name == "client_v2_patterns":
+        if name == "client_patterns":
             PATTERNS_V2.append(node.args[0].s)
 
 
diff --git a/scripts/generate_signing_key.py b/scripts/generate_signing_key.py
new file mode 100755
index 0000000000..36e9140b50
--- /dev/null
+++ b/scripts/generate_signing_key.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import argparse
+import sys
+
+from signedjson.key import generate_signing_key, write_signing_keys
+
+from synapse.util.stringutils import random_string
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "-o", "--output_file",
+
+        type=argparse.FileType('w'),
+        default=sys.stdout,
+        help="Where to write the output to",
+    )
+    args = parser.parse_args()
+
+    key_id = "a_" + random_string(4)
+    key = generate_signing_key(key_id),
+    write_signing_keys(args.output_file, key)
diff --git a/scripts/synapse_port_db b/scripts/synapse_port_db
index 3de394b035..b6ba19c776 100755
--- a/scripts/synapse_port_db
+++ b/scripts/synapse_port_db
@@ -54,19 +54,16 @@ BOOLEAN_COLUMNS = {
     "group_roles": ["is_public"],
     "local_group_membership": ["is_publicised", "is_admin"],
     "e2e_room_keys": ["is_verified"],
+    "account_validity": ["email_sent"],
 }
 
 
 APPEND_ONLY_TABLES = [
-    "event_content_hashes",
     "event_reference_hashes",
-    "event_signatures",
-    "event_edge_hashes",
     "events",
     "event_json",
     "state_events",
     "room_memberships",
-    "feedback",
     "topics",
     "room_names",
     "rooms",
@@ -88,7 +85,6 @@ APPEND_ONLY_TABLES = [
     "event_search",
     "presence_stream",
     "push_rules_stream",
-    "current_state_resets",
     "ex_outlier_stream",
     "cache_invalidation_stream",
     "public_room_list_stream",
diff --git a/setup.py b/setup.py
index 55b1b10a77..3492cdc5a0 100755
--- a/setup.py
+++ b/setup.py
@@ -86,13 +86,9 @@ long_description = read_file(("README.rst",))
 
 REQUIREMENTS = dependencies['REQUIREMENTS']
 CONDITIONAL_REQUIREMENTS = dependencies['CONDITIONAL_REQUIREMENTS']
+ALL_OPTIONAL_REQUIREMENTS = dependencies['ALL_OPTIONAL_REQUIREMENTS']
 
 # Make `pip install matrix-synapse[all]` install all the optional dependencies.
-ALL_OPTIONAL_REQUIREMENTS = set()
-
-for optional_deps in CONDITIONAL_REQUIREMENTS.values():
-    ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
-
 CONDITIONAL_REQUIREMENTS["all"] = list(ALL_OPTIONAL_REQUIREMENTS)
 
 
@@ -106,6 +102,16 @@ setup(
     include_package_data=True,
     zip_safe=False,
     long_description=long_description,
+    python_requires='~=3.5',
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Topic :: Communications :: Chat',
+        'License :: OSI Approved :: Apache Software License',
+        'Programming Language :: Python :: 3 :: Only',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+    ],
     scripts=["synctl"] + glob.glob("scripts/*"),
     cmdclass={'test': TestCommand},
 )
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 6bb5a8b24d..0c01546789 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -17,6 +17,13 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
+import sys
+
+# Check that we're not running on an unsupported Python version.
+if sys.version_info < (3, 5):
+    print("Synapse requires Python 3.5 or above.")
+    sys.exit(1)
+
 try:
     from twisted.internet import protocol
     from twisted.internet.protocol import Factory
@@ -27,4 +34,4 @@ try:
 except ImportError:
     pass
 
-__version__ = "0.99.3"
+__version__ = "1.0.0"
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index e8112d5f05..79e2808dc5 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -64,6 +64,8 @@ class Auth(object):
         self.token_cache = LruCache(CACHE_SIZE_FACTOR * 10000)
         register_cache("cache", "token_cache", self.token_cache)
 
+        self._account_validity = hs.config.account_validity
+
     @defer.inlineCallbacks
     def check_from_context(self, room_version, event, context, do_sig_check=True):
         prev_state_ids = yield context.get_prev_state_ids(self.store)
@@ -182,11 +184,22 @@ class Auth(object):
         return event_auth.get_public_keys(invite_event)
 
     @defer.inlineCallbacks
-    def get_user_by_req(self, request, allow_guest=False, rights="access"):
+    def get_user_by_req(
+        self,
+        request,
+        allow_guest=False,
+        rights="access",
+        allow_expired=False,
+    ):
         """ Get a registered user's ID.
 
         Args:
             request - An HTTP request with an access_token query parameter.
+            allow_expired - Whether to allow the request through even if the account is
+                expired. If true, Synapse will still require an access token to be
+                provided but won't check if the account it belongs to has expired. This
+                works thanks to /login delivering access tokens regardless of accounts'
+                expiration.
         Returns:
             defer.Deferred: resolves to a ``synapse.types.Requester`` object
         Raises:
@@ -226,6 +239,17 @@ class Auth(object):
             token_id = user_info["token_id"]
             is_guest = user_info["is_guest"]
 
+            # Deny the request if the user account has expired.
+            if self._account_validity.enabled and not allow_expired:
+                user_id = user.to_string()
+                expiration_ts = yield self.store.get_expiration_ts_for_user(user_id)
+                if expiration_ts is not None and self.clock.time_msec() >= expiration_ts:
+                    raise AuthError(
+                        403,
+                        "User account has expired",
+                        errcode=Codes.EXPIRED_ACCOUNT,
+                    )
+
             # device_id may not be present if get_user_by_access_token has been
             # stubbed out.
             device_id = user_info.get("device_id")
@@ -543,7 +567,7 @@ class Auth(object):
         """ Check if the given user is a local server admin.
 
         Args:
-            user (str): mxid of user to check
+            user (UserID): user to check
 
         Returns:
             bool: True if the user is an admin
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index dd373fa4b8..ee129c8689 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2017 Vector Creations Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,6 +20,12 @@
 # the "depth" field on events is limited to 2**63 - 1
 MAX_DEPTH = 2**63 - 1
 
+# the maximum length for a room alias is 255 characters
+MAX_ALIAS_LENGTH = 255
+
+# the maximum length for a user id is 255 characters
+MAX_USERID_LENGTH = 255
+
 
 class Membership(object):
 
@@ -73,6 +79,7 @@ class EventTypes(object):
 
     RoomHistoryVisibility = "m.room.history_visibility"
     CanonicalAlias = "m.room.canonical_alias"
+    Encryption = "m.room.encryption"
     RoomAvatar = "m.room.avatar"
     RoomEncryption = "m.room.encryption"
     GuestAccess = "m.room.guest_access"
@@ -113,3 +120,11 @@ class UserTypes(object):
     """
     SUPPORT = "support"
     ALL_USER_TYPES = (SUPPORT,)
+
+
+class RelationTypes(object):
+    """The types of relations known to this server.
+    """
+    ANNOTATION = "m.annotation"
+    REPLACE = "m.replace"
+    REFERENCE = "m.reference"
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 0b464834ce..66201d6efe 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -60,6 +60,7 @@ class Codes(object):
     UNSUPPORTED_ROOM_VERSION = "M_UNSUPPORTED_ROOM_VERSION"
     INCOMPATIBLE_ROOM_VERSION = "M_INCOMPATIBLE_ROOM_VERSION"
     WRONG_ROOM_KEYS_VERSION = "M_WRONG_ROOM_KEYS_VERSION"
+    EXPIRED_ACCOUNT = "ORG_MATRIX_EXPIRED_ACCOUNT"
 
 
 class CodeMessageException(RuntimeError):
@@ -327,9 +328,32 @@ class RoomKeysVersionError(SynapseError):
         self.current_version = current_version
 
 
-class IncompatibleRoomVersionError(SynapseError):
-    """A server is trying to join a room whose version it does not support."""
+class UnsupportedRoomVersionError(SynapseError):
+    """The client's request to create a room used a room version that the server does
+    not support."""
+    def __init__(self):
+        super(UnsupportedRoomVersionError, self).__init__(
+            code=400,
+            msg="Homeserver does not support this room version",
+            errcode=Codes.UNSUPPORTED_ROOM_VERSION,
+        )
 
+
+class ThreepidValidationError(SynapseError):
+    """An error raised when there was a problem authorising an event."""
+
+    def __init__(self, *args, **kwargs):
+        if "errcode" not in kwargs:
+            kwargs["errcode"] = Codes.FORBIDDEN
+        super(ThreepidValidationError, self).__init__(*args, **kwargs)
+
+
+class IncompatibleRoomVersionError(SynapseError):
+    """A server is trying to join a room whose version it does not support.
+
+    Unlike UnsupportedRoomVersionError, it is specific to the case of the make_join
+    failing.
+    """
     def __init__(self, room_version):
         super(IncompatibleRoomVersionError, self).__init__(
             code=400,
diff --git a/synapse/api/room_versions.py b/synapse/api/room_versions.py
index e77abe1040..d644803d38 100644
--- a/synapse/api/room_versions.py
+++ b/synapse/api/room_versions.py
@@ -19,13 +19,15 @@ class EventFormatVersions(object):
     """This is an internal enum for tracking the version of the event format,
     independently from the room version.
     """
-    V1 = 1   # $id:server format
-    V2 = 2   # MSC1659-style $hash format: introduced for room v3
+    V1 = 1   # $id:server event id format
+    V2 = 2   # MSC1659-style $hash event id format: introduced for room v3
+    V3 = 3   # MSC1884-style $hash format: introduced for room v4
 
 
 KNOWN_EVENT_FORMAT_VERSIONS = {
     EventFormatVersions.V1,
     EventFormatVersions.V2,
+    EventFormatVersions.V3,
 }
 
 
@@ -48,6 +50,7 @@ class RoomVersion(object):
     disposition = attr.ib()     # str; one of the RoomDispositions
     event_format = attr.ib()    # int; one of the EventFormatVersions
     state_res = attr.ib()       # int; one of the StateResolutionVersions
+    enforce_key_validity = attr.ib()  # bool
 
 
 class RoomVersions(object):
@@ -56,29 +59,36 @@ class RoomVersions(object):
         RoomDisposition.STABLE,
         EventFormatVersions.V1,
         StateResolutionVersions.V1,
-    )
-    STATE_V2_TEST = RoomVersion(
-        "state-v2-test",
-        RoomDisposition.UNSTABLE,
-        EventFormatVersions.V1,
-        StateResolutionVersions.V2,
+        enforce_key_validity=False,
     )
     V2 = RoomVersion(
         "2",
         RoomDisposition.STABLE,
         EventFormatVersions.V1,
         StateResolutionVersions.V2,
+        enforce_key_validity=False,
     )
     V3 = RoomVersion(
         "3",
         RoomDisposition.STABLE,
         EventFormatVersions.V2,
         StateResolutionVersions.V2,
+        enforce_key_validity=False,
+    )
+    V4 = RoomVersion(
+        "4",
+        RoomDisposition.STABLE,
+        EventFormatVersions.V3,
+        StateResolutionVersions.V2,
+        enforce_key_validity=False,
+    )
+    V5 = RoomVersion(
+        "5",
+        RoomDisposition.STABLE,
+        EventFormatVersions.V3,
+        StateResolutionVersions.V2,
+        enforce_key_validity=True,
     )
-
-
-# the version we will give rooms which are created on this server
-DEFAULT_ROOM_VERSION = RoomVersions.V1
 
 
 KNOWN_ROOM_VERSIONS = {
@@ -86,6 +96,7 @@ KNOWN_ROOM_VERSIONS = {
         RoomVersions.V1,
         RoomVersions.V2,
         RoomVersions.V3,
-        RoomVersions.STATE_V2_TEST,
+        RoomVersions.V4,
+        RoomVersions.V5,
     )
 }   # type: dict[str, RoomVersion]
diff --git a/synapse/api/urls.py b/synapse/api/urls.py
index 8102176653..e16c386a14 100644
--- a/synapse/api/urls.py
+++ b/synapse/api/urls.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,11 +22,11 @@ from six.moves.urllib.parse import urlencode
 
 from synapse.config import ConfigError
 
-CLIENT_PREFIX = "/_matrix/client/api/v1"
-CLIENT_V2_ALPHA_PREFIX = "/_matrix/client/v2_alpha"
+CLIENT_API_PREFIX = "/_matrix/client"
 FEDERATION_PREFIX = "/_matrix/federation"
 FEDERATION_V1_PREFIX = FEDERATION_PREFIX + "/v1"
 FEDERATION_V2_PREFIX = FEDERATION_PREFIX + "/v2"
+FEDERATION_UNSTABLE_PREFIX = FEDERATION_PREFIX + "/unstable"
 STATIC_PREFIX = "/_matrix/static"
 WEB_CLIENT_PREFIX = "/_matrix/client"
 CONTENT_REPO_PREFIX = "/_matrix/content"
diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index d4c6c4c8e2..8cc990399f 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -22,13 +22,14 @@ import traceback
 import psutil
 from daemonize import Daemonize
 
-from twisted.internet import error, reactor
+from twisted.internet import defer, error, reactor
 from twisted.protocols.tls import TLSMemoryBIOFactory
 
 import synapse
 from synapse.app import check_bind_error
 from synapse.crypto import context_factory
 from synapse.util import PreserveLoggingContext
+from synapse.util.async_helpers import Linearizer
 from synapse.util.rlimit import change_resource_limit
 from synapse.util.versionstring import get_version_string
 
@@ -99,6 +100,8 @@ def start_reactor(
         logger (logging.Logger): logger instance to pass to Daemonize
     """
 
+    install_dns_limiter(reactor)
+
     def run():
         # make sure that we run the reactor with the sentinel log context,
         # otherwise other PreserveLoggingContext instances will get confused
@@ -312,3 +315,87 @@ def setup_sentry(hs):
         name = hs.config.worker_name if hs.config.worker_name else "master"
         scope.set_tag("worker_app", app)
         scope.set_tag("worker_name", name)
+
+
+def install_dns_limiter(reactor, max_dns_requests_in_flight=100):
+    """Replaces the resolver with one that limits the number of in flight DNS
+    requests.
+
+    This is to workaround https://twistedmatrix.com/trac/ticket/9620, where we
+    can run out of file descriptors and infinite loop if we attempt to do too
+    many DNS queries at once
+    """
+    new_resolver = _LimitedHostnameResolver(
+        reactor.nameResolver, max_dns_requests_in_flight,
+    )
+
+    reactor.installNameResolver(new_resolver)
+
+
+class _LimitedHostnameResolver(object):
+    """Wraps a IHostnameResolver, limiting the number of in-flight DNS lookups.
+    """
+
+    def __init__(self, resolver, max_dns_requests_in_flight):
+        self._resolver = resolver
+        self._limiter = Linearizer(
+            name="dns_client_limiter", max_count=max_dns_requests_in_flight,
+        )
+
+    def resolveHostName(self, resolutionReceiver, hostName, portNumber=0,
+                        addressTypes=None, transportSemantics='TCP'):
+        # We need this function to return `resolutionReceiver` so we do all the
+        # actual logic involving deferreds in a separate function.
+
+        # even though this is happening within the depths of twisted, we need to drop
+        # our logcontext before starting _resolve, otherwise: (a) _resolve will drop
+        # the logcontext if it returns an incomplete deferred; (b) _resolve will
+        # call the resolutionReceiver *with* a logcontext, which it won't be expecting.
+        with PreserveLoggingContext():
+            self._resolve(
+                resolutionReceiver,
+                hostName,
+                portNumber,
+                addressTypes,
+                transportSemantics,
+            )
+
+        return resolutionReceiver
+
+    @defer.inlineCallbacks
+    def _resolve(self, resolutionReceiver, hostName, portNumber=0,
+                 addressTypes=None, transportSemantics='TCP'):
+
+        with (yield self._limiter.queue(())):
+            # resolveHostName doesn't return a Deferred, so we need to hook into
+            # the receiver interface to get told when resolution has finished.
+
+            deferred = defer.Deferred()
+            receiver = _DeferredResolutionReceiver(resolutionReceiver, deferred)
+
+            self._resolver.resolveHostName(
+                receiver, hostName, portNumber,
+                addressTypes, transportSemantics,
+            )
+
+            yield deferred
+
+
+class _DeferredResolutionReceiver(object):
+    """Wraps a IResolutionReceiver and simply resolves the given deferred when
+    resolution is complete
+    """
+
+    def __init__(self, receiver, deferred):
+        self._receiver = receiver
+        self._deferred = deferred
+
+    def resolutionBegan(self, resolutionInProgress):
+        self._receiver.resolutionBegan(resolutionInProgress)
+
+    def addressResolved(self, address):
+        self._receiver.addressResolved(address)
+
+    def resolutionComplete(self):
+        self._deferred.callback(())
+        self._receiver.resolutionComplete()
diff --git a/synapse/app/client_reader.py b/synapse/app/client_reader.py
index beaea64a61..a16e037f32 100644
--- a/synapse/app/client_reader.py
+++ b/synapse/app/client_reader.py
@@ -38,6 +38,7 @@ from synapse.replication.slave.storage.devices import SlavedDeviceStore
 from synapse.replication.slave.storage.directory import DirectoryStore
 from synapse.replication.slave.storage.events import SlavedEventStore
 from synapse.replication.slave.storage.keys import SlavedKeyStore
+from synapse.replication.slave.storage.profile import SlavedProfileStore
 from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
 from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
 from synapse.replication.slave.storage.registration import SlavedRegistrationStore
@@ -45,6 +46,7 @@ from synapse.replication.slave.storage.room import RoomStore
 from synapse.replication.slave.storage.transactions import SlavedTransactionStore
 from synapse.replication.tcp.client import ReplicationClientHandler
 from synapse.rest.client.v1.login import LoginRestServlet
+from synapse.rest.client.v1.push_rule import PushRuleRestServlet
 from synapse.rest.client.v1.room import (
     JoinedRoomMemberListRestServlet,
     PublicRoomListRestServlet,
@@ -52,9 +54,11 @@ from synapse.rest.client.v1.room import (
     RoomMemberListRestServlet,
     RoomStateRestServlet,
 )
+from synapse.rest.client.v1.voip import VoipRestServlet
 from synapse.rest.client.v2_alpha.account import ThreepidRestServlet
 from synapse.rest.client.v2_alpha.keys import KeyChangesServlet, KeyQueryServlet
 from synapse.rest.client.v2_alpha.register import RegisterRestServlet
+from synapse.rest.client.versions import VersionsRestServlet
 from synapse.server import HomeServer
 from synapse.storage.engines import create_engine
 from synapse.util.httpresourcetree import create_resource_tree
@@ -78,6 +82,7 @@ class ClientReaderSlavedStore(
     SlavedApplicationServiceStore,
     SlavedRegistrationStore,
     SlavedTransactionStore,
+    SlavedProfileStore,
     SlavedClientIpStore,
     BaseSlavedStore,
 ):
@@ -109,12 +114,12 @@ class ClientReaderServer(HomeServer):
                     ThreepidRestServlet(self).register(resource)
                     KeyQueryServlet(self).register(resource)
                     KeyChangesServlet(self).register(resource)
+                    VoipRestServlet(self).register(resource)
+                    PushRuleRestServlet(self).register(resource)
+                    VersionsRestServlet().register(resource)
 
                     resources.update({
-                        "/_matrix/client/r0": resource,
-                        "/_matrix/client/unstable": resource,
-                        "/_matrix/client/v2_alpha": resource,
-                        "/_matrix/client/api/v1": resource,
+                        "/_matrix/client": resource,
                     })
 
         root_resource = create_resource_tree(resources, NoResource())
diff --git a/synapse/app/frontend_proxy.py b/synapse/app/frontend_proxy.py
index 8479fee738..6504da5278 100644
--- a/synapse/app/frontend_proxy.py
+++ b/synapse/app/frontend_proxy.py
@@ -37,8 +37,7 @@ from synapse.replication.slave.storage.client_ips import SlavedClientIpStore
 from synapse.replication.slave.storage.devices import SlavedDeviceStore
 from synapse.replication.slave.storage.registration import SlavedRegistrationStore
 from synapse.replication.tcp.client import ReplicationClientHandler
-from synapse.rest.client.v1.base import ClientV1RestServlet, client_path_patterns
-from synapse.rest.client.v2_alpha._base import client_v2_patterns
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.server import HomeServer
 from synapse.storage.engines import create_engine
 from synapse.util.httpresourcetree import create_resource_tree
@@ -49,11 +48,11 @@ from synapse.util.versionstring import get_version_string
 logger = logging.getLogger("synapse.app.frontend_proxy")
 
 
-class PresenceStatusStubServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/presence/(?P<user_id>[^/]*)/status")
+class PresenceStatusStubServlet(RestServlet):
+    PATTERNS = client_patterns("/presence/(?P<user_id>[^/]*)/status")
 
     def __init__(self, hs):
-        super(PresenceStatusStubServlet, self).__init__(hs)
+        super(PresenceStatusStubServlet, self).__init__()
         self.http_client = hs.get_simple_http_client()
         self.auth = hs.get_auth()
         self.main_uri = hs.config.worker_main_http_uri
@@ -84,7 +83,7 @@ class PresenceStatusStubServlet(ClientV1RestServlet):
 
 
 class KeyUploadServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/keys/upload(/(?P<device_id>[^/]+))?$")
+    PATTERNS = client_patterns("/keys/upload(/(?P<device_id>[^/]+))?$")
 
     def __init__(self, hs):
         """
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 869c028d1f..b27b12e73d 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -62,6 +62,7 @@ from synapse.python_dependencies import check_requirements
 from synapse.replication.http import REPLICATION_PREFIX, ReplicationRestResource
 from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory
 from synapse.rest import ClientRestResource
+from synapse.rest.admin import AdminRestResource
 from synapse.rest.key.v2 import KeyApiV2Resource
 from synapse.rest.media.v0.content_repository import ContentRepoResource
 from synapse.rest.well_known import WellKnownResource
@@ -180,6 +181,7 @@ class SynapseHomeServer(HomeServer):
                 "/_matrix/client/v2_alpha": client_resource,
                 "/_matrix/client/versions": client_resource,
                 "/.well-known/matrix/client": WellKnownResource(self),
+                "/_synapse/admin": AdminRestResource(self),
             })
 
             if self.get_config().saml2_enabled:
@@ -518,6 +520,7 @@ def run(hs):
             uptime = 0
 
         stats["homeserver"] = hs.config.server_name
+        stats["server_context"] = hs.config.server_context
         stats["timestamp"] = now
         stats["uptime_seconds"] = uptime
         version = sys.version_info
@@ -537,6 +540,7 @@ def run(hs):
         stats["total_room_count"] = room_count
 
         stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
+        stats["monthly_active_users"] = yield hs.get_datastore().count_monthly_users()
         stats["daily_active_rooms"] = yield hs.get_datastore().count_daily_active_rooms()
         stats["daily_messages"] = yield hs.get_datastore().count_daily_messages()
 
@@ -558,7 +562,6 @@ def run(hs):
 
         stats["database_engine"] = hs.get_datastore().database_engine_name
         stats["database_server_version"] = hs.get_datastore().get_server_version()
-
         logger.info("Reporting stats to matrix.org: %s" % (stats,))
         try:
             yield hs.get_simple_http_client().put_json(
diff --git a/synapse/config/emailconfig.py b/synapse/config/emailconfig.py
index 93d70cff14..86018dfcce 100644
--- a/synapse/config/emailconfig.py
+++ b/synapse/config/emailconfig.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-# Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2015-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,24 +19,87 @@ from __future__ import print_function
 
 # This file can't be called email.py because if it is, we cannot:
 import email.utils
-import logging
 import os
 
 import pkg_resources
 
 from ._base import Config, ConfigError
 
-logger = logging.getLogger(__name__)
-
 
 class EmailConfig(Config):
     def read_config(self, config):
+        # TODO: We should separate better the email configuration from the notification
+        # and account validity config.
+
         self.email_enable_notifs = False
 
         email_config = config.get("email", {})
-        self.email_enable_notifs = email_config.get("enable_notifs", False)
 
-        if self.email_enable_notifs:
+        self.email_smtp_host = email_config.get("smtp_host", None)
+        self.email_smtp_port = email_config.get("smtp_port", None)
+        self.email_smtp_user = email_config.get("smtp_user", None)
+        self.email_smtp_pass = email_config.get("smtp_pass", None)
+        self.require_transport_security = email_config.get(
+            "require_transport_security", False
+        )
+        if "app_name" in email_config:
+            self.email_app_name = email_config["app_name"]
+        else:
+            self.email_app_name = "Matrix"
+
+        # TODO: Rename notif_from to something more generic, or have a separate
+        # from for password resets, message notifications, etc?
+        # Currently the email section is a bit bogged down with settings for
+        # multiple functions. Would be good to split it out into separate
+        # sections and only put the common ones under email:
+        self.email_notif_from = email_config.get("notif_from", None)
+        if self.email_notif_from is not None:
+            # make sure it's valid
+            parsed = email.utils.parseaddr(self.email_notif_from)
+            if parsed[1] == '':
+                raise RuntimeError("Invalid notif_from address")
+
+        template_dir = email_config.get("template_dir")
+        # we need an absolute path, because we change directory after starting (and
+        # we don't yet know what auxilliary templates like mail.css we will need).
+        # (Note that loading as package_resources with jinja.PackageLoader doesn't
+        # work for the same reason.)
+        if not template_dir:
+            template_dir = pkg_resources.resource_filename(
+                'synapse', 'res/templates'
+            )
+
+        self.email_template_dir = os.path.abspath(template_dir)
+
+        self.email_enable_notifs = email_config.get("enable_notifs", False)
+        account_validity_renewal_enabled = config.get(
+            "account_validity", {},
+        ).get("renew_at")
+
+        email_trust_identity_server_for_password_resets = email_config.get(
+            "trust_identity_server_for_password_resets", False,
+        )
+        self.email_password_reset_behaviour = (
+            "remote" if email_trust_identity_server_for_password_resets else "local"
+        )
+        self.password_resets_were_disabled_due_to_email_config = False
+        if self.email_password_reset_behaviour == "local" and email_config == {}:
+            # We cannot warn the user this has happened here
+            # Instead do so when a user attempts to reset their password
+            self.password_resets_were_disabled_due_to_email_config = True
+
+            self.email_password_reset_behaviour = "off"
+
+        # Get lifetime of a validation token in milliseconds
+        self.email_validation_token_lifetime = self.parse_duration(
+            email_config.get("validation_token_lifetime", "1h")
+        )
+
+        if (
+            self.email_enable_notifs
+            or account_validity_renewal_enabled
+            or self.email_password_reset_behaviour == "local"
+        ):
             # make sure we can import the required deps
             import jinja2
             import bleach
@@ -42,6 +107,68 @@ class EmailConfig(Config):
             jinja2
             bleach
 
+        if self.email_password_reset_behaviour == "local":
+            required = [
+                "smtp_host",
+                "smtp_port",
+                "notif_from",
+            ]
+
+            missing = []
+            for k in required:
+                if k not in email_config:
+                    missing.append(k)
+
+            if (len(missing) > 0):
+                raise RuntimeError(
+                    "email.password_reset_behaviour is set to 'local' "
+                    "but required keys are missing: %s" %
+                    (", ".join(["email." + k for k in missing]),)
+                )
+
+            # Templates for password reset emails
+            self.email_password_reset_template_html = email_config.get(
+                "password_reset_template_html", "password_reset.html",
+            )
+            self.email_password_reset_template_text = email_config.get(
+                "password_reset_template_text", "password_reset.txt",
+            )
+            self.email_password_reset_failure_template = email_config.get(
+                "password_reset_failure_template", "password_reset_failure.html",
+            )
+            # This template does not support any replaceable variables, so we will
+            # read it from the disk once during setup
+            email_password_reset_success_template = email_config.get(
+                "password_reset_success_template", "password_reset_success.html",
+            )
+
+            # Check templates exist
+            for f in [self.email_password_reset_template_html,
+                      self.email_password_reset_template_text,
+                      self.email_password_reset_failure_template,
+                      email_password_reset_success_template]:
+                p = os.path.join(self.email_template_dir, f)
+                if not os.path.isfile(p):
+                    raise ConfigError("Unable to find template file %s" % (p, ))
+
+            # Retrieve content of web templates
+            filepath = os.path.join(
+                self.email_template_dir,
+                email_password_reset_success_template,
+            )
+            self.email_password_reset_success_html_content = self.read_file(
+                filepath,
+                "email.password_reset_template_success_html",
+            )
+
+            if config.get("public_baseurl") is None:
+                raise RuntimeError(
+                    "email.password_reset_behaviour is set to 'local' but no "
+                    "public_baseurl is set. This is necessary to generate password "
+                    "reset links"
+                )
+
+        if self.email_enable_notifs:
             required = [
                 "smtp_host",
                 "smtp_port",
@@ -66,28 +193,13 @@ class EmailConfig(Config):
                     "email.enable_notifs is True but no public_baseurl is set"
                 )
 
-            self.email_smtp_host = email_config["smtp_host"]
-            self.email_smtp_port = email_config["smtp_port"]
-            self.email_notif_from = email_config["notif_from"]
             self.email_notif_template_html = email_config["notif_template_html"]
             self.email_notif_template_text = email_config["notif_template_text"]
 
-            template_dir = email_config.get("template_dir")
-            # we need an absolute path, because we change directory after starting (and
-            # we don't yet know what auxilliary templates like mail.css we will need).
-            # (Note that loading as package_resources with jinja.PackageLoader doesn't
-            # work for the same reason.)
-            if not template_dir:
-                template_dir = pkg_resources.resource_filename(
-                    'synapse', 'res/templates'
-                )
-            template_dir = os.path.abspath(template_dir)
-
             for f in self.email_notif_template_text, self.email_notif_template_html:
-                p = os.path.join(template_dir, f)
+                p = os.path.join(self.email_template_dir, f)
                 if not os.path.isfile(p):
                     raise ConfigError("Unable to find email template file %s" % (p, ))
-            self.email_template_dir = template_dir
 
             self.email_notif_for_new_users = email_config.get(
                 "notif_for_new_users", True
@@ -95,35 +207,24 @@ class EmailConfig(Config):
             self.email_riot_base_url = email_config.get(
                 "riot_base_url", None
             )
-            self.email_smtp_user = email_config.get(
-                "smtp_user", None
-            )
-            self.email_smtp_pass = email_config.get(
-                "smtp_pass", None
-            )
-            self.require_transport_security = email_config.get(
-                "require_transport_security", False
-            )
-            if "app_name" in email_config:
-                self.email_app_name = email_config["app_name"]
-            else:
-                self.email_app_name = "Matrix"
 
-            # make sure it's valid
-            parsed = email.utils.parseaddr(self.email_notif_from)
-            if parsed[1] == '':
-                raise RuntimeError("Invalid notif_from address")
-        else:
-            self.email_enable_notifs = False
-            # Not much point setting defaults for the rest: it would be an
-            # error for them to be used.
+        if account_validity_renewal_enabled:
+            self.email_expiry_template_html = email_config.get(
+                "expiry_template_html", "notice_expiry.html",
+            )
+            self.email_expiry_template_text = email_config.get(
+                "expiry_template_text", "notice_expiry.txt",
+            )
+
+            for f in self.email_expiry_template_text, self.email_expiry_template_html:
+                p = os.path.join(self.email_template_dir, f)
+                if not os.path.isfile(p):
+                    raise ConfigError("Unable to find email template file %s" % (p, ))
 
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
-        # Enable sending emails for notification events
-        # Defining a custom URL for Riot is only needed if email notifications
-        # should contain links to a self-hosted installation of Riot; when set
-        # the "app_name" setting is ignored.
+        # Enable sending emails for password resets, notification events or
+        # account expiry notices
         #
         # If your SMTP server requires authentication, the optional smtp_user &
         # smtp_pass variables should be used
@@ -131,17 +232,62 @@ class EmailConfig(Config):
         #email:
         #   enable_notifs: false
         #   smtp_host: "localhost"
-        #   smtp_port: 25
+        #   smtp_port: 25 # SSL: 465, STARTTLS: 587
         #   smtp_user: "exampleusername"
         #   smtp_pass: "examplepassword"
         #   require_transport_security: False
         #   notif_from: "Your Friendly %(app)s Home Server <noreply@example.com>"
         #   app_name: Matrix
-        #   # if template_dir is unset, uses the example templates that are part of
-        #   # the Synapse distribution.
+        #
+        #   # Enable email notifications by default
+        #   notif_for_new_users: True
+        #
+        #   # Defining a custom URL for Riot is only needed if email notifications
+        #   # should contain links to a self-hosted installation of Riot; when set
+        #   # the "app_name" setting is ignored
+        #   riot_base_url: "http://localhost/riot"
+        #
+        #   # Enable sending password reset emails via the configured, trusted
+        #   # identity servers
+        #   #
+        #   # IMPORTANT! This will give a malicious or overtaken identity server
+        #   # the ability to reset passwords for your users! Make absolutely sure
+        #   # that you want to do this! It is strongly recommended that password
+        #   # reset emails be sent by the homeserver instead
+        #   #
+        #   # If this option is set to false and SMTP options have not been
+        #   # configured, resetting user passwords via email will be disabled
+        #   #trust_identity_server_for_password_resets: false
+        #
+        #   # Configure the time that a validation email or text message code
+        #   # will expire after sending
+        #   #
+        #   # This is currently used for password resets
+        #   #validation_token_lifetime: 1h
+        #
+        #   # Template directory. All template files should be stored within this
+        #   # directory
+        #   #
         #   #template_dir: res/templates
+        #
+        #   # Templates for email notifications
+        #   #
         #   notif_template_html: notif_mail.html
         #   notif_template_text: notif_mail.txt
-        #   notif_for_new_users: True
-        #   riot_base_url: "http://localhost/riot"
+        #
+        #   # Templates for account expiry notices
+        #   #
+        #   expiry_template_html: notice_expiry.html
+        #   expiry_template_text: notice_expiry.txt
+        #
+        #   # Templates for password reset emails sent by the homeserver
+        #   #
+        #   #password_reset_template_html: password_reset.html
+        #   #password_reset_template_text: password_reset.txt
+        #
+        #   # Templates for password reset success and failure pages that a user
+        #   # will see after attempting to reset their password
+        #   #
+        #   #password_reset_template_success_html: password_reset_success.html
+        #   #password_reset_template_failure_html: password_reset_failure.html
         """
diff --git a/synapse/config/homeserver.py b/synapse/config/homeserver.py
index 727fdc54d8..acadef4fd3 100644
--- a/synapse/config/homeserver.py
+++ b/synapse/config/homeserver.py
@@ -13,6 +13,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 from .api import ApiConfig
 from .appservice import AppServiceConfig
 from .captcha import CaptchaConfig
@@ -36,20 +37,43 @@ from .saml2_config import SAML2Config
 from .server import ServerConfig
 from .server_notices_config import ServerNoticesConfig
 from .spam_checker import SpamCheckerConfig
+from .stats import StatsConfig
+from .third_party_event_rules import ThirdPartyRulesConfig
 from .tls import TlsConfig
 from .user_directory import UserDirectoryConfig
 from .voip import VoipConfig
 from .workers import WorkerConfig
 
 
-class HomeServerConfig(ServerConfig, TlsConfig, DatabaseConfig, LoggingConfig,
-                       RatelimitConfig, ContentRepositoryConfig, CaptchaConfig,
-                       VoipConfig, RegistrationConfig, MetricsConfig, ApiConfig,
-                       AppServiceConfig, KeyConfig, SAML2Config, CasConfig,
-                       JWTConfig, PasswordConfig, EmailConfig,
-                       WorkerConfig, PasswordAuthProviderConfig, PushConfig,
-                       SpamCheckerConfig, GroupsConfig, UserDirectoryConfig,
-                       ConsentConfig,
-                       ServerNoticesConfig, RoomDirectoryConfig,
-                       ):
+class HomeServerConfig(
+    ServerConfig,
+    TlsConfig,
+    DatabaseConfig,
+    LoggingConfig,
+    RatelimitConfig,
+    ContentRepositoryConfig,
+    CaptchaConfig,
+    VoipConfig,
+    RegistrationConfig,
+    MetricsConfig,
+    ApiConfig,
+    AppServiceConfig,
+    KeyConfig,
+    SAML2Config,
+    CasConfig,
+    JWTConfig,
+    PasswordConfig,
+    EmailConfig,
+    WorkerConfig,
+    PasswordAuthProviderConfig,
+    PushConfig,
+    SpamCheckerConfig,
+    GroupsConfig,
+    UserDirectoryConfig,
+    ConsentConfig,
+    StatsConfig,
+    ServerNoticesConfig,
+    RoomDirectoryConfig,
+    ThirdPartyRulesConfig,
+):
     pass
diff --git a/synapse/config/key.py b/synapse/config/key.py
index eb10259818..424875feae 100644
--- a/synapse/config/key.py
+++ b/synapse/config/key.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,6 +18,8 @@ import hashlib
 import logging
 import os
 
+import attr
+import jsonschema
 from signedjson.key import (
     NACL_ED25519,
     decode_signing_key_base64,
@@ -32,11 +35,36 @@ from synapse.util.stringutils import random_string, random_string_with_symbols
 
 from ._base import Config, ConfigError
 
+INSECURE_NOTARY_ERROR = """\
+Your server is configured to accept key server responses without signature
+validation or TLS certificate validation. This is likely to be very insecure. If
+you are *sure* you want to do this, set 'accept_keys_insecurely' on the
+keyserver configuration."""
+
+RELYING_ON_MATRIX_KEY_ERROR = """\
+Your server is configured to accept key server responses without TLS certificate
+validation, and which are only signed by the old (possibly compromised)
+matrix.org signing key 'ed25519:auto'. This likely isn't what you want to do,
+and you should enable 'federation_verify_certificates' in your configuration.
+
+If you are *sure* you want to do this, set 'accept_keys_insecurely' on the
+trusted_key_server configuration."""
+
+
 logger = logging.getLogger(__name__)
 
 
-class KeyConfig(Config):
+@attr.s
+class TrustedKeyServer(object):
+    # string: name of the server.
+    server_name = attr.ib()
 
+    # dict[str,VerifyKey]|None: map from key id to key object, or None to disable
+    # signature verification.
+    verify_keys = attr.ib(default=None)
+
+
+class KeyConfig(Config):
     def read_config(self, config):
         # the signing key can be specified inline or in a separate file
         if "signing_key" in config:
@@ -49,16 +77,27 @@ class KeyConfig(Config):
             config.get("old_signing_keys", {})
         )
         self.key_refresh_interval = self.parse_duration(
-            config.get("key_refresh_interval", "1d"),
+            config.get("key_refresh_interval", "1d")
         )
-        self.perspectives = self.read_perspectives(
-            config.get("perspectives", {}).get("servers", {
-                "matrix.org": {"verify_keys": {
-                    "ed25519:auto": {
-                        "key": "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw",
-                    }
-                }}
-            })
+
+        # if neither trusted_key_servers nor perspectives are given, use the default.
+        if "perspectives" not in config and "trusted_key_servers" not in config:
+            key_servers = [{"server_name": "matrix.org"}]
+        else:
+            key_servers = config.get("trusted_key_servers", [])
+
+            if not isinstance(key_servers, list):
+                raise ConfigError(
+                    "trusted_key_servers, if given, must be a list, not a %s"
+                    % (type(key_servers).__name__,)
+                )
+
+            # merge the 'perspectives' config into the 'trusted_key_servers' config.
+            key_servers.extend(_perspectives_to_key_servers(config))
+
+        # list of TrustedKeyServer objects
+        self.key_servers = list(
+            _parse_key_servers(key_servers, self.federation_verify_certificates)
         )
 
         self.macaroon_secret_key = config.get(
@@ -78,8 +117,9 @@ class KeyConfig(Config):
         # falsification of values
         self.form_secret = config.get("form_secret", None)
 
-    def default_config(self, config_dir_path, server_name, generate_secrets=False,
-                       **kwargs):
+    def default_config(
+        self, config_dir_path, server_name, generate_secrets=False, **kwargs
+    ):
         base_key_name = os.path.join(config_dir_path, server_name)
 
         if generate_secrets:
@@ -91,7 +131,8 @@ class KeyConfig(Config):
             macaroon_secret_key = "# macaroon_secret_key: <PRIVATE STRING>"
             form_secret = "# form_secret: <PRIVATE STRING>"
 
-        return """\
+        return (
+            """\
         # a secret which is used to sign access tokens. If none is specified,
         # the registration_shared_secret is used, if one is given; otherwise,
         # a secret key is derived from the signing key.
@@ -133,33 +174,53 @@ class KeyConfig(Config):
 
         # The trusted servers to download signing keys from.
         #
-        #perspectives:
-        #  servers:
-        #    "matrix.org":
-        #      verify_keys:
-        #        "ed25519:auto":
-        #          key: "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
-        """ % locals()
-
-    def read_perspectives(self, perspectives_servers):
-        servers = {}
-        for server_name, server_config in perspectives_servers.items():
-            for key_id, key_data in server_config["verify_keys"].items():
-                if is_signing_algorithm_supported(key_id):
-                    key_base64 = key_data["key"]
-                    key_bytes = decode_base64(key_base64)
-                    verify_key = decode_verify_key_bytes(key_id, key_bytes)
-                    servers.setdefault(server_name, {})[key_id] = verify_key
-        return servers
+        # When we need to fetch a signing key, each server is tried in parallel.
+        #
+        # Normally, the connection to the key server is validated via TLS certificates.
+        # Additional security can be provided by configuring a `verify key`, which
+        # will make synapse check that the response is signed by that key.
+        #
+        # This setting supercedes an older setting named `perspectives`. The old format
+        # is still supported for backwards-compatibility, but it is deprecated.
+        #
+        # Options for each entry in the list include:
+        #
+        #    server_name: the name of the server. required.
+        #
+        #    verify_keys: an optional map from key id to base64-encoded public key.
+        #       If specified, we will check that the response is signed by at least
+        #       one of the given keys.
+        #
+        #    accept_keys_insecurely: a boolean. Normally, if `verify_keys` is unset,
+        #       and federation_verify_certificates is not `true`, synapse will refuse
+        #       to start, because this would allow anyone who can spoof DNS responses
+        #       to masquerade as the trusted key server. If you know what you are doing
+        #       and are sure that your network environment provides a secure connection
+        #       to the key server, you can set this to `true` to override this
+        #       behaviour.
+        #
+        # An example configuration might look like:
+        #
+        #trusted_key_servers:
+        #  - server_name: "my_trusted_server.example.com"
+        #    verify_keys:
+        #      "ed25519:auto": "abcdefghijklmnopqrstuvwxyzabcdefghijklmopqr"
+        #  - server_name: "my_other_trusted_server.example.com"
+        #
+        # The default configuration is:
+        #
+        #trusted_key_servers:
+        #  - server_name: "matrix.org"
+        """
+            % locals()
+        )
 
     def read_signing_key(self, signing_key_path):
         signing_keys = self.read_file(signing_key_path, "signing_key")
         try:
             return read_signing_keys(signing_keys.splitlines(True))
         except Exception as e:
-            raise ConfigError(
-                "Error reading signing_key: %s" % (str(e))
-            )
+            raise ConfigError("Error reading signing_key: %s" % (str(e)))
 
     def read_old_signing_keys(self, old_signing_keys):
         keys = {}
@@ -182,9 +243,7 @@ class KeyConfig(Config):
         if not self.path_exists(signing_key_path):
             with open(signing_key_path, "w") as signing_key_file:
                 key_id = "a_" + random_string(4)
-                write_signing_keys(
-                    signing_key_file, (generate_signing_key(key_id),),
-                )
+                write_signing_keys(signing_key_file, (generate_signing_key(key_id),))
         else:
             signing_keys = self.read_file(signing_key_path, "signing_key")
             if len(signing_keys.split("\n")[0].split()) == 1:
@@ -194,6 +253,116 @@ class KeyConfig(Config):
                     NACL_ED25519, key_id, signing_keys.split("\n")[0]
                 )
                 with open(signing_key_path, "w") as signing_key_file:
-                    write_signing_keys(
-                        signing_key_file, (key,),
+                    write_signing_keys(signing_key_file, (key,))
+
+
+def _perspectives_to_key_servers(config):
+    """Convert old-style 'perspectives' configs into new-style 'trusted_key_servers'
+
+    Returns an iterable of entries to add to trusted_key_servers.
+    """
+
+    # 'perspectives' looks like:
+    #
+    # {
+    #     "servers": {
+    #         "matrix.org": {
+    #             "verify_keys": {
+    #                 "ed25519:auto": {
+    #                     "key": "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
+    #                 }
+    #             }
+    #         }
+    #     }
+    # }
+    #
+    # 'trusted_keys' looks like:
+    #
+    # [
+    #     {
+    #         "server_name": "matrix.org",
+    #         "verify_keys": {
+    #             "ed25519:auto": "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw",
+    #         }
+    #     }
+    # ]
+
+    perspectives_servers = config.get("perspectives", {}).get("servers", {})
+
+    for server_name, server_opts in perspectives_servers.items():
+        trusted_key_server_entry = {"server_name": server_name}
+        verify_keys = server_opts.get("verify_keys")
+        if verify_keys is not None:
+            trusted_key_server_entry["verify_keys"] = {
+                key_id: key_data["key"] for key_id, key_data in verify_keys.items()
+            }
+        yield trusted_key_server_entry
+
+
+TRUSTED_KEY_SERVERS_SCHEMA = {
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "description": "schema for the trusted_key_servers setting",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "server_name": {"type": "string"},
+            "verify_keys": {
+                "type": "object",
+                # each key must be a base64 string
+                "additionalProperties": {"type": "string"},
+            },
+        },
+        "required": ["server_name"],
+    },
+}
+
+
+def _parse_key_servers(key_servers, federation_verify_certificates):
+    try:
+        jsonschema.validate(key_servers, TRUSTED_KEY_SERVERS_SCHEMA)
+    except jsonschema.ValidationError as e:
+        raise ConfigError("Unable to parse 'trusted_key_servers': " + e.message)
+
+    for server in key_servers:
+        server_name = server["server_name"]
+        result = TrustedKeyServer(server_name=server_name)
+
+        verify_keys = server.get("verify_keys")
+        if verify_keys is not None:
+            result.verify_keys = {}
+            for key_id, key_base64 in verify_keys.items():
+                if not is_signing_algorithm_supported(key_id):
+                    raise ConfigError(
+                        "Unsupported signing algorithm on key %s for server %s in "
+                        "trusted_key_servers" % (key_id, server_name)
                     )
+                try:
+                    key_bytes = decode_base64(key_base64)
+                    verify_key = decode_verify_key_bytes(key_id, key_bytes)
+                except Exception as e:
+                    raise ConfigError(
+                        "Unable to parse key %s for server %s in "
+                        "trusted_key_servers: %s" % (key_id, server_name, e)
+                    )
+
+                result.verify_keys[key_id] = verify_key
+
+        if (
+            not federation_verify_certificates and
+            not server.get("accept_keys_insecurely")
+        ):
+            _assert_keyserver_has_verify_keys(result)
+
+        yield result
+
+
+def _assert_keyserver_has_verify_keys(trusted_key_server):
+    if not trusted_key_server.verify_keys:
+        raise ConfigError(INSECURE_NOTARY_ERROR)
+
+    # also check that they are not blindly checking the old matrix.org key
+    if trusted_key_server.server_name == "matrix.org" and any(
+        key_id == "ed25519:auto" for key_id in trusted_key_server.verify_keys
+    ):
+        raise ConfigError(RELYING_ON_MATRIX_KEY_ERROR)
diff --git a/synapse/config/ratelimiting.py b/synapse/config/ratelimiting.py
index 5a68399e63..5a9adac480 100644
--- a/synapse/config/ratelimiting.py
+++ b/synapse/config/ratelimiting.py
@@ -16,16 +16,56 @@ from ._base import Config
 
 
 class RateLimitConfig(object):
-    def __init__(self, config):
-        self.per_second = config.get("per_second", 0.17)
-        self.burst_count = config.get("burst_count", 3.0)
+    def __init__(self, config, defaults={"per_second": 0.17, "burst_count": 3.0}):
+        self.per_second = config.get("per_second", defaults["per_second"])
+        self.burst_count = config.get("burst_count", defaults["burst_count"])
+
+
+class FederationRateLimitConfig(object):
+    _items_and_default = {
+        "window_size": 10000,
+        "sleep_limit": 10,
+        "sleep_delay": 500,
+        "reject_limit": 50,
+        "concurrent": 3,
+    }
+
+    def __init__(self, **kwargs):
+        for i in self._items_and_default.keys():
+            setattr(self, i, kwargs.get(i) or self._items_and_default[i])
 
 
 class RatelimitConfig(Config):
-
     def read_config(self, config):
-        self.rc_messages_per_second = config.get("rc_messages_per_second", 0.2)
-        self.rc_message_burst_count = config.get("rc_message_burst_count", 10.0)
+
+        # Load the new-style messages config if it exists. Otherwise fall back
+        # to the old method.
+        if "rc_message" in config:
+            self.rc_message = RateLimitConfig(
+                config["rc_message"], defaults={"per_second": 0.2, "burst_count": 10.0}
+            )
+        else:
+            self.rc_message = RateLimitConfig(
+                {
+                    "per_second": config.get("rc_messages_per_second", 0.2),
+                    "burst_count": config.get("rc_message_burst_count", 10.0),
+                }
+            )
+
+        # Load the new-style federation config, if it exists. Otherwise, fall
+        # back to the old method.
+        if "federation_rc" in config:
+            self.rc_federation = FederationRateLimitConfig(**config["rc_federation"])
+        else:
+            self.rc_federation = FederationRateLimitConfig(
+                **{
+                    "window_size": config.get("federation_rc_window_size"),
+                    "sleep_limit": config.get("federation_rc_sleep_limit"),
+                    "sleep_delay": config.get("federation_rc_sleep_delay"),
+                    "reject_limit": config.get("federation_rc_reject_limit"),
+                    "concurrent": config.get("federation_rc_concurrent"),
+                }
+            )
 
         self.rc_registration = RateLimitConfig(config.get("rc_registration", {}))
 
@@ -33,38 +73,26 @@ class RatelimitConfig(Config):
         self.rc_login_address = RateLimitConfig(rc_login_config.get("address", {}))
         self.rc_login_account = RateLimitConfig(rc_login_config.get("account", {}))
         self.rc_login_failed_attempts = RateLimitConfig(
-            rc_login_config.get("failed_attempts", {}),
+            rc_login_config.get("failed_attempts", {})
         )
 
-        self.federation_rc_window_size = config.get("federation_rc_window_size", 1000)
-        self.federation_rc_sleep_limit = config.get("federation_rc_sleep_limit", 10)
-        self.federation_rc_sleep_delay = config.get("federation_rc_sleep_delay", 500)
-        self.federation_rc_reject_limit = config.get("federation_rc_reject_limit", 50)
-        self.federation_rc_concurrent = config.get("federation_rc_concurrent", 3)
-
         self.federation_rr_transactions_per_room_per_second = config.get(
-            "federation_rr_transactions_per_room_per_second", 50,
+            "federation_rr_transactions_per_room_per_second", 50
         )
 
     def default_config(self, **kwargs):
         return """\
         ## Ratelimiting ##
 
-        # Number of messages a client can send per second
-        #
-        #rc_messages_per_second: 0.2
-
-        # Number of message a client can send before being throttled
-        #
-        #rc_message_burst_count: 10.0
-
-        # Ratelimiting settings for registration and login.
+        # Ratelimiting settings for client actions (registration, login, messaging).
         #
         # Each ratelimiting configuration is made of two parameters:
         #   - per_second: number of requests a client can send per second.
         #   - burst_count: number of requests a client can send before being throttled.
         #
         # Synapse currently uses the following configurations:
+        #   - one for messages that ratelimits sending based on the account the client
+        #     is using
         #   - one for registration that ratelimits registration requests based on the
         #     client's IP address.
         #   - one for login that ratelimits login requests based on the client's IP
@@ -77,6 +105,10 @@ class RatelimitConfig(Config):
         #
         # The defaults are as shown below.
         #
+        #rc_message:
+        #  per_second: 0.2
+        #  burst_count: 10
+        #
         #rc_registration:
         #  per_second: 0.17
         #  burst_count: 3
@@ -92,29 +124,28 @@ class RatelimitConfig(Config):
         #    per_second: 0.17
         #    burst_count: 3
 
-        # The federation window size in milliseconds
-        #
-        #federation_rc_window_size: 1000
 
-        # The number of federation requests from a single server in a window
-        # before the server will delay processing the request.
+        # Ratelimiting settings for incoming federation
         #
-        #federation_rc_sleep_limit: 10
-
-        # The duration in milliseconds to delay processing events from
-        # remote servers by if they go over the sleep limit.
+        # The rc_federation configuration is made up of the following settings:
+        #   - window_size: window size in milliseconds
+        #   - sleep_limit: number of federation requests from a single server in
+        #     a window before the server will delay processing the request.
+        #   - sleep_delay: duration in milliseconds to delay processing events
+        #     from remote servers by if they go over the sleep limit.
+        #   - reject_limit: maximum number of concurrent federation requests
+        #     allowed from a single server
+        #   - concurrent: number of federation requests to concurrently process
+        #     from a single server
         #
-        #federation_rc_sleep_delay: 500
-
-        # The maximum number of concurrent federation requests allowed
-        # from a single server
+        # The defaults are as shown below.
         #
-        #federation_rc_reject_limit: 50
-
-        # The number of federation requests to concurrently process from a
-        # single server
-        #
-        #federation_rc_concurrent: 3
+        #rc_federation:
+        #  window_size: 1000
+        #  sleep_limit: 10
+        #  sleep_delay: 500
+        #  reject_limit: 50
+        #  concurrent: 3
 
         # Target outgoing federation transaction frequency for sending read-receipts,
         # per-room.
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index fcfda341e9..aad3400819 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -20,6 +20,31 @@ from synapse.types import RoomAlias
 from synapse.util.stringutils import random_string_with_symbols
 
 
+class AccountValidityConfig(Config):
+    def __init__(self, config, synapse_config):
+        self.enabled = config.get("enabled", False)
+        self.renew_by_email_enabled = ("renew_at" in config)
+
+        if self.enabled:
+            if "period" in config:
+                self.period = self.parse_duration(config["period"])
+            else:
+                raise ConfigError("'period' is required when using account validity")
+
+            if "renew_at" in config:
+                self.renew_at = self.parse_duration(config["renew_at"])
+
+            if "renew_email_subject" in config:
+                self.renew_email_subject = config["renew_email_subject"]
+            else:
+                self.renew_email_subject = "Renew your %(app)s account"
+
+            self.startup_job_max_delta = self.period * 10. / 100.
+
+        if self.renew_by_email_enabled and "public_baseurl" not in synapse_config:
+            raise ConfigError("Can't send renewal emails without 'public_baseurl'")
+
+
 class RegistrationConfig(Config):
 
     def read_config(self, config):
@@ -31,6 +56,10 @@ class RegistrationConfig(Config):
                 strtobool(str(config["disable_registration"]))
             )
 
+        self.account_validity = AccountValidityConfig(
+            config.get("account_validity", {}), config,
+        )
+
         self.registrations_require_3pid = config.get("registrations_require_3pid", [])
         self.allowed_local_3pids = config.get("allowed_local_3pids", [])
         self.enable_3pid_lookup = config.get("enable_3pid_lookup", True)
@@ -76,6 +105,42 @@ class RegistrationConfig(Config):
         #
         #enable_registration: false
 
+        # Optional account validity configuration. This allows for accounts to be denied
+        # any request after a given period.
+        #
+        # ``enabled`` defines whether the account validity feature is enabled. Defaults
+        # to False.
+        #
+        # ``period`` allows setting the period after which an account is valid
+        # after its registration. When renewing the account, its validity period
+        # will be extended by this amount of time. This parameter is required when using
+        # the account validity feature.
+        #
+        # ``renew_at`` is the amount of time before an account's expiry date at which
+        # Synapse will send an email to the account's email address with a renewal link.
+        # This needs the ``email`` and ``public_baseurl`` configuration sections to be
+        # filled.
+        #
+        # ``renew_email_subject`` is the subject of the email sent out with the renewal
+        # link. ``%%(app)s`` can be used as a placeholder for the ``app_name`` parameter
+        # from the ``email`` section.
+        #
+        # Once this feature is enabled, Synapse will look for registered users without an
+        # expiration date at startup and will add one to every account it found using the
+        # current settings at that time.
+        # This means that, if a validity period is set, and Synapse is restarted (it will
+        # then derive an expiration date from the current validity period), and some time
+        # after that the validity period changes and Synapse is restarted, the users'
+        # expiration dates won't be updated unless their account is manually renewed. This
+        # date will be randomly selected within a range [now + period - d ; now + period],
+        # where d is equal to 10%% of the validity period.
+        #
+        #account_validity:
+        #  enabled: True
+        #  period: 6w
+        #  renew_at: 1w
+        #  renew_email_subject: "Renew your %%(app)s account"
+
         # The user must provide all of the below types of 3PID when registering.
         #
         #registrations_require_3pid:
diff --git a/synapse/config/repository.py b/synapse/config/repository.py
index 3f34ad9b2a..fbfcecc240 100644
--- a/synapse/config/repository.py
+++ b/synapse/config/repository.py
@@ -186,17 +186,21 @@ class ContentRepositoryConfig(Config):
             except ImportError:
                 raise ConfigError(MISSING_NETADDR)
 
-            if "url_preview_ip_range_blacklist" in config:
-                self.url_preview_ip_range_blacklist = IPSet(
-                    config["url_preview_ip_range_blacklist"]
-                )
-            else:
+            if "url_preview_ip_range_blacklist" not in config:
                 raise ConfigError(
                     "For security, you must specify an explicit target IP address "
                     "blacklist in url_preview_ip_range_blacklist for url previewing "
                     "to work"
                 )
 
+            self.url_preview_ip_range_blacklist = IPSet(
+                config["url_preview_ip_range_blacklist"]
+            )
+
+            # we always blacklist '0.0.0.0' and '::', which are supposed to be
+            # unroutable addresses.
+            self.url_preview_ip_range_blacklist.update(['0.0.0.0', '::'])
+
             self.url_preview_ip_range_whitelist = IPSet(
                 config.get("url_preview_ip_range_whitelist", ())
             )
@@ -260,11 +264,12 @@ class ContentRepositoryConfig(Config):
         #thumbnail_sizes:
 %(formatted_thumbnail_sizes)s
 
-        # Is the preview URL API enabled?  If enabled, you *must* specify
-        # an explicit url_preview_ip_range_blacklist of IPs that the spider is
-        # denied from accessing.
+        # Is the preview URL API enabled?
         #
-        #url_preview_enabled: false
+        # 'false' by default: uncomment the following to enable it (and specify a
+        # url_preview_ip_range_blacklist blacklist).
+        #
+        #url_preview_enabled: true
 
         # List of IP address CIDR ranges that the URL preview spider is denied
         # from accessing.  There are no defaults: you must explicitly
@@ -274,6 +279,12 @@ class ContentRepositoryConfig(Config):
         # synapse to issue arbitrary GET requests to your internal services,
         # causing serious security issues.
         #
+        # (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+        # listed here, since they correspond to unroutable addresses.)
+        #
+        # This must be specified if url_preview_enabled is set. It is recommended that
+        # you uncomment the following list as a starting point.
+        #
         #url_preview_ip_range_blacklist:
         #  - '127.0.0.0/8'
         #  - '10.0.0.0/8'
@@ -284,7 +295,7 @@ class ContentRepositoryConfig(Config):
         #  - '::1/128'
         #  - 'fe80::/64'
         #  - 'fc00::/7'
-        #
+
         # List of IP address CIDR ranges that the URL preview spider is allowed
         # to access even if they are specified in url_preview_ip_range_blacklist.
         # This is useful for specifying exceptions to wide-ranging blacklisted
diff --git a/synapse/config/saml2_config.py b/synapse/config/saml2_config.py
index 39b9eb29c2..aa6eac271f 100644
--- a/synapse/config/saml2_config.py
+++ b/synapse/config/saml2_config.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 08e4e45482..7d56e2d141 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,6 +18,9 @@
 import logging
 import os.path
 
+from netaddr import IPSet
+
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.http.endpoint import parse_and_validate_server_name
 from synapse.python_dependencies import DependencyException, check_requirements
 
@@ -32,11 +36,14 @@ logger = logging.Logger(__name__)
 # in the list.
 DEFAULT_BIND_ADDRESSES = ['::', '0.0.0.0']
 
+DEFAULT_ROOM_VERSION = "4"
+
 
 class ServerConfig(Config):
 
     def read_config(self, config):
         self.server_name = config["server_name"]
+        self.server_context = config.get("server_context", None)
 
         try:
             parse_and_validate_server_name(self.server_name)
@@ -71,6 +78,35 @@ class ServerConfig(Config):
         # master, potentially causing inconsistency.
         self.enable_media_repo = config.get("enable_media_repo", True)
 
+        # Whether to require authentication to retrieve profile data (avatars,
+        # display names) of other users through the client API.
+        self.require_auth_for_profile_requests = config.get(
+            "require_auth_for_profile_requests", False,
+        )
+
+        # If set to 'True', requires authentication to access the server's
+        # public rooms directory through the client API, and forbids any other
+        # homeserver to fetch it via federation.
+        self.restrict_public_rooms_to_local_users = config.get(
+            "restrict_public_rooms_to_local_users", False,
+        )
+
+        default_room_version = config.get(
+            "default_room_version", DEFAULT_ROOM_VERSION,
+        )
+
+        # Ensure room version is a str
+        default_room_version = str(default_room_version)
+
+        if default_room_version not in KNOWN_ROOM_VERSIONS:
+            raise ConfigError(
+                "Unknown default_room_version: %s, known room versions: %s" %
+                (default_room_version, list(KNOWN_ROOM_VERSIONS.keys()))
+            )
+
+        # Get the actual room version object rather than just the identifier
+        self.default_room_version = KNOWN_ROOM_VERSIONS[default_room_version]
+
         # whether to enable search. If disabled, new entries will not be inserted
         # into the search tables and they will not be indexed. Users will receive
         # errors when attempting to search for messages.
@@ -84,6 +120,11 @@ class ServerConfig(Config):
             "block_non_admin_invites", False,
         )
 
+        # Whether to enable experimental MSC1849 (aka relations) support
+        self.experimental_msc1849_support_enabled = config.get(
+            "experimental_msc1849_support_enabled", False,
+        )
+
         # Options to control access by tracking MAU
         self.limit_usage_by_mau = config.get("limit_usage_by_mau", False)
         self.max_mau_value = 0
@@ -113,14 +154,34 @@ class ServerConfig(Config):
         # FIXME: federation_domain_whitelist needs sytests
         self.federation_domain_whitelist = None
         federation_domain_whitelist = config.get(
-            "federation_domain_whitelist", None
+            "federation_domain_whitelist", None,
         )
-        # turn the whitelist into a hash for speed of lookup
+
         if federation_domain_whitelist is not None:
+            # turn the whitelist into a hash for speed of lookup
             self.federation_domain_whitelist = {}
+
             for domain in federation_domain_whitelist:
                 self.federation_domain_whitelist[domain] = True
 
+        self.federation_ip_range_blacklist = config.get(
+            "federation_ip_range_blacklist", [],
+        )
+
+        # Attempt to create an IPSet from the given ranges
+        try:
+            self.federation_ip_range_blacklist = IPSet(
+                self.federation_ip_range_blacklist
+            )
+
+            # Always blacklist 0.0.0.0, ::
+            self.federation_ip_range_blacklist.update(["0.0.0.0", "::"])
+        except Exception as e:
+            raise ConfigError(
+                "Invalid range(s) provided in "
+                "federation_ip_range_blacklist: %s" % e
+            )
+
         if self.public_baseurl is not None:
             if self.public_baseurl[-1] != '/':
                 self.public_baseurl += '/'
@@ -131,6 +192,16 @@ class ServerConfig(Config):
         # sending out any replication updates.
         self.replication_torture_level = config.get("replication_torture_level")
 
+        # Whether to require a user to be in the room to add an alias to it.
+        # Defaults to True.
+        self.require_membership_for_aliases = config.get(
+            "require_membership_for_aliases", True,
+        )
+
+        # Whether to allow per-room membership profiles through the send of membership
+        # events with profile information that differ from the target's global profile.
+        self.allow_per_room_profiles = config.get("allow_per_room_profiles", True)
+
         self.listeners = []
         for listener in config.get("listeners", []):
             if not isinstance(listener.get("port", None), int):
@@ -258,6 +329,10 @@ class ServerConfig(Config):
             unsecure_port = 8008
 
         pid_file = os.path.join(data_dir_path, "homeserver.pid")
+
+        # Bring DEFAULT_ROOM_VERSION into the local-scope for use in the
+        # default config string
+        default_room_version = DEFAULT_ROOM_VERSION
         return """\
         ## Server ##
 
@@ -318,6 +393,30 @@ class ServerConfig(Config):
         #
         #use_presence: false
 
+        # Whether to require authentication to retrieve profile data (avatars,
+        # display names) of other users through the client API. Defaults to
+        # 'false'. Note that profile data is also available via the federation
+        # API, so this setting is of limited value if federation is enabled on
+        # the server.
+        #
+        #require_auth_for_profile_requests: true
+
+        # If set to 'true', requires authentication to access the server's
+        # public rooms directory through the client API, and forbids any other
+        # homeserver to fetch it via federation. Defaults to 'false'.
+        #
+        #restrict_public_rooms_to_local_users: true
+
+        # The default room version for newly created rooms.
+        #
+        # Known room versions are listed here:
+        # https://matrix.org/docs/spec/#complete-list-of-room-versions
+        #
+        # For example, for room version 1, default_room_version should be set
+        # to "1".
+        #
+        #default_room_version: "%(default_room_version)s"
+
         # The GC threshold parameters to pass to `gc.set_threshold`, if defined
         #
         #gc_thresholds: [700, 10, 10]
@@ -350,6 +449,24 @@ class ServerConfig(Config):
         #  - nyc.example.com
         #  - syd.example.com
 
+        # Prevent federation requests from being sent to the following
+        # blacklist IP address CIDR ranges. If this option is not specified, or
+        # specified with an empty list, no ip range blacklist will be enforced.
+        #
+        # (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+        # listed here, since they correspond to unroutable addresses.)
+        #
+        federation_ip_range_blacklist:
+          - '127.0.0.0/8'
+          - '10.0.0.0/8'
+          - '172.16.0.0/12'
+          - '192.168.0.0/16'
+          - '100.64.0.0/10'
+          - '169.254.0.0/16'
+          - '::1/128'
+          - 'fe80::/64'
+          - 'fc00::/7'
+
         # List of ports that Synapse should listen on, their purpose and their
         # configuration.
         #
@@ -385,8 +502,8 @@ class ServerConfig(Config):
         #
         # Valid resource names are:
         #
-        #   client: the client-server API (/_matrix/client). Also implies 'media' and
-        #       'static'.
+        #   client: the client-server API (/_matrix/client), and the synapse admin
+        #       API (/_synapse/admin). Also implies 'media' and 'static'.
         #
         #   consent: user consent forms (/_matrix/consent). See
         #       docs/consent_tracking.md.
@@ -468,6 +585,22 @@ class ServerConfig(Config):
 
         # Monthly Active User Blocking
         #
+        # Used in cases where the admin or server owner wants to limit to the
+        # number of monthly active users.
+        #
+        # 'limit_usage_by_mau' disables/enables monthly active user blocking. When
+        # anabled and a limit is reached the server returns a 'ResourceLimitError'
+        # with error type Codes.RESOURCE_LIMIT_EXCEEDED
+        #
+        # 'max_mau_value' is the hard limit of monthly active users above which
+        # the server will start blocking user actions.
+        #
+        # 'mau_trial_days' is a means to add a grace period for active users. It
+        # means that users must be active for this number of days before they
+        # can be considered active and guards against the case where lots of users
+        # sign up in a short space of time never to return after their initial
+        # session.
+        #
         #limit_usage_by_mau: False
         #max_mau_value: 50
         #mau_trial_days: 2
@@ -484,6 +617,20 @@ class ServerConfig(Config):
         #mau_limit_reserved_threepids:
         #  - medium: 'email'
         #    address: 'reserved_user@example.com'
+
+        # Used by phonehome stats to group together related servers.
+        #server_context: context
+
+        # Whether to require a user to be in the room to add an alias to it.
+        # Defaults to 'true'.
+        #
+        #require_membership_for_aliases: false
+
+        # Whether to allow per-room membership profiles through the send of membership
+        # events with profile information that differ from the target's global profile.
+        # Defaults to 'true'.
+        #
+        #allow_per_room_profiles: false
         """ % locals()
 
     def read_arguments(self, args):
diff --git a/synapse/config/stats.py b/synapse/config/stats.py
new file mode 100644
index 0000000000..80fc1b9dd0
--- /dev/null
+++ b/synapse/config/stats.py
@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import division
+
+import sys
+
+from ._base import Config
+
+
+class StatsConfig(Config):
+    """Stats Configuration
+    Configuration for the behaviour of synapse's stats engine
+    """
+
+    def read_config(self, config):
+        self.stats_enabled = True
+        self.stats_bucket_size = 86400
+        self.stats_retention = sys.maxsize
+        stats_config = config.get("stats", None)
+        if stats_config:
+            self.stats_enabled = stats_config.get("enabled", self.stats_enabled)
+            self.stats_bucket_size = (
+                self.parse_duration(stats_config.get("bucket_size", "1d")) / 1000
+            )
+            self.stats_retention = (
+                self.parse_duration(
+                    stats_config.get("retention", "%ds" % (sys.maxsize,))
+                )
+                / 1000
+            )
+
+    def default_config(self, config_dir_path, server_name, **kwargs):
+        return """
+        # Local statistics collection. Used in populating the room directory.
+        #
+        # 'bucket_size' controls how large each statistics timeslice is. It can
+        # be defined in a human readable short form -- e.g. "1d", "1y".
+        #
+        # 'retention' controls how long historical statistics will be kept for.
+        # It can be defined in a human readable short form -- e.g. "1d", "1y".
+        #
+        #
+        #stats:
+        #   enabled: true
+        #   bucket_size: 1d
+        #   retention: 1y
+        """
diff --git a/synapse/config/third_party_event_rules.py b/synapse/config/third_party_event_rules.py
new file mode 100644
index 0000000000..a89dd5f98a
--- /dev/null
+++ b/synapse/config/third_party_event_rules.py
@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from synapse.util.module_loader import load_module
+
+from ._base import Config
+
+
+class ThirdPartyRulesConfig(Config):
+    def read_config(self, config):
+        self.third_party_event_rules = None
+
+        provider = config.get("third_party_event_rules", None)
+        if provider is not None:
+            self.third_party_event_rules = load_module(provider)
+
+    def default_config(self, **kwargs):
+        return """\
+        # Server admins can define a Python module that implements extra rules for
+        # allowing or denying incoming events. In order to work, this module needs to
+        # override the methods defined in synapse/events/third_party_rules.py.
+        #
+        # This feature is designed to be used in closed federations only, where each
+        # participating server enforces the same rules.
+        #
+        #third_party_event_rules:
+        #  module: "my_custom_project.SuperRulesSet"
+        #  config:
+        #    example_option: 'things'
+        """
diff --git a/synapse/config/tls.py b/synapse/config/tls.py
index f0014902da..658f9dd361 100644
--- a/synapse/config/tls.py
+++ b/synapse/config/tls.py
@@ -24,8 +24,10 @@ import six
 from unpaddedbase64 import encode_base64
 
 from OpenSSL import crypto
+from twisted.internet._sslverify import Certificate, trustRootFromCertificates
 
 from synapse.config._base import Config, ConfigError
+from synapse.util import glob_to_regex
 
 logger = logging.getLogger(__name__)
 
@@ -70,6 +72,53 @@ class TlsConfig(Config):
 
         self.tls_fingerprints = list(self._original_tls_fingerprints)
 
+        # Whether to verify certificates on outbound federation traffic
+        self.federation_verify_certificates = config.get(
+            "federation_verify_certificates", True,
+        )
+
+        # Whitelist of domains to not verify certificates for
+        fed_whitelist_entries = config.get(
+            "federation_certificate_verification_whitelist", [],
+        )
+
+        # Support globs (*) in whitelist values
+        self.federation_certificate_verification_whitelist = []
+        for entry in fed_whitelist_entries:
+            # Convert globs to regex
+            entry_regex = glob_to_regex(entry)
+            self.federation_certificate_verification_whitelist.append(entry_regex)
+
+        # List of custom certificate authorities for federation traffic validation
+        custom_ca_list = config.get(
+            "federation_custom_ca_list", None,
+        )
+
+        # Read in and parse custom CA certificates
+        self.federation_ca_trust_root = None
+        if custom_ca_list is not None:
+            if len(custom_ca_list) == 0:
+                # A trustroot cannot be generated without any CA certificates.
+                # Raise an error if this option has been specified without any
+                # corresponding certificates.
+                raise ConfigError("federation_custom_ca_list specified without "
+                                  "any certificate files")
+
+            certs = []
+            for ca_file in custom_ca_list:
+                logger.debug("Reading custom CA certificate file: %s", ca_file)
+                content = self.read_file(ca_file, "federation_custom_ca_list")
+
+                # Parse the CA certificates
+                try:
+                    cert_base = Certificate.loadPEM(content)
+                    certs.append(cert_base)
+                except Exception as e:
+                    raise ConfigError("Error parsing custom CA certificate file %s: %s"
+                                      % (ca_file, e))
+
+            self.federation_ca_trust_root = trustRootFromCertificates(certs)
+
         # This config option applies to non-federation HTTP clients
         # (e.g. for talking to recaptcha, identity servers, and such)
         # It should never be used in production, and is intended for
@@ -99,15 +148,15 @@ class TlsConfig(Config):
         try:
             with open(self.tls_certificate_file, 'rb') as f:
                 cert_pem = f.read()
-        except Exception:
-            logger.exception("Failed to read existing certificate off disk!")
-            raise
+        except Exception as e:
+            raise ConfigError("Failed to read existing certificate file %s: %s"
+                              % (self.tls_certificate_file, e))
 
         try:
             tls_certificate = crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)
-        except Exception:
-            logger.exception("Failed to parse existing certificate off disk!")
-            raise
+        except Exception as e:
+            raise ConfigError("Failed to parse existing certificate file %s: %s"
+                              % (self.tls_certificate_file, e))
 
         if not allow_self_signed:
             if tls_certificate.get_subject() == tls_certificate.get_issuer():
@@ -192,6 +241,40 @@ class TlsConfig(Config):
         #
         #tls_private_key_path: "%(tls_private_key_path)s"
 
+        # Whether to verify TLS server certificates for outbound federation requests.
+        #
+        # Defaults to `true`. To disable certificate verification, uncomment the
+        # following line.
+        #
+        #federation_verify_certificates: false
+
+        # Skip federation certificate verification on the following whitelist
+        # of domains.
+        #
+        # This setting should only be used in very specific cases, such as
+        # federation over Tor hidden services and similar. For private networks
+        # of homeservers, you likely want to use a private CA instead.
+        #
+        # Only effective if federation_verify_certicates is `true`.
+        #
+        #federation_certificate_verification_whitelist:
+        #  - lon.example.com
+        #  - *.domain.com
+        #  - *.onion
+
+        # List of custom certificate authorities for federation traffic.
+        #
+        # This setting should only normally be used within a private network of
+        # homeservers.
+        #
+        # Note that this list will replace those that are provided by your
+        # operating environment. Certificates must be in PEM format.
+        #
+        #federation_custom_ca_list:
+        #  - myCA1.pem
+        #  - myCA2.pem
+        #  - myCA3.pem
+
         # ACME support: This will configure Synapse to request a valid TLS certificate
         # for your configured `server_name` via Let's Encrypt.
         #
diff --git a/synapse/config/user_directory.py b/synapse/config/user_directory.py
index 142754a7dc..023997ccde 100644
--- a/synapse/config/user_directory.py
+++ b/synapse/config/user_directory.py
@@ -43,9 +43,9 @@ class UserDirectoryConfig(Config):
         #
         # 'search_all_users' defines whether to search all users visible to your HS
         # when searching the user directory, rather than limiting to users visible
-        # in public rooms.  Defaults to false.  If you set it True, you'll have to run
-        # UPDATE user_directory_stream_pos SET stream_id = NULL;
-        # on your database to tell it to rebuild the user_directory search indexes.
+        # in public rooms.  Defaults to false.  If you set it True, you'll have to
+        # rebuild the user_directory search indexes, see
+        # https://github.com/matrix-org/synapse/blob/master/docs/user_directory.md
         #
         #user_directory:
         #  enabled: true
diff --git a/synapse/crypto/context_factory.py b/synapse/crypto/context_factory.py
index 49cbc7098f..2bc5cc3807 100644
--- a/synapse/crypto/context_factory.py
+++ b/synapse/crypto/context_factory.py
@@ -15,13 +15,16 @@
 
 import logging
 
+import idna
+from service_identity import VerificationError
+from service_identity.pyopenssl import verify_hostname, verify_ip_address
 from zope.interface import implementer
 
 from OpenSSL import SSL, crypto
 from twisted.internet._sslverify import _defaultCurveName
 from twisted.internet.abstract import isIPAddress, isIPv6Address
 from twisted.internet.interfaces import IOpenSSLClientConnectionCreator
-from twisted.internet.ssl import CertificateOptions, ContextFactory
+from twisted.internet.ssl import CertificateOptions, ContextFactory, platformTrust
 from twisted.python.failure import Failure
 
 logger = logging.getLogger(__name__)
@@ -56,80 +59,130 @@ class ServerContextFactory(ContextFactory):
         return self._context
 
 
-def _idnaBytes(text):
-    """
-    Convert some text typed by a human into some ASCII bytes. This is a
-    copy of twisted.internet._idna._idnaBytes. For documentation, see the
-    twisted documentation.
-    """
-    try:
-        import idna
-    except ImportError:
-        return text.encode("idna")
-    else:
-        return idna.encode(text)
+class ClientTLSOptionsFactory(object):
+    """Factory for Twisted SSLClientConnectionCreators that are used to make connections
+    to remote servers for federation.
 
+    Uses one of two OpenSSL context objects for all connections, depending on whether
+    we should do SSL certificate verification.
 
-def _tolerateErrors(wrapped):
-    """
-    Wrap up an info_callback for pyOpenSSL so that if something goes wrong
-    the error is immediately logged and the connection is dropped if possible.
-    This is a copy of twisted.internet._sslverify._tolerateErrors. For
-    documentation, see the twisted documentation.
+    get_options decides whether we should do SSL certificate verification and
+    constructs an SSLClientConnectionCreator factory accordingly.
     """
 
-    def infoCallback(connection, where, ret):
+    def __init__(self, config):
+        self._config = config
+
+        # Check if we're using a custom list of a CA certificates
+        trust_root = config.federation_ca_trust_root
+        if trust_root is None:
+            # Use CA root certs provided by OpenSSL
+            trust_root = platformTrust()
+
+        self._verify_ssl_context = CertificateOptions(trustRoot=trust_root).getContext()
+        self._verify_ssl_context.set_info_callback(self._context_info_cb)
+
+        self._no_verify_ssl_context = CertificateOptions().getContext()
+        self._no_verify_ssl_context.set_info_callback(self._context_info_cb)
+
+    def get_options(self, host):
+        # Check if certificate verification has been enabled
+        should_verify = self._config.federation_verify_certificates
+
+        # Check if we've disabled certificate verification for this host
+        if should_verify:
+            for regex in self._config.federation_certificate_verification_whitelist:
+                if regex.match(host):
+                    should_verify = False
+                    break
+
+        ssl_context = (
+            self._verify_ssl_context if should_verify else self._no_verify_ssl_context
+        )
+
+        return SSLClientConnectionCreator(host, ssl_context, should_verify)
+
+    @staticmethod
+    def _context_info_cb(ssl_connection, where, ret):
+        """The 'information callback' for our openssl context object."""
+        # we assume that the app_data on the connection object has been set to
+        # a TLSMemoryBIOProtocol object. (This is done by SSLClientConnectionCreator)
+        tls_protocol = ssl_connection.get_app_data()
         try:
-            return wrapped(connection, where, ret)
+            # ... we further assume that SSLClientConnectionCreator has set the
+            # '_synapse_tls_verifier' attribute to a ConnectionVerifier object.
+            tls_protocol._synapse_tls_verifier.verify_context_info_cb(
+                ssl_connection, where
+            )
         except:  # noqa: E722, taken from the twisted implementation
-            f = Failure()
             logger.exception("Error during info_callback")
-            connection.get_app_data().failVerification(f)
-
-    return infoCallback
+            f = Failure()
+            tls_protocol.failVerification(f)
 
 
 @implementer(IOpenSSLClientConnectionCreator)
-class ClientTLSOptions(object):
-    """
-    Client creator for TLS without certificate identity verification. This is a
-    copy of twisted.internet._sslverify.ClientTLSOptions with the identity
-    verification left out. For documentation, see the twisted documentation.
+class SSLClientConnectionCreator(object):
+    """Creates openssl connection objects for client connections.
+
+    Replaces twisted.internet.ssl.ClientTLSOptions
     """
 
-    def __init__(self, hostname, ctx):
+    def __init__(self, hostname, ctx, verify_certs):
         self._ctx = ctx
+        self._verifier = ConnectionVerifier(hostname, verify_certs)
 
-        if isIPAddress(hostname) or isIPv6Address(hostname):
-            self._hostnameBytes = hostname.encode('ascii')
-            self._sendSNI = False
-        else:
-            self._hostnameBytes = _idnaBytes(hostname)
-            self._sendSNI = True
-
-        ctx.set_info_callback(_tolerateErrors(self._identityVerifyingInfoCallback))
-
-    def clientConnectionForTLS(self, tlsProtocol):
+    def clientConnectionForTLS(self, tls_protocol):
         context = self._ctx
         connection = SSL.Connection(context, None)
-        connection.set_app_data(tlsProtocol)
+
+        # as per twisted.internet.ssl.ClientTLSOptions, we set the application
+        # data to our TLSMemoryBIOProtocol...
+        connection.set_app_data(tls_protocol)
+
+        # ... and we also gut-wrench a '_synapse_tls_verifier' attribute into the
+        # tls_protocol so that the SSL context's info callback has something to
+        # call to do the cert verification.
+        setattr(tls_protocol, "_synapse_tls_verifier", self._verifier)
         return connection
 
-    def _identityVerifyingInfoCallback(self, connection, where, ret):
-        # Literal IPv4 and IPv6 addresses are not permitted
-        # as host names according to the RFCs
-        if where & SSL.SSL_CB_HANDSHAKE_START and self._sendSNI:
-            connection.set_tlsext_host_name(self._hostnameBytes)
 
+class ConnectionVerifier(object):
+    """Set the SNI, and do cert verification
 
-class ClientTLSOptionsFactory(object):
-    """Factory for Twisted ClientTLSOptions that are used to make connections
-    to remote servers for federation."""
+    This is a thing which is attached to the TLSMemoryBIOProtocol, and is called by
+    the ssl context's info callback.
+    """
 
-    def __init__(self, config):
-        # We don't use config options yet
-        self._options = CertificateOptions(verify=False)
+    # This code is based on twisted.internet.ssl.ClientTLSOptions.
 
-    def get_options(self, host):
-        # Use _makeContext so that we get a fresh OpenSSL CTX each time.
-        return ClientTLSOptions(host, self._options._makeContext())
+    def __init__(self, hostname, verify_certs):
+        self._verify_certs = verify_certs
+
+        if isIPAddress(hostname) or isIPv6Address(hostname):
+            self._hostnameBytes = hostname.encode("ascii")
+            self._is_ip_address = True
+        else:
+            # twisted's ClientTLSOptions falls back to the stdlib impl here if
+            # idna is not installed, but points out that lacks support for
+            # IDNA2008 (http://bugs.python.org/issue17305).
+            #
+            # We can rely on having idna.
+            self._hostnameBytes = idna.encode(hostname)
+            self._is_ip_address = False
+
+        self._hostnameASCII = self._hostnameBytes.decode("ascii")
+
+    def verify_context_info_cb(self, ssl_connection, where):
+        if where & SSL.SSL_CB_HANDSHAKE_START and not self._is_ip_address:
+            ssl_connection.set_tlsext_host_name(self._hostnameBytes)
+
+        if where & SSL.SSL_CB_HANDSHAKE_DONE and self._verify_certs:
+            try:
+                if self._is_ip_address:
+                    verify_ip_address(ssl_connection, self._hostnameASCII)
+                else:
+                    verify_hostname(ssl_connection, self._hostnameASCII)
+            except VerificationError:
+                f = Failure()
+                tls_protocol = ssl_connection.get_app_data()
+                tls_protocol.failVerification(f)
diff --git a/synapse/crypto/event_signing.py b/synapse/crypto/event_signing.py
index 1dfa727fcf..99a586655b 100644
--- a/synapse/crypto/event_signing.py
+++ b/synapse/crypto/event_signing.py
@@ -31,7 +31,11 @@ logger = logging.getLogger(__name__)
 def check_event_content_hash(event, hash_algorithm=hashlib.sha256):
     """Check whether the hash for this PDU matches the contents"""
     name, expected_hash = compute_content_hash(event.get_pdu_json(), hash_algorithm)
-    logger.debug("Expecting hash: %s", encode_base64(expected_hash))
+    logger.debug(
+        "Verifying content hash on %s (expecting: %s)",
+        event.event_id,
+        encode_base64(expected_hash),
+    )
 
     # some malformed events lack a 'hashes'. Protect against it being missing
     # or a weird type by basically treating it the same as an unhashed event.
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py
index 0207cd989a..6f603f1961 100644
--- a/synapse/crypto/keyring.py
+++ b/synapse/crypto/keyring.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2017, 2018 New Vector Ltd.
+# Copyright 2017, 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,11 +15,13 @@
 # limitations under the License.
 
 import logging
-from collections import namedtuple
+from collections import defaultdict
 
+import six
 from six import raise_from
 from six.moves import urllib
 
+import attr
 from signedjson.key import (
     decode_verify_key_bytes,
     encode_verify_key_base64,
@@ -42,7 +44,9 @@ from synapse.api.errors import (
     RequestSendFailed,
     SynapseError,
 )
+from synapse.storage.keys import FetchKeyResult
 from synapse.util import logcontext, unwrapFirstError
+from synapse.util.async_helpers import yieldable_gather_results
 from synapse.util.logcontext import (
     LoggingContext,
     PreserveLoggingContext,
@@ -55,22 +59,40 @@ from synapse.util.retryutils import NotRetryingDestination
 logger = logging.getLogger(__name__)
 
 
-VerifyKeyRequest = namedtuple("VerifyRequest", (
-    "server_name", "key_ids", "json_object", "deferred"
-))
-"""
-A request for a verify key to verify a JSON object.
+@attr.s(slots=True, cmp=False)
+class VerifyJsonRequest(object):
+    """
+    A request to verify a JSON object.
 
-Attributes:
-    server_name(str): The name of the server to verify against.
-    key_ids(set(str)): The set of key_ids to that could be used to verify the
-        JSON object
-    json_object(dict): The JSON object to verify.
-    deferred(Deferred[str, str, nacl.signing.VerifyKey]):
-        A deferred (server_name, key_id, verify_key) tuple that resolves when
-        a verify key has been fetched. The deferreds' callbacks are run with no
-        logcontext.
-"""
+    Attributes:
+        server_name(str): The name of the server to verify against.
+
+        key_ids(set[str]): The set of key_ids to that could be used to verify the
+            JSON object
+
+        json_object(dict): The JSON object to verify.
+
+        minimum_valid_until_ts (int): time at which we require the signing key to
+            be valid. (0 implies we don't care)
+
+        key_ready (Deferred[str, str, nacl.signing.VerifyKey]):
+            A deferred (server_name, key_id, verify_key) tuple that resolves when
+            a verify key has been fetched. The deferreds' callbacks are run with no
+            logcontext.
+
+            If we are unable to find a key which satisfies the request, the deferred
+            errbacks with an M_UNAUTHORIZED SynapseError.
+    """
+
+    server_name = attr.ib()
+    json_object = attr.ib()
+    minimum_valid_until_ts = attr.ib()
+    request_name = attr.ib()
+    key_ids = attr.ib(init=False)
+    key_ready = attr.ib(default=attr.Factory(defer.Deferred))
+
+    def __attrs_post_init__(self):
+        self.key_ids = signature_ids(self.json_object, self.server_name)
 
 
 class KeyLookupError(ValueError):
@@ -78,13 +100,16 @@ class KeyLookupError(ValueError):
 
 
 class Keyring(object):
-    def __init__(self, hs):
-        self.store = hs.get_datastore()
+    def __init__(self, hs, key_fetchers=None):
         self.clock = hs.get_clock()
-        self.client = hs.get_http_client()
-        self.config = hs.get_config()
-        self.perspective_servers = self.config.perspectives
-        self.hs = hs
+
+        if key_fetchers is None:
+            key_fetchers = (
+                StoreKeyFetcher(hs),
+                PerspectivesKeyFetcher(hs),
+                ServerKeyFetcher(hs),
+            )
+        self._key_fetchers = key_fetchers
 
         # map from server name to Deferred. Has an entry for each server with
         # an ongoing key download; the Deferred completes once the download
@@ -93,68 +118,122 @@ class Keyring(object):
         # These are regular, logcontext-agnostic Deferreds.
         self.key_downloads = {}
 
-    def verify_json_for_server(self, server_name, json_object):
-        return logcontext.make_deferred_yieldable(
-            self.verify_json_objects_for_server(
-                [(server_name, json_object)]
-            )[0]
-        )
+    def verify_json_for_server(
+        self, server_name, json_object, validity_time, request_name
+    ):
+        """Verify that a JSON object has been signed by a given server
+
+        Args:
+            server_name (str): name of the server which must have signed this object
+
+            json_object (dict): object to be checked
+
+            validity_time (int): timestamp at which we require the signing key to
+                be valid. (0 implies we don't care)
+
+            request_name (str): an identifier for this json object (eg, an event id)
+                for logging.
+
+        Returns:
+            Deferred[None]: completes if the the object was correctly signed, otherwise
+                errbacks with an error
+        """
+        req = VerifyJsonRequest(server_name, json_object, validity_time, request_name)
+        requests = (req,)
+        return logcontext.make_deferred_yieldable(self._verify_objects(requests)[0])
 
     def verify_json_objects_for_server(self, server_and_json):
         """Bulk verifies signatures of json objects, bulk fetching keys as
         necessary.
 
         Args:
-            server_and_json (list): List of pairs of (server_name, json_object)
+            server_and_json (iterable[Tuple[str, dict, int, str]):
+                Iterable of (server_name, json_object, validity_time, request_name)
+                tuples.
+
+                validity_time is a timestamp at which the signing key must be
+                valid.
+
+                request_name is an identifier for this json object (eg, an event id)
+                for logging.
 
         Returns:
-            List<Deferred>: for each input pair, a deferred indicating success
+            List<Deferred[None]>: for each input triplet, a deferred indicating success
                 or failure to verify each json object's signature for the given
                 server_name. The deferreds run their callbacks in the sentinel
                 logcontext.
         """
-        verify_requests = []
+        return self._verify_objects(
+            VerifyJsonRequest(server_name, json_object, validity_time, request_name)
+            for server_name, json_object, validity_time, request_name in server_and_json
+        )
 
-        for server_name, json_object in server_and_json:
+    def _verify_objects(self, verify_requests):
+        """Does the work of verify_json_[objects_]for_server
 
-            key_ids = signature_ids(json_object, server_name)
-            if not key_ids:
-                logger.warn("Request from %s: no supported signature keys",
-                            server_name)
-                deferred = defer.fail(SynapseError(
-                    400,
-                    "Not signed with a supported algorithm",
-                    Codes.UNAUTHORIZED,
-                ))
-            else:
-                deferred = defer.Deferred()
 
-            logger.debug("Verifying for %s with key_ids %s",
-                         server_name, key_ids)
+        Args:
+            verify_requests (iterable[VerifyJsonRequest]):
+                Iterable of verification requests.
 
-            verify_request = VerifyKeyRequest(
-                server_name, key_ids, json_object, deferred
+        Returns:
+            List<Deferred[None]>: for each input item, a deferred indicating success
+                or failure to verify each json object's signature for the given
+                server_name. The deferreds run their callbacks in the sentinel
+                logcontext.
+        """
+        # a list of VerifyJsonRequests which are awaiting a key lookup
+        key_lookups = []
+        handle = preserve_fn(_handle_key_deferred)
+
+        def process(verify_request):
+            """Process an entry in the request list
+
+            Adds a key request to key_lookups, and returns a deferred which
+            will complete or fail (in the sentinel context) when verification completes.
+            """
+            if not verify_request.key_ids:
+                return defer.fail(
+                    SynapseError(
+                        400,
+                        "Not signed by %s" % (verify_request.server_name,),
+                        Codes.UNAUTHORIZED,
+                    )
+                )
+
+            logger.debug(
+                "Verifying %s for %s with key_ids %s, min_validity %i",
+                verify_request.request_name,
+                verify_request.server_name,
+                verify_request.key_ids,
+                verify_request.minimum_valid_until_ts,
             )
 
-            verify_requests.append(verify_request)
+            # add the key request to the queue, but don't start it off yet.
+            key_lookups.append(verify_request)
 
-        run_in_background(self._start_key_lookups, verify_requests)
+            # now run _handle_key_deferred, which will wait for the key request
+            # to complete and then do the verification.
+            #
+            # We want _handle_key_request to log to the right context, so we
+            # wrap it with preserve_fn (aka run_in_background)
+            return handle(verify_request)
 
-        # Pass those keys to handle_key_deferred so that the json object
-        # signatures can be verified
-        handle = preserve_fn(_handle_key_deferred)
-        return [
-            handle(rq) for rq in verify_requests
-        ]
+        results = [process(r) for r in verify_requests]
+
+        if key_lookups:
+            run_in_background(self._start_key_lookups, key_lookups)
+
+        return results
 
     @defer.inlineCallbacks
     def _start_key_lookups(self, verify_requests):
         """Sets off the key fetches for each verify request
 
-        Once each fetch completes, verify_request.deferred will be resolved.
+        Once each fetch completes, verify_request.key_ready will be resolved.
 
         Args:
-            verify_requests (List[VerifyKeyRequest]):
+            verify_requests (List[VerifyJsonRequest]):
         """
 
         try:
@@ -164,16 +243,12 @@ class Keyring(object):
             # any other lookups until we have finished.
             # The deferreds are called with no logcontext.
             server_to_deferred = {
-                rq.server_name: defer.Deferred()
-                for rq in verify_requests
+                rq.server_name: defer.Deferred() for rq in verify_requests
             }
 
             # We want to wait for any previous lookups to complete before
             # proceeding.
-            yield self.wait_for_previous_lookups(
-                [rq.server_name for rq in verify_requests],
-                server_to_deferred,
-            )
+            yield self.wait_for_previous_lookups(server_to_deferred)
 
             # Actually start fetching keys.
             self._get_server_verify_keys(verify_requests)
@@ -201,19 +276,16 @@ class Keyring(object):
                 return res
 
             for verify_request in verify_requests:
-                verify_request.deferred.addBoth(
-                    remove_deferreds, verify_request,
-                )
+                verify_request.key_ready.addBoth(remove_deferreds, verify_request)
         except Exception:
             logger.exception("Error starting key lookups")
 
     @defer.inlineCallbacks
-    def wait_for_previous_lookups(self, server_names, server_to_deferred):
+    def wait_for_previous_lookups(self, server_to_deferred):
         """Waits for any previous key lookups for the given servers to finish.
 
         Args:
-            server_names (list): list of server_names we want to lookup
-            server_to_deferred (dict): server_name to deferred which gets
+            server_to_deferred (dict[str, Deferred]): server_name to deferred which gets
                 resolved once we've finished looking up keys for that server.
                 The Deferreds should be regular twisted ones which call their
                 callbacks with no logcontext.
@@ -226,14 +298,15 @@ class Keyring(object):
         while True:
             wait_on = [
                 (server_name, self.key_downloads[server_name])
-                for server_name in server_names
+                for server_name in server_to_deferred.keys()
                 if server_name in self.key_downloads
             ]
             if not wait_on:
                 break
             logger.info(
                 "Waiting for existing lookups for %s to complete [loop %i]",
-                [w[0] for w in wait_on], loop_count,
+                [w[0] for w in wait_on],
+                loop_count,
             )
             with PreserveLoggingContext():
                 yield defer.DeferredList((w[1] for w in wait_on))
@@ -256,144 +329,298 @@ class Keyring(object):
     def _get_server_verify_keys(self, verify_requests):
         """Tries to find at least one key for each verify request
 
-        For each verify_request, verify_request.deferred is called back with
+        For each verify_request, verify_request.key_ready is called back with
         params (server_name, key_id, VerifyKey) if a key is found, or errbacked
         with a SynapseError if none of the keys are found.
 
         Args:
-            verify_requests (list[VerifyKeyRequest]): list of verify requests
+            verify_requests (list[VerifyJsonRequest]): list of verify requests
         """
 
-        # These are functions that produce keys given a list of key ids
-        key_fetch_fns = (
-            self.get_keys_from_store,  # First try the local store
-            self.get_keys_from_perspectives,  # Then try via perspectives
-            self.get_keys_from_server,  # Then try directly
+        remaining_requests = set(
+            (rq for rq in verify_requests if not rq.key_ready.called)
         )
 
         @defer.inlineCallbacks
         def do_iterations():
             with Measure(self.clock, "get_server_verify_keys"):
-                # dict[str, dict[str, VerifyKey]]: results so far.
-                # map server_name -> key_id -> VerifyKey
-                merged_results = {}
-
-                # dict[str, set(str)]: keys to fetch for each server
-                missing_keys = {}
-                for verify_request in verify_requests:
-                    missing_keys.setdefault(verify_request.server_name, set()).update(
-                        verify_request.key_ids
-                    )
-
-                for fn in key_fetch_fns:
-                    results = yield fn(missing_keys.items())
-                    merged_results.update(results)
-
-                    # We now need to figure out which verify requests we have keys
-                    # for and which we don't
-                    missing_keys = {}
-                    requests_missing_keys = []
-                    for verify_request in verify_requests:
-                        server_name = verify_request.server_name
-                        result_keys = merged_results[server_name]
-
-                        if verify_request.deferred.called:
-                            # We've already called this deferred, which probably
-                            # means that we've already found a key for it.
-                            continue
-
-                        for key_id in verify_request.key_ids:
-                            if key_id in result_keys:
-                                with PreserveLoggingContext():
-                                    verify_request.deferred.callback((
-                                        server_name,
-                                        key_id,
-                                        result_keys[key_id],
-                                    ))
-                                break
-                        else:
-                            # The else block is only reached if the loop above
-                            # doesn't break.
-                            missing_keys.setdefault(server_name, set()).update(
-                                verify_request.key_ids
-                            )
-                            requests_missing_keys.append(verify_request)
-
-                    if not missing_keys:
-                        break
+                for f in self._key_fetchers:
+                    if not remaining_requests:
+                        return
+                    yield self._attempt_key_fetches_with_fetcher(f, remaining_requests)
 
+                # look for any requests which weren't satisfied
                 with PreserveLoggingContext():
-                    for verify_request in requests_missing_keys:
-                        verify_request.deferred.errback(SynapseError(
-                            401,
-                            "No key for %s with id %s" % (
-                                verify_request.server_name, verify_request.key_ids,
-                            ),
-                            Codes.UNAUTHORIZED,
-                        ))
+                    for verify_request in remaining_requests:
+                        verify_request.key_ready.errback(
+                            SynapseError(
+                                401,
+                                "No key for %s with ids in %s (min_validity %i)"
+                                % (
+                                    verify_request.server_name,
+                                    verify_request.key_ids,
+                                    verify_request.minimum_valid_until_ts,
+                                ),
+                                Codes.UNAUTHORIZED,
+                            )
+                        )
 
         def on_err(err):
+            # we don't really expect to get here, because any errors should already
+            # have been caught and logged. But if we do, let's log the error and make
+            # sure that all of the deferreds are resolved.
+            logger.error("Unexpected error in _get_server_verify_keys: %s", err)
             with PreserveLoggingContext():
-                for verify_request in verify_requests:
-                    if not verify_request.deferred.called:
-                        verify_request.deferred.errback(err)
+                for verify_request in remaining_requests:
+                    if not verify_request.key_ready.called:
+                        verify_request.key_ready.errback(err)
 
         run_in_background(do_iterations).addErrback(on_err)
 
     @defer.inlineCallbacks
-    def get_keys_from_store(self, server_name_and_key_ids):
-        """
+    def _attempt_key_fetches_with_fetcher(self, fetcher, remaining_requests):
+        """Use a key fetcher to attempt to satisfy some key requests
 
         Args:
-            server_name_and_key_ids (list[(str, iterable[str])]):
-                list of (server_name, iterable[key_id]) tuples to fetch keys for
+            fetcher (KeyFetcher): fetcher to use to fetch the keys
+            remaining_requests (set[VerifyJsonRequest]): outstanding key requests.
+                Any successfully-completed requests will be removed from the list.
+        """
+        # dict[str, dict[str, int]]: keys to fetch.
+        # server_name -> key_id -> min_valid_ts
+        missing_keys = defaultdict(dict)
+
+        for verify_request in remaining_requests:
+            # any completed requests should already have been removed
+            assert not verify_request.key_ready.called
+            keys_for_server = missing_keys[verify_request.server_name]
+
+            for key_id in verify_request.key_ids:
+                # If we have several requests for the same key, then we only need to
+                # request that key once, but we should do so with the greatest
+                # min_valid_until_ts of the requests, so that we can satisfy all of
+                # the requests.
+                keys_for_server[key_id] = max(
+                    keys_for_server.get(key_id, -1),
+                    verify_request.minimum_valid_until_ts,
+                )
+
+        results = yield fetcher.get_keys(missing_keys)
+
+        completed = list()
+        for verify_request in remaining_requests:
+            server_name = verify_request.server_name
+
+            # see if any of the keys we got this time are sufficient to
+            # complete this VerifyJsonRequest.
+            result_keys = results.get(server_name, {})
+            for key_id in verify_request.key_ids:
+                fetch_key_result = result_keys.get(key_id)
+                if not fetch_key_result:
+                    # we didn't get a result for this key
+                    continue
+
+                if (
+                    fetch_key_result.valid_until_ts
+                    < verify_request.minimum_valid_until_ts
+                ):
+                    # key was not valid at this point
+                    continue
+
+                with PreserveLoggingContext():
+                    verify_request.key_ready.callback(
+                        (server_name, key_id, fetch_key_result.verify_key)
+                    )
+                completed.append(verify_request)
+                break
+
+        remaining_requests.difference_update(completed)
+
+
+class KeyFetcher(object):
+    def get_keys(self, keys_to_fetch):
+        """
+        Args:
+            keys_to_fetch (dict[str, dict[str, int]]):
+                the keys to be fetched. server_name -> key_id -> min_valid_ts
 
         Returns:
-            Deferred: resolves to dict[str, dict[str, VerifyKey]]: map from
-                server_name -> key_id -> VerifyKey
+            Deferred[dict[str, dict[str, synapse.storage.keys.FetchKeyResult|None]]]:
+                map from server_name -> key_id -> FetchKeyResult
         """
-        res = yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.store.get_server_verify_keys,
-                    server_name, key_ids,
-                ).addCallback(lambda ks, server: (server, ks), server_name)
-                for server_name, key_ids in server_name_and_key_ids
-            ],
-            consumeErrors=True,
-        ).addErrback(unwrapFirstError))
+        raise NotImplementedError
 
-        defer.returnValue(dict(res))
+
+class StoreKeyFetcher(KeyFetcher):
+    """KeyFetcher impl which fetches keys from our data store"""
+
+    def __init__(self, hs):
+        self.store = hs.get_datastore()
 
     @defer.inlineCallbacks
-    def get_keys_from_perspectives(self, server_name_and_key_ids):
+    def get_keys(self, keys_to_fetch):
+        """see KeyFetcher.get_keys"""
+
+        keys_to_fetch = (
+            (server_name, key_id)
+            for server_name, keys_for_server in keys_to_fetch.items()
+            for key_id in keys_for_server.keys()
+        )
+
+        res = yield self.store.get_server_verify_keys(keys_to_fetch)
+        keys = {}
+        for (server_name, key_id), key in res.items():
+            keys.setdefault(server_name, {})[key_id] = key
+        defer.returnValue(keys)
+
+
+class BaseV2KeyFetcher(object):
+    def __init__(self, hs):
+        self.store = hs.get_datastore()
+        self.config = hs.get_config()
+
+    @defer.inlineCallbacks
+    def process_v2_response(self, from_server, response_json, time_added_ms):
+        """Parse a 'Server Keys' structure from the result of a /key request
+
+        This is used to parse either the entirety of the response from
+        GET /_matrix/key/v2/server, or a single entry from the list returned by
+        POST /_matrix/key/v2/query.
+
+        Checks that each signature in the response that claims to come from the origin
+        server is valid, and that there is at least one such signature.
+
+        Stores the json in server_keys_json so that it can be used for future responses
+        to /_matrix/key/v2/query.
+
+        Args:
+            from_server (str): the name of the server producing this result: either
+                the origin server for a /_matrix/key/v2/server request, or the notary
+                for a /_matrix/key/v2/query.
+
+            response_json (dict): the json-decoded Server Keys response object
+
+            time_added_ms (int): the timestamp to record in server_keys_json
+
+        Returns:
+            Deferred[dict[str, FetchKeyResult]]: map from key_id to result object
+        """
+        ts_valid_until_ms = response_json[u"valid_until_ts"]
+
+        # start by extracting the keys from the response, since they may be required
+        # to validate the signature on the response.
+        verify_keys = {}
+        for key_id, key_data in response_json["verify_keys"].items():
+            if is_signing_algorithm_supported(key_id):
+                key_base64 = key_data["key"]
+                key_bytes = decode_base64(key_base64)
+                verify_key = decode_verify_key_bytes(key_id, key_bytes)
+                verify_keys[key_id] = FetchKeyResult(
+                    verify_key=verify_key, valid_until_ts=ts_valid_until_ms
+                )
+
+        server_name = response_json["server_name"]
+        verified = False
+        for key_id in response_json["signatures"].get(server_name, {}):
+            # each of the keys used for the signature must be present in the response
+            # json.
+            key = verify_keys.get(key_id)
+            if not key:
+                raise KeyLookupError(
+                    "Key response is signed by key id %s:%s but that key is not "
+                    "present in the response" % (server_name, key_id)
+                )
+
+            verify_signed_json(response_json, server_name, key.verify_key)
+            verified = True
+
+        if not verified:
+            raise KeyLookupError(
+                "Key response for %s is not signed by the origin server"
+                % (server_name,)
+            )
+
+        for key_id, key_data in response_json["old_verify_keys"].items():
+            if is_signing_algorithm_supported(key_id):
+                key_base64 = key_data["key"]
+                key_bytes = decode_base64(key_base64)
+                verify_key = decode_verify_key_bytes(key_id, key_bytes)
+                verify_keys[key_id] = FetchKeyResult(
+                    verify_key=verify_key, valid_until_ts=key_data["expired_ts"]
+                )
+
+        # re-sign the json with our own key, so that it is ready if we are asked to
+        # give it out as a notary server
+        signed_key_json = sign_json(
+            response_json, self.config.server_name, self.config.signing_key[0]
+        )
+
+        signed_key_json_bytes = encode_canonical_json(signed_key_json)
+
+        yield logcontext.make_deferred_yieldable(
+            defer.gatherResults(
+                [
+                    run_in_background(
+                        self.store.store_server_keys_json,
+                        server_name=server_name,
+                        key_id=key_id,
+                        from_server=from_server,
+                        ts_now_ms=time_added_ms,
+                        ts_expires_ms=ts_valid_until_ms,
+                        key_json_bytes=signed_key_json_bytes,
+                    )
+                    for key_id in verify_keys
+                ],
+                consumeErrors=True,
+            ).addErrback(unwrapFirstError)
+        )
+
+        defer.returnValue(verify_keys)
+
+
+class PerspectivesKeyFetcher(BaseV2KeyFetcher):
+    """KeyFetcher impl which fetches keys from the "perspectives" servers"""
+
+    def __init__(self, hs):
+        super(PerspectivesKeyFetcher, self).__init__(hs)
+        self.clock = hs.get_clock()
+        self.client = hs.get_http_client()
+        self.key_servers = self.config.key_servers
+
+    @defer.inlineCallbacks
+    def get_keys(self, keys_to_fetch):
+        """see KeyFetcher.get_keys"""
+
         @defer.inlineCallbacks
-        def get_key(perspective_name, perspective_keys):
+        def get_key(key_server):
             try:
                 result = yield self.get_server_verify_key_v2_indirect(
-                    server_name_and_key_ids, perspective_name, perspective_keys
+                    keys_to_fetch, key_server
                 )
                 defer.returnValue(result)
             except KeyLookupError as e:
                 logger.warning(
-                    "Key lookup failed from %r: %s", perspective_name, e,
+                    "Key lookup failed from %r: %s", key_server.server_name, e
                 )
             except Exception as e:
                 logger.exception(
                     "Unable to get key from %r: %s %s",
-                    perspective_name,
-                    type(e).__name__, str(e),
+                    key_server.server_name,
+                    type(e).__name__,
+                    str(e),
                 )
 
             defer.returnValue({})
 
-        results = yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(get_key, p_name, p_keys)
-                for p_name, p_keys in self.perspective_servers.items()
-            ],
-            consumeErrors=True,
-        ).addErrback(unwrapFirstError))
+        results = yield logcontext.make_deferred_yieldable(
+            defer.gatherResults(
+                [
+                    run_in_background(get_key, server)
+                    for server in self.key_servers
+                ],
+                consumeErrors=True,
+            ).addErrback(unwrapFirstError)
+        )
 
         union_of_keys = {}
         for result in results:
@@ -403,36 +630,32 @@ class Keyring(object):
         defer.returnValue(union_of_keys)
 
     @defer.inlineCallbacks
-    def get_keys_from_server(self, server_name_and_key_ids):
-        results = yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.get_server_verify_key_v2_direct,
-                    server_name,
-                    key_ids,
-                )
-                for server_name, key_ids in server_name_and_key_ids
-            ],
-            consumeErrors=True,
-        ).addErrback(unwrapFirstError))
+    def get_server_verify_key_v2_indirect(
+        self, keys_to_fetch, key_server
+    ):
+        """
+        Args:
+            keys_to_fetch (dict[str, dict[str, int]]):
+                the keys to be fetched. server_name -> key_id -> min_valid_ts
 
-        merged = {}
-        for result in results:
-            merged.update(result)
+            key_server (synapse.config.key.TrustedKeyServer): notary server to query for
+                the keys
 
-        defer.returnValue({
-            server_name: keys
-            for server_name, keys in merged.items()
-            if keys
-        })
+        Returns:
+            Deferred[dict[str, dict[str, synapse.storage.keys.FetchKeyResult]]]: map
+                from server_name -> key_id -> FetchKeyResult
+
+        Raises:
+            KeyLookupError if there was an error processing the entire response from
+                the server
+        """
+        perspective_name = key_server.server_name
+        logger.info(
+            "Requesting keys %s from notary server %s",
+            keys_to_fetch.items(),
+            perspective_name,
+        )
 
-    @defer.inlineCallbacks
-    def get_server_verify_key_v2_indirect(self, server_names_and_key_ids,
-                                          perspective_name,
-                                          perspective_keys):
-        # TODO(mark): Set the minimum_valid_until_ts to that needed by
-        # the events being validated or the current time if validating
-        # an incoming request.
         try:
             query_response = yield self.client.post_json(
                 destination=perspective_name,
@@ -440,241 +663,215 @@ class Keyring(object):
                 data={
                     u"server_keys": {
                         server_name: {
-                            key_id: {
-                                u"minimum_valid_until_ts": 0
-                            } for key_id in key_ids
+                            key_id: {u"minimum_valid_until_ts": min_valid_ts}
+                            for key_id, min_valid_ts in server_keys.items()
                         }
-                        for server_name, key_ids in server_names_and_key_ids
+                        for server_name, server_keys in keys_to_fetch.items()
                     }
                 },
-                long_retries=True,
             )
         except (NotRetryingDestination, RequestSendFailed) as e:
-            raise_from(
-                KeyLookupError("Failed to connect to remote server"), e,
-            )
+            raise_from(KeyLookupError("Failed to connect to remote server"), e)
         except HttpResponseException as e:
-            raise_from(
-                KeyLookupError("Remote server returned an error"), e,
-            )
+            raise_from(KeyLookupError("Remote server returned an error"), e)
 
         keys = {}
+        added_keys = []
 
-        responses = query_response["server_keys"]
+        time_now_ms = self.clock.time_msec()
 
-        for response in responses:
-            if (u"signatures" not in response
-                    or perspective_name not in response[u"signatures"]):
+        for response in query_response["server_keys"]:
+            # do this first, so that we can give useful errors thereafter
+            server_name = response.get("server_name")
+            if not isinstance(server_name, six.string_types):
                 raise KeyLookupError(
-                    "Key response not signed by perspective server"
-                    " %r" % (perspective_name,)
+                    "Malformed response from key notary server %s: invalid server_name"
+                    % (perspective_name,)
                 )
 
-            verified = False
-            for key_id in response[u"signatures"][perspective_name]:
-                if key_id in perspective_keys:
-                    verify_signed_json(
-                        response,
-                        perspective_name,
-                        perspective_keys[key_id]
-                    )
-                    verified = True
+            try:
+                self._validate_perspectives_response(
+                    key_server,
+                    response,
+                )
 
-            if not verified:
-                logging.info(
-                    "Response from perspective server %r not signed with a"
-                    " known key, signed with: %r, known keys: %r",
+                processed_response = yield self.process_v2_response(
+                    perspective_name, response, time_added_ms=time_now_ms
+                )
+            except KeyLookupError as e:
+                logger.warning(
+                    "Error processing response from key notary server %s for origin "
+                    "server %s: %s",
                     perspective_name,
-                    list(response[u"signatures"][perspective_name]),
-                    list(perspective_keys)
-                )
-                raise KeyLookupError(
-                    "Response not signed with a known key for perspective"
-                    " server %r" % (perspective_name,)
+                    server_name,
+                    e,
                 )
+                # we continue to process the rest of the response
+                continue
 
-            processed_response = yield self.process_v2_response(
-                perspective_name, response, only_from_server=False
+            added_keys.extend(
+                (server_name, key_id, key) for key_id, key in processed_response.items()
             )
+            keys.setdefault(server_name, {}).update(processed_response)
 
-            for server_name, response_keys in processed_response.items():
-                keys.setdefault(server_name, {}).update(response_keys)
-
-        yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.store_keys,
-                    server_name=server_name,
-                    from_server=perspective_name,
-                    verify_keys=response_keys,
-                )
-                for server_name, response_keys in keys.items()
-            ],
-            consumeErrors=True
-        ).addErrback(unwrapFirstError))
+        yield self.store.store_server_verify_keys(
+            perspective_name, time_now_ms, added_keys
+        )
 
         defer.returnValue(keys)
 
+    def _validate_perspectives_response(
+        self, key_server, response,
+    ):
+        """Optionally check the signature on the result of a /key/query request
+
+        Args:
+            key_server (synapse.config.key.TrustedKeyServer): the notary server that
+                produced this result
+
+            response (dict): the json-decoded Server Keys response object
+        """
+        perspective_name = key_server.server_name
+        perspective_keys = key_server.verify_keys
+
+        if perspective_keys is None:
+            # signature checking is disabled on this server
+            return
+
+        if (
+            u"signatures" not in response
+            or perspective_name not in response[u"signatures"]
+        ):
+            raise KeyLookupError("Response not signed by the notary server")
+
+        verified = False
+        for key_id in response[u"signatures"][perspective_name]:
+            if key_id in perspective_keys:
+                verify_signed_json(response, perspective_name, perspective_keys[key_id])
+                verified = True
+
+        if not verified:
+            raise KeyLookupError(
+                "Response not signed with a known key: signed with: %r, known keys: %r"
+                % (
+                    list(response[u"signatures"][perspective_name].keys()),
+                    list(perspective_keys.keys()),
+                )
+            )
+
+
+class ServerKeyFetcher(BaseV2KeyFetcher):
+    """KeyFetcher impl which fetches keys from the origin servers"""
+
+    def __init__(self, hs):
+        super(ServerKeyFetcher, self).__init__(hs)
+        self.clock = hs.get_clock()
+        self.client = hs.get_http_client()
+
+    def get_keys(self, keys_to_fetch):
+        """
+        Args:
+            keys_to_fetch (dict[str, iterable[str]]):
+                the keys to be fetched. server_name -> key_ids
+
+        Returns:
+            Deferred[dict[str, dict[str, synapse.storage.keys.FetchKeyResult|None]]]:
+                map from server_name -> key_id -> FetchKeyResult
+        """
+
+        results = {}
+
+        @defer.inlineCallbacks
+        def get_key(key_to_fetch_item):
+            server_name, key_ids = key_to_fetch_item
+            try:
+                keys = yield self.get_server_verify_key_v2_direct(server_name, key_ids)
+                results[server_name] = keys
+            except KeyLookupError as e:
+                logger.warning(
+                    "Error looking up keys %s from %s: %s", key_ids, server_name, e
+                )
+            except Exception:
+                logger.exception("Error getting keys %s from %s", key_ids, server_name)
+
+        return yieldable_gather_results(get_key, keys_to_fetch.items()).addCallback(
+            lambda _: results
+        )
+
     @defer.inlineCallbacks
     def get_server_verify_key_v2_direct(self, server_name, key_ids):
-        keys = {}
+        """
+
+        Args:
+            server_name (str):
+            key_ids (iterable[str]):
+
+        Returns:
+            Deferred[dict[str, FetchKeyResult]]: map from key ID to lookup result
+
+        Raises:
+            KeyLookupError if there was a problem making the lookup
+        """
+        keys = {}  # type: dict[str, FetchKeyResult]
 
         for requested_key_id in key_ids:
+            # we may have found this key as a side-effect of asking for another.
             if requested_key_id in keys:
                 continue
 
+            time_now_ms = self.clock.time_msec()
             try:
                 response = yield self.client.get_json(
                     destination=server_name,
-                    path="/_matrix/key/v2/server/" + urllib.parse.quote(requested_key_id),
+                    path="/_matrix/key/v2/server/"
+                    + urllib.parse.quote(requested_key_id),
                     ignore_backoff=True,
+
+                    # we only give the remote server 10s to respond. It should be an
+                    # easy request to handle, so if it doesn't reply within 10s, it's
+                    # probably not going to.
+                    #
+                    # Furthermore, when we are acting as a notary server, we cannot
+                    # wait all day for all of the origin servers, as the requesting
+                    # server will otherwise time out before we can respond.
+                    #
+                    # (Note that get_json may make 4 attempts, so this can still take
+                    # almost 45 seconds to fetch the headers, plus up to another 60s to
+                    # read the response).
+                    timeout=10000,
                 )
             except (NotRetryingDestination, RequestSendFailed) as e:
-                raise_from(
-                    KeyLookupError("Failed to connect to remote server"), e,
-                )
+                raise_from(KeyLookupError("Failed to connect to remote server"), e)
             except HttpResponseException as e:
-                raise_from(
-                    KeyLookupError("Remote server returned an error"), e,
-                )
+                raise_from(KeyLookupError("Remote server returned an error"), e)
 
-            if (u"signatures" not in response
-                    or server_name not in response[u"signatures"]):
-                raise KeyLookupError("Key response not signed by remote server")
+            if response["server_name"] != server_name:
+                raise KeyLookupError(
+                    "Expected a response for server %r not %r"
+                    % (server_name, response["server_name"])
+                )
 
             response_keys = yield self.process_v2_response(
                 from_server=server_name,
-                requested_ids=[requested_key_id],
                 response_json=response,
+                time_added_ms=time_now_ms,
+            )
+            yield self.store.store_server_verify_keys(
+                server_name,
+                time_now_ms,
+                ((server_name, key_id, key) for key_id, key in response_keys.items()),
             )
-
             keys.update(response_keys)
 
-        yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.store_keys,
-                    server_name=key_server_name,
-                    from_server=server_name,
-                    verify_keys=verify_keys,
-                )
-                for key_server_name, verify_keys in keys.items()
-            ],
-            consumeErrors=True
-        ).addErrback(unwrapFirstError))
-
         defer.returnValue(keys)
 
-    @defer.inlineCallbacks
-    def process_v2_response(self, from_server, response_json,
-                            requested_ids=[], only_from_server=True):
-        time_now_ms = self.clock.time_msec()
-        response_keys = {}
-        verify_keys = {}
-        for key_id, key_data in response_json["verify_keys"].items():
-            if is_signing_algorithm_supported(key_id):
-                key_base64 = key_data["key"]
-                key_bytes = decode_base64(key_base64)
-                verify_key = decode_verify_key_bytes(key_id, key_bytes)
-                verify_key.time_added = time_now_ms
-                verify_keys[key_id] = verify_key
-
-        old_verify_keys = {}
-        for key_id, key_data in response_json["old_verify_keys"].items():
-            if is_signing_algorithm_supported(key_id):
-                key_base64 = key_data["key"]
-                key_bytes = decode_base64(key_base64)
-                verify_key = decode_verify_key_bytes(key_id, key_bytes)
-                verify_key.expired = key_data["expired_ts"]
-                verify_key.time_added = time_now_ms
-                old_verify_keys[key_id] = verify_key
-
-        results = {}
-        server_name = response_json["server_name"]
-        if only_from_server:
-            if server_name != from_server:
-                raise KeyLookupError(
-                    "Expected a response for server %r not %r" % (
-                        from_server, server_name
-                    )
-                )
-        for key_id in response_json["signatures"].get(server_name, {}):
-            if key_id not in response_json["verify_keys"]:
-                raise KeyLookupError(
-                    "Key response must include verification keys for all"
-                    " signatures"
-                )
-            if key_id in verify_keys:
-                verify_signed_json(
-                    response_json,
-                    server_name,
-                    verify_keys[key_id]
-                )
-
-        signed_key_json = sign_json(
-            response_json,
-            self.config.server_name,
-            self.config.signing_key[0],
-        )
-
-        signed_key_json_bytes = encode_canonical_json(signed_key_json)
-        ts_valid_until_ms = signed_key_json[u"valid_until_ts"]
-
-        updated_key_ids = set(requested_ids)
-        updated_key_ids.update(verify_keys)
-        updated_key_ids.update(old_verify_keys)
-
-        response_keys.update(verify_keys)
-        response_keys.update(old_verify_keys)
-
-        yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.store.store_server_keys_json,
-                    server_name=server_name,
-                    key_id=key_id,
-                    from_server=server_name,
-                    ts_now_ms=time_now_ms,
-                    ts_expires_ms=ts_valid_until_ms,
-                    key_json_bytes=signed_key_json_bytes,
-                )
-                for key_id in updated_key_ids
-            ],
-            consumeErrors=True,
-        ).addErrback(unwrapFirstError))
-
-        results[server_name] = response_keys
-
-        defer.returnValue(results)
-
-    def store_keys(self, server_name, from_server, verify_keys):
-        """Store a collection of verify keys for a given server
-        Args:
-            server_name(str): The name of the server the keys are for.
-            from_server(str): The server the keys were downloaded from.
-            verify_keys(dict): A mapping of key_id to VerifyKey.
-        Returns:
-            A deferred that completes when the keys are stored.
-        """
-        # TODO(markjh): Store whether the keys have expired.
-        return logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                run_in_background(
-                    self.store.store_server_verify_key,
-                    server_name, server_name, key.time_added, key
-                )
-                for key_id, key in verify_keys.items()
-            ],
-            consumeErrors=True,
-        ).addErrback(unwrapFirstError))
-
 
 @defer.inlineCallbacks
 def _handle_key_deferred(verify_request):
     """Waits for the key to become available, and then performs a verification
 
     Args:
-        verify_request (VerifyKeyRequest):
+        verify_request (VerifyJsonRequest):
 
     Returns:
         Deferred[None]
@@ -683,48 +880,25 @@ def _handle_key_deferred(verify_request):
         SynapseError if there was a problem performing the verification
     """
     server_name = verify_request.server_name
-    try:
-        with PreserveLoggingContext():
-            _, key_id, verify_key = yield verify_request.deferred
-    except KeyLookupError as e:
-        logger.warn(
-            "Failed to download keys for %s: %s %s",
-            server_name, type(e).__name__, str(e),
-        )
-        raise SynapseError(
-            502,
-            "Error downloading keys for %s" % (server_name,),
-            Codes.UNAUTHORIZED,
-        )
-    except Exception as e:
-        logger.exception(
-            "Got Exception when downloading keys for %s: %s %s",
-            server_name, type(e).__name__, str(e),
-        )
-        raise SynapseError(
-            401,
-            "No key for %s with id %s" % (server_name, verify_request.key_ids),
-            Codes.UNAUTHORIZED,
-        )
+    with PreserveLoggingContext():
+        _, key_id, verify_key = yield verify_request.key_ready
 
     json_object = verify_request.json_object
 
-    logger.debug("Got key %s %s:%s for server %s, verifying" % (
-        key_id, verify_key.alg, verify_key.version, server_name,
-    ))
     try:
         verify_signed_json(json_object, server_name, verify_key)
     except SignatureVerifyException as e:
         logger.debug(
             "Error verifying signature for %s:%s:%s with key %s: %s",
-            server_name, verify_key.alg, verify_key.version,
+            server_name,
+            verify_key.alg,
+            verify_key.version,
             encode_verify_key_base64(verify_key),
             str(e),
         )
         raise SynapseError(
             401,
-            "Invalid signature for server %s with key %s:%s: %s" % (
-                server_name, verify_key.alg, verify_key.version, str(e),
-            ),
+            "Invalid signature for server %s with key %s:%s: %s"
+            % (server_name, verify_key.alg, verify_key.version, str(e)),
             Codes.UNAUTHORIZED,
         )
diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index 12056d5be2..1edd19cc13 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -21,6 +21,7 @@ import six
 
 from unpaddedbase64 import encode_base64
 
+from synapse.api.errors import UnsupportedRoomVersionError
 from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, EventFormatVersions
 from synapse.util.caches import intern_dict
 from synapse.util.frozenutils import freeze
@@ -335,13 +336,32 @@ class FrozenEventV2(EventBase):
         return self.__repr__()
 
     def __repr__(self):
-        return "<FrozenEventV2 event_id='%s', type='%s', state_key='%s'>" % (
+        return "<%s event_id='%s', type='%s', state_key='%s'>" % (
+            self.__class__.__name__,
             self.event_id,
             self.get("type", None),
             self.get("state_key", None),
         )
 
 
+class FrozenEventV3(FrozenEventV2):
+    """FrozenEventV3, which differs from FrozenEventV2 only in the event_id format"""
+    format_version = EventFormatVersions.V3  # All events of this type are V3
+
+    @property
+    def event_id(self):
+        # We have to import this here as otherwise we get an import loop which
+        # is hard to break.
+        from synapse.crypto.event_signing import compute_event_reference_hash
+
+        if self._event_id:
+            return self._event_id
+        self._event_id = "$" + encode_base64(
+            compute_event_reference_hash(self)[1], urlsafe=True
+        )
+        return self._event_id
+
+
 def room_version_to_event_format(room_version):
     """Converts a room version string to the event format
 
@@ -350,12 +370,15 @@ def room_version_to_event_format(room_version):
 
     Returns:
         int
+
+    Raises:
+        UnsupportedRoomVersionError if the room version is unknown
     """
     v = KNOWN_ROOM_VERSIONS.get(room_version)
 
     if not v:
-        # We should have already checked version, so this should not happen
-        raise RuntimeError("Unrecognized room version %s" % (room_version,))
+        # this can happen if support is withdrawn for a room version
+        raise UnsupportedRoomVersionError()
 
     return v.event_format
 
@@ -376,6 +399,8 @@ def event_type_from_format_version(format_version):
         return FrozenEvent
     elif format_version == EventFormatVersions.V2:
         return FrozenEventV2
+    elif format_version == EventFormatVersions.V3:
+        return FrozenEventV3
     else:
         raise Exception(
             "No event format %r" % (format_version,)
diff --git a/synapse/events/builder.py b/synapse/events/builder.py
index fba27177c7..546b6f4982 100644
--- a/synapse/events/builder.py
+++ b/synapse/events/builder.py
@@ -18,6 +18,7 @@ import attr
 from twisted.internet import defer
 
 from synapse.api.constants import MAX_DEPTH
+from synapse.api.errors import UnsupportedRoomVersionError
 from synapse.api.room_versions import (
     KNOWN_EVENT_FORMAT_VERSIONS,
     KNOWN_ROOM_VERSIONS,
@@ -75,6 +76,7 @@ class EventBuilder(object):
     # someone tries to get them when they don't exist.
     _state_key = attr.ib(default=None)
     _redacts = attr.ib(default=None)
+    _origin_server_ts = attr.ib(default=None)
 
     internal_metadata = attr.ib(default=attr.Factory(lambda: _EventInternalMetadata({})))
 
@@ -141,6 +143,9 @@ class EventBuilder(object):
         if self._redacts is not None:
             event_dict["redacts"] = self._redacts
 
+        if self._origin_server_ts is not None:
+            event_dict["origin_server_ts"] = self._origin_server_ts
+
         defer.returnValue(
             create_local_event_from_event_dict(
                 clock=self._clock,
@@ -178,9 +183,8 @@ class EventBuilderFactory(object):
         """
         v = KNOWN_ROOM_VERSIONS.get(room_version)
         if not v:
-            raise Exception(
-                "No event format defined for version %r" % (room_version,)
-            )
+            # this can happen if support is withdrawn for a room version
+            raise UnsupportedRoomVersionError()
         return self.for_room_version(v, key_values)
 
     def for_room_version(self, room_version, key_values):
@@ -209,6 +213,7 @@ class EventBuilderFactory(object):
             content=key_values.get("content", {}),
             unsigned=key_values.get("unsigned", {}),
             redacts=key_values.get("redacts", None),
+            origin_server_ts=key_values.get("origin_server_ts", None),
         )
 
 
@@ -245,7 +250,7 @@ def create_local_event_from_event_dict(clock, hostname, signing_key,
         event_dict["event_id"] = _create_event_id(clock, hostname)
 
     event_dict["origin"] = hostname
-    event_dict["origin_server_ts"] = time_now
+    event_dict.setdefault("origin_server_ts", time_now)
 
     event_dict.setdefault("unsigned", {})
     age = event_dict["unsigned"].pop("age", 0)
diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py
index 368b5f6ae4..fa09c132a0 100644
--- a/synapse/events/snapshot.py
+++ b/synapse/events/snapshot.py
@@ -187,7 +187,9 @@ class EventContext(object):
 
         Returns:
             Deferred[dict[(str, str), str]|None]: Returns None if state_group
-            is None, which happens when the associated event is an outlier.
+                is None, which happens when the associated event is an outlier.
+                Maps a (type, state_key) to the event ID of the state event matching
+                this tuple.
         """
 
         if not self._fetching_state_deferred:
@@ -205,7 +207,9 @@ class EventContext(object):
 
         Returns:
             Deferred[dict[(str, str), str]|None]: Returns None if state_group
-            is None, which happens when the associated event is an outlier.
+                is None, which happens when the associated event is an outlier.
+                Maps a (type, state_key) to the event ID of the state event matching
+                this tuple.
         """
 
         if not self._fetching_state_deferred:
diff --git a/synapse/events/spamcheck.py b/synapse/events/spamcheck.py
index 633e068eb8..6058077f75 100644
--- a/synapse/events/spamcheck.py
+++ b/synapse/events/spamcheck.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2017 New Vector Ltd.
+# Copyright 2017 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/events/third_party_rules.py b/synapse/events/third_party_rules.py
new file mode 100644
index 0000000000..50ceeb1e8e
--- /dev/null
+++ b/synapse/events/third_party_rules.py
@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from twisted.internet import defer
+
+
+class ThirdPartyEventRules(object):
+    """Allows server admins to provide a Python module implementing an extra
+    set of rules to apply when processing events.
+
+    This is designed to help admins of closed federations with enforcing custom
+    behaviours.
+    """
+
+    def __init__(self, hs):
+        self.third_party_rules = None
+
+        self.store = hs.get_datastore()
+
+        module = None
+        config = None
+        if hs.config.third_party_event_rules:
+            module, config = hs.config.third_party_event_rules
+
+        if module is not None:
+            self.third_party_rules = module(
+                config=config,
+                http_client=hs.get_simple_http_client(),
+            )
+
+    @defer.inlineCallbacks
+    def check_event_allowed(self, event, context):
+        """Check if a provided event should be allowed in the given context.
+
+        Args:
+            event (synapse.events.EventBase): The event to be checked.
+            context (synapse.events.snapshot.EventContext): The context of the event.
+
+        Returns:
+            defer.Deferred[bool]: True if the event should be allowed, False if not.
+        """
+        if self.third_party_rules is None:
+            defer.returnValue(True)
+
+        prev_state_ids = yield context.get_prev_state_ids(self.store)
+
+        # Retrieve the state events from the database.
+        state_events = {}
+        for key, event_id in prev_state_ids.items():
+            state_events[key] = yield self.store.get_event(event_id, allow_none=True)
+
+        ret = yield self.third_party_rules.check_event_allowed(event, state_events)
+        defer.returnValue(ret)
+
+    @defer.inlineCallbacks
+    def on_create_room(self, requester, config, is_requester_admin):
+        """Intercept requests to create room to allow, deny or update the
+        request config.
+
+        Args:
+            requester (Requester)
+            config (dict): The creation config from the client.
+            is_requester_admin (bool): If the requester is an admin
+
+        Returns:
+            defer.Deferred
+        """
+
+        if self.third_party_rules is None:
+            return
+
+        yield self.third_party_rules.on_create_room(
+            requester, config, is_requester_admin
+        )
+
+    @defer.inlineCallbacks
+    def check_threepid_can_be_invited(self, medium, address, room_id):
+        """Check if a provided 3PID can be invited in the given room.
+
+        Args:
+            medium (str): The 3PID's medium.
+            address (str): The 3PID's address.
+            room_id (str): The room we want to invite the threepid to.
+
+        Returns:
+            defer.Deferred[bool], True if the 3PID can be invited, False if not.
+        """
+
+        if self.third_party_rules is None:
+            defer.returnValue(True)
+
+        state_ids = yield self.store.get_filtered_current_state_ids(room_id)
+        room_state_events = yield self.store.get_events(state_ids.values())
+
+        state_events = {}
+        for key, event_id in state_ids.items():
+            state_events[key] = room_state_events[event_id]
+
+        ret = yield self.third_party_rules.check_threepid_can_be_invited(
+            medium, address, state_events,
+        )
+        defer.returnValue(ret)
diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index 07fccdd8f9..e2d4384de1 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -19,7 +19,10 @@ from six import string_types
 
 from frozendict import frozendict
 
-from synapse.api.constants import EventTypes
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, RelationTypes
+from synapse.util.async_helpers import yieldable_gather_results
 
 from . import EventBase
 
@@ -311,3 +314,93 @@ def serialize_event(e, time_now_ms, as_client_event=True,
         d = only_fields(d, only_event_fields)
 
     return d
+
+
+class EventClientSerializer(object):
+    """Serializes events that are to be sent to clients.
+
+    This is used for bundling extra information with any events to be sent to
+    clients.
+    """
+
+    def __init__(self, hs):
+        self.store = hs.get_datastore()
+        self.experimental_msc1849_support_enabled = (
+            hs.config.experimental_msc1849_support_enabled
+        )
+
+    @defer.inlineCallbacks
+    def serialize_event(self, event, time_now, bundle_aggregations=True, **kwargs):
+        """Serializes a single event.
+
+        Args:
+            event (EventBase)
+            time_now (int): The current time in milliseconds
+            bundle_aggregations (bool): Whether to bundle in related events
+            **kwargs: Arguments to pass to `serialize_event`
+
+        Returns:
+            Deferred[dict]: The serialized event
+        """
+        # To handle the case of presence events and the like
+        if not isinstance(event, EventBase):
+            defer.returnValue(event)
+
+        event_id = event.event_id
+        serialized_event = serialize_event(event, time_now, **kwargs)
+
+        # If MSC1849 is enabled then we need to look if thre are any relations
+        # we need to bundle in with the event
+        if self.experimental_msc1849_support_enabled and bundle_aggregations:
+            annotations = yield self.store.get_aggregation_groups_for_event(
+                event_id,
+            )
+            references = yield self.store.get_relations_for_event(
+                event_id, RelationTypes.REFERENCE, direction="f",
+            )
+
+            if annotations.chunk:
+                r = serialized_event["unsigned"].setdefault("m.relations", {})
+                r[RelationTypes.ANNOTATION] = annotations.to_dict()
+
+            if references.chunk:
+                r = serialized_event["unsigned"].setdefault("m.relations", {})
+                r[RelationTypes.REFERENCE] = references.to_dict()
+
+            edit = None
+            if event.type == EventTypes.Message:
+                edit = yield self.store.get_applicable_edit(event_id)
+
+            if edit:
+                # If there is an edit replace the content, preserving existing
+                # relations.
+
+                relations = event.content.get("m.relates_to")
+                serialized_event["content"] = edit.content.get("m.new_content", {})
+                if relations:
+                    serialized_event["content"]["m.relates_to"] = relations
+                else:
+                    serialized_event["content"].pop("m.relates_to", None)
+
+                r = serialized_event["unsigned"].setdefault("m.relations", {})
+                r[RelationTypes.REPLACE] = {
+                    "event_id": edit.event_id,
+                }
+
+        defer.returnValue(serialized_event)
+
+    def serialize_events(self, events, time_now, **kwargs):
+        """Serializes multiple events.
+
+        Args:
+            event (iter[EventBase])
+            time_now (int): The current time in milliseconds
+            **kwargs: Arguments to pass to `serialize_event`
+
+        Returns:
+            Deferred[list[dict]]: The list of serialized events
+        """
+        return yieldable_gather_results(
+            self.serialize_event, events,
+            time_now=time_now, **kwargs
+        )
diff --git a/synapse/events/validator.py b/synapse/events/validator.py
index 514273c792..711af512b2 100644
--- a/synapse/events/validator.py
+++ b/synapse/events/validator.py
@@ -15,8 +15,8 @@
 
 from six import string_types
 
-from synapse.api.constants import EventTypes, Membership
-from synapse.api.errors import SynapseError
+from synapse.api.constants import MAX_ALIAS_LENGTH, EventTypes, Membership
+from synapse.api.errors import Codes, SynapseError
 from synapse.api.room_versions import EventFormatVersions
 from synapse.types import EventID, RoomID, UserID
 
@@ -56,6 +56,17 @@ class EventValidator(object):
             if not isinstance(getattr(event, s), string_types):
                 raise SynapseError(400, "'%s' not a string type" % (s,))
 
+        if event.type == EventTypes.Aliases:
+            if "aliases" in event.content:
+                for alias in event.content["aliases"]:
+                    if len(alias) > MAX_ALIAS_LENGTH:
+                        raise SynapseError(
+                            400,
+                            ("Can't create aliases longer than"
+                             " %d characters" % (MAX_ALIAS_LENGTH,)),
+                            Codes.INVALID_PARAM,
+                        )
+
     def validate_builder(self, event):
         """Validates that the builder/event has roughly the right format. Only
         checks values that we expect a proto event to have, rather than all the
diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py
index dfe6b4aa5c..fc5cfb7d83 100644
--- a/synapse/federation/federation_base.py
+++ b/synapse/federation/federation_base.py
@@ -223,9 +223,6 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
            the signatures are valid, or fail (with a SynapseError) if not.
     """
 
-    # (currently this is written assuming the v1 room structure; we'll probably want a
-    # separate function for checking v2 rooms)
-
     # we want to check that the event is signed by:
     #
     # (a) the sender's server
@@ -257,6 +254,10 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
         for p in pdus
     ]
 
+    v = KNOWN_ROOM_VERSIONS.get(room_version)
+    if not v:
+        raise RuntimeError("Unrecognized room version %s" % (room_version,))
+
     # First we check that the sender event is signed by the sender's domain
     # (except if its a 3pid invite, in which case it may be sent by any server)
     pdus_to_check_sender = [
@@ -264,34 +265,66 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
         if not _is_invite_via_3pid(p.pdu)
     ]
 
-    more_deferreds = keyring.verify_json_objects_for_server([
-        (p.sender_domain, p.redacted_pdu_json)
-        for p in pdus_to_check_sender
-    ])
+    more_deferreds = keyring.verify_json_objects_for_server(
+        [
+            (
+                p.sender_domain,
+                p.redacted_pdu_json,
+                p.pdu.origin_server_ts if v.enforce_key_validity else 0,
+                p.pdu.event_id,
+            )
+            for p in pdus_to_check_sender
+        ]
+    )
+
+    def sender_err(e, pdu_to_check):
+        errmsg = "event id %s: unable to verify signature for sender %s: %s" % (
+            pdu_to_check.pdu.event_id,
+            pdu_to_check.sender_domain,
+            e.getErrorMessage(),
+        )
+        # XX not really sure if these are the right codes, but they are what
+        # we've done for ages
+        raise SynapseError(400, errmsg, Codes.UNAUTHORIZED)
 
     for p, d in zip(pdus_to_check_sender, more_deferreds):
+        d.addErrback(sender_err, p)
         p.deferreds.append(d)
 
     # now let's look for events where the sender's domain is different to the
     # event id's domain (normally only the case for joins/leaves), and add additional
     # checks. Only do this if the room version has a concept of event ID domain
     # (ie, the room version uses old-style non-hash event IDs).
-    v = KNOWN_ROOM_VERSIONS.get(room_version)
-    if not v:
-        raise RuntimeError("Unrecognized room version %s" % (room_version,))
-
     if v.event_format == EventFormatVersions.V1:
         pdus_to_check_event_id = [
             p for p in pdus_to_check
             if p.sender_domain != get_domain_from_id(p.pdu.event_id)
         ]
 
-        more_deferreds = keyring.verify_json_objects_for_server([
-            (get_domain_from_id(p.pdu.event_id), p.redacted_pdu_json)
-            for p in pdus_to_check_event_id
-        ])
+        more_deferreds = keyring.verify_json_objects_for_server(
+            [
+                (
+                    get_domain_from_id(p.pdu.event_id),
+                    p.redacted_pdu_json,
+                    p.pdu.origin_server_ts if v.enforce_key_validity else 0,
+                    p.pdu.event_id,
+                )
+                for p in pdus_to_check_event_id
+            ]
+        )
+
+        def event_err(e, pdu_to_check):
+            errmsg = (
+                "event id %s: unable to verify signature for event id domain: %s" % (
+                    pdu_to_check.pdu.event_id,
+                    e.getErrorMessage(),
+                )
+            )
+            # XX as above: not really sure if these are the right codes
+            raise SynapseError(400, errmsg, Codes.UNAUTHORIZED)
 
         for p, d in zip(pdus_to_check_event_id, more_deferreds):
+            d.addErrback(event_err, p)
             p.deferreds.append(d)
 
     # replace lists of deferreds with single Deferreds
diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index f3fc897a0a..70573746d6 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -17,7 +17,6 @@
 import copy
 import itertools
 import logging
-import random
 
 from six.moves import range
 
@@ -233,7 +232,8 @@ class FederationClient(FederationBase):
                 moving to the next destination. None indicates no timeout.
 
         Returns:
-            Deferred: Results in the requested PDU.
+            Deferred: Results in the requested PDU, or None if we were unable to find
+               it.
         """
 
         # TODO: Rate limit the number of times we try and get the same event.
@@ -258,7 +258,12 @@ class FederationClient(FederationBase):
                     destination, event_id, timeout=timeout,
                 )
 
-                logger.debug("transaction_data %r", transaction_data)
+                logger.debug(
+                    "retrieved event id %s from %s: %r",
+                    event_id,
+                    destination,
+                    transaction_data,
+                )
 
                 pdu_list = [
                     event_from_pdu_json(p, format_ver, outlier=outlier)
@@ -280,6 +285,7 @@ class FederationClient(FederationBase):
                     "Failed to get PDU %s from %s because %s",
                     event_id, destination, e,
                 )
+                continue
             except NotRetryingDestination as e:
                 logger.info(str(e))
                 continue
@@ -326,12 +332,16 @@ class FederationClient(FederationBase):
             state_event_ids = result["pdu_ids"]
             auth_event_ids = result.get("auth_chain_ids", [])
 
-            fetched_events, failed_to_fetch = yield self.get_events(
-                [destination], room_id, set(state_event_ids + auth_event_ids)
+            fetched_events, failed_to_fetch = yield self.get_events_from_store_or_dest(
+                destination, room_id, set(state_event_ids + auth_event_ids)
             )
 
             if failed_to_fetch:
-                logger.warn("Failed to get %r", failed_to_fetch)
+                logger.warning(
+                    "Failed to fetch missing state/auth events for %s: %s",
+                    room_id,
+                    failed_to_fetch
+                )
 
             event_map = {
                 ev.event_id: ev for ev in fetched_events
@@ -397,27 +407,20 @@ class FederationClient(FederationBase):
         defer.returnValue((signed_pdus, signed_auth))
 
     @defer.inlineCallbacks
-    def get_events(self, destinations, room_id, event_ids, return_local=True):
-        """Fetch events from some remote destinations, checking if we already
-        have them.
+    def get_events_from_store_or_dest(self, destination, room_id, event_ids):
+        """Fetch events from a remote destination, checking if we already have them.
 
         Args:
-            destinations (list)
+            destination (str)
             room_id (str)
             event_ids (list)
-            return_local (bool): Whether to include events we already have in
-                the DB in the returned list of events
 
         Returns:
             Deferred: A deferred resolving to a 2-tuple where the first is a list of
             events and the second is a list of event ids that we failed to fetch.
         """
-        if return_local:
-            seen_events = yield self.store.get_events(event_ids, allow_rejected=True)
-            signed_events = list(seen_events.values())
-        else:
-            seen_events = yield self.store.have_seen_events(event_ids)
-            signed_events = []
+        seen_events = yield self.store.get_events(event_ids, allow_rejected=True)
+        signed_events = list(seen_events.values())
 
         failed_to_fetch = set()
 
@@ -428,10 +431,11 @@ class FederationClient(FederationBase):
         if not missing_events:
             defer.returnValue((signed_events, failed_to_fetch))
 
-        def random_server_list():
-            srvs = list(destinations)
-            random.shuffle(srvs)
-            return srvs
+        logger.debug(
+            "Fetching unknown state/auth events %s for room %s",
+            missing_events,
+            event_ids,
+        )
 
         room_version = yield self.store.get_room_version(room_id)
 
@@ -443,7 +447,7 @@ class FederationClient(FederationBase):
             deferreds = [
                 run_in_background(
                     self.get_pdu,
-                    destinations=random_server_list(),
+                    destinations=[destination],
                     event_id=e_id,
                     room_version=room_version,
                 )
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index df60828dba..4c28c1dc3c 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -33,6 +33,7 @@ from synapse.api.errors import (
     IncompatibleRoomVersionError,
     NotFoundError,
     SynapseError,
+    UnsupportedRoomVersionError,
 )
 from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.crypto.event_signing import compute_event_signature
@@ -198,11 +199,22 @@ class FederationServer(FederationBase):
 
             try:
                 room_version = yield self.store.get_room_version(room_id)
-                format_ver = room_version_to_event_format(room_version)
             except NotFoundError:
                 logger.info("Ignoring PDU for unknown room_id: %s", room_id)
                 continue
 
+            try:
+                format_ver = room_version_to_event_format(room_version)
+            except UnsupportedRoomVersionError:
+                # this can happen if support for a given room version is withdrawn,
+                # so that we still get events for said room.
+                logger.info(
+                    "Ignoring PDU for room %s with unknown version %s",
+                    room_id,
+                    room_version,
+                )
+                continue
+
             event = event_from_pdu_json(p, format_ver)
             pdus_by_room.setdefault(room_id, []).append(event)
 
diff --git a/synapse/federation/sender/per_destination_queue.py b/synapse/federation/sender/per_destination_queue.py
index be99211003..22a2735405 100644
--- a/synapse/federation/sender/per_destination_queue.py
+++ b/synapse/federation/sender/per_destination_queue.py
@@ -33,12 +33,14 @@ from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.storage import UserPresenceState
 from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter
 
+# This is defined in the Matrix spec and enforced by the receiver.
+MAX_EDUS_PER_TRANSACTION = 100
+
 logger = logging.getLogger(__name__)
 
 
 sent_edus_counter = Counter(
-    "synapse_federation_client_sent_edus",
-    "Total number of EDUs successfully sent",
+    "synapse_federation_client_sent_edus", "Total number of EDUs successfully sent"
 )
 
 sent_edus_by_type = Counter(
@@ -58,6 +60,7 @@ class PerDestinationQueue(object):
         destination (str): the server_name of the destination that we are managing
             transmission for.
     """
+
     def __init__(self, hs, transaction_manager, destination):
         self._server_name = hs.hostname
         self._clock = hs.get_clock()
@@ -68,17 +71,17 @@ class PerDestinationQueue(object):
         self.transmission_loop_running = False
 
         # a list of tuples of (pending pdu, order)
-        self._pending_pdus = []    # type: list[tuple[EventBase, int]]
-        self._pending_edus = []    # type: list[Edu]
+        self._pending_pdus = []  # type: list[tuple[EventBase, int]]
+        self._pending_edus = []  # type: list[Edu]
 
         # Pending EDUs by their "key". Keyed EDUs are EDUs that get clobbered
         # based on their key (e.g. typing events by room_id)
         # Map of (edu_type, key) -> Edu
-        self._pending_edus_keyed = {}   # type: dict[tuple[str, str], Edu]
+        self._pending_edus_keyed = {}  # type: dict[tuple[str, str], Edu]
 
         # Map of user_id -> UserPresenceState of pending presence to be sent to this
         # destination
-        self._pending_presence = {}   # type: dict[str, UserPresenceState]
+        self._pending_presence = {}  # type: dict[str, UserPresenceState]
 
         # room_id -> receipt_type -> user_id -> receipt_dict
         self._pending_rrs = {}
@@ -120,9 +123,7 @@ class PerDestinationQueue(object):
         Args:
             states (iterable[UserPresenceState]): presence to send
         """
-        self._pending_presence.update({
-            state.user_id: state for state in states
-        })
+        self._pending_presence.update({state.user_id: state for state in states})
         self.attempt_new_transaction()
 
     def queue_read_receipt(self, receipt):
@@ -132,14 +133,9 @@ class PerDestinationQueue(object):
         Args:
             receipt (synapse.api.receipt_info.ReceiptInfo): receipt to be queued
         """
-        self._pending_rrs.setdefault(
-            receipt.room_id, {},
-        ).setdefault(
+        self._pending_rrs.setdefault(receipt.room_id, {}).setdefault(
             receipt.receipt_type, {}
-        )[receipt.user_id] = {
-            "event_ids": receipt.event_ids,
-            "data": receipt.data,
-        }
+        )[receipt.user_id] = {"event_ids": receipt.event_ids, "data": receipt.data}
 
     def flush_read_receipts_for_room(self, room_id):
         # if we don't have any read-receipts for this room, it may be that we've already
@@ -170,10 +166,7 @@ class PerDestinationQueue(object):
             # request at which point pending_pdus just keeps growing.
             # we need application-layer timeouts of some flavour of these
             # requests
-            logger.debug(
-                "TX [%s] Transaction already in progress",
-                self._destination
-            )
+            logger.debug("TX [%s] Transaction already in progress", self._destination)
             return
 
         logger.debug("TX [%s] Starting transaction loop", self._destination)
@@ -196,10 +189,21 @@ class PerDestinationQueue(object):
 
             pending_pdus = []
             while True:
-                device_message_edus, device_stream_id, dev_list_id = (
-                    yield self._get_new_device_messages()
+                # We have to keep 2 free slots for presence and rr_edus
+                limit = MAX_EDUS_PER_TRANSACTION - 2
+
+                device_update_edus, dev_list_id = (
+                    yield self._get_device_update_edus(limit)
                 )
 
+                limit -= len(device_update_edus)
+
+                to_device_edus, device_stream_id = (
+                    yield self._get_to_device_message_edus(limit)
+                )
+
+                pending_edus = device_update_edus + to_device_edus
+
                 # BEGIN CRITICAL SECTION
                 #
                 # In order to avoid a race condition, we need to make sure that
@@ -214,21 +218,7 @@ class PerDestinationQueue(object):
                 # We can only include at most 50 PDUs per transactions
                 pending_pdus, self._pending_pdus = pending_pdus[:50], pending_pdus[50:]
 
-                pending_edus = []
-
                 pending_edus.extend(self._get_rr_edus(force_flush=False))
-
-                # We can only include at most 100 EDUs per transactions
-                pending_edus.extend(self._pop_pending_edus(100 - len(pending_edus)))
-
-                pending_edus.extend(
-                    self._pending_edus_keyed.values()
-                )
-
-                self._pending_edus_keyed = {}
-
-                pending_edus.extend(device_message_edus)
-
                 pending_presence = self._pending_presence
                 self._pending_presence = {}
                 if pending_presence:
@@ -248,9 +238,22 @@ class PerDestinationQueue(object):
                         )
                     )
 
+                pending_edus.extend(
+                    self._pop_pending_edus(MAX_EDUS_PER_TRANSACTION - len(pending_edus))
+                )
+                while (
+                    len(pending_edus) < MAX_EDUS_PER_TRANSACTION
+                    and self._pending_edus_keyed
+                ):
+                    _, val = self._pending_edus_keyed.popitem()
+                    pending_edus.append(val)
+
                 if pending_pdus:
-                    logger.debug("TX [%s] len(pending_pdus_by_dest[dest]) = %d",
-                                 self._destination, len(pending_pdus))
+                    logger.debug(
+                        "TX [%s] len(pending_pdus_by_dest[dest]) = %d",
+                        self._destination,
+                        len(pending_pdus),
+                    )
 
                 if not pending_pdus and not pending_edus:
                     logger.debug("TX [%s] Nothing to send", self._destination)
@@ -259,7 +262,7 @@ class PerDestinationQueue(object):
 
                 # if we've decided to send a transaction anyway, and we have room, we
                 # may as well send any pending RRs
-                if len(pending_edus) < 100:
+                if len(pending_edus) < MAX_EDUS_PER_TRANSACTION:
                     pending_edus.extend(self._get_rr_edus(force_flush=True))
 
                 # END CRITICAL SECTION
@@ -274,10 +277,13 @@ class PerDestinationQueue(object):
                         sent_edus_by_type.labels(edu.edu_type).inc()
                     # Remove the acknowledged device messages from the database
                     # Only bother if we actually sent some device messages
-                    if device_message_edus:
+                    if to_device_edus:
                         yield self._store.delete_device_msgs_for_remote(
                             self._destination, device_stream_id
                         )
+
+                    # also mark the device updates as sent
+                    if device_update_edus:
                         logger.info(
                             "Marking as sent %r %r", self._destination, dev_list_id
                         )
@@ -303,22 +309,25 @@ class PerDestinationQueue(object):
         except HttpResponseException as e:
             logger.warning(
                 "TX [%s] Received %d response to transaction: %s",
-                self._destination, e.code, e,
+                self._destination,
+                e.code,
+                e,
             )
         except RequestSendFailed as e:
-            logger.warning("TX [%s] Failed to send transaction: %s", self._destination, e)
+            logger.warning(
+                "TX [%s] Failed to send transaction: %s", self._destination, e
+            )
 
             for p, _ in pending_pdus:
-                logger.info("Failed to send event %s to %s", p.event_id,
-                            self._destination)
+                logger.info(
+                    "Failed to send event %s to %s", p.event_id, self._destination
+                )
         except Exception:
-            logger.exception(
-                "TX [%s] Failed to send transaction",
-                self._destination,
-            )
+            logger.exception("TX [%s] Failed to send transaction", self._destination)
             for p, _ in pending_pdus:
-                logger.info("Failed to send event %s to %s", p.event_id,
-                            self._destination)
+                logger.info(
+                    "Failed to send event %s to %s", p.event_id, self._destination
+                )
         finally:
             # We want to be *very* sure we clear this after we stop processing
             self.transmission_loop_running = False
@@ -346,11 +355,36 @@ class PerDestinationQueue(object):
         return pending_edus
 
     @defer.inlineCallbacks
-    def _get_new_device_messages(self):
+    def _get_device_update_edus(self, limit):
+        last_device_list = self._last_device_list_stream_id
+
+        # Retrieve list of new device updates to send to the destination
+        now_stream_id, results = yield self._store.get_devices_by_remote(
+            self._destination, last_device_list, limit=limit,
+        )
+        edus = [
+            Edu(
+                origin=self._server_name,
+                destination=self._destination,
+                edu_type="m.device_list_update",
+                content=content,
+            )
+            for content in results
+        ]
+
+        assert len(edus) <= limit, "get_devices_by_remote returned too many EDUs"
+
+        defer.returnValue((edus, now_stream_id))
+
+    @defer.inlineCallbacks
+    def _get_to_device_message_edus(self, limit):
         last_device_stream_id = self._last_device_stream_id
         to_device_stream_id = self._store.get_to_device_stream_token()
         contents, stream_id = yield self._store.get_new_device_msgs_for_remote(
-            self._destination, last_device_stream_id, to_device_stream_id
+            self._destination,
+            last_device_stream_id,
+            to_device_stream_id,
+            limit,
         )
         edus = [
             Edu(
@@ -362,17 +396,4 @@ class PerDestinationQueue(object):
             for content in contents
         ]
 
-        last_device_list = self._last_device_list_stream_id
-        now_stream_id, results = yield self._store.get_devices_by_remote(
-            self._destination, last_device_list
-        )
-        edus.extend(
-            Edu(
-                origin=self._server_name,
-                destination=self._destination,
-                edu_type="m.device_list_update",
-                content=content,
-            )
-            for content in results
-        )
-        defer.returnValue((edus, stream_id, now_stream_id))
+        defer.returnValue((edus, stream_id))
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 452599e1a1..949a5fb2aa 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -23,7 +23,11 @@ from twisted.internet import defer
 import synapse
 from synapse.api.errors import Codes, FederationDeniedError, SynapseError
 from synapse.api.room_versions import RoomVersions
-from synapse.api.urls import FEDERATION_V1_PREFIX, FEDERATION_V2_PREFIX
+from synapse.api.urls import (
+    FEDERATION_UNSTABLE_PREFIX,
+    FEDERATION_V1_PREFIX,
+    FEDERATION_V2_PREFIX,
+)
 from synapse.http.endpoint import parse_and_validate_server_name
 from synapse.http.server import JsonResource
 from synapse.http.servlet import (
@@ -63,11 +67,7 @@ class TransportLayerServer(JsonResource):
         self.authenticator = Authenticator(hs)
         self.ratelimiter = FederationRateLimiter(
             self.clock,
-            window_size=hs.config.federation_rc_window_size,
-            sleep_limit=hs.config.federation_rc_sleep_limit,
-            sleep_msec=hs.config.federation_rc_sleep_delay,
-            reject_limit=hs.config.federation_rc_reject_limit,
-            concurrent_requests=hs.config.federation_rc_concurrent,
+            config=hs.config.rc_federation,
         )
 
         self.register_servlets()
@@ -94,6 +94,7 @@ class NoAuthenticationError(AuthenticationError):
 
 class Authenticator(object):
     def __init__(self, hs):
+        self._clock = hs.get_clock()
         self.keyring = hs.get_keyring()
         self.server_name = hs.hostname
         self.store = hs.get_datastore()
@@ -102,6 +103,7 @@ class Authenticator(object):
     # A method just so we can pass 'self' as the authenticator to the Servlets
     @defer.inlineCallbacks
     def authenticate_request(self, request, content):
+        now = self._clock.time_msec()
         json_request = {
             "method": request.method.decode('ascii'),
             "uri": request.uri.decode('ascii'),
@@ -138,7 +140,9 @@ class Authenticator(object):
                 401, "Missing Authorization headers", Codes.UNAUTHORIZED,
             )
 
-        yield self.keyring.verify_json_for_server(origin, json_request)
+        yield self.keyring.verify_json_for_server(
+            origin, json_request, now, "Incoming request"
+        )
 
         logger.info("Request from %s", origin)
         request.authenticated_entity = origin
@@ -716,8 +720,17 @@ class PublicRoomList(BaseFederationServlet):
 
     PATH = "/publicRooms"
 
+    def __init__(self, handler, authenticator, ratelimiter, server_name, deny_access):
+        super(PublicRoomList, self).__init__(
+            handler, authenticator, ratelimiter, server_name,
+        )
+        self.deny_access = deny_access
+
     @defer.inlineCallbacks
     def on_GET(self, origin, content, query):
+        if self.deny_access:
+            raise FederationDeniedError(origin)
+
         limit = parse_integer_from_args(query, "limit", 0)
         since_token = parse_string_from_args(query, "since", None)
         include_all_networks = parse_boolean_from_args(
@@ -1299,6 +1312,30 @@ class FederationGroupsSettingJoinPolicyServlet(BaseFederationServlet):
         defer.returnValue((200, new_content))
 
 
+class RoomComplexityServlet(BaseFederationServlet):
+    """
+    Indicates to other servers how complex (and therefore likely
+    resource-intensive) a public room this server knows about is.
+    """
+    PATH = "/rooms/(?P<room_id>[^/]*)/complexity"
+    PREFIX = FEDERATION_UNSTABLE_PREFIX
+
+    @defer.inlineCallbacks
+    def on_GET(self, origin, content, query, room_id):
+
+        store = self.handler.hs.get_datastore()
+
+        is_public = yield store.is_room_world_readable_or_publicly_joinable(
+            room_id
+        )
+
+        if not is_public:
+            raise SynapseError(404, "Room not found", errcode=Codes.INVALID_PARAM)
+
+        complexity = yield store.get_room_complexity(room_id)
+        defer.returnValue((200, complexity))
+
+
 FEDERATION_SERVLET_CLASSES = (
     FederationSendServlet,
     FederationEventServlet,
@@ -1322,6 +1359,7 @@ FEDERATION_SERVLET_CLASSES = (
     FederationThirdPartyInviteExchangeServlet,
     On3pidBindServlet,
     FederationVersionServlet,
+    RoomComplexityServlet,
 )
 
 OPENID_SERVLET_CLASSES = (
@@ -1417,6 +1455,7 @@ def register_servlets(hs, resource, authenticator, ratelimiter, servlet_groups=N
                 authenticator=authenticator,
                 ratelimiter=ratelimiter,
                 server_name=hs.hostname,
+                deny_access=hs.config.restrict_public_rooms_to_local_users,
             ).register(resource)
 
     if "group_server" in servlet_groups:
diff --git a/synapse/groups/attestations.py b/synapse/groups/attestations.py
index 786149be65..3ba74001d8 100644
--- a/synapse/groups/attestations.py
+++ b/synapse/groups/attestations.py
@@ -42,7 +42,7 @@ from signedjson.sign import sign_json
 
 from twisted.internet import defer
 
-from synapse.api.errors import RequestSendFailed, SynapseError
+from synapse.api.errors import HttpResponseException, RequestSendFailed, SynapseError
 from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.types import get_domain_from_id
 from synapse.util.logcontext import run_in_background
@@ -97,10 +97,13 @@ class GroupAttestationSigning(object):
 
         # TODO: We also want to check that *new* attestations that people give
         # us to store are valid for at least a little while.
-        if valid_until_ms < self.clock.time_msec():
+        now = self.clock.time_msec()
+        if valid_until_ms < now:
             raise SynapseError(400, "Attestation expired")
 
-        yield self.keyring.verify_json_for_server(server_name, attestation)
+        yield self.keyring.verify_json_for_server(
+            server_name, attestation, now, "Group attestation"
+        )
 
     def create_attestation(self, group_id, user_id):
         """Create an attestation for the group_id and user_id with default
@@ -129,9 +132,10 @@ class GroupAttestionRenewer(object):
         self.is_mine_id = hs.is_mine_id
         self.attestations = hs.get_groups_attestation_signing()
 
-        self._renew_attestations_loop = self.clock.looping_call(
-            self._start_renew_attestations, 30 * 60 * 1000,
-        )
+        if not hs.config.worker_app:
+            self._renew_attestations_loop = self.clock.looping_call(
+                self._start_renew_attestations, 30 * 60 * 1000,
+            )
 
     @defer.inlineCallbacks
     def on_renew_attestation(self, group_id, user_id, content):
@@ -191,7 +195,7 @@ class GroupAttestionRenewer(object):
                 yield self.store.update_attestation_renewal(
                     group_id, user_id, attestation
                 )
-            except RequestSendFailed as e:
+            except (RequestSendFailed, HttpResponseException) as e:
                 logger.warning(
                     "Failed to renew attestation of %r in %r: %s",
                     user_id, group_id, e,
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index ac09d03ba9..dca337ec61 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -90,8 +90,8 @@ class BaseHandler(object):
             messages_per_second = override.messages_per_second
             burst_count = override.burst_count
         else:
-            messages_per_second = self.hs.config.rc_messages_per_second
-            burst_count = self.hs.config.rc_message_burst_count
+            messages_per_second = self.hs.config.rc_message.per_second
+            burst_count = self.hs.config.rc_message.burst_count
 
         allowed, time_allowed = self.ratelimiter.can_do_action(
             user_id, time_now,
diff --git a/synapse/handlers/account_validity.py b/synapse/handlers/account_validity.py
new file mode 100644
index 0000000000..5e0b92eb1c
--- /dev/null
+++ b/synapse/handlers/account_validity.py
@@ -0,0 +1,256 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import email.mime.multipart
+import email.utils
+import logging
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+
+from twisted.internet import defer
+
+from synapse.api.errors import StoreError
+from synapse.types import UserID
+from synapse.util import stringutils
+from synapse.util.logcontext import make_deferred_yieldable
+
+try:
+    from synapse.push.mailer import load_jinja2_templates
+except ImportError:
+    load_jinja2_templates = None
+
+logger = logging.getLogger(__name__)
+
+
+class AccountValidityHandler(object):
+    def __init__(self, hs):
+        self.hs = hs
+        self.store = self.hs.get_datastore()
+        self.sendmail = self.hs.get_sendmail()
+        self.clock = self.hs.get_clock()
+
+        self._account_validity = self.hs.config.account_validity
+
+        if self._account_validity.renew_by_email_enabled and load_jinja2_templates:
+            # Don't do email-specific configuration if renewal by email is disabled.
+            try:
+                app_name = self.hs.config.email_app_name
+
+                self._subject = self._account_validity.renew_email_subject % {
+                    "app": app_name,
+                }
+
+                self._from_string = self.hs.config.email_notif_from % {
+                    "app": app_name,
+                }
+            except Exception:
+                # If substitution failed, fall back to the bare strings.
+                self._subject = self._account_validity.renew_email_subject
+                self._from_string = self.hs.config.email_notif_from
+
+            self._raw_from = email.utils.parseaddr(self._from_string)[1]
+
+            self._template_html, self._template_text = load_jinja2_templates(
+                config=self.hs.config,
+                template_html_name=self.hs.config.email_expiry_template_html,
+                template_text_name=self.hs.config.email_expiry_template_text,
+            )
+
+            # Check the renewal emails to send and send them every 30min.
+            self.clock.looping_call(
+                self.send_renewal_emails,
+                30 * 60 * 1000,
+            )
+
+    @defer.inlineCallbacks
+    def send_renewal_emails(self):
+        """Gets the list of users whose account is expiring in the amount of time
+        configured in the ``renew_at`` parameter from the ``account_validity``
+        configuration, and sends renewal emails to all of these users as long as they
+        have an email 3PID attached to their account.
+        """
+        expiring_users = yield self.store.get_users_expiring_soon()
+
+        if expiring_users:
+            for user in expiring_users:
+                yield self._send_renewal_email(
+                    user_id=user["user_id"],
+                    expiration_ts=user["expiration_ts_ms"],
+                )
+
+    @defer.inlineCallbacks
+    def send_renewal_email_to_user(self, user_id):
+        expiration_ts = yield self.store.get_expiration_ts_for_user(user_id)
+        yield self._send_renewal_email(user_id, expiration_ts)
+
+    @defer.inlineCallbacks
+    def _send_renewal_email(self, user_id, expiration_ts):
+        """Sends out a renewal email to every email address attached to the given user
+        with a unique link allowing them to renew their account.
+
+        Args:
+            user_id (str): ID of the user to send email(s) to.
+            expiration_ts (int): Timestamp in milliseconds for the expiration date of
+                this user's account (used in the email templates).
+        """
+        addresses = yield self._get_email_addresses_for_user(user_id)
+
+        # Stop right here if the user doesn't have at least one email address.
+        # In this case, they will have to ask their server admin to renew their
+        # account manually.
+        # We don't need to do a specific check to make sure the account isn't
+        # deactivated, as a deactivated account isn't supposed to have any
+        # email address attached to it.
+        if not addresses:
+            return
+
+        try:
+            user_display_name = yield self.store.get_profile_displayname(
+                UserID.from_string(user_id).localpart
+            )
+            if user_display_name is None:
+                user_display_name = user_id
+        except StoreError:
+            user_display_name = user_id
+
+        renewal_token = yield self._get_renewal_token(user_id)
+        url = "%s_matrix/client/unstable/account_validity/renew?token=%s" % (
+            self.hs.config.public_baseurl,
+            renewal_token,
+        )
+
+        template_vars = {
+            "display_name": user_display_name,
+            "expiration_ts": expiration_ts,
+            "url": url,
+        }
+
+        html_text = self._template_html.render(**template_vars)
+        html_part = MIMEText(html_text, "html", "utf8")
+
+        plain_text = self._template_text.render(**template_vars)
+        text_part = MIMEText(plain_text, "plain", "utf8")
+
+        for address in addresses:
+            raw_to = email.utils.parseaddr(address)[1]
+
+            multipart_msg = MIMEMultipart('alternative')
+            multipart_msg['Subject'] = self._subject
+            multipart_msg['From'] = self._from_string
+            multipart_msg['To'] = address
+            multipart_msg['Date'] = email.utils.formatdate()
+            multipart_msg['Message-ID'] = email.utils.make_msgid()
+            multipart_msg.attach(text_part)
+            multipart_msg.attach(html_part)
+
+            logger.info("Sending renewal email to %s", address)
+
+            yield make_deferred_yieldable(self.sendmail(
+                self.hs.config.email_smtp_host,
+                self._raw_from, raw_to, multipart_msg.as_string().encode('utf8'),
+                reactor=self.hs.get_reactor(),
+                port=self.hs.config.email_smtp_port,
+                requireAuthentication=self.hs.config.email_smtp_user is not None,
+                username=self.hs.config.email_smtp_user,
+                password=self.hs.config.email_smtp_pass,
+                requireTransportSecurity=self.hs.config.require_transport_security
+            ))
+
+        yield self.store.set_renewal_mail_status(
+            user_id=user_id,
+            email_sent=True,
+        )
+
+    @defer.inlineCallbacks
+    def _get_email_addresses_for_user(self, user_id):
+        """Retrieve the list of email addresses attached to a user's account.
+
+        Args:
+            user_id (str): ID of the user to lookup email addresses for.
+
+        Returns:
+            defer.Deferred[list[str]]: Email addresses for this account.
+        """
+        threepids = yield self.store.user_get_threepids(user_id)
+
+        addresses = []
+        for threepid in threepids:
+            if threepid["medium"] == "email":
+                addresses.append(threepid["address"])
+
+        defer.returnValue(addresses)
+
+    @defer.inlineCallbacks
+    def _get_renewal_token(self, user_id):
+        """Generates a 32-byte long random string that will be inserted into the
+        user's renewal email's unique link, then saves it into the database.
+
+        Args:
+            user_id (str): ID of the user to generate a string for.
+
+        Returns:
+            defer.Deferred[str]: The generated string.
+
+        Raises:
+            StoreError(500): Couldn't generate a unique string after 5 attempts.
+        """
+        attempts = 0
+        while attempts < 5:
+            try:
+                renewal_token = stringutils.random_string(32)
+                yield self.store.set_renewal_token_for_user(user_id, renewal_token)
+                defer.returnValue(renewal_token)
+            except StoreError:
+                attempts += 1
+        raise StoreError(500, "Couldn't generate a unique string as refresh string.")
+
+    @defer.inlineCallbacks
+    def renew_account(self, renewal_token):
+        """Renews the account attached to a given renewal token by pushing back the
+        expiration date by the current validity period in the server's configuration.
+
+        Args:
+            renewal_token (str): Token sent with the renewal request.
+        """
+        user_id = yield self.store.get_user_from_renewal_token(renewal_token)
+        logger.debug("Renewing an account for user %s", user_id)
+        yield self.renew_account_for_user(user_id)
+
+    @defer.inlineCallbacks
+    def renew_account_for_user(self, user_id, expiration_ts=None, email_sent=False):
+        """Renews the account attached to a given user by pushing back the
+        expiration date by the current validity period in the server's
+        configuration.
+
+        Args:
+            renewal_token (str): Token sent with the renewal request.
+            expiration_ts (int): New expiration date. Defaults to now + validity period.
+            email_sent (bool): Whether an email has been sent for this validity period.
+                Defaults to False.
+
+        Returns:
+            defer.Deferred[int]: New expiration date for this account, as a timestamp
+                in milliseconds since epoch.
+        """
+        if expiration_ts is None:
+            expiration_ts = self.clock.time_msec() + self._account_validity.period
+
+        yield self.store.set_account_validity_for_user(
+            user_id=user_id,
+            expiration_ts=expiration_ts,
+            email_sent=email_sent,
+        )
+
+        defer.returnValue(expiration_ts)
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index aa5d89a9ac..a0cf37a9f9 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -162,7 +162,7 @@ class AuthHandler(BaseHandler):
         defer.returnValue(params)
 
     @defer.inlineCallbacks
-    def check_auth(self, flows, clientdict, clientip):
+    def check_auth(self, flows, clientdict, clientip, password_servlet=False):
         """
         Takes a dictionary sent by the client in the login / registration
         protocol and handles the User-Interactive Auth flow.
@@ -186,6 +186,16 @@ class AuthHandler(BaseHandler):
 
             clientip (str): The IP address of the client.
 
+            password_servlet (bool): Whether the request originated from
+                PasswordRestServlet.
+                XXX: This is a temporary hack to distinguish between checking
+                for threepid validations locally (in the case of password
+                resets) and using the identity server (in the case of binding
+                a 3PID during registration). Once we start using the
+                homeserver for both tasks, this distinction will no longer be
+                necessary.
+
+
         Returns:
             defer.Deferred[dict, dict, str]: a deferred tuple of
                 (creds, params, session_id).
@@ -241,7 +251,9 @@ class AuthHandler(BaseHandler):
         if 'type' in authdict:
             login_type = authdict['type']
             try:
-                result = yield self._check_auth_dict(authdict, clientip)
+                result = yield self._check_auth_dict(
+                    authdict, clientip, password_servlet=password_servlet,
+                )
                 if result:
                     creds[login_type] = result
                     self._save_session(session)
@@ -351,7 +363,7 @@ class AuthHandler(BaseHandler):
         return sess.setdefault('serverdict', {}).get(key, default)
 
     @defer.inlineCallbacks
-    def _check_auth_dict(self, authdict, clientip):
+    def _check_auth_dict(self, authdict, clientip, password_servlet=False):
         """Attempt to validate the auth dict provided by a client
 
         Args:
@@ -369,7 +381,13 @@ class AuthHandler(BaseHandler):
         login_type = authdict['type']
         checker = self.checkers.get(login_type)
         if checker is not None:
-            res = yield checker(authdict, clientip)
+            # XXX: Temporary workaround for having Synapse handle password resets
+            # See AuthHandler.check_auth for further details
+            res = yield checker(
+                authdict,
+                clientip=clientip,
+                password_servlet=password_servlet,
+            )
             defer.returnValue(res)
 
         # build a v1-login-style dict out of the authdict and fall back to the
@@ -383,7 +401,7 @@ class AuthHandler(BaseHandler):
         defer.returnValue(canonical_id)
 
     @defer.inlineCallbacks
-    def _check_recaptcha(self, authdict, clientip):
+    def _check_recaptcha(self, authdict, clientip, **kwargs):
         try:
             user_response = authdict["response"]
         except KeyError:
@@ -429,20 +447,20 @@ class AuthHandler(BaseHandler):
                 defer.returnValue(True)
         raise LoginError(401, "", errcode=Codes.UNAUTHORIZED)
 
-    def _check_email_identity(self, authdict, _):
-        return self._check_threepid('email', authdict)
+    def _check_email_identity(self, authdict, **kwargs):
+        return self._check_threepid('email', authdict, **kwargs)
 
-    def _check_msisdn(self, authdict, _):
+    def _check_msisdn(self, authdict, **kwargs):
         return self._check_threepid('msisdn', authdict)
 
-    def _check_dummy_auth(self, authdict, _):
+    def _check_dummy_auth(self, authdict, **kwargs):
         return defer.succeed(True)
 
-    def _check_terms_auth(self, authdict, _):
+    def _check_terms_auth(self, authdict, **kwargs):
         return defer.succeed(True)
 
     @defer.inlineCallbacks
-    def _check_threepid(self, medium, authdict):
+    def _check_threepid(self, medium, authdict, password_servlet=False, **kwargs):
         if 'threepid_creds' not in authdict:
             raise LoginError(400, "Missing threepid_creds", Codes.MISSING_PARAM)
 
@@ -451,7 +469,30 @@ class AuthHandler(BaseHandler):
         identity_handler = self.hs.get_handlers().identity_handler
 
         logger.info("Getting validated threepid. threepidcreds: %r", (threepid_creds,))
-        threepid = yield identity_handler.threepid_from_creds(threepid_creds)
+        if (
+            not password_servlet
+            or self.hs.config.email_password_reset_behaviour == "remote"
+        ):
+            threepid = yield identity_handler.threepid_from_creds(threepid_creds)
+        elif self.hs.config.email_password_reset_behaviour == "local":
+            row = yield self.store.get_threepid_validation_session(
+                medium,
+                threepid_creds["client_secret"],
+                sid=threepid_creds["sid"],
+                validated=True,
+            )
+
+            threepid = {
+                "medium": row["medium"],
+                "address": row["address"],
+                "validated_at": row["validated_at"],
+            } if row else None
+
+            if row:
+                # Valid threepid returned, delete from the db
+                yield self.store.delete_threepid_session(threepid_creds["sid"])
+        else:
+            raise SynapseError(400, "Password resets are not enabled on this homeserver")
 
         if not threepid:
             raise LoginError(401, "", errcode=Codes.UNAUTHORIZED)
diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py
index 6a91f7698e..7378b56c1d 100644
--- a/synapse/handlers/deactivate_account.py
+++ b/synapse/handlers/deactivate_account.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2017, 2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -42,6 +43,8 @@ class DeactivateAccountHandler(BaseHandler):
         # it left off (if it has work left to do).
         hs.get_reactor().callWhenRunning(self._start_user_parting)
 
+        self._account_validity_enabled = hs.config.account_validity.enabled
+
     @defer.inlineCallbacks
     def deactivate_account(self, user_id, erase_data, id_server=None):
         """Deactivate a user's account
@@ -114,6 +117,13 @@ class DeactivateAccountHandler(BaseHandler):
         # parts users from rooms (if it isn't already running)
         self._start_user_parting()
 
+        # Remove all information on the user from the account_validity table.
+        if self._account_validity_enabled:
+            yield self.store.delete_account_validity_for_user(user_id)
+
+        # Mark the user as deactivated.
+        yield self.store.set_user_deactivated_status(user_id, True)
+
         defer.returnValue(identity_server_supports_unbinding)
 
     def _start_user_parting(self):
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index 27bd06df5d..a12f9508d8 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -19,7 +19,7 @@ import string
 
 from twisted.internet import defer
 
-from synapse.api.constants import EventTypes
+from synapse.api.constants import MAX_ALIAS_LENGTH, EventTypes
 from synapse.api.errors import (
     AuthError,
     CodeMessageException,
@@ -43,8 +43,10 @@ class DirectoryHandler(BaseHandler):
         self.state = hs.get_state_handler()
         self.appservice_handler = hs.get_application_service_handler()
         self.event_creation_handler = hs.get_event_creation_handler()
+        self.store = hs.get_datastore()
         self.config = hs.config
         self.enable_room_list_search = hs.config.enable_room_list_search
+        self.require_membership = hs.config.require_membership_for_aliases
 
         self.federation = hs.get_federation_client()
         hs.get_federation_registry().register_query_handler(
@@ -83,7 +85,7 @@ class DirectoryHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def create_association(self, requester, room_alias, room_id, servers=None,
-                           send_event=True):
+                           send_event=True, check_membership=True):
         """Attempt to create a new alias
 
         Args:
@@ -93,6 +95,8 @@ class DirectoryHandler(BaseHandler):
             servers (list[str]|None): List of servers that others servers
                 should try and join via
             send_event (bool): Whether to send an updated m.room.aliases event
+            check_membership (bool): Whether to check if the user is in the room
+                before the alias can be set (if the server's config requires it).
 
         Returns:
             Deferred
@@ -100,6 +104,13 @@ class DirectoryHandler(BaseHandler):
 
         user_id = requester.user.to_string()
 
+        if len(room_alias.to_string()) > MAX_ALIAS_LENGTH:
+            raise SynapseError(
+                400,
+                "Can't create aliases longer than %s characters" % MAX_ALIAS_LENGTH,
+                Codes.INVALID_PARAM,
+            )
+
         service = requester.app_service
         if service:
             if not service.is_interested_in_alias(room_alias.to_string()):
@@ -108,6 +119,14 @@ class DirectoryHandler(BaseHandler):
                     " this kind of alias.", errcode=Codes.EXCLUSIVE
                 )
         else:
+            if self.require_membership and check_membership:
+                rooms_for_user = yield self.store.get_rooms_for_user(user_id)
+                if room_id not in rooms_for_user:
+                    raise AuthError(
+                        403,
+                        "You must be in the room to create an alias for it",
+                    )
+
             if not self.spam_checker.user_may_create_room_alias(user_id, room_alias):
                 raise AuthError(
                     403, "This user is not permitted to create this alias",
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index 1b4d8c74ae..eb525070cf 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -21,7 +21,6 @@ from twisted.internet import defer
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import AuthError, SynapseError
 from synapse.events import EventBase
-from synapse.events.utils import serialize_event
 from synapse.types import UserID
 from synapse.util.logutils import log_function
 from synapse.visibility import filter_events_for_client
@@ -50,6 +49,7 @@ class EventStreamHandler(BaseHandler):
         self.notifier = hs.get_notifier()
         self.state = hs.get_state_handler()
         self._server_notices_sender = hs.get_server_notices_sender()
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     @log_function
@@ -120,9 +120,12 @@ class EventStreamHandler(BaseHandler):
 
             time_now = self.clock.time_msec()
 
-            chunks = [
-                serialize_event(e, time_now, as_client_event) for e in events
-            ]
+            chunks = yield self._event_serializer.serialize_events(
+                events, time_now, as_client_event=as_client_event,
+                # We don't bundle "live" events, as otherwise clients
+                # will end up double counting annotations.
+                bundle_aggregations=False,
+            )
 
             chunk = {
                 "chunk": chunks,
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index ade47710e7..51d7eb274b 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018, 2019 New Vector Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -33,8 +34,10 @@ from synapse.api.constants import EventTypes, Membership, RejectedReason
 from synapse.api.errors import (
     AuthError,
     CodeMessageException,
+    Codes,
     FederationDeniedError,
     FederationError,
+    RequestSendFailed,
     StoreError,
     SynapseError,
 )
@@ -126,6 +129,8 @@ class FederationHandler(BaseHandler):
         self.room_queues = {}
         self._room_pdu_linearizer = Linearizer("fed_room_pdu")
 
+        self.third_party_event_rules = hs.get_third_party_event_rules()
+
     @defer.inlineCallbacks
     def on_receive_pdu(
             self, origin, pdu, sent_to_us_directly=False,
@@ -1257,6 +1262,15 @@ class FederationHandler(BaseHandler):
             logger.warn("Failed to create join %r because %s", event, e)
             raise e
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            logger.info("Creation of join %s forbidden by third-party rules", event)
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         # The remote hasn't signed it yet, obviously. We'll do the full checks
         # when we get the event back in `on_send_join_request`
         yield self.auth.check_from_context(
@@ -1299,6 +1313,15 @@ class FederationHandler(BaseHandler):
             origin, event
         )
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            logger.info("Sending of join %s forbidden by third-party rules", event)
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         logger.debug(
             "on_send_join_request: After _handle_new_event: %s, sigs: %s",
             event.event_id,
@@ -1457,6 +1480,15 @@ class FederationHandler(BaseHandler):
             builder=builder,
         )
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            logger.warning("Creation of leave %s forbidden by third-party rules", event)
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         try:
             # The remote hasn't signed it yet, obviously. We'll do the full checks
             # when we get the event back in `on_send_leave_request`
@@ -1483,10 +1515,19 @@ class FederationHandler(BaseHandler):
 
         event.internal_metadata.outlier = False
 
-        yield self._handle_new_event(
+        context = yield self._handle_new_event(
             origin, event
         )
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            logger.info("Sending of leave %s forbidden by third-party rules", event)
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         logger.debug(
             "on_send_leave_request: After _handle_new_event: %s, sigs: %s",
             event.event_id,
@@ -1916,6 +1957,11 @@ class FederationHandler(BaseHandler):
                     event.room_id, latest_event_ids=extrem_ids,
                 )
 
+            logger.debug(
+                "Doing soft-fail check for %s: state %s",
+                event.event_id, current_state_ids,
+            )
+
             # Now check if event pass auth against said current state
             auth_types = auth_types_for_event(event)
             current_state_ids = [
@@ -1932,7 +1978,7 @@ class FederationHandler(BaseHandler):
                 self.auth.check(room_version, event, auth_events=current_auth_events)
             except AuthError as e:
                 logger.warn(
-                    "Failed current state auth resolution for %r because %s",
+                    "Soft-failing %r because %s",
                     event, e,
                 )
                 event.internal_metadata.soft_failed = True
@@ -2008,15 +2054,65 @@ class FederationHandler(BaseHandler):
 
         Args:
             origin (str):
-            event (synapse.events.FrozenEvent):
+            event (synapse.events.EventBase):
             context (synapse.events.snapshot.EventContext):
-            auth_events (dict[(str, str)->str]):
+            auth_events (dict[(str, str)->synapse.events.EventBase]):
+                Map from (event_type, state_key) to event
+
+                What we expect the event's auth_events to be, based on the event's
+                position in the dag. I think? maybe??
+
+                Also NB that this function adds entries to it.
+        Returns:
+            defer.Deferred[None]
+        """
+        room_version = yield self.store.get_room_version(event.room_id)
+
+        try:
+            yield self._update_auth_events_and_context_for_auth(
+                origin, event, context, auth_events
+            )
+        except Exception:
+            # We don't really mind if the above fails, so lets not fail
+            # processing if it does. However, it really shouldn't fail so
+            # let's still log as an exception since we'll still want to fix
+            # any bugs.
+            logger.exception(
+                "Failed to double check auth events for %s with remote. "
+                "Ignoring failure and continuing processing of event.",
+                event.event_id,
+            )
+
+        try:
+            self.auth.check(room_version, event, auth_events=auth_events)
+        except AuthError as e:
+            logger.warn("Failed auth resolution for %r because %s", event, e)
+            raise e
+
+    @defer.inlineCallbacks
+    def _update_auth_events_and_context_for_auth(
+        self, origin, event, context, auth_events
+    ):
+        """Helper for do_auth. See there for docs.
+
+        Checks whether a given event has the expected auth events. If it
+        doesn't then we talk to the remote server to compare state to see if
+        we can come to a consensus (e.g. if one server missed some valid
+        state).
+
+        This attempts to resovle any potential divergence of state between
+        servers, but is not essential and so failures should not block further
+        processing of the event.
+
+        Args:
+            origin (str):
+            event (synapse.events.EventBase):
+            context (synapse.events.snapshot.EventContext):
+            auth_events (dict[(str, str)->synapse.events.EventBase]):
 
         Returns:
             defer.Deferred[None]
         """
-        # Check if we have all the auth events.
-        current_state = set(e.event_id for e in auth_events.values())
         event_auth_events = set(event.auth_event_ids())
 
         if event.is_state():
@@ -2024,11 +2120,21 @@ class FederationHandler(BaseHandler):
         else:
             event_key = None
 
-        if event_auth_events - current_state:
+        # if the event's auth_events refers to events which are not in our
+        # calculated auth_events, we need to fetch those events from somewhere.
+        #
+        # we start by fetching them from the store, and then try calling /event_auth/.
+        missing_auth = event_auth_events.difference(
+            e.event_id for e in auth_events.values()
+        )
+
+        if missing_auth:
             # TODO: can we use store.have_seen_events here instead?
             have_events = yield self.store.get_seen_events_with_rejections(
-                event_auth_events - current_state
+                missing_auth
             )
+            logger.debug("Got events %s from store", have_events)
+            missing_auth.difference_update(have_events.keys())
         else:
             have_events = {}
 
@@ -2037,17 +2143,22 @@ class FederationHandler(BaseHandler):
             for e in auth_events.values()
         })
 
-        seen_events = set(have_events.keys())
-
-        missing_auth = event_auth_events - seen_events - current_state
-
         if missing_auth:
-            logger.info("Missing auth: %s", missing_auth)
             # If we don't have all the auth events, we need to get them.
+            logger.info(
+                "auth_events contains unknown events: %s",
+                missing_auth,
+            )
             try:
-                remote_auth_chain = yield self.federation_client.get_event_auth(
-                    origin, event.room_id, event.event_id
-                )
+                try:
+                    remote_auth_chain = yield self.federation_client.get_event_auth(
+                        origin, event.room_id, event.event_id
+                    )
+                except RequestSendFailed as e:
+                    # The other side isn't around or doesn't implement the
+                    # endpoint, so lets just bail out.
+                    logger.info("Failed to get event auth from remote: %s", e)
+                    return
 
                 seen_remotes = yield self.store.have_seen_events(
                     [e.event_id for e in remote_auth_chain]
@@ -2084,145 +2195,174 @@ class FederationHandler(BaseHandler):
                 have_events = yield self.store.get_seen_events_with_rejections(
                     event.auth_event_ids()
                 )
-                seen_events = set(have_events.keys())
             except Exception:
                 # FIXME:
                 logger.exception("Failed to get auth chain")
 
+        if event.internal_metadata.is_outlier():
+            logger.info("Skipping auth_event fetch for outlier")
+            return
+
         # FIXME: Assumes we have and stored all the state for all the
         # prev_events
-        current_state = set(e.event_id for e in auth_events.values())
-        different_auth = event_auth_events - current_state
+        different_auth = event_auth_events.difference(
+            e.event_id for e in auth_events.values()
+        )
+
+        if not different_auth:
+            return
+
+        logger.info(
+            "auth_events refers to events which are not in our calculated auth "
+            "chain: %s",
+            different_auth,
+        )
 
         room_version = yield self.store.get_room_version(event.room_id)
 
-        if different_auth and not event.internal_metadata.is_outlier():
-            # Do auth conflict res.
-            logger.info("Different auth: %s", different_auth)
-
-            different_events = yield logcontext.make_deferred_yieldable(
-                defer.gatherResults([
-                    logcontext.run_in_background(
-                        self.store.get_event,
-                        d,
-                        allow_none=True,
-                        allow_rejected=False,
-                    )
-                    for d in different_auth
-                    if d in have_events and not have_events[d]
-                ], consumeErrors=True)
-            ).addErrback(unwrapFirstError)
-
-            if different_events:
-                local_view = dict(auth_events)
-                remote_view = dict(auth_events)
-                remote_view.update({
-                    (d.type, d.state_key): d for d in different_events if d
-                })
-
-                new_state = yield self.state_handler.resolve_events(
-                    room_version,
-                    [list(local_view.values()), list(remote_view.values())],
-                    event
+        different_events = yield logcontext.make_deferred_yieldable(
+            defer.gatherResults([
+                logcontext.run_in_background(
+                    self.store.get_event,
+                    d,
+                    allow_none=True,
+                    allow_rejected=False,
                 )
+                for d in different_auth
+                if d in have_events and not have_events[d]
+            ], consumeErrors=True)
+        ).addErrback(unwrapFirstError)
 
-                auth_events.update(new_state)
+        if different_events:
+            local_view = dict(auth_events)
+            remote_view = dict(auth_events)
+            remote_view.update({
+                (d.type, d.state_key): d for d in different_events if d
+            })
 
-                current_state = set(e.event_id for e in auth_events.values())
-                different_auth = event_auth_events - current_state
+            new_state = yield self.state_handler.resolve_events(
+                room_version,
+                [list(local_view.values()), list(remote_view.values())],
+                event
+            )
 
-                yield self._update_context_for_auth_events(
-                    event, context, auth_events, event_key,
-                )
+            logger.info(
+                "After state res: updating auth_events with new state %s",
+                {
+                    (d.type, d.state_key): d.event_id for d in new_state.values()
+                    if auth_events.get((d.type, d.state_key)) != d
+                },
+            )
 
-        if different_auth and not event.internal_metadata.is_outlier():
-            logger.info("Different auth after resolution: %s", different_auth)
+            auth_events.update(new_state)
 
-            # Only do auth resolution if we have something new to say.
-            # We can't rove an auth failure.
-            do_resolution = False
+            different_auth = event_auth_events.difference(
+                e.event_id for e in auth_events.values()
+            )
 
-            provable = [
-                RejectedReason.NOT_ANCESTOR, RejectedReason.NOT_ANCESTOR,
-            ]
+            yield self._update_context_for_auth_events(
+                event, context, auth_events, event_key,
+            )
 
-            for e_id in different_auth:
-                if e_id in have_events:
-                    if have_events[e_id] in provable:
-                        do_resolution = True
-                        break
+        if not different_auth:
+            # we're done
+            return
 
-            if do_resolution:
-                prev_state_ids = yield context.get_prev_state_ids(self.store)
-                # 1. Get what we think is the auth chain.
-                auth_ids = yield self.auth.compute_auth_events(
-                    event, prev_state_ids
-                )
-                local_auth_chain = yield self.store.get_auth_chain(
-                    auth_ids, include_given=True
-                )
+        logger.info(
+            "auth_events still refers to events which are not in the calculated auth "
+            "chain after state resolution: %s",
+            different_auth,
+        )
 
-                try:
-                    # 2. Get remote difference.
-                    result = yield self.federation_client.query_auth(
-                        origin,
-                        event.room_id,
-                        event.event_id,
-                        local_auth_chain,
-                    )
+        # Only do auth resolution if we have something new to say.
+        # We can't prove an auth failure.
+        do_resolution = False
 
-                    seen_remotes = yield self.store.have_seen_events(
-                        [e.event_id for e in result["auth_chain"]]
-                    )
+        for e_id in different_auth:
+            if e_id in have_events:
+                if have_events[e_id] == RejectedReason.NOT_ANCESTOR:
+                    do_resolution = True
+                    break
 
-                    # 3. Process any remote auth chain events we haven't seen.
-                    for ev in result["auth_chain"]:
-                        if ev.event_id in seen_remotes:
-                            continue
+        if not do_resolution:
+            logger.info(
+                "Skipping auth resolution due to lack of provable rejection reasons"
+            )
+            return
 
-                        if ev.event_id == event.event_id:
-                            continue
+        logger.info("Doing auth resolution")
 
-                        try:
-                            auth_ids = ev.auth_event_ids()
-                            auth = {
-                                (e.type, e.state_key): e
-                                for e in result["auth_chain"]
-                                if e.event_id in auth_ids
-                                or event.type == EventTypes.Create
-                            }
-                            ev.internal_metadata.outlier = True
+        prev_state_ids = yield context.get_prev_state_ids(self.store)
 
-                            logger.debug(
-                                "do_auth %s different_auth: %s",
-                                event.event_id, e.event_id
-                            )
-
-                            yield self._handle_new_event(
-                                origin, ev, auth_events=auth
-                            )
-
-                            if ev.event_id in event_auth_events:
-                                auth_events[(ev.type, ev.state_key)] = ev
-                        except AuthError:
-                            pass
-
-                except Exception:
-                    # FIXME:
-                    logger.exception("Failed to query auth chain")
-
-                # 4. Look at rejects and their proofs.
-                # TODO.
-
-                yield self._update_context_for_auth_events(
-                    event, context, auth_events, event_key,
-                )
+        # 1. Get what we think is the auth chain.
+        auth_ids = yield self.auth.compute_auth_events(
+            event, prev_state_ids
+        )
+        local_auth_chain = yield self.store.get_auth_chain(
+            auth_ids, include_given=True
+        )
 
         try:
-            self.auth.check(room_version, event, auth_events=auth_events)
-        except AuthError as e:
-            logger.warn("Failed auth resolution for %r because %s", event, e)
-            raise e
+            # 2. Get remote difference.
+            try:
+                result = yield self.federation_client.query_auth(
+                    origin,
+                    event.room_id,
+                    event.event_id,
+                    local_auth_chain,
+                )
+            except RequestSendFailed as e:
+                # The other side isn't around or doesn't implement the
+                # endpoint, so lets just bail out.
+                logger.info("Failed to query auth from remote: %s", e)
+                return
+
+            seen_remotes = yield self.store.have_seen_events(
+                [e.event_id for e in result["auth_chain"]]
+            )
+
+            # 3. Process any remote auth chain events we haven't seen.
+            for ev in result["auth_chain"]:
+                if ev.event_id in seen_remotes:
+                    continue
+
+                if ev.event_id == event.event_id:
+                    continue
+
+                try:
+                    auth_ids = ev.auth_event_ids()
+                    auth = {
+                        (e.type, e.state_key): e
+                        for e in result["auth_chain"]
+                        if e.event_id in auth_ids
+                        or event.type == EventTypes.Create
+                    }
+                    ev.internal_metadata.outlier = True
+
+                    logger.debug(
+                        "do_auth %s different_auth: %s",
+                        event.event_id, e.event_id
+                    )
+
+                    yield self._handle_new_event(
+                        origin, ev, auth_events=auth
+                    )
+
+                    if ev.event_id in event_auth_events:
+                        auth_events[(ev.type, ev.state_key)] = ev
+                except AuthError:
+                    pass
+
+        except Exception:
+            # FIXME:
+            logger.exception("Failed to query auth chain")
+
+        # 4. Look at rejects and their proofs.
+        # TODO.
+
+        yield self._update_context_for_auth_events(
+            event, context, auth_events, event_key,
+        )
 
     @defer.inlineCallbacks
     def _update_context_for_auth_events(self, event, context, auth_events,
@@ -2450,6 +2590,18 @@ class FederationHandler(BaseHandler):
                 builder=builder
             )
 
+            event_allowed = yield self.third_party_event_rules.check_event_allowed(
+                event, context,
+            )
+            if not event_allowed:
+                logger.info(
+                    "Creation of threepid invite %s forbidden by third-party rules",
+                    event,
+                )
+                raise SynapseError(
+                    403, "This event is not allowed in this context", Codes.FORBIDDEN,
+                )
+
             event, context = yield self.add_display_name_to_third_party_invite(
                 room_version, event_dict, event, context
             )
@@ -2498,6 +2650,18 @@ class FederationHandler(BaseHandler):
             builder=builder,
         )
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            logger.warning(
+                "Exchange of threepid invite %s forbidden by third-party rules",
+                event,
+            )
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         event, context = yield self.add_display_name_to_third_party_invite(
             room_version, event_dict, event, context
         )
@@ -2513,12 +2677,6 @@ class FederationHandler(BaseHandler):
         # though the sender isn't a local user.
         event.internal_metadata.send_on_behalf_of = get_domain_from_id(event.sender)
 
-        # XXX we send the invite here, but send_membership_event also sends it,
-        # so we end up making two requests. I think this is redundant.
-        returned_invite = yield self.send_invite(origin, event)
-        # TODO: Make sure the signatures actually are correct.
-        event.signatures.update(returned_invite.signatures)
-
         member_handler = self.hs.get_room_member_handler()
         yield member_handler.send_membership_event(None, event, context)
 
diff --git a/synapse/handlers/groups_local.py b/synapse/handlers/groups_local.py
index 02c508acec..f60ace02e8 100644
--- a/synapse/handlers/groups_local.py
+++ b/synapse/handlers/groups_local.py
@@ -49,9 +49,7 @@ def _create_rerouter(func_name):
             def http_response_errback(failure):
                 failure.trap(HttpResponseException)
                 e = failure.value
-                if e.code == 403:
-                    raise e.to_synapse_error()
-                return failure
+                raise e.to_synapse_error()
 
             def request_failed_errback(failure):
                 failure.trap(RequestSendFailed)
diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py
index 22469486d7..04caf65793 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -247,7 +247,14 @@ class IdentityHandler(BaseHandler):
         defer.returnValue(changed)
 
     @defer.inlineCallbacks
-    def requestEmailToken(self, id_server, email, client_secret, send_attempt, **kwargs):
+    def requestEmailToken(
+        self,
+        id_server,
+        email,
+        client_secret,
+        send_attempt,
+        next_link=None,
+    ):
         if not self._should_trust_id_server(id_server):
             raise SynapseError(
                 400, "Untrusted ID server '%s'" % id_server,
@@ -259,7 +266,9 @@ class IdentityHandler(BaseHandler):
             'client_secret': client_secret,
             'send_attempt': send_attempt,
         }
-        params.update(kwargs)
+
+        if next_link:
+            params.update({'next_link': next_link})
 
         try:
             data = yield self.http_client.post_json_get_json(
diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py
index 7dfae78db0..aaee5db0b7 100644
--- a/synapse/handlers/initial_sync.py
+++ b/synapse/handlers/initial_sync.py
@@ -19,7 +19,6 @@ from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import AuthError, Codes, SynapseError
-from synapse.events.utils import serialize_event
 from synapse.events.validator import EventValidator
 from synapse.handlers.presence import format_user_presence_state
 from synapse.streams.config import PaginationConfig
@@ -43,6 +42,7 @@ class InitialSyncHandler(BaseHandler):
         self.clock = hs.get_clock()
         self.validator = EventValidator()
         self.snapshot_cache = SnapshotCache()
+        self._event_serializer = hs.get_event_client_serializer()
 
     def snapshot_all_rooms(self, user_id=None, pagin_config=None,
                            as_client_event=True, include_archived=False):
@@ -138,7 +138,9 @@ class InitialSyncHandler(BaseHandler):
                 d["inviter"] = event.sender
 
                 invite_event = yield self.store.get_event(event.event_id)
-                d["invite"] = serialize_event(invite_event, time_now, as_client_event)
+                d["invite"] = yield self._event_serializer.serialize_event(
+                    invite_event, time_now, as_client_event,
+                )
 
             rooms_ret.append(d)
 
@@ -185,18 +187,21 @@ class InitialSyncHandler(BaseHandler):
                 time_now = self.clock.time_msec()
 
                 d["messages"] = {
-                    "chunk": [
-                        serialize_event(m, time_now, as_client_event)
-                        for m in messages
-                    ],
+                    "chunk": (
+                        yield self._event_serializer.serialize_events(
+                            messages, time_now=time_now,
+                            as_client_event=as_client_event,
+                        )
+                    ),
                     "start": start_token.to_string(),
                     "end": end_token.to_string(),
                 }
 
-                d["state"] = [
-                    serialize_event(c, time_now, as_client_event)
-                    for c in current_state.values()
-                ]
+                d["state"] = yield self._event_serializer.serialize_events(
+                    current_state.values(),
+                    time_now=time_now,
+                    as_client_event=as_client_event
+                )
 
                 account_data_events = []
                 tags = tags_by_room.get(event.room_id)
@@ -337,11 +342,15 @@ class InitialSyncHandler(BaseHandler):
             "membership": membership,
             "room_id": room_id,
             "messages": {
-                "chunk": [serialize_event(m, time_now) for m in messages],
+                "chunk": (yield self._event_serializer.serialize_events(
+                    messages, time_now,
+                )),
                 "start": start_token.to_string(),
                 "end": end_token.to_string(),
             },
-            "state": [serialize_event(s, time_now) for s in room_state.values()],
+            "state": (yield self._event_serializer.serialize_events(
+                room_state.values(), time_now,
+            )),
             "presence": [],
             "receipts": [],
         })
@@ -355,10 +364,9 @@ class InitialSyncHandler(BaseHandler):
 
         # TODO: These concurrently
         time_now = self.clock.time_msec()
-        state = [
-            serialize_event(x, time_now)
-            for x in current_state.values()
-        ]
+        state = yield self._event_serializer.serialize_events(
+            current_state.values(), time_now,
+        )
 
         now_token = yield self.hs.get_event_sources().get_current_token()
 
@@ -425,7 +433,9 @@ class InitialSyncHandler(BaseHandler):
         ret = {
             "room_id": room_id,
             "messages": {
-                "chunk": [serialize_event(m, time_now) for m in messages],
+                "chunk": (yield self._event_serializer.serialize_events(
+                    messages, time_now,
+                )),
                 "start": start_token.to_string(),
                 "end": end_token.to_string(),
             },
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 224d34ef3a..11650dc80c 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
-# Copyright 2014 - 2016 OpenMarket Ltd
-# Copyright 2017 - 2018 New Vector Ltd
+# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,7 +23,7 @@ from canonicaljson import encode_canonical_json, json
 from twisted.internet import defer
 from twisted.internet.defer import succeed
 
-from synapse.api.constants import EventTypes, Membership
+from synapse.api.constants import EventTypes, Membership, RelationTypes
 from synapse.api.errors import (
     AuthError,
     Codes,
@@ -32,7 +33,6 @@ from synapse.api.errors import (
 )
 from synapse.api.room_versions import RoomVersions
 from synapse.api.urls import ConsentURIBuilder
-from synapse.events.utils import serialize_event
 from synapse.events.validator import EventValidator
 from synapse.replication.http.send_event import ReplicationSendEventRestServlet
 from synapse.storage.state import StateFilter
@@ -57,6 +57,7 @@ class MessageHandler(object):
         self.clock = hs.get_clock()
         self.state = hs.get_state_handler()
         self.store = hs.get_datastore()
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     def get_room_data(self, user_id=None, room_id=None,
@@ -164,9 +165,13 @@ class MessageHandler(object):
                 room_state = room_state[membership_event_id]
 
         now = self.clock.time_msec()
-        defer.returnValue(
-            [serialize_event(c, now) for c in room_state.values()]
+        events = yield self._event_serializer.serialize_events(
+            room_state.values(), now,
+            # We don't bother bundling aggregations in when asked for state
+            # events, as clients won't use them.
+            bundle_aggregations=False,
         )
+        defer.returnValue(events)
 
     @defer.inlineCallbacks
     def get_joined_members(self, requester, room_id):
@@ -228,6 +233,7 @@ class EventCreationHandler(object):
         self.ratelimiter = hs.get_ratelimiter()
         self.notifier = hs.get_notifier()
         self.config = hs.config
+        self.require_membership_for_aliases = hs.config.require_membership_for_aliases
 
         self.send_event_to_master = ReplicationSendEventRestServlet.make_client(hs)
 
@@ -243,6 +249,7 @@ class EventCreationHandler(object):
         self.action_generator = hs.get_action_generator()
 
         self.spam_checker = hs.get_spam_checker()
+        self.third_party_event_rules = hs.get_third_party_event_rules()
 
         self._block_events_without_consent_error = (
             self.config.block_events_without_consent_error
@@ -336,6 +343,35 @@ class EventCreationHandler(object):
             prev_events_and_hashes=prev_events_and_hashes,
         )
 
+        # In an ideal world we wouldn't need the second part of this condition. However,
+        # this behaviour isn't spec'd yet, meaning we should be able to deactivate this
+        # behaviour. Another reason is that this code is also evaluated each time a new
+        # m.room.aliases event is created, which includes hitting a /directory route.
+        # Therefore not including this condition here would render the similar one in
+        # synapse.handlers.directory pointless.
+        if builder.type == EventTypes.Aliases and self.require_membership_for_aliases:
+            # Ideally we'd do the membership check in event_auth.check(), which
+            # describes a spec'd algorithm for authenticating events received over
+            # federation as well as those created locally. As of room v3, aliases events
+            # can be created by users that are not in the room, therefore we have to
+            # tolerate them in event_auth.check().
+            prev_state_ids = yield context.get_prev_state_ids(self.store)
+            prev_event_id = prev_state_ids.get((EventTypes.Member, event.sender))
+            prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
+            if not prev_event or prev_event.membership != Membership.JOIN:
+                logger.warning(
+                    ("Attempt to send `m.room.aliases` in room %s by user %s but"
+                     " membership is %s"),
+                    event.room_id,
+                    event.sender,
+                    prev_event.membership if prev_event else None,
+                )
+
+                raise AuthError(
+                    403,
+                    "You must be in the room to create an alias for it",
+                )
+
         self.validator.validate_new(event)
 
         defer.returnValue((event, context))
@@ -570,6 +606,20 @@ class EventCreationHandler(object):
 
         self.validator.validate_new(event)
 
+        # If this event is an annotation then we check that that the sender
+        # can't annotate the same way twice (e.g. stops users from liking an
+        # event multiple times).
+        relation = event.content.get("m.relates_to", {})
+        if relation.get("rel_type") == RelationTypes.ANNOTATION:
+            relates_to = relation["event_id"]
+            aggregation_key = relation["key"]
+
+            already_exists = yield self.store.has_user_annotated_event(
+                relates_to, event.type, aggregation_key, event.sender,
+            )
+            if already_exists:
+                raise SynapseError(400, "Can't send same reaction twice")
+
         logger.debug(
             "Created event %s",
             event.event_id,
@@ -610,6 +660,14 @@ class EventCreationHandler(object):
         else:
             room_version = yield self.store.get_room_version(event.room_id)
 
+        event_allowed = yield self.third_party_event_rules.check_event_allowed(
+            event, context,
+        )
+        if not event_allowed:
+            raise SynapseError(
+                403, "This event is not allowed in this context", Codes.FORBIDDEN,
+            )
+
         try:
             yield self.auth.check_from_context(room_version, event, context)
         except AuthError as err:
diff --git a/synapse/handlers/pagination.py b/synapse/handlers/pagination.py
index e4fdae9266..8f811e24fe 100644
--- a/synapse/handlers/pagination.py
+++ b/synapse/handlers/pagination.py
@@ -20,7 +20,6 @@ from twisted.python.failure import Failure
 
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import SynapseError
-from synapse.events.utils import serialize_event
 from synapse.storage.state import StateFilter
 from synapse.types import RoomStreamToken
 from synapse.util.async_helpers import ReadWriteLock
@@ -78,6 +77,7 @@ class PaginationHandler(object):
         self._purges_in_progress_by_room = set()
         # map from purge id to PurgeStatus
         self._purges_by_id = {}
+        self._event_serializer = hs.get_event_client_serializer()
 
     def start_purge_history(self, room_id, token,
                             delete_local_events=False):
@@ -278,18 +278,22 @@ class PaginationHandler(object):
         time_now = self.clock.time_msec()
 
         chunk = {
-            "chunk": [
-                serialize_event(e, time_now, as_client_event)
-                for e in events
-            ],
+            "chunk": (
+                yield self._event_serializer.serialize_events(
+                    events, time_now,
+                    as_client_event=as_client_event,
+                )
+            ),
             "start": pagin_config.from_token.to_string(),
             "end": next_token.to_string(),
         }
 
         if state:
-            chunk["state"] = [
-                serialize_event(e, time_now, as_client_event)
-                for e in state
-            ]
+            chunk["state"] = (
+                yield self._event_serializer.serialize_events(
+                    state, time_now,
+                    as_client_event=as_client_event,
+                )
+            )
 
         defer.returnValue(chunk)
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index bd1285b15c..557fb5f83d 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -158,7 +158,13 @@ class PresenceHandler(object):
         # have not yet been persisted
         self.unpersisted_users_changes = set()
 
-        hs.get_reactor().addSystemEventTrigger("before", "shutdown", self._on_shutdown)
+        hs.get_reactor().addSystemEventTrigger(
+            "before",
+            "shutdown",
+            run_as_background_process,
+            "presence.on_shutdown",
+            self._on_shutdown,
+        )
 
         self.serial_to_user = {}
         self._next_serial = 1
@@ -182,17 +188,27 @@ class PresenceHandler(object):
         # Start a LoopingCall in 30s that fires every 5s.
         # The initial delay is to allow disconnected clients a chance to
         # reconnect before we treat them as offline.
+        def run_timeout_handler():
+            return run_as_background_process(
+                "handle_presence_timeouts", self._handle_timeouts
+            )
+
         self.clock.call_later(
             30,
             self.clock.looping_call,
-            self._handle_timeouts,
+            run_timeout_handler,
             5000,
         )
 
+        def run_persister():
+            return run_as_background_process(
+                "persist_presence_changes", self._persist_unpersisted_changes
+            )
+
         self.clock.call_later(
             60,
             self.clock.looping_call,
-            self._persist_unpersisted_changes,
+            run_persister,
             60 * 1000,
         )
 
@@ -229,6 +245,7 @@ class PresenceHandler(object):
         )
 
         if self.unpersisted_users_changes:
+
             yield self.store.update_presence([
                 self.user_to_current_state[user_id]
                 for user_id in self.unpersisted_users_changes
@@ -240,30 +257,18 @@ class PresenceHandler(object):
         """We periodically persist the unpersisted changes, as otherwise they
         may stack up and slow down shutdown times.
         """
-        logger.info(
-            "Performing _persist_unpersisted_changes. Persisting %d unpersisted changes",
-            len(self.unpersisted_users_changes)
-        )
-
         unpersisted = self.unpersisted_users_changes
         self.unpersisted_users_changes = set()
 
         if unpersisted:
+            logger.info(
+                "Persisting %d upersisted presence updates", len(unpersisted)
+            )
             yield self.store.update_presence([
                 self.user_to_current_state[user_id]
                 for user_id in unpersisted
             ])
 
-        logger.info("Finished _persist_unpersisted_changes")
-
-    @defer.inlineCallbacks
-    def _update_states_and_catch_exception(self, new_states):
-        try:
-            res = yield self._update_states(new_states)
-            defer.returnValue(res)
-        except Exception:
-            logger.exception("Error updating presence")
-
     @defer.inlineCallbacks
     def _update_states(self, new_states):
         """Updates presence of users. Sets the appropriate timeouts. Pokes
@@ -338,45 +343,41 @@ class PresenceHandler(object):
         logger.info("Handling presence timeouts")
         now = self.clock.time_msec()
 
-        try:
-            with Measure(self.clock, "presence_handle_timeouts"):
-                # Fetch the list of users that *may* have timed out. Things may have
-                # changed since the timeout was set, so we won't necessarily have to
-                # take any action.
-                users_to_check = set(self.wheel_timer.fetch(now))
+        # Fetch the list of users that *may* have timed out. Things may have
+        # changed since the timeout was set, so we won't necessarily have to
+        # take any action.
+        users_to_check = set(self.wheel_timer.fetch(now))
 
-                # Check whether the lists of syncing processes from an external
-                # process have expired.
-                expired_process_ids = [
-                    process_id for process_id, last_update
-                    in self.external_process_last_updated_ms.items()
-                    if now - last_update > EXTERNAL_PROCESS_EXPIRY
-                ]
-                for process_id in expired_process_ids:
-                    users_to_check.update(
-                        self.external_process_last_updated_ms.pop(process_id, ())
-                    )
-                    self.external_process_last_update.pop(process_id)
+        # Check whether the lists of syncing processes from an external
+        # process have expired.
+        expired_process_ids = [
+            process_id for process_id, last_update
+            in self.external_process_last_updated_ms.items()
+            if now - last_update > EXTERNAL_PROCESS_EXPIRY
+        ]
+        for process_id in expired_process_ids:
+            users_to_check.update(
+                self.external_process_last_updated_ms.pop(process_id, ())
+            )
+            self.external_process_last_update.pop(process_id)
 
-                states = [
-                    self.user_to_current_state.get(
-                        user_id, UserPresenceState.default(user_id)
-                    )
-                    for user_id in users_to_check
-                ]
+        states = [
+            self.user_to_current_state.get(
+                user_id, UserPresenceState.default(user_id)
+            )
+            for user_id in users_to_check
+        ]
 
-                timers_fired_counter.inc(len(states))
+        timers_fired_counter.inc(len(states))
 
-                changes = handle_timeouts(
-                    states,
-                    is_mine_fn=self.is_mine_id,
-                    syncing_user_ids=self.get_currently_syncing_users(),
-                    now=now,
-                )
+        changes = handle_timeouts(
+            states,
+            is_mine_fn=self.is_mine_id,
+            syncing_user_ids=self.get_currently_syncing_users(),
+            now=now,
+        )
 
-            run_in_background(self._update_states_and_catch_exception, changes)
-        except Exception:
-            logger.exception("Exception in _handle_timeouts loop")
+        return self._update_states(changes)
 
     @defer.inlineCallbacks
     def bump_presence_active_time(self, user):
@@ -828,14 +829,22 @@ class PresenceHandler(object):
             if typ != EventTypes.Member:
                 continue
 
-            event = yield self.store.get_event(event_id)
-            if event.content.get("membership") != Membership.JOIN:
+            if event_id is None:
+                # state has been deleted, so this is not a join. We only care about
+                # joins.
+                continue
+
+            event = yield self.store.get_event(event_id, allow_none=True)
+            if not event or event.content.get("membership") != Membership.JOIN:
                 # We only care about joins
                 continue
 
             if prev_event_id:
-                prev_event = yield self.store.get_event(prev_event_id)
-                if prev_event.content.get("membership") == Membership.JOIN:
+                prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
+                if (
+                    prev_event
+                    and prev_event.content.get("membership") == Membership.JOIN
+                ):
                     # Ignore changes to join events.
                     continue
 
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index a65c98ff5c..3e04233394 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -15,12 +15,15 @@
 
 import logging
 
+from six import raise_from
+
 from twisted.internet import defer
 
 from synapse.api.errors import (
     AuthError,
-    CodeMessageException,
     Codes,
+    HttpResponseException,
+    RequestSendFailed,
     StoreError,
     SynapseError,
 )
@@ -31,6 +34,9 @@ from ._base import BaseHandler
 
 logger = logging.getLogger(__name__)
 
+MAX_DISPLAYNAME_LEN = 100
+MAX_AVATAR_URL_LEN = 1000
+
 
 class BaseProfileHandler(BaseHandler):
     """Handles fetching and updating user profile information.
@@ -53,6 +59,7 @@ class BaseProfileHandler(BaseHandler):
     @defer.inlineCallbacks
     def get_profile(self, user_id):
         target_user = UserID.from_string(user_id)
+
         if self.hs.is_mine(target_user):
             try:
                 displayname = yield self.store.get_profile_displayname(
@@ -81,10 +88,10 @@ class BaseProfileHandler(BaseHandler):
                     ignore_backoff=True,
                 )
                 defer.returnValue(result)
-            except CodeMessageException as e:
-                if e.code != 404:
-                    logger.exception("Failed to get displayname")
-                raise
+            except RequestSendFailed as e:
+                raise_from(SynapseError(502, "Failed to fetch profile"), e)
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
 
     @defer.inlineCallbacks
     def get_profile_from_cache(self, user_id):
@@ -138,10 +145,10 @@ class BaseProfileHandler(BaseHandler):
                     },
                     ignore_backoff=True,
                 )
-            except CodeMessageException as e:
-                if e.code != 404:
-                    logger.exception("Failed to get displayname")
-                raise
+            except RequestSendFailed as e:
+                raise_from(SynapseError(502, "Failed to fetch profile"), e)
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
 
             defer.returnValue(result["displayname"])
 
@@ -161,6 +168,11 @@ class BaseProfileHandler(BaseHandler):
         if not by_admin and target_user != requester.user:
             raise AuthError(400, "Cannot set another user's displayname")
 
+        if len(new_displayname) > MAX_DISPLAYNAME_LEN:
+            raise SynapseError(
+                400, "Displayname is too long (max %i)" % (MAX_DISPLAYNAME_LEN, ),
+            )
+
         if new_displayname == '':
             new_displayname = None
 
@@ -199,10 +211,10 @@ class BaseProfileHandler(BaseHandler):
                     },
                     ignore_backoff=True,
                 )
-            except CodeMessageException as e:
-                if e.code != 404:
-                    logger.exception("Failed to get avatar_url")
-                raise
+            except RequestSendFailed as e:
+                raise_from(SynapseError(502, "Failed to fetch profile"), e)
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
 
             defer.returnValue(result["avatar_url"])
 
@@ -216,6 +228,11 @@ class BaseProfileHandler(BaseHandler):
         if not by_admin and target_user != requester.user:
             raise AuthError(400, "Cannot set another user's avatar_url")
 
+        if len(new_avatar_url) > MAX_AVATAR_URL_LEN:
+            raise SynapseError(
+                400, "Avatar URL is too long (max %i)" % (MAX_AVATAR_URL_LEN, ),
+            )
+
         yield self.store.set_profile_avatar_url(
             target_user.localpart, new_avatar_url
         )
@@ -283,6 +300,48 @@ class BaseProfileHandler(BaseHandler):
                     room_id, str(e)
                 )
 
+    @defer.inlineCallbacks
+    def check_profile_query_allowed(self, target_user, requester=None):
+        """Checks whether a profile query is allowed. If the
+        'require_auth_for_profile_requests' config flag is set to True and a
+        'requester' is provided, the query is only allowed if the two users
+        share a room.
+
+        Args:
+            target_user (UserID): The owner of the queried profile.
+            requester (None|UserID): The user querying for the profile.
+
+        Raises:
+            SynapseError(403): The two users share no room, or ne user couldn't
+                be found to be in any room the server is in, and therefore the query
+                is denied.
+        """
+        # Implementation of MSC1301: don't allow looking up profiles if the
+        # requester isn't in the same room as the target. We expect requester to
+        # be None when this function is called outside of a profile query, e.g.
+        # when building a membership event. In this case, we must allow the
+        # lookup.
+        if not self.hs.config.require_auth_for_profile_requests or not requester:
+            return
+
+        try:
+            requester_rooms = yield self.store.get_rooms_for_user(
+                requester.to_string()
+            )
+            target_user_rooms = yield self.store.get_rooms_for_user(
+                target_user.to_string(),
+            )
+
+            # Check if the room lists have no elements in common.
+            if requester_rooms.isdisjoint(target_user_rooms):
+                raise SynapseError(403, "Profile isn't available", Codes.FORBIDDEN)
+        except StoreError as e:
+            if e.code == 404:
+                # This likely means that one of the users doesn't exist,
+                # so we act as if we couldn't find the profile.
+                raise SynapseError(403, "Profile isn't available", Codes.FORBIDDEN)
+            raise
+
 
 class MasterProfileHandler(BaseProfileHandler):
     PROFILE_UPDATE_MS = 60 * 1000
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index a51d11a257..9a388ea013 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -19,7 +19,7 @@ import logging
 from twisted.internet import defer
 
 from synapse import types
-from synapse.api.constants import LoginType
+from synapse.api.constants import MAX_USERID_LENGTH, LoginType
 from synapse.api.errors import (
     AuthError,
     Codes,
@@ -123,6 +123,15 @@ class RegistrationHandler(BaseHandler):
 
         self.check_user_id_not_appservice_exclusive(user_id)
 
+        if len(user_id) > MAX_USERID_LENGTH:
+            raise SynapseError(
+                400,
+                "User ID may not be longer than %s characters" % (
+                    MAX_USERID_LENGTH,
+                ),
+                Codes.INVALID_USERNAME
+            )
+
         users = yield self.store.get_users_by_id_case_insensitive(user_id)
         if users:
             if not guest_access_token:
@@ -522,6 +531,8 @@ class RegistrationHandler(BaseHandler):
             A tuple of (user_id, access_token).
         Raises:
             RegistrationError if there was a problem registering.
+
+        NB this is only used in tests. TODO: move it to the test package!
         """
         if localpart is None:
             raise SynapseError(400, "Request must include user id")
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 17628e2684..74793bab33 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -27,7 +27,7 @@ from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, JoinRules, RoomCreationPreset
 from synapse.api.errors import AuthError, Codes, NotFoundError, StoreError, SynapseError
-from synapse.api.room_versions import DEFAULT_ROOM_VERSION, KNOWN_ROOM_VERSIONS
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.storage.state import StateFilter
 from synapse.types import RoomAlias, RoomID, RoomStreamToken, StreamToken, UserID
 from synapse.util import stringutils
@@ -70,10 +70,15 @@ class RoomCreationHandler(BaseHandler):
         self.spam_checker = hs.get_spam_checker()
         self.event_creation_handler = hs.get_event_creation_handler()
         self.room_member_handler = hs.get_room_member_handler()
+        self.config = hs.config
 
         # linearizer to stop two upgrades happening at once
         self._upgrade_linearizer = Linearizer("room_upgrade_linearizer")
 
+        self._server_notices_mxid = hs.config.server_notices_mxid
+
+        self.third_party_event_rules = hs.get_third_party_event_rules()
+
     @defer.inlineCallbacks
     def upgrade_room(self, requester, old_room_id, new_version):
         """Replace a room with a new room with a different version
@@ -402,7 +407,7 @@ class RoomCreationHandler(BaseHandler):
                 yield directory_handler.create_association(
                     requester, RoomAlias.from_string(alias),
                     new_room_id, servers=(self.hs.hostname, ),
-                    send_event=False,
+                    send_event=False, check_membership=False,
                 )
                 logger.info("Moved alias %s to new room", alias)
             except SynapseError as e:
@@ -469,13 +474,36 @@ class RoomCreationHandler(BaseHandler):
 
         yield self.auth.check_auth_blocking(user_id)
 
-        if not self.spam_checker.user_may_create_room(user_id):
+        if (self._server_notices_mxid is not None and
+                requester.user.to_string() == self._server_notices_mxid):
+            # allow the server notices mxid to create rooms
+            is_requester_admin = True
+        else:
+            is_requester_admin = yield self.auth.is_server_admin(
+                requester.user,
+            )
+
+        # Check whether the third party rules allows/changes the room create
+        # request.
+        yield self.third_party_event_rules.on_create_room(
+            requester,
+            config,
+            is_requester_admin=is_requester_admin,
+        )
+
+        if not is_requester_admin and not self.spam_checker.user_may_create_room(
+            user_id,
+        ):
             raise SynapseError(403, "You are not permitted to create rooms")
 
         if ratelimit:
             yield self.ratelimit(requester)
 
-        room_version = config.get("room_version", DEFAULT_ROOM_VERSION.identifier)
+        room_version = config.get(
+            "room_version",
+            self.config.default_room_version.identifier,
+        )
+
         if not isinstance(room_version, string_types):
             raise SynapseError(
                 400,
@@ -538,6 +566,7 @@ class RoomCreationHandler(BaseHandler):
                 room_alias=room_alias,
                 servers=[self.hs.hostname],
                 send_event=False,
+                check_membership=False,
             )
 
         preset_config = config.get(
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 024d6db27a..458902bb7e 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
 # Copyright 2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -33,6 +34,8 @@ from synapse.types import RoomID, UserID
 from synapse.util.async_helpers import Linearizer
 from synapse.util.distributor import user_joined_room, user_left_room
 
+from ._base import BaseHandler
+
 logger = logging.getLogger(__name__)
 
 id_server_scheme = "https://"
@@ -69,8 +72,15 @@ class RoomMemberHandler(object):
 
         self.clock = hs.get_clock()
         self.spam_checker = hs.get_spam_checker()
+        self.third_party_event_rules = hs.get_third_party_event_rules()
         self._server_notices_mxid = self.config.server_notices_mxid
         self._enable_lookup = hs.config.enable_3pid_lookup
+        self.allow_per_room_profiles = self.config.allow_per_room_profiles
+
+        # This is only used to get at ratelimit function, and
+        # maybe_kick_guest_users. It's fine there are multiple of these as
+        # it doesn't store state.
+        self.base_handler = BaseHandler(hs)
 
     @abc.abstractmethod
     def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
@@ -350,6 +360,13 @@ class RoomMemberHandler(object):
             # later on.
             content = dict(content)
 
+        if not self.allow_per_room_profiles:
+            # Strip profile data, knowing that new profile data will be added to the
+            # event's content in event_creation_handler.create_event() using the target's
+            # global profile.
+            content.pop("displayname", None)
+            content.pop("avatar_url", None)
+
         effective_membership_state = action
         if action in ["kick", "unban"]:
             effective_membership_state = "leave"
@@ -703,6 +720,19 @@ class RoomMemberHandler(object):
                     Codes.FORBIDDEN,
                 )
 
+        # We need to rate limit *before* we send out any 3PID invites, so we
+        # can't just rely on the standard ratelimiting of events.
+        yield self.base_handler.ratelimit(requester)
+
+        can_invite = yield self.third_party_event_rules.check_threepid_can_be_invited(
+            medium, address, room_id,
+        )
+        if not can_invite:
+            raise SynapseError(
+                403, "This third-party identifier can not be invited in this room",
+                Codes.FORBIDDEN,
+            )
+
         invitee = yield self._lookup_3pid(
             id_server, medium, address
         )
@@ -924,7 +954,7 @@ class RoomMemberHandler(object):
         }
 
         if self.config.invite_3pid_guest:
-            guest_access_token, guest_user_id = yield self.get_or_register_3pid_guest(
+            guest_user_id, guest_access_token = yield self.get_or_register_3pid_guest(
                 requester=requester,
                 medium=medium,
                 address=address,
diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
index 49c439313e..9bba74d6c9 100644
--- a/synapse/handlers/search.py
+++ b/synapse/handlers/search.py
@@ -23,7 +23,6 @@ from twisted.internet import defer
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import SynapseError
 from synapse.api.filtering import Filter
-from synapse.events.utils import serialize_event
 from synapse.storage.state import StateFilter
 from synapse.visibility import filter_events_for_client
 
@@ -36,6 +35,7 @@ class SearchHandler(BaseHandler):
 
     def __init__(self, hs):
         super(SearchHandler, self).__init__(hs)
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     def get_old_rooms_from_upgraded_room(self, room_id):
@@ -401,14 +401,16 @@ class SearchHandler(BaseHandler):
         time_now = self.clock.time_msec()
 
         for context in contexts.values():
-            context["events_before"] = [
-                serialize_event(e, time_now)
-                for e in context["events_before"]
-            ]
-            context["events_after"] = [
-                serialize_event(e, time_now)
-                for e in context["events_after"]
-            ]
+            context["events_before"] = (
+                yield self._event_serializer.serialize_events(
+                    context["events_before"], time_now,
+                )
+            )
+            context["events_after"] = (
+                yield self._event_serializer.serialize_events(
+                    context["events_after"], time_now,
+                )
+            )
 
         state_results = {}
         if include_state:
@@ -422,14 +424,13 @@ class SearchHandler(BaseHandler):
         # We're now about to serialize the events. We should not make any
         # blocking calls after this. Otherwise the 'age' will be wrong
 
-        results = [
-            {
+        results = []
+        for e in allowed_events:
+            results.append({
                 "rank": rank_map[e.event_id],
-                "result": serialize_event(e, time_now),
+                "result": (yield self._event_serializer.serialize_event(e, time_now)),
                 "context": contexts.get(e.event_id, {}),
-            }
-            for e in allowed_events
-        ]
+            })
 
         rooms_cat_res = {
             "results": results,
@@ -438,10 +439,13 @@ class SearchHandler(BaseHandler):
         }
 
         if state_results:
-            rooms_cat_res["state"] = {
-                room_id: [serialize_event(e, time_now) for e in state]
-                for room_id, state in state_results.items()
-            }
+            s = {}
+            for room_id, state in state_results.items():
+                s[room_id] = yield self._event_serializer.serialize_events(
+                    state, time_now,
+                )
+
+            rooms_cat_res["state"] = s
 
         if room_groups and "room_id" in group_keys:
             rooms_cat_res.setdefault("groups", {})["room_id"] = room_groups
diff --git a/synapse/handlers/stats.py b/synapse/handlers/stats.py
new file mode 100644
index 0000000000..7ad16c8566
--- /dev/null
+++ b/synapse/handlers/stats.py
@@ -0,0 +1,333 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, JoinRules, Membership
+from synapse.handlers.state_deltas import StateDeltasHandler
+from synapse.metrics import event_processing_positions
+from synapse.metrics.background_process_metrics import run_as_background_process
+from synapse.types import UserID
+from synapse.util.metrics import Measure
+
+logger = logging.getLogger(__name__)
+
+
+class StatsHandler(StateDeltasHandler):
+    """Handles keeping the *_stats tables updated with a simple time-series of
+    information about the users, rooms and media on the server, such that admins
+    have some idea of who is consuming their resources.
+
+    Heavily derived from UserDirectoryHandler
+    """
+
+    def __init__(self, hs):
+        super(StatsHandler, self).__init__(hs)
+        self.hs = hs
+        self.store = hs.get_datastore()
+        self.state = hs.get_state_handler()
+        self.server_name = hs.hostname
+        self.clock = hs.get_clock()
+        self.notifier = hs.get_notifier()
+        self.is_mine_id = hs.is_mine_id
+        self.stats_bucket_size = hs.config.stats_bucket_size
+
+        # The current position in the current_state_delta stream
+        self.pos = None
+
+        # Guard to ensure we only process deltas one at a time
+        self._is_processing = False
+
+        if hs.config.stats_enabled:
+            self.notifier.add_replication_callback(self.notify_new_event)
+
+            # We kick this off so that we don't have to wait for a change before
+            # we start populating stats
+            self.clock.call_later(0, self.notify_new_event)
+
+    def notify_new_event(self):
+        """Called when there may be more deltas to process
+        """
+        if not self.hs.config.stats_enabled:
+            return
+
+        if self._is_processing:
+            return
+
+        @defer.inlineCallbacks
+        def process():
+            try:
+                yield self._unsafe_process()
+            finally:
+                self._is_processing = False
+
+        self._is_processing = True
+        run_as_background_process("stats.notify_new_event", process)
+
+    @defer.inlineCallbacks
+    def _unsafe_process(self):
+        # If self.pos is None then means we haven't fetched it from DB
+        if self.pos is None:
+            self.pos = yield self.store.get_stats_stream_pos()
+
+        # If still None then the initial background update hasn't happened yet
+        if self.pos is None:
+            defer.returnValue(None)
+
+        # Loop round handling deltas until we're up to date
+        while True:
+            with Measure(self.clock, "stats_delta"):
+                deltas = yield self.store.get_current_state_deltas(self.pos)
+                if not deltas:
+                    return
+
+                logger.info("Handling %d state deltas", len(deltas))
+                yield self._handle_deltas(deltas)
+
+                self.pos = deltas[-1]["stream_id"]
+                yield self.store.update_stats_stream_pos(self.pos)
+
+                event_processing_positions.labels("stats").set(self.pos)
+
+    @defer.inlineCallbacks
+    def _handle_deltas(self, deltas):
+        """
+        Called with the state deltas to process
+        """
+        for delta in deltas:
+            typ = delta["type"]
+            state_key = delta["state_key"]
+            room_id = delta["room_id"]
+            event_id = delta["event_id"]
+            stream_id = delta["stream_id"]
+            prev_event_id = delta["prev_event_id"]
+            stream_pos = delta["stream_id"]
+
+            logger.debug("Handling: %r %r, %s", typ, state_key, event_id)
+
+            token = yield self.store.get_earliest_token_for_room_stats(room_id)
+
+            # If the earliest token to begin from is larger than our current
+            # stream ID, skip processing this delta.
+            if token is not None and token >= stream_id:
+                logger.debug(
+                    "Ignoring: %s as earlier than this room's initial ingestion event",
+                    event_id,
+                )
+                continue
+
+            if event_id is None and prev_event_id is None:
+                # Errr...
+                continue
+
+            event_content = {}
+
+            if event_id is not None:
+                event = yield self.store.get_event(event_id, allow_none=True)
+                if event:
+                    event_content = event.content or {}
+
+            # We use stream_pos here rather than fetch by event_id as event_id
+            # may be None
+            now = yield self.store.get_received_ts_by_stream_pos(stream_pos)
+
+            # quantise time to the nearest bucket
+            now = (now // 1000 // self.stats_bucket_size) * self.stats_bucket_size
+
+            if typ == EventTypes.Member:
+                # we could use _get_key_change here but it's a bit inefficient
+                # given we're not testing for a specific result; might as well
+                # just grab the prev_membership and membership strings and
+                # compare them.
+                prev_event_content = {}
+                if prev_event_id is not None:
+                    prev_event = yield self.store.get_event(
+                        prev_event_id, allow_none=True,
+                    )
+                    if prev_event:
+                        prev_event_content = prev_event.content
+
+                membership = event_content.get("membership", Membership.LEAVE)
+                prev_membership = prev_event_content.get("membership", Membership.LEAVE)
+
+                if prev_membership == membership:
+                    continue
+
+                if prev_membership == Membership.JOIN:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "joined_members", -1
+                    )
+                elif prev_membership == Membership.INVITE:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "invited_members", -1
+                    )
+                elif prev_membership == Membership.LEAVE:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "left_members", -1
+                    )
+                elif prev_membership == Membership.BAN:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "banned_members", -1
+                    )
+                else:
+                    err = "%s is not a valid prev_membership" % (repr(prev_membership),)
+                    logger.error(err)
+                    raise ValueError(err)
+
+                if membership == Membership.JOIN:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "joined_members", +1
+                    )
+                elif membership == Membership.INVITE:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "invited_members", +1
+                    )
+                elif membership == Membership.LEAVE:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "left_members", +1
+                    )
+                elif membership == Membership.BAN:
+                    yield self.store.update_stats_delta(
+                        now, "room", room_id, "banned_members", +1
+                    )
+                else:
+                    err = "%s is not a valid membership" % (repr(membership),)
+                    logger.error(err)
+                    raise ValueError(err)
+
+                user_id = state_key
+                if self.is_mine_id(user_id):
+                    # update user_stats as it's one of our users
+                    public = yield self._is_public_room(room_id)
+
+                    if membership == Membership.LEAVE:
+                        yield self.store.update_stats_delta(
+                            now,
+                            "user",
+                            user_id,
+                            "public_rooms" if public else "private_rooms",
+                            -1,
+                        )
+                    elif membership == Membership.JOIN:
+                        yield self.store.update_stats_delta(
+                            now,
+                            "user",
+                            user_id,
+                            "public_rooms" if public else "private_rooms",
+                            +1,
+                        )
+
+            elif typ == EventTypes.Create:
+                # Newly created room. Add it with all blank portions.
+                yield self.store.update_room_state(
+                    room_id,
+                    {
+                        "join_rules": None,
+                        "history_visibility": None,
+                        "encryption": None,
+                        "name": None,
+                        "topic": None,
+                        "avatar": None,
+                        "canonical_alias": None,
+                    },
+                )
+
+            elif typ == EventTypes.JoinRules:
+                yield self.store.update_room_state(
+                    room_id, {"join_rules": event_content.get("join_rule")}
+                )
+
+                is_public = yield self._get_key_change(
+                    prev_event_id, event_id, "join_rule", JoinRules.PUBLIC
+                )
+                if is_public is not None:
+                    yield self.update_public_room_stats(now, room_id, is_public)
+
+            elif typ == EventTypes.RoomHistoryVisibility:
+                yield self.store.update_room_state(
+                    room_id,
+                    {"history_visibility": event_content.get("history_visibility")},
+                )
+
+                is_public = yield self._get_key_change(
+                    prev_event_id, event_id, "history_visibility", "world_readable"
+                )
+                if is_public is not None:
+                    yield self.update_public_room_stats(now, room_id, is_public)
+
+            elif typ == EventTypes.Encryption:
+                yield self.store.update_room_state(
+                    room_id, {"encryption": event_content.get("algorithm")}
+                )
+            elif typ == EventTypes.Name:
+                yield self.store.update_room_state(
+                    room_id, {"name": event_content.get("name")}
+                )
+            elif typ == EventTypes.Topic:
+                yield self.store.update_room_state(
+                    room_id, {"topic": event_content.get("topic")}
+                )
+            elif typ == EventTypes.RoomAvatar:
+                yield self.store.update_room_state(
+                    room_id, {"avatar": event_content.get("url")}
+                )
+            elif typ == EventTypes.CanonicalAlias:
+                yield self.store.update_room_state(
+                    room_id, {"canonical_alias": event_content.get("alias")}
+                )
+
+    @defer.inlineCallbacks
+    def update_public_room_stats(self, ts, room_id, is_public):
+        """
+        Increment/decrement a user's number of public rooms when a room they are
+        in changes to/from public visibility.
+
+        Args:
+            ts (int): Timestamp in seconds
+            room_id (str)
+            is_public (bool)
+        """
+        # For now, blindly iterate over all local users in the room so that
+        # we can handle the whole problem of copying buckets over as needed
+        user_ids = yield self.store.get_users_in_room(room_id)
+
+        for user_id in user_ids:
+            if self.hs.is_mine(UserID.from_string(user_id)):
+                yield self.store.update_stats_delta(
+                    ts, "user", user_id, "public_rooms", +1 if is_public else -1
+                )
+                yield self.store.update_stats_delta(
+                    ts, "user", user_id, "private_rooms", -1 if is_public else +1
+                )
+
+    @defer.inlineCallbacks
+    def _is_public_room(self, room_id):
+        join_rules = yield self.state.get_current_state(room_id, EventTypes.JoinRules)
+        history_visibility = yield self.state.get_current_state(
+            room_id, EventTypes.RoomHistoryVisibility
+        )
+
+        if (join_rules and join_rules.content.get("join_rule") == JoinRules.PUBLIC) or (
+            (
+                history_visibility
+                and history_visibility.content.get("history_visibility")
+                == "world_readable"
+            )
+        ):
+            defer.returnValue(True)
+        else:
+            defer.returnValue(False)
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 153312e39f..62fda0c664 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -583,30 +583,42 @@ class SyncHandler(object):
         )
 
         # if the room has a name or canonical_alias set, we can skip
-        # calculating heroes.  we assume that if the event has contents, it'll
-        # be a valid name or canonical_alias - i.e. we're checking that they
-        # haven't been "deleted" by blatting {} over the top.
+        # calculating heroes. Empty strings are falsey, so we check
+        # for the "name" value and default to an empty string.
         if name_id:
             name = yield self.store.get_event(name_id, allow_none=True)
-            if name and name.content:
+            if name and name.content.get("name"):
                 defer.returnValue(summary)
 
         if canonical_alias_id:
             canonical_alias = yield self.store.get_event(
                 canonical_alias_id, allow_none=True,
             )
-            if canonical_alias and canonical_alias.content:
+            if canonical_alias and canonical_alias.content.get("alias"):
                 defer.returnValue(summary)
 
+        me = sync_config.user.to_string()
+
         joined_user_ids = [
-            r[0] for r in details.get(Membership.JOIN, empty_ms).members
+            r[0]
+            for r in details.get(Membership.JOIN, empty_ms).members
+            if r[0] != me
         ]
         invited_user_ids = [
-            r[0] for r in details.get(Membership.INVITE, empty_ms).members
+            r[0]
+            for r in details.get(Membership.INVITE, empty_ms).members
+            if r[0] != me
         ]
         gone_user_ids = (
-            [r[0] for r in details.get(Membership.LEAVE, empty_ms).members] +
-            [r[0] for r in details.get(Membership.BAN, empty_ms).members]
+            [
+                r[0]
+                for r in details.get(Membership.LEAVE, empty_ms).members
+                if r[0] != me
+            ] + [
+                r[0]
+                for r in details.get(Membership.BAN, empty_ms).members
+                if r[0] != me
+            ]
         )
 
         # FIXME: only build up a member_ids list for our heroes
@@ -621,22 +633,13 @@ class SyncHandler(object):
                 member_ids[user_id] = event_id
 
         # FIXME: order by stream ordering rather than as returned by SQL
-        me = sync_config.user.to_string()
         if (joined_user_ids or invited_user_ids):
             summary['m.heroes'] = sorted(
-                [
-                    user_id
-                    for user_id in (joined_user_ids + invited_user_ids)
-                    if user_id != me
-                ]
+                [user_id for user_id in (joined_user_ids + invited_user_ids)]
             )[0:5]
         else:
             summary['m.heroes'] = sorted(
-                [
-                    user_id
-                    for user_id in gone_user_ids
-                    if user_id != me
-                ]
+                [user_id for user_id in gone_user_ids]
             )[0:5]
 
         if not sync_config.filter_collection.lazy_load_members():
@@ -934,7 +937,7 @@ class SyncHandler(object):
         res = yield self._generate_sync_entry_for_rooms(
             sync_result_builder, account_data_by_room
         )
-        newly_joined_rooms, newly_joined_users, _, _ = res
+        newly_joined_rooms, newly_joined_or_invited_users, _, _ = res
         _, _, newly_left_rooms, newly_left_users = res
 
         block_all_presence_data = (
@@ -943,7 +946,7 @@ class SyncHandler(object):
         )
         if self.hs_config.use_presence and not block_all_presence_data:
             yield self._generate_sync_entry_for_presence(
-                sync_result_builder, newly_joined_rooms, newly_joined_users
+                sync_result_builder, newly_joined_rooms, newly_joined_or_invited_users
             )
 
         yield self._generate_sync_entry_for_to_device(sync_result_builder)
@@ -951,7 +954,7 @@ class SyncHandler(object):
         device_lists = yield self._generate_sync_entry_for_device_list(
             sync_result_builder,
             newly_joined_rooms=newly_joined_rooms,
-            newly_joined_users=newly_joined_users,
+            newly_joined_or_invited_users=newly_joined_or_invited_users,
             newly_left_rooms=newly_left_rooms,
             newly_left_users=newly_left_users,
         )
@@ -1036,7 +1039,8 @@ class SyncHandler(object):
     @measure_func("_generate_sync_entry_for_device_list")
     @defer.inlineCallbacks
     def _generate_sync_entry_for_device_list(self, sync_result_builder,
-                                             newly_joined_rooms, newly_joined_users,
+                                             newly_joined_rooms,
+                                             newly_joined_or_invited_users,
                                              newly_left_rooms, newly_left_users):
         user_id = sync_result_builder.sync_config.user.to_string()
         since_token = sync_result_builder.since_token
@@ -1050,7 +1054,7 @@ class SyncHandler(object):
             # share a room with?
             for room_id in newly_joined_rooms:
                 joined_users = yield self.state.get_current_users_in_room(room_id)
-                newly_joined_users.update(joined_users)
+                newly_joined_or_invited_users.update(joined_users)
 
             for room_id in newly_left_rooms:
                 left_users = yield self.state.get_current_users_in_room(room_id)
@@ -1058,7 +1062,7 @@ class SyncHandler(object):
 
             # TODO: Check that these users are actually new, i.e. either they
             # weren't in the previous sync *or* they left and rejoined.
-            changed.update(newly_joined_users)
+            changed.update(newly_joined_or_invited_users)
 
             if not changed and not newly_left_users:
                 defer.returnValue(DeviceLists(
@@ -1176,7 +1180,7 @@ class SyncHandler(object):
 
     @defer.inlineCallbacks
     def _generate_sync_entry_for_presence(self, sync_result_builder, newly_joined_rooms,
-                                          newly_joined_users):
+                                          newly_joined_or_invited_users):
         """Generates the presence portion of the sync response. Populates the
         `sync_result_builder` with the result.
 
@@ -1184,8 +1188,9 @@ class SyncHandler(object):
             sync_result_builder(SyncResultBuilder)
             newly_joined_rooms(list): List of rooms that the user has joined
                 since the last sync (or empty if an initial sync)
-            newly_joined_users(list): List of users that have joined rooms
-                since the last sync (or empty if an initial sync)
+            newly_joined_or_invited_users(list): List of users that have joined
+                or been invited to rooms since the last sync (or empty if an initial
+                sync)
         """
         now_token = sync_result_builder.now_token
         sync_config = sync_result_builder.sync_config
@@ -1211,7 +1216,7 @@ class SyncHandler(object):
             "presence_key", presence_key
         )
 
-        extra_users_ids = set(newly_joined_users)
+        extra_users_ids = set(newly_joined_or_invited_users)
         for room_id in newly_joined_rooms:
             users = yield self.state.get_current_users_in_room(room_id)
             extra_users_ids.update(users)
@@ -1243,7 +1248,8 @@ class SyncHandler(object):
 
         Returns:
             Deferred(tuple): Returns a 4-tuple of
-            `(newly_joined_rooms, newly_joined_users, newly_left_rooms, newly_left_users)`
+            `(newly_joined_rooms, newly_joined_or_invited_users,
+            newly_left_rooms, newly_left_users)`
         """
         user_id = sync_result_builder.sync_config.user.to_string()
         block_all_room_ephemeral = (
@@ -1314,8 +1320,8 @@ class SyncHandler(object):
 
         sync_result_builder.invited.extend(invited)
 
-        # Now we want to get any newly joined users
-        newly_joined_users = set()
+        # Now we want to get any newly joined or invited users
+        newly_joined_or_invited_users = set()
         newly_left_users = set()
         if since_token:
             for joined_sync in sync_result_builder.joined:
@@ -1324,19 +1330,22 @@ class SyncHandler(object):
                 )
                 for event in it:
                     if event.type == EventTypes.Member:
-                        if event.membership == Membership.JOIN:
-                            newly_joined_users.add(event.state_key)
+                        if (
+                            event.membership == Membership.JOIN or
+                            event.membership == Membership.INVITE
+                        ):
+                            newly_joined_or_invited_users.add(event.state_key)
                         else:
                             prev_content = event.unsigned.get("prev_content", {})
                             prev_membership = prev_content.get("membership", None)
                             if prev_membership == Membership.JOIN:
                                 newly_left_users.add(event.state_key)
 
-        newly_left_users -= newly_joined_users
+        newly_left_users -= newly_joined_or_invited_users
 
         defer.returnValue((
             newly_joined_rooms,
-            newly_joined_users,
+            newly_joined_or_invited_users,
             newly_left_rooms,
             newly_left_users,
         ))
@@ -1381,7 +1390,7 @@ class SyncHandler(object):
             where:
                 room_entries is a list [RoomSyncResultBuilder]
                 invited_rooms is a list [InvitedSyncResult]
-                newly_joined rooms is a list[str] of room ids
+                newly_joined_rooms is a list[str] of room ids
                 newly_left_rooms is a list[str] of room ids
         """
         user_id = sync_result_builder.sync_config.user.to_string()
@@ -1422,7 +1431,7 @@ class SyncHandler(object):
             if room_id in sync_result_builder.joined_room_ids and non_joins:
                 # Always include if the user (re)joined the room, especially
                 # important so that device list changes are calculated correctly.
-                # If there are non join member events, but we are still in the room,
+                # If there are non-join member events, but we are still in the room,
                 # then the user must have left and joined
                 newly_joined_rooms.append(room_id)
 
diff --git a/synapse/http/client.py b/synapse/http/client.py
index ad454f4964..5c073fff07 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -17,7 +17,7 @@
 import logging
 from io import BytesIO
 
-from six import text_type
+from six import raise_from, text_type
 from six.moves import urllib
 
 import treq
@@ -90,9 +90,32 @@ class IPBlacklistingResolver(object):
     def resolveHostName(self, recv, hostname, portNumber=0):
 
         r = recv()
-        d = defer.Deferred()
         addresses = []
 
+        def _callback():
+            r.resolutionBegan(None)
+
+            has_bad_ip = False
+            for i in addresses:
+                ip_address = IPAddress(i.host)
+
+                if check_against_blacklist(
+                    ip_address, self._ip_whitelist, self._ip_blacklist
+                ):
+                    logger.info(
+                        "Dropped %s from DNS resolution to %s due to blacklist" %
+                        (ip_address, hostname)
+                    )
+                    has_bad_ip = True
+
+            # if we have a blacklisted IP, we'd like to raise an error to block the
+            # request, but all we can really do from here is claim that there were no
+            # valid results.
+            if not has_bad_ip:
+                for i in addresses:
+                    r.addressResolved(i)
+            r.resolutionComplete()
+
         @provider(IResolutionReceiver)
         class EndpointReceiver(object):
             @staticmethod
@@ -101,34 +124,16 @@ class IPBlacklistingResolver(object):
 
             @staticmethod
             def addressResolved(address):
-                ip_address = IPAddress(address.host)
-
-                if check_against_blacklist(
-                    ip_address, self._ip_whitelist, self._ip_blacklist
-                ):
-                    logger.info(
-                        "Dropped %s from DNS resolution to %s" % (ip_address, hostname)
-                    )
-                    raise SynapseError(403, "IP address blocked by IP blacklist entry")
-
                 addresses.append(address)
 
             @staticmethod
             def resolutionComplete():
-                d.callback(addresses)
+                _callback()
 
         self._reactor.nameResolver.resolveHostName(
             EndpointReceiver, hostname, portNumber=portNumber
         )
 
-        def _callback(addrs):
-            r.resolutionBegan(None)
-            for i in addrs:
-                r.addressResolved(i)
-            r.resolutionComplete()
-
-        d.addCallback(_callback)
-
         return r
 
 
@@ -160,7 +165,8 @@ class BlacklistingAgentWrapper(Agent):
                 ip_address, self._ip_whitelist, self._ip_blacklist
             ):
                 logger.info(
-                    "Blocking access to %s because of blacklist" % (ip_address,)
+                    "Blocking access to %s due to blacklist" %
+                    (ip_address,)
                 )
                 e = SynapseError(403, "IP address blocked by IP blacklist entry")
                 return defer.fail(Failure(e))
@@ -258,9 +264,6 @@ class SimpleHttpClient(object):
             uri (str): URI to query.
             data (bytes): Data to send in the request body, if applicable.
             headers (t.w.http_headers.Headers): Request headers.
-
-        Raises:
-            SynapseError: If the IP is blacklisted.
         """
         # A small wrapper around self.agent.request() so we can easily attach
         # counters to it
@@ -539,10 +542,15 @@ class SimpleHttpClient(object):
             length = yield make_deferred_yieldable(
                 _readBodyToFile(response, output_stream, max_size)
             )
+        except SynapseError:
+            # This can happen e.g. because the body is too large.
+            raise
         except Exception as e:
-            logger.exception("Failed to download body")
-            raise SynapseError(
-                502, ("Failed to download remote body: %s" % e), Codes.UNKNOWN
+            raise_from(
+                SynapseError(
+                    502, ("Failed to download remote body: %s" % e),
+                ),
+                e
             )
 
         defer.returnValue(
diff --git a/synapse/http/federation/matrix_federation_agent.py b/synapse/http/federation/matrix_federation_agent.py
index 1334c630cc..b4cbe97b41 100644
--- a/synapse/http/federation/matrix_federation_agent.py
+++ b/synapse/http/federation/matrix_federation_agent.py
@@ -149,7 +149,7 @@ class MatrixFederationAgent(object):
             tls_options = None
         else:
             tls_options = self._tls_client_options_factory.get_options(
-                res.tls_server_name.decode("ascii")
+                res.tls_server_name.decode("ascii"),
             )
 
         # make sure that the Host header is set correctly
diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index ff63d0b2a8..663ea72a7a 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -27,9 +27,11 @@ import treq
 from canonicaljson import encode_canonical_json
 from prometheus_client import Counter
 from signedjson.sign import sign_json
+from zope.interface import implementer
 
 from twisted.internet import defer, protocol
 from twisted.internet.error import DNSLookupError
+from twisted.internet.interfaces import IReactorPluggableNameResolver
 from twisted.internet.task import _EPSILON, Cooperator
 from twisted.web._newclient import ResponseDone
 from twisted.web.http_headers import Headers
@@ -44,6 +46,7 @@ from synapse.api.errors import (
     SynapseError,
 )
 from synapse.http import QuieterFileBodyProducer
+from synapse.http.client import BlacklistingAgentWrapper, IPBlacklistingResolver
 from synapse.http.federation.matrix_federation_agent import MatrixFederationAgent
 from synapse.util.async_helpers import timeout_deferred
 from synapse.util.logcontext import make_deferred_yieldable
@@ -172,19 +175,44 @@ class MatrixFederationHttpClient(object):
         self.hs = hs
         self.signing_key = hs.config.signing_key[0]
         self.server_name = hs.hostname
-        reactor = hs.get_reactor()
+
+        real_reactor = hs.get_reactor()
+
+        # We need to use a DNS resolver which filters out blacklisted IP
+        # addresses, to prevent DNS rebinding.
+        nameResolver = IPBlacklistingResolver(
+            real_reactor, None, hs.config.federation_ip_range_blacklist,
+        )
+
+        @implementer(IReactorPluggableNameResolver)
+        class Reactor(object):
+            def __getattr__(_self, attr):
+                if attr == "nameResolver":
+                    return nameResolver
+                else:
+                    return getattr(real_reactor, attr)
+
+        self.reactor = Reactor()
 
         self.agent = MatrixFederationAgent(
-            hs.get_reactor(),
+            self.reactor,
             tls_client_options_factory,
         )
+
+        # Use a BlacklistingAgentWrapper to prevent circumventing the IP
+        # blacklist via IP literals in server names
+        self.agent = BlacklistingAgentWrapper(
+            self.agent, self.reactor,
+            ip_blacklist=hs.config.federation_ip_range_blacklist,
+        )
+
         self.clock = hs.get_clock()
         self._store = hs.get_datastore()
         self.version_string_bytes = hs.version_string.encode('ascii')
         self.default_timeout = 60
 
         def schedule(x):
-            reactor.callLater(_EPSILON, x)
+            self.reactor.callLater(_EPSILON, x)
 
         self._cooperator = Cooperator(scheduler=schedule)
 
@@ -257,7 +285,24 @@ class MatrixFederationHttpClient(object):
             request (MatrixFederationRequest): details of request to be sent
 
             timeout (int|None): number of milliseconds to wait for the response headers
-                (including connecting to the server). 60s by default.
+                (including connecting to the server), *for each attempt*.
+                60s by default.
+
+            long_retries (bool): whether to use the long retry algorithm.
+
+                The regular retry algorithm makes 4 attempts, with intervals
+                [0.5s, 1s, 2s].
+
+                The long retry algorithm makes 11 attempts, with intervals
+                [4s, 16s, 60s, 60s, ...]
+
+                Both algorithms add -20%/+40% jitter to the retry intervals.
+
+                Note that the above intervals are *in addition* to the time spent
+                waiting for the request to complete (up to `timeout` ms).
+
+                NB: the long retry algorithm takes over 20 minutes to complete, with
+                a default timeout of 60s!
 
             ignore_backoff (bool): true to ignore the historical backoff data
                 and try the request anyway.
@@ -370,7 +415,7 @@ class MatrixFederationHttpClient(object):
                             request_deferred = timeout_deferred(
                                 request_deferred,
                                 timeout=_sec_timeout,
-                                reactor=self.hs.get_reactor(),
+                                reactor=self.reactor,
                             )
 
                             response = yield request_deferred
@@ -397,7 +442,7 @@ class MatrixFederationHttpClient(object):
                         d = timeout_deferred(
                             d,
                             timeout=_sec_timeout,
-                            reactor=self.hs.get_reactor(),
+                            reactor=self.reactor,
                         )
 
                         try:
@@ -538,10 +583,14 @@ class MatrixFederationHttpClient(object):
                 the request body. This will be encoded as JSON.
             json_data_callback (callable): A callable returning the dict to
                 use as the request body.
-            long_retries (bool): A boolean that indicates whether we should
-                retry for a short or long time.
-            timeout(int): How long to try (in ms) the destination for before
-                giving up. None indicates no timeout.
+
+            long_retries (bool): whether to use the long retry algorithm. See
+                docs on _send_request for details.
+
+            timeout (int|None): number of milliseconds to wait for the response headers
+                (including connecting to the server), *for each attempt*.
+                self._default_timeout (60s) by default.
+
             ignore_backoff (bool): true to ignore the historical backoff data
                 and try the request anyway.
             backoff_on_404 (bool): True if we should count a 404 response as
@@ -586,7 +635,7 @@ class MatrixFederationHttpClient(object):
         )
 
         body = yield _handle_json_response(
-            self.hs.get_reactor(), self.default_timeout, request, response,
+            self.reactor, self.default_timeout, request, response,
         )
 
         defer.returnValue(body)
@@ -599,15 +648,22 @@ class MatrixFederationHttpClient(object):
         Args:
             destination (str): The remote server to send the HTTP request
                 to.
+
             path (str): The HTTP path.
+
             data (dict): A dict containing the data that will be used as
                 the request body. This will be encoded as JSON.
-            long_retries (bool): A boolean that indicates whether we should
-                retry for a short or long time.
-            timeout(int): How long to try (in ms) the destination for before
-                giving up. None indicates no timeout.
+
+            long_retries (bool): whether to use the long retry algorithm. See
+                docs on _send_request for details.
+
+            timeout (int|None): number of milliseconds to wait for the response headers
+                (including connecting to the server), *for each attempt*.
+                self._default_timeout (60s) by default.
+
             ignore_backoff (bool): true to ignore the historical backoff data and
                 try the request anyway.
+
             args (dict): query params
         Returns:
             Deferred[dict|list]: Succeeds when we get a 2xx HTTP response. The
@@ -645,7 +701,7 @@ class MatrixFederationHttpClient(object):
             _sec_timeout = self.default_timeout
 
         body = yield _handle_json_response(
-            self.hs.get_reactor(), _sec_timeout, request, response,
+            self.reactor, _sec_timeout, request, response,
         )
         defer.returnValue(body)
 
@@ -658,14 +714,19 @@ class MatrixFederationHttpClient(object):
         Args:
             destination (str): The remote server to send the HTTP request
                 to.
+
             path (str): The HTTP path.
+
             args (dict|None): A dictionary used to create query strings, defaults to
                 None.
-            timeout (int): How long to try (in ms) the destination for before
-                giving up. None indicates no timeout and that the request will
-                be retried.
+
+            timeout (int|None): number of milliseconds to wait for the response headers
+                (including connecting to the server), *for each attempt*.
+                self._default_timeout (60s) by default.
+
             ignore_backoff (bool): true to ignore the historical backoff data
                 and try the request anyway.
+
             try_trailing_slash_on_400 (bool): True if on a 400 M_UNRECOGNIZED
                 response we should try appending a trailing slash to the end of
                 the request. Workaround for #3622 in Synapse <= v0.99.3.
@@ -683,10 +744,6 @@ class MatrixFederationHttpClient(object):
             RequestSendFailed: If there were problems connecting to the
                 remote, due to e.g. DNS failures, connection timeouts etc.
         """
-        logger.debug("get_json args: %s", args)
-
-        logger.debug("Query bytes: %s Retry DNS: %s", args, retry_on_dns_fail)
-
         request = MatrixFederationRequest(
             method="GET",
             destination=destination,
@@ -704,7 +761,7 @@ class MatrixFederationHttpClient(object):
         )
 
         body = yield _handle_json_response(
-            self.hs.get_reactor(), self.default_timeout, request, response,
+            self.reactor, self.default_timeout, request, response,
         )
 
         defer.returnValue(body)
@@ -718,12 +775,18 @@ class MatrixFederationHttpClient(object):
             destination (str): The remote server to send the HTTP request
                 to.
             path (str): The HTTP path.
-            long_retries (bool): A boolean that indicates whether we should
-                retry for a short or long time.
-            timeout(int): How long to try (in ms) the destination for before
-                giving up. None indicates no timeout.
+
+            long_retries (bool): whether to use the long retry algorithm. See
+                docs on _send_request for details.
+
+            timeout (int|None): number of milliseconds to wait for the response headers
+                (including connecting to the server), *for each attempt*.
+                self._default_timeout (60s) by default.
+
             ignore_backoff (bool): true to ignore the historical backoff data and
                 try the request anyway.
+
+            args (dict): query params
         Returns:
             Deferred[dict|list]: Succeeds when we get a 2xx HTTP response. The
             result will be the decoded JSON body.
@@ -753,7 +816,7 @@ class MatrixFederationHttpClient(object):
         )
 
         body = yield _handle_json_response(
-            self.hs.get_reactor(), self.default_timeout, request, response,
+            self.reactor, self.default_timeout, request, response,
         )
         defer.returnValue(body)
 
@@ -801,7 +864,7 @@ class MatrixFederationHttpClient(object):
 
         try:
             d = _readBodyToFile(response, output_stream, max_size)
-            d.addTimeout(self.default_timeout, self.hs.get_reactor())
+            d.addTimeout(self.default_timeout, self.reactor)
             length = yield make_deferred_yieldable(d)
         except Exception as e:
             logger.warn(
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index 528125e737..197c652850 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -55,7 +55,7 @@ def parse_integer_from_args(args, name, default=None, required=False):
             return int(args[name][0])
         except Exception:
             message = "Query parameter %r must be an integer" % (name,)
-            raise SynapseError(400, message)
+            raise SynapseError(400, message, errcode=Codes.INVALID_PARAM)
     else:
         if required:
             message = "Missing integer query parameter %r" % (name,)
diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index ef48984fdd..8aee14a8a8 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -25,7 +25,7 @@ import six
 
 import attr
 from prometheus_client import Counter, Gauge, Histogram
-from prometheus_client.core import REGISTRY, GaugeMetricFamily
+from prometheus_client.core import REGISTRY, GaugeMetricFamily, HistogramMetricFamily
 
 from twisted.internet import reactor
 
@@ -40,7 +40,6 @@ HAVE_PROC_SELF_STAT = os.path.exists("/proc/self/stat")
 
 
 class RegistryProxy(object):
-
     @staticmethod
     def collect():
         for metric in REGISTRY.collect():
@@ -63,10 +62,7 @@ class LaterGauge(object):
         try:
             calls = self.caller()
         except Exception:
-            logger.exception(
-                "Exception running callback for LaterGauge(%s)",
-                self.name,
-            )
+            logger.exception("Exception running callback for LaterGauge(%s)", self.name)
             yield g
             return
 
@@ -116,9 +112,7 @@ class InFlightGauge(object):
         # Create a class which have the sub_metrics values as attributes, which
         # default to 0 on initialization. Used to pass to registered callbacks.
         self._metrics_class = attr.make_class(
-            "_MetricsEntry",
-            attrs={x: attr.ib(0) for x in sub_metrics},
-            slots=True,
+            "_MetricsEntry", attrs={x: attr.ib(0) for x in sub_metrics}, slots=True
         )
 
         # Counts number of in flight blocks for a given set of label values
@@ -157,7 +151,9 @@ class InFlightGauge(object):
 
         Note: may be called by a separate thread.
         """
-        in_flight = GaugeMetricFamily(self.name + "_total", self.desc, labels=self.labels)
+        in_flight = GaugeMetricFamily(
+            self.name + "_total", self.desc, labels=self.labels
+        )
 
         metrics_by_key = {}
 
@@ -179,7 +175,9 @@ class InFlightGauge(object):
         yield in_flight
 
         for name in self.sub_metrics:
-            gauge = GaugeMetricFamily("_".join([self.name, name]), "", labels=self.labels)
+            gauge = GaugeMetricFamily(
+                "_".join([self.name, name]), "", labels=self.labels
+            )
             for key, metrics in six.iteritems(metrics_by_key):
                 gauge.add_metric(key, getattr(metrics, name))
             yield gauge
@@ -193,12 +191,74 @@ class InFlightGauge(object):
         all_gauges[self.name] = self
 
 
+@attr.s(hash=True)
+class BucketCollector(object):
+    """
+    Like a Histogram, but allows buckets to be point-in-time instead of
+    incrementally added to.
+
+    Args:
+        name (str): Base name of metric to be exported to Prometheus.
+        data_collector (callable -> dict): A synchronous callable that
+            returns a dict mapping bucket to number of items in the
+            bucket. If these buckets are not the same as the buckets
+            given to this class, they will be remapped into them.
+        buckets (list[float]): List of floats/ints of the buckets to
+            give to Prometheus. +Inf is ignored, if given.
+
+    """
+
+    name = attr.ib()
+    data_collector = attr.ib()
+    buckets = attr.ib()
+
+    def collect(self):
+
+        # Fetch the data -- this must be synchronous!
+        data = self.data_collector()
+
+        buckets = {}
+
+        res = []
+        for x in data.keys():
+            for i, bound in enumerate(self.buckets):
+                if x <= bound:
+                    buckets[bound] = buckets.get(bound, 0) + data[x]
+
+        for i in self.buckets:
+            res.append([str(i), buckets.get(i, 0)])
+
+        res.append(["+Inf", sum(data.values())])
+
+        metric = HistogramMetricFamily(
+            self.name,
+            "",
+            buckets=res,
+            sum_value=sum([x * y for x, y in data.items()]),
+        )
+        yield metric
+
+    def __attrs_post_init__(self):
+        self.buckets = [float(x) for x in self.buckets if x != "+Inf"]
+        if self.buckets != sorted(self.buckets):
+            raise ValueError("Buckets not sorted")
+
+        self.buckets = tuple(self.buckets)
+
+        if self.name in all_gauges.keys():
+            logger.warning("%s already registered, reregistering" % (self.name,))
+            REGISTRY.unregister(all_gauges.pop(self.name))
+
+        REGISTRY.register(self)
+        all_gauges[self.name] = self
+
+
 #
 # Detailed CPU metrics
 #
 
-class CPUMetrics(object):
 
+class CPUMetrics(object):
     def __init__(self):
         ticks_per_sec = 100
         try:
@@ -237,13 +297,28 @@ gc_time = Histogram(
     "python_gc_time",
     "Time taken to GC (sec)",
     ["gen"],
-    buckets=[0.0025, 0.005, 0.01, 0.025, 0.05, 0.10, 0.25, 0.50, 1.00, 2.50,
-             5.00, 7.50, 15.00, 30.00, 45.00, 60.00],
+    buckets=[
+        0.0025,
+        0.005,
+        0.01,
+        0.025,
+        0.05,
+        0.10,
+        0.25,
+        0.50,
+        1.00,
+        2.50,
+        5.00,
+        7.50,
+        15.00,
+        30.00,
+        45.00,
+        60.00,
+    ],
 )
 
 
 class GCCounts(object):
-
     def collect(self):
         cm = GaugeMetricFamily("python_gc_counts", "GC object counts", labels=["gen"])
         for n, m in enumerate(gc.get_count()):
@@ -279,9 +354,7 @@ sent_transactions_counter = Counter("synapse_federation_client_sent_transactions
 events_processed_counter = Counter("synapse_federation_client_events_processed", "")
 
 event_processing_loop_counter = Counter(
-    "synapse_event_processing_loop_count",
-    "Event processing loop iterations",
-    ["name"],
+    "synapse_event_processing_loop_count", "Event processing loop iterations", ["name"]
 )
 
 event_processing_loop_room_count = Counter(
@@ -311,7 +384,6 @@ last_ticked = time.time()
 
 
 class ReactorLastSeenMetric(object):
-
     def collect(self):
         cm = GaugeMetricFamily(
             "python_twisted_reactor_last_seen",
@@ -325,7 +397,6 @@ REGISTRY.register(ReactorLastSeenMetric())
 
 
 def runUntilCurrentTimer(func):
-
     @functools.wraps(func)
     def f(*args, **kwargs):
         now = reactor.seconds()
diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
index 8f0682c948..3523a40108 100644
--- a/synapse/push/baserules.py
+++ b/synapse/push/baserules.py
@@ -261,6 +261,23 @@ BASE_APPEND_OVERRIDE_RULES = [
                 'value': True,
             }
         ]
+    },
+    {
+        'rule_id': 'global/override/.m.rule.tombstone',
+        'conditions': [
+            {
+                'kind': 'event_match',
+                'key': 'type',
+                'pattern': 'm.room.tombstone',
+                '_id': '_tombstone',
+            }
+        ],
+        'actions': [
+            'notify', {
+                'set_tweak': 'highlight',
+                'value': True,
+            }
+        ]
     }
 ]
 
diff --git a/synapse/push/emailpusher.py b/synapse/push/emailpusher.py
index e8ee67401f..c89a8438a9 100644
--- a/synapse/push/emailpusher.py
+++ b/synapse/push/emailpusher.py
@@ -114,6 +114,21 @@ class EmailPusher(object):
 
         run_as_background_process("emailpush.process", self._process)
 
+    def _pause_processing(self):
+        """Used by tests to temporarily pause processing of events.
+
+        Asserts that its not currently processing.
+        """
+        assert not self._is_processing
+        self._is_processing = True
+
+    def _resume_processing(self):
+        """Used by tests to resume processing of events after pausing.
+        """
+        assert self._is_processing
+        self._is_processing = False
+        self._start_processing()
+
     @defer.inlineCallbacks
     def _process(self):
         # we should never get here if we are already processing
@@ -215,6 +230,10 @@ class EmailPusher(object):
 
     @defer.inlineCallbacks
     def save_last_stream_ordering_and_success(self, last_stream_ordering):
+        if last_stream_ordering is None:
+            # This happens if we haven't yet processed anything
+            return
+
         self.last_stream_ordering = last_stream_ordering
         yield self.store.update_pusher_last_stream_ordering_and_success(
             self.app_id, self.email, self.user_id,
diff --git a/synapse/push/mailer.py b/synapse/push/mailer.py
index 1eb5be0957..099f9545ab 100644
--- a/synapse/push/mailer.py
+++ b/synapse/push/mailer.py
@@ -80,10 +80,10 @@ ALLOWED_ATTRS = {
 
 
 class Mailer(object):
-    def __init__(self, hs, app_name, notif_template_html, notif_template_text):
+    def __init__(self, hs, app_name, template_html, template_text):
         self.hs = hs
-        self.notif_template_html = notif_template_html
-        self.notif_template_text = notif_template_text
+        self.template_html = template_html
+        self.template_text = template_text
 
         self.sendmail = self.hs.get_sendmail()
         self.store = self.hs.get_datastore()
@@ -93,22 +93,49 @@ class Mailer(object):
 
         logger.info("Created Mailer for app_name %s" % app_name)
 
+    @defer.inlineCallbacks
+    def send_password_reset_mail(
+        self,
+        email_address,
+        token,
+        client_secret,
+        sid,
+    ):
+        """Send an email with a password reset link to a user
+
+        Args:
+            email_address (str): Email address we're sending the password
+                reset to
+            token (str): Unique token generated by the server to verify
+                password reset email was received
+            client_secret (str): Unique token generated by the client to
+                group together multiple email sending attempts
+            sid (str): The generated session ID
+        """
+        if email.utils.parseaddr(email_address)[1] == '':
+            raise RuntimeError("Invalid 'to' email address")
+
+        link = (
+            self.hs.config.public_baseurl +
+            "_matrix/client/unstable/password_reset/email/submit_token"
+            "?token=%s&client_secret=%s&sid=%s" %
+            (token, client_secret, sid)
+        )
+
+        template_vars = {
+            "link": link,
+        }
+
+        yield self.send_email(
+            email_address,
+            "[%s] Password Reset Email" % self.hs.config.server_name,
+            template_vars,
+        )
+
     @defer.inlineCallbacks
     def send_notification_mail(self, app_id, user_id, email_address,
                                push_actions, reason):
-        try:
-            from_string = self.hs.config.email_notif_from % {
-                "app": self.app_name
-            }
-        except TypeError:
-            from_string = self.hs.config.email_notif_from
-
-        raw_from = email.utils.parseaddr(from_string)[1]
-        raw_to = email.utils.parseaddr(email_address)[1]
-
-        if raw_to == '':
-            raise RuntimeError("Invalid 'to' address")
-
+        """Send email regarding a user's room notifications"""
         rooms_in_order = deduped_ordered_list(
             [pa['room_id'] for pa in push_actions]
         )
@@ -176,14 +203,36 @@ class Mailer(object):
             "reason": reason,
         }
 
-        html_text = self.notif_template_html.render(**template_vars)
+        yield self.send_email(
+            email_address,
+            "[%s] %s" % (self.app_name, summary_text),
+            template_vars,
+        )
+
+    @defer.inlineCallbacks
+    def send_email(self, email_address, subject, template_vars):
+        """Send an email with the given information and template text"""
+        try:
+            from_string = self.hs.config.email_notif_from % {
+                "app": self.app_name
+            }
+        except TypeError:
+            from_string = self.hs.config.email_notif_from
+
+        raw_from = email.utils.parseaddr(from_string)[1]
+        raw_to = email.utils.parseaddr(email_address)[1]
+
+        if raw_to == '':
+            raise RuntimeError("Invalid 'to' address")
+
+        html_text = self.template_html.render(**template_vars)
         html_part = MIMEText(html_text, "html", "utf8")
 
-        plain_text = self.notif_template_text.render(**template_vars)
+        plain_text = self.template_text.render(**template_vars)
         text_part = MIMEText(plain_text, "plain", "utf8")
 
         multipart_msg = MIMEMultipart('alternative')
-        multipart_msg['Subject'] = "[%s] %s" % (self.app_name, summary_text)
+        multipart_msg['Subject'] = subject
         multipart_msg['From'] = from_string
         multipart_msg['To'] = email_address
         multipart_msg['Date'] = email.utils.formatdate()
@@ -521,11 +570,11 @@ def format_ts_filter(value, format):
     return time.strftime(format, time.localtime(value / 1000))
 
 
-def load_jinja2_templates(config):
+def load_jinja2_templates(config, template_html_name, template_text_name):
     """Load the jinja2 email templates from disk
 
     Returns:
-        (notif_template_html, notif_template_text)
+        (template_html, template_text)
     """
     logger.info("loading email templates from '%s'", config.email_template_dir)
     loader = jinja2.FileSystemLoader(config.email_template_dir)
@@ -533,14 +582,10 @@ def load_jinja2_templates(config):
     env.filters["format_ts"] = format_ts_filter
     env.filters["mxc_to_http"] = _create_mxc_to_http_filter(config)
 
-    notif_template_html = env.get_template(
-        config.email_notif_template_html
-    )
-    notif_template_text = env.get_template(
-        config.email_notif_template_text
-    )
+    template_html = env.get_template(template_html_name)
+    template_text = env.get_template(template_text_name)
 
-    return notif_template_html, notif_template_text
+    return template_html, template_text
 
 
 def _create_mxc_to_http_filter(config):
diff --git a/synapse/push/presentable_names.py b/synapse/push/presentable_names.py
index eef6e18c2e..0c66702325 100644
--- a/synapse/push/presentable_names.py
+++ b/synapse/push/presentable_names.py
@@ -162,6 +162,17 @@ def calculate_room_name(store, room_state_ids, user_id, fallback_to_members=True
 
 
 def descriptor_from_member_events(member_events):
+    """Get a description of the room based on the member events.
+
+    Args:
+        member_events (Iterable[FrozenEvent])
+
+    Returns:
+        str
+    """
+
+    member_events = list(member_events)
+
     if len(member_events) == 0:
         return "nobody"
     elif len(member_events) == 1:
diff --git a/synapse/push/pusher.py b/synapse/push/pusher.py
index b33f2a357b..aff85daeb5 100644
--- a/synapse/push/pusher.py
+++ b/synapse/push/pusher.py
@@ -44,7 +44,11 @@ class PusherFactory(object):
         if hs.config.email_enable_notifs:
             self.mailers = {}  # app_name -> Mailer
 
-            templates = load_jinja2_templates(hs.config)
+            templates = load_jinja2_templates(
+                config=hs.config,
+                template_html_name=hs.config.email_notif_template_html,
+                template_text_name=hs.config.email_notif_template_text,
+            )
             self.notif_template_html, self.notif_template_text = templates
 
             self.pusher_types["email"] = self._create_email_pusher
@@ -66,8 +70,8 @@ class PusherFactory(object):
             mailer = Mailer(
                 hs=self.hs,
                 app_name=app_name,
-                notif_template_html=self.notif_template_html,
-                notif_template_text=self.notif_template_text,
+                template_html=self.notif_template_html,
+                template_text=self.notif_template_text,
             )
             self.mailers[app_name] = mailer
         return EmailPusher(self.hs, pusherdict, mailer)
diff --git a/synapse/push/pusherpool.py b/synapse/push/pusherpool.py
index 40a7709c09..63c583565f 100644
--- a/synapse/push/pusherpool.py
+++ b/synapse/push/pusherpool.py
@@ -60,6 +60,11 @@ class PusherPool:
     def add_pusher(self, user_id, access_token, kind, app_id,
                    app_display_name, device_display_name, pushkey, lang, data,
                    profile_tag=""):
+        """Creates a new pusher and adds it to the pool
+
+        Returns:
+            Deferred[EmailPusher|HttpPusher]
+        """
         time_now_msec = self.clock.time_msec()
 
         # we try to create the pusher just to validate the config: it
@@ -103,7 +108,9 @@ class PusherPool:
             last_stream_ordering=last_stream_ordering,
             profile_tag=profile_tag,
         )
-        yield self.start_pusher_by_id(app_id, pushkey, user_id)
+        pusher = yield self.start_pusher_by_id(app_id, pushkey, user_id)
+
+        defer.returnValue(pusher)
 
     @defer.inlineCallbacks
     def remove_pushers_by_app_id_and_pushkey_not_user(self, app_id, pushkey,
@@ -184,7 +191,11 @@ class PusherPool:
 
     @defer.inlineCallbacks
     def start_pusher_by_id(self, app_id, pushkey, user_id):
-        """Look up the details for the given pusher, and start it"""
+        """Look up the details for the given pusher, and start it
+
+        Returns:
+            Deferred[EmailPusher|HttpPusher|None]: The pusher started, if any
+        """
         if not self._should_start_pushers:
             return
 
@@ -192,13 +203,16 @@ class PusherPool:
             app_id, pushkey
         )
 
-        p = None
+        pusher_dict = None
         for r in resultlist:
             if r['user_name'] == user_id:
-                p = r
+                pusher_dict = r
 
-        if p:
-            yield self._start_pusher(p)
+        pusher = None
+        if pusher_dict:
+            pusher = yield self._start_pusher(pusher_dict)
+
+        defer.returnValue(pusher)
 
     @defer.inlineCallbacks
     def _start_pushers(self):
@@ -224,7 +238,7 @@ class PusherPool:
             pusherdict (dict):
 
         Returns:
-            None
+            Deferred[EmailPusher|HttpPusher]
         """
         try:
             p = self.pusher_factory.create_pusher(pusherdict)
@@ -270,6 +284,8 @@ class PusherPool:
 
         p.on_started(have_notifs)
 
+        defer.returnValue(p)
+
     @defer.inlineCallbacks
     def remove_pusher(self, app_id, pushkey, user_id):
         appid_pushkey = "%s:%s" % (app_id, pushkey)
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index f71e21ff4d..11ace2bfb1 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -16,7 +16,12 @@
 
 import logging
 
-from pkg_resources import DistributionNotFound, VersionConflict, get_distribution
+from pkg_resources import (
+    DistributionNotFound,
+    Requirement,
+    VersionConflict,
+    get_provider,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -39,7 +44,10 @@ REQUIREMENTS = [
     "canonicaljson>=1.1.3",
     "signedjson>=1.0.0",
     "pynacl>=1.2.1",
-    "service_identity>=16.0.0",
+    "idna>=2.5",
+
+    # validating SSL certs for IP addresses requires service_identity 18.1.
+    "service_identity>=18.1.0",
 
     # our logcontext handling relies on the ability to cancel inlineCallbacks
     # (https://twistedmatrix.com/trac/ticket/4632) which landed in Twisted 18.7.
@@ -53,11 +61,11 @@ REQUIREMENTS = [
     "pyasn1-modules>=0.0.7",
     "daemonize>=2.3.1",
     "bcrypt>=3.1.0",
-    "pillow>=3.1.2",
+    "pillow>=4.3.0",
     "sortedcontainers>=1.4.4",
     "psutil>=2.0.0",
     "pymacaroons>=0.13.0",
-    "msgpack>=0.5.0",
+    "msgpack>=0.5.2",
     "phonenumbers>=8.2.0",
     "six>=1.10",
     # prometheus_client 0.4.0 changed the format of counter metrics
@@ -72,30 +80,42 @@ REQUIREMENTS = [
 ]
 
 CONDITIONAL_REQUIREMENTS = {
-    "email.enable_notifs": ["Jinja2>=2.9", "bleach>=1.4.2"],
+    "email": ["Jinja2>=2.9", "bleach>=1.4.3"],
     "matrix-synapse-ldap3": ["matrix-synapse-ldap3>=0.1"],
-    "postgres": ["psycopg2>=2.6"],
+
+    # we use execute_batch, which arrived in psycopg 2.7.
+    "postgres": ["psycopg2>=2.7"],
 
     # ConsentResource uses select_autoescape, which arrived in jinja 2.9
     "resources.consent": ["Jinja2>=2.9"],
 
     # ACME support is required to provision TLS certificates from authorities
     # that use the protocol, such as Let's Encrypt.
-    "acme": ["txacme>=0.9.2"],
+    "acme": [
+        "txacme>=0.9.2",
+
+        # txacme depends on eliot. Eliot 1.8.0 is incompatible with
+        # python 3.5.2, as per https://github.com/itamarst/eliot/issues/418
+        'eliot<1.8.0;python_version<"3.5.3"',
+    ],
 
     "saml2": ["pysaml2>=4.5.0"],
+    "systemd": ["systemd-python>=231"],
     "url_preview": ["lxml>=3.5.0"],
     "test": ["mock>=2.0", "parameterized"],
     "sentry": ["sentry-sdk>=0.7.2"],
 }
 
+ALL_OPTIONAL_REQUIREMENTS = set()
+
+for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
+    # Exclude systemd as it's a system-based requirement.
+    if name not in ["systemd"]:
+        ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
+
 
 def list_requirements():
-    deps = set(REQUIREMENTS)
-    for opt in CONDITIONAL_REQUIREMENTS.values():
-        deps = set(opt) | deps
-
-    return list(deps)
+    return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
 
 
 class DependencyException(Exception):
@@ -111,10 +131,10 @@ class DependencyException(Exception):
     @property
     def dependencies(self):
         for i in self.args[0]:
-            yield '"' + i + '"'
+            yield "'" + i + "'"
 
 
-def check_requirements(for_feature=None, _get_distribution=get_distribution):
+def check_requirements(for_feature=None):
     deps_needed = []
     errors = []
 
@@ -125,7 +145,7 @@ def check_requirements(for_feature=None, _get_distribution=get_distribution):
 
     for dependency in reqs:
         try:
-            _get_distribution(dependency)
+            _check_requirement(dependency)
         except VersionConflict as e:
             deps_needed.append(dependency)
             errors.append(
@@ -143,7 +163,7 @@ def check_requirements(for_feature=None, _get_distribution=get_distribution):
 
         for dependency in OPTS:
             try:
-                _get_distribution(dependency)
+                _check_requirement(dependency)
             except VersionConflict as e:
                 deps_needed.append(dependency)
                 errors.append(
@@ -161,6 +181,23 @@ def check_requirements(for_feature=None, _get_distribution=get_distribution):
         raise DependencyException(deps_needed)
 
 
+def _check_requirement(dependency_string):
+    """Parses a dependency string, and checks if the specified requirement is installed
+
+    Raises:
+        VersionConflict if the requirement is installed, but with the the wrong version
+        DistributionNotFound if nothing is found to provide the requirement
+    """
+    req = Requirement.parse(dependency_string)
+
+    # first check if the markers specify that this requirement needs installing
+    if req.marker is not None and not req.marker.evaluate():
+        # not required for this environment
+        return
+
+    get_provider(req)
+
+
 if __name__ == "__main__":
     import sys
 
diff --git a/synapse/replication/http/_base.py b/synapse/replication/http/_base.py
index e81456ab2b..0a432a16fa 100644
--- a/synapse/replication/http/_base.py
+++ b/synapse/replication/http/_base.py
@@ -17,11 +17,17 @@ import abc
 import logging
 import re
 
+from six import raise_from
 from six.moves import urllib
 
 from twisted.internet import defer
 
-from synapse.api.errors import CodeMessageException, HttpResponseException
+from synapse.api.errors import (
+    CodeMessageException,
+    HttpResponseException,
+    RequestSendFailed,
+    SynapseError,
+)
 from synapse.util.caches.response_cache import ResponseCache
 from synapse.util.stringutils import random_string
 
@@ -175,6 +181,8 @@ class ReplicationEndpoint(object):
                 # on the master process that we should send to the client. (And
                 # importantly, not stack traces everywhere)
                 raise e.to_synapse_error()
+            except RequestSendFailed as e:
+                raise_from(SynapseError(502, "Failed to talk to master"), e)
 
             defer.returnValue(result)
 
diff --git a/synapse/replication/slave/storage/events.py b/synapse/replication/slave/storage/events.py
index b457c5563f..a3952506c1 100644
--- a/synapse/replication/slave/storage/events.py
+++ b/synapse/replication/slave/storage/events.py
@@ -23,6 +23,7 @@ from synapse.replication.tcp.streams.events import (
 from synapse.storage.event_federation import EventFederationWorkerStore
 from synapse.storage.event_push_actions import EventPushActionsWorkerStore
 from synapse.storage.events_worker import EventsWorkerStore
+from synapse.storage.relations import RelationsWorkerStore
 from synapse.storage.roommember import RoomMemberWorkerStore
 from synapse.storage.signatures import SignatureWorkerStore
 from synapse.storage.state import StateGroupWorkerStore
@@ -52,6 +53,7 @@ class SlavedEventStore(EventFederationWorkerStore,
                        EventsWorkerStore,
                        SignatureWorkerStore,
                        UserErasureWorkerStore,
+                       RelationsWorkerStore,
                        BaseSlavedStore):
 
     def __init__(self, db_conn, hs):
@@ -89,7 +91,7 @@ class SlavedEventStore(EventFederationWorkerStore,
             for row in rows:
                 self.invalidate_caches_for_event(
                     -token, row.event_id, row.room_id, row.type, row.state_key,
-                    row.redacts,
+                    row.redacts, row.relates_to,
                     backfilled=True,
                 )
         return super(SlavedEventStore, self).process_replication_rows(
@@ -102,7 +104,7 @@ class SlavedEventStore(EventFederationWorkerStore,
         if row.type == EventsStreamEventRow.TypeId:
             self.invalidate_caches_for_event(
                 token, data.event_id, data.room_id, data.type, data.state_key,
-                data.redacts,
+                data.redacts, data.relates_to,
                 backfilled=False,
             )
         elif row.type == EventsStreamCurrentStateRow.TypeId:
@@ -114,7 +116,8 @@ class SlavedEventStore(EventFederationWorkerStore,
             raise Exception("Unknown events stream row type %s" % (row.type, ))
 
     def invalidate_caches_for_event(self, stream_ordering, event_id, room_id,
-                                    etype, state_key, redacts, backfilled):
+                                    etype, state_key, redacts, relates_to,
+                                    backfilled):
         self._invalidate_get_event_cache(event_id)
 
         self.get_latest_event_ids_in_room.invalidate((room_id,))
@@ -136,3 +139,8 @@ class SlavedEventStore(EventFederationWorkerStore,
                 state_key, stream_ordering
             )
             self.get_invited_rooms_for_user.invalidate((state_key,))
+
+        if relates_to:
+            self.get_relations_for_event.invalidate_many((relates_to,))
+            self.get_aggregation_groups_for_event.invalidate_many((relates_to,))
+            self.get_applicable_edit.invalidate((relates_to,))
diff --git a/synapse/replication/slave/storage/keys.py b/synapse/replication/slave/storage/keys.py
index 8032f53fec..cc6f7f009f 100644
--- a/synapse/replication/slave/storage/keys.py
+++ b/synapse/replication/slave/storage/keys.py
@@ -13,22 +13,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from synapse.storage import DataStore
-from synapse.storage.keys import KeyStore
+from synapse.storage import KeyStore
 
-from ._base import BaseSlavedStore, __func__
+# KeyStore isn't really safe to use from a worker, but for now we do so and hope that
+# the races it creates aren't too bad.
 
-
-class SlavedKeyStore(BaseSlavedStore):
-    _get_server_verify_key = KeyStore.__dict__[
-        "_get_server_verify_key"
-    ]
-
-    get_server_verify_keys = __func__(DataStore.get_server_verify_keys)
-    store_server_verify_key = __func__(DataStore.store_server_verify_key)
-
-    get_server_certificate = __func__(DataStore.get_server_certificate)
-    store_server_certificate = __func__(DataStore.store_server_certificate)
-
-    get_server_keys_json = __func__(DataStore.get_server_keys_json)
-    store_server_keys_json = __func__(DataStore.store_server_keys_json)
+SlavedKeyStore = KeyStore
diff --git a/synapse/replication/tcp/streams/_base.py b/synapse/replication/tcp/streams/_base.py
index 8971a6a22e..b6ce7a7bee 100644
--- a/synapse/replication/tcp/streams/_base.py
+++ b/synapse/replication/tcp/streams/_base.py
@@ -32,6 +32,7 @@ BackfillStreamRow = namedtuple("BackfillStreamRow", (
     "type",  # str
     "state_key",  # str, optional
     "redacts",  # str, optional
+    "relates_to",  # str, optional
 ))
 PresenceStreamRow = namedtuple("PresenceStreamRow", (
     "user_id",  # str
diff --git a/synapse/replication/tcp/streams/events.py b/synapse/replication/tcp/streams/events.py
index e0f6e29248..f1290d022a 100644
--- a/synapse/replication/tcp/streams/events.py
+++ b/synapse/replication/tcp/streams/events.py
@@ -80,11 +80,12 @@ class BaseEventsStreamRow(object):
 class EventsStreamEventRow(BaseEventsStreamRow):
     TypeId = "ev"
 
-    event_id = attr.ib()   # str
-    room_id = attr.ib()    # str
-    type = attr.ib()       # str
-    state_key = attr.ib()  # str, optional
-    redacts = attr.ib()    # str, optional
+    event_id = attr.ib()    # str
+    room_id = attr.ib()     # str
+    type = attr.ib()        # str
+    state_key = attr.ib()   # str, optional
+    redacts = attr.ib()     # str, optional
+    relates_to = attr.ib()  # str, optional
 
 
 @attr.s(slots=True, frozen=True)
diff --git a/synapse/res/templates/mail-expiry.css b/synapse/res/templates/mail-expiry.css
new file mode 100644
index 0000000000..3dea486467
--- /dev/null
+++ b/synapse/res/templates/mail-expiry.css
@@ -0,0 +1,4 @@
+.noticetext {
+    margin-top: 10px;
+    margin-bottom: 10px;
+}
diff --git a/synapse/res/templates/notice_expiry.html b/synapse/res/templates/notice_expiry.html
new file mode 100644
index 0000000000..f0d7c66e1b
--- /dev/null
+++ b/synapse/res/templates/notice_expiry.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <style type="text/css">
+            {% include 'mail.css' without context %}
+            {% include "mail-%s.css" % app_name ignore missing without context %}
+            {% include 'mail-expiry.css' without context %}
+        </style>
+    </head>
+    <body>
+        <table id="page">
+            <tr>
+                <td> </td>
+                <td id="inner">
+                    <table class="header">
+                        <tr>
+                            <td>
+                                <div class="salutation">Hi {{ display_name }},</div>
+                            </td>
+                            <td class="logo">
+                                {% if app_name == "Riot" %}
+                                    <img src="http://riot.im/img/external/riot-logo-email.png" width="83" height="83" alt="[Riot]"/>
+                                {% elif app_name == "Vector" %}
+                                    <img src="http://matrix.org/img/vector-logo-email.png" width="64" height="83" alt="[Vector]"/>
+                                {% else %}
+                                    <img src="http://matrix.org/img/matrix-120x51.png" width="120" height="51" alt="[matrix]"/>
+                                {% endif %}
+                            </td>
+                        </tr>
+                        <tr>
+                          <td colspan="2">
+                            <div class="noticetext">Your account will expire on {{ expiration_ts|format_ts("%d-%m-%Y") }}. This means that you will lose access to your account after this date.</div>
+                            <div class="noticetext">To extend the validity of your account, please click on the link bellow (or copy and paste it into a new browser tab):</div>
+                            <div class="noticetext"><a href="{{ url }}">{{ url }}</a></div>
+                          </td>
+                        </tr>
+                    </table>
+                </td>
+                <td> </td>
+            </tr>
+        </table>
+    </body>
+</html>
diff --git a/synapse/res/templates/notice_expiry.txt b/synapse/res/templates/notice_expiry.txt
new file mode 100644
index 0000000000..41f1c4279c
--- /dev/null
+++ b/synapse/res/templates/notice_expiry.txt
@@ -0,0 +1,7 @@
+Hi {{ display_name }},
+
+Your account will expire on {{ expiration_ts|format_ts("%d-%m-%Y") }}. This means that you will lose access to your account after this date.
+
+To extend the validity of your account, please click on the link bellow (or copy and paste it to a new browser tab):
+
+{{ url }}
diff --git a/synapse/res/templates/password_reset.html b/synapse/res/templates/password_reset.html
new file mode 100644
index 0000000000..4fa7b36734
--- /dev/null
+++ b/synapse/res/templates/password_reset.html
@@ -0,0 +1,9 @@
+<html>
+<body>
+    <p>A password reset request has been received for your Matrix account. If this was you, please click the link below to confirm resetting your password:</p>
+
+    <a href="{{ link }}">{{ link }}</a>
+
+    <p>If this was not you, please disregard this email and contact your server administrator. Thank you.</p>
+</body>
+</html>
diff --git a/synapse/res/templates/password_reset.txt b/synapse/res/templates/password_reset.txt
new file mode 100644
index 0000000000..f0deff59a7
--- /dev/null
+++ b/synapse/res/templates/password_reset.txt
@@ -0,0 +1,7 @@
+A password reset request has been received for your Matrix account. If this
+was you, please click the link below to confirm resetting your password:
+
+{{ link }}
+
+If this was not you, please disregard this email and contact your server
+administrator. Thank you.
diff --git a/synapse/res/templates/password_reset_failure.html b/synapse/res/templates/password_reset_failure.html
new file mode 100644
index 0000000000..0b132cf8db
--- /dev/null
+++ b/synapse/res/templates/password_reset_failure.html
@@ -0,0 +1,6 @@
+<html>
+<head></head>
+<body>
+<p>{{ failure_reason }}. Your password has not been reset.</p>
+</body>
+</html>
diff --git a/synapse/res/templates/password_reset_success.html b/synapse/res/templates/password_reset_success.html
new file mode 100644
index 0000000000..7324d66d1e
--- /dev/null
+++ b/synapse/res/templates/password_reset_success.html
@@ -0,0 +1,6 @@
+<html>
+<head></head>
+<body>
+<p>Your email has now been validated, please return to your client to reset your password. You may now close this window.</p>
+</body>
+</html>
diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py
index 91f5247d52..e6110ad9b1 100644
--- a/synapse/rest/__init__.py
+++ b/synapse/rest/__init__.py
@@ -13,11 +13,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+import synapse.rest.admin
 from synapse.http.server import JsonResource
 from synapse.rest.client import versions
 from synapse.rest.client.v1 import (
-    admin,
     directory,
     events,
     initial_sync,
@@ -33,6 +32,7 @@ from synapse.rest.client.v1 import (
 from synapse.rest.client.v2_alpha import (
     account,
     account_data,
+    account_validity,
     auth,
     capabilities,
     devices,
@@ -44,6 +44,7 @@ from synapse.rest.client.v2_alpha import (
     read_marker,
     receipts,
     register,
+    relations,
     report_event,
     room_keys,
     room_upgrade_rest_servlet,
@@ -57,8 +58,14 @@ from synapse.rest.client.v2_alpha import (
 
 
 class ClientRestResource(JsonResource):
-    """A resource for version 1 of the matrix client API."""
+    """Matrix Client API REST resource.
 
+    This gets mounted at various points under /_matrix/client, including:
+       * /_matrix/client/r0
+       * /_matrix/client/api/v1
+       * /_matrix/client/unstable
+       * etc
+    """
     def __init__(self, hs):
         JsonResource.__init__(self, hs, canonical_json=False)
         self.register_servlets(self, hs)
@@ -81,7 +88,6 @@ class ClientRestResource(JsonResource):
         presence.register_servlets(hs, client_resource)
         directory.register_servlets(hs, client_resource)
         voip.register_servlets(hs, client_resource)
-        admin.register_servlets(hs, client_resource)
         pusher.register_servlets(hs, client_resource)
         push_rule.register_servlets(hs, client_resource)
         logout.register_servlets(hs, client_resource)
@@ -109,3 +115,10 @@ class ClientRestResource(JsonResource):
         groups.register_servlets(hs, client_resource)
         room_upgrade_rest_servlet.register_servlets(hs, client_resource)
         capabilities.register_servlets(hs, client_resource)
+        account_validity.register_servlets(hs, client_resource)
+        relations.register_servlets(hs, client_resource)
+
+        # moving to /_synapse/admin
+        synapse.rest.admin.register_servlets_for_client_rest_resource(
+            hs, client_resource
+        )
diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/admin/__init__.py
similarity index 77%
rename from synapse/rest/client/v1/admin.py
rename to synapse/rest/admin/__init__.py
index 7d7a75fc30..d6c4dcdb18 100644
--- a/synapse/rest/client/v1/admin.py
+++ b/synapse/rest/admin/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd
+# Copyright 2018-2019 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ import hashlib
 import hmac
 import logging
 import platform
+import re
 
 from six import text_type
 from six.moves import http_client
@@ -27,39 +28,56 @@ from twisted.internet import defer
 import synapse
 from synapse.api.constants import Membership, UserTypes
 from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
+from synapse.http.server import JsonResource
 from synapse.http.servlet import (
+    RestServlet,
     assert_params_in_dict,
     parse_integer,
     parse_json_object_from_request,
     parse_string,
 )
+from synapse.rest.admin._base import assert_requester_is_admin, assert_user_is_admin
+from synapse.rest.admin.server_notice_servlet import SendServerNoticeServlet
 from synapse.types import UserID, create_requester
 from synapse.util.versionstring import get_version_string
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
-class UsersRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/users/(?P<user_id>[^/]*)")
+def historical_admin_path_patterns(path_regex):
+    """Returns the list of patterns for an admin endpoint, including historical ones
+
+    This is a backwards-compatibility hack. Previously, the Admin API was exposed at
+    various paths under /_matrix/client. This function returns a list of patterns
+    matching those paths (as well as the new one), so that existing scripts which rely
+    on the endpoints being available there are not broken.
+
+    Note that this should only be used for existing endpoints: new ones should just
+    register for the /_synapse/admin path.
+    """
+    return list(
+        re.compile(prefix + path_regex)
+        for prefix in (
+            "^/_synapse/admin/v1",
+            "^/_matrix/client/api/v1/admin",
+            "^/_matrix/client/unstable/admin",
+            "^/_matrix/client/r0/admin"
+        )
+    )
+
+
+class UsersRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/users/(?P<user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(UsersRestServlet, self).__init__(hs)
+        self.hs = hs
+        self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
         target_user = UserID.from_string(user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
-
-        # To allow all users to get the users list
-        # if not is_admin and target_user != auth_user:
-        #     raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only users a local user")
@@ -69,37 +87,30 @@ class UsersRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class VersionServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/server_version")
+class VersionServlet(RestServlet):
+    PATTERNS = (re.compile("^/_synapse/admin/v1/server_version$"), )
 
-    @defer.inlineCallbacks
-    def on_GET(self, request):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
-
-        ret = {
+    def __init__(self, hs):
+        self.res = {
             'server_version': get_version_string(synapse),
             'python_version': platform.python_version(),
         }
 
-        defer.returnValue((200, ret))
+    def on_GET(self, request):
+        return 200, self.res
 
 
-class UserRegisterServlet(ClientV1RestServlet):
+class UserRegisterServlet(RestServlet):
     """
     Attributes:
          NONCE_TIMEOUT (int): Seconds until a generated nonce won't be accepted
          nonces (dict[str, int]): The nonces that we will accept. A dict of
              nonce to the time it was generated, in int seconds.
     """
-    PATTERNS = client_path_patterns("/admin/register")
+    PATTERNS = historical_admin_path_patterns("/register")
     NONCE_TIMEOUT = 60
 
     def __init__(self, hs):
-        super(UserRegisterServlet, self).__init__(hs)
         self.handlers = hs.get_handlers()
         self.reactor = hs.get_reactor()
         self.nonces = {}
@@ -226,11 +237,12 @@ class UserRegisterServlet(ClientV1RestServlet):
         defer.returnValue((200, result))
 
 
-class WhoisRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/whois/(?P<user_id>[^/]*)")
+class WhoisRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/whois/(?P<user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(WhoisRestServlet, self).__init__(hs)
+        self.hs = hs
+        self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
 
     @defer.inlineCallbacks
@@ -238,10 +250,9 @@ class WhoisRestServlet(ClientV1RestServlet):
         target_user = UserID.from_string(user_id)
         requester = yield self.auth.get_user_by_req(request)
         auth_user = requester.user
-        is_admin = yield self.auth.is_server_admin(requester.user)
 
-        if not is_admin and target_user != auth_user:
-            raise AuthError(403, "You are not a server admin")
+        if target_user != auth_user:
+            yield assert_user_is_admin(self.auth, auth_user)
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only whois a local user")
@@ -251,20 +262,16 @@ class WhoisRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class PurgeMediaCacheRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/purge_media_cache")
+class PurgeMediaCacheRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/purge_media_cache")
 
     def __init__(self, hs):
         self.media_repository = hs.get_media_repository()
-        super(PurgeMediaCacheRestServlet, self).__init__(hs)
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         before_ts = parse_integer(request, "before_ts", required=True)
         logger.info("before_ts: %r", before_ts)
@@ -274,9 +281,9 @@ class PurgeMediaCacheRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class PurgeHistoryRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/admin/purge_history/(?P<room_id>[^/]*)(/(?P<event_id>[^/]+))?"
+class PurgeHistoryRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns(
+        "/purge_history/(?P<room_id>[^/]*)(/(?P<event_id>[^/]+))?"
     )
 
     def __init__(self, hs):
@@ -285,17 +292,13 @@ class PurgeHistoryRestServlet(ClientV1RestServlet):
         Args:
             hs (synapse.server.HomeServer)
         """
-        super(PurgeHistoryRestServlet, self).__init__(hs)
         self.pagination_handler = hs.get_pagination_handler()
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id, event_id):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         body = parse_json_object_from_request(request, allow_empty_body=True)
 
@@ -371,9 +374,9 @@ class PurgeHistoryRestServlet(ClientV1RestServlet):
         }))
 
 
-class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/admin/purge_history_status/(?P<purge_id>[^/]+)"
+class PurgeHistoryStatusRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns(
+        "/purge_history_status/(?P<purge_id>[^/]+)"
     )
 
     def __init__(self, hs):
@@ -382,16 +385,12 @@ class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
         Args:
             hs (synapse.server.HomeServer)
         """
-        super(PurgeHistoryStatusRestServlet, self).__init__(hs)
         self.pagination_handler = hs.get_pagination_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, purge_id):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         purge_status = self.pagination_handler.get_purge_status(purge_id)
         if purge_status is None:
@@ -400,15 +399,16 @@ class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
         defer.returnValue((200, purge_status.asdict()))
 
 
-class DeactivateAccountRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/deactivate/(?P<target_user_id>[^/]*)")
+class DeactivateAccountRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/deactivate/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(DeactivateAccountRestServlet, self).__init__(hs)
         self._deactivate_account_handler = hs.get_deactivate_account_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, target_user_id):
+        yield assert_requester_is_admin(self.auth, request)
         body = parse_json_object_from_request(request, allow_empty_body=True)
         erase = body.get("erase", False)
         if not isinstance(erase, bool):
@@ -419,11 +419,6 @@ class DeactivateAccountRestServlet(ClientV1RestServlet):
             )
 
         UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
 
         result = yield self._deactivate_account_handler.deactivate_account(
             target_user_id, erase,
@@ -438,13 +433,13 @@ class DeactivateAccountRestServlet(ClientV1RestServlet):
         }))
 
 
-class ShutdownRoomRestServlet(ClientV1RestServlet):
+class ShutdownRoomRestServlet(RestServlet):
     """Shuts down a room by removing all local users from the room and blocking
     all future invites and joins to the room. Any local aliases will be repointed
     to a new room created by `new_room_user_id` and kicked users will be auto
     joined to the new room.
     """
-    PATTERNS = client_path_patterns("/admin/shutdown_room/(?P<room_id>[^/]+)")
+    PATTERNS = historical_admin_path_patterns("/shutdown_room/(?P<room_id>[^/]+)")
 
     DEFAULT_MESSAGE = (
         "Sharing illegal content on this server is not permitted and rooms in"
@@ -452,19 +447,18 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
     )
 
     def __init__(self, hs):
-        super(ShutdownRoomRestServlet, self).__init__(hs)
+        self.hs = hs
         self.store = hs.get_datastore()
         self.state = hs.get_state_handler()
         self._room_creation_handler = hs.get_room_creation_handler()
         self.event_creation_handler = hs.get_event_creation_handler()
         self.room_member_handler = hs.get_room_member_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         content = parse_json_object_from_request(request)
         assert_params_in_dict(content, ["new_room_user_id"])
@@ -564,22 +558,20 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
         }))
 
 
-class QuarantineMediaInRoom(ClientV1RestServlet):
+class QuarantineMediaInRoom(RestServlet):
     """Quarantines all media in a room so that no one can download it via
     this server.
     """
-    PATTERNS = client_path_patterns("/admin/quarantine_media/(?P<room_id>[^/]+)")
+    PATTERNS = historical_admin_path_patterns("/quarantine_media/(?P<room_id>[^/]+)")
 
     def __init__(self, hs):
-        super(QuarantineMediaInRoom, self).__init__(hs)
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         num_quarantined = yield self.store.quarantine_media_ids_in_room(
             room_id, requester.user.to_string(),
@@ -588,13 +580,12 @@ class QuarantineMediaInRoom(ClientV1RestServlet):
         defer.returnValue((200, {"num_quarantined": num_quarantined}))
 
 
-class ListMediaInRoom(ClientV1RestServlet):
+class ListMediaInRoom(RestServlet):
     """Lists all of the media in a given room.
     """
-    PATTERNS = client_path_patterns("/admin/room/(?P<room_id>[^/]+)/media")
+    PATTERNS = historical_admin_path_patterns("/room/(?P<room_id>[^/]+)/media")
 
     def __init__(self, hs):
-        super(ListMediaInRoom, self).__init__(hs)
         self.store = hs.get_datastore()
 
     @defer.inlineCallbacks
@@ -609,11 +600,11 @@ class ListMediaInRoom(ClientV1RestServlet):
         defer.returnValue((200, {"local": local_mxcs, "remote": remote_mxcs}))
 
 
-class ResetPasswordRestServlet(ClientV1RestServlet):
+class ResetPasswordRestServlet(RestServlet):
     """Post request to allow an administrator reset password for a user.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/reset_password/
+            http://localhost:8008/_synapse/admin/v1/reset_password/
             @user:to_reset_password?access_token=admin_access_token
         JsonBodyToSend:
             {
@@ -622,11 +613,10 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         Returns:
             200 OK with empty object if success otherwise an error.
         """
-    PATTERNS = client_path_patterns("/admin/reset_password/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/reset_password/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(ResetPasswordRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self._set_password_handler = hs.get_set_password_handler()
@@ -636,12 +626,10 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         """Post request to allow an administrator reset password for a user.
         This needs user to have administrator access in Synapse.
         """
-        UserID.from_string(target_user_id)
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
+        yield assert_user_is_admin(self.auth, requester.user)
 
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        UserID.from_string(target_user_id)
 
         params = parse_json_object_from_request(request)
         assert_params_in_dict(params, ["new_password"])
@@ -653,20 +641,19 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-class GetUsersPaginatedRestServlet(ClientV1RestServlet):
+class GetUsersPaginatedRestServlet(RestServlet):
     """Get request to get specific number of users from Synapse.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/users_paginate/
+            http://localhost:8008/_synapse/admin/v1/users_paginate/
             @admin:user?access_token=admin_access_token&start=0&limit=10
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
         """
-    PATTERNS = client_path_patterns("/admin/users_paginate/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/users_paginate/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(GetUsersPaginatedRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
@@ -676,16 +663,9 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         """Get request to get specific number of users from Synapse.
         This needs user to have administrator access in Synapse.
         """
+        yield assert_requester_is_admin(self.auth, request)
+
         target_user = UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
-
-        # To allow all users to get the users list
-        # if not is_admin and target_user != auth_user:
-        #     raise AuthError(403, "You are not a server admin")
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only users a local user")
@@ -706,7 +686,7 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         """Post request to get specific number of users from Synapse..
         This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/users_paginate/
+            http://localhost:8008/_synapse/admin/v1/users_paginate/
             @admin:user?access_token=admin_access_token
         JsonBodyToSend:
             {
@@ -716,12 +696,8 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
         """
+        yield assert_requester_is_admin(self.auth, request)
         UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
 
         order = "name"  # order by name in user table
         params = parse_json_object_from_request(request)
@@ -736,21 +712,20 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class SearchUsersRestServlet(ClientV1RestServlet):
+class SearchUsersRestServlet(RestServlet):
     """Get request to search user table for specific users according to
     search term.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/search_users/
+            http://localhost:8008/_synapse/admin/v1/search_users/
             @admin:user?access_token=admin_access_token&term=alice
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
     """
-    PATTERNS = client_path_patterns("/admin/search_users/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/search_users/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(SearchUsersRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
@@ -761,12 +736,9 @@ class SearchUsersRestServlet(ClientV1RestServlet):
         search term.
         This needs user to have a administrator access in Synapse.
         """
-        target_user = UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
+        yield assert_requester_is_admin(self.auth, request)
 
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        target_user = UserID.from_string(target_user_id)
 
         # To allow all users to get the users list
         # if not is_admin and target_user != auth_user:
@@ -784,23 +756,20 @@ class SearchUsersRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class DeleteGroupAdminRestServlet(ClientV1RestServlet):
+class DeleteGroupAdminRestServlet(RestServlet):
     """Allows deleting of local groups
     """
-    PATTERNS = client_path_patterns("/admin/delete_group/(?P<group_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/delete_group/(?P<group_id>[^/]*)")
 
     def __init__(self, hs):
-        super(DeleteGroupAdminRestServlet, self).__init__(hs)
         self.group_server = hs.get_groups_server_handler()
         self.is_mine_id = hs.is_mine_id
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, group_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         if not self.is_mine_id(group_id):
             raise SynapseError(400, "Can only delete local groups")
@@ -809,7 +778,64 @@ class DeleteGroupAdminRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
+class AccountValidityRenewServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/account_validity/validity$")
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        yield assert_requester_is_admin(self.auth, request)
+
+        body = parse_json_object_from_request(request)
+
+        if "user_id" not in body:
+            raise SynapseError(400, "Missing property 'user_id' in the request body")
+
+        expiration_ts = yield self.account_activity_handler.renew_account_for_user(
+            body["user_id"], body.get("expiration_ts"),
+            not body.get("enable_renewal_emails", True),
+        )
+
+        res = {
+            "expiration_ts": expiration_ts,
+        }
+        defer.returnValue((200, res))
+
+########################################################################################
+#
+# please don't add more servlets here: this file is already long and unwieldy. Put
+# them in separate files within the 'admin' package.
+#
+########################################################################################
+
+
+class AdminRestResource(JsonResource):
+    """The REST resource which gets mounted at /_synapse/admin"""
+
+    def __init__(self, hs):
+        JsonResource.__init__(self, hs, canonical_json=False)
+        register_servlets(hs, self)
+
+
 def register_servlets(hs, http_server):
+    """
+    Register all the admin servlets.
+    """
+    register_servlets_for_client_rest_resource(hs, http_server)
+    SendServerNoticeServlet(hs).register(http_server)
+    VersionServlet(hs).register(http_server)
+
+
+def register_servlets_for_client_rest_resource(hs, http_server):
+    """Register only the servlets which need to be exposed on /_matrix/client/xxx"""
     WhoisRestServlet(hs).register(http_server)
     PurgeMediaCacheRestServlet(hs).register(http_server)
     PurgeHistoryStatusRestServlet(hs).register(http_server)
@@ -823,5 +849,7 @@ def register_servlets(hs, http_server):
     QuarantineMediaInRoom(hs).register(http_server)
     ListMediaInRoom(hs).register(http_server)
     UserRegisterServlet(hs).register(http_server)
-    VersionServlet(hs).register(http_server)
     DeleteGroupAdminRestServlet(hs).register(http_server)
+    AccountValidityRenewServlet(hs).register(http_server)
+    # don't add more things here: new servlets should only be exposed on
+    # /_synapse/admin so should not go here. Instead register them in AdminRestResource.
diff --git a/synapse/rest/admin/_base.py b/synapse/rest/admin/_base.py
new file mode 100644
index 0000000000..881d67b89c
--- /dev/null
+++ b/synapse/rest/admin/_base.py
@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from twisted.internet import defer
+
+from synapse.api.errors import AuthError
+
+
+@defer.inlineCallbacks
+def assert_requester_is_admin(auth, request):
+    """Verify that the requester is an admin user
+
+    WARNING: MAKE SURE YOU YIELD ON THE RESULT!
+
+    Args:
+        auth (synapse.api.auth.Auth):
+        request (twisted.web.server.Request): incoming request
+
+    Returns:
+        Deferred
+
+    Raises:
+        AuthError if the requester is not an admin
+    """
+    requester = yield auth.get_user_by_req(request)
+    yield assert_user_is_admin(auth, requester.user)
+
+
+@defer.inlineCallbacks
+def assert_user_is_admin(auth, user_id):
+    """Verify that the given user is an admin user
+
+    WARNING: MAKE SURE YOU YIELD ON THE RESULT!
+
+    Args:
+        auth (synapse.api.auth.Auth):
+        user_id (UserID):
+
+    Returns:
+        Deferred
+
+    Raises:
+        AuthError if the user is not an admin
+    """
+
+    is_admin = yield auth.is_server_admin(user_id)
+    if not is_admin:
+        raise AuthError(403, "You are not a server admin")
diff --git a/synapse/rest/admin/server_notice_servlet.py b/synapse/rest/admin/server_notice_servlet.py
new file mode 100644
index 0000000000..ae5aca9dac
--- /dev/null
+++ b/synapse/rest/admin/server_notice_servlet.py
@@ -0,0 +1,100 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import re
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes
+from synapse.api.errors import SynapseError
+from synapse.http.servlet import (
+    RestServlet,
+    assert_params_in_dict,
+    parse_json_object_from_request,
+)
+from synapse.rest.admin import assert_requester_is_admin
+from synapse.rest.client.transactions import HttpTransactionCache
+from synapse.types import UserID
+
+
+class SendServerNoticeServlet(RestServlet):
+    """Servlet which will send a server notice to a given user
+
+    POST /_synapse/admin/v1/send_server_notice
+    {
+        "user_id": "@target_user:server_name",
+        "content": {
+            "msgtype": "m.text",
+            "body": "This is my message"
+        }
+    }
+
+    returns:
+
+    {
+        "event_id": "$1895723857jgskldgujpious"
+    }
+    """
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.txns = HttpTransactionCache(hs)
+        self.snm = hs.get_server_notices_manager()
+
+    def register(self, json_resource):
+        PATTERN = "^/_synapse/admin/v1/send_server_notice"
+        json_resource.register_paths(
+            "POST",
+            (re.compile(PATTERN + "$"), ),
+            self.on_POST,
+        )
+        json_resource.register_paths(
+            "PUT",
+            (re.compile(PATTERN + "/(?P<txn_id>[^/]*)$",), ),
+            self.on_PUT,
+        )
+
+    @defer.inlineCallbacks
+    def on_POST(self, request, txn_id=None):
+        yield assert_requester_is_admin(self.auth, request)
+        body = parse_json_object_from_request(request)
+        assert_params_in_dict(body, ("user_id", "content"))
+        event_type = body.get("type", EventTypes.Message)
+        state_key = body.get("state_key")
+
+        if not self.snm.is_enabled():
+            raise SynapseError(400, "Server notices are not enabled on this server")
+
+        user_id = body["user_id"]
+        UserID.from_string(user_id)
+        if not self.hs.is_mine_id(user_id):
+            raise SynapseError(400, "Server notices can only be sent to local users")
+
+        event = yield self.snm.send_notice(
+            user_id=body["user_id"],
+            type=event_type,
+            state_key=state_key,
+            event_content=body["content"],
+        )
+
+        defer.returnValue((200, {"event_id": event.event_id}))
+
+    def on_PUT(self, request, txn_id):
+        return self.txns.fetch_or_execute_request(
+            request, self.on_POST, request, txn_id,
+        )
diff --git a/synapse/rest/client/v1/base.py b/synapse/rest/client/v1/base.py
deleted file mode 100644
index c77d7aba68..0000000000
--- a/synapse/rest/client/v1/base.py
+++ /dev/null
@@ -1,65 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2014-2016 OpenMarket Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""This module contains base REST classes for constructing client v1 servlets.
-"""
-
-import logging
-import re
-
-from synapse.api.urls import CLIENT_PREFIX
-from synapse.http.servlet import RestServlet
-from synapse.rest.client.transactions import HttpTransactionCache
-
-logger = logging.getLogger(__name__)
-
-
-def client_path_patterns(path_regex, releases=(0,), include_in_unstable=True):
-    """Creates a regex compiled client path with the correct client path
-    prefix.
-
-    Args:
-        path_regex (str): The regex string to match. This should NOT have a ^
-        as this will be prefixed.
-    Returns:
-        SRE_Pattern
-    """
-    patterns = [re.compile("^" + CLIENT_PREFIX + path_regex)]
-    if include_in_unstable:
-        unstable_prefix = CLIENT_PREFIX.replace("/api/v1", "/unstable")
-        patterns.append(re.compile("^" + unstable_prefix + path_regex))
-    for release in releases:
-        new_prefix = CLIENT_PREFIX.replace("/api/v1", "/r%d" % release)
-        patterns.append(re.compile("^" + new_prefix + path_regex))
-    return patterns
-
-
-class ClientV1RestServlet(RestServlet):
-    """A base Synapse REST Servlet for the client version 1 API.
-    """
-
-    # This subclass was presumably created to allow the auth for the v1
-    # protocol version to be different, however this behaviour was removed.
-    # it may no longer be necessary
-
-    def __init__(self, hs):
-        """
-        Args:
-            hs (synapse.server.HomeServer):
-        """
-        self.hs = hs
-        self.builder_factory = hs.get_event_builder_factory()
-        self.auth = hs.get_auth()
-        self.txns = HttpTransactionCache(hs)
diff --git a/synapse/rest/client/v1/directory.py b/synapse/rest/client/v1/directory.py
index 0220acf644..0035182bb9 100644
--- a/synapse/rest/client/v1/directory.py
+++ b/synapse/rest/client/v1/directory.py
@@ -19,11 +19,10 @@ import logging
 from twisted.internet import defer
 
 from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
-from synapse.http.servlet import parse_json_object_from_request
+from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.types import RoomAlias
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
@@ -33,13 +32,14 @@ def register_servlets(hs, http_server):
     ClientAppserviceDirectoryListServer(hs).register(http_server)
 
 
-class ClientDirectoryServer(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/directory/room/(?P<room_alias>[^/]*)$")
+class ClientDirectoryServer(RestServlet):
+    PATTERNS = client_patterns("/directory/room/(?P<room_alias>[^/]*)$", v1=True)
 
     def __init__(self, hs):
-        super(ClientDirectoryServer, self).__init__(hs)
+        super(ClientDirectoryServer, self).__init__()
         self.store = hs.get_datastore()
         self.handlers = hs.get_handlers()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_alias):
@@ -120,13 +120,14 @@ class ClientDirectoryServer(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-class ClientDirectoryListServer(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/directory/list/room/(?P<room_id>[^/]*)$")
+class ClientDirectoryListServer(RestServlet):
+    PATTERNS = client_patterns("/directory/list/room/(?P<room_id>[^/]*)$", v1=True)
 
     def __init__(self, hs):
-        super(ClientDirectoryListServer, self).__init__(hs)
+        super(ClientDirectoryListServer, self).__init__()
         self.store = hs.get_datastore()
         self.handlers = hs.get_handlers()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -162,15 +163,16 @@ class ClientDirectoryListServer(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-class ClientAppserviceDirectoryListServer(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/directory/list/appservice/(?P<network_id>[^/]*)/(?P<room_id>[^/]*)$"
+class ClientAppserviceDirectoryListServer(RestServlet):
+    PATTERNS = client_patterns(
+        "/directory/list/appservice/(?P<network_id>[^/]*)/(?P<room_id>[^/]*)$", v1=True
     )
 
     def __init__(self, hs):
-        super(ClientAppserviceDirectoryListServer, self).__init__(hs)
+        super(ClientAppserviceDirectoryListServer, self).__init__()
         self.store = hs.get_datastore()
         self.handlers = hs.get_handlers()
+        self.auth = hs.get_auth()
 
     def on_PUT(self, request, network_id, room_id):
         content = parse_json_object_from_request(request)
diff --git a/synapse/rest/client/v1/events.py b/synapse/rest/client/v1/events.py
index cd9b3bdbd1..84ca36270b 100644
--- a/synapse/rest/client/v1/events.py
+++ b/synapse/rest/client/v1/events.py
@@ -19,22 +19,22 @@ import logging
 from twisted.internet import defer
 
 from synapse.api.errors import SynapseError
-from synapse.events.utils import serialize_event
+from synapse.http.servlet import RestServlet
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.streams.config import PaginationConfig
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
-class EventStreamRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/events$")
+class EventStreamRestServlet(RestServlet):
+    PATTERNS = client_patterns("/events$", v1=True)
 
     DEFAULT_LONGPOLL_TIME_MS = 30000
 
     def __init__(self, hs):
-        super(EventStreamRestServlet, self).__init__(hs)
+        super(EventStreamRestServlet, self).__init__()
         self.event_stream_handler = hs.get_event_stream_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -77,13 +77,14 @@ class EventStreamRestServlet(ClientV1RestServlet):
 
 
 # TODO: Unit test gets, with and without auth, with different kinds of events.
-class EventRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/events/(?P<event_id>[^/]*)$")
+class EventRestServlet(RestServlet):
+    PATTERNS = client_patterns("/events/(?P<event_id>[^/]*)$", v1=True)
 
     def __init__(self, hs):
-        super(EventRestServlet, self).__init__(hs)
+        super(EventRestServlet, self).__init__()
         self.clock = hs.get_clock()
         self.event_handler = hs.get_event_handler()
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     def on_GET(self, request, event_id):
@@ -92,7 +93,8 @@ class EventRestServlet(ClientV1RestServlet):
 
         time_now = self.clock.time_msec()
         if event:
-            defer.returnValue((200, serialize_event(event, time_now)))
+            event = yield self._event_serializer.serialize_event(event, time_now)
+            defer.returnValue((200, event))
         else:
             defer.returnValue((404, "Event not found."))
 
diff --git a/synapse/rest/client/v1/initial_sync.py b/synapse/rest/client/v1/initial_sync.py
index 3ead75cb77..0fe5f2d79b 100644
--- a/synapse/rest/client/v1/initial_sync.py
+++ b/synapse/rest/client/v1/initial_sync.py
@@ -15,19 +15,19 @@
 
 from twisted.internet import defer
 
-from synapse.http.servlet import parse_boolean
+from synapse.http.servlet import RestServlet, parse_boolean
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.streams.config import PaginationConfig
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 
 # TODO: Needs unit testing
-class InitialSyncRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/initialSync$")
+class InitialSyncRestServlet(RestServlet):
+    PATTERNS = client_patterns("/initialSync$", v1=True)
 
     def __init__(self, hs):
-        super(InitialSyncRestServlet, self).__init__(hs)
+        super(InitialSyncRestServlet, self).__init__()
         self.initial_sync_handler = hs.get_initial_sync_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index 5180e9eaf1..3b60728628 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -29,12 +29,11 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
     parse_string,
 )
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.rest.well_known import WellKnownBuilder
 from synapse.types import UserID, map_username_to_mxid_localpart
 from synapse.util.msisdn import phone_number_to_msisdn
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
@@ -81,15 +80,16 @@ def login_id_thirdparty_from_phone(identifier):
     }
 
 
-class LoginRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/login$")
+class LoginRestServlet(RestServlet):
+    PATTERNS = client_patterns("/login$", v1=True)
     CAS_TYPE = "m.login.cas"
     SSO_TYPE = "m.login.sso"
     TOKEN_TYPE = "m.login.token"
     JWT_TYPE = "m.login.jwt"
 
     def __init__(self, hs):
-        super(LoginRestServlet, self).__init__(hs)
+        super(LoginRestServlet, self).__init__()
+        self.hs = hs
         self.jwt_enabled = hs.config.jwt_enabled
         self.jwt_secret = hs.config.jwt_secret
         self.jwt_algorithm = hs.config.jwt_algorithm
@@ -371,7 +371,7 @@ class LoginRestServlet(ClientV1RestServlet):
 
 
 class CasRedirectServlet(RestServlet):
-    PATTERNS = client_path_patterns("/login/(cas|sso)/redirect")
+    PATTERNS = client_patterns("/login/(cas|sso)/redirect", v1=True)
 
     def __init__(self, hs):
         super(CasRedirectServlet, self).__init__()
@@ -386,7 +386,7 @@ class CasRedirectServlet(RestServlet):
             b"redirectUrl": args[b"redirectUrl"][0]
         }).encode('ascii')
         hs_redirect_url = (self.cas_service_url +
-                           b"/_matrix/client/api/v1/login/cas/ticket")
+                           b"/_matrix/client/r0/login/cas/ticket")
         service_param = urllib.parse.urlencode({
             b"service": b"%s?%s" % (hs_redirect_url, client_redirect_url_param)
         }).encode('ascii')
@@ -394,27 +394,27 @@ class CasRedirectServlet(RestServlet):
         finish_request(request)
 
 
-class CasTicketServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/login/cas/ticket", releases=())
+class CasTicketServlet(RestServlet):
+    PATTERNS = client_patterns("/login/cas/ticket", v1=True)
 
     def __init__(self, hs):
-        super(CasTicketServlet, self).__init__(hs)
+        super(CasTicketServlet, self).__init__()
         self.cas_server_url = hs.config.cas_server_url
         self.cas_service_url = hs.config.cas_service_url
         self.cas_required_attributes = hs.config.cas_required_attributes
         self._sso_auth_handler = SSOAuthHandler(hs)
+        self._http_client = hs.get_simple_http_client()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
         client_redirect_url = parse_string(request, "redirectUrl", required=True)
-        http_client = self.hs.get_simple_http_client()
         uri = self.cas_server_url + "/proxyValidate"
         args = {
             "ticket": parse_string(request, "ticket", required=True),
             "service": self.cas_service_url
         }
         try:
-            body = yield http_client.get_raw(uri, args)
+            body = yield self._http_client.get_raw(uri, args)
         except PartialDownloadError as pde:
             # Twisted raises this error if the connection is closed,
             # even if that's being used old-http style to signal end-of-data
diff --git a/synapse/rest/client/v1/logout.py b/synapse/rest/client/v1/logout.py
index 430c692336..b8064f261e 100644
--- a/synapse/rest/client/v1/logout.py
+++ b/synapse/rest/client/v1/logout.py
@@ -17,19 +17,18 @@ import logging
 
 from twisted.internet import defer
 
-from synapse.api.errors import AuthError
-
-from .base import ClientV1RestServlet, client_path_patterns
+from synapse.http.servlet import RestServlet
+from synapse.rest.client.v2_alpha._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
-class LogoutRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/logout$")
+class LogoutRestServlet(RestServlet):
+    PATTERNS = client_patterns("/logout$", v1=True)
 
     def __init__(self, hs):
-        super(LogoutRestServlet, self).__init__(hs)
-        self._auth = hs.get_auth()
+        super(LogoutRestServlet, self).__init__()
+        self.auth = hs.get_auth()
         self._auth_handler = hs.get_auth_handler()
         self._device_handler = hs.get_device_handler()
 
@@ -38,32 +37,25 @@ class LogoutRestServlet(ClientV1RestServlet):
 
     @defer.inlineCallbacks
     def on_POST(self, request):
-        try:
-            requester = yield self.auth.get_user_by_req(request)
-        except AuthError:
-            # this implies the access token has already been deleted.
-            defer.returnValue((401, {
-                "errcode": "M_UNKNOWN_TOKEN",
-                "error": "Access Token unknown or expired"
-            }))
+        requester = yield self.auth.get_user_by_req(request)
+
+        if requester.device_id is None:
+            # the acccess token wasn't associated with a device.
+            # Just delete the access token
+            access_token = self.auth.get_access_token_from_request(request)
+            yield self._auth_handler.delete_access_token(access_token)
         else:
-            if requester.device_id is None:
-                # the acccess token wasn't associated with a device.
-                # Just delete the access token
-                access_token = self._auth.get_access_token_from_request(request)
-                yield self._auth_handler.delete_access_token(access_token)
-            else:
-                yield self._device_handler.delete_device(
-                    requester.user.to_string(), requester.device_id)
+            yield self._device_handler.delete_device(
+                requester.user.to_string(), requester.device_id)
 
         defer.returnValue((200, {}))
 
 
-class LogoutAllRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/logout/all$")
+class LogoutAllRestServlet(RestServlet):
+    PATTERNS = client_patterns("/logout/all$", v1=True)
 
     def __init__(self, hs):
-        super(LogoutAllRestServlet, self).__init__(hs)
+        super(LogoutAllRestServlet, self).__init__()
         self.auth = hs.get_auth()
         self._auth_handler = hs.get_auth_handler()
         self._device_handler = hs.get_device_handler()
diff --git a/synapse/rest/client/v1/presence.py b/synapse/rest/client/v1/presence.py
index 045d5a20ac..e263da3cb7 100644
--- a/synapse/rest/client/v1/presence.py
+++ b/synapse/rest/client/v1/presence.py
@@ -23,21 +23,22 @@ from twisted.internet import defer
 
 from synapse.api.errors import AuthError, SynapseError
 from synapse.handlers.presence import format_user_presence_state
-from synapse.http.servlet import parse_json_object_from_request
+from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.types import UserID
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
-class PresenceStatusRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/presence/(?P<user_id>[^/]*)/status")
+class PresenceStatusRestServlet(RestServlet):
+    PATTERNS = client_patterns("/presence/(?P<user_id>[^/]*)/status", v1=True)
 
     def __init__(self, hs):
-        super(PresenceStatusRestServlet, self).__init__(hs)
+        super(PresenceStatusRestServlet, self).__init__()
+        self.hs = hs
         self.presence_handler = hs.get_presence_handler()
         self.clock = hs.get_clock()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
diff --git a/synapse/rest/client/v1/profile.py b/synapse/rest/client/v1/profile.py
index a23edd8fe5..e15d9d82a6 100644
--- a/synapse/rest/client/v1/profile.py
+++ b/synapse/rest/client/v1/profile.py
@@ -16,26 +16,33 @@
 """ This module contains REST servlets to do with profile: /profile/<paths> """
 from twisted.internet import defer
 
-from synapse.http.servlet import parse_json_object_from_request
+from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.types import UserID
 
-from .base import ClientV1RestServlet, client_path_patterns
 
-
-class ProfileDisplaynameRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)/displayname")
+class ProfileDisplaynameRestServlet(RestServlet):
+    PATTERNS = client_patterns("/profile/(?P<user_id>[^/]*)/displayname", v1=True)
 
     def __init__(self, hs):
-        super(ProfileDisplaynameRestServlet, self).__init__(hs)
+        super(ProfileDisplaynameRestServlet, self).__init__()
+        self.hs = hs
         self.profile_handler = hs.get_profile_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
+        requester_user = None
+
+        if self.hs.config.require_auth_for_profile_requests:
+            requester = yield self.auth.get_user_by_req(request)
+            requester_user = requester.user
+
         user = UserID.from_string(user_id)
 
-        displayname = yield self.profile_handler.get_displayname(
-            user,
-        )
+        yield self.profile_handler.check_profile_query_allowed(user, requester_user)
+
+        displayname = yield self.profile_handler.get_displayname(user)
 
         ret = {}
         if displayname is not None:
@@ -65,20 +72,28 @@ class ProfileDisplaynameRestServlet(ClientV1RestServlet):
         return (200, {})
 
 
-class ProfileAvatarURLRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)/avatar_url")
+class ProfileAvatarURLRestServlet(RestServlet):
+    PATTERNS = client_patterns("/profile/(?P<user_id>[^/]*)/avatar_url", v1=True)
 
     def __init__(self, hs):
-        super(ProfileAvatarURLRestServlet, self).__init__(hs)
+        super(ProfileAvatarURLRestServlet, self).__init__()
+        self.hs = hs
         self.profile_handler = hs.get_profile_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
+        requester_user = None
+
+        if self.hs.config.require_auth_for_profile_requests:
+            requester = yield self.auth.get_user_by_req(request)
+            requester_user = requester.user
+
         user = UserID.from_string(user_id)
 
-        avatar_url = yield self.profile_handler.get_avatar_url(
-            user,
-        )
+        yield self.profile_handler.check_profile_query_allowed(user, requester_user)
+
+        avatar_url = yield self.profile_handler.get_avatar_url(user)
 
         ret = {}
         if avatar_url is not None:
@@ -107,23 +122,29 @@ class ProfileAvatarURLRestServlet(ClientV1RestServlet):
         return (200, {})
 
 
-class ProfileRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)")
+class ProfileRestServlet(RestServlet):
+    PATTERNS = client_patterns("/profile/(?P<user_id>[^/]*)", v1=True)
 
     def __init__(self, hs):
-        super(ProfileRestServlet, self).__init__(hs)
+        super(ProfileRestServlet, self).__init__()
+        self.hs = hs
         self.profile_handler = hs.get_profile_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
+        requester_user = None
+
+        if self.hs.config.require_auth_for_profile_requests:
+            requester = yield self.auth.get_user_by_req(request)
+            requester_user = requester.user
+
         user = UserID.from_string(user_id)
 
-        displayname = yield self.profile_handler.get_displayname(
-            user,
-        )
-        avatar_url = yield self.profile_handler.get_avatar_url(
-            user,
-        )
+        yield self.profile_handler.check_profile_query_allowed(user, requester_user)
+
+        displayname = yield self.profile_handler.get_displayname(user)
+        avatar_url = yield self.profile_handler.get_avatar_url(user)
 
         ret = {}
         if displayname is not None:
diff --git a/synapse/rest/client/v1/push_rule.py b/synapse/rest/client/v1/push_rule.py
index c654f9b5f0..3d6326fe2f 100644
--- a/synapse/rest/client/v1/push_rule.py
+++ b/synapse/rest/client/v1/push_rule.py
@@ -21,28 +21,32 @@ from synapse.api.errors import (
     SynapseError,
     UnrecognizedRequestError,
 )
-from synapse.http.servlet import parse_json_value_from_request, parse_string
+from synapse.http.servlet import RestServlet, parse_json_value_from_request, parse_string
 from synapse.push.baserules import BASE_RULE_IDS
 from synapse.push.clientformat import format_push_rules_for_user
 from synapse.push.rulekinds import PRIORITY_CLASS_MAP
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.storage.push_rule import InconsistentRuleException, RuleNotFoundException
 
-from .base import ClientV1RestServlet, client_path_patterns
 
-
-class PushRuleRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/pushrules/.*$")
+class PushRuleRestServlet(RestServlet):
+    PATTERNS = client_patterns("/(?P<path>pushrules/.*)$", v1=True)
     SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = (
         "Unrecognised request: You probably wanted a trailing slash")
 
     def __init__(self, hs):
-        super(PushRuleRestServlet, self).__init__(hs)
+        super(PushRuleRestServlet, self).__init__()
+        self.auth = hs.get_auth()
         self.store = hs.get_datastore()
         self.notifier = hs.get_notifier()
+        self._is_worker = hs.config.worker_app is not None
 
     @defer.inlineCallbacks
-    def on_PUT(self, request):
-        spec = _rule_spec_from_path([x.decode('utf8') for x in request.postpath])
+    def on_PUT(self, request, path):
+        if self._is_worker:
+            raise Exception("Cannot handle PUT /push_rules on worker")
+
+        spec = _rule_spec_from_path([x for x in path.split("/")])
         try:
             priority_class = _priority_class_from_spec(spec)
         except InvalidRuleException as e:
@@ -102,8 +106,11 @@ class PushRuleRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
     @defer.inlineCallbacks
-    def on_DELETE(self, request):
-        spec = _rule_spec_from_path([x.decode('utf8') for x in request.postpath])
+    def on_DELETE(self, request, path):
+        if self._is_worker:
+            raise Exception("Cannot handle DELETE /push_rules on worker")
+
+        spec = _rule_spec_from_path([x for x in path.split("/")])
 
         requester = yield self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
@@ -123,7 +130,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
                 raise
 
     @defer.inlineCallbacks
-    def on_GET(self, request):
+    def on_GET(self, request, path):
         requester = yield self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
 
@@ -134,7 +141,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
 
         rules = format_push_rules_for_user(requester.user, rules)
 
-        path = [x.decode('utf8') for x in request.postpath][1:]
+        path = [x for x in path.split("/")][1:]
 
         if path == []:
             # we're a reference impl: pedantry is our job.
@@ -150,7 +157,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
         else:
             raise UnrecognizedRequestError()
 
-    def on_OPTIONS(self, _):
+    def on_OPTIONS(self, request, path):
         return 200, {}
 
     def notify_user(self, user_id):
diff --git a/synapse/rest/client/v1/pusher.py b/synapse/rest/client/v1/pusher.py
index 4c07ae7f45..15d860db37 100644
--- a/synapse/rest/client/v1/pusher.py
+++ b/synapse/rest/client/v1/pusher.py
@@ -26,17 +26,18 @@ from synapse.http.servlet import (
     parse_string,
 )
 from synapse.push import PusherConfigException
-
-from .base import ClientV1RestServlet, client_path_patterns
+from synapse.rest.client.v2_alpha._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
-class PushersRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/pushers$")
+class PushersRestServlet(RestServlet):
+    PATTERNS = client_patterns("/pushers$", v1=True)
 
     def __init__(self, hs):
-        super(PushersRestServlet, self).__init__(hs)
+        super(PushersRestServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -69,11 +70,13 @@ class PushersRestServlet(ClientV1RestServlet):
         return 200, {}
 
 
-class PushersSetRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/pushers/set$")
+class PushersSetRestServlet(RestServlet):
+    PATTERNS = client_patterns("/pushers/set$", v1=True)
 
     def __init__(self, hs):
-        super(PushersSetRestServlet, self).__init__(hs)
+        super(PushersSetRestServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
         self.notifier = hs.get_notifier()
         self.pusher_pool = self.hs.get_pusherpool()
 
@@ -141,7 +144,7 @@ class PushersRemoveRestServlet(RestServlet):
     """
     To allow pusher to be delete by clicking a link (ie. GET request)
     """
-    PATTERNS = client_path_patterns("/pushers/remove$")
+    PATTERNS = client_patterns("/pushers/remove$", v1=True)
     SUCCESS_HTML = b"<html><body>You have been unsubscribed</body><html>"
 
     def __init__(self, hs):
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 48da4d557f..e8f672c4ba 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -26,39 +26,47 @@ from twisted.internet import defer
 from synapse.api.constants import EventTypes, Membership
 from synapse.api.errors import AuthError, Codes, SynapseError
 from synapse.api.filtering import Filter
-from synapse.events.utils import format_event_for_client_v2, serialize_event
+from synapse.events.utils import format_event_for_client_v2
 from synapse.http.servlet import (
+    RestServlet,
     assert_params_in_dict,
     parse_integer,
     parse_json_object_from_request,
     parse_string,
 )
+from synapse.rest.client.transactions import HttpTransactionCache
+from synapse.rest.client.v2_alpha._base import client_patterns
 from synapse.storage.state import StateFilter
 from synapse.streams.config import PaginationConfig
 from synapse.types import RoomAlias, RoomID, StreamToken, ThirdPartyInstanceID, UserID
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
-class RoomCreateRestServlet(ClientV1RestServlet):
+class TransactionRestServlet(RestServlet):
+    def __init__(self, hs):
+        super(TransactionRestServlet, self).__init__()
+        self.txns = HttpTransactionCache(hs)
+
+
+class RoomCreateRestServlet(TransactionRestServlet):
     # No PATTERN; we have custom dispatch rules here
 
     def __init__(self, hs):
         super(RoomCreateRestServlet, self).__init__(hs)
         self._room_creation_handler = hs.get_room_creation_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         PATTERNS = "/createRoom"
         register_txn_path(self, PATTERNS, http_server)
         # define CORS for all of /rooms in RoomCreateRestServlet for simplicity
         http_server.register_paths("OPTIONS",
-                                   client_path_patterns("/rooms(?:/.*)?$"),
+                                   client_patterns("/rooms(?:/.*)?$", v1=True),
                                    self.on_OPTIONS)
         # define CORS for /createRoom[/txnid]
         http_server.register_paths("OPTIONS",
-                                   client_path_patterns("/createRoom(?:/.*)?$"),
+                                   client_patterns("/createRoom(?:/.*)?$", v1=True),
                                    self.on_OPTIONS)
 
     def on_PUT(self, request, txn_id):
@@ -85,13 +93,14 @@ class RoomCreateRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing for generic events
-class RoomStateEventRestServlet(ClientV1RestServlet):
+class RoomStateEventRestServlet(TransactionRestServlet):
     def __init__(self, hs):
         super(RoomStateEventRestServlet, self).__init__(hs)
         self.handlers = hs.get_handlers()
         self.event_creation_handler = hs.get_event_creation_handler()
         self.room_member_handler = hs.get_room_member_handler()
         self.message_handler = hs.get_message_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         # /room/$roomid/state/$eventtype
@@ -102,16 +111,16 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
                      "(?P<event_type>[^/]*)/(?P<state_key>[^/]*)$")
 
         http_server.register_paths("GET",
-                                   client_path_patterns(state_key),
+                                   client_patterns(state_key, v1=True),
                                    self.on_GET)
         http_server.register_paths("PUT",
-                                   client_path_patterns(state_key),
+                                   client_patterns(state_key, v1=True),
                                    self.on_PUT)
         http_server.register_paths("GET",
-                                   client_path_patterns(no_state_key),
+                                   client_patterns(no_state_key, v1=True),
                                    self.on_GET_no_state_key)
         http_server.register_paths("PUT",
-                                   client_path_patterns(no_state_key),
+                                   client_patterns(no_state_key, v1=True),
                                    self.on_PUT_no_state_key)
 
     def on_GET_no_state_key(self, request, room_id, event_type):
@@ -185,11 +194,12 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing for generic events + feedback
-class RoomSendEventRestServlet(ClientV1RestServlet):
+class RoomSendEventRestServlet(TransactionRestServlet):
 
     def __init__(self, hs):
         super(RoomSendEventRestServlet, self).__init__(hs)
         self.event_creation_handler = hs.get_event_creation_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         # /rooms/$roomid/send/$event_type[/$txn_id]
@@ -229,10 +239,11 @@ class RoomSendEventRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing for room ID + alias joins
-class JoinRoomAliasServlet(ClientV1RestServlet):
+class JoinRoomAliasServlet(TransactionRestServlet):
     def __init__(self, hs):
         super(JoinRoomAliasServlet, self).__init__(hs)
         self.room_member_handler = hs.get_room_member_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         # /join/$room_identifier[/$txn_id]
@@ -291,8 +302,13 @@ class JoinRoomAliasServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing
-class PublicRoomListRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/publicRooms$")
+class PublicRoomListRestServlet(TransactionRestServlet):
+    PATTERNS = client_patterns("/publicRooms$", v1=True)
+
+    def __init__(self, hs):
+        super(PublicRoomListRestServlet, self).__init__(hs)
+        self.hs = hs
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -301,6 +317,12 @@ class PublicRoomListRestServlet(ClientV1RestServlet):
         try:
             yield self.auth.get_user_by_req(request, allow_guest=True)
         except AuthError as e:
+            # Option to allow servers to require auth when accessing
+            # /publicRooms via CS API. This is especially helpful in private
+            # federations.
+            if self.hs.config.restrict_public_rooms_to_local_users:
+                raise
+
             # We allow people to not be authed if they're just looking at our
             # room list, but require auth when we proxy the request.
             # In both cases we call the auth function, as that has the side
@@ -376,12 +398,13 @@ class PublicRoomListRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing
-class RoomMemberListRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/members$")
+class RoomMemberListRestServlet(RestServlet):
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/members$", v1=True)
 
     def __init__(self, hs):
-        super(RoomMemberListRestServlet, self).__init__(hs)
+        super(RoomMemberListRestServlet, self).__init__()
         self.message_handler = hs.get_message_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -430,12 +453,13 @@ class RoomMemberListRestServlet(ClientV1RestServlet):
 
 # deprecated in favour of /members?membership=join?
 # except it does custom AS logic and has a simpler return format
-class JoinedRoomMemberListRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/joined_members$")
+class JoinedRoomMemberListRestServlet(RestServlet):
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/joined_members$", v1=True)
 
     def __init__(self, hs):
-        super(JoinedRoomMemberListRestServlet, self).__init__(hs)
+        super(JoinedRoomMemberListRestServlet, self).__init__()
         self.message_handler = hs.get_message_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -451,12 +475,13 @@ class JoinedRoomMemberListRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs better unit testing
-class RoomMessageListRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/messages$")
+class RoomMessageListRestServlet(RestServlet):
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/messages$", v1=True)
 
     def __init__(self, hs):
-        super(RoomMessageListRestServlet, self).__init__(hs)
+        super(RoomMessageListRestServlet, self).__init__()
         self.pagination_handler = hs.get_pagination_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -469,6 +494,8 @@ class RoomMessageListRestServlet(ClientV1RestServlet):
         if filter_bytes:
             filter_json = urlparse.unquote(filter_bytes.decode("UTF-8"))
             event_filter = Filter(json.loads(filter_json))
+            if event_filter.filter_json.get("event_format", "client") == "federation":
+                as_client_event = False
         else:
             event_filter = None
         msgs = yield self.pagination_handler.get_messages(
@@ -483,12 +510,13 @@ class RoomMessageListRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing
-class RoomStateRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/state$")
+class RoomStateRestServlet(RestServlet):
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/state$", v1=True)
 
     def __init__(self, hs):
-        super(RoomStateRestServlet, self).__init__(hs)
+        super(RoomStateRestServlet, self).__init__()
         self.message_handler = hs.get_message_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -503,12 +531,13 @@ class RoomStateRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing
-class RoomInitialSyncRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/initialSync$")
+class RoomInitialSyncRestServlet(RestServlet):
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/initialSync$", v1=True)
 
     def __init__(self, hs):
-        super(RoomInitialSyncRestServlet, self).__init__(hs)
+        super(RoomInitialSyncRestServlet, self).__init__()
         self.initial_sync_handler = hs.get_initial_sync_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -522,15 +551,17 @@ class RoomInitialSyncRestServlet(ClientV1RestServlet):
         defer.returnValue((200, content))
 
 
-class RoomEventServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/rooms/(?P<room_id>[^/]*)/event/(?P<event_id>[^/]*)$"
+class RoomEventServlet(RestServlet):
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/event/(?P<event_id>[^/]*)$", v1=True
     )
 
     def __init__(self, hs):
-        super(RoomEventServlet, self).__init__(hs)
+        super(RoomEventServlet, self).__init__()
         self.clock = hs.get_clock()
         self.event_handler = hs.get_event_handler()
+        self._event_serializer = hs.get_event_client_serializer()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id, event_id):
@@ -539,20 +570,23 @@ class RoomEventServlet(ClientV1RestServlet):
 
         time_now = self.clock.time_msec()
         if event:
-            defer.returnValue((200, serialize_event(event, time_now)))
+            event = yield self._event_serializer.serialize_event(event, time_now)
+            defer.returnValue((200, event))
         else:
             defer.returnValue((404, "Event not found."))
 
 
-class RoomEventContextServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$"
+class RoomEventContextServlet(RestServlet):
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$", v1=True
     )
 
     def __init__(self, hs):
-        super(RoomEventContextServlet, self).__init__(hs)
+        super(RoomEventContextServlet, self).__init__()
         self.clock = hs.get_clock()
         self.room_context_handler = hs.get_room_context_handler()
+        self._event_serializer = hs.get_event_client_serializer()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id, event_id):
@@ -582,24 +616,27 @@ class RoomEventContextServlet(ClientV1RestServlet):
             )
 
         time_now = self.clock.time_msec()
-        results["events_before"] = [
-            serialize_event(event, time_now) for event in results["events_before"]
-        ]
-        results["event"] = serialize_event(results["event"], time_now)
-        results["events_after"] = [
-            serialize_event(event, time_now) for event in results["events_after"]
-        ]
-        results["state"] = [
-            serialize_event(event, time_now) for event in results["state"]
-        ]
+        results["events_before"] = yield self._event_serializer.serialize_events(
+            results["events_before"], time_now,
+        )
+        results["event"] = yield self._event_serializer.serialize_event(
+            results["event"], time_now,
+        )
+        results["events_after"] = yield self._event_serializer.serialize_events(
+            results["events_after"], time_now,
+        )
+        results["state"] = yield self._event_serializer.serialize_events(
+            results["state"], time_now,
+        )
 
         defer.returnValue((200, results))
 
 
-class RoomForgetRestServlet(ClientV1RestServlet):
+class RoomForgetRestServlet(TransactionRestServlet):
     def __init__(self, hs):
         super(RoomForgetRestServlet, self).__init__(hs)
         self.room_member_handler = hs.get_room_member_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         PATTERNS = ("/rooms/(?P<room_id>[^/]*)/forget")
@@ -626,11 +663,12 @@ class RoomForgetRestServlet(ClientV1RestServlet):
 
 
 # TODO: Needs unit testing
-class RoomMembershipRestServlet(ClientV1RestServlet):
+class RoomMembershipRestServlet(TransactionRestServlet):
 
     def __init__(self, hs):
         super(RoomMembershipRestServlet, self).__init__(hs)
         self.room_member_handler = hs.get_room_member_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         # /rooms/$roomid/[invite|join|leave]
@@ -709,11 +747,12 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
         )
 
 
-class RoomRedactEventRestServlet(ClientV1RestServlet):
+class RoomRedactEventRestServlet(TransactionRestServlet):
     def __init__(self, hs):
         super(RoomRedactEventRestServlet, self).__init__(hs)
         self.handlers = hs.get_handlers()
         self.event_creation_handler = hs.get_event_creation_handler()
+        self.auth = hs.get_auth()
 
     def register(self, http_server):
         PATTERNS = ("/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)")
@@ -744,15 +783,16 @@ class RoomRedactEventRestServlet(ClientV1RestServlet):
         )
 
 
-class RoomTypingRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/rooms/(?P<room_id>[^/]*)/typing/(?P<user_id>[^/]*)$"
+class RoomTypingRestServlet(RestServlet):
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/typing/(?P<user_id>[^/]*)$", v1=True
     )
 
     def __init__(self, hs):
-        super(RoomTypingRestServlet, self).__init__(hs)
+        super(RoomTypingRestServlet, self).__init__()
         self.presence_handler = hs.get_presence_handler()
         self.typing_handler = hs.get_typing_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_PUT(self, request, room_id, user_id):
@@ -785,14 +825,13 @@ class RoomTypingRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-class SearchRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/search$"
-    )
+class SearchRestServlet(RestServlet):
+    PATTERNS = client_patterns("/search$", v1=True)
 
     def __init__(self, hs):
-        super(SearchRestServlet, self).__init__(hs)
+        super(SearchRestServlet, self).__init__()
         self.handlers = hs.get_handlers()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -810,12 +849,13 @@ class SearchRestServlet(ClientV1RestServlet):
         defer.returnValue((200, results))
 
 
-class JoinedRoomsRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/joined_rooms$")
+class JoinedRoomsRestServlet(RestServlet):
+    PATTERNS = client_patterns("/joined_rooms$", v1=True)
 
     def __init__(self, hs):
-        super(JoinedRoomsRestServlet, self).__init__(hs)
+        super(JoinedRoomsRestServlet, self).__init__()
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -840,18 +880,18 @@ def register_txn_path(servlet, regex_string, http_server, with_get=False):
     """
     http_server.register_paths(
         "POST",
-        client_path_patterns(regex_string + "$"),
+        client_patterns(regex_string + "$", v1=True),
         servlet.on_POST
     )
     http_server.register_paths(
         "PUT",
-        client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
+        client_patterns(regex_string + "/(?P<txn_id>[^/]*)$", v1=True),
         servlet.on_PUT
     )
     if with_get:
         http_server.register_paths(
             "GET",
-            client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
+            client_patterns(regex_string + "/(?P<txn_id>[^/]*)$", v1=True),
             servlet.on_GET
         )
 
diff --git a/synapse/rest/client/v1/voip.py b/synapse/rest/client/v1/voip.py
index 53da905eea..6381049210 100644
--- a/synapse/rest/client/v1/voip.py
+++ b/synapse/rest/client/v1/voip.py
@@ -19,11 +19,17 @@ import hmac
 
 from twisted.internet import defer
 
-from .base import ClientV1RestServlet, client_path_patterns
+from synapse.http.servlet import RestServlet
+from synapse.rest.client.v2_alpha._base import client_patterns
 
 
-class VoipRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/voip/turnServer$")
+class VoipRestServlet(RestServlet):
+    PATTERNS = client_patterns("/voip/turnServer$", v1=True)
+
+    def __init__(self, hs):
+        super(VoipRestServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
diff --git a/synapse/rest/client/v2_alpha/_base.py b/synapse/rest/client/v2_alpha/_base.py
index 77434937ff..5236d5d566 100644
--- a/synapse/rest/client/v2_alpha/_base.py
+++ b/synapse/rest/client/v2_alpha/_base.py
@@ -21,14 +21,12 @@ import re
 from twisted.internet import defer
 
 from synapse.api.errors import InteractiveAuthIncompleteError
-from synapse.api.urls import CLIENT_V2_ALPHA_PREFIX
+from synapse.api.urls import CLIENT_API_PREFIX
 
 logger = logging.getLogger(__name__)
 
 
-def client_v2_patterns(path_regex, releases=(0,),
-                       v2_alpha=True,
-                       unstable=True):
+def client_patterns(path_regex, releases=(0,), unstable=True, v1=False):
     """Creates a regex compiled client path with the correct client path
     prefix.
 
@@ -39,13 +37,14 @@ def client_v2_patterns(path_regex, releases=(0,),
         SRE_Pattern
     """
     patterns = []
-    if v2_alpha:
-        patterns.append(re.compile("^" + CLIENT_V2_ALPHA_PREFIX + path_regex))
     if unstable:
-        unstable_prefix = CLIENT_V2_ALPHA_PREFIX.replace("/v2_alpha", "/unstable")
+        unstable_prefix = CLIENT_API_PREFIX + "/unstable"
         patterns.append(re.compile("^" + unstable_prefix + path_regex))
+    if v1:
+        v1_prefix = CLIENT_API_PREFIX + "/api/v1"
+        patterns.append(re.compile("^" + v1_prefix + path_regex))
     for release in releases:
-        new_prefix = CLIENT_V2_ALPHA_PREFIX.replace("/v2_alpha", "/r%d" % release)
+        new_prefix = CLIENT_API_PREFIX + "/r%d" % (release,)
         patterns.append(re.compile("^" + new_prefix + path_regex))
     return patterns
 
diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index ee069179f0..ab75f6c2b2 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -18,40 +18,76 @@ import logging
 
 from six.moves import http_client
 
+import jinja2
+
 from twisted.internet import defer
 
 from synapse.api.constants import LoginType
-from synapse.api.errors import Codes, SynapseError
+from synapse.api.errors import Codes, SynapseError, ThreepidValidationError
+from synapse.http.server import finish_request
 from synapse.http.servlet import (
     RestServlet,
     assert_params_in_dict,
     parse_json_object_from_request,
+    parse_string,
 )
 from synapse.util.msisdn import phone_number_to_msisdn
+from synapse.util.stringutils import random_string
 from synapse.util.threepids import check_3pid_allowed
 
-from ._base import client_v2_patterns, interactive_auth_handler
+from ._base import client_patterns, interactive_auth_handler
 
 logger = logging.getLogger(__name__)
 
 
 class EmailPasswordRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/password/email/requestToken$")
+    PATTERNS = client_patterns("/account/password/email/requestToken$")
 
     def __init__(self, hs):
         super(EmailPasswordRequestTokenRestServlet, self).__init__()
         self.hs = hs
+        self.datastore = hs.get_datastore()
+        self.config = hs.config
         self.identity_handler = hs.get_handlers().identity_handler
 
+        if self.config.email_password_reset_behaviour == "local":
+            from synapse.push.mailer import Mailer, load_jinja2_templates
+            templates = load_jinja2_templates(
+                config=hs.config,
+                template_html_name=hs.config.email_password_reset_template_html,
+                template_text_name=hs.config.email_password_reset_template_text,
+            )
+            self.mailer = Mailer(
+                hs=self.hs,
+                app_name=self.config.email_app_name,
+                template_html=templates[0],
+                template_text=templates[1],
+            )
+
     @defer.inlineCallbacks
     def on_POST(self, request):
+        if self.config.email_password_reset_behaviour == "off":
+            if self.config.password_resets_were_disabled_due_to_email_config:
+                logger.warn(
+                    "User password resets have been disabled due to lack of email config"
+                )
+            raise SynapseError(
+                400, "Email-based password resets have been disabled on this server",
+            )
+
         body = parse_json_object_from_request(request)
 
         assert_params_in_dict(body, [
-            'id_server', 'client_secret', 'email', 'send_attempt'
+            'client_secret', 'email', 'send_attempt'
         ])
 
-        if not check_3pid_allowed(self.hs, "email", body['email']):
+        # Extract params from body
+        client_secret = body["client_secret"]
+        email = body["email"]
+        send_attempt = body["send_attempt"]
+        next_link = body.get("next_link")  # Optional param
+
+        if not check_3pid_allowed(self.hs, "email", email):
             raise SynapseError(
                 403,
                 "Your email domain is not authorized on this server",
@@ -59,18 +95,103 @@ class EmailPasswordRequestTokenRestServlet(RestServlet):
             )
 
         existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
-            'email', body['email']
+            'email', email,
         )
 
         if existingUid is None:
             raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND)
 
-        ret = yield self.identity_handler.requestEmailToken(**body)
+        if self.config.email_password_reset_behaviour == "remote":
+            if 'id_server' not in body:
+                raise SynapseError(400, "Missing 'id_server' param in body")
+
+            # Have the identity server handle the password reset flow
+            ret = yield self.identity_handler.requestEmailToken(
+                body["id_server"], email, client_secret, send_attempt, next_link,
+            )
+        else:
+            # Send password reset emails from Synapse
+            sid = yield self.send_password_reset(
+                email, client_secret, send_attempt, next_link,
+            )
+
+            # Wrap the session id in a JSON object
+            ret = {"sid": sid}
+
         defer.returnValue((200, ret))
 
+    @defer.inlineCallbacks
+    def send_password_reset(
+        self,
+        email,
+        client_secret,
+        send_attempt,
+        next_link=None,
+    ):
+        """Send a password reset email
+
+        Args:
+            email (str): The user's email address
+            client_secret (str): The provided client secret
+            send_attempt (int): Which send attempt this is
+
+        Returns:
+            The new session_id upon success
+
+        Raises:
+            SynapseError is an error occurred when sending the email
+        """
+        # Check that this email/client_secret/send_attempt combo is new or
+        # greater than what we've seen previously
+        session = yield self.datastore.get_threepid_validation_session(
+            "email", client_secret, address=email, validated=False,
+        )
+
+        # Check to see if a session already exists and that it is not yet
+        # marked as validated
+        if session and session.get("validated_at") is None:
+            session_id = session['session_id']
+            last_send_attempt = session['last_send_attempt']
+
+            # Check that the send_attempt is higher than previous attempts
+            if send_attempt <= last_send_attempt:
+                # If not, just return a success without sending an email
+                defer.returnValue(session_id)
+        else:
+            # An non-validated session does not exist yet.
+            # Generate a session id
+            session_id = random_string(16)
+
+        # Generate a new validation token
+        token = random_string(32)
+
+        # Send the mail with the link containing the token, client_secret
+        # and session_id
+        try:
+            yield self.mailer.send_password_reset_mail(
+                email, token, client_secret, session_id,
+            )
+        except Exception:
+            logger.exception(
+                "Error sending a password reset email to %s", email,
+            )
+            raise SynapseError(
+                500, "An error was encountered when sending the password reset email"
+            )
+
+        token_expires = (self.hs.clock.time_msec() +
+                         self.config.email_validation_token_lifetime)
+
+        yield self.datastore.start_or_continue_validation_session(
+            "email", email, session_id, client_secret, send_attempt,
+            next_link, token, token_expires,
+        )
+
+        defer.returnValue(session_id)
+
 
 class MsisdnPasswordRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/password/msisdn/requestToken$")
+    PATTERNS = client_patterns("/account/password/msisdn/requestToken$")
 
     def __init__(self, hs):
         super(MsisdnPasswordRequestTokenRestServlet, self).__init__()
@@ -107,8 +228,130 @@ class MsisdnPasswordRequestTokenRestServlet(RestServlet):
         defer.returnValue((200, ret))
 
 
+class PasswordResetSubmitTokenServlet(RestServlet):
+    """Handles 3PID validation token submission"""
+    PATTERNS = client_patterns(
+        "/password_reset/(?P<medium>[^/]*)/submit_token/*$",
+        releases=(),
+        unstable=True,
+    )
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(PasswordResetSubmitTokenServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.config = hs.config
+        self.clock = hs.get_clock()
+        self.datastore = hs.get_datastore()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request, medium):
+        if medium != "email":
+            raise SynapseError(
+                400,
+                "This medium is currently not supported for password resets",
+            )
+        if self.config.email_password_reset_behaviour == "off":
+            if self.config.password_resets_were_disabled_due_to_email_config:
+                logger.warn(
+                    "User password resets have been disabled due to lack of email config"
+                )
+            raise SynapseError(
+                400, "Email-based password resets have been disabled on this server",
+            )
+
+        sid = parse_string(request, "sid")
+        client_secret = parse_string(request, "client_secret")
+        token = parse_string(request, "token")
+
+        # Attempt to validate a 3PID sesssion
+        try:
+            # Mark the session as valid
+            next_link = yield self.datastore.validate_threepid_session(
+                sid,
+                client_secret,
+                token,
+                self.clock.time_msec(),
+            )
+
+            # Perform a 302 redirect if next_link is set
+            if next_link:
+                if next_link.startswith("file:///"):
+                    logger.warn(
+                        "Not redirecting to next_link as it is a local file: address"
+                    )
+                else:
+                    request.setResponseCode(302)
+                    request.setHeader("Location", next_link)
+                    finish_request(request)
+                    defer.returnValue(None)
+
+            # Otherwise show the success template
+            html = self.config.email_password_reset_success_html_content
+            request.setResponseCode(200)
+        except ThreepidValidationError as e:
+            # Show a failure page with a reason
+            html = self.load_jinja2_template(
+                self.config.email_template_dir,
+                self.config.email_password_reset_failure_template,
+                template_vars={
+                    "failure_reason": e.msg,
+                }
+            )
+            request.setResponseCode(e.code)
+
+        request.write(html.encode('utf-8'))
+        finish_request(request)
+        defer.returnValue(None)
+
+    def load_jinja2_template(self, template_dir, template_filename, template_vars):
+        """Loads a jinja2 template with variables to insert
+
+        Args:
+            template_dir (str): The directory where templates are stored
+            template_filename (str): The name of the template in the template_dir
+            template_vars (Dict): Dictionary of keys in the template
+                alongside their values to insert
+
+        Returns:
+            str containing the contents of the rendered template
+        """
+        loader = jinja2.FileSystemLoader(template_dir)
+        env = jinja2.Environment(loader=loader)
+
+        template = env.get_template(template_filename)
+        return template.render(**template_vars)
+
+    @defer.inlineCallbacks
+    def on_POST(self, request, medium):
+        if medium != "email":
+            raise SynapseError(
+                400,
+                "This medium is currently not supported for password resets",
+            )
+
+        body = parse_json_object_from_request(request)
+        assert_params_in_dict(body, [
+            'sid', 'client_secret', 'token',
+        ])
+
+        valid, _ = yield self.datastore.validate_threepid_validation_token(
+            body['sid'],
+            body['client_secret'],
+            body['token'],
+            self.clock.time_msec(),
+        )
+        response_code = 200 if valid else 400
+
+        defer.returnValue((response_code, {"success": valid}))
+
+
 class PasswordRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/password$")
+    PATTERNS = client_patterns("/account/password$")
 
     def __init__(self, hs):
         super(PasswordRestServlet, self).__init__()
@@ -144,6 +387,7 @@ class PasswordRestServlet(RestServlet):
             result, params, _ = yield self.auth_handler.check_auth(
                 [[LoginType.EMAIL_IDENTITY], [LoginType.MSISDN]],
                 body, self.hs.get_ip_from_request(request),
+                password_servlet=True,
             )
 
             if LoginType.EMAIL_IDENTITY in result:
@@ -180,7 +424,7 @@ class PasswordRestServlet(RestServlet):
 
 
 class DeactivateAccountRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/deactivate$")
+    PATTERNS = client_patterns("/account/deactivate$")
 
     def __init__(self, hs):
         super(DeactivateAccountRestServlet, self).__init__()
@@ -228,7 +472,7 @@ class DeactivateAccountRestServlet(RestServlet):
 
 
 class EmailThreepidRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/3pid/email/requestToken$")
+    PATTERNS = client_patterns("/account/3pid/email/requestToken$")
 
     def __init__(self, hs):
         self.hs = hs
@@ -263,7 +507,7 @@ class EmailThreepidRequestTokenRestServlet(RestServlet):
 
 
 class MsisdnThreepidRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/3pid/msisdn/requestToken$")
+    PATTERNS = client_patterns("/account/3pid/msisdn/requestToken$")
 
     def __init__(self, hs):
         self.hs = hs
@@ -300,7 +544,7 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet):
 
 
 class ThreepidRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/3pid$")
+    PATTERNS = client_patterns("/account/3pid$")
 
     def __init__(self, hs):
         super(ThreepidRestServlet, self).__init__()
@@ -364,7 +608,7 @@ class ThreepidRestServlet(RestServlet):
 
 
 class ThreepidDeleteRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/3pid/delete$")
+    PATTERNS = client_patterns("/account/3pid/delete$")
 
     def __init__(self, hs):
         super(ThreepidDeleteRestServlet, self).__init__()
@@ -401,7 +645,7 @@ class ThreepidDeleteRestServlet(RestServlet):
 
 
 class WhoamiRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/account/whoami$")
+    PATTERNS = client_patterns("/account/whoami$")
 
     def __init__(self, hs):
         super(WhoamiRestServlet, self).__init__()
@@ -417,6 +661,7 @@ class WhoamiRestServlet(RestServlet):
 def register_servlets(hs, http_server):
     EmailPasswordRequestTokenRestServlet(hs).register(http_server)
     MsisdnPasswordRequestTokenRestServlet(hs).register(http_server)
+    PasswordResetSubmitTokenServlet(hs).register(http_server)
     PasswordRestServlet(hs).register(http_server)
     DeactivateAccountRestServlet(hs).register(http_server)
     EmailThreepidRequestTokenRestServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/account_data.py b/synapse/rest/client/v2_alpha/account_data.py
index f171b8d626..574a6298ce 100644
--- a/synapse/rest/client/v2_alpha/account_data.py
+++ b/synapse/rest/client/v2_alpha/account_data.py
@@ -20,7 +20,7 @@ from twisted.internet import defer
 from synapse.api.errors import AuthError, NotFoundError, SynapseError
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -30,7 +30,7 @@ class AccountDataServlet(RestServlet):
     PUT /user/{user_id}/account_data/{account_dataType} HTTP/1.1
     GET /user/{user_id}/account_data/{account_dataType} HTTP/1.1
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/user/(?P<user_id>[^/]*)/account_data/(?P<account_data_type>[^/]*)"
     )
 
@@ -79,7 +79,7 @@ class RoomAccountDataServlet(RestServlet):
     PUT /user/{user_id}/rooms/{room_id}/account_data/{account_dataType} HTTP/1.1
     GET /user/{user_id}/rooms/{room_id}/account_data/{account_dataType} HTTP/1.1
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/user/(?P<user_id>[^/]*)"
         "/rooms/(?P<room_id>[^/]*)"
         "/account_data/(?P<account_data_type>[^/]*)"
diff --git a/synapse/rest/client/v2_alpha/account_validity.py b/synapse/rest/client/v2_alpha/account_validity.py
new file mode 100644
index 0000000000..63bdc33564
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/account_validity.py
@@ -0,0 +1,91 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from twisted.internet import defer
+
+from synapse.api.errors import AuthError, SynapseError
+from synapse.http.server import finish_request
+from synapse.http.servlet import RestServlet
+
+from ._base import client_patterns
+
+logger = logging.getLogger(__name__)
+
+
+class AccountValidityRenewServlet(RestServlet):
+    PATTERNS = client_patterns("/account_validity/renew$")
+    SUCCESS_HTML = b"<html><body>Your account has been successfully renewed.</body><html>"
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(AccountValidityRenewServlet, self).__init__()
+
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request):
+        if b"token" not in request.args:
+            raise SynapseError(400, "Missing renewal token")
+        renewal_token = request.args[b"token"][0]
+
+        yield self.account_activity_handler.renew_account(renewal_token.decode('utf8'))
+
+        request.setResponseCode(200)
+        request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
+        request.setHeader(b"Content-Length", b"%d" % (
+            len(AccountValidityRenewServlet.SUCCESS_HTML),
+        ))
+        request.write(AccountValidityRenewServlet.SUCCESS_HTML)
+        finish_request(request)
+        defer.returnValue(None)
+
+
+class AccountValiditySendMailServlet(RestServlet):
+    PATTERNS = client_patterns("/account_validity/send_mail$")
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(AccountValiditySendMailServlet, self).__init__()
+
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+        self.account_validity = self.hs.config.account_validity
+
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        if not self.account_validity.renew_by_email_enabled:
+            raise AuthError(403, "Account renewal via email is disabled on this server.")
+
+        requester = yield self.auth.get_user_by_req(request, allow_expired=True)
+        user_id = requester.user.to_string()
+        yield self.account_activity_handler.send_renewal_email_to_user(user_id)
+
+        defer.returnValue((200, {}))
+
+
+def register_servlets(hs, http_server):
+    AccountValidityRenewServlet(hs).register(http_server)
+    AccountValiditySendMailServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py
index ac035c7735..8dfe5cba02 100644
--- a/synapse/rest/client/v2_alpha/auth.py
+++ b/synapse/rest/client/v2_alpha/auth.py
@@ -19,11 +19,11 @@ from twisted.internet import defer
 
 from synapse.api.constants import LoginType
 from synapse.api.errors import SynapseError
-from synapse.api.urls import CLIENT_V2_ALPHA_PREFIX
+from synapse.api.urls import CLIENT_API_PREFIX
 from synapse.http.server import finish_request
 from synapse.http.servlet import RestServlet, parse_string
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -122,7 +122,7 @@ class AuthRestServlet(RestServlet):
     cannot be handled in the normal flow (with requests to the same endpoint).
     Current use is for web fallback auth.
     """
-    PATTERNS = client_v2_patterns(r"/auth/(?P<stagetype>[\w\.]*)/fallback/web")
+    PATTERNS = client_patterns(r"/auth/(?P<stagetype>[\w\.]*)/fallback/web")
 
     def __init__(self, hs):
         super(AuthRestServlet, self).__init__()
@@ -139,8 +139,8 @@ class AuthRestServlet(RestServlet):
         if stagetype == LoginType.RECAPTCHA:
             html = RECAPTCHA_TEMPLATE % {
                 'session': session,
-                'myurl': "%s/auth/%s/fallback/web" % (
-                    CLIENT_V2_ALPHA_PREFIX, LoginType.RECAPTCHA
+                'myurl': "%s/r0/auth/%s/fallback/web" % (
+                    CLIENT_API_PREFIX, LoginType.RECAPTCHA
                 ),
                 'sitekey': self.hs.config.recaptcha_public_key,
             }
@@ -159,8 +159,8 @@ class AuthRestServlet(RestServlet):
                     self.hs.config.public_baseurl,
                     self.hs.config.user_consent_version,
                 ),
-                'myurl': "%s/auth/%s/fallback/web" % (
-                    CLIENT_V2_ALPHA_PREFIX, LoginType.TERMS
+                'myurl': "%s/r0/auth/%s/fallback/web" % (
+                    CLIENT_API_PREFIX, LoginType.TERMS
                 ),
             }
             html_bytes = html.encode("utf8")
@@ -203,8 +203,8 @@ class AuthRestServlet(RestServlet):
             else:
                 html = RECAPTCHA_TEMPLATE % {
                     'session': session,
-                    'myurl': "%s/auth/%s/fallback/web" % (
-                        CLIENT_V2_ALPHA_PREFIX, LoginType.RECAPTCHA
+                    'myurl': "%s/r0/auth/%s/fallback/web" % (
+                        CLIENT_API_PREFIX, LoginType.RECAPTCHA
                     ),
                     'sitekey': self.hs.config.recaptcha_public_key,
                 }
@@ -240,8 +240,8 @@ class AuthRestServlet(RestServlet):
                         self.hs.config.public_baseurl,
                         self.hs.config.user_consent_version,
                     ),
-                    'myurl': "%s/auth/%s/fallback/web" % (
-                        CLIENT_V2_ALPHA_PREFIX, LoginType.TERMS
+                    'myurl': "%s/r0/auth/%s/fallback/web" % (
+                        CLIENT_API_PREFIX, LoginType.TERMS
                     ),
                 }
             html_bytes = html.encode("utf8")
diff --git a/synapse/rest/client/v2_alpha/capabilities.py b/synapse/rest/client/v2_alpha/capabilities.py
index a868d06098..fc7e2f4dd5 100644
--- a/synapse/rest/client/v2_alpha/capabilities.py
+++ b/synapse/rest/client/v2_alpha/capabilities.py
@@ -16,10 +16,10 @@ import logging
 
 from twisted.internet import defer
 
-from synapse.api.room_versions import DEFAULT_ROOM_VERSION, KNOWN_ROOM_VERSIONS
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -27,7 +27,7 @@ logger = logging.getLogger(__name__)
 class CapabilitiesRestServlet(RestServlet):
     """End point to expose the capabilities of the server."""
 
-    PATTERNS = client_v2_patterns("/capabilities$")
+    PATTERNS = client_patterns("/capabilities$")
 
     def __init__(self, hs):
         """
@@ -36,6 +36,7 @@ class CapabilitiesRestServlet(RestServlet):
         """
         super(CapabilitiesRestServlet, self).__init__()
         self.hs = hs
+        self.config = hs.config
         self.auth = hs.get_auth()
         self.store = hs.get_datastore()
 
@@ -48,7 +49,7 @@ class CapabilitiesRestServlet(RestServlet):
         response = {
             "capabilities": {
                 "m.room_versions": {
-                    "default": DEFAULT_ROOM_VERSION.identifier,
+                    "default": self.config.default_room_version.identifier,
                     "available": {
                         v.identifier: v.disposition
                         for v in KNOWN_ROOM_VERSIONS.values()
diff --git a/synapse/rest/client/v2_alpha/devices.py b/synapse/rest/client/v2_alpha/devices.py
index 9b75bb1377..78665304a5 100644
--- a/synapse/rest/client/v2_alpha/devices.py
+++ b/synapse/rest/client/v2_alpha/devices.py
@@ -24,13 +24,13 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
 )
 
-from ._base import client_v2_patterns, interactive_auth_handler
+from ._base import client_patterns, interactive_auth_handler
 
 logger = logging.getLogger(__name__)
 
 
 class DevicesRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/devices$", v2_alpha=False)
+    PATTERNS = client_patterns("/devices$")
 
     def __init__(self, hs):
         """
@@ -56,7 +56,7 @@ class DeleteDevicesRestServlet(RestServlet):
     API for bulk deletion of devices. Accepts a JSON object with a devices
     key which lists the device_ids to delete. Requires user interactive auth.
     """
-    PATTERNS = client_v2_patterns("/delete_devices", v2_alpha=False)
+    PATTERNS = client_patterns("/delete_devices")
 
     def __init__(self, hs):
         super(DeleteDevicesRestServlet, self).__init__()
@@ -95,7 +95,7 @@ class DeleteDevicesRestServlet(RestServlet):
 
 
 class DeviceRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/devices/(?P<device_id>[^/]*)$", v2_alpha=False)
+    PATTERNS = client_patterns("/devices/(?P<device_id>[^/]*)$")
 
     def __init__(self, hs):
         """
diff --git a/synapse/rest/client/v2_alpha/filter.py b/synapse/rest/client/v2_alpha/filter.py
index ae86728879..65db48c3cc 100644
--- a/synapse/rest/client/v2_alpha/filter.py
+++ b/synapse/rest/client/v2_alpha/filter.py
@@ -21,13 +21,13 @@ from synapse.api.errors import AuthError, Codes, StoreError, SynapseError
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 from synapse.types import UserID
 
-from ._base import client_v2_patterns, set_timeline_upper_limit
+from ._base import client_patterns, set_timeline_upper_limit
 
 logger = logging.getLogger(__name__)
 
 
 class GetFilterRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/user/(?P<user_id>[^/]*)/filter/(?P<filter_id>[^/]*)")
+    PATTERNS = client_patterns("/user/(?P<user_id>[^/]*)/filter/(?P<filter_id>[^/]*)")
 
     def __init__(self, hs):
         super(GetFilterRestServlet, self).__init__()
@@ -63,7 +63,7 @@ class GetFilterRestServlet(RestServlet):
 
 
 class CreateFilterRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/user/(?P<user_id>[^/]*)/filter")
+    PATTERNS = client_patterns("/user/(?P<user_id>[^/]*)/filter")
 
     def __init__(self, hs):
         super(CreateFilterRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/groups.py b/synapse/rest/client/v2_alpha/groups.py
index 21e02c07c0..d082385ec7 100644
--- a/synapse/rest/client/v2_alpha/groups.py
+++ b/synapse/rest/client/v2_alpha/groups.py
@@ -21,7 +21,7 @@ from twisted.internet import defer
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 from synapse.types import GroupID
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
 class GroupServlet(RestServlet):
     """Get the group profile
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/profile$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/profile$")
 
     def __init__(self, hs):
         super(GroupServlet, self).__init__()
@@ -65,7 +65,7 @@ class GroupServlet(RestServlet):
 class GroupSummaryServlet(RestServlet):
     """Get the full group summary
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/summary$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/summary$")
 
     def __init__(self, hs):
         super(GroupSummaryServlet, self).__init__()
@@ -93,7 +93,7 @@ class GroupSummaryRoomsCatServlet(RestServlet):
         - /groups/:group/summary/rooms/:room_id
         - /groups/:group/summary/categories/:category/rooms/:room_id
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/summary"
         "(/categories/(?P<category_id>[^/]+))?"
         "/rooms/(?P<room_id>[^/]*)$"
@@ -137,7 +137,7 @@ class GroupSummaryRoomsCatServlet(RestServlet):
 class GroupCategoryServlet(RestServlet):
     """Get/add/update/delete a group category
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/categories/(?P<category_id>[^/]+)$"
     )
 
@@ -189,7 +189,7 @@ class GroupCategoryServlet(RestServlet):
 class GroupCategoriesServlet(RestServlet):
     """Get all group categories
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/categories/$"
     )
 
@@ -214,7 +214,7 @@ class GroupCategoriesServlet(RestServlet):
 class GroupRoleServlet(RestServlet):
     """Get/add/update/delete a group role
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/roles/(?P<role_id>[^/]+)$"
     )
 
@@ -266,7 +266,7 @@ class GroupRoleServlet(RestServlet):
 class GroupRolesServlet(RestServlet):
     """Get all group roles
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/roles/$"
     )
 
@@ -295,7 +295,7 @@ class GroupSummaryUsersRoleServlet(RestServlet):
         - /groups/:group/summary/users/:room_id
         - /groups/:group/summary/roles/:role/users/:user_id
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/summary"
         "(/roles/(?P<role_id>[^/]+))?"
         "/users/(?P<user_id>[^/]*)$"
@@ -339,7 +339,7 @@ class GroupSummaryUsersRoleServlet(RestServlet):
 class GroupRoomServlet(RestServlet):
     """Get all rooms in a group
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/rooms$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/rooms$")
 
     def __init__(self, hs):
         super(GroupRoomServlet, self).__init__()
@@ -360,7 +360,7 @@ class GroupRoomServlet(RestServlet):
 class GroupUsersServlet(RestServlet):
     """Get all users in a group
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/users$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/users$")
 
     def __init__(self, hs):
         super(GroupUsersServlet, self).__init__()
@@ -381,7 +381,7 @@ class GroupUsersServlet(RestServlet):
 class GroupInvitedUsersServlet(RestServlet):
     """Get users invited to a group
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/invited_users$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/invited_users$")
 
     def __init__(self, hs):
         super(GroupInvitedUsersServlet, self).__init__()
@@ -405,7 +405,7 @@ class GroupInvitedUsersServlet(RestServlet):
 class GroupSettingJoinPolicyServlet(RestServlet):
     """Set group join policy
     """
-    PATTERNS = client_v2_patterns("/groups/(?P<group_id>[^/]*)/settings/m.join_policy$")
+    PATTERNS = client_patterns("/groups/(?P<group_id>[^/]*)/settings/m.join_policy$")
 
     def __init__(self, hs):
         super(GroupSettingJoinPolicyServlet, self).__init__()
@@ -431,7 +431,7 @@ class GroupSettingJoinPolicyServlet(RestServlet):
 class GroupCreateServlet(RestServlet):
     """Create a group
     """
-    PATTERNS = client_v2_patterns("/create_group$")
+    PATTERNS = client_patterns("/create_group$")
 
     def __init__(self, hs):
         super(GroupCreateServlet, self).__init__()
@@ -462,7 +462,7 @@ class GroupCreateServlet(RestServlet):
 class GroupAdminRoomsServlet(RestServlet):
     """Add a room to the group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/admin/rooms/(?P<room_id>[^/]*)$"
     )
 
@@ -499,7 +499,7 @@ class GroupAdminRoomsServlet(RestServlet):
 class GroupAdminRoomsConfigServlet(RestServlet):
     """Update the config of a room in a group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/admin/rooms/(?P<room_id>[^/]*)"
         "/config/(?P<config_key>[^/]*)$"
     )
@@ -526,7 +526,7 @@ class GroupAdminRoomsConfigServlet(RestServlet):
 class GroupAdminUsersInviteServlet(RestServlet):
     """Invite a user to the group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/admin/users/invite/(?P<user_id>[^/]*)$"
     )
 
@@ -555,7 +555,7 @@ class GroupAdminUsersInviteServlet(RestServlet):
 class GroupAdminUsersKickServlet(RestServlet):
     """Kick a user from the group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/admin/users/remove/(?P<user_id>[^/]*)$"
     )
 
@@ -581,7 +581,7 @@ class GroupAdminUsersKickServlet(RestServlet):
 class GroupSelfLeaveServlet(RestServlet):
     """Leave a joined group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/self/leave$"
     )
 
@@ -607,7 +607,7 @@ class GroupSelfLeaveServlet(RestServlet):
 class GroupSelfJoinServlet(RestServlet):
     """Attempt to join a group, or knock
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/self/join$"
     )
 
@@ -633,7 +633,7 @@ class GroupSelfJoinServlet(RestServlet):
 class GroupSelfAcceptInviteServlet(RestServlet):
     """Accept a group invite
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/self/accept_invite$"
     )
 
@@ -659,7 +659,7 @@ class GroupSelfAcceptInviteServlet(RestServlet):
 class GroupSelfUpdatePublicityServlet(RestServlet):
     """Update whether we publicise a users membership of a group
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/groups/(?P<group_id>[^/]*)/self/update_publicity$"
     )
 
@@ -686,7 +686,7 @@ class GroupSelfUpdatePublicityServlet(RestServlet):
 class PublicisedGroupsForUserServlet(RestServlet):
     """Get the list of groups a user is advertising
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/publicised_groups/(?P<user_id>[^/]*)$"
     )
 
@@ -711,7 +711,7 @@ class PublicisedGroupsForUserServlet(RestServlet):
 class PublicisedGroupsForUsersServlet(RestServlet):
     """Get the list of groups a user is advertising
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/publicised_groups$"
     )
 
@@ -739,7 +739,7 @@ class PublicisedGroupsForUsersServlet(RestServlet):
 class GroupsForUserServlet(RestServlet):
     """Get all groups the logged in user is joined to
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/joined_groups$"
     )
 
diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py
index 8486086b51..4cbfbf5631 100644
--- a/synapse/rest/client/v2_alpha/keys.py
+++ b/synapse/rest/client/v2_alpha/keys.py
@@ -26,7 +26,7 @@ from synapse.http.servlet import (
 )
 from synapse.types import StreamToken
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -56,7 +56,7 @@ class KeyUploadServlet(RestServlet):
       },
     }
     """
-    PATTERNS = client_v2_patterns("/keys/upload(/(?P<device_id>[^/]+))?$")
+    PATTERNS = client_patterns("/keys/upload(/(?P<device_id>[^/]+))?$")
 
     def __init__(self, hs):
         """
@@ -130,7 +130,7 @@ class KeyQueryServlet(RestServlet):
     } } } } } }
     """
 
-    PATTERNS = client_v2_patterns("/keys/query$")
+    PATTERNS = client_patterns("/keys/query$")
 
     def __init__(self, hs):
         """
@@ -159,7 +159,7 @@ class KeyChangesServlet(RestServlet):
         200 OK
         { "changed": ["@foo:example.com"] }
     """
-    PATTERNS = client_v2_patterns("/keys/changes$")
+    PATTERNS = client_patterns("/keys/changes$")
 
     def __init__(self, hs):
         """
@@ -209,7 +209,7 @@ class OneTimeKeyServlet(RestServlet):
     } } } }
 
     """
-    PATTERNS = client_v2_patterns("/keys/claim$")
+    PATTERNS = client_patterns("/keys/claim$")
 
     def __init__(self, hs):
         super(OneTimeKeyServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/notifications.py b/synapse/rest/client/v2_alpha/notifications.py
index 2a6ea3df5f..53e666989b 100644
--- a/synapse/rest/client/v2_alpha/notifications.py
+++ b/synapse/rest/client/v2_alpha/notifications.py
@@ -17,25 +17,23 @@ import logging
 
 from twisted.internet import defer
 
-from synapse.events.utils import (
-    format_event_for_client_v2_without_room_id,
-    serialize_event,
-)
+from synapse.events.utils import format_event_for_client_v2_without_room_id
 from synapse.http.servlet import RestServlet, parse_integer, parse_string
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class NotificationsServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/notifications$")
+    PATTERNS = client_patterns("/notifications$")
 
     def __init__(self, hs):
         super(NotificationsServlet, self).__init__()
         self.store = hs.get_datastore()
         self.auth = hs.get_auth()
         self.clock = hs.get_clock()
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -69,11 +67,11 @@ class NotificationsServlet(RestServlet):
                 "profile_tag": pa["profile_tag"],
                 "actions": pa["actions"],
                 "ts": pa["received_ts"],
-                "event": serialize_event(
+                "event": (yield self._event_serializer.serialize_event(
                     notif_events[pa["event_id"]],
                     self.clock.time_msec(),
                     event_format=format_event_for_client_v2_without_room_id,
-                ),
+                )),
             }
 
             if pa["room_id"] not in receipts_by_room:
diff --git a/synapse/rest/client/v2_alpha/openid.py b/synapse/rest/client/v2_alpha/openid.py
index 01c90aa2a3..bb927d9f9d 100644
--- a/synapse/rest/client/v2_alpha/openid.py
+++ b/synapse/rest/client/v2_alpha/openid.py
@@ -22,7 +22,7 @@ from synapse.api.errors import AuthError
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 from synapse.util.stringutils import random_string
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -56,7 +56,7 @@ class IdTokenServlet(RestServlet):
         "expires_in": 3600,
     }
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/user/(?P<user_id>[^/]*)/openid/request_token"
     )
 
diff --git a/synapse/rest/client/v2_alpha/read_marker.py b/synapse/rest/client/v2_alpha/read_marker.py
index a6e582a5ae..f4bd0d077f 100644
--- a/synapse/rest/client/v2_alpha/read_marker.py
+++ b/synapse/rest/client/v2_alpha/read_marker.py
@@ -19,13 +19,13 @@ from twisted.internet import defer
 
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class ReadMarkerRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/rooms/(?P<room_id>[^/]*)/read_markers$")
+    PATTERNS = client_patterns("/rooms/(?P<room_id>[^/]*)/read_markers$")
 
     def __init__(self, hs):
         super(ReadMarkerRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/receipts.py b/synapse/rest/client/v2_alpha/receipts.py
index de370cac45..fa12ac3e4d 100644
--- a/synapse/rest/client/v2_alpha/receipts.py
+++ b/synapse/rest/client/v2_alpha/receipts.py
@@ -20,13 +20,13 @@ from twisted.internet import defer
 from synapse.api.errors import SynapseError
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class ReceiptRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/rooms/(?P<room_id>[^/]*)"
         "/receipt/(?P<receipt_type>[^/]*)"
         "/(?P<event_id>[^/]*)$"
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 6d235262c8..79c085408b 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -31,6 +31,7 @@ from synapse.api.errors import (
     SynapseError,
     UnrecognizedRequestError,
 )
+from synapse.config.ratelimiting import FederationRateLimitConfig
 from synapse.config.server import is_threepid_reserved
 from synapse.http.servlet import (
     RestServlet,
@@ -42,7 +43,7 @@ from synapse.util.msisdn import phone_number_to_msisdn
 from synapse.util.ratelimitutils import FederationRateLimiter
 from synapse.util.threepids import check_3pid_allowed
 
-from ._base import client_v2_patterns, interactive_auth_handler
+from ._base import client_patterns, interactive_auth_handler
 
 # We ought to be using hmac.compare_digest() but on older pythons it doesn't
 # exist. It's a _really minor_ security flaw to use plain string comparison
@@ -59,7 +60,7 @@ logger = logging.getLogger(__name__)
 
 
 class EmailRegisterRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/register/email/requestToken$")
+    PATTERNS = client_patterns("/register/email/requestToken$")
 
     def __init__(self, hs):
         """
@@ -97,7 +98,7 @@ class EmailRegisterRequestTokenRestServlet(RestServlet):
 
 
 class MsisdnRegisterRequestTokenRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/register/msisdn/requestToken$")
+    PATTERNS = client_patterns("/register/msisdn/requestToken$")
 
     def __init__(self, hs):
         """
@@ -141,7 +142,7 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet):
 
 
 class UsernameAvailabilityRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/register/available")
+    PATTERNS = client_patterns("/register/available")
 
     def __init__(self, hs):
         """
@@ -153,16 +154,18 @@ class UsernameAvailabilityRestServlet(RestServlet):
         self.registration_handler = hs.get_registration_handler()
         self.ratelimiter = FederationRateLimiter(
             hs.get_clock(),
-            # Time window of 2s
-            window_size=2000,
-            # Artificially delay requests if rate > sleep_limit/window_size
-            sleep_limit=1,
-            # Amount of artificial delay to apply
-            sleep_msec=1000,
-            # Error with 429 if more than reject_limit requests are queued
-            reject_limit=1,
-            # Allow 1 request at a time
-            concurrent_requests=1,
+            FederationRateLimitConfig(
+                # Time window of 2s
+                window_size=2000,
+                # Artificially delay requests if rate > sleep_limit/window_size
+                sleep_limit=1,
+                # Amount of artificial delay to apply
+                sleep_msec=1000,
+                # Error with 429 if more than reject_limit requests are queued
+                reject_limit=1,
+                # Allow 1 request at a time
+                concurrent_requests=1,
+            )
         )
 
     @defer.inlineCallbacks
@@ -179,7 +182,7 @@ class UsernameAvailabilityRestServlet(RestServlet):
 
 
 class RegisterRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/register$")
+    PATTERNS = client_patterns("/register$")
 
     def __init__(self, hs):
         """
@@ -345,18 +348,22 @@ class RegisterRestServlet(RestServlet):
         if self.hs.config.enable_registration_captcha:
             # only support 3PIDless registration if no 3PIDs are required
             if not require_email and not require_msisdn:
-                flows.extend([[LoginType.RECAPTCHA]])
+                # Also add a dummy flow here, otherwise if a client completes
+                # recaptcha first we'll assume they were going for this flow
+                # and complete the request, when they could have been trying to
+                # complete one of the flows with email/msisdn auth.
+                flows.extend([[LoginType.RECAPTCHA, LoginType.DUMMY]])
             # only support the email-only flow if we don't require MSISDN 3PIDs
             if not require_msisdn:
-                flows.extend([[LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA]])
+                flows.extend([[LoginType.RECAPTCHA, LoginType.EMAIL_IDENTITY]])
 
             if show_msisdn:
                 # only support the MSISDN-only flow if we don't require email 3PIDs
                 if not require_email:
-                    flows.extend([[LoginType.MSISDN, LoginType.RECAPTCHA]])
+                    flows.extend([[LoginType.RECAPTCHA, LoginType.MSISDN]])
                 # always let users provide both MSISDN & email
                 flows.extend([
-                    [LoginType.MSISDN, LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA],
+                    [LoginType.RECAPTCHA, LoginType.MSISDN, LoginType.EMAIL_IDENTITY],
                 ])
         else:
             # only support 3PIDless registration if no 3PIDs are required
@@ -379,7 +386,15 @@ class RegisterRestServlet(RestServlet):
         if self.hs.config.user_consent_at_registration:
             new_flows = []
             for flow in flows:
-                flow.append(LoginType.TERMS)
+                inserted = False
+                # m.login.terms should go near the end but before msisdn or email auth
+                for i, stage in enumerate(flow):
+                    if stage == LoginType.EMAIL_IDENTITY or stage == LoginType.MSISDN:
+                        flow.insert(i, LoginType.TERMS)
+                        inserted = True
+                        break
+                if not inserted:
+                    flow.append(LoginType.TERMS)
             flows.extend(new_flows)
 
         auth_result, params, session_id = yield self.auth_handler.check_auth(
@@ -428,6 +443,28 @@ class RegisterRestServlet(RestServlet):
             if auth_result:
                 threepid = auth_result.get(LoginType.EMAIL_IDENTITY)
 
+                # Also check that we're not trying to register a 3pid that's already
+                # been registered.
+                #
+                # This has probably happened in /register/email/requestToken as well,
+                # but if a user hits this endpoint twice then clicks on each link from
+                # the two activation emails, they would register the same 3pid twice.
+                for login_type in [LoginType.EMAIL_IDENTITY, LoginType.MSISDN]:
+                    if login_type in auth_result:
+                        medium = auth_result[login_type]['medium']
+                        address = auth_result[login_type]['address']
+
+                        existingUid = yield self.store.get_user_id_by_threepid(
+                            medium, address,
+                        )
+
+                        if existingUid is not None:
+                            raise SynapseError(
+                                400,
+                                "%s is already in use" % medium,
+                                Codes.THREEPID_IN_USE,
+                            )
+
             (registered_user_id, _) = yield self.registration_handler.register(
                 localpart=desired_username,
                 password=new_password,
diff --git a/synapse/rest/client/v2_alpha/relations.py b/synapse/rest/client/v2_alpha/relations.py
new file mode 100644
index 0000000000..f8f8742bdc
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/relations.py
@@ -0,0 +1,338 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""This class implements the proposed relation APIs from MSC 1849.
+
+Since the MSC has not been approved all APIs here are unstable and may change at
+any time to reflect changes in the MSC.
+"""
+
+import logging
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, RelationTypes
+from synapse.api.errors import SynapseError
+from synapse.http.servlet import (
+    RestServlet,
+    parse_integer,
+    parse_json_object_from_request,
+    parse_string,
+)
+from synapse.rest.client.transactions import HttpTransactionCache
+from synapse.storage.relations import AggregationPaginationToken, RelationPaginationToken
+
+from ._base import client_patterns
+
+logger = logging.getLogger(__name__)
+
+
+class RelationSendServlet(RestServlet):
+    """Helper API for sending events that have relation data.
+
+    Example API shape to send a 👍 reaction to a room:
+
+        POST /rooms/!foo/send_relation/$bar/m.annotation/m.reaction?key=%F0%9F%91%8D
+        {}
+
+        {
+            "event_id": "$foobar"
+        }
+    """
+
+    PATTERN = (
+        "/rooms/(?P<room_id>[^/]*)/send_relation"
+        "/(?P<parent_id>[^/]*)/(?P<relation_type>[^/]*)/(?P<event_type>[^/]*)"
+    )
+
+    def __init__(self, hs):
+        super(RelationSendServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.event_creation_handler = hs.get_event_creation_handler()
+        self.txns = HttpTransactionCache(hs)
+
+    def register(self, http_server):
+        http_server.register_paths(
+            "POST",
+            client_patterns(self.PATTERN + "$", releases=()),
+            self.on_PUT_or_POST,
+        )
+        http_server.register_paths(
+            "PUT",
+            client_patterns(self.PATTERN + "/(?P<txn_id>[^/]*)$", releases=()),
+            self.on_PUT,
+        )
+
+    def on_PUT(self, request, *args, **kwargs):
+        return self.txns.fetch_or_execute_request(
+            request, self.on_PUT_or_POST, request, *args, **kwargs
+        )
+
+    @defer.inlineCallbacks
+    def on_PUT_or_POST(
+        self, request, room_id, parent_id, relation_type, event_type, txn_id=None
+    ):
+        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
+
+        if event_type == EventTypes.Member:
+            # Add relations to a membership is meaningless, so we just deny it
+            # at the CS API rather than trying to handle it correctly.
+            raise SynapseError(400, "Cannot send member events with relations")
+
+        content = parse_json_object_from_request(request)
+
+        aggregation_key = parse_string(request, "key", encoding="utf-8")
+
+        content["m.relates_to"] = {
+            "event_id": parent_id,
+            "key": aggregation_key,
+            "rel_type": relation_type,
+        }
+
+        event_dict = {
+            "type": event_type,
+            "content": content,
+            "room_id": room_id,
+            "sender": requester.user.to_string(),
+        }
+
+        event = yield self.event_creation_handler.create_and_send_nonmember_event(
+            requester, event_dict=event_dict, txn_id=txn_id
+        )
+
+        defer.returnValue((200, {"event_id": event.event_id}))
+
+
+class RelationPaginationServlet(RestServlet):
+    """API to paginate relations on an event by topological ordering, optionally
+    filtered by relation type and event type.
+    """
+
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/relations/(?P<parent_id>[^/]*)"
+        "(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
+        releases=(),
+    )
+
+    def __init__(self, hs):
+        super(RelationPaginationServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.clock = hs.get_clock()
+        self._event_serializer = hs.get_event_client_serializer()
+        self.event_handler = hs.get_event_handler()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request, room_id, parent_id, relation_type=None, event_type=None):
+        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
+
+        yield self.auth.check_in_room_or_world_readable(
+            room_id, requester.user.to_string()
+        )
+
+        # This checks that a) the event exists and b) the user is allowed to
+        # view it.
+        yield self.event_handler.get_event(requester.user, room_id, parent_id)
+
+        limit = parse_integer(request, "limit", default=5)
+        from_token = parse_string(request, "from")
+        to_token = parse_string(request, "to")
+
+        if from_token:
+            from_token = RelationPaginationToken.from_string(from_token)
+
+        if to_token:
+            to_token = RelationPaginationToken.from_string(to_token)
+
+        result = yield self.store.get_relations_for_event(
+            event_id=parent_id,
+            relation_type=relation_type,
+            event_type=event_type,
+            limit=limit,
+            from_token=from_token,
+            to_token=to_token,
+        )
+
+        events = yield self.store.get_events_as_list(
+            [c["event_id"] for c in result.chunk]
+        )
+
+        now = self.clock.time_msec()
+        events = yield self._event_serializer.serialize_events(events, now)
+
+        return_value = result.to_dict()
+        return_value["chunk"] = events
+
+        defer.returnValue((200, return_value))
+
+
+class RelationAggregationPaginationServlet(RestServlet):
+    """API to paginate aggregation groups of relations, e.g. paginate the
+    types and counts of the reactions on the events.
+
+    Example request and response:
+
+        GET /rooms/{room_id}/aggregations/{parent_id}
+
+        {
+            chunk: [
+                {
+                    "type": "m.reaction",
+                    "key": "👍",
+                    "count": 3
+                }
+            ]
+        }
+    """
+
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
+        "(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
+        releases=(),
+    )
+
+    def __init__(self, hs):
+        super(RelationAggregationPaginationServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.event_handler = hs.get_event_handler()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request, room_id, parent_id, relation_type=None, event_type=None):
+        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
+
+        yield self.auth.check_in_room_or_world_readable(
+            room_id, requester.user.to_string()
+        )
+
+        # This checks that a) the event exists and b) the user is allowed to
+        # view it.
+        yield self.event_handler.get_event(requester.user, room_id, parent_id)
+
+        if relation_type not in (RelationTypes.ANNOTATION, None):
+            raise SynapseError(400, "Relation type must be 'annotation'")
+
+        limit = parse_integer(request, "limit", default=5)
+        from_token = parse_string(request, "from")
+        to_token = parse_string(request, "to")
+
+        if from_token:
+            from_token = AggregationPaginationToken.from_string(from_token)
+
+        if to_token:
+            to_token = AggregationPaginationToken.from_string(to_token)
+
+        res = yield self.store.get_aggregation_groups_for_event(
+            event_id=parent_id,
+            event_type=event_type,
+            limit=limit,
+            from_token=from_token,
+            to_token=to_token,
+        )
+
+        defer.returnValue((200, res.to_dict()))
+
+
+class RelationAggregationGroupPaginationServlet(RestServlet):
+    """API to paginate within an aggregation group of relations, e.g. paginate
+    all the 👍 reactions on an event.
+
+    Example request and response:
+
+        GET /rooms/{room_id}/aggregations/{parent_id}/m.annotation/m.reaction/👍
+
+        {
+            chunk: [
+                {
+                    "type": "m.reaction",
+                    "content": {
+                        "m.relates_to": {
+                            "rel_type": "m.annotation",
+                            "key": "👍"
+                        }
+                    }
+                },
+                ...
+            ]
+        }
+    """
+
+    PATTERNS = client_patterns(
+        "/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
+        "/(?P<relation_type>[^/]*)/(?P<event_type>[^/]*)/(?P<key>[^/]*)$",
+        releases=(),
+    )
+
+    def __init__(self, hs):
+        super(RelationAggregationGroupPaginationServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.clock = hs.get_clock()
+        self._event_serializer = hs.get_event_client_serializer()
+        self.event_handler = hs.get_event_handler()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request, room_id, parent_id, relation_type, event_type, key):
+        requester = yield self.auth.get_user_by_req(request, allow_guest=True)
+
+        yield self.auth.check_in_room_or_world_readable(
+            room_id, requester.user.to_string()
+        )
+
+        # This checks that a) the event exists and b) the user is allowed to
+        # view it.
+        yield self.event_handler.get_event(requester.user, room_id, parent_id)
+
+        if relation_type != RelationTypes.ANNOTATION:
+            raise SynapseError(400, "Relation type must be 'annotation'")
+
+        limit = parse_integer(request, "limit", default=5)
+        from_token = parse_string(request, "from")
+        to_token = parse_string(request, "to")
+
+        if from_token:
+            from_token = RelationPaginationToken.from_string(from_token)
+
+        if to_token:
+            to_token = RelationPaginationToken.from_string(to_token)
+
+        result = yield self.store.get_relations_for_event(
+            event_id=parent_id,
+            relation_type=relation_type,
+            event_type=event_type,
+            aggregation_key=key,
+            limit=limit,
+            from_token=from_token,
+            to_token=to_token,
+        )
+
+        events = yield self.store.get_events_as_list(
+            [c["event_id"] for c in result.chunk]
+        )
+
+        now = self.clock.time_msec()
+        events = yield self._event_serializer.serialize_events(events, now)
+
+        return_value = result.to_dict()
+        return_value["chunk"] = events
+
+        defer.returnValue((200, return_value))
+
+
+def register_servlets(hs, http_server):
+    RelationSendServlet(hs).register(http_server)
+    RelationPaginationServlet(hs).register(http_server)
+    RelationAggregationPaginationServlet(hs).register(http_server)
+    RelationAggregationGroupPaginationServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/report_event.py b/synapse/rest/client/v2_alpha/report_event.py
index 95d2a71ec2..10198662a9 100644
--- a/synapse/rest/client/v2_alpha/report_event.py
+++ b/synapse/rest/client/v2_alpha/report_event.py
@@ -27,13 +27,13 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
 )
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class ReportEventRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/rooms/(?P<room_id>[^/]*)/report/(?P<event_id>[^/]*)$"
     )
 
diff --git a/synapse/rest/client/v2_alpha/room_keys.py b/synapse/rest/client/v2_alpha/room_keys.py
index 220a0de30b..87779645f9 100644
--- a/synapse/rest/client/v2_alpha/room_keys.py
+++ b/synapse/rest/client/v2_alpha/room_keys.py
@@ -24,13 +24,13 @@ from synapse.http.servlet import (
     parse_string,
 )
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class RoomKeysServlet(RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/room_keys/keys(/(?P<room_id>[^/]+))?(/(?P<session_id>[^/]+))?$"
     )
 
@@ -256,7 +256,7 @@ class RoomKeysServlet(RestServlet):
 
 
 class RoomKeysNewVersionServlet(RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/room_keys/version$"
     )
 
@@ -314,7 +314,7 @@ class RoomKeysNewVersionServlet(RestServlet):
 
 
 class RoomKeysVersionServlet(RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/room_keys/version(/(?P<version>[^/]+))?$"
     )
 
diff --git a/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
index 3db7ff8d1b..c621a90fba 100644
--- a/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
+++ b/synapse/rest/client/v2_alpha/room_upgrade_rest_servlet.py
@@ -25,7 +25,7 @@ from synapse.http.servlet import (
     parse_json_object_from_request,
 )
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -47,10 +47,9 @@ class RoomUpgradeRestServlet(RestServlet):
     Args:
         hs (synapse.server.HomeServer):
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         # /rooms/$roomid/upgrade
         "/rooms/(?P<room_id>[^/]*)/upgrade$",
-        v2_alpha=False,
     )
 
     def __init__(self, hs):
diff --git a/synapse/rest/client/v2_alpha/sendtodevice.py b/synapse/rest/client/v2_alpha/sendtodevice.py
index a9e9a47a0b..120a713361 100644
--- a/synapse/rest/client/v2_alpha/sendtodevice.py
+++ b/synapse/rest/client/v2_alpha/sendtodevice.py
@@ -21,15 +21,14 @@ from synapse.http import servlet
 from synapse.http.servlet import parse_json_object_from_request
 from synapse.rest.client.transactions import HttpTransactionCache
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class SendToDeviceRestServlet(servlet.RestServlet):
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/sendToDevice/(?P<message_type>[^/]*)/(?P<txn_id>[^/]*)$",
-        v2_alpha=False
     )
 
     def __init__(self, hs):
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index 39d157a44b..148fc6c985 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -26,14 +26,13 @@ from synapse.api.filtering import DEFAULT_FILTER_COLLECTION, FilterCollection
 from synapse.events.utils import (
     format_event_for_client_v2_without_room_id,
     format_event_raw,
-    serialize_event,
 )
 from synapse.handlers.presence import format_user_presence_state
 from synapse.handlers.sync import SyncConfig
 from synapse.http.servlet import RestServlet, parse_boolean, parse_integer, parse_string
 from synapse.types import StreamToken
 
-from ._base import client_v2_patterns, set_timeline_upper_limit
+from ._base import client_patterns, set_timeline_upper_limit
 
 logger = logging.getLogger(__name__)
 
@@ -74,7 +73,7 @@ class SyncRestServlet(RestServlet):
         }
     """
 
-    PATTERNS = client_v2_patterns("/sync$")
+    PATTERNS = client_patterns("/sync$")
     ALLOWED_PRESENCE = set(["online", "offline", "unavailable"])
 
     def __init__(self, hs):
@@ -86,6 +85,7 @@ class SyncRestServlet(RestServlet):
         self.filtering = hs.get_filtering()
         self.presence_handler = hs.get_presence_handler()
         self._server_notices_sender = hs.get_server_notices_sender()
+        self._event_serializer = hs.get_event_client_serializer()
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -168,14 +168,14 @@ class SyncRestServlet(RestServlet):
             )
 
         time_now = self.clock.time_msec()
-        response_content = self.encode_response(
+        response_content = yield self.encode_response(
             time_now, sync_result, requester.access_token_id, filter
         )
 
         defer.returnValue((200, response_content))
 
-    @staticmethod
-    def encode_response(time_now, sync_result, access_token_id, filter):
+    @defer.inlineCallbacks
+    def encode_response(self, time_now, sync_result, access_token_id, filter):
         if filter.event_format == 'client':
             event_formatter = format_event_for_client_v2_without_room_id
         elif filter.event_format == 'federation':
@@ -183,24 +183,24 @@ class SyncRestServlet(RestServlet):
         else:
             raise Exception("Unknown event format %s" % (filter.event_format, ))
 
-        joined = SyncRestServlet.encode_joined(
+        joined = yield self.encode_joined(
             sync_result.joined, time_now, access_token_id,
             filter.event_fields,
             event_formatter,
         )
 
-        invited = SyncRestServlet.encode_invited(
+        invited = yield self.encode_invited(
             sync_result.invited, time_now, access_token_id,
             event_formatter,
         )
 
-        archived = SyncRestServlet.encode_archived(
+        archived = yield self.encode_archived(
             sync_result.archived, time_now, access_token_id,
             filter.event_fields,
             event_formatter,
         )
 
-        return {
+        defer.returnValue({
             "account_data": {"events": sync_result.account_data},
             "to_device": {"events": sync_result.to_device},
             "device_lists": {
@@ -222,7 +222,7 @@ class SyncRestServlet(RestServlet):
             },
             "device_one_time_keys_count": sync_result.device_one_time_keys_count,
             "next_batch": sync_result.next_batch.to_string(),
-        }
+        })
 
     @staticmethod
     def encode_presence(events, time_now):
@@ -239,8 +239,8 @@ class SyncRestServlet(RestServlet):
             ]
         }
 
-    @staticmethod
-    def encode_joined(rooms, time_now, token_id, event_fields, event_formatter):
+    @defer.inlineCallbacks
+    def encode_joined(self, rooms, time_now, token_id, event_fields, event_formatter):
         """
         Encode the joined rooms in a sync result
 
@@ -261,15 +261,15 @@ class SyncRestServlet(RestServlet):
         """
         joined = {}
         for room in rooms:
-            joined[room.room_id] = SyncRestServlet.encode_room(
+            joined[room.room_id] = yield self.encode_room(
                 room, time_now, token_id, joined=True, only_fields=event_fields,
                 event_formatter=event_formatter,
             )
 
-        return joined
+        defer.returnValue(joined)
 
-    @staticmethod
-    def encode_invited(rooms, time_now, token_id, event_formatter):
+    @defer.inlineCallbacks
+    def encode_invited(self, rooms, time_now, token_id, event_formatter):
         """
         Encode the invited rooms in a sync result
 
@@ -289,7 +289,7 @@ class SyncRestServlet(RestServlet):
         """
         invited = {}
         for room in rooms:
-            invite = serialize_event(
+            invite = yield self._event_serializer.serialize_event(
                 room.invite, time_now, token_id=token_id,
                 event_format=event_formatter,
                 is_invite=True,
@@ -302,10 +302,10 @@ class SyncRestServlet(RestServlet):
                 "invite_state": {"events": invited_state}
             }
 
-        return invited
+        defer.returnValue(invited)
 
-    @staticmethod
-    def encode_archived(rooms, time_now, token_id, event_fields, event_formatter):
+    @defer.inlineCallbacks
+    def encode_archived(self, rooms, time_now, token_id, event_fields, event_formatter):
         """
         Encode the archived rooms in a sync result
 
@@ -326,17 +326,17 @@ class SyncRestServlet(RestServlet):
         """
         joined = {}
         for room in rooms:
-            joined[room.room_id] = SyncRestServlet.encode_room(
+            joined[room.room_id] = yield self.encode_room(
                 room, time_now, token_id, joined=False,
                 only_fields=event_fields,
                 event_formatter=event_formatter,
             )
 
-        return joined
+        defer.returnValue(joined)
 
-    @staticmethod
+    @defer.inlineCallbacks
     def encode_room(
-            room, time_now, token_id, joined,
+            self, room, time_now, token_id, joined,
             only_fields, event_formatter,
     ):
         """
@@ -355,9 +355,13 @@ class SyncRestServlet(RestServlet):
         Returns:
             dict[str, object]: the room, encoded in our response format
         """
-        def serialize(event):
-            return serialize_event(
-                event, time_now, token_id=token_id,
+        def serialize(events):
+            return self._event_serializer.serialize_events(
+                events, time_now=time_now,
+                # We don't bundle "live" events, as otherwise clients
+                # will end up double counting annotations.
+                bundle_aggregations=False,
+                token_id=token_id,
                 event_format=event_formatter,
                 only_event_fields=only_fields,
             )
@@ -376,8 +380,8 @@ class SyncRestServlet(RestServlet):
                     event.event_id, room.room_id, event.room_id,
                 )
 
-        serialized_state = [serialize(e) for e in state_events]
-        serialized_timeline = [serialize(e) for e in timeline_events]
+        serialized_state = yield serialize(state_events)
+        serialized_timeline = yield serialize(timeline_events)
 
         account_data = room.account_data
 
@@ -397,7 +401,7 @@ class SyncRestServlet(RestServlet):
             result["unread_notifications"] = room.unread_notifications
             result["summary"] = room.summary
 
-        return result
+        defer.returnValue(result)
 
 
 def register_servlets(hs, http_server):
diff --git a/synapse/rest/client/v2_alpha/tags.py b/synapse/rest/client/v2_alpha/tags.py
index 4fea614e95..ebff7cff45 100644
--- a/synapse/rest/client/v2_alpha/tags.py
+++ b/synapse/rest/client/v2_alpha/tags.py
@@ -20,7 +20,7 @@ from twisted.internet import defer
 from synapse.api.errors import AuthError
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
@@ -29,7 +29,7 @@ class TagListServlet(RestServlet):
     """
     GET /user/{user_id}/rooms/{room_id}/tags HTTP/1.1
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags"
     )
 
@@ -54,7 +54,7 @@ class TagServlet(RestServlet):
     PUT /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
     DELETE /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
     """
-    PATTERNS = client_v2_patterns(
+    PATTERNS = client_patterns(
         "/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags/(?P<tag>[^/]*)"
     )
 
diff --git a/synapse/rest/client/v2_alpha/thirdparty.py b/synapse/rest/client/v2_alpha/thirdparty.py
index b9b5d07677..e7a987466a 100644
--- a/synapse/rest/client/v2_alpha/thirdparty.py
+++ b/synapse/rest/client/v2_alpha/thirdparty.py
@@ -21,13 +21,13 @@ from twisted.internet import defer
 from synapse.api.constants import ThirdPartyEntityKind
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class ThirdPartyProtocolsServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/thirdparty/protocols")
+    PATTERNS = client_patterns("/thirdparty/protocols")
 
     def __init__(self, hs):
         super(ThirdPartyProtocolsServlet, self).__init__()
@@ -44,7 +44,7 @@ class ThirdPartyProtocolsServlet(RestServlet):
 
 
 class ThirdPartyProtocolServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/thirdparty/protocol/(?P<protocol>[^/]+)$")
+    PATTERNS = client_patterns("/thirdparty/protocol/(?P<protocol>[^/]+)$")
 
     def __init__(self, hs):
         super(ThirdPartyProtocolServlet, self).__init__()
@@ -66,7 +66,7 @@ class ThirdPartyProtocolServlet(RestServlet):
 
 
 class ThirdPartyUserServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/thirdparty/user(/(?P<protocol>[^/]+))?$")
+    PATTERNS = client_patterns("/thirdparty/user(/(?P<protocol>[^/]+))?$")
 
     def __init__(self, hs):
         super(ThirdPartyUserServlet, self).__init__()
@@ -89,7 +89,7 @@ class ThirdPartyUserServlet(RestServlet):
 
 
 class ThirdPartyLocationServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/thirdparty/location(/(?P<protocol>[^/]+))?$")
+    PATTERNS = client_patterns("/thirdparty/location(/(?P<protocol>[^/]+))?$")
 
     def __init__(self, hs):
         super(ThirdPartyLocationServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/tokenrefresh.py b/synapse/rest/client/v2_alpha/tokenrefresh.py
index 6e76b9e9c2..6c366142e1 100644
--- a/synapse/rest/client/v2_alpha/tokenrefresh.py
+++ b/synapse/rest/client/v2_alpha/tokenrefresh.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 from synapse.api.errors import AuthError
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 
 class TokenRefreshRestServlet(RestServlet):
@@ -26,7 +26,7 @@ class TokenRefreshRestServlet(RestServlet):
     Exchanges refresh tokens for a pair of an access token and a new refresh
     token.
     """
-    PATTERNS = client_v2_patterns("/tokenrefresh")
+    PATTERNS = client_patterns("/tokenrefresh")
 
     def __init__(self, hs):
         super(TokenRefreshRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/user_directory.py b/synapse/rest/client/v2_alpha/user_directory.py
index 36b02de37f..69e4efc47a 100644
--- a/synapse/rest/client/v2_alpha/user_directory.py
+++ b/synapse/rest/client/v2_alpha/user_directory.py
@@ -20,13 +20,13 @@ from twisted.internet import defer
 from synapse.api.errors import SynapseError
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 
-from ._base import client_v2_patterns
+from ._base import client_patterns
 
 logger = logging.getLogger(__name__)
 
 
 class UserDirectorySearchRestServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/user_directory/search$")
+    PATTERNS = client_patterns("/user_directory/search$")
 
     def __init__(self, hs):
         """
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
index 27e7cbf3cc..babbf6a23c 100644
--- a/synapse/rest/client/versions.py
+++ b/synapse/rest/client/versions.py
@@ -39,6 +39,7 @@ class VersionsRestServlet(RestServlet):
                 "r0.2.0",
                 "r0.3.0",
                 "r0.4.0",
+                "r0.5.0",
             ],
             # as per MSC1497:
             "unstable_features": {
diff --git a/synapse/rest/key/v2/remote_key_resource.py b/synapse/rest/key/v2/remote_key_resource.py
index eb8782aa6e..8a730bbc35 100644
--- a/synapse/rest/key/v2/remote_key_resource.py
+++ b/synapse/rest/key/v2/remote_key_resource.py
@@ -20,7 +20,7 @@ from twisted.web.resource import Resource
 from twisted.web.server import NOT_DONE_YET
 
 from synapse.api.errors import Codes, SynapseError
-from synapse.crypto.keyring import KeyLookupError
+from synapse.crypto.keyring import ServerKeyFetcher
 from synapse.http.server import respond_with_json_bytes, wrap_json_request_handler
 from synapse.http.servlet import parse_integer, parse_json_object_from_request
 
@@ -89,7 +89,7 @@ class RemoteKey(Resource):
     isLeaf = True
 
     def __init__(self, hs):
-        self.keyring = hs.get_keyring()
+        self.fetcher = ServerKeyFetcher(hs)
         self.store = hs.get_datastore()
         self.clock = hs.get_clock()
         self.federation_domain_whitelist = hs.config.federation_domain_whitelist
@@ -215,15 +215,7 @@ class RemoteKey(Resource):
                     json_results.add(bytes(result["key_json"]))
 
         if cache_misses and query_remote_on_cache_miss:
-            for server_name, key_ids in cache_misses.items():
-                try:
-                    yield self.keyring.get_server_verify_key_v2_direct(
-                        server_name, key_ids
-                    )
-                except KeyLookupError as e:
-                    logger.info("Failed to fetch key: %s", e)
-                except Exception:
-                    logger.exception("Failed to get key for %r", server_name)
+            yield self.fetcher.get_keys(cache_misses)
             yield self.query_keys(
                 request, query, query_remote_on_cache_miss=False
             )
diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 953d89bd82..2dcc8f74d6 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2019 New Vector Ltd.
+# Copyright 2019 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -191,6 +191,10 @@ def respond_with_responder(request, responder, media_type, file_size, upload_nam
         # in that case.
         logger.warning("Failed to write to consumer: %s %s", type(e), e)
 
+        # Unregister the producer, if it has one, so Twisted doesn't complain
+        if request.producer:
+            request.unregisterProducer()
+
     finish_request(request)
 
 
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index bdffa97805..a4929dd5db 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -386,8 +386,10 @@ class MediaRepository(object):
                 raise SynapseError(502, "Failed to fetch remote media")
 
             except SynapseError:
-                logger.exception("Failed to fetch remote media %s/%s",
-                                 server_name, media_id)
+                logger.warn(
+                    "Failed to fetch remote media %s/%s",
+                    server_name, media_id,
+                )
                 raise
             except NotRetryingDestination:
                 logger.warn("Not retrying destination %r", server_name)
@@ -444,6 +446,9 @@ class MediaRepository(object):
             )
             return
 
+        if thumbnailer.transpose_method is not None:
+            m_width, m_height = thumbnailer.transpose()
+
         if t_method == "crop":
             t_byte_source = thumbnailer.crop(t_width, t_height, t_type)
         elif t_method == "scale":
@@ -578,6 +583,12 @@ class MediaRepository(object):
             )
             return
 
+        if thumbnailer.transpose_method is not None:
+            m_width, m_height = yield logcontext.defer_to_thread(
+                self.hs.get_reactor(),
+                thumbnailer.transpose
+            )
+
         # We deduplicate the thumbnail sizes by ignoring the cropped versions if
         # they have the same dimensions of a scaled one.
         thumbnails = {}
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index ba3ab1d37d..acf87709f2 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -31,6 +31,7 @@ from six.moves import urllib_parse as urlparse
 from canonicaljson import json
 
 from twisted.internet import defer
+from twisted.internet.error import DNSLookupError
 from twisted.web.resource import Resource
 from twisted.web.server import NOT_DONE_YET
 
@@ -328,9 +329,18 @@ class PreviewUrlResource(Resource):
                 # handler will return a SynapseError to the client instead of
                 # blank data or a 500.
                 raise
+            except DNSLookupError:
+                # DNS lookup returned no results
+                # Note: This will also be the case if one of the resolved IP
+                # addresses is blacklisted
+                raise SynapseError(
+                    502, "DNS resolution failure during URL preview generation",
+                    Codes.UNKNOWN
+                )
             except Exception as e:
                 # FIXME: pass through 404s and other error messages nicely
                 logger.warn("Error downloading %s: %r", url, e)
+
                 raise SynapseError(
                     500, "Failed to download content: %s" % (
                         traceback.format_exception_only(sys.exc_info()[0], e),
diff --git a/synapse/rest/media/v1/storage_provider.py b/synapse/rest/media/v1/storage_provider.py
index 5aa03031f6..d90cbfb56a 100644
--- a/synapse/rest/media/v1/storage_provider.py
+++ b/synapse/rest/media/v1/storage_provider.py
@@ -108,6 +108,7 @@ class FileStorageProviderBackend(StorageProvider):
     """
 
     def __init__(self, hs, config):
+        self.hs = hs
         self.cache_directory = hs.config.media_store_path
         self.base_directory = config
 
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index 5305e9175f..35a750923b 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -56,8 +56,8 @@ class ThumbnailResource(Resource):
     def _async_render_GET(self, request):
         set_cors_headers(request)
         server_name, media_id, _ = parse_media_id(request)
-        width = parse_integer(request, "width")
-        height = parse_integer(request, "height")
+        width = parse_integer(request, "width", required=True)
+        height = parse_integer(request, "height", required=True)
         method = parse_string(request, "method", "scale")
         m_type = parse_string(request, "type", "image/png")
 
diff --git a/synapse/rest/media/v1/thumbnailer.py b/synapse/rest/media/v1/thumbnailer.py
index a4b26c2587..3efd0d80fc 100644
--- a/synapse/rest/media/v1/thumbnailer.py
+++ b/synapse/rest/media/v1/thumbnailer.py
@@ -20,6 +20,17 @@ import PIL.Image as Image
 
 logger = logging.getLogger(__name__)
 
+EXIF_ORIENTATION_TAG = 0x0112
+EXIF_TRANSPOSE_MAPPINGS = {
+    2: Image.FLIP_LEFT_RIGHT,
+    3: Image.ROTATE_180,
+    4: Image.FLIP_TOP_BOTTOM,
+    5: Image.TRANSPOSE,
+    6: Image.ROTATE_270,
+    7: Image.TRANSVERSE,
+    8: Image.ROTATE_90
+}
+
 
 class Thumbnailer(object):
 
@@ -31,6 +42,30 @@ class Thumbnailer(object):
     def __init__(self, input_path):
         self.image = Image.open(input_path)
         self.width, self.height = self.image.size
+        self.transpose_method = None
+        try:
+            # We don't use ImageOps.exif_transpose since it crashes with big EXIF
+            image_exif = self.image._getexif()
+            if image_exif is not None:
+                image_orientation = image_exif.get(EXIF_ORIENTATION_TAG)
+                self.transpose_method = EXIF_TRANSPOSE_MAPPINGS.get(image_orientation)
+        except Exception as e:
+            # A lot of parsing errors can happen when parsing EXIF
+            logger.info("Error parsing image EXIF information: %s", e)
+
+    def transpose(self):
+        """Transpose the image using its EXIF Orientation tag
+
+        Returns:
+            Tuple[int, int]: (width, height) containing the new image size in pixels.
+        """
+        if self.transpose_method is not None:
+            self.image = self.image.transpose(self.transpose_method)
+            self.width, self.height = self.image.size
+            self.transpose_method = None
+            # We don't need EXIF any more
+            self.image.info["exif"] = None
+        return self.image.size
 
     def aspect(self, max_width, max_height):
         """Calculate the largest size that preserves aspect ratio which
diff --git a/synapse/rest/well_known.py b/synapse/rest/well_known.py
index c0a4ae93e5..a7fa4f39af 100644
--- a/synapse/rest/well_known.py
+++ b/synapse/rest/well_known.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -68,6 +68,6 @@ class WellKnownResource(Resource):
             request.setHeader(b"Content-Type", b"text/plain")
             return b'.well-known not available'
 
-        logger.error("returning: %s", r)
+        logger.debug("returning: %s", r)
         request.setHeader(b"Content-Type", b"application/json")
         return json.dumps(r).encode("utf-8")
diff --git a/synapse/server.py b/synapse/server.py
index dc8f1ccb8c..a54e023cc9 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -35,6 +37,8 @@ from synapse.crypto import context_factory
 from synapse.crypto.keyring import Keyring
 from synapse.events.builder import EventBuilderFactory
 from synapse.events.spamcheck import SpamChecker
+from synapse.events.third_party_rules import ThirdPartyEventRules
+from synapse.events.utils import EventClientSerializer
 from synapse.federation.federation_client import FederationClient
 from synapse.federation.federation_server import (
     FederationHandlerRegistry,
@@ -47,6 +51,7 @@ from synapse.federation.transport.client import TransportLayerClient
 from synapse.groups.attestations import GroupAttestationSigning, GroupAttestionRenewer
 from synapse.groups.groups_server import GroupsServerHandler
 from synapse.handlers import Handlers
+from synapse.handlers.account_validity import AccountValidityHandler
 from synapse.handlers.acme import AcmeHandler
 from synapse.handlers.appservice import ApplicationServicesHandler
 from synapse.handlers.auth import AuthHandler, MacaroonGenerator
@@ -70,6 +75,7 @@ from synapse.handlers.room_list import RoomListHandler
 from synapse.handlers.room_member import RoomMemberMasterHandler
 from synapse.handlers.room_member_worker import RoomMemberWorkerHandler
 from synapse.handlers.set_password import SetPasswordHandler
+from synapse.handlers.stats import StatsHandler
 from synapse.handlers.sync import SyncHandler
 from synapse.handlers.typing import TypingHandler
 from synapse.handlers.user_directory import UserDirectoryHandler
@@ -137,6 +143,7 @@ class HomeServer(object):
         'acme_handler',
         'auth_handler',
         'device_handler',
+        'stats_handler',
         'e2e_keys_handler',
         'e2e_room_keys_handler',
         'event_handler',
@@ -174,6 +181,7 @@ class HomeServer(object):
         'groups_attestation_renewer',
         'secrets',
         'spam_checker',
+        'third_party_event_rules',
         'room_member_handler',
         'federation_registry',
         'server_notices_manager',
@@ -183,10 +191,13 @@ class HomeServer(object):
         'room_context_handler',
         'sendmail',
         'registration_handler',
+        'account_validity_handler',
+        'event_client_serializer',
     ]
 
     REQUIRED_ON_MASTER_STARTUP = [
         "user_directory_handler",
+        "stats_handler"
     ]
 
     # This is overridden in derived application classes
@@ -470,9 +481,15 @@ class HomeServer(object):
     def build_secrets(self):
         return Secrets()
 
+    def build_stats_handler(self):
+        return StatsHandler(self)
+
     def build_spam_checker(self):
         return SpamChecker(self)
 
+    def build_third_party_event_rules(self):
+        return ThirdPartyEventRules(self)
+
     def build_room_member_handler(self):
         if self.config.worker_app:
             return RoomMemberWorkerHandler(self)
@@ -506,6 +523,12 @@ class HomeServer(object):
     def build_registration_handler(self):
         return RegistrationHandler(self)
 
+    def build_account_validity_handler(self):
+        return AccountValidityHandler(self)
+
+    def build_event_client_serializer(self):
+        return EventClientSerializer(self)
+
     def remove_pusher(self, app_id, push_key, user_id):
         return self.get_pusherpool().remove_pusher(app_id, push_key, user_id)
 
diff --git a/synapse/server.pyi b/synapse/server.pyi
index 3ba3a967c2..9583e82d52 100644
--- a/synapse/server.pyi
+++ b/synapse/server.pyi
@@ -18,7 +18,6 @@ import synapse.server_notices.server_notices_sender
 import synapse.state
 import synapse.storage
 
-
 class HomeServer(object):
     @property
     def config(self) -> synapse.config.homeserver.HomeServerConfig:
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index c432041b4e..0ca6f6121f 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -36,6 +36,7 @@ from .engines import PostgresEngine
 from .event_federation import EventFederationStore
 from .event_push_actions import EventPushActionsStore
 from .events import EventsStore
+from .events_bg_updates import EventsBackgroundUpdatesStore
 from .filtering import FilteringStore
 from .group_server import GroupServerStore
 from .keys import KeyStore
@@ -49,11 +50,13 @@ from .pusher import PusherStore
 from .receipts import ReceiptsStore
 from .registration import RegistrationStore
 from .rejections import RejectionsStore
+from .relations import RelationsStore
 from .room import RoomStore
 from .roommember import RoomMemberStore
 from .search import SearchStore
 from .signatures import SignatureStore
 from .state import StateStore
+from .stats import StatsStore
 from .stream import StreamStore
 from .tags import TagsStore
 from .transactions import TransactionStore
@@ -64,6 +67,7 @@ logger = logging.getLogger(__name__)
 
 
 class DataStore(
+    EventsBackgroundUpdatesStore,
     RoomMemberStore,
     RoomStore,
     RegistrationStore,
@@ -99,6 +103,8 @@ class DataStore(
     GroupServerStore,
     UserErasureStore,
     MonthlyActiveUsersStore,
+    StatsStore,
+    RelationsStore,
 ):
     def __init__(self, db_conn, hs):
         self.hs = hs
@@ -273,23 +279,37 @@ class DataStore(
         """
         Counts the number of users who used this homeserver in the last 24 hours.
         """
+        yesterday = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24)
+        return self.runInteraction("count_daily_users", self._count_users, yesterday,)
 
-        def _count_users(txn):
-            yesterday = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24)
+    def count_monthly_users(self):
+        """
+        Counts the number of users who used this homeserver in the last 30 days.
+        Note this method is intended for phonehome metrics only and is different
+        from the mau figure in synapse.storage.monthly_active_users which,
+        amongst other things, includes a 3 day grace period before a user counts.
+        """
+        thirty_days_ago = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30)
+        return self.runInteraction(
+            "count_monthly_users",
+            self._count_users,
+            thirty_days_ago,
+        )
 
-            sql = """
-                SELECT COALESCE(count(*), 0) FROM (
-                    SELECT user_id FROM user_ips
-                    WHERE last_seen > ?
-                    GROUP BY user_id
-                ) u
-            """
-
-            txn.execute(sql, (yesterday,))
-            count, = txn.fetchone()
-            return count
-
-        return self.runInteraction("count_users", _count_users)
+    def _count_users(self, txn, time_from):
+        """
+        Returns number of users seen in the past time_from period
+        """
+        sql = """
+            SELECT COALESCE(count(*), 0) FROM (
+                SELECT user_id FROM user_ips
+                WHERE last_seen > ?
+                GROUP BY user_id
+            ) u
+        """
+        txn.execute(sql, (time_from,))
+        count, = txn.fetchone()
+        return count
 
     def count_r30_users(self):
         """
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 983ce026e1..941c07fce5 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,6 +16,7 @@
 # limitations under the License.
 import itertools
 import logging
+import random
 import sys
 import threading
 import time
@@ -227,6 +230,8 @@ class SQLBaseStore(object):
         # A set of tables that are not safe to use native upserts in.
         self._unsafe_to_upsert_tables = set(UNIQUE_INDEX_BACKGROUND_UPDATES.keys())
 
+        self._account_validity = self.hs.config.account_validity
+
         # We add the user_directory_search table to the blacklist on SQLite
         # because the existing search table does not have an index, making it
         # unsafe to use native upserts.
@@ -243,6 +248,16 @@ class SQLBaseStore(object):
                 self._check_safe_to_upsert,
             )
 
+        self.rand = random.SystemRandom()
+
+        if self._account_validity.enabled:
+            self._clock.call_later(
+                0.0,
+                run_as_background_process,
+                "account_validity_set_expiration_dates",
+                self._set_expiration_date_when_missing,
+            )
+
     @defer.inlineCallbacks
     def _check_safe_to_upsert(self):
         """
@@ -275,6 +290,67 @@ class SQLBaseStore(object):
                 self._check_safe_to_upsert,
             )
 
+    @defer.inlineCallbacks
+    def _set_expiration_date_when_missing(self):
+        """
+        Retrieves the list of registered users that don't have an expiration date, and
+        adds an expiration date for each of them.
+        """
+
+        def select_users_with_no_expiration_date_txn(txn):
+            """Retrieves the list of registered users with no expiration date from the
+            database, filtering out deactivated users.
+            """
+            sql = (
+                "SELECT users.name FROM users"
+                " LEFT JOIN account_validity ON (users.name = account_validity.user_id)"
+                " WHERE account_validity.user_id is NULL AND users.deactivated = 0;"
+            )
+            txn.execute(sql, [])
+
+            res = self.cursor_to_dict(txn)
+            if res:
+                for user in res:
+                    self.set_expiration_date_for_user_txn(
+                        txn,
+                        user["name"],
+                        use_delta=True,
+                    )
+
+        yield self.runInteraction(
+            "get_users_with_no_expiration_date",
+            select_users_with_no_expiration_date_txn,
+        )
+
+    def set_expiration_date_for_user_txn(self, txn, user_id, use_delta=False):
+        """Sets an expiration date to the account with the given user ID.
+
+        Args:
+             user_id (str): User ID to set an expiration date for.
+             use_delta (bool): If set to False, the expiration date for the user will be
+                now + validity period. If set to True, this expiration date will be a
+                random value in the [now + period - d ; now + period] range, d being a
+                delta equal to 10% of the validity period.
+        """
+        now_ms = self._clock.time_msec()
+        expiration_ts = now_ms + self._account_validity.period
+
+        if use_delta:
+            expiration_ts = self.rand.randrange(
+                expiration_ts - self._account_validity.startup_job_max_delta,
+                expiration_ts,
+            )
+
+        self._simple_insert_txn(
+            txn,
+            "account_validity",
+            values={
+                "user_id": user_id,
+                "expiration_ts_ms": expiration_ts,
+                "email_sent": False,
+            },
+        )
+
     def start_profiling(self):
         self._previous_loop_ts = self._clock.time_msec()
 
@@ -512,6 +588,10 @@ class SQLBaseStore(object):
         Args:
             table : string giving the table name
             values : dict of new column names and values for them
+            or_ignore : bool stating whether an exception should be raised
+                when a conflicting row already exists. If True, False will be
+                returned by the function instead
+            desc : string giving a description of the transaction
 
         Returns:
             bool: Whether the row was inserted or not. Only useful when
@@ -1152,8 +1232,8 @@ class SQLBaseStore(object):
         )
 
         txn.execute(select_sql, list(keyvalues.values()))
-
         row = txn.fetchone()
+
         if not row:
             if allow_none:
                 return None
@@ -1203,7 +1283,8 @@ class SQLBaseStore(object):
             " AND ".join("%s = ?" % (k,) for k in keyvalues),
         )
 
-        return txn.execute(sql, list(keyvalues.values()))
+        txn.execute(sql, list(keyvalues.values()))
+        return txn.rowcount
 
     def _simple_delete_many(self, table, column, iterable, keyvalues, desc):
         return self.runInteraction(
@@ -1222,9 +1303,12 @@ class SQLBaseStore(object):
             column : column name to test for inclusion against `iterable`
             iterable : list
             keyvalues : dict of column names and values to select the rows with
+
+        Returns:
+            int: Number rows deleted
         """
         if not iterable:
-            return
+            return 0
 
         sql = "DELETE FROM %s" % table
 
@@ -1239,7 +1323,9 @@ class SQLBaseStore(object):
 
         if clauses:
             sql = "%s WHERE %s" % (sql, " AND ".join(clauses))
-        return txn.execute(sql, values)
+        txn.execute(sql, values)
+
+        return txn.rowcount
 
     def _get_cache_dict(
         self, db_conn, table, entity_column, stream_column, max_value, limit=100000
diff --git a/synapse/storage/appservice.py b/synapse/storage/appservice.py
index 6092f600ba..eb329ebd8b 100644
--- a/synapse/storage/appservice.py
+++ b/synapse/storage/appservice.py
@@ -302,7 +302,7 @@ class ApplicationServiceTransactionWorkerStore(
 
         event_ids = json.loads(entry["event_ids"])
 
-        events = yield self._get_events(event_ids)
+        events = yield self.get_events_as_list(event_ids)
 
         defer.returnValue(
             AppServiceTransaction(service=service, id=entry["txn_id"], events=events)
@@ -358,7 +358,7 @@ class ApplicationServiceTransactionWorkerStore(
             "get_new_events_for_appservice", get_new_events_for_appservice_txn
         )
 
-        events = yield self._get_events(event_ids)
+        events = yield self.get_events_as_list(event_ids)
 
         defer.returnValue((upper_bound, events))
 
diff --git a/synapse/storage/deviceinbox.py b/synapse/storage/deviceinbox.py
index fed4ea3610..4ea0deea4f 100644
--- a/synapse/storage/deviceinbox.py
+++ b/synapse/storage/deviceinbox.py
@@ -118,7 +118,7 @@ class DeviceInboxWorkerStore(SQLBaseStore):
         defer.returnValue(count)
 
     def get_new_device_msgs_for_remote(
-        self, destination, last_stream_id, current_stream_id, limit=100
+        self, destination, last_stream_id, current_stream_id, limit
     ):
         """
         Args:
@@ -138,6 +138,10 @@ class DeviceInboxWorkerStore(SQLBaseStore):
         if not has_changed or last_stream_id == current_stream_id:
             return defer.succeed(([], current_stream_id))
 
+        if limit <= 0:
+            # This can happen if we run out of room for EDUs in the transaction.
+            return defer.succeed(([], last_stream_id))
+
         def get_new_messages_for_remote_destination_txn(txn):
             sql = (
                 "SELECT stream_id, messages_json FROM device_federation_outbox"
diff --git a/synapse/storage/devices.py b/synapse/storage/devices.py
index fd869b934c..d102e07372 100644
--- a/synapse/storage/devices.py
+++ b/synapse/storage/devices.py
@@ -14,7 +14,7 @@
 # limitations under the License.
 import logging
 
-from six import iteritems, itervalues
+from six import iteritems
 
 from canonicaljson import json
 
@@ -72,11 +72,14 @@ class DeviceWorkerStore(SQLBaseStore):
 
         defer.returnValue({d["device_id"]: d for d in devices})
 
-    def get_devices_by_remote(self, destination, from_stream_id):
+    @defer.inlineCallbacks
+    def get_devices_by_remote(self, destination, from_stream_id, limit):
         """Get stream of updates to send to remote servers
 
         Returns:
-            (int, list[dict]): current stream id and list of updates
+            Deferred[tuple[int, list[dict]]]:
+                current stream id (ie, the stream id of the last update included in the
+                response), and the list of updates
         """
         now_stream_id = self._device_list_id_gen.get_current_token()
 
@@ -84,55 +87,131 @@ class DeviceWorkerStore(SQLBaseStore):
             destination, int(from_stream_id)
         )
         if not has_changed:
-            return (now_stream_id, [])
+            defer.returnValue((now_stream_id, []))
 
-        return self.runInteraction(
+        # We retrieve n+1 devices from the list of outbound pokes where n is
+        # our outbound device update limit. We then check if the very last
+        # device has the same stream_id as the second-to-last device. If so,
+        # then we ignore all devices with that stream_id and only send the
+        # devices with a lower stream_id.
+        #
+        # If when culling the list we end up with no devices afterwards, we
+        # consider the device update to be too large, and simply skip the
+        # stream_id; the rationale being that such a large device list update
+        # is likely an error.
+        updates = yield self.runInteraction(
             "get_devices_by_remote",
             self._get_devices_by_remote_txn,
             destination,
             from_stream_id,
             now_stream_id,
+            limit + 1,
         )
 
-    def _get_devices_by_remote_txn(
-        self, txn, destination, from_stream_id, now_stream_id
-    ):
-        sql = """
-            SELECT user_id, device_id, max(stream_id) FROM device_lists_outbound_pokes
-            WHERE destination = ? AND ? < stream_id AND stream_id <= ? AND sent = ?
-            GROUP BY user_id, device_id
-            LIMIT 20
-        """
-        txn.execute(sql, (destination, from_stream_id, now_stream_id, False))
+        # Return an empty list if there are no updates
+        if not updates:
+            defer.returnValue((now_stream_id, []))
 
+        # if we have exceeded the limit, we need to exclude any results with the
+        # same stream_id as the last row.
+        if len(updates) > limit:
+            stream_id_cutoff = updates[-1][2]
+            now_stream_id = stream_id_cutoff - 1
+        else:
+            stream_id_cutoff = None
+
+        # Perform the equivalent of a GROUP BY
+        #
+        # Iterate through the updates list and copy non-duplicate
+        # (user_id, device_id) entries into a map, with the value being
+        # the max stream_id across each set of duplicate entries
+        #
         # maps (user_id, device_id) -> stream_id
-        query_map = {(r[0], r[1]): r[2] for r in txn}
+        # as long as their stream_id does not match that of the last row
+        query_map = {}
+        for update in updates:
+            if stream_id_cutoff is not None and update[2] >= stream_id_cutoff:
+                # Stop processing updates
+                break
+
+            key = (update[0], update[1])
+            query_map[key] = max(query_map.get(key, 0), update[2])
+
+        # If we didn't find any updates with a stream_id lower than the cutoff, it
+        # means that there are more than limit updates all of which have the same
+        # steam_id.
+
+        # That should only happen if a client is spamming the server with new
+        # devices, in which case E2E isn't going to work well anyway. We'll just
+        # skip that stream_id and return an empty list, and continue with the next
+        # stream_id next time.
         if not query_map:
-            return (now_stream_id, [])
+            defer.returnValue((stream_id_cutoff, []))
 
-        if len(query_map) >= 20:
-            now_stream_id = max(stream_id for stream_id in itervalues(query_map))
+        results = yield self._get_device_update_edus_by_remote(
+            destination,
+            from_stream_id,
+            query_map,
+        )
 
-        devices = self._get_e2e_device_keys_txn(
-            txn,
+        defer.returnValue((now_stream_id, results))
+
+    def _get_devices_by_remote_txn(
+        self, txn, destination, from_stream_id, now_stream_id, limit
+    ):
+        """Return device update information for a given remote destination
+
+        Args:
+            txn (LoggingTransaction): The transaction to execute
+            destination (str): The host the device updates are intended for
+            from_stream_id (int): The minimum stream_id to filter updates by, exclusive
+            now_stream_id (int): The maximum stream_id to filter updates by, inclusive
+            limit (int): Maximum number of device updates to return
+
+        Returns:
+            List: List of device updates
+        """
+        sql = """
+            SELECT user_id, device_id, stream_id FROM device_lists_outbound_pokes
+            WHERE destination = ? AND ? < stream_id AND stream_id <= ? AND sent = ?
+            ORDER BY stream_id
+            LIMIT ?
+        """
+        txn.execute(sql, (destination, from_stream_id, now_stream_id, False, limit))
+
+        return list(txn)
+
+    @defer.inlineCallbacks
+    def _get_device_update_edus_by_remote(
+        self, destination, from_stream_id, query_map,
+    ):
+        """Returns a list of device update EDUs as well as E2EE keys
+
+        Args:
+            destination (str): The host the device updates are intended for
+            from_stream_id (int): The minimum stream_id to filter updates by, exclusive
+            query_map (Dict[(str, str): int]): Dictionary mapping
+                user_id/device_id to update stream_id
+
+        Returns:
+            List[Dict]: List of objects representing an device update EDU
+
+        """
+        devices = yield self.runInteraction(
+            "_get_e2e_device_keys_txn",
+            self._get_e2e_device_keys_txn,
             query_map.keys(),
             include_all_devices=True,
             include_deleted_devices=True,
         )
 
-        prev_sent_id_sql = """
-            SELECT coalesce(max(stream_id), 0) as stream_id
-            FROM device_lists_outbound_last_success
-            WHERE destination = ? AND user_id = ? AND stream_id <= ?
-        """
-
         results = []
         for user_id, user_devices in iteritems(devices):
             # The prev_id for the first row is always the last row before
             # `from_stream_id`
-            txn.execute(prev_sent_id_sql, (destination, user_id, from_stream_id))
-            rows = txn.fetchall()
-            prev_id = rows[0][0]
+            prev_id = yield self._get_last_device_update_for_remote_user(
+                destination, user_id, from_stream_id,
+            )
             for device_id, device in iteritems(user_devices):
                 stream_id = query_map[(user_id, device_id)]
                 result = {
@@ -156,7 +235,22 @@ class DeviceWorkerStore(SQLBaseStore):
 
                 results.append(result)
 
-        return (now_stream_id, results)
+        defer.returnValue(results)
+
+    def _get_last_device_update_for_remote_user(
+        self, destination, user_id, from_stream_id,
+    ):
+        def f(txn):
+            prev_sent_id_sql = """
+                SELECT coalesce(max(stream_id), 0) as stream_id
+                FROM device_lists_outbound_last_success
+                WHERE destination = ? AND user_id = ? AND stream_id <= ?
+            """
+            txn.execute(prev_sent_id_sql, (destination, user_id, from_stream_id))
+            rows = txn.fetchall()
+            return rows[0][0]
+
+        return self.runInteraction("get_last_device_update_for_remote_user", f)
 
     def mark_as_sent_devices_by_remote(self, destination, stream_id):
         """Mark that updates have successfully been sent to the destination.
diff --git a/synapse/storage/engines/postgres.py b/synapse/storage/engines/postgres.py
index 1b97ee74e3..289b6bc281 100644
--- a/synapse/storage/engines/postgres.py
+++ b/synapse/storage/engines/postgres.py
@@ -45,6 +45,10 @@ class PostgresEngine(object):
         # together. For example, version 8.1.5 will be returned as 80105
         self._version = db_conn.server_version
 
+        # Are we on a supported PostgreSQL version?
+        if self._version < 90500:
+            raise RuntimeError("Synapse requires PostgreSQL 9.5+ or above.")
+
         db_conn.set_isolation_level(
             self.module.extensions.ISOLATION_LEVEL_REPEATABLE_READ
         )
@@ -64,9 +68,9 @@ class PostgresEngine(object):
     @property
     def can_native_upsert(self):
         """
-        Can we use native UPSERTs? This requires PostgreSQL 9.5+.
+        Can we use native UPSERTs?
         """
-        return self._version >= 90500
+        return True
 
     def is_deadlock(self, error):
         if isinstance(error, self.module.DatabaseError):
diff --git a/synapse/storage/event_federation.py b/synapse/storage/event_federation.py
index 956f876572..09e39c2c28 100644
--- a/synapse/storage/event_federation.py
+++ b/synapse/storage/event_federation.py
@@ -45,7 +45,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
         """
         return self.get_auth_chain_ids(
             event_ids, include_given=include_given
-        ).addCallback(self._get_events)
+        ).addCallback(self.get_events_as_list)
 
     def get_auth_chain_ids(self, event_ids, include_given=False):
         """Get auth events for given event_ids. The events *must* be state events.
@@ -316,7 +316,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
                 event_list,
                 limit,
             )
-            .addCallback(self._get_events)
+            .addCallback(self.get_events_as_list)
             .addCallback(lambda l: sorted(l, key=lambda e: -e.depth))
         )
 
@@ -382,7 +382,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
             latest_events,
             limit,
         )
-        events = yield self._get_events(ids)
+        events = yield self.get_events_as_list(ids)
         defer.returnValue(events)
 
     def _get_missing_events(self, txn, room_id, earliest_events, latest_events, limit):
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index dfda39bbe0..f631fb1733 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd
+# Copyright 2018-2019 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,7 +17,7 @@
 
 import itertools
 import logging
-from collections import OrderedDict, deque, namedtuple
+from collections import Counter as c_counter, OrderedDict, deque, namedtuple
 from functools import wraps
 
 from six import iteritems, text_type
@@ -32,6 +33,7 @@ from synapse.api.constants import EventTypes
 from synapse.api.errors import SynapseError
 from synapse.events import EventBase  # noqa: F401
 from synapse.events.snapshot import EventContext  # noqa: F401
+from synapse.metrics import BucketCollector
 from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.state import StateResolutionStore
 from synapse.storage.background_updates import BackgroundUpdateStore
@@ -219,43 +221,39 @@ class EventsStore(
     EventsWorkerStore,
     BackgroundUpdateStore,
 ):
-    EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
-    EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url"
-
     def __init__(self, db_conn, hs):
         super(EventsStore, self).__init__(db_conn, hs)
-        self.register_background_update_handler(
-            self.EVENT_ORIGIN_SERVER_TS_NAME, self._background_reindex_origin_server_ts
-        )
-        self.register_background_update_handler(
-            self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME,
-            self._background_reindex_fields_sender,
-        )
-
-        self.register_background_index_update(
-            "event_contains_url_index",
-            index_name="event_contains_url_index",
-            table="events",
-            columns=["room_id", "topological_ordering", "stream_ordering"],
-            where_clause="contains_url = true AND outlier = false",
-        )
-
-        # an event_id index on event_search is useful for the purge_history
-        # api. Plus it means we get to enforce some integrity with a UNIQUE
-        # clause
-        self.register_background_index_update(
-            "event_search_event_id_idx",
-            index_name="event_search_event_id_idx",
-            table="event_search",
-            columns=["event_id"],
-            unique=True,
-            psql_only=True,
-        )
 
         self._event_persist_queue = _EventPeristenceQueue()
-
         self._state_resolution_handler = hs.get_state_resolution_handler()
 
+        # Collect metrics on the number of forward extremities that exist.
+        # Counter of number of extremities to count
+        self._current_forward_extremities_amount = c_counter()
+
+        BucketCollector(
+            "synapse_forward_extremities",
+            lambda: self._current_forward_extremities_amount,
+            buckets=[1, 2, 3, 5, 7, 10, 15, 20, 50, 100, 200, 500, "+Inf"]
+        )
+
+        # Read the extrems every 60 minutes
+        hs.get_clock().looping_call(self._read_forward_extremities, 60 * 60 * 1000)
+
+    @defer.inlineCallbacks
+    def _read_forward_extremities(self):
+        def fetch(txn):
+            txn.execute(
+                """
+                select count(*) c from event_forward_extremities
+                group by room_id
+                """
+            )
+            return txn.fetchall()
+
+        res = yield self.runInteraction("read_forward_extremities", fetch)
+        self._current_forward_extremities_amount = c_counter(list(x[0] for x in res))
+
     @defer.inlineCallbacks
     def persist_events(self, events_and_contexts, backfilled=False):
         """
@@ -554,10 +552,18 @@ class EventsStore(
             e_id for event in new_events for e_id in event.prev_event_ids()
         )
 
-        # Finally, remove any events which are prev_events of any existing events.
+        # Remove any events which are prev_events of any existing events.
         existing_prevs = yield self._get_events_which_are_prevs(result)
         result.difference_update(existing_prevs)
 
+        # Finally handle the case where the new events have soft-failed prev
+        # events. If they do we need to remove them and their prev events,
+        # otherwise we end up with dangling extremities.
+        existing_prevs = yield self._get_prevs_before_rejected(
+            e_id for event in new_events for e_id in event.prev_event_ids()
+        )
+        result.difference_update(existing_prevs)
+
         defer.returnValue(result)
 
     @defer.inlineCallbacks
@@ -573,12 +579,13 @@ class EventsStore(
         """
         results = []
 
-        def _get_events(txn, batch):
+        def _get_events_which_are_prevs_txn(txn, batch):
             sql = """
-            SELECT prev_event_id
+            SELECT prev_event_id, internal_metadata
             FROM event_edges
                 INNER JOIN events USING (event_id)
                 LEFT JOIN rejections USING (event_id)
+                LEFT JOIN event_json USING (event_id)
             WHERE
                 prev_event_id IN (%s)
                 AND NOT events.outlier
@@ -588,13 +595,77 @@ class EventsStore(
             )
 
             txn.execute(sql, batch)
-            results.extend(r[0] for r in txn)
+            results.extend(r[0] for r in txn if not json.loads(r[1]).get("soft_failed"))
 
         for chunk in batch_iter(event_ids, 100):
-            yield self.runInteraction("_get_events_which_are_prevs", _get_events, chunk)
+            yield self.runInteraction(
+                "_get_events_which_are_prevs", _get_events_which_are_prevs_txn, chunk
+            )
 
         defer.returnValue(results)
 
+    @defer.inlineCallbacks
+    def _get_prevs_before_rejected(self, event_ids):
+        """Get soft-failed ancestors to remove from the extremities.
+
+        Given a set of events, find all those that have been soft-failed or
+        rejected. Returns those soft failed/rejected events and their prev
+        events (whether soft-failed/rejected or not), and recurses up the
+        prev-event graph until it finds no more soft-failed/rejected events.
+
+        This is used to find extremities that are ancestors of new events, but
+        are separated by soft failed events.
+
+        Args:
+            event_ids (Iterable[str]): Events to find prev events for. Note
+                that these must have already been persisted.
+
+        Returns:
+            Deferred[set[str]]
+        """
+
+        # The set of event_ids to return. This includes all soft-failed events
+        # and their prev events.
+        existing_prevs = set()
+
+        def _get_prevs_before_rejected_txn(txn, batch):
+            to_recursively_check = batch
+
+            while to_recursively_check:
+                sql = """
+                SELECT
+                    event_id, prev_event_id, internal_metadata,
+                    rejections.event_id IS NOT NULL
+                FROM event_edges
+                    INNER JOIN events USING (event_id)
+                    LEFT JOIN rejections USING (event_id)
+                    LEFT JOIN event_json USING (event_id)
+                WHERE
+                    event_id IN (%s)
+                    AND NOT events.outlier
+                """ % (
+                    ",".join("?" for _ in to_recursively_check),
+                )
+
+                txn.execute(sql, to_recursively_check)
+                to_recursively_check = []
+
+                for event_id, prev_event_id, metadata, rejected in txn:
+                    if prev_event_id in existing_prevs:
+                        continue
+
+                    soft_failed = json.loads(metadata).get("soft_failed")
+                    if soft_failed or rejected:
+                        to_recursively_check.append(prev_event_id)
+                        existing_prevs.add(prev_event_id)
+
+        for chunk in batch_iter(event_ids, 100):
+            yield self.runInteraction(
+                "_get_prevs_before_rejected", _get_prevs_before_rejected_txn, chunk
+            )
+
+        defer.returnValue(existing_prevs)
+
     @defer.inlineCallbacks
     def _get_new_state_after_events(
         self, room_id, events_context, old_latest_event_ids, new_latest_event_ids
@@ -1179,14 +1250,10 @@ class EventsStore(
             "events",
             "event_auth",
             "event_json",
-            "event_content_hashes",
-            "event_destinations",
-            "event_edge_hashes",
             "event_edges",
             "event_forward_extremities",
             "event_reference_hashes",
             "event_search",
-            "event_signatures",
             "event_to_state_groups",
             "guest_access",
             "history_visibility",
@@ -1329,6 +1396,9 @@ class EventsStore(
                     txn, event.room_id, event.redacts
                 )
 
+                # Remove from relations table.
+                self._handle_redaction(txn, event.redacts)
+
         # Update the event_forward_extremities, event_backward_extremities and
         # event_edges tables.
         self._handle_mult_prev_events(
@@ -1355,6 +1425,8 @@ class EventsStore(
                 # Insert into the event_search table.
                 self._store_guest_access_txn(txn, event)
 
+            self._handle_event_relations(txn, event)
+
         # Insert into the room_memberships table.
         self._store_room_members_txn(
             txn,
@@ -1497,153 +1569,6 @@ class EventsStore(
         ret = yield self.runInteraction("count_daily_active_rooms", _count)
         defer.returnValue(ret)
 
-    @defer.inlineCallbacks
-    def _background_reindex_fields_sender(self, progress, batch_size):
-        target_min_stream_id = progress["target_min_stream_id_inclusive"]
-        max_stream_id = progress["max_stream_id_exclusive"]
-        rows_inserted = progress.get("rows_inserted", 0)
-
-        INSERT_CLUMP_SIZE = 1000
-
-        def reindex_txn(txn):
-            sql = (
-                "SELECT stream_ordering, event_id, json FROM events"
-                " INNER JOIN event_json USING (event_id)"
-                " WHERE ? <= stream_ordering AND stream_ordering < ?"
-                " ORDER BY stream_ordering DESC"
-                " LIMIT ?"
-            )
-
-            txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
-
-            rows = txn.fetchall()
-            if not rows:
-                return 0
-
-            min_stream_id = rows[-1][0]
-
-            update_rows = []
-            for row in rows:
-                try:
-                    event_id = row[1]
-                    event_json = json.loads(row[2])
-                    sender = event_json["sender"]
-                    content = event_json["content"]
-
-                    contains_url = "url" in content
-                    if contains_url:
-                        contains_url &= isinstance(content["url"], text_type)
-                except (KeyError, AttributeError):
-                    # If the event is missing a necessary field then
-                    # skip over it.
-                    continue
-
-                update_rows.append((sender, contains_url, event_id))
-
-            sql = "UPDATE events SET sender = ?, contains_url = ? WHERE event_id = ?"
-
-            for index in range(0, len(update_rows), INSERT_CLUMP_SIZE):
-                clump = update_rows[index : index + INSERT_CLUMP_SIZE]
-                txn.executemany(sql, clump)
-
-            progress = {
-                "target_min_stream_id_inclusive": target_min_stream_id,
-                "max_stream_id_exclusive": min_stream_id,
-                "rows_inserted": rows_inserted + len(rows),
-            }
-
-            self._background_update_progress_txn(
-                txn, self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, progress
-            )
-
-            return len(rows)
-
-        result = yield self.runInteraction(
-            self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, reindex_txn
-        )
-
-        if not result:
-            yield self._end_background_update(self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME)
-
-        defer.returnValue(result)
-
-    @defer.inlineCallbacks
-    def _background_reindex_origin_server_ts(self, progress, batch_size):
-        target_min_stream_id = progress["target_min_stream_id_inclusive"]
-        max_stream_id = progress["max_stream_id_exclusive"]
-        rows_inserted = progress.get("rows_inserted", 0)
-
-        INSERT_CLUMP_SIZE = 1000
-
-        def reindex_search_txn(txn):
-            sql = (
-                "SELECT stream_ordering, event_id FROM events"
-                " WHERE ? <= stream_ordering AND stream_ordering < ?"
-                " ORDER BY stream_ordering DESC"
-                " LIMIT ?"
-            )
-
-            txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
-
-            rows = txn.fetchall()
-            if not rows:
-                return 0
-
-            min_stream_id = rows[-1][0]
-            event_ids = [row[1] for row in rows]
-
-            rows_to_update = []
-
-            chunks = [event_ids[i : i + 100] for i in range(0, len(event_ids), 100)]
-            for chunk in chunks:
-                ev_rows = self._simple_select_many_txn(
-                    txn,
-                    table="event_json",
-                    column="event_id",
-                    iterable=chunk,
-                    retcols=["event_id", "json"],
-                    keyvalues={},
-                )
-
-                for row in ev_rows:
-                    event_id = row["event_id"]
-                    event_json = json.loads(row["json"])
-                    try:
-                        origin_server_ts = event_json["origin_server_ts"]
-                    except (KeyError, AttributeError):
-                        # If the event is missing a necessary field then
-                        # skip over it.
-                        continue
-
-                    rows_to_update.append((origin_server_ts, event_id))
-
-            sql = "UPDATE events SET origin_server_ts = ? WHERE event_id = ?"
-
-            for index in range(0, len(rows_to_update), INSERT_CLUMP_SIZE):
-                clump = rows_to_update[index : index + INSERT_CLUMP_SIZE]
-                txn.executemany(sql, clump)
-
-            progress = {
-                "target_min_stream_id_inclusive": target_min_stream_id,
-                "max_stream_id_exclusive": min_stream_id,
-                "rows_inserted": rows_inserted + len(rows_to_update),
-            }
-
-            self._background_update_progress_txn(
-                txn, self.EVENT_ORIGIN_SERVER_TS_NAME, progress
-            )
-
-            return len(rows_to_update)
-
-        result = yield self.runInteraction(
-            self.EVENT_ORIGIN_SERVER_TS_NAME, reindex_search_txn
-        )
-
-        if not result:
-            yield self._end_background_update(self.EVENT_ORIGIN_SERVER_TS_NAME)
-
-        defer.returnValue(result)
-
     def get_current_backfill_token(self):
         """The current minimum token that backfilled events have reached"""
         return -self._backfill_id_gen.get_current_token()
@@ -1659,10 +1584,11 @@ class EventsStore(
         def get_all_new_forward_event_rows(txn):
             sql = (
                 "SELECT e.stream_ordering, e.event_id, e.room_id, e.type,"
-                " state_key, redacts"
+                " state_key, redacts, relates_to_id"
                 " FROM events AS e"
                 " LEFT JOIN redactions USING (event_id)"
                 " LEFT JOIN state_events USING (event_id)"
+                " LEFT JOIN event_relations USING (event_id)"
                 " WHERE ? < stream_ordering AND stream_ordering <= ?"
                 " ORDER BY stream_ordering ASC"
                 " LIMIT ?"
@@ -1677,11 +1603,12 @@ class EventsStore(
 
             sql = (
                 "SELECT event_stream_ordering, e.event_id, e.room_id, e.type,"
-                " state_key, redacts"
+                " state_key, redacts, relates_to_id"
                 " FROM events AS e"
                 " INNER JOIN ex_outlier_stream USING (event_id)"
                 " LEFT JOIN redactions USING (event_id)"
                 " LEFT JOIN state_events USING (event_id)"
+                " LEFT JOIN event_relations USING (event_id)"
                 " WHERE ? < event_stream_ordering"
                 " AND event_stream_ordering <= ?"
                 " ORDER BY event_stream_ordering DESC"
@@ -1702,10 +1629,11 @@ class EventsStore(
         def get_all_new_backfill_event_rows(txn):
             sql = (
                 "SELECT -e.stream_ordering, e.event_id, e.room_id, e.type,"
-                " state_key, redacts"
+                " state_key, redacts, relates_to_id"
                 " FROM events AS e"
                 " LEFT JOIN redactions USING (event_id)"
                 " LEFT JOIN state_events USING (event_id)"
+                " LEFT JOIN event_relations USING (event_id)"
                 " WHERE ? > stream_ordering AND stream_ordering >= ?"
                 " ORDER BY stream_ordering ASC"
                 " LIMIT ?"
@@ -1720,11 +1648,12 @@ class EventsStore(
 
             sql = (
                 "SELECT -event_stream_ordering, e.event_id, e.room_id, e.type,"
-                " state_key, redacts"
+                " state_key, redacts, relates_to_id"
                 " FROM events AS e"
                 " INNER JOIN ex_outlier_stream USING (event_id)"
                 " LEFT JOIN redactions USING (event_id)"
                 " LEFT JOIN state_events USING (event_id)"
+                " LEFT JOIN event_relations USING (event_id)"
                 " WHERE ? > event_stream_ordering"
                 " AND event_stream_ordering >= ?"
                 " ORDER BY event_stream_ordering DESC"
@@ -1857,16 +1786,12 @@ class EventsStore(
         # Tables that should be pruned:
         #     event_auth
         #     event_backward_extremities
-        #     event_content_hashes
-        #     event_destinations
-        #     event_edge_hashes
         #     event_edges
         #     event_forward_extremities
         #     event_json
         #     event_push_actions
         #     event_reference_hashes
         #     event_search
-        #     event_signatures
         #     event_to_state_groups
         #     events
         #     rejections
@@ -2065,14 +1990,10 @@ class EventsStore(
             "events",
             "event_json",
             "event_auth",
-            "event_content_hashes",
-            "event_destinations",
-            "event_edge_hashes",
             "event_edges",
             "event_forward_extremities",
             "event_reference_hashes",
             "event_search",
-            "event_signatures",
             "rejections",
         ):
             logger.info("[purge] removing events from %s", table)
diff --git a/synapse/storage/events_bg_updates.py b/synapse/storage/events_bg_updates.py
new file mode 100644
index 0000000000..75c1935bf3
--- /dev/null
+++ b/synapse/storage/events_bg_updates.py
@@ -0,0 +1,401 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from six import text_type
+
+from canonicaljson import json
+
+from twisted.internet import defer
+
+from synapse.storage.background_updates import BackgroundUpdateStore
+
+logger = logging.getLogger(__name__)
+
+
+class EventsBackgroundUpdatesStore(BackgroundUpdateStore):
+
+    EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
+    EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url"
+    DELETE_SOFT_FAILED_EXTREMITIES = "delete_soft_failed_extremities"
+
+    def __init__(self, db_conn, hs):
+        super(EventsBackgroundUpdatesStore, self).__init__(db_conn, hs)
+
+        self.register_background_update_handler(
+            self.EVENT_ORIGIN_SERVER_TS_NAME, self._background_reindex_origin_server_ts
+        )
+        self.register_background_update_handler(
+            self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME,
+            self._background_reindex_fields_sender,
+        )
+
+        self.register_background_index_update(
+            "event_contains_url_index",
+            index_name="event_contains_url_index",
+            table="events",
+            columns=["room_id", "topological_ordering", "stream_ordering"],
+            where_clause="contains_url = true AND outlier = false",
+        )
+
+        # an event_id index on event_search is useful for the purge_history
+        # api. Plus it means we get to enforce some integrity with a UNIQUE
+        # clause
+        self.register_background_index_update(
+            "event_search_event_id_idx",
+            index_name="event_search_event_id_idx",
+            table="event_search",
+            columns=["event_id"],
+            unique=True,
+            psql_only=True,
+        )
+
+        self.register_background_update_handler(
+            self.DELETE_SOFT_FAILED_EXTREMITIES,
+            self._cleanup_extremities_bg_update,
+        )
+
+    @defer.inlineCallbacks
+    def _background_reindex_fields_sender(self, progress, batch_size):
+        target_min_stream_id = progress["target_min_stream_id_inclusive"]
+        max_stream_id = progress["max_stream_id_exclusive"]
+        rows_inserted = progress.get("rows_inserted", 0)
+
+        INSERT_CLUMP_SIZE = 1000
+
+        def reindex_txn(txn):
+            sql = (
+                "SELECT stream_ordering, event_id, json FROM events"
+                " INNER JOIN event_json USING (event_id)"
+                " WHERE ? <= stream_ordering AND stream_ordering < ?"
+                " ORDER BY stream_ordering DESC"
+                " LIMIT ?"
+            )
+
+            txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
+
+            rows = txn.fetchall()
+            if not rows:
+                return 0
+
+            min_stream_id = rows[-1][0]
+
+            update_rows = []
+            for row in rows:
+                try:
+                    event_id = row[1]
+                    event_json = json.loads(row[2])
+                    sender = event_json["sender"]
+                    content = event_json["content"]
+
+                    contains_url = "url" in content
+                    if contains_url:
+                        contains_url &= isinstance(content["url"], text_type)
+                except (KeyError, AttributeError):
+                    # If the event is missing a necessary field then
+                    # skip over it.
+                    continue
+
+                update_rows.append((sender, contains_url, event_id))
+
+            sql = "UPDATE events SET sender = ?, contains_url = ? WHERE event_id = ?"
+
+            for index in range(0, len(update_rows), INSERT_CLUMP_SIZE):
+                clump = update_rows[index : index + INSERT_CLUMP_SIZE]
+                txn.executemany(sql, clump)
+
+            progress = {
+                "target_min_stream_id_inclusive": target_min_stream_id,
+                "max_stream_id_exclusive": min_stream_id,
+                "rows_inserted": rows_inserted + len(rows),
+            }
+
+            self._background_update_progress_txn(
+                txn, self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, progress
+            )
+
+            return len(rows)
+
+        result = yield self.runInteraction(
+            self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME, reindex_txn
+        )
+
+        if not result:
+            yield self._end_background_update(self.EVENT_FIELDS_SENDER_URL_UPDATE_NAME)
+
+        defer.returnValue(result)
+
+    @defer.inlineCallbacks
+    def _background_reindex_origin_server_ts(self, progress, batch_size):
+        target_min_stream_id = progress["target_min_stream_id_inclusive"]
+        max_stream_id = progress["max_stream_id_exclusive"]
+        rows_inserted = progress.get("rows_inserted", 0)
+
+        INSERT_CLUMP_SIZE = 1000
+
+        def reindex_search_txn(txn):
+            sql = (
+                "SELECT stream_ordering, event_id FROM events"
+                " WHERE ? <= stream_ordering AND stream_ordering < ?"
+                " ORDER BY stream_ordering DESC"
+                " LIMIT ?"
+            )
+
+            txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
+
+            rows = txn.fetchall()
+            if not rows:
+                return 0
+
+            min_stream_id = rows[-1][0]
+            event_ids = [row[1] for row in rows]
+
+            rows_to_update = []
+
+            chunks = [event_ids[i : i + 100] for i in range(0, len(event_ids), 100)]
+            for chunk in chunks:
+                ev_rows = self._simple_select_many_txn(
+                    txn,
+                    table="event_json",
+                    column="event_id",
+                    iterable=chunk,
+                    retcols=["event_id", "json"],
+                    keyvalues={},
+                )
+
+                for row in ev_rows:
+                    event_id = row["event_id"]
+                    event_json = json.loads(row["json"])
+                    try:
+                        origin_server_ts = event_json["origin_server_ts"]
+                    except (KeyError, AttributeError):
+                        # If the event is missing a necessary field then
+                        # skip over it.
+                        continue
+
+                    rows_to_update.append((origin_server_ts, event_id))
+
+            sql = "UPDATE events SET origin_server_ts = ? WHERE event_id = ?"
+
+            for index in range(0, len(rows_to_update), INSERT_CLUMP_SIZE):
+                clump = rows_to_update[index : index + INSERT_CLUMP_SIZE]
+                txn.executemany(sql, clump)
+
+            progress = {
+                "target_min_stream_id_inclusive": target_min_stream_id,
+                "max_stream_id_exclusive": min_stream_id,
+                "rows_inserted": rows_inserted + len(rows_to_update),
+            }
+
+            self._background_update_progress_txn(
+                txn, self.EVENT_ORIGIN_SERVER_TS_NAME, progress
+            )
+
+            return len(rows_to_update)
+
+        result = yield self.runInteraction(
+            self.EVENT_ORIGIN_SERVER_TS_NAME, reindex_search_txn
+        )
+
+        if not result:
+            yield self._end_background_update(self.EVENT_ORIGIN_SERVER_TS_NAME)
+
+        defer.returnValue(result)
+
+    @defer.inlineCallbacks
+    def _cleanup_extremities_bg_update(self, progress, batch_size):
+        """Background update to clean out extremities that should have been
+        deleted previously.
+
+        Mainly used to deal with the aftermath of #5269.
+        """
+
+        # This works by first copying all existing forward extremities into the
+        # `_extremities_to_check` table at start up, and then checking each
+        # event in that table whether we have any descendants that are not
+        # soft-failed/rejected. If that is the case then we delete that event
+        # from the forward extremities table.
+        #
+        # For efficiency, we do this in batches by recursively pulling out all
+        # descendants of a batch until we find the non soft-failed/rejected
+        # events, i.e. the set of descendants whose chain of prev events back
+        # to the batch of extremities are all soft-failed or rejected.
+        # Typically, we won't find any such events as extremities will rarely
+        # have any descendants, but if they do then we should delete those
+        # extremities.
+
+        def _cleanup_extremities_bg_update_txn(txn):
+            # The set of extremity event IDs that we're checking this round
+            original_set = set()
+
+            # A dict[str, set[str]] of event ID to their prev events.
+            graph = {}
+
+            # The set of descendants of the original set that are not rejected
+            # nor soft-failed. Ancestors of these events should be removed
+            # from the forward extremities table.
+            non_rejected_leaves = set()
+
+            # Set of event IDs that have been soft failed, and for which we
+            # should check if they have descendants which haven't been soft
+            # failed.
+            soft_failed_events_to_lookup = set()
+
+            # First, we get `batch_size` events from the table, pulling out
+            # their successor events, if any, and the successor events'
+            # rejection status.
+            txn.execute(
+                """SELECT prev_event_id, event_id, internal_metadata,
+                    rejections.event_id IS NOT NULL, events.outlier
+                FROM (
+                    SELECT event_id AS prev_event_id
+                    FROM _extremities_to_check
+                    LIMIT ?
+                ) AS f
+                LEFT JOIN event_edges USING (prev_event_id)
+                LEFT JOIN events USING (event_id)
+                LEFT JOIN event_json USING (event_id)
+                LEFT JOIN rejections USING (event_id)
+                """, (batch_size,)
+            )
+
+            for prev_event_id, event_id, metadata, rejected, outlier in txn:
+                original_set.add(prev_event_id)
+
+                if not event_id or outlier:
+                    # Common case where the forward extremity doesn't have any
+                    # descendants.
+                    continue
+
+                graph.setdefault(event_id, set()).add(prev_event_id)
+
+                soft_failed = False
+                if metadata:
+                    soft_failed = json.loads(metadata).get("soft_failed")
+
+                if soft_failed or rejected:
+                    soft_failed_events_to_lookup.add(event_id)
+                else:
+                    non_rejected_leaves.add(event_id)
+
+            # Now we recursively check all the soft-failed descendants we
+            # found above in the same way, until we have nothing left to
+            # check.
+            while soft_failed_events_to_lookup:
+                # We only want to do 100 at a time, so we split given list
+                # into two.
+                batch = list(soft_failed_events_to_lookup)
+                to_check, to_defer = batch[:100], batch[100:]
+                soft_failed_events_to_lookup = set(to_defer)
+
+                sql = """SELECT prev_event_id, event_id, internal_metadata,
+                    rejections.event_id IS NOT NULL
+                    FROM event_edges
+                    INNER JOIN events USING (event_id)
+                    INNER JOIN event_json USING (event_id)
+                    LEFT JOIN rejections USING (event_id)
+                    WHERE
+                        prev_event_id IN (%s)
+                        AND NOT events.outlier
+                """ % (
+                    ",".join("?" for _ in to_check),
+                )
+                txn.execute(sql, to_check)
+
+                for prev_event_id, event_id, metadata, rejected in txn:
+                    if event_id in graph:
+                        # Already handled this event previously, but we still
+                        # want to record the edge.
+                        graph[event_id].add(prev_event_id)
+                        continue
+
+                    graph[event_id] = {prev_event_id}
+
+                    soft_failed = json.loads(metadata).get("soft_failed")
+                    if soft_failed or rejected:
+                        soft_failed_events_to_lookup.add(event_id)
+                    else:
+                        non_rejected_leaves.add(event_id)
+
+            # We have a set of non-soft-failed descendants, so we recurse up
+            # the graph to find all ancestors and add them to the set of event
+            # IDs that we can delete from forward extremities table.
+            to_delete = set()
+            while non_rejected_leaves:
+                event_id = non_rejected_leaves.pop()
+                prev_event_ids = graph.get(event_id, set())
+                non_rejected_leaves.update(prev_event_ids)
+                to_delete.update(prev_event_ids)
+
+            to_delete.intersection_update(original_set)
+
+            deleted = self._simple_delete_many_txn(
+                txn=txn,
+                table="event_forward_extremities",
+                column="event_id",
+                iterable=to_delete,
+                keyvalues={},
+            )
+
+            logger.info(
+                "Deleted %d forward extremities of %d checked, to clean up #5269",
+                deleted,
+                len(original_set),
+            )
+
+            if deleted:
+                # We now need to invalidate the caches of these rooms
+                rows = self._simple_select_many_txn(
+                    txn,
+                    table="events",
+                    column="event_id",
+                    iterable=to_delete,
+                    keyvalues={},
+                    retcols=("room_id",)
+                )
+                room_ids = set(row["room_id"] for row in rows)
+                for room_id in room_ids:
+                    txn.call_after(
+                        self.get_latest_event_ids_in_room.invalidate,
+                        (room_id,)
+                    )
+
+            self._simple_delete_many_txn(
+                txn=txn,
+                table="_extremities_to_check",
+                column="event_id",
+                iterable=original_set,
+                keyvalues={},
+            )
+
+            return len(original_set)
+
+        num_handled = yield self.runInteraction(
+            "_cleanup_extremities_bg_update", _cleanup_extremities_bg_update_txn,
+        )
+
+        if not num_handled:
+            yield self._end_background_update(self.DELETE_SOFT_FAILED_EXTREMITIES)
+
+            def _drop_table_txn(txn):
+                txn.execute("DROP TABLE _extremities_to_check")
+
+            yield self.runInteraction(
+                "_cleanup_extremities_bg_update_drop_table",
+                _drop_table_txn,
+            )
+
+        defer.returnValue(num_handled)
diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py
index 663991a9b6..cc7df5cf14 100644
--- a/synapse/storage/events_worker.py
+++ b/synapse/storage/events_worker.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import division
+
 import itertools
 import logging
 from collections import namedtuple
@@ -76,6 +78,43 @@ class EventsWorkerStore(SQLBaseStore):
             desc="get_received_ts",
         )
 
+    def get_received_ts_by_stream_pos(self, stream_ordering):
+        """Given a stream ordering get an approximate timestamp of when it
+        happened.
+
+        This is done by simply taking the received ts of the first event that
+        has a stream ordering greater than or equal to the given stream pos.
+        If none exists returns the current time, on the assumption that it must
+        have happened recently.
+
+        Args:
+            stream_ordering (int)
+
+        Returns:
+            Deferred[int]
+        """
+
+        def _get_approximate_received_ts_txn(txn):
+            sql = """
+                SELECT received_ts FROM events
+                WHERE stream_ordering >= ?
+                LIMIT 1
+            """
+
+            txn.execute(sql, (stream_ordering,))
+            row = txn.fetchone()
+            if row and row[0]:
+                ts = row[0]
+            else:
+                ts = self.clock.time_msec()
+
+            return ts
+
+        return self.runInteraction(
+            "get_approximate_received_ts",
+            _get_approximate_received_ts_txn,
+        )
+
     @defer.inlineCallbacks
     def get_event(
         self,
@@ -103,7 +142,7 @@ class EventsWorkerStore(SQLBaseStore):
         Returns:
             Deferred : A FrozenEvent.
         """
-        events = yield self._get_events(
+        events = yield self.get_events_as_list(
             [event_id],
             check_redacted=check_redacted,
             get_prev_content=get_prev_content,
@@ -142,7 +181,7 @@ class EventsWorkerStore(SQLBaseStore):
         Returns:
             Deferred : Dict from event_id to event.
         """
-        events = yield self._get_events(
+        events = yield self.get_events_as_list(
             event_ids,
             check_redacted=check_redacted,
             get_prev_content=get_prev_content,
@@ -152,13 +191,32 @@ class EventsWorkerStore(SQLBaseStore):
         defer.returnValue({e.event_id: e for e in events})
 
     @defer.inlineCallbacks
-    def _get_events(
+    def get_events_as_list(
         self,
         event_ids,
         check_redacted=True,
         get_prev_content=False,
         allow_rejected=False,
     ):
+        """Get events from the database and return in a list in the same order
+        as given by `event_ids` arg.
+
+        Args:
+            event_ids (list): The event_ids of the events to fetch
+            check_redacted (bool): If True, check if event has been redacted
+                and redact it.
+            get_prev_content (bool): If True and event is a state event,
+                include the previous states content in the unsigned field.
+            allow_rejected (bool): If True return rejected events.
+
+        Returns:
+            Deferred[list[EventBase]]: List of events fetched from the database. The
+            events are in the same order as `event_ids` arg.
+
+            Note that the returned list may be smaller than the list of event
+            IDs if not all events could be fetched.
+        """
+
         if not event_ids:
             defer.returnValue([])
 
@@ -202,21 +260,22 @@ class EventsWorkerStore(SQLBaseStore):
                     #
                     # The problem is that we end up at this point when an event
                     # which has been redacted is pulled out of the database by
-                    # _enqueue_events, because _enqueue_events needs to check the
-                    # redaction before it can cache the redacted event. So obviously,
-                    # calling get_event to get the redacted event out of the database
-                    # gives us an infinite loop.
+                    # _enqueue_events, because _enqueue_events needs to check
+                    # the redaction before it can cache the redacted event. So
+                    # obviously, calling get_event to get the redacted event out
+                    # of the database gives us an infinite loop.
                     #
-                    # For now (quick hack to fix during 0.99 release cycle), we just
-                    # go and fetch the relevant row from the db, but it would be nice
-                    # to think about how we can cache this rather than hit the db
-                    # every time we access a redaction event.
+                    # For now (quick hack to fix during 0.99 release cycle), we
+                    # just go and fetch the relevant row from the db, but it
+                    # would be nice to think about how we can cache this rather
+                    # than hit the db every time we access a redaction event.
                     #
                     # One thought on how to do this:
-                    #  1. split _get_events up so that it is divided into (a) get the
-                    #     rawish event from the db/cache, (b) do the redaction/rejection
-                    #     filtering
-                    #  2. have _get_event_from_row just call the first half of that
+                    #  1. split get_events_as_list up so that it is divided into
+                    #     (a) get the rawish event from the db/cache, (b) do the
+                    #     redaction/rejection filtering
+                    #  2. have _get_event_from_row just call the first half of
+                    #     that
 
                     orig_sender = yield self._simple_select_one_onecol(
                         table="events",
@@ -590,4 +649,79 @@ class EventsWorkerStore(SQLBaseStore):
 
             return res
 
-        return self.runInteraction("get_rejection_reasons", f)
+        return self.runInteraction("get_seen_events_with_rejections", f)
+
+    def _get_total_state_event_counts_txn(self, txn, room_id):
+        """
+        See get_total_state_event_counts.
+        """
+        # We join against the events table as that has an index on room_id
+        sql = """
+            SELECT COUNT(*) FROM state_events
+            INNER JOIN events USING (room_id, event_id)
+            WHERE room_id=?
+        """
+        txn.execute(sql, (room_id,))
+        row = txn.fetchone()
+        return row[0] if row else 0
+
+    def get_total_state_event_counts(self, room_id):
+        """
+        Gets the total number of state events in a room.
+
+        Args:
+            room_id (str)
+
+        Returns:
+            Deferred[int]
+        """
+        return self.runInteraction(
+            "get_total_state_event_counts",
+            self._get_total_state_event_counts_txn, room_id
+        )
+
+    def _get_current_state_event_counts_txn(self, txn, room_id):
+        """
+        See get_current_state_event_counts.
+        """
+        sql = "SELECT COUNT(*) FROM current_state_events WHERE room_id=?"
+        txn.execute(sql, (room_id,))
+        row = txn.fetchone()
+        return row[0] if row else 0
+
+    def get_current_state_event_counts(self, room_id):
+        """
+        Gets the current number of state events in a room.
+
+        Args:
+            room_id (str)
+
+        Returns:
+            Deferred[int]
+        """
+        return self.runInteraction(
+            "get_current_state_event_counts",
+            self._get_current_state_event_counts_txn, room_id
+        )
+
+    @defer.inlineCallbacks
+    def get_room_complexity(self, room_id):
+        """
+        Get a rough approximation of the complexity of the room. This is used by
+        remote servers to decide whether they wish to join the room or not.
+        Higher complexity value indicates that being in the room will consume
+        more resources.
+
+        Args:
+            room_id (str)
+
+        Returns:
+            Deferred[dict[str:int]] of complexity version to complexity.
+        """
+        state_events = yield self.get_current_state_event_counts(room_id)
+
+        # Call this one "v1", so we can introduce new ones as we want to develop
+        # it.
+        complexity_v1 = round(state_events / 500, 2)
+
+        defer.returnValue({"v1": complexity_v1})
diff --git a/synapse/storage/keys.py b/synapse/storage/keys.py
index 030cd1e5a3..e3655ad8d7 100644
--- a/synapse/storage/keys.py
+++ b/synapse/storage/keys.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2019 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,17 +14,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import hashlib
+import itertools
 import logging
 
 import six
 
+import attr
 from signedjson.key import decode_verify_key_bytes
 
-import OpenSSL
-from twisted.internet import defer
-
-from synapse.util.caches.descriptors import cachedInlineCallbacks
+from synapse.util import batch_iter
+from synapse.util.caches.descriptors import cached, cachedList
 
 from ._base import SQLBaseStore
 
@@ -37,114 +37,117 @@ else:
     db_binary_type = memoryview
 
 
+@attr.s(slots=True, frozen=True)
+class FetchKeyResult(object):
+    verify_key = attr.ib()  # VerifyKey: the key itself
+    valid_until_ts = attr.ib()  # int: how long we can use this key for
+
+
 class KeyStore(SQLBaseStore):
-    """Persistence for signature verification keys and tls X.509 certificates
+    """Persistence for signature verification keys
     """
 
-    @defer.inlineCallbacks
-    def get_server_certificate(self, server_name):
-        """Retrieve the TLS X.509 certificate for the given server
-        Args:
-            server_name (bytes): The name of the server.
-        Returns:
-            (OpenSSL.crypto.X509): The tls certificate.
+    @cached()
+    def _get_server_verify_key(self, server_name_and_key_id):
+        raise NotImplementedError()
+
+    @cachedList(
+        cached_method_name="_get_server_verify_key", list_name="server_name_and_key_ids"
+    )
+    def get_server_verify_keys(self, server_name_and_key_ids):
         """
-        tls_certificate_bytes, = yield self._simple_select_one(
-            table="server_tls_certificates",
-            keyvalues={"server_name": server_name},
-            retcols=("tls_certificate",),
-            desc="get_server_certificate",
-        )
-        tls_certificate = OpenSSL.crypto.load_certificate(
-            OpenSSL.crypto.FILETYPE_ASN1, tls_certificate_bytes
-        )
-        defer.returnValue(tls_certificate)
-
-    def store_server_certificate(
-        self, server_name, from_server, time_now_ms, tls_certificate
-    ):
-        """Stores the TLS X.509 certificate for the given server
         Args:
-            server_name (str): The name of the server.
-            from_server (str): Where the certificate was looked up
-            time_now_ms (int): The time now in milliseconds
-            tls_certificate (OpenSSL.crypto.X509): The X.509 certificate.
-        """
-        tls_certificate_bytes = OpenSSL.crypto.dump_certificate(
-            OpenSSL.crypto.FILETYPE_ASN1, tls_certificate
-        )
-        fingerprint = hashlib.sha256(tls_certificate_bytes).hexdigest()
-        return self._simple_upsert(
-            table="server_tls_certificates",
-            keyvalues={"server_name": server_name, "fingerprint": fingerprint},
-            values={
-                "from_server": from_server,
-                "ts_added_ms": time_now_ms,
-                "tls_certificate": db_binary_type(tls_certificate_bytes),
-            },
-            desc="store_server_certificate",
-        )
+            server_name_and_key_ids (iterable[Tuple[str, str]]):
+                iterable of (server_name, key-id) tuples to fetch keys for
 
-    @cachedInlineCallbacks()
-    def _get_server_verify_key(self, server_name, key_id):
-        verify_key_bytes = yield self._simple_select_one_onecol(
-            table="server_signature_keys",
-            keyvalues={"server_name": server_name, "key_id": key_id},
-            retcol="verify_key",
-            desc="_get_server_verify_key",
-            allow_none=True,
-        )
-
-        if verify_key_bytes:
-            defer.returnValue(decode_verify_key_bytes(key_id, bytes(verify_key_bytes)))
-
-    @defer.inlineCallbacks
-    def get_server_verify_keys(self, server_name, key_ids):
-        """Retrieve the NACL verification key for a given server for the given
-        key_ids
-        Args:
-            server_name (str): The name of the server.
-            key_ids (iterable[str]): key_ids to try and look up.
         Returns:
-            Deferred: resolves to dict[str, VerifyKey]: map from
-               key_id to verification key.
+            Deferred: resolves to dict[Tuple[str, str], FetchKeyResult|None]:
+                map from (server_name, key_id) -> FetchKeyResult, or None if the key is
+                unknown
         """
         keys = {}
-        for key_id in key_ids:
-            key = yield self._get_server_verify_key(server_name, key_id)
-            if key:
-                keys[key_id] = key
-        defer.returnValue(keys)
 
-    def store_server_verify_key(
-        self, server_name, from_server, time_now_ms, verify_key
-    ):
-        """Stores a NACL verification key for the given server.
-        Args:
-            server_name (str): The name of the server.
-            from_server (str): Where the verification key was looked up
-            time_now_ms (int): The time now in milliseconds
-            verify_key (nacl.signing.VerifyKey): The NACL verify key.
-        """
-        key_id = "%s:%s" % (verify_key.alg, verify_key.version)
+        def _get_keys(txn, batch):
+            """Processes a batch of keys to fetch, and adds the result to `keys`."""
+
+            # batch_iter always returns tuples so it's safe to do len(batch)
+            sql = (
+                "SELECT server_name, key_id, verify_key, ts_valid_until_ms "
+                "FROM server_signature_keys WHERE 1=0"
+            ) + " OR (server_name=? AND key_id=?)" * len(batch)
+
+            txn.execute(sql, tuple(itertools.chain.from_iterable(batch)))
+
+            for row in txn:
+                server_name, key_id, key_bytes, ts_valid_until_ms = row
+
+                if ts_valid_until_ms is None:
+                    # Old keys may be stored with a ts_valid_until_ms of null,
+                    # in which case we treat this as if it was set to `0`, i.e.
+                    # it won't match key requests that define a minimum
+                    # `ts_valid_until_ms`.
+                    ts_valid_until_ms = 0
+
+                res = FetchKeyResult(
+                    verify_key=decode_verify_key_bytes(key_id, bytes(key_bytes)),
+                    valid_until_ts=ts_valid_until_ms,
+                )
+                keys[(server_name, key_id)] = res
 
-        # XXX fix this to not need a lock (#3819)
         def _txn(txn):
-            self._simple_upsert_txn(
-                txn,
-                table="server_signature_keys",
-                keyvalues={"server_name": server_name, "key_id": key_id},
-                values={
-                    "from_server": from_server,
-                    "ts_added_ms": time_now_ms,
-                    "verify_key": db_binary_type(verify_key.encode()),
-                },
-            )
-            txn.call_after(
-                self._get_server_verify_key.invalidate, (server_name, key_id)
-            )
+            for batch in batch_iter(server_name_and_key_ids, 50):
+                _get_keys(txn, batch)
+            return keys
 
-        return self.runInteraction("store_server_verify_key", _txn)
+        return self.runInteraction("get_server_verify_keys", _txn)
+
+    def store_server_verify_keys(self, from_server, ts_added_ms, verify_keys):
+        """Stores NACL verification keys for remote servers.
+        Args:
+            from_server (str): Where the verification keys were looked up
+            ts_added_ms (int): The time to record that the key was added
+            verify_keys (iterable[tuple[str, str, FetchKeyResult]]):
+                keys to be stored. Each entry is a triplet of
+                (server_name, key_id, key).
+        """
+        key_values = []
+        value_values = []
+        invalidations = []
+        for server_name, key_id, fetch_result in verify_keys:
+            key_values.append((server_name, key_id))
+            value_values.append(
+                (
+                    from_server,
+                    ts_added_ms,
+                    fetch_result.valid_until_ts,
+                    db_binary_type(fetch_result.verify_key.encode()),
+                )
+            )
+            # invalidate takes a tuple corresponding to the params of
+            # _get_server_verify_key. _get_server_verify_key only takes one
+            # param, which is itself the 2-tuple (server_name, key_id).
+            invalidations.append((server_name, key_id))
+
+        def _invalidate(res):
+            f = self._get_server_verify_key.invalidate
+            for i in invalidations:
+                f((i, ))
+            return res
+
+        return self.runInteraction(
+            "store_server_verify_keys",
+            self._simple_upsert_many_txn,
+            table="server_signature_keys",
+            key_names=("server_name", "key_id"),
+            key_values=key_values,
+            value_names=(
+                "from_server",
+                "ts_added_ms",
+                "ts_valid_until_ms",
+                "verify_key",
+            ),
+            value_values=value_values,
+        ).addCallback(_invalidate)
 
     def store_server_keys_json(
         self, server_name, key_id, from_server, ts_now_ms, ts_expires_ms, key_json_bytes
@@ -188,8 +191,8 @@ class KeyStore(SQLBaseStore):
         Args:
             server_keys (list): List of (server_name, key_id, source) triplets.
         Returns:
-            Dict mapping (server_name, key_id, source) triplets to dicts with
-            "ts_valid_until_ms" and "key_json" keys.
+            Deferred[dict[Tuple[str, str, str|None], list[dict]]]:
+                Dict mapping (server_name, key_id, source) triplets to lists of dicts
         """
 
         def _get_server_keys_json_txn(txn):
diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py
index c1711bc8bd..f2c1bed487 100644
--- a/synapse/storage/prepare_database.py
+++ b/synapse/storage/prepare_database.py
@@ -20,12 +20,14 @@ import logging
 import os
 import re
 
+from synapse.storage.engines.postgres import PostgresEngine
+
 logger = logging.getLogger(__name__)
 
 
 # Remember to update this number every time a change is made to database
 # schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 54
+SCHEMA_VERSION = 55
 
 dir_path = os.path.abspath(os.path.dirname(__file__))
 
@@ -115,8 +117,16 @@ def _setup_new_database(cur, database_engine):
 
     valid_dirs = []
     pattern = re.compile(r"^\d+(\.sql)?$")
+
+    if isinstance(database_engine, PostgresEngine):
+        specific = "postgres"
+    else:
+        specific = "sqlite"
+
+    specific_pattern = re.compile(r"^\d+(\.sql." + specific + r")?$")
+
     for filename in directory_entries:
-        match = pattern.match(filename)
+        match = pattern.match(filename) or specific_pattern.match(filename)
         abs_path = os.path.join(current_dir, filename)
         if match and os.path.isdir(abs_path):
             ver = int(match.group(0))
@@ -136,7 +146,9 @@ def _setup_new_database(cur, database_engine):
 
     directory_entries = os.listdir(sql_dir)
 
-    for filename in fnmatch.filter(directory_entries, "*.sql"):
+    for filename in sorted(fnmatch.filter(directory_entries, "*.sql") + fnmatch.filter(
+        directory_entries, "*.sql." + specific
+    )):
         sql_loc = os.path.join(sql_dir, filename)
         logger.debug("Applying schema %s", sql_loc)
         executescript(cur, sql_loc)
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index e30b86c346..d36917e4d6 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-# Copyright 2014 - 2016 OpenMarket Ltd
+# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,25 +15,32 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
 import re
 
+from six import iterkeys
 from six.moves import range
 
 from twisted.internet import defer
 
 from synapse.api.constants import UserTypes
-from synapse.api.errors import Codes, StoreError
+from synapse.api.errors import Codes, StoreError, ThreepidValidationError
 from synapse.storage import background_updates
 from synapse.storage._base import SQLBaseStore
 from synapse.types import UserID
 from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
 
+THIRTY_MINUTES_IN_MS = 30 * 60 * 1000
+
+logger = logging.getLogger(__name__)
+
 
 class RegistrationWorkerStore(SQLBaseStore):
     def __init__(self, db_conn, hs):
         super(RegistrationWorkerStore, self).__init__(db_conn, hs)
 
         self.config = hs.config
+        self.clock = hs.get_clock()
 
     @cached()
     def get_user_by_id(self, user_id):
@@ -86,6 +95,176 @@ class RegistrationWorkerStore(SQLBaseStore):
             "get_user_by_access_token", self._query_for_auth, token
         )
 
+    @cachedInlineCallbacks()
+    def get_expiration_ts_for_user(self, user_id):
+        """Get the expiration timestamp for the account bearing a given user ID.
+
+        Args:
+            user_id (str): The ID of the user.
+        Returns:
+            defer.Deferred: None, if the account has no expiration timestamp,
+                otherwise int representation of the timestamp (as a number of
+                milliseconds since epoch).
+        """
+        res = yield self._simple_select_one_onecol(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            retcol="expiration_ts_ms",
+            allow_none=True,
+            desc="get_expiration_ts_for_user",
+        )
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def set_account_validity_for_user(self, user_id, expiration_ts, email_sent,
+                                      renewal_token=None):
+        """Updates the account validity properties of the given account, with the
+        given values.
+
+        Args:
+            user_id (str): ID of the account to update properties for.
+            expiration_ts (int): New expiration date, as a timestamp in milliseconds
+                since epoch.
+            email_sent (bool): True means a renewal email has been sent for this
+                account and there's no need to send another one for the current validity
+                period.
+            renewal_token (str): Renewal token the user can use to extend the validity
+                of their account. Defaults to no token.
+        """
+        def set_account_validity_for_user_txn(txn):
+            self._simple_update_txn(
+                txn=txn,
+                table="account_validity",
+                keyvalues={"user_id": user_id},
+                updatevalues={
+                    "expiration_ts_ms": expiration_ts,
+                    "email_sent": email_sent,
+                    "renewal_token": renewal_token,
+                },
+            )
+            self._invalidate_cache_and_stream(
+                txn, self.get_expiration_ts_for_user, (user_id,),
+            )
+
+        yield self.runInteraction(
+            "set_account_validity_for_user",
+            set_account_validity_for_user_txn,
+        )
+
+    @defer.inlineCallbacks
+    def set_renewal_token_for_user(self, user_id, renewal_token):
+        """Defines a renewal token for a given user.
+
+        Args:
+            user_id (str): ID of the user to set the renewal token for.
+            renewal_token (str): Random unique string that will be used to renew the
+                user's account.
+
+        Raises:
+            StoreError: The provided token is already set for another user.
+        """
+        yield self._simple_update_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            updatevalues={"renewal_token": renewal_token},
+            desc="set_renewal_token_for_user",
+        )
+
+    @defer.inlineCallbacks
+    def get_user_from_renewal_token(self, renewal_token):
+        """Get a user ID from a renewal token.
+
+        Args:
+            renewal_token (str): The renewal token to perform the lookup with.
+
+        Returns:
+            defer.Deferred[str]: The ID of the user to which the token belongs.
+        """
+        res = yield self._simple_select_one_onecol(
+            table="account_validity",
+            keyvalues={"renewal_token": renewal_token},
+            retcol="user_id",
+            desc="get_user_from_renewal_token",
+        )
+
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def get_renewal_token_for_user(self, user_id):
+        """Get the renewal token associated with a given user ID.
+
+        Args:
+            user_id (str): The user ID to lookup a token for.
+
+        Returns:
+            defer.Deferred[str]: The renewal token associated with this user ID.
+        """
+        res = yield self._simple_select_one_onecol(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            retcol="renewal_token",
+            desc="get_renewal_token_for_user",
+        )
+
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def get_users_expiring_soon(self):
+        """Selects users whose account will expire in the [now, now + renew_at] time
+        window (see configuration for account_validity for information on what renew_at
+        refers to).
+
+        Returns:
+            Deferred: Resolves to a list[dict[user_id (str), expiration_ts_ms (int)]]
+        """
+        def select_users_txn(txn, now_ms, renew_at):
+            sql = (
+                "SELECT user_id, expiration_ts_ms FROM account_validity"
+                " WHERE email_sent = ? AND (expiration_ts_ms - ?) <= ?"
+            )
+            values = [False, now_ms, renew_at]
+            txn.execute(sql, values)
+            return self.cursor_to_dict(txn)
+
+        res = yield self.runInteraction(
+            "get_users_expiring_soon",
+            select_users_txn,
+            self.clock.time_msec(), self.config.account_validity.renew_at,
+        )
+
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def set_renewal_mail_status(self, user_id, email_sent):
+        """Sets or unsets the flag that indicates whether a renewal email has been sent
+        to the user (and the user hasn't renewed their account yet).
+
+        Args:
+            user_id (str): ID of the user to set/unset the flag for.
+            email_sent (bool): Flag which indicates whether a renewal email has been sent
+                to this user.
+        """
+        yield self._simple_update_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            updatevalues={"email_sent": email_sent},
+            desc="set_renewal_mail_status",
+        )
+
+    @defer.inlineCallbacks
+    def delete_account_validity_for_user(self, user_id):
+        """Deletes the entry for the given user in the account validity table, removing
+        their expiration date and renewal token.
+
+        Args:
+            user_id (str): ID of the user to remove from the account validity table.
+        """
+        yield self._simple_delete_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            desc="delete_account_validity_for_user",
+        )
+
     @defer.inlineCallbacks
     def is_server_admin(self, user):
         res = yield self._simple_select_one_onecol(
@@ -263,7 +442,7 @@ class RegistrationWorkerStore(SQLBaseStore):
         defer.returnValue(None)
 
     @defer.inlineCallbacks
-    def get_user_id_by_threepid(self, medium, address):
+    def get_user_id_by_threepid(self, medium, address, require_verified=False):
         """Returns user id from threepid
 
         Args:
@@ -425,6 +604,8 @@ class RegistrationStore(
             columns=["creation_ts"],
         )
 
+        self._account_validity = hs.config.account_validity
+
         # we no longer use refresh tokens, but it's possible that some people
         # might have a background update queued to build this index. Just
         # clear the background update.
@@ -434,6 +615,77 @@ class RegistrationStore(
             "user_threepids_grandfather", self._bg_user_threepids_grandfather,
         )
 
+        self.register_background_update_handler(
+            "users_set_deactivated_flag", self._backgroud_update_set_deactivated_flag,
+        )
+
+        # Create a background job for culling expired 3PID validity tokens
+        hs.get_clock().looping_call(
+            self.cull_expired_threepid_validation_tokens, THIRTY_MINUTES_IN_MS,
+        )
+
+    @defer.inlineCallbacks
+    def _backgroud_update_set_deactivated_flag(self, progress, batch_size):
+        """Retrieves a list of all deactivated users and sets the 'deactivated' flag to 1
+        for each of them.
+        """
+
+        last_user = progress.get("user_id", "")
+
+        def _backgroud_update_set_deactivated_flag_txn(txn):
+            txn.execute(
+                """
+                SELECT
+                    users.name,
+                    COUNT(access_tokens.token) AS count_tokens,
+                    COUNT(user_threepids.address) AS count_threepids
+                FROM users
+                    LEFT JOIN access_tokens ON (access_tokens.user_id = users.name)
+                    LEFT JOIN user_threepids ON (user_threepids.user_id = users.name)
+                WHERE (users.password_hash IS NULL OR users.password_hash = '')
+                AND (users.appservice_id IS NULL OR users.appservice_id = '')
+                AND users.is_guest = 0
+                AND users.name > ?
+                GROUP BY users.name
+                ORDER BY users.name ASC
+                LIMIT ?;
+                """,
+                (last_user, batch_size),
+            )
+
+            rows = self.cursor_to_dict(txn)
+
+            if not rows:
+                return True
+
+            rows_processed_nb = 0
+
+            for user in rows:
+                if not user["count_tokens"] and not user["count_threepids"]:
+                    self.set_user_deactivated_status_txn(txn, user["user_id"], True)
+                    rows_processed_nb += 1
+
+            logger.info("Marked %d rows as deactivated", rows_processed_nb)
+
+            self._background_update_progress_txn(
+                txn, "users_set_deactivated_flag", {"user_id": rows[-1]["name"]}
+            )
+
+            if batch_size > len(rows):
+                return True
+            else:
+                return False
+
+        end = yield self.runInteraction(
+            "users_set_deactivated_flag",
+            _backgroud_update_set_deactivated_flag_txn,
+        )
+
+        if end:
+            yield self._end_background_update("users_set_deactivated_flag")
+
+        defer.returnValue(batch_size)
+
     @defer.inlineCallbacks
     def add_access_token_to_user(self, user_id, token, device_id=None):
         """Adds an access token for the given user.
@@ -561,9 +813,13 @@ class RegistrationStore(
                         "user_type": user_type,
                     },
                 )
+
         except self.database_engine.module.IntegrityError:
             raise StoreError(400, "User ID already taken.", errcode=Codes.USER_IN_USE)
 
+        if self._account_validity.enabled:
+            self.set_expiration_date_for_user_txn(txn, user_id)
+
         if token:
             # it's possible for this to get a conflict, but only for a single user
             # since tokens are namespaced based on their user ID
@@ -798,7 +1054,6 @@ class RegistrationStore(
         We do this by grandfathering in existing user threepids assuming that
         they used one of the server configured trusted identity servers.
         """
-
         id_servers = set(self.config.trusted_third_party_id_servers)
 
         def _bg_user_threepids_grandfather_txn(txn):
@@ -819,3 +1074,327 @@ class RegistrationStore(
         yield self._end_background_update("user_threepids_grandfather")
 
         defer.returnValue(1)
+
+    def get_threepid_validation_session(
+        self,
+        medium,
+        client_secret,
+        address=None,
+        sid=None,
+        validated=True,
+    ):
+        """Gets a session_id and last_send_attempt (if available) for a
+        client_secret/medium/(address|session_id) combo
+
+        Args:
+            medium (str|None): The medium of the 3PID
+            address (str|None): The address of the 3PID
+            sid (str|None): The ID of the validation session
+            client_secret (str|None): A unique string provided by the client to
+                help identify this validation attempt
+            validated (bool|None): Whether sessions should be filtered by
+                whether they have been validated already or not. None to
+                perform no filtering
+
+        Returns:
+            deferred {str, int}|None: A dict containing the
+                latest session_id and send_attempt count for this 3PID.
+                Otherwise None if there hasn't been a previous attempt
+        """
+        keyvalues = {
+            "medium": medium,
+            "client_secret": client_secret,
+        }
+        if address:
+            keyvalues["address"] = address
+        if sid:
+            keyvalues["session_id"] = sid
+
+        assert(address or sid)
+
+        def get_threepid_validation_session_txn(txn):
+            sql = """
+                SELECT address, session_id, medium, client_secret,
+                last_send_attempt, validated_at
+                FROM threepid_validation_session WHERE %s
+                """ % (" AND ".join("%s = ?" % k for k in iterkeys(keyvalues)),)
+
+            if validated is not None:
+                sql += " AND validated_at IS " + ("NOT NULL" if validated else "NULL")
+
+            sql += " LIMIT 1"
+
+            txn.execute(sql, list(keyvalues.values()))
+            rows = self.cursor_to_dict(txn)
+            if not rows:
+                return None
+
+            return rows[0]
+
+        return self.runInteraction(
+            "get_threepid_validation_session",
+            get_threepid_validation_session_txn,
+        )
+
+    def validate_threepid_session(
+        self,
+        session_id,
+        client_secret,
+        token,
+        current_ts,
+    ):
+        """Attempt to validate a threepid session using a token
+
+        Args:
+            session_id (str): The id of a validation session
+            client_secret (str): A unique string provided by the client to
+                help identify this validation attempt
+            token (str): A validation token
+            current_ts (int): The current unix time in milliseconds. Used for
+                checking token expiry status
+
+        Returns:
+            deferred str|None: A str representing a link to redirect the user
+            to if there is one.
+        """
+        # Insert everything into a transaction in order to run atomically
+        def validate_threepid_session_txn(txn):
+            row = self._simple_select_one_txn(
+                txn,
+                table="threepid_validation_session",
+                keyvalues={"session_id": session_id},
+                retcols=["client_secret", "validated_at"],
+                allow_none=True,
+            )
+
+            if not row:
+                raise ThreepidValidationError(400, "Unknown session_id")
+            retrieved_client_secret = row["client_secret"]
+            validated_at = row["validated_at"]
+
+            if retrieved_client_secret != client_secret:
+                raise ThreepidValidationError(
+                    400, "This client_secret does not match the provided session_id",
+                )
+
+            row = self._simple_select_one_txn(
+                txn,
+                table="threepid_validation_token",
+                keyvalues={"session_id": session_id, "token": token},
+                retcols=["expires", "next_link"],
+                allow_none=True,
+            )
+
+            if not row:
+                raise ThreepidValidationError(
+                    400, "Validation token not found or has expired",
+                )
+            expires = row["expires"]
+            next_link = row["next_link"]
+
+            # If the session is already validated, no need to revalidate
+            if validated_at:
+                return next_link
+
+            if expires <= current_ts:
+                raise ThreepidValidationError(
+                    400, "This token has expired. Please request a new one",
+                )
+
+            # Looks good. Validate the session
+            self._simple_update_txn(
+                txn,
+                table="threepid_validation_session",
+                keyvalues={"session_id": session_id},
+                updatevalues={"validated_at": self.clock.time_msec()},
+            )
+
+            return next_link
+
+        # Return next_link if it exists
+        return self.runInteraction(
+            "validate_threepid_session_txn",
+            validate_threepid_session_txn,
+        )
+
+    def upsert_threepid_validation_session(
+        self,
+        medium,
+        address,
+        client_secret,
+        send_attempt,
+        session_id,
+        validated_at=None,
+    ):
+        """Upsert a threepid validation session
+        Args:
+            medium (str): The medium of the 3PID
+            address (str): The address of the 3PID
+            client_secret (str): A unique string provided by the client to
+                help identify this validation attempt
+            send_attempt (int): The latest send_attempt on this session
+            session_id (str): The id of this validation session
+            validated_at (int|None): The unix timestamp in milliseconds of
+                when the session was marked as valid
+        """
+        insertion_values = {
+            "medium": medium,
+            "address": address,
+            "client_secret": client_secret,
+        }
+
+        if validated_at:
+            insertion_values["validated_at"] = validated_at
+
+        return self._simple_upsert(
+            table="threepid_validation_session",
+            keyvalues={"session_id": session_id},
+            values={"last_send_attempt": send_attempt},
+            insertion_values=insertion_values,
+            desc="upsert_threepid_validation_session",
+        )
+
+    def start_or_continue_validation_session(
+        self,
+        medium,
+        address,
+        session_id,
+        client_secret,
+        send_attempt,
+        next_link,
+        token,
+        token_expires,
+    ):
+        """Creates a new threepid validation session if it does not already
+        exist and associates a new validation token with it
+
+        Args:
+            medium (str): The medium of the 3PID
+            address (str): The address of the 3PID
+            session_id (str): The id of this validation session
+            client_secret (str): A unique string provided by the client to
+                help identify this validation attempt
+            send_attempt (int): The latest send_attempt on this session
+            next_link (str|None): The link to redirect the user to upon
+                successful validation
+            token (str): The validation token
+            token_expires (int): The timestamp for which after the token
+                will no longer be valid
+        """
+        def start_or_continue_validation_session_txn(txn):
+            # Create or update a validation session
+            self._simple_upsert_txn(
+                txn,
+                table="threepid_validation_session",
+                keyvalues={"session_id": session_id},
+                values={"last_send_attempt": send_attempt},
+                insertion_values={
+                    "medium": medium,
+                    "address": address,
+                    "client_secret": client_secret,
+                },
+            )
+
+            # Create a new validation token with this session ID
+            self._simple_insert_txn(
+                txn,
+                table="threepid_validation_token",
+                values={
+                    "session_id": session_id,
+                    "token": token,
+                    "next_link": next_link,
+                    "expires": token_expires,
+                },
+            )
+
+        return self.runInteraction(
+            "start_or_continue_validation_session",
+            start_or_continue_validation_session_txn,
+        )
+
+    def cull_expired_threepid_validation_tokens(self):
+        """Remove threepid validation tokens with expiry dates that have passed"""
+        def cull_expired_threepid_validation_tokens_txn(txn, ts):
+            sql = """
+            DELETE FROM threepid_validation_token WHERE
+            expires < ?
+            """
+            return txn.execute(sql, (ts,))
+
+        return self.runInteraction(
+            "cull_expired_threepid_validation_tokens",
+            cull_expired_threepid_validation_tokens_txn,
+            self.clock.time_msec(),
+        )
+
+    def delete_threepid_session(self, session_id):
+        """Removes a threepid validation session from the database. This can
+        be done after validation has been performed and whatever action was
+        waiting on it has been carried out
+
+        Args:
+            session_id (str): The ID of the session to delete
+        """
+        def delete_threepid_session_txn(txn):
+            self._simple_delete_txn(
+                txn,
+                table="threepid_validation_token",
+                keyvalues={"session_id": session_id},
+            )
+            self._simple_delete_txn(
+                txn,
+                table="threepid_validation_session",
+                keyvalues={"session_id": session_id},
+            )
+
+        return self.runInteraction(
+            "delete_threepid_session",
+            delete_threepid_session_txn,
+        )
+
+    def set_user_deactivated_status_txn(self, txn, user_id, deactivated):
+        self._simple_update_one_txn(
+            txn=txn,
+            table="users",
+            keyvalues={"name": user_id},
+            updatevalues={"deactivated": 1 if deactivated else 0},
+        )
+        self._invalidate_cache_and_stream(
+            txn, self.get_user_deactivated_status, (user_id,),
+        )
+
+    @defer.inlineCallbacks
+    def set_user_deactivated_status(self, user_id, deactivated):
+        """Set the `deactivated` property for the provided user to the provided value.
+
+        Args:
+            user_id (str): The ID of the user to set the status for.
+            deactivated (bool): The value to set for `deactivated`.
+        """
+
+        yield self.runInteraction(
+            "set_user_deactivated_status",
+            self.set_user_deactivated_status_txn,
+            user_id, deactivated,
+        )
+
+    @cachedInlineCallbacks()
+    def get_user_deactivated_status(self, user_id):
+        """Retrieve the value for the `deactivated` property for the provided user.
+
+        Args:
+            user_id (str): The ID of the user to retrieve the status for.
+
+        Returns:
+            defer.Deferred(bool): The requested value.
+        """
+
+        res = yield self._simple_select_one_onecol(
+            table="users",
+            keyvalues={"name": user_id},
+            retcol="deactivated",
+            desc="get_user_deactivated_status",
+        )
+
+        # Convert the integer into a boolean.
+        defer.returnValue(res == 1)
diff --git a/synapse/storage/relations.py b/synapse/storage/relations.py
new file mode 100644
index 0000000000..4c83800cca
--- /dev/null
+++ b/synapse/storage/relations.py
@@ -0,0 +1,476 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+import attr
+
+from twisted.internet import defer
+
+from synapse.api.constants import RelationTypes
+from synapse.api.errors import SynapseError
+from synapse.storage._base import SQLBaseStore
+from synapse.storage.stream import generate_pagination_where_clause
+from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
+
+logger = logging.getLogger(__name__)
+
+
+@attr.s
+class PaginationChunk(object):
+    """Returned by relation pagination APIs.
+
+    Attributes:
+        chunk (list): The rows returned by pagination
+        next_batch (Any|None): Token to fetch next set of results with, if
+            None then there are no more results.
+        prev_batch (Any|None): Token to fetch previous set of results with, if
+            None then there are no previous results.
+    """
+
+    chunk = attr.ib()
+    next_batch = attr.ib(default=None)
+    prev_batch = attr.ib(default=None)
+
+    def to_dict(self):
+        d = {"chunk": self.chunk}
+
+        if self.next_batch:
+            d["next_batch"] = self.next_batch.to_string()
+
+        if self.prev_batch:
+            d["prev_batch"] = self.prev_batch.to_string()
+
+        return d
+
+
+@attr.s(frozen=True, slots=True)
+class RelationPaginationToken(object):
+    """Pagination token for relation pagination API.
+
+    As the results are order by topological ordering, we can use the
+    `topological_ordering` and `stream_ordering` fields of the events at the
+    boundaries of the chunk as pagination tokens.
+
+    Attributes:
+        topological (int): The topological ordering of the boundary event
+        stream (int): The stream ordering of the boundary event.
+    """
+
+    topological = attr.ib()
+    stream = attr.ib()
+
+    @staticmethod
+    def from_string(string):
+        try:
+            t, s = string.split("-")
+            return RelationPaginationToken(int(t), int(s))
+        except ValueError:
+            raise SynapseError(400, "Invalid token")
+
+    def to_string(self):
+        return "%d-%d" % (self.topological, self.stream)
+
+    def as_tuple(self):
+        return attr.astuple(self)
+
+
+@attr.s(frozen=True, slots=True)
+class AggregationPaginationToken(object):
+    """Pagination token for relation aggregation pagination API.
+
+    As the results are order by count and then MAX(stream_ordering) of the
+    aggregation groups, we can just use them as our pagination token.
+
+    Attributes:
+        count (int): The count of relations in the boundar group.
+        stream (int): The MAX stream ordering in the boundary group.
+    """
+
+    count = attr.ib()
+    stream = attr.ib()
+
+    @staticmethod
+    def from_string(string):
+        try:
+            c, s = string.split("-")
+            return AggregationPaginationToken(int(c), int(s))
+        except ValueError:
+            raise SynapseError(400, "Invalid token")
+
+    def to_string(self):
+        return "%d-%d" % (self.count, self.stream)
+
+    def as_tuple(self):
+        return attr.astuple(self)
+
+
+class RelationsWorkerStore(SQLBaseStore):
+    @cached(tree=True)
+    def get_relations_for_event(
+        self,
+        event_id,
+        relation_type=None,
+        event_type=None,
+        aggregation_key=None,
+        limit=5,
+        direction="b",
+        from_token=None,
+        to_token=None,
+    ):
+        """Get a list of relations for an event, ordered by topological ordering.
+
+        Args:
+            event_id (str): Fetch events that relate to this event ID.
+            relation_type (str|None): Only fetch events with this relation
+                type, if given.
+            event_type (str|None): Only fetch events with this event type, if
+                given.
+            aggregation_key (str|None): Only fetch events with this aggregation
+                key, if given.
+            limit (int): Only fetch the most recent `limit` events.
+            direction (str): Whether to fetch the most recent first (`"b"`) or
+                the oldest first (`"f"`).
+            from_token (RelationPaginationToken|None): Fetch rows from the given
+                token, or from the start if None.
+            to_token (RelationPaginationToken|None): Fetch rows up to the given
+                token, or up to the end if None.
+
+        Returns:
+            Deferred[PaginationChunk]: List of event IDs that match relations
+            requested. The rows are of the form `{"event_id": "..."}`.
+        """
+
+        where_clause = ["relates_to_id = ?"]
+        where_args = [event_id]
+
+        if relation_type is not None:
+            where_clause.append("relation_type = ?")
+            where_args.append(relation_type)
+
+        if event_type is not None:
+            where_clause.append("type = ?")
+            where_args.append(event_type)
+
+        if aggregation_key:
+            where_clause.append("aggregation_key = ?")
+            where_args.append(aggregation_key)
+
+        pagination_clause = generate_pagination_where_clause(
+            direction=direction,
+            column_names=("topological_ordering", "stream_ordering"),
+            from_token=attr.astuple(from_token) if from_token else None,
+            to_token=attr.astuple(to_token) if to_token else None,
+            engine=self.database_engine,
+        )
+
+        if pagination_clause:
+            where_clause.append(pagination_clause)
+
+        if direction == "b":
+            order = "DESC"
+        else:
+            order = "ASC"
+
+        sql = """
+            SELECT event_id, topological_ordering, stream_ordering
+            FROM event_relations
+            INNER JOIN events USING (event_id)
+            WHERE %s
+            ORDER BY topological_ordering %s, stream_ordering %s
+            LIMIT ?
+        """ % (
+            " AND ".join(where_clause),
+            order,
+            order,
+        )
+
+        def _get_recent_references_for_event_txn(txn):
+            txn.execute(sql, where_args + [limit + 1])
+
+            last_topo_id = None
+            last_stream_id = None
+            events = []
+            for row in txn:
+                events.append({"event_id": row[0]})
+                last_topo_id = row[1]
+                last_stream_id = row[2]
+
+            next_batch = None
+            if len(events) > limit and last_topo_id and last_stream_id:
+                next_batch = RelationPaginationToken(last_topo_id, last_stream_id)
+
+            return PaginationChunk(
+                chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
+            )
+
+        return self.runInteraction(
+            "get_recent_references_for_event", _get_recent_references_for_event_txn
+        )
+
+    @cached(tree=True)
+    def get_aggregation_groups_for_event(
+        self,
+        event_id,
+        event_type=None,
+        limit=5,
+        direction="b",
+        from_token=None,
+        to_token=None,
+    ):
+        """Get a list of annotations on the event, grouped by event type and
+        aggregation key, sorted by count.
+
+        This is used e.g. to get the what and how many reactions have happend
+        on an event.
+
+        Args:
+            event_id (str): Fetch events that relate to this event ID.
+            event_type (str|None): Only fetch events with this event type, if
+                given.
+            limit (int): Only fetch the `limit` groups.
+            direction (str): Whether to fetch the highest count first (`"b"`) or
+                the lowest count first (`"f"`).
+            from_token (AggregationPaginationToken|None): Fetch rows from the
+                given token, or from the start if None.
+            to_token (AggregationPaginationToken|None): Fetch rows up to the
+                given token, or up to the end if None.
+
+
+        Returns:
+            Deferred[PaginationChunk]: List of groups of annotations that
+            match. Each row is a dict with `type`, `key` and `count` fields.
+        """
+
+        where_clause = ["relates_to_id = ?", "relation_type = ?"]
+        where_args = [event_id, RelationTypes.ANNOTATION]
+
+        if event_type:
+            where_clause.append("type = ?")
+            where_args.append(event_type)
+
+        having_clause = generate_pagination_where_clause(
+            direction=direction,
+            column_names=("COUNT(*)", "MAX(stream_ordering)"),
+            from_token=attr.astuple(from_token) if from_token else None,
+            to_token=attr.astuple(to_token) if to_token else None,
+            engine=self.database_engine,
+        )
+
+        if direction == "b":
+            order = "DESC"
+        else:
+            order = "ASC"
+
+        if having_clause:
+            having_clause = "HAVING " + having_clause
+        else:
+            having_clause = ""
+
+        sql = """
+            SELECT type, aggregation_key, COUNT(DISTINCT sender), MAX(stream_ordering)
+            FROM event_relations
+            INNER JOIN events USING (event_id)
+            WHERE {where_clause}
+            GROUP BY relation_type, type, aggregation_key
+            {having_clause}
+            ORDER BY COUNT(*) {order}, MAX(stream_ordering) {order}
+            LIMIT ?
+        """.format(
+            where_clause=" AND ".join(where_clause),
+            order=order,
+            having_clause=having_clause,
+        )
+
+        def _get_aggregation_groups_for_event_txn(txn):
+            txn.execute(sql, where_args + [limit + 1])
+
+            next_batch = None
+            events = []
+            for row in txn:
+                events.append({"type": row[0], "key": row[1], "count": row[2]})
+                next_batch = AggregationPaginationToken(row[2], row[3])
+
+            if len(events) <= limit:
+                next_batch = None
+
+            return PaginationChunk(
+                chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
+            )
+
+        return self.runInteraction(
+            "get_aggregation_groups_for_event", _get_aggregation_groups_for_event_txn
+        )
+
+    @cachedInlineCallbacks()
+    def get_applicable_edit(self, event_id):
+        """Get the most recent edit (if any) that has happened for the given
+        event.
+
+        Correctly handles checking whether edits were allowed to happen.
+
+        Args:
+            event_id (str): The original event ID
+
+        Returns:
+            Deferred[EventBase|None]: Returns the most recent edit, if any.
+        """
+
+        # We only allow edits for `m.room.message` events that have the same sender
+        # and event type. We can't assert these things during regular event auth so
+        # we have to do the checks post hoc.
+
+        # Fetches latest edit that has the same type and sender as the
+        # original, and is an `m.room.message`.
+        sql = """
+            SELECT edit.event_id FROM events AS edit
+            INNER JOIN event_relations USING (event_id)
+            INNER JOIN events AS original ON
+                original.event_id = relates_to_id
+                AND edit.type = original.type
+                AND edit.sender = original.sender
+            WHERE
+                relates_to_id = ?
+                AND relation_type = ?
+                AND edit.type = 'm.room.message'
+            ORDER by edit.origin_server_ts DESC, edit.event_id DESC
+            LIMIT 1
+        """
+
+        def _get_applicable_edit_txn(txn):
+            txn.execute(sql, (event_id, RelationTypes.REPLACE))
+            row = txn.fetchone()
+            if row:
+                return row[0]
+
+        edit_id = yield self.runInteraction(
+            "get_applicable_edit", _get_applicable_edit_txn
+        )
+
+        if not edit_id:
+            return
+
+        edit_event = yield self.get_event(edit_id, allow_none=True)
+        defer.returnValue(edit_event)
+
+    def has_user_annotated_event(self, parent_id, event_type, aggregation_key, sender):
+        """Check if a user has already annotated an event with the same key
+        (e.g. already liked an event).
+
+        Args:
+            parent_id (str): The event being annotated
+            event_type (str): The event type of the annotation
+            aggregation_key (str): The aggregation key of the annotation
+            sender (str): The sender of the annotation
+
+        Returns:
+            Deferred[bool]
+        """
+
+        sql = """
+            SELECT 1 FROM event_relations
+            INNER JOIN events USING (event_id)
+            WHERE
+                relates_to_id = ?
+                AND relation_type = ?
+                AND type = ?
+                AND sender = ?
+                AND aggregation_key = ?
+            LIMIT 1;
+        """
+
+        def _get_if_user_has_annotated_event(txn):
+            txn.execute(
+                sql,
+                (
+                    parent_id,
+                    RelationTypes.ANNOTATION,
+                    event_type,
+                    sender,
+                    aggregation_key,
+                ),
+            )
+
+            return bool(txn.fetchone())
+
+        return self.runInteraction(
+            "get_if_user_has_annotated_event", _get_if_user_has_annotated_event
+        )
+
+
+class RelationsStore(RelationsWorkerStore):
+    def _handle_event_relations(self, txn, event):
+        """Handles inserting relation data during peristence of events
+
+        Args:
+            txn
+            event (EventBase)
+        """
+        relation = event.content.get("m.relates_to")
+        if not relation:
+            # No relations
+            return
+
+        rel_type = relation.get("rel_type")
+        if rel_type not in (
+            RelationTypes.ANNOTATION,
+            RelationTypes.REFERENCE,
+            RelationTypes.REPLACE,
+        ):
+            # Unknown relation type
+            return
+
+        parent_id = relation.get("event_id")
+        if not parent_id:
+            # Invalid relation
+            return
+
+        aggregation_key = relation.get("key")
+
+        self._simple_insert_txn(
+            txn,
+            table="event_relations",
+            values={
+                "event_id": event.event_id,
+                "relates_to_id": parent_id,
+                "relation_type": rel_type,
+                "aggregation_key": aggregation_key,
+            },
+        )
+
+        txn.call_after(self.get_relations_for_event.invalidate_many, (parent_id,))
+        txn.call_after(
+            self.get_aggregation_groups_for_event.invalidate_many, (parent_id,)
+        )
+
+        if rel_type == RelationTypes.REPLACE:
+            txn.call_after(self.get_applicable_edit.invalidate, (parent_id,))
+
+    def _handle_redaction(self, txn, redacted_event_id):
+        """Handles receiving a redaction and checking whether we need to remove
+        any redacted relations from the database.
+
+        Args:
+            txn
+            redacted_event_id (str): The event that was redacted.
+        """
+
+        self._simple_delete_txn(
+            txn,
+            table="event_relations",
+            keyvalues={
+                "event_id": redacted_event_id,
+            }
+        )
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 57df17bcc2..7617913326 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -142,6 +142,27 @@ class RoomMemberWorkerStore(EventsWorkerStore):
 
         return self.runInteraction("get_room_summary", _get_room_summary_txn)
 
+    def _get_user_counts_in_room_txn(self, txn, room_id):
+        """
+        Get the user count in a room by membership.
+
+        Args:
+            room_id (str)
+            membership (Membership)
+
+        Returns:
+            Deferred[int]
+        """
+        sql = """
+        SELECT m.membership, count(*) FROM room_memberships as m
+            INNER JOIN current_state_events as c USING(event_id)
+            WHERE c.type = 'm.room.member' AND c.room_id = ?
+            GROUP BY m.membership
+        """
+
+        txn.execute(sql, (room_id,))
+        return {row[0]: row[1] for row in txn}
+
     @cached()
     def get_invited_rooms_for_user(self, user_id):
         """ Get all the rooms the user is invited to
diff --git a/synapse/storage/schema/delta/13/v13.sql b/synapse/storage/schema/delta/13/v13.sql
index 5eb93b38b2..f8649e5d99 100644
--- a/synapse/storage/schema/delta/13/v13.sql
+++ b/synapse/storage/schema/delta/13/v13.sql
@@ -13,19 +13,7 @@
  * limitations under the License.
  */
 
-CREATE TABLE IF NOT EXISTS application_services(
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    url TEXT,
-    token TEXT,
-    hs_token TEXT,
-    sender TEXT,
-    UNIQUE(token)
-);
-
-CREATE TABLE IF NOT EXISTS application_services_regex(
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    as_id BIGINT UNSIGNED NOT NULL,
-    namespace INTEGER,  /* enum[room_id|room_alias|user_id] */
-    regex TEXT,
-    FOREIGN KEY(as_id) REFERENCES application_services(id)
-);
+/* We used to create a tables called application_services and
+ * application_services_regex, but these are no longer used and are removed in
+ * delta 54.
+ */
diff --git a/synapse/storage/schema/delta/14/upgrade_appservice_db.py b/synapse/storage/schema/delta/14/upgrade_appservice_db.py
deleted file mode 100644
index 4d725b92fe..0000000000
--- a/synapse/storage/schema/delta/14/upgrade_appservice_db.py
+++ /dev/null
@@ -1,42 +0,0 @@
-# Copyright 2015, 2016 OpenMarket Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import logging
-
-import simplejson as json
-
-logger = logging.getLogger(__name__)
-
-
-def run_create(cur, *args, **kwargs):
-    cur.execute("SELECT id, regex FROM application_services_regex")
-    for row in cur.fetchall():
-        try:
-            logger.debug("Checking %s..." % row[0])
-            json.loads(row[1])
-        except ValueError:
-            # row isn't in json, make it so.
-            string_regex = row[1]
-            new_regex = json.dumps({
-                "regex": string_regex,
-                "exclusive": True
-            })
-            cur.execute(
-                "UPDATE application_services_regex SET regex=? WHERE id=?",
-                (new_regex, row[0])
-            )
-
-
-def run_upgrade(*args, **kwargs):
-    pass
diff --git a/synapse/storage/schema/delta/16/unique_constraints.sql b/synapse/storage/schema/delta/16/unique_constraints.sql
index fecf11118c..5b8de52c33 100644
--- a/synapse/storage/schema/delta/16/unique_constraints.sql
+++ b/synapse/storage/schema/delta/16/unique_constraints.sql
@@ -17,14 +17,6 @@ DELETE FROM room_memberships WHERE rowid not in (
 DROP INDEX IF EXISTS room_memberships_event_id;
 CREATE UNIQUE INDEX room_memberships_event_id ON room_memberships(event_id);
 
---
-DELETE FROM feedback WHERE rowid not in (
-    SELECT MIN(rowid) FROM feedback GROUP BY event_id
-);
-
-DROP INDEX IF EXISTS feedback_event_id;
-CREATE UNIQUE INDEX feedback_event_id ON feedback(event_id);
-
 --
 DELETE FROM topics WHERE rowid not in (
     SELECT MIN(rowid) FROM topics GROUP BY event_id
diff --git a/synapse/storage/schema/delta/24/stats_reporting.sql b/synapse/storage/schema/delta/24/stats_reporting.sql
index 5f508af7a9..acea7483bd 100644
--- a/synapse/storage/schema/delta/24/stats_reporting.sql
+++ b/synapse/storage/schema/delta/24/stats_reporting.sql
@@ -1,4 +1,4 @@
-/* Copyright 2015, 2016 OpenMarket Ltd
+/* Copyright 2019 New Vector Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,10 +13,6 @@
  * limitations under the License.
  */
 
--- Should only ever contain one row
-CREATE TABLE IF NOT EXISTS stats_reporting(
-  -- The stream ordering token which was most recently reported as stats
-  reported_stream_token INTEGER,
-  -- The time (seconds since epoch) stats were most recently reported
-  reported_time BIGINT
-);
+ /* We used to create a table called stats_reporting, but this is no longer
+ * used and is removed in delta 54.
+ */
\ No newline at end of file
diff --git a/synapse/storage/schema/delta/30/state_stream.sql b/synapse/storage/schema/delta/30/state_stream.sql
index 706fe1dcf4..e85699e82e 100644
--- a/synapse/storage/schema/delta/30/state_stream.sql
+++ b/synapse/storage/schema/delta/30/state_stream.sql
@@ -14,15 +14,10 @@
  */
 
 
-/**
- * The positions in the event stream_ordering when the current_state was
- * replaced by the state at the event.
+/* We used to create a table called current_state_resets, but this is no
+ * longer used and is removed in delta 54.
  */
 
-CREATE TABLE IF NOT EXISTS current_state_resets(
-    event_stream_ordering BIGINT PRIMARY KEY NOT NULL
-);
-
 /* The outlier events that have aquired a state group typically through
  * backfill. This is tracked separately to the events table, as assigning a
  * state group change the position of the existing event in the stream
diff --git a/synapse/storage/schema/delta/32/remove_indices.sql b/synapse/storage/schema/delta/32/remove_indices.sql
index f859be46a6..4219cdd06a 100644
--- a/synapse/storage/schema/delta/32/remove_indices.sql
+++ b/synapse/storage/schema/delta/32/remove_indices.sql
@@ -24,13 +24,9 @@ DROP INDEX IF EXISTS state_groups_id; -- Duplicate of PRIMARY KEY
 DROP INDEX IF EXISTS event_to_state_groups_id; -- Duplicate of PRIMARY KEY
 DROP INDEX IF EXISTS event_push_actions_room_id_event_id_user_id_profile_tag; -- Duplicate of UNIQUE CONSTRAINT
 
-DROP INDEX IF EXISTS event_destinations_id; -- Prefix of UNIQUE CONSTRAINT
 DROP INDEX IF EXISTS st_extrem_id; -- Prefix of UNIQUE CONSTRAINT
-DROP INDEX IF EXISTS event_content_hashes_id; -- Prefix of UNIQUE CONSTRAINT
 DROP INDEX IF EXISTS event_signatures_id; -- Prefix of UNIQUE CONSTRAINT
-DROP INDEX IF EXISTS event_edge_hashes_id; -- Prefix of UNIQUE CONSTRAINT
 DROP INDEX IF EXISTS redactions_event_id; -- Duplicate of UNIQUE CONSTRAINT
-DROP INDEX IF EXISTS room_hosts_room_id; -- Prefix of UNIQUE CONSTRAINT
 
 -- The following indices were unused
 DROP INDEX IF EXISTS remote_media_cache_thumbnails_media_id;
diff --git a/synapse/storage/schema/delta/54/account_validity_with_renewal.sql b/synapse/storage/schema/delta/54/account_validity_with_renewal.sql
new file mode 100644
index 0000000000..0adb2ad55e
--- /dev/null
+++ b/synapse/storage/schema/delta/54/account_validity_with_renewal.sql
@@ -0,0 +1,30 @@
+/* Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- We previously changed the schema for this table without renaming the file, which means
+-- that some databases might still be using the old schema. This ensures Synapse uses the
+-- right schema for the table.
+DROP TABLE IF EXISTS account_validity;
+
+-- Track what users are in public rooms.
+CREATE TABLE IF NOT EXISTS account_validity (
+    user_id TEXT PRIMARY KEY,
+    expiration_ts_ms BIGINT NOT NULL,
+    email_sent BOOLEAN NOT NULL,
+    renewal_token TEXT
+);
+
+CREATE INDEX account_validity_email_sent_idx ON account_validity(email_sent, expiration_ts_ms)
+CREATE UNIQUE INDEX account_validity_renewal_string_idx ON account_validity(renewal_token)
diff --git a/synapse/storage/schema/full_schemas/11/room_aliases.sql b/synapse/storage/schema/delta/54/add_validity_to_server_keys.sql
similarity index 58%
rename from synapse/storage/schema/full_schemas/11/room_aliases.sql
rename to synapse/storage/schema/delta/54/add_validity_to_server_keys.sql
index 71a91f8ec9..c01aa9d2d9 100644
--- a/synapse/storage/schema/full_schemas/11/room_aliases.sql
+++ b/synapse/storage/schema/delta/54/add_validity_to_server_keys.sql
@@ -1,4 +1,4 @@
-/* Copyright 2014-2016 OpenMarket Ltd
+/* Copyright 2019 New Vector Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,12 +13,11 @@
  * limitations under the License.
  */
 
-CREATE TABLE IF NOT EXISTS room_aliases(
-    room_alias TEXT NOT NULL,
-    room_id TEXT NOT NULL
-);
+/* When we can use this key until, before we have to refresh it. */
+ALTER TABLE server_signature_keys ADD COLUMN ts_valid_until_ms BIGINT;
 
-CREATE TABLE IF NOT EXISTS room_alias_servers(
-    room_alias TEXT NOT NULL,
-    server TEXT NOT NULL
+UPDATE server_signature_keys SET ts_valid_until_ms = (
+    SELECT MAX(ts_valid_until_ms) FROM server_keys_json skj WHERE
+        skj.server_name = server_signature_keys.server_name AND
+        skj.key_id = server_signature_keys.key_id
 );
diff --git a/synapse/storage/schema/delta/54/delete_forward_extremities.sql b/synapse/storage/schema/delta/54/delete_forward_extremities.sql
new file mode 100644
index 0000000000..b062ec840c
--- /dev/null
+++ b/synapse/storage/schema/delta/54/delete_forward_extremities.sql
@@ -0,0 +1,23 @@
+/* Copyright 2019 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- Start a background job to cleanup extremities that were incorrectly added
+-- by bug #5269.
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('delete_soft_failed_extremities', '{}');
+
+DROP TABLE IF EXISTS _extremities_to_check;  -- To make this delta schema file idempotent.
+CREATE TABLE _extremities_to_check AS SELECT event_id FROM event_forward_extremities;
+CREATE INDEX _extremities_to_check_id ON _extremities_to_check(event_id);
diff --git a/synapse/storage/schema/delta/54/drop_legacy_tables.sql b/synapse/storage/schema/delta/54/drop_legacy_tables.sql
new file mode 100644
index 0000000000..dbbe682697
--- /dev/null
+++ b/synapse/storage/schema/delta/54/drop_legacy_tables.sql
@@ -0,0 +1,30 @@
+/* Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- we need to do this first due to foreign constraints
+DROP TABLE IF EXISTS application_services_regex;
+
+DROP TABLE IF EXISTS application_services;
+DROP TABLE IF EXISTS transaction_id_to_pdu;
+DROP TABLE IF EXISTS stats_reporting;
+DROP TABLE IF EXISTS current_state_resets;
+DROP TABLE IF EXISTS event_content_hashes;
+DROP TABLE IF EXISTS event_destinations;
+DROP TABLE IF EXISTS event_edge_hashes;
+DROP TABLE IF EXISTS event_signatures;
+DROP TABLE IF EXISTS feedback;
+DROP TABLE IF EXISTS room_hosts;
+DROP TABLE IF EXISTS server_tls_certificates;
+DROP TABLE IF EXISTS state_forward_extremities;
diff --git a/synapse/storage/schema/delta/54/relations.sql b/synapse/storage/schema/delta/54/relations.sql
new file mode 100644
index 0000000000..134862b870
--- /dev/null
+++ b/synapse/storage/schema/delta/54/relations.sql
@@ -0,0 +1,27 @@
+/* Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- Tracks related events, like reactions, replies, edits, etc. Note that things
+-- in this table are not necessarily "valid", e.g. it may contain edits from
+-- people who don't have power to edit other peoples events.
+CREATE TABLE IF NOT EXISTS event_relations (
+    event_id TEXT NOT NULL,
+    relates_to_id TEXT NOT NULL,
+    relation_type TEXT NOT NULL,
+    aggregation_key TEXT
+);
+
+CREATE UNIQUE INDEX event_relations_id ON event_relations(event_id);
+CREATE INDEX event_relations_relates ON event_relations(relates_to_id, relation_type, aggregation_key);
diff --git a/synapse/storage/schema/delta/54/stats.sql b/synapse/storage/schema/delta/54/stats.sql
new file mode 100644
index 0000000000..652e58308e
--- /dev/null
+++ b/synapse/storage/schema/delta/54/stats.sql
@@ -0,0 +1,80 @@
+/* Copyright 2018 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+CREATE TABLE stats_stream_pos (
+    Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE,  -- Makes sure this table only has one row.
+    stream_id BIGINT,
+    CHECK (Lock='X')
+);
+
+INSERT INTO stats_stream_pos (stream_id) VALUES (null);
+
+CREATE TABLE user_stats (
+    user_id TEXT NOT NULL,
+    ts BIGINT NOT NULL,
+    bucket_size INT NOT NULL,
+    public_rooms INT NOT NULL,
+    private_rooms INT NOT NULL
+);
+
+CREATE UNIQUE INDEX user_stats_user_ts ON user_stats(user_id, ts);
+
+CREATE TABLE room_stats (
+    room_id TEXT NOT NULL,
+    ts BIGINT NOT NULL,
+    bucket_size INT NOT NULL,
+    current_state_events INT NOT NULL,
+    joined_members INT NOT NULL,
+    invited_members INT NOT NULL,
+    left_members INT NOT NULL,
+    banned_members INT NOT NULL,
+    state_events INT NOT NULL
+);
+
+CREATE UNIQUE INDEX room_stats_room_ts ON room_stats(room_id, ts);
+
+-- cache of current room state; useful for the publicRooms list
+CREATE TABLE room_state (
+    room_id TEXT NOT NULL,
+    join_rules TEXT,
+    history_visibility TEXT,
+    encryption TEXT,
+    name TEXT,
+    topic TEXT,
+    avatar TEXT,
+    canonical_alias TEXT
+    -- get aliases straight from the right table
+);
+
+CREATE UNIQUE INDEX room_state_room ON room_state(room_id);
+
+CREATE TABLE room_stats_earliest_token (
+    room_id TEXT NOT NULL,
+    token BIGINT NOT NULL
+);
+
+CREATE UNIQUE INDEX room_stats_earliest_token_idx ON room_stats_earliest_token(room_id);
+
+-- Set up staging tables
+INSERT INTO background_updates (update_name, progress_json) VALUES
+    ('populate_stats_createtables', '{}');
+
+-- Run through each room and update stats
+INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES
+    ('populate_stats_process_rooms', '{}', 'populate_stats_createtables');
+
+-- Clean up staging tables
+INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES
+    ('populate_stats_cleanup', '{}', 'populate_stats_process_rooms');
diff --git a/synapse/storage/schema/delta/54/stats2.sql b/synapse/storage/schema/delta/54/stats2.sql
new file mode 100644
index 0000000000..3b2d48447f
--- /dev/null
+++ b/synapse/storage/schema/delta/54/stats2.sql
@@ -0,0 +1,28 @@
+/* Copyright 2019 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- This delta file gets run after `54/stats.sql` delta.
+
+-- We want to add some indices to the temporary stats table, so we re-insert
+-- 'populate_stats_createtables' if we are still processing the rooms update.
+INSERT INTO background_updates (update_name, progress_json)
+    SELECT 'populate_stats_createtables', '{}'
+    WHERE
+        'populate_stats_process_rooms' IN (
+            SELECT update_name FROM background_updates
+        )
+        AND 'populate_stats_createtables' NOT IN (  -- don't insert if already exists
+            SELECT update_name FROM background_updates
+        );
diff --git a/synapse/storage/schema/delta/55/track_threepid_validations.sql b/synapse/storage/schema/delta/55/track_threepid_validations.sql
new file mode 100644
index 0000000000..a8eced2e0a
--- /dev/null
+++ b/synapse/storage/schema/delta/55/track_threepid_validations.sql
@@ -0,0 +1,31 @@
+/* Copyright 2019 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+CREATE TABLE IF NOT EXISTS threepid_validation_session (
+    session_id TEXT PRIMARY KEY,
+    medium TEXT NOT NULL,
+    address TEXT NOT NULL,
+    client_secret TEXT NOT NULL,
+    last_send_attempt BIGINT NOT NULL,
+    validated_at BIGINT
+);
+
+CREATE TABLE IF NOT EXISTS threepid_validation_token (
+    token TEXT PRIMARY KEY,
+    session_id TEXT NOT NULL,
+    next_link TEXT,
+    expires BIGINT NOT NULL
+);
+
+CREATE INDEX threepid_validation_token_session_id ON threepid_validation_token(session_id);
diff --git a/synapse/storage/schema/full_schemas/11/profiles.sql b/synapse/storage/schema/delta/55/users_alter_deactivated.sql
similarity index 71%
rename from synapse/storage/schema/full_schemas/11/profiles.sql
rename to synapse/storage/schema/delta/55/users_alter_deactivated.sql
index b314e6df75..dabdde489b 100644
--- a/synapse/storage/schema/full_schemas/11/profiles.sql
+++ b/synapse/storage/schema/delta/55/users_alter_deactivated.sql
@@ -1,4 +1,4 @@
-/* Copyright 2014-2016 OpenMarket Ltd
+/* Copyright 2019 The Matrix.org Foundation C.I.C.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,8 +12,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-CREATE TABLE IF NOT EXISTS profiles(
-    user_id TEXT NOT NULL,
-    displayname TEXT,
-    avatar_url TEXT
-);
+
+ALTER TABLE users ADD deactivated SMALLINT DEFAULT 0 NOT NULL;
+
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('users_set_deactivated_flag', '{}');
diff --git a/synapse/storage/schema/full_schemas/11/event_edges.sql b/synapse/storage/schema/full_schemas/11/event_edges.sql
deleted file mode 100644
index bccd1c6f74..0000000000
--- a/synapse/storage/schema/full_schemas/11/event_edges.sql
+++ /dev/null
@@ -1,91 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-CREATE TABLE IF NOT EXISTS event_forward_extremities(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    UNIQUE (event_id, room_id)
-);
-
-CREATE INDEX ev_extrem_room ON event_forward_extremities(room_id);
-CREATE INDEX ev_extrem_id ON event_forward_extremities(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_backward_extremities(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    UNIQUE (event_id, room_id)
-);
-
-CREATE INDEX ev_b_extrem_room ON event_backward_extremities(room_id);
-CREATE INDEX ev_b_extrem_id ON event_backward_extremities(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_edges(
-    event_id TEXT NOT NULL,
-    prev_event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    -- We no longer insert prev_state into this table, so all new rows will have
-    -- is_state as false.
-    is_state BOOL NOT NULL,
-    UNIQUE (event_id, prev_event_id, room_id, is_state)
-);
-
-CREATE INDEX ev_edges_id ON event_edges(event_id);
-CREATE INDEX ev_edges_prev_id ON event_edges(prev_event_id);
-
-
-CREATE TABLE IF NOT EXISTS room_depth(
-    room_id TEXT NOT NULL,
-    min_depth INTEGER NOT NULL,
-    UNIQUE (room_id)
-);
-
-CREATE INDEX room_depth_room ON room_depth(room_id);
-
-
-create TABLE IF NOT EXISTS event_destinations(
-    event_id TEXT NOT NULL,
-    destination TEXT NOT NULL,
-    delivered_ts BIGINT DEFAULT 0, -- or 0 if not delivered
-    UNIQUE (event_id, destination)
-);
-
-CREATE INDEX event_destinations_id ON event_destinations(event_id);
-
-
-CREATE TABLE IF NOT EXISTS state_forward_extremities(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    state_key TEXT NOT NULL,
-    UNIQUE (event_id, room_id)
-);
-
-CREATE INDEX st_extrem_keys ON state_forward_extremities(
-    room_id, type, state_key
-);
-CREATE INDEX st_extrem_id ON state_forward_extremities(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_auth(
-    event_id TEXT NOT NULL,
-    auth_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    UNIQUE (event_id, auth_id, room_id)
-);
-
-CREATE INDEX evauth_edges_id ON event_auth(event_id);
-CREATE INDEX evauth_edges_auth_id ON event_auth(auth_id);
diff --git a/synapse/storage/schema/full_schemas/11/event_signatures.sql b/synapse/storage/schema/full_schemas/11/event_signatures.sql
deleted file mode 100644
index 00ce85980e..0000000000
--- a/synapse/storage/schema/full_schemas/11/event_signatures.sql
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-CREATE TABLE IF NOT EXISTS event_content_hashes (
-    event_id TEXT,
-    algorithm TEXT,
-    hash bytea,
-    UNIQUE (event_id, algorithm)
-);
-
-CREATE INDEX event_content_hashes_id ON event_content_hashes(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_reference_hashes (
-    event_id TEXT,
-    algorithm TEXT,
-    hash bytea,
-    UNIQUE (event_id, algorithm)
-);
-
-CREATE INDEX event_reference_hashes_id ON event_reference_hashes(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_signatures (
-    event_id TEXT,
-    signature_name TEXT,
-    key_id TEXT,
-    signature bytea,
-    UNIQUE (event_id, signature_name, key_id)
-);
-
-CREATE INDEX event_signatures_id ON event_signatures(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_edge_hashes(
-    event_id TEXT,
-    prev_event_id TEXT,
-    algorithm TEXT,
-    hash bytea,
-    UNIQUE (event_id, prev_event_id, algorithm)
-);
-
-CREATE INDEX event_edge_hashes_id ON event_edge_hashes(event_id);
diff --git a/synapse/storage/schema/full_schemas/11/im.sql b/synapse/storage/schema/full_schemas/11/im.sql
deleted file mode 100644
index dfbbf9fd54..0000000000
--- a/synapse/storage/schema/full_schemas/11/im.sql
+++ /dev/null
@@ -1,123 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-CREATE TABLE IF NOT EXISTS events(
-    stream_ordering INTEGER PRIMARY KEY AUTOINCREMENT,
-    topological_ordering BIGINT NOT NULL,
-    event_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    content TEXT NOT NULL,
-    unrecognized_keys TEXT,
-    processed BOOL NOT NULL,
-    outlier BOOL NOT NULL,
-    depth BIGINT DEFAULT 0 NOT NULL,
-    UNIQUE (event_id)
-);
-
-CREATE INDEX events_stream_ordering ON events (stream_ordering);
-CREATE INDEX events_topological_ordering ON events (topological_ordering);
-CREATE INDEX events_room_id ON events (room_id);
-
-
-CREATE TABLE IF NOT EXISTS event_json(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    internal_metadata TEXT NOT NULL,
-    json TEXT NOT NULL,
-    UNIQUE (event_id)
-);
-
-CREATE INDEX event_json_room_id ON event_json(room_id);
-
-
-CREATE TABLE IF NOT EXISTS state_events(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    state_key TEXT NOT NULL,
-    prev_state TEXT,
-    UNIQUE (event_id)
-);
-
-CREATE INDEX state_events_room_id ON state_events (room_id);
-CREATE INDEX state_events_type ON state_events (type);
-CREATE INDEX state_events_state_key ON state_events (state_key);
-
-
-CREATE TABLE IF NOT EXISTS current_state_events(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    state_key TEXT NOT NULL,
-    UNIQUE (room_id, type, state_key)
-);
-
-CREATE INDEX curr_events_event_id ON current_state_events (event_id);
-CREATE INDEX current_state_events_room_id ON current_state_events (room_id);
-CREATE INDEX current_state_events_type ON current_state_events (type);
-CREATE INDEX current_state_events_state_key ON current_state_events (state_key);
-
-CREATE TABLE IF NOT EXISTS room_memberships(
-    event_id TEXT NOT NULL,
-    user_id TEXT NOT NULL,
-    sender TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    membership TEXT NOT NULL
-);
-
-CREATE INDEX room_memberships_event_id ON room_memberships (event_id);
-CREATE INDEX room_memberships_room_id ON room_memberships (room_id);
-CREATE INDEX room_memberships_user_id ON room_memberships (user_id);
-
-CREATE TABLE IF NOT EXISTS feedback(
-    event_id TEXT NOT NULL,
-    feedback_type TEXT,
-    target_event_id TEXT,
-    sender TEXT,
-    room_id TEXT
-);
-
-CREATE TABLE IF NOT EXISTS topics(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    topic TEXT NOT NULL
-);
-
-CREATE INDEX topics_event_id ON topics(event_id);
-CREATE INDEX topics_room_id ON topics(room_id);
-
-CREATE TABLE IF NOT EXISTS room_names(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    name TEXT NOT NULL
-);
-
-CREATE INDEX room_names_event_id ON room_names(event_id);
-CREATE INDEX room_names_room_id ON room_names(room_id);
-
-CREATE TABLE IF NOT EXISTS rooms(
-    room_id TEXT PRIMARY KEY NOT NULL,
-    is_public BOOL,
-    creator TEXT
-);
-
-CREATE TABLE IF NOT EXISTS room_hosts(
-    room_id TEXT NOT NULL,
-    host TEXT NOT NULL,
-    UNIQUE (room_id, host)
-);
-
-CREATE INDEX room_hosts_room_id ON room_hosts (room_id);
diff --git a/synapse/storage/schema/full_schemas/11/keys.sql b/synapse/storage/schema/full_schemas/11/keys.sql
deleted file mode 100644
index ca0ca1b694..0000000000
--- a/synapse/storage/schema/full_schemas/11/keys.sql
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-CREATE TABLE IF NOT EXISTS server_tls_certificates(
-  server_name TEXT, -- Server name.
-  fingerprint TEXT, -- Certificate fingerprint.
-  from_server TEXT, -- Which key server the certificate was fetched from.
-  ts_added_ms BIGINT, -- When the certifcate was added.
-  tls_certificate bytea, -- DER encoded x509 certificate.
-  UNIQUE (server_name, fingerprint)
-);
-
-CREATE TABLE IF NOT EXISTS server_signature_keys(
-  server_name TEXT, -- Server name.
-  key_id TEXT, -- Key version.
-  from_server TEXT, -- Which key server the key was fetched form.
-  ts_added_ms BIGINT, -- When the key was added.
-  verify_key bytea, -- NACL verification key.
-  UNIQUE (server_name, key_id)
-);
diff --git a/synapse/storage/schema/full_schemas/11/media_repository.sql b/synapse/storage/schema/full_schemas/11/media_repository.sql
deleted file mode 100644
index 9c264d6ece..0000000000
--- a/synapse/storage/schema/full_schemas/11/media_repository.sql
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-CREATE TABLE IF NOT EXISTS local_media_repository (
-    media_id TEXT, -- The id used to refer to the media.
-    media_type TEXT, -- The MIME-type of the media.
-    media_length INTEGER, -- Length of the media in bytes.
-    created_ts BIGINT, -- When the content was uploaded in ms.
-    upload_name TEXT, -- The name the media was uploaded with.
-    user_id TEXT, -- The user who uploaded the file.
-    UNIQUE (media_id)
-);
-
-CREATE TABLE IF NOT EXISTS local_media_repository_thumbnails (
-    media_id TEXT, -- The id used to refer to the media.
-    thumbnail_width INTEGER, -- The width of the thumbnail in pixels.
-    thumbnail_height INTEGER, -- The height of the thumbnail in pixels.
-    thumbnail_type TEXT, -- The MIME-type of the thumbnail.
-    thumbnail_method TEXT, -- The method used to make the thumbnail.
-    thumbnail_length INTEGER, -- The length of the thumbnail in bytes.
-    UNIQUE (
-        media_id, thumbnail_width, thumbnail_height, thumbnail_type
-    )
-);
-
-CREATE INDEX local_media_repository_thumbnails_media_id
-    ON local_media_repository_thumbnails (media_id);
-
-CREATE TABLE IF NOT EXISTS remote_media_cache (
-    media_origin TEXT, -- The remote HS the media came from.
-    media_id TEXT, -- The id used to refer to the media on that server.
-    media_type TEXT, -- The MIME-type of the media.
-    created_ts BIGINT, -- When the content was uploaded in ms.
-    upload_name TEXT, -- The name the media was uploaded with.
-    media_length INTEGER, -- Length of the media in bytes.
-    filesystem_id TEXT, -- The name used to store the media on disk.
-    UNIQUE (media_origin, media_id)
-);
-
-CREATE TABLE IF NOT EXISTS remote_media_cache_thumbnails (
-    media_origin TEXT, -- The remote HS the media came from.
-    media_id TEXT, -- The id used to refer to the media.
-    thumbnail_width INTEGER, -- The width of the thumbnail in pixels.
-    thumbnail_height INTEGER, -- The height of the thumbnail in pixels.
-    thumbnail_method TEXT, -- The method used to make the thumbnail
-    thumbnail_type TEXT, -- The MIME-type of the thumbnail.
-    thumbnail_length INTEGER, -- The length of the thumbnail in bytes.
-    filesystem_id TEXT, -- The name used to store the media on disk.
-    UNIQUE (
-        media_origin, media_id, thumbnail_width, thumbnail_height,
-        thumbnail_type
-     )
-);
diff --git a/synapse/storage/schema/full_schemas/11/presence.sql b/synapse/storage/schema/full_schemas/11/presence.sql
deleted file mode 100644
index 492725994c..0000000000
--- a/synapse/storage/schema/full_schemas/11/presence.sql
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-CREATE TABLE IF NOT EXISTS presence(
-  user_id TEXT NOT NULL,
-  state VARCHAR(20),
-  status_msg TEXT,
-  mtime BIGINT -- miliseconds since last state change
-);
-
--- For each of /my/ users which possibly-remote users are allowed to see their
--- presence state
-CREATE TABLE IF NOT EXISTS presence_allow_inbound(
-  observed_user_id TEXT NOT NULL,
-  observer_user_id TEXT NOT NULL -- a UserID,
-);
-
--- For each of /my/ users (watcher), which possibly-remote users are they
--- watching?
-CREATE TABLE IF NOT EXISTS presence_list(
-  user_id TEXT NOT NULL,
-  observed_user_id TEXT NOT NULL, -- a UserID,
-  accepted BOOLEAN NOT NULL
-);
diff --git a/synapse/storage/schema/full_schemas/11/redactions.sql b/synapse/storage/schema/full_schemas/11/redactions.sql
deleted file mode 100644
index 318f0d9aa5..0000000000
--- a/synapse/storage/schema/full_schemas/11/redactions.sql
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-CREATE TABLE IF NOT EXISTS redactions (
-    event_id TEXT NOT NULL,
-    redacts TEXT NOT NULL,
-    UNIQUE (event_id)
-);
-
-CREATE INDEX redactions_event_id ON redactions (event_id);
-CREATE INDEX redactions_redacts ON redactions (redacts);
diff --git a/synapse/storage/schema/full_schemas/11/state.sql b/synapse/storage/schema/full_schemas/11/state.sql
deleted file mode 100644
index b901e0f017..0000000000
--- a/synapse/storage/schema/full_schemas/11/state.sql
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-CREATE TABLE IF NOT EXISTS state_groups(
-    id INTEGER PRIMARY KEY,
-    room_id TEXT NOT NULL,
-    event_id TEXT NOT NULL
-);
-
-CREATE TABLE IF NOT EXISTS state_groups_state(
-    state_group INTEGER NOT NULL,
-    room_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    state_key TEXT NOT NULL,
-    event_id TEXT NOT NULL
-);
-
-CREATE TABLE IF NOT EXISTS event_to_state_groups(
-    event_id TEXT NOT NULL,
-    state_group INTEGER NOT NULL,
-    UNIQUE (event_id)
-);
-
-CREATE INDEX state_groups_id ON state_groups(id);
-
-CREATE INDEX state_groups_state_id ON state_groups_state(state_group);
-CREATE INDEX state_groups_state_tuple ON state_groups_state(room_id, type, state_key);
-CREATE INDEX event_to_state_groups_id ON event_to_state_groups(event_id);
diff --git a/synapse/storage/schema/full_schemas/11/transactions.sql b/synapse/storage/schema/full_schemas/11/transactions.sql
deleted file mode 100644
index f6a058832e..0000000000
--- a/synapse/storage/schema/full_schemas/11/transactions.sql
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
--- Stores what transaction ids we have received and what our response was
-CREATE TABLE IF NOT EXISTS received_transactions(
-    transaction_id TEXT,
-    origin TEXT,
-    ts BIGINT,
-    response_code INTEGER,
-    response_json bytea,
-    has_been_referenced SMALLINT DEFAULT 0, -- Whether thishas been referenced by a prev_tx
-    UNIQUE (transaction_id, origin)
-);
-
-CREATE INDEX transactions_have_ref ON received_transactions(origin, has_been_referenced);-- WHERE has_been_referenced = 0;
-
--- For sent transactions only.
-CREATE TABLE IF NOT EXISTS transaction_id_to_pdu(
-    transaction_id INTEGER,
-    destination TEXT,
-    pdu_id TEXT,
-    pdu_origin TEXT
-);
-
-CREATE INDEX transaction_id_to_pdu_tx ON transaction_id_to_pdu(transaction_id, destination);
-CREATE INDEX transaction_id_to_pdu_dest ON transaction_id_to_pdu(destination);
-
--- To track destination health
-CREATE TABLE IF NOT EXISTS destinations(
-    destination TEXT PRIMARY KEY,
-    retry_last_ts BIGINT,
-    retry_interval INTEGER
-);
diff --git a/synapse/storage/schema/full_schemas/11/users.sql b/synapse/storage/schema/full_schemas/11/users.sql
deleted file mode 100644
index 6c1d4c34a1..0000000000
--- a/synapse/storage/schema/full_schemas/11/users.sql
+++ /dev/null
@@ -1,43 +0,0 @@
-/* Copyright 2014-2016 OpenMarket Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-CREATE TABLE IF NOT EXISTS users(
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    name TEXT,
-    password_hash TEXT,
-    creation_ts BIGINT,
-    admin SMALLINT DEFAULT 0 NOT NULL,
-    UNIQUE(name)
-);
-
-CREATE TABLE IF NOT EXISTS access_tokens(
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id TEXT NOT NULL,
-    device_id TEXT,
-    token TEXT NOT NULL,
-    last_used BIGINT,
-    UNIQUE(token)
-);
-
-CREATE TABLE IF NOT EXISTS user_ips (
-    user TEXT NOT NULL,
-    access_token TEXT NOT NULL,
-    device_id TEXT,
-    ip TEXT NOT NULL,
-    user_agent TEXT NOT NULL,
-    last_seen BIGINT NOT NULL,
-    UNIQUE (user, access_token, ip, user_agent)
-);
-
-CREATE INDEX user_ips_user ON user_ips(user);
diff --git a/synapse/storage/schema/full_schemas/16/application_services.sql b/synapse/storage/schema/full_schemas/16/application_services.sql
index aee0e68473..883fcd10b2 100644
--- a/synapse/storage/schema/full_schemas/16/application_services.sql
+++ b/synapse/storage/schema/full_schemas/16/application_services.sql
@@ -13,22 +13,11 @@
  * limitations under the License.
  */
 
-CREATE TABLE IF NOT EXISTS application_services(
-    id BIGINT PRIMARY KEY,
-    url TEXT,
-    token TEXT,
-    hs_token TEXT,
-    sender TEXT,
-    UNIQUE(token)
-);
+/* We used to create tables called application_services and
+ * application_services_regex, but these are no longer used and are removed in
+ * delta 54.
+ */
 
-CREATE TABLE IF NOT EXISTS application_services_regex(
-    id BIGINT PRIMARY KEY,
-    as_id BIGINT NOT NULL,
-    namespace INTEGER,  /* enum[room_id|room_alias|user_id] */
-    regex TEXT,
-    FOREIGN KEY(as_id) REFERENCES application_services(id)
-);
 
 CREATE TABLE IF NOT EXISTS application_services_state(
     as_id TEXT PRIMARY KEY,
diff --git a/synapse/storage/schema/full_schemas/16/event_edges.sql b/synapse/storage/schema/full_schemas/16/event_edges.sql
index 6b5a5a88fa..10ce2aa7a0 100644
--- a/synapse/storage/schema/full_schemas/16/event_edges.sql
+++ b/synapse/storage/schema/full_schemas/16/event_edges.sql
@@ -13,6 +13,11 @@
  * limitations under the License.
  */
 
+/* We used to create tables called event_destinations and
+ * state_forward_extremities, but these are no longer used and are removed in
+ * delta 54.
+ */
+
 CREATE TABLE IF NOT EXISTS event_forward_extremities(
     event_id TEXT NOT NULL,
     room_id TEXT NOT NULL,
@@ -54,31 +59,6 @@ CREATE TABLE IF NOT EXISTS room_depth(
 
 CREATE INDEX room_depth_room ON room_depth(room_id);
 
-
-create TABLE IF NOT EXISTS event_destinations(
-    event_id TEXT NOT NULL,
-    destination TEXT NOT NULL,
-    delivered_ts BIGINT DEFAULT 0, -- or 0 if not delivered
-    UNIQUE (event_id, destination)
-);
-
-CREATE INDEX event_destinations_id ON event_destinations(event_id);
-
-
-CREATE TABLE IF NOT EXISTS state_forward_extremities(
-    event_id TEXT NOT NULL,
-    room_id TEXT NOT NULL,
-    type TEXT NOT NULL,
-    state_key TEXT NOT NULL,
-    UNIQUE (event_id, room_id)
-);
-
-CREATE INDEX st_extrem_keys ON state_forward_extremities(
-    room_id, type, state_key
-);
-CREATE INDEX st_extrem_id ON state_forward_extremities(event_id);
-
-
 CREATE TABLE IF NOT EXISTS event_auth(
     event_id TEXT NOT NULL,
     auth_id TEXT NOT NULL,
diff --git a/synapse/storage/schema/full_schemas/16/event_signatures.sql b/synapse/storage/schema/full_schemas/16/event_signatures.sql
index 00ce85980e..95826da431 100644
--- a/synapse/storage/schema/full_schemas/16/event_signatures.sql
+++ b/synapse/storage/schema/full_schemas/16/event_signatures.sql
@@ -13,15 +13,9 @@
  * limitations under the License.
  */
 
-CREATE TABLE IF NOT EXISTS event_content_hashes (
-    event_id TEXT,
-    algorithm TEXT,
-    hash bytea,
-    UNIQUE (event_id, algorithm)
-);
-
-CREATE INDEX event_content_hashes_id ON event_content_hashes(event_id);
-
+ /* We used to create tables called event_content_hashes and event_edge_hashes,
+  * but these are no longer used and are removed in delta 54.
+  */
 
 CREATE TABLE IF NOT EXISTS event_reference_hashes (
     event_id TEXT,
@@ -42,14 +36,3 @@ CREATE TABLE IF NOT EXISTS event_signatures (
 );
 
 CREATE INDEX event_signatures_id ON event_signatures(event_id);
-
-
-CREATE TABLE IF NOT EXISTS event_edge_hashes(
-    event_id TEXT,
-    prev_event_id TEXT,
-    algorithm TEXT,
-    hash bytea,
-    UNIQUE (event_id, prev_event_id, algorithm)
-);
-
-CREATE INDEX event_edge_hashes_id ON event_edge_hashes(event_id);
diff --git a/synapse/storage/schema/full_schemas/16/im.sql b/synapse/storage/schema/full_schemas/16/im.sql
index 5f5cb8d01d..a1a2aa8e5b 100644
--- a/synapse/storage/schema/full_schemas/16/im.sql
+++ b/synapse/storage/schema/full_schemas/16/im.sql
@@ -13,6 +13,10 @@
  * limitations under the License.
  */
 
+/* We used to create tables called room_hosts and feedback,
+ * but these are no longer used and are removed in delta 54.
+ */
+
 CREATE TABLE IF NOT EXISTS events(
     stream_ordering INTEGER PRIMARY KEY,
     topological_ordering BIGINT NOT NULL,
@@ -91,15 +95,6 @@ CREATE TABLE IF NOT EXISTS room_memberships(
 CREATE INDEX room_memberships_room_id ON room_memberships (room_id);
 CREATE INDEX room_memberships_user_id ON room_memberships (user_id);
 
-CREATE TABLE IF NOT EXISTS feedback(
-    event_id TEXT NOT NULL,
-    feedback_type TEXT,
-    target_event_id TEXT,
-    sender TEXT,
-    room_id TEXT,
-    UNIQUE (event_id)
-);
-
 CREATE TABLE IF NOT EXISTS topics(
     event_id TEXT NOT NULL,
     room_id TEXT NOT NULL,
@@ -123,11 +118,3 @@ CREATE TABLE IF NOT EXISTS rooms(
     is_public BOOL,
     creator TEXT
 );
-
-CREATE TABLE IF NOT EXISTS room_hosts(
-    room_id TEXT NOT NULL,
-    host TEXT NOT NULL,
-    UNIQUE (room_id, host)
-);
-
-CREATE INDEX room_hosts_room_id ON room_hosts (room_id);
diff --git a/synapse/storage/schema/full_schemas/16/keys.sql b/synapse/storage/schema/full_schemas/16/keys.sql
index ca0ca1b694..11cdffdbb3 100644
--- a/synapse/storage/schema/full_schemas/16/keys.sql
+++ b/synapse/storage/schema/full_schemas/16/keys.sql
@@ -12,14 +12,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-CREATE TABLE IF NOT EXISTS server_tls_certificates(
-  server_name TEXT, -- Server name.
-  fingerprint TEXT, -- Certificate fingerprint.
-  from_server TEXT, -- Which key server the certificate was fetched from.
-  ts_added_ms BIGINT, -- When the certifcate was added.
-  tls_certificate bytea, -- DER encoded x509 certificate.
-  UNIQUE (server_name, fingerprint)
-);
+
+-- we used to create a table called server_tls_certificates, but this is no
+-- longer used, and is removed in delta 54.
 
 CREATE TABLE IF NOT EXISTS server_signature_keys(
   server_name TEXT, -- Server name.
diff --git a/synapse/storage/schema/full_schemas/16/presence.sql b/synapse/storage/schema/full_schemas/16/presence.sql
index 0892c4cf96..01d2d8f833 100644
--- a/synapse/storage/schema/full_schemas/16/presence.sql
+++ b/synapse/storage/schema/full_schemas/16/presence.sql
@@ -28,5 +28,5 @@ CREATE TABLE IF NOT EXISTS presence_allow_inbound(
   UNIQUE (observed_user_id, observer_user_id)
 );
 
--- We used to create a table called presence_list, but this is no longer used 
+-- We used to create a table called presence_list, but this is no longer used
 -- and is removed in delta 54.
\ No newline at end of file
diff --git a/synapse/storage/schema/full_schemas/54/full.sql.postgres b/synapse/storage/schema/full_schemas/54/full.sql.postgres
new file mode 100644
index 0000000000..098434356f
--- /dev/null
+++ b/synapse/storage/schema/full_schemas/54/full.sql.postgres
@@ -0,0 +1,2052 @@
+
+
+
+
+
+CREATE TABLE access_tokens (
+    id bigint NOT NULL,
+    user_id text NOT NULL,
+    device_id text,
+    token text NOT NULL,
+    last_used bigint
+);
+
+
+
+CREATE TABLE account_data (
+    user_id text NOT NULL,
+    account_data_type text NOT NULL,
+    stream_id bigint NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE account_data_max_stream_id (
+    lock character(1) DEFAULT 'X'::bpchar NOT NULL,
+    stream_id bigint NOT NULL,
+    CONSTRAINT private_user_data_max_stream_id_lock_check CHECK ((lock = 'X'::bpchar))
+);
+
+
+
+CREATE TABLE account_validity (
+    user_id text NOT NULL,
+    expiration_ts_ms bigint NOT NULL,
+    email_sent boolean NOT NULL,
+    renewal_token text
+);
+
+
+
+CREATE TABLE application_services_state (
+    as_id text NOT NULL,
+    state character varying(5),
+    last_txn integer
+);
+
+
+
+CREATE TABLE application_services_txns (
+    as_id text NOT NULL,
+    txn_id integer NOT NULL,
+    event_ids text NOT NULL
+);
+
+
+
+CREATE TABLE appservice_room_list (
+    appservice_id text NOT NULL,
+    network_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+CREATE TABLE appservice_stream_position (
+    lock character(1) DEFAULT 'X'::bpchar NOT NULL,
+    stream_ordering bigint,
+    CONSTRAINT appservice_stream_position_lock_check CHECK ((lock = 'X'::bpchar))
+);
+
+
+
+CREATE TABLE background_updates (
+    update_name text NOT NULL,
+    progress_json text NOT NULL,
+    depends_on text
+);
+
+
+
+CREATE TABLE blocked_rooms (
+    room_id text NOT NULL,
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE cache_invalidation_stream (
+    stream_id bigint,
+    cache_func text,
+    keys text[],
+    invalidation_ts bigint
+);
+
+
+
+CREATE TABLE current_state_delta_stream (
+    stream_id bigint NOT NULL,
+    room_id text NOT NULL,
+    type text NOT NULL,
+    state_key text NOT NULL,
+    event_id text,
+    prev_event_id text
+);
+
+
+
+CREATE TABLE current_state_events (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    type text NOT NULL,
+    state_key text NOT NULL
+);
+
+
+
+CREATE TABLE deleted_pushers (
+    stream_id bigint NOT NULL,
+    app_id text NOT NULL,
+    pushkey text NOT NULL,
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE destinations (
+    destination text NOT NULL,
+    retry_last_ts bigint,
+    retry_interval integer
+);
+
+
+
+CREATE TABLE device_federation_inbox (
+    origin text NOT NULL,
+    message_id text NOT NULL,
+    received_ts bigint NOT NULL
+);
+
+
+
+CREATE TABLE device_federation_outbox (
+    destination text NOT NULL,
+    stream_id bigint NOT NULL,
+    queued_ts bigint NOT NULL,
+    messages_json text NOT NULL
+);
+
+
+
+CREATE TABLE device_inbox (
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    stream_id bigint NOT NULL,
+    message_json text NOT NULL
+);
+
+
+
+CREATE TABLE device_lists_outbound_last_success (
+    destination text NOT NULL,
+    user_id text NOT NULL,
+    stream_id bigint NOT NULL
+);
+
+
+
+CREATE TABLE device_lists_outbound_pokes (
+    destination text NOT NULL,
+    stream_id bigint NOT NULL,
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    sent boolean NOT NULL,
+    ts bigint NOT NULL
+);
+
+
+
+CREATE TABLE device_lists_remote_cache (
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE device_lists_remote_extremeties (
+    user_id text NOT NULL,
+    stream_id text NOT NULL
+);
+
+
+
+CREATE TABLE device_lists_stream (
+    stream_id bigint NOT NULL,
+    user_id text NOT NULL,
+    device_id text NOT NULL
+);
+
+
+
+CREATE TABLE device_max_stream_id (
+    stream_id bigint NOT NULL
+);
+
+
+
+CREATE TABLE devices (
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    display_name text
+);
+
+
+
+CREATE TABLE e2e_device_keys_json (
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    ts_added_ms bigint NOT NULL,
+    key_json text NOT NULL
+);
+
+
+
+CREATE TABLE e2e_one_time_keys_json (
+    user_id text NOT NULL,
+    device_id text NOT NULL,
+    algorithm text NOT NULL,
+    key_id text NOT NULL,
+    ts_added_ms bigint NOT NULL,
+    key_json text NOT NULL
+);
+
+
+
+CREATE TABLE e2e_room_keys (
+    user_id text NOT NULL,
+    room_id text NOT NULL,
+    session_id text NOT NULL,
+    version bigint NOT NULL,
+    first_message_index integer,
+    forwarded_count integer,
+    is_verified boolean,
+    session_data text NOT NULL
+);
+
+
+
+CREATE TABLE e2e_room_keys_versions (
+    user_id text NOT NULL,
+    version bigint NOT NULL,
+    algorithm text NOT NULL,
+    auth_data text NOT NULL,
+    deleted smallint DEFAULT 0 NOT NULL
+);
+
+
+
+CREATE TABLE erased_users (
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE event_auth (
+    event_id text NOT NULL,
+    auth_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+CREATE TABLE event_backward_extremities (
+    event_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+CREATE TABLE event_edges (
+    event_id text NOT NULL,
+    prev_event_id text NOT NULL,
+    room_id text NOT NULL,
+    is_state boolean NOT NULL
+);
+
+
+
+CREATE TABLE event_forward_extremities (
+    event_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+CREATE TABLE event_json (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    internal_metadata text NOT NULL,
+    json text NOT NULL,
+    format_version integer
+);
+
+
+
+CREATE TABLE event_push_actions (
+    room_id text NOT NULL,
+    event_id text NOT NULL,
+    user_id text NOT NULL,
+    profile_tag character varying(32),
+    actions text NOT NULL,
+    topological_ordering bigint,
+    stream_ordering bigint,
+    notif smallint,
+    highlight smallint
+);
+
+
+
+CREATE TABLE event_push_actions_staging (
+    event_id text NOT NULL,
+    user_id text NOT NULL,
+    actions text NOT NULL,
+    notif smallint NOT NULL,
+    highlight smallint NOT NULL
+);
+
+
+
+CREATE TABLE event_push_summary (
+    user_id text NOT NULL,
+    room_id text NOT NULL,
+    notif_count bigint NOT NULL,
+    stream_ordering bigint NOT NULL
+);
+
+
+
+CREATE TABLE event_push_summary_stream_ordering (
+    lock character(1) DEFAULT 'X'::bpchar NOT NULL,
+    stream_ordering bigint NOT NULL,
+    CONSTRAINT event_push_summary_stream_ordering_lock_check CHECK ((lock = 'X'::bpchar))
+);
+
+
+
+CREATE TABLE event_reference_hashes (
+    event_id text,
+    algorithm text,
+    hash bytea
+);
+
+
+
+CREATE TABLE event_relations (
+    event_id text NOT NULL,
+    relates_to_id text NOT NULL,
+    relation_type text NOT NULL,
+    aggregation_key text
+);
+
+
+
+CREATE TABLE event_reports (
+    id bigint NOT NULL,
+    received_ts bigint NOT NULL,
+    room_id text NOT NULL,
+    event_id text NOT NULL,
+    user_id text NOT NULL,
+    reason text,
+    content text
+);
+
+
+
+CREATE TABLE event_search (
+    event_id text,
+    room_id text,
+    sender text,
+    key text,
+    vector tsvector,
+    origin_server_ts bigint,
+    stream_ordering bigint
+);
+
+
+
+CREATE TABLE event_to_state_groups (
+    event_id text NOT NULL,
+    state_group bigint NOT NULL
+);
+
+
+
+CREATE TABLE events (
+    stream_ordering integer NOT NULL,
+    topological_ordering bigint NOT NULL,
+    event_id text NOT NULL,
+    type text NOT NULL,
+    room_id text NOT NULL,
+    content text,
+    unrecognized_keys text,
+    processed boolean NOT NULL,
+    outlier boolean NOT NULL,
+    depth bigint DEFAULT 0 NOT NULL,
+    origin_server_ts bigint,
+    received_ts bigint,
+    sender text,
+    contains_url boolean
+);
+
+
+
+CREATE TABLE ex_outlier_stream (
+    event_stream_ordering bigint NOT NULL,
+    event_id text NOT NULL,
+    state_group bigint NOT NULL
+);
+
+
+
+CREATE TABLE federation_stream_position (
+    type text NOT NULL,
+    stream_id integer NOT NULL
+);
+
+
+
+CREATE TABLE group_attestations_remote (
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    valid_until_ms bigint NOT NULL,
+    attestation_json text NOT NULL
+);
+
+
+
+CREATE TABLE group_attestations_renewals (
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    valid_until_ms bigint NOT NULL
+);
+
+
+
+CREATE TABLE group_invites (
+    group_id text NOT NULL,
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE group_roles (
+    group_id text NOT NULL,
+    role_id text NOT NULL,
+    profile text NOT NULL,
+    is_public boolean NOT NULL
+);
+
+
+
+CREATE TABLE group_room_categories (
+    group_id text NOT NULL,
+    category_id text NOT NULL,
+    profile text NOT NULL,
+    is_public boolean NOT NULL
+);
+
+
+
+CREATE TABLE group_rooms (
+    group_id text NOT NULL,
+    room_id text NOT NULL,
+    is_public boolean NOT NULL
+);
+
+
+
+CREATE TABLE group_summary_roles (
+    group_id text NOT NULL,
+    role_id text NOT NULL,
+    role_order bigint NOT NULL,
+    CONSTRAINT group_summary_roles_role_order_check CHECK ((role_order > 0))
+);
+
+
+
+CREATE TABLE group_summary_room_categories (
+    group_id text NOT NULL,
+    category_id text NOT NULL,
+    cat_order bigint NOT NULL,
+    CONSTRAINT group_summary_room_categories_cat_order_check CHECK ((cat_order > 0))
+);
+
+
+
+CREATE TABLE group_summary_rooms (
+    group_id text NOT NULL,
+    room_id text NOT NULL,
+    category_id text NOT NULL,
+    room_order bigint NOT NULL,
+    is_public boolean NOT NULL,
+    CONSTRAINT group_summary_rooms_room_order_check CHECK ((room_order > 0))
+);
+
+
+
+CREATE TABLE group_summary_users (
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    role_id text NOT NULL,
+    user_order bigint NOT NULL,
+    is_public boolean NOT NULL
+);
+
+
+
+CREATE TABLE group_users (
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    is_admin boolean NOT NULL,
+    is_public boolean NOT NULL
+);
+
+
+
+CREATE TABLE groups (
+    group_id text NOT NULL,
+    name text,
+    avatar_url text,
+    short_description text,
+    long_description text,
+    is_public boolean NOT NULL,
+    join_policy text DEFAULT 'invite'::text NOT NULL
+);
+
+
+
+CREATE TABLE guest_access (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    guest_access text NOT NULL
+);
+
+
+
+CREATE TABLE history_visibility (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    history_visibility text NOT NULL
+);
+
+
+
+CREATE TABLE local_group_membership (
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    is_admin boolean NOT NULL,
+    membership text NOT NULL,
+    is_publicised boolean NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE local_group_updates (
+    stream_id bigint NOT NULL,
+    group_id text NOT NULL,
+    user_id text NOT NULL,
+    type text NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE local_invites (
+    stream_id bigint NOT NULL,
+    inviter text NOT NULL,
+    invitee text NOT NULL,
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    locally_rejected text,
+    replaced_by text
+);
+
+
+
+CREATE TABLE local_media_repository (
+    media_id text,
+    media_type text,
+    media_length integer,
+    created_ts bigint,
+    upload_name text,
+    user_id text,
+    quarantined_by text,
+    url_cache text,
+    last_access_ts bigint
+);
+
+
+
+CREATE TABLE local_media_repository_thumbnails (
+    media_id text,
+    thumbnail_width integer,
+    thumbnail_height integer,
+    thumbnail_type text,
+    thumbnail_method text,
+    thumbnail_length integer
+);
+
+
+
+CREATE TABLE local_media_repository_url_cache (
+    url text,
+    response_code integer,
+    etag text,
+    expires_ts bigint,
+    og text,
+    media_id text,
+    download_ts bigint
+);
+
+
+
+CREATE TABLE monthly_active_users (
+    user_id text NOT NULL,
+    "timestamp" bigint NOT NULL
+);
+
+
+
+CREATE TABLE open_id_tokens (
+    token text NOT NULL,
+    ts_valid_until_ms bigint NOT NULL,
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE presence (
+    user_id text NOT NULL,
+    state character varying(20),
+    status_msg text,
+    mtime bigint
+);
+
+
+
+CREATE TABLE presence_allow_inbound (
+    observed_user_id text NOT NULL,
+    observer_user_id text NOT NULL
+);
+
+
+
+CREATE TABLE presence_stream (
+    stream_id bigint,
+    user_id text,
+    state text,
+    last_active_ts bigint,
+    last_federation_update_ts bigint,
+    last_user_sync_ts bigint,
+    status_msg text,
+    currently_active boolean
+);
+
+
+
+CREATE TABLE profiles (
+    user_id text NOT NULL,
+    displayname text,
+    avatar_url text
+);
+
+
+
+CREATE TABLE public_room_list_stream (
+    stream_id bigint NOT NULL,
+    room_id text NOT NULL,
+    visibility boolean NOT NULL,
+    appservice_id text,
+    network_id text
+);
+
+
+
+CREATE TABLE push_rules (
+    id bigint NOT NULL,
+    user_name text NOT NULL,
+    rule_id text NOT NULL,
+    priority_class smallint NOT NULL,
+    priority integer DEFAULT 0 NOT NULL,
+    conditions text NOT NULL,
+    actions text NOT NULL
+);
+
+
+
+CREATE TABLE push_rules_enable (
+    id bigint NOT NULL,
+    user_name text NOT NULL,
+    rule_id text NOT NULL,
+    enabled smallint
+);
+
+
+
+CREATE TABLE push_rules_stream (
+    stream_id bigint NOT NULL,
+    event_stream_ordering bigint NOT NULL,
+    user_id text NOT NULL,
+    rule_id text NOT NULL,
+    op text NOT NULL,
+    priority_class smallint,
+    priority integer,
+    conditions text,
+    actions text
+);
+
+
+
+CREATE TABLE pusher_throttle (
+    pusher bigint NOT NULL,
+    room_id text NOT NULL,
+    last_sent_ts bigint,
+    throttle_ms bigint
+);
+
+
+
+CREATE TABLE pushers (
+    id bigint NOT NULL,
+    user_name text NOT NULL,
+    access_token bigint,
+    profile_tag text NOT NULL,
+    kind text NOT NULL,
+    app_id text NOT NULL,
+    app_display_name text NOT NULL,
+    device_display_name text NOT NULL,
+    pushkey text NOT NULL,
+    ts bigint NOT NULL,
+    lang text,
+    data text,
+    last_stream_ordering integer,
+    last_success bigint,
+    failing_since bigint
+);
+
+
+
+CREATE TABLE ratelimit_override (
+    user_id text NOT NULL,
+    messages_per_second bigint,
+    burst_count bigint
+);
+
+
+
+CREATE TABLE receipts_graph (
+    room_id text NOT NULL,
+    receipt_type text NOT NULL,
+    user_id text NOT NULL,
+    event_ids text NOT NULL,
+    data text NOT NULL
+);
+
+
+
+CREATE TABLE receipts_linearized (
+    stream_id bigint NOT NULL,
+    room_id text NOT NULL,
+    receipt_type text NOT NULL,
+    user_id text NOT NULL,
+    event_id text NOT NULL,
+    data text NOT NULL
+);
+
+
+
+CREATE TABLE received_transactions (
+    transaction_id text,
+    origin text,
+    ts bigint,
+    response_code integer,
+    response_json bytea,
+    has_been_referenced smallint DEFAULT 0
+);
+
+
+
+CREATE TABLE redactions (
+    event_id text NOT NULL,
+    redacts text NOT NULL
+);
+
+
+
+CREATE TABLE rejections (
+    event_id text NOT NULL,
+    reason text NOT NULL,
+    last_check text NOT NULL
+);
+
+
+
+CREATE TABLE remote_media_cache (
+    media_origin text,
+    media_id text,
+    media_type text,
+    created_ts bigint,
+    upload_name text,
+    media_length integer,
+    filesystem_id text,
+    last_access_ts bigint,
+    quarantined_by text
+);
+
+
+
+CREATE TABLE remote_media_cache_thumbnails (
+    media_origin text,
+    media_id text,
+    thumbnail_width integer,
+    thumbnail_height integer,
+    thumbnail_method text,
+    thumbnail_type text,
+    thumbnail_length integer,
+    filesystem_id text
+);
+
+
+
+CREATE TABLE remote_profile_cache (
+    user_id text NOT NULL,
+    displayname text,
+    avatar_url text,
+    last_check bigint NOT NULL
+);
+
+
+
+CREATE TABLE room_account_data (
+    user_id text NOT NULL,
+    room_id text NOT NULL,
+    account_data_type text NOT NULL,
+    stream_id bigint NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE room_alias_servers (
+    room_alias text NOT NULL,
+    server text NOT NULL
+);
+
+
+
+CREATE TABLE room_aliases (
+    room_alias text NOT NULL,
+    room_id text NOT NULL,
+    creator text
+);
+
+
+
+CREATE TABLE room_depth (
+    room_id text NOT NULL,
+    min_depth integer NOT NULL
+);
+
+
+
+CREATE TABLE room_memberships (
+    event_id text NOT NULL,
+    user_id text NOT NULL,
+    sender text NOT NULL,
+    room_id text NOT NULL,
+    membership text NOT NULL,
+    forgotten integer DEFAULT 0,
+    display_name text,
+    avatar_url text
+);
+
+
+
+CREATE TABLE room_names (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    name text NOT NULL
+);
+
+
+
+CREATE TABLE room_state (
+    room_id text NOT NULL,
+    join_rules text,
+    history_visibility text,
+    encryption text,
+    name text,
+    topic text,
+    avatar text,
+    canonical_alias text
+);
+
+
+
+CREATE TABLE room_stats (
+    room_id text NOT NULL,
+    ts bigint NOT NULL,
+    bucket_size integer NOT NULL,
+    current_state_events integer NOT NULL,
+    joined_members integer NOT NULL,
+    invited_members integer NOT NULL,
+    left_members integer NOT NULL,
+    banned_members integer NOT NULL,
+    state_events integer NOT NULL
+);
+
+
+
+CREATE TABLE room_stats_earliest_token (
+    room_id text NOT NULL,
+    token bigint NOT NULL
+);
+
+
+
+CREATE TABLE room_tags (
+    user_id text NOT NULL,
+    room_id text NOT NULL,
+    tag text NOT NULL,
+    content text NOT NULL
+);
+
+
+
+CREATE TABLE room_tags_revisions (
+    user_id text NOT NULL,
+    room_id text NOT NULL,
+    stream_id bigint NOT NULL
+);
+
+
+
+CREATE TABLE rooms (
+    room_id text NOT NULL,
+    is_public boolean,
+    creator text
+);
+
+
+
+CREATE TABLE server_keys_json (
+    server_name text NOT NULL,
+    key_id text NOT NULL,
+    from_server text NOT NULL,
+    ts_added_ms bigint NOT NULL,
+    ts_valid_until_ms bigint NOT NULL,
+    key_json bytea NOT NULL
+);
+
+
+
+CREATE TABLE server_signature_keys (
+    server_name text,
+    key_id text,
+    from_server text,
+    ts_added_ms bigint,
+    verify_key bytea,
+    ts_valid_until_ms bigint
+);
+
+
+
+CREATE TABLE state_events (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    type text NOT NULL,
+    state_key text NOT NULL,
+    prev_state text
+);
+
+
+
+CREATE TABLE state_group_edges (
+    state_group bigint NOT NULL,
+    prev_state_group bigint NOT NULL
+);
+
+
+
+CREATE SEQUENCE state_group_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+
+CREATE TABLE state_groups (
+    id bigint NOT NULL,
+    room_id text NOT NULL,
+    event_id text NOT NULL
+);
+
+
+
+CREATE TABLE state_groups_state (
+    state_group bigint NOT NULL,
+    room_id text NOT NULL,
+    type text NOT NULL,
+    state_key text NOT NULL,
+    event_id text NOT NULL
+);
+
+
+
+CREATE TABLE stats_stream_pos (
+    lock character(1) DEFAULT 'X'::bpchar NOT NULL,
+    stream_id bigint,
+    CONSTRAINT stats_stream_pos_lock_check CHECK ((lock = 'X'::bpchar))
+);
+
+
+
+CREATE TABLE stream_ordering_to_exterm (
+    stream_ordering bigint NOT NULL,
+    room_id text NOT NULL,
+    event_id text NOT NULL
+);
+
+
+
+CREATE TABLE threepid_guest_access_tokens (
+    medium text,
+    address text,
+    guest_access_token text,
+    first_inviter text
+);
+
+
+
+CREATE TABLE topics (
+    event_id text NOT NULL,
+    room_id text NOT NULL,
+    topic text NOT NULL
+);
+
+
+
+CREATE TABLE user_daily_visits (
+    user_id text NOT NULL,
+    device_id text,
+    "timestamp" bigint NOT NULL
+);
+
+
+
+CREATE TABLE user_directory (
+    user_id text NOT NULL,
+    room_id text,
+    display_name text,
+    avatar_url text
+);
+
+
+
+CREATE TABLE user_directory_search (
+    user_id text NOT NULL,
+    vector tsvector
+);
+
+
+
+CREATE TABLE user_directory_stream_pos (
+    lock character(1) DEFAULT 'X'::bpchar NOT NULL,
+    stream_id bigint,
+    CONSTRAINT user_directory_stream_pos_lock_check CHECK ((lock = 'X'::bpchar))
+);
+
+
+
+CREATE TABLE user_filters (
+    user_id text,
+    filter_id bigint,
+    filter_json bytea
+);
+
+
+
+CREATE TABLE user_ips (
+    user_id text NOT NULL,
+    access_token text NOT NULL,
+    device_id text,
+    ip text NOT NULL,
+    user_agent text NOT NULL,
+    last_seen bigint NOT NULL
+);
+
+
+
+CREATE TABLE user_stats (
+    user_id text NOT NULL,
+    ts bigint NOT NULL,
+    bucket_size integer NOT NULL,
+    public_rooms integer NOT NULL,
+    private_rooms integer NOT NULL
+);
+
+
+
+CREATE TABLE user_threepid_id_server (
+    user_id text NOT NULL,
+    medium text NOT NULL,
+    address text NOT NULL,
+    id_server text NOT NULL
+);
+
+
+
+CREATE TABLE user_threepids (
+    user_id text NOT NULL,
+    medium text NOT NULL,
+    address text NOT NULL,
+    validated_at bigint NOT NULL,
+    added_at bigint NOT NULL
+);
+
+
+
+CREATE TABLE users (
+    name text,
+    password_hash text,
+    creation_ts bigint,
+    admin smallint DEFAULT 0 NOT NULL,
+    upgrade_ts bigint,
+    is_guest smallint DEFAULT 0 NOT NULL,
+    appservice_id text,
+    consent_version text,
+    consent_server_notice_sent text,
+    user_type text
+);
+
+
+
+CREATE TABLE users_in_public_rooms (
+    user_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+CREATE TABLE users_pending_deactivation (
+    user_id text NOT NULL
+);
+
+
+
+CREATE TABLE users_who_share_private_rooms (
+    user_id text NOT NULL,
+    other_user_id text NOT NULL,
+    room_id text NOT NULL
+);
+
+
+
+ALTER TABLE ONLY access_tokens
+    ADD CONSTRAINT access_tokens_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY access_tokens
+    ADD CONSTRAINT access_tokens_token_key UNIQUE (token);
+
+
+
+ALTER TABLE ONLY account_data
+    ADD CONSTRAINT account_data_uniqueness UNIQUE (user_id, account_data_type);
+
+
+
+ALTER TABLE ONLY account_validity
+    ADD CONSTRAINT account_validity_pkey PRIMARY KEY (user_id);
+
+
+
+ALTER TABLE ONLY application_services_state
+    ADD CONSTRAINT application_services_state_pkey PRIMARY KEY (as_id);
+
+
+
+ALTER TABLE ONLY application_services_txns
+    ADD CONSTRAINT application_services_txns_as_id_txn_id_key UNIQUE (as_id, txn_id);
+
+
+
+ALTER TABLE ONLY appservice_stream_position
+    ADD CONSTRAINT appservice_stream_position_lock_key UNIQUE (lock);
+
+
+
+ALTER TABLE ONLY background_updates
+    ADD CONSTRAINT background_updates_uniqueness UNIQUE (update_name);
+
+
+
+ALTER TABLE ONLY current_state_events
+    ADD CONSTRAINT current_state_events_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY current_state_events
+    ADD CONSTRAINT current_state_events_room_id_type_state_key_key UNIQUE (room_id, type, state_key);
+
+
+
+ALTER TABLE ONLY destinations
+    ADD CONSTRAINT destinations_pkey PRIMARY KEY (destination);
+
+
+
+ALTER TABLE ONLY devices
+    ADD CONSTRAINT device_uniqueness UNIQUE (user_id, device_id);
+
+
+
+ALTER TABLE ONLY e2e_device_keys_json
+    ADD CONSTRAINT e2e_device_keys_json_uniqueness UNIQUE (user_id, device_id);
+
+
+
+ALTER TABLE ONLY e2e_one_time_keys_json
+    ADD CONSTRAINT e2e_one_time_keys_json_uniqueness UNIQUE (user_id, device_id, algorithm, key_id);
+
+
+
+ALTER TABLE ONLY event_backward_extremities
+    ADD CONSTRAINT event_backward_extremities_event_id_room_id_key UNIQUE (event_id, room_id);
+
+
+
+ALTER TABLE ONLY event_edges
+    ADD CONSTRAINT event_edges_event_id_prev_event_id_room_id_is_state_key UNIQUE (event_id, prev_event_id, room_id, is_state);
+
+
+
+ALTER TABLE ONLY event_forward_extremities
+    ADD CONSTRAINT event_forward_extremities_event_id_room_id_key UNIQUE (event_id, room_id);
+
+
+
+ALTER TABLE ONLY event_push_actions
+    ADD CONSTRAINT event_id_user_id_profile_tag_uniqueness UNIQUE (room_id, event_id, user_id, profile_tag);
+
+
+
+ALTER TABLE ONLY event_json
+    ADD CONSTRAINT event_json_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY event_push_summary_stream_ordering
+    ADD CONSTRAINT event_push_summary_stream_ordering_lock_key UNIQUE (lock);
+
+
+
+ALTER TABLE ONLY event_reference_hashes
+    ADD CONSTRAINT event_reference_hashes_event_id_algorithm_key UNIQUE (event_id, algorithm);
+
+
+
+ALTER TABLE ONLY event_reports
+    ADD CONSTRAINT event_reports_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY event_to_state_groups
+    ADD CONSTRAINT event_to_state_groups_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY events
+    ADD CONSTRAINT events_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY events
+    ADD CONSTRAINT events_pkey PRIMARY KEY (stream_ordering);
+
+
+
+ALTER TABLE ONLY ex_outlier_stream
+    ADD CONSTRAINT ex_outlier_stream_pkey PRIMARY KEY (event_stream_ordering);
+
+
+
+ALTER TABLE ONLY group_roles
+    ADD CONSTRAINT group_roles_group_id_role_id_key UNIQUE (group_id, role_id);
+
+
+
+ALTER TABLE ONLY group_room_categories
+    ADD CONSTRAINT group_room_categories_group_id_category_id_key UNIQUE (group_id, category_id);
+
+
+
+ALTER TABLE ONLY group_summary_roles
+    ADD CONSTRAINT group_summary_roles_group_id_role_id_role_order_key UNIQUE (group_id, role_id, role_order);
+
+
+
+ALTER TABLE ONLY group_summary_room_categories
+    ADD CONSTRAINT group_summary_room_categories_group_id_category_id_cat_orde_key UNIQUE (group_id, category_id, cat_order);
+
+
+
+ALTER TABLE ONLY group_summary_rooms
+    ADD CONSTRAINT group_summary_rooms_group_id_category_id_room_id_room_order_key UNIQUE (group_id, category_id, room_id, room_order);
+
+
+
+ALTER TABLE ONLY guest_access
+    ADD CONSTRAINT guest_access_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY history_visibility
+    ADD CONSTRAINT history_visibility_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY local_media_repository
+    ADD CONSTRAINT local_media_repository_media_id_key UNIQUE (media_id);
+
+
+
+ALTER TABLE ONLY local_media_repository_thumbnails
+    ADD CONSTRAINT local_media_repository_thumbn_media_id_thumbnail_width_thum_key UNIQUE (media_id, thumbnail_width, thumbnail_height, thumbnail_type);
+
+
+
+ALTER TABLE ONLY user_threepids
+    ADD CONSTRAINT medium_address UNIQUE (medium, address);
+
+
+
+ALTER TABLE ONLY open_id_tokens
+    ADD CONSTRAINT open_id_tokens_pkey PRIMARY KEY (token);
+
+
+
+ALTER TABLE ONLY presence_allow_inbound
+    ADD CONSTRAINT presence_allow_inbound_observed_user_id_observer_user_id_key UNIQUE (observed_user_id, observer_user_id);
+
+
+
+ALTER TABLE ONLY presence
+    ADD CONSTRAINT presence_user_id_key UNIQUE (user_id);
+
+
+
+ALTER TABLE ONLY account_data_max_stream_id
+    ADD CONSTRAINT private_user_data_max_stream_id_lock_key UNIQUE (lock);
+
+
+
+ALTER TABLE ONLY profiles
+    ADD CONSTRAINT profiles_user_id_key UNIQUE (user_id);
+
+
+
+ALTER TABLE ONLY push_rules_enable
+    ADD CONSTRAINT push_rules_enable_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY push_rules_enable
+    ADD CONSTRAINT push_rules_enable_user_name_rule_id_key UNIQUE (user_name, rule_id);
+
+
+
+ALTER TABLE ONLY push_rules
+    ADD CONSTRAINT push_rules_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY push_rules
+    ADD CONSTRAINT push_rules_user_name_rule_id_key UNIQUE (user_name, rule_id);
+
+
+
+ALTER TABLE ONLY pusher_throttle
+    ADD CONSTRAINT pusher_throttle_pkey PRIMARY KEY (pusher, room_id);
+
+
+
+ALTER TABLE ONLY pushers
+    ADD CONSTRAINT pushers2_app_id_pushkey_user_name_key UNIQUE (app_id, pushkey, user_name);
+
+
+
+ALTER TABLE ONLY pushers
+    ADD CONSTRAINT pushers2_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY receipts_graph
+    ADD CONSTRAINT receipts_graph_uniqueness UNIQUE (room_id, receipt_type, user_id);
+
+
+
+ALTER TABLE ONLY receipts_linearized
+    ADD CONSTRAINT receipts_linearized_uniqueness UNIQUE (room_id, receipt_type, user_id);
+
+
+
+ALTER TABLE ONLY received_transactions
+    ADD CONSTRAINT received_transactions_transaction_id_origin_key UNIQUE (transaction_id, origin);
+
+
+
+ALTER TABLE ONLY redactions
+    ADD CONSTRAINT redactions_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY rejections
+    ADD CONSTRAINT rejections_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY remote_media_cache
+    ADD CONSTRAINT remote_media_cache_media_origin_media_id_key UNIQUE (media_origin, media_id);
+
+
+
+ALTER TABLE ONLY remote_media_cache_thumbnails
+    ADD CONSTRAINT remote_media_cache_thumbnails_media_origin_media_id_thumbna_key UNIQUE (media_origin, media_id, thumbnail_width, thumbnail_height, thumbnail_type);
+
+
+
+ALTER TABLE ONLY room_account_data
+    ADD CONSTRAINT room_account_data_uniqueness UNIQUE (user_id, room_id, account_data_type);
+
+
+
+ALTER TABLE ONLY room_aliases
+    ADD CONSTRAINT room_aliases_room_alias_key UNIQUE (room_alias);
+
+
+
+ALTER TABLE ONLY room_depth
+    ADD CONSTRAINT room_depth_room_id_key UNIQUE (room_id);
+
+
+
+ALTER TABLE ONLY room_memberships
+    ADD CONSTRAINT room_memberships_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY room_names
+    ADD CONSTRAINT room_names_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY room_tags_revisions
+    ADD CONSTRAINT room_tag_revisions_uniqueness UNIQUE (user_id, room_id);
+
+
+
+ALTER TABLE ONLY room_tags
+    ADD CONSTRAINT room_tag_uniqueness UNIQUE (user_id, room_id, tag);
+
+
+
+ALTER TABLE ONLY rooms
+    ADD CONSTRAINT rooms_pkey PRIMARY KEY (room_id);
+
+
+
+ALTER TABLE ONLY server_keys_json
+    ADD CONSTRAINT server_keys_json_uniqueness UNIQUE (server_name, key_id, from_server);
+
+
+
+ALTER TABLE ONLY server_signature_keys
+    ADD CONSTRAINT server_signature_keys_server_name_key_id_key UNIQUE (server_name, key_id);
+
+
+
+ALTER TABLE ONLY state_events
+    ADD CONSTRAINT state_events_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY state_groups
+    ADD CONSTRAINT state_groups_pkey PRIMARY KEY (id);
+
+
+
+ALTER TABLE ONLY stats_stream_pos
+    ADD CONSTRAINT stats_stream_pos_lock_key UNIQUE (lock);
+
+
+
+ALTER TABLE ONLY topics
+    ADD CONSTRAINT topics_event_id_key UNIQUE (event_id);
+
+
+
+ALTER TABLE ONLY user_directory_stream_pos
+    ADD CONSTRAINT user_directory_stream_pos_lock_key UNIQUE (lock);
+
+
+
+ALTER TABLE ONLY users
+    ADD CONSTRAINT users_name_key UNIQUE (name);
+
+
+
+CREATE INDEX access_tokens_device_id ON access_tokens USING btree (user_id, device_id);
+
+
+
+CREATE INDEX account_data_stream_id ON account_data USING btree (user_id, stream_id);
+
+
+
+CREATE INDEX application_services_txns_id ON application_services_txns USING btree (as_id);
+
+
+
+CREATE UNIQUE INDEX appservice_room_list_idx ON appservice_room_list USING btree (appservice_id, network_id, room_id);
+
+
+
+CREATE UNIQUE INDEX blocked_rooms_idx ON blocked_rooms USING btree (room_id);
+
+
+
+CREATE INDEX cache_invalidation_stream_id ON cache_invalidation_stream USING btree (stream_id);
+
+
+
+CREATE INDEX current_state_delta_stream_idx ON current_state_delta_stream USING btree (stream_id);
+
+
+
+CREATE INDEX current_state_events_member_index ON current_state_events USING btree (state_key) WHERE (type = 'm.room.member'::text);
+
+
+
+CREATE INDEX deleted_pushers_stream_id ON deleted_pushers USING btree (stream_id);
+
+
+
+CREATE INDEX device_federation_inbox_sender_id ON device_federation_inbox USING btree (origin, message_id);
+
+
+
+CREATE INDEX device_federation_outbox_destination_id ON device_federation_outbox USING btree (destination, stream_id);
+
+
+
+CREATE INDEX device_federation_outbox_id ON device_federation_outbox USING btree (stream_id);
+
+
+
+CREATE INDEX device_inbox_stream_id_user_id ON device_inbox USING btree (stream_id, user_id);
+
+
+
+CREATE INDEX device_inbox_user_stream_id ON device_inbox USING btree (user_id, device_id, stream_id);
+
+
+
+CREATE INDEX device_lists_outbound_last_success_idx ON device_lists_outbound_last_success USING btree (destination, user_id, stream_id);
+
+
+
+CREATE INDEX device_lists_outbound_pokes_id ON device_lists_outbound_pokes USING btree (destination, stream_id);
+
+
+
+CREATE INDEX device_lists_outbound_pokes_stream ON device_lists_outbound_pokes USING btree (stream_id);
+
+
+
+CREATE INDEX device_lists_outbound_pokes_user ON device_lists_outbound_pokes USING btree (destination, user_id);
+
+
+
+CREATE UNIQUE INDEX device_lists_remote_cache_unique_id ON device_lists_remote_cache USING btree (user_id, device_id);
+
+
+
+CREATE UNIQUE INDEX device_lists_remote_extremeties_unique_idx ON device_lists_remote_extremeties USING btree (user_id);
+
+
+
+CREATE INDEX device_lists_stream_id ON device_lists_stream USING btree (stream_id, user_id);
+
+
+
+CREATE INDEX device_lists_stream_user_id ON device_lists_stream USING btree (user_id, device_id);
+
+
+
+CREATE UNIQUE INDEX e2e_room_keys_idx ON e2e_room_keys USING btree (user_id, room_id, session_id);
+
+
+
+CREATE UNIQUE INDEX e2e_room_keys_versions_idx ON e2e_room_keys_versions USING btree (user_id, version);
+
+
+
+CREATE UNIQUE INDEX erased_users_user ON erased_users USING btree (user_id);
+
+
+
+CREATE INDEX ev_b_extrem_id ON event_backward_extremities USING btree (event_id);
+
+
+
+CREATE INDEX ev_b_extrem_room ON event_backward_extremities USING btree (room_id);
+
+
+
+CREATE INDEX ev_edges_id ON event_edges USING btree (event_id);
+
+
+
+CREATE INDEX ev_edges_prev_id ON event_edges USING btree (prev_event_id);
+
+
+
+CREATE INDEX ev_extrem_id ON event_forward_extremities USING btree (event_id);
+
+
+
+CREATE INDEX ev_extrem_room ON event_forward_extremities USING btree (room_id);
+
+
+
+CREATE INDEX evauth_edges_id ON event_auth USING btree (event_id);
+
+
+
+CREATE INDEX event_contains_url_index ON events USING btree (room_id, topological_ordering, stream_ordering) WHERE ((contains_url = true) AND (outlier = false));
+
+
+
+CREATE INDEX event_json_room_id ON event_json USING btree (room_id);
+
+
+
+CREATE INDEX event_push_actions_highlights_index ON event_push_actions USING btree (user_id, room_id, topological_ordering, stream_ordering) WHERE (highlight = 1);
+
+
+
+CREATE INDEX event_push_actions_rm_tokens ON event_push_actions USING btree (user_id, room_id, topological_ordering, stream_ordering);
+
+
+
+CREATE INDEX event_push_actions_room_id_user_id ON event_push_actions USING btree (room_id, user_id);
+
+
+
+CREATE INDEX event_push_actions_staging_id ON event_push_actions_staging USING btree (event_id);
+
+
+
+CREATE INDEX event_push_actions_stream_ordering ON event_push_actions USING btree (stream_ordering, user_id);
+
+
+
+CREATE INDEX event_push_actions_u_highlight ON event_push_actions USING btree (user_id, stream_ordering);
+
+
+
+CREATE INDEX event_push_summary_user_rm ON event_push_summary USING btree (user_id, room_id);
+
+
+
+CREATE INDEX event_reference_hashes_id ON event_reference_hashes USING btree (event_id);
+
+
+
+CREATE UNIQUE INDEX event_relations_id ON event_relations USING btree (event_id);
+
+
+
+CREATE INDEX event_relations_relates ON event_relations USING btree (relates_to_id, relation_type, aggregation_key);
+
+
+
+CREATE INDEX event_search_ev_ridx ON event_search USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX event_search_event_id_idx ON event_search USING btree (event_id);
+
+
+
+CREATE INDEX event_search_fts_idx ON event_search USING gin (vector);
+
+
+
+CREATE INDEX event_to_state_groups_sg_index ON event_to_state_groups USING btree (state_group);
+
+
+
+CREATE INDEX events_order_room ON events USING btree (room_id, topological_ordering, stream_ordering);
+
+
+
+CREATE INDEX events_room_stream ON events USING btree (room_id, stream_ordering);
+
+
+
+CREATE INDEX events_ts ON events USING btree (origin_server_ts, stream_ordering);
+
+
+
+CREATE INDEX group_attestations_remote_g_idx ON group_attestations_remote USING btree (group_id, user_id);
+
+
+
+CREATE INDEX group_attestations_remote_u_idx ON group_attestations_remote USING btree (user_id);
+
+
+
+CREATE INDEX group_attestations_remote_v_idx ON group_attestations_remote USING btree (valid_until_ms);
+
+
+
+CREATE INDEX group_attestations_renewals_g_idx ON group_attestations_renewals USING btree (group_id, user_id);
+
+
+
+CREATE INDEX group_attestations_renewals_u_idx ON group_attestations_renewals USING btree (user_id);
+
+
+
+CREATE INDEX group_attestations_renewals_v_idx ON group_attestations_renewals USING btree (valid_until_ms);
+
+
+
+CREATE UNIQUE INDEX group_invites_g_idx ON group_invites USING btree (group_id, user_id);
+
+
+
+CREATE INDEX group_invites_u_idx ON group_invites USING btree (user_id);
+
+
+
+CREATE UNIQUE INDEX group_rooms_g_idx ON group_rooms USING btree (group_id, room_id);
+
+
+
+CREATE INDEX group_rooms_r_idx ON group_rooms USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX group_summary_rooms_g_idx ON group_summary_rooms USING btree (group_id, room_id, category_id);
+
+
+
+CREATE INDEX group_summary_users_g_idx ON group_summary_users USING btree (group_id);
+
+
+
+CREATE UNIQUE INDEX group_users_g_idx ON group_users USING btree (group_id, user_id);
+
+
+
+CREATE INDEX group_users_u_idx ON group_users USING btree (user_id);
+
+
+
+CREATE UNIQUE INDEX groups_idx ON groups USING btree (group_id);
+
+
+
+CREATE INDEX local_group_membership_g_idx ON local_group_membership USING btree (group_id);
+
+
+
+CREATE INDEX local_group_membership_u_idx ON local_group_membership USING btree (user_id, group_id);
+
+
+
+CREATE INDEX local_invites_for_user_idx ON local_invites USING btree (invitee, locally_rejected, replaced_by, room_id);
+
+
+
+CREATE INDEX local_invites_id ON local_invites USING btree (stream_id);
+
+
+
+CREATE INDEX local_media_repository_thumbnails_media_id ON local_media_repository_thumbnails USING btree (media_id);
+
+
+
+CREATE INDEX local_media_repository_url_cache_by_url_download_ts ON local_media_repository_url_cache USING btree (url, download_ts);
+
+
+
+CREATE INDEX local_media_repository_url_cache_expires_idx ON local_media_repository_url_cache USING btree (expires_ts);
+
+
+
+CREATE INDEX local_media_repository_url_cache_media_idx ON local_media_repository_url_cache USING btree (media_id);
+
+
+
+CREATE INDEX local_media_repository_url_idx ON local_media_repository USING btree (created_ts) WHERE (url_cache IS NOT NULL);
+
+
+
+CREATE INDEX monthly_active_users_time_stamp ON monthly_active_users USING btree ("timestamp");
+
+
+
+CREATE UNIQUE INDEX monthly_active_users_users ON monthly_active_users USING btree (user_id);
+
+
+
+CREATE INDEX open_id_tokens_ts_valid_until_ms ON open_id_tokens USING btree (ts_valid_until_ms);
+
+
+
+CREATE INDEX presence_stream_id ON presence_stream USING btree (stream_id, user_id);
+
+
+
+CREATE INDEX presence_stream_user_id ON presence_stream USING btree (user_id);
+
+
+
+CREATE INDEX public_room_index ON rooms USING btree (is_public);
+
+
+
+CREATE INDEX public_room_list_stream_idx ON public_room_list_stream USING btree (stream_id);
+
+
+
+CREATE INDEX public_room_list_stream_rm_idx ON public_room_list_stream USING btree (room_id, stream_id);
+
+
+
+CREATE INDEX push_rules_enable_user_name ON push_rules_enable USING btree (user_name);
+
+
+
+CREATE INDEX push_rules_stream_id ON push_rules_stream USING btree (stream_id);
+
+
+
+CREATE INDEX push_rules_stream_user_stream_id ON push_rules_stream USING btree (user_id, stream_id);
+
+
+
+CREATE INDEX push_rules_user_name ON push_rules USING btree (user_name);
+
+
+
+CREATE UNIQUE INDEX ratelimit_override_idx ON ratelimit_override USING btree (user_id);
+
+
+
+CREATE INDEX receipts_linearized_id ON receipts_linearized USING btree (stream_id);
+
+
+
+CREATE INDEX receipts_linearized_room_stream ON receipts_linearized USING btree (room_id, stream_id);
+
+
+
+CREATE INDEX receipts_linearized_user ON receipts_linearized USING btree (user_id);
+
+
+
+CREATE INDEX received_transactions_ts ON received_transactions USING btree (ts);
+
+
+
+CREATE INDEX redactions_redacts ON redactions USING btree (redacts);
+
+
+
+CREATE INDEX remote_profile_cache_time ON remote_profile_cache USING btree (last_check);
+
+
+
+CREATE UNIQUE INDEX remote_profile_cache_user_id ON remote_profile_cache USING btree (user_id);
+
+
+
+CREATE INDEX room_account_data_stream_id ON room_account_data USING btree (user_id, stream_id);
+
+
+
+CREATE INDEX room_alias_servers_alias ON room_alias_servers USING btree (room_alias);
+
+
+
+CREATE INDEX room_aliases_id ON room_aliases USING btree (room_id);
+
+
+
+CREATE INDEX room_depth_room ON room_depth USING btree (room_id);
+
+
+
+CREATE INDEX room_memberships_room_id ON room_memberships USING btree (room_id);
+
+
+
+CREATE INDEX room_memberships_user_id ON room_memberships USING btree (user_id);
+
+
+
+CREATE INDEX room_names_room_id ON room_names USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX room_state_room ON room_state USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX room_stats_earliest_token_idx ON room_stats_earliest_token USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX room_stats_room_ts ON room_stats USING btree (room_id, ts);
+
+
+
+CREATE INDEX state_group_edges_idx ON state_group_edges USING btree (state_group);
+
+
+
+CREATE INDEX state_group_edges_prev_idx ON state_group_edges USING btree (prev_state_group);
+
+
+
+CREATE INDEX state_groups_state_type_idx ON state_groups_state USING btree (state_group, type, state_key);
+
+
+
+CREATE INDEX stream_ordering_to_exterm_idx ON stream_ordering_to_exterm USING btree (stream_ordering);
+
+
+
+CREATE INDEX stream_ordering_to_exterm_rm_idx ON stream_ordering_to_exterm USING btree (room_id, stream_ordering);
+
+
+
+CREATE UNIQUE INDEX threepid_guest_access_tokens_index ON threepid_guest_access_tokens USING btree (medium, address);
+
+
+
+CREATE INDEX topics_room_id ON topics USING btree (room_id);
+
+
+
+CREATE INDEX user_daily_visits_ts_idx ON user_daily_visits USING btree ("timestamp");
+
+
+
+CREATE INDEX user_daily_visits_uts_idx ON user_daily_visits USING btree (user_id, "timestamp");
+
+
+
+CREATE INDEX user_directory_room_idx ON user_directory USING btree (room_id);
+
+
+
+CREATE INDEX user_directory_search_fts_idx ON user_directory_search USING gin (vector);
+
+
+
+CREATE UNIQUE INDEX user_directory_search_user_idx ON user_directory_search USING btree (user_id);
+
+
+
+CREATE UNIQUE INDEX user_directory_user_idx ON user_directory USING btree (user_id);
+
+
+
+CREATE INDEX user_filters_by_user_id_filter_id ON user_filters USING btree (user_id, filter_id);
+
+
+
+CREATE INDEX user_ips_device_id ON user_ips USING btree (user_id, device_id, last_seen);
+
+
+
+CREATE INDEX user_ips_last_seen ON user_ips USING btree (user_id, last_seen);
+
+
+
+CREATE INDEX user_ips_last_seen_only ON user_ips USING btree (last_seen);
+
+
+
+CREATE UNIQUE INDEX user_ips_user_token_ip_unique_index ON user_ips USING btree (user_id, access_token, ip);
+
+
+
+CREATE UNIQUE INDEX user_stats_user_ts ON user_stats USING btree (user_id, ts);
+
+
+
+CREATE UNIQUE INDEX user_threepid_id_server_idx ON user_threepid_id_server USING btree (user_id, medium, address, id_server);
+
+
+
+CREATE INDEX user_threepids_medium_address ON user_threepids USING btree (medium, address);
+
+
+
+CREATE INDEX user_threepids_user_id ON user_threepids USING btree (user_id);
+
+
+
+CREATE INDEX users_creation_ts ON users USING btree (creation_ts);
+
+
+
+CREATE UNIQUE INDEX users_in_public_rooms_u_idx ON users_in_public_rooms USING btree (user_id, room_id);
+
+
+
+CREATE INDEX users_who_share_private_rooms_o_idx ON users_who_share_private_rooms USING btree (other_user_id);
+
+
+
+CREATE INDEX users_who_share_private_rooms_r_idx ON users_who_share_private_rooms USING btree (room_id);
+
+
+
+CREATE UNIQUE INDEX users_who_share_private_rooms_u_idx ON users_who_share_private_rooms USING btree (user_id, other_user_id, room_id);
+
+
+
diff --git a/synapse/storage/schema/full_schemas/54/full.sql.sqlite b/synapse/storage/schema/full_schemas/54/full.sql.sqlite
new file mode 100644
index 0000000000..be9295e4c9
--- /dev/null
+++ b/synapse/storage/schema/full_schemas/54/full.sql.sqlite
@@ -0,0 +1,260 @@
+CREATE TABLE application_services_state( as_id TEXT PRIMARY KEY, state VARCHAR(5), last_txn INTEGER );
+CREATE TABLE application_services_txns( as_id TEXT NOT NULL, txn_id INTEGER NOT NULL, event_ids TEXT NOT NULL, UNIQUE(as_id, txn_id) );
+CREATE INDEX application_services_txns_id ON application_services_txns ( as_id );
+CREATE TABLE presence( user_id TEXT NOT NULL, state VARCHAR(20), status_msg TEXT, mtime BIGINT, UNIQUE (user_id) );
+CREATE TABLE presence_allow_inbound( observed_user_id TEXT NOT NULL, observer_user_id TEXT NOT NULL, UNIQUE (observed_user_id, observer_user_id) );
+CREATE TABLE users( name TEXT, password_hash TEXT, creation_ts BIGINT, admin SMALLINT DEFAULT 0 NOT NULL, upgrade_ts BIGINT, is_guest SMALLINT DEFAULT 0 NOT NULL, appservice_id TEXT, consent_version TEXT, consent_server_notice_sent TEXT, user_type TEXT DEFAULT NULL, UNIQUE(name) );
+CREATE TABLE access_tokens( id BIGINT PRIMARY KEY, user_id TEXT NOT NULL, device_id TEXT, token TEXT NOT NULL, last_used BIGINT, UNIQUE(token) );
+CREATE TABLE user_ips ( user_id TEXT NOT NULL, access_token TEXT NOT NULL, device_id TEXT, ip TEXT NOT NULL, user_agent TEXT NOT NULL, last_seen BIGINT NOT NULL );
+CREATE TABLE profiles( user_id TEXT NOT NULL, displayname TEXT, avatar_url TEXT, UNIQUE(user_id) );
+CREATE TABLE received_transactions( transaction_id TEXT, origin TEXT, ts BIGINT, response_code INTEGER, response_json bytea, has_been_referenced smallint default 0, UNIQUE (transaction_id, origin) );
+CREATE TABLE destinations( destination TEXT PRIMARY KEY, retry_last_ts BIGINT, retry_interval INTEGER );
+CREATE TABLE events( stream_ordering INTEGER PRIMARY KEY, topological_ordering BIGINT NOT NULL, event_id TEXT NOT NULL, type TEXT NOT NULL, room_id TEXT NOT NULL, content TEXT, unrecognized_keys TEXT, processed BOOL NOT NULL, outlier BOOL NOT NULL, depth BIGINT DEFAULT 0 NOT NULL, origin_server_ts BIGINT, received_ts BIGINT, sender TEXT, contains_url BOOLEAN, UNIQUE (event_id) );
+CREATE INDEX events_order_room ON events ( room_id, topological_ordering, stream_ordering );
+CREATE TABLE event_json( event_id TEXT NOT NULL, room_id TEXT NOT NULL, internal_metadata TEXT NOT NULL, json TEXT NOT NULL, format_version INTEGER, UNIQUE (event_id) );
+CREATE INDEX event_json_room_id ON event_json(room_id);
+CREATE TABLE state_events( event_id TEXT NOT NULL, room_id TEXT NOT NULL, type TEXT NOT NULL, state_key TEXT NOT NULL, prev_state TEXT, UNIQUE (event_id) );
+CREATE TABLE current_state_events( event_id TEXT NOT NULL, room_id TEXT NOT NULL, type TEXT NOT NULL, state_key TEXT NOT NULL, UNIQUE (event_id), UNIQUE (room_id, type, state_key) );
+CREATE TABLE room_memberships( event_id TEXT NOT NULL, user_id TEXT NOT NULL, sender TEXT NOT NULL, room_id TEXT NOT NULL, membership TEXT NOT NULL, forgotten INTEGER DEFAULT 0, display_name TEXT, avatar_url TEXT, UNIQUE (event_id) );
+CREATE INDEX room_memberships_room_id ON room_memberships (room_id);
+CREATE INDEX room_memberships_user_id ON room_memberships (user_id);
+CREATE TABLE topics( event_id TEXT NOT NULL, room_id TEXT NOT NULL, topic TEXT NOT NULL, UNIQUE (event_id) );
+CREATE INDEX topics_room_id ON topics(room_id);
+CREATE TABLE room_names( event_id TEXT NOT NULL, room_id TEXT NOT NULL, name TEXT NOT NULL, UNIQUE (event_id) );
+CREATE INDEX room_names_room_id ON room_names(room_id);
+CREATE TABLE rooms( room_id TEXT PRIMARY KEY NOT NULL, is_public BOOL, creator TEXT );
+CREATE TABLE server_signature_keys( server_name TEXT, key_id TEXT, from_server TEXT, ts_added_ms BIGINT, verify_key bytea, ts_valid_until_ms BIGINT, UNIQUE (server_name, key_id) );
+CREATE TABLE rejections( event_id TEXT NOT NULL, reason TEXT NOT NULL, last_check TEXT NOT NULL, UNIQUE (event_id) );
+CREATE TABLE push_rules ( id BIGINT PRIMARY KEY, user_name TEXT NOT NULL, rule_id TEXT NOT NULL, priority_class SMALLINT NOT NULL, priority INTEGER NOT NULL DEFAULT 0, conditions TEXT NOT NULL, actions TEXT NOT NULL, UNIQUE(user_name, rule_id) );
+CREATE INDEX push_rules_user_name on push_rules (user_name);
+CREATE TABLE user_filters( user_id TEXT, filter_id BIGINT, filter_json bytea );
+CREATE INDEX user_filters_by_user_id_filter_id ON user_filters( user_id, filter_id );
+CREATE TABLE push_rules_enable ( id BIGINT PRIMARY KEY, user_name TEXT NOT NULL, rule_id TEXT NOT NULL, enabled SMALLINT, UNIQUE(user_name, rule_id) );
+CREATE INDEX push_rules_enable_user_name on push_rules_enable (user_name);
+CREATE TABLE event_forward_extremities( event_id TEXT NOT NULL, room_id TEXT NOT NULL, UNIQUE (event_id, room_id) );
+CREATE INDEX ev_extrem_room ON event_forward_extremities(room_id);
+CREATE INDEX ev_extrem_id ON event_forward_extremities(event_id);
+CREATE TABLE event_backward_extremities( event_id TEXT NOT NULL, room_id TEXT NOT NULL, UNIQUE (event_id, room_id) );
+CREATE INDEX ev_b_extrem_room ON event_backward_extremities(room_id);
+CREATE INDEX ev_b_extrem_id ON event_backward_extremities(event_id);
+CREATE TABLE event_edges( event_id TEXT NOT NULL, prev_event_id TEXT NOT NULL, room_id TEXT NOT NULL, is_state BOOL NOT NULL, UNIQUE (event_id, prev_event_id, room_id, is_state) );
+CREATE INDEX ev_edges_id ON event_edges(event_id);
+CREATE INDEX ev_edges_prev_id ON event_edges(prev_event_id);
+CREATE TABLE room_depth( room_id TEXT NOT NULL, min_depth INTEGER NOT NULL, UNIQUE (room_id) );
+CREATE INDEX room_depth_room ON room_depth(room_id);
+CREATE TABLE state_groups( id BIGINT PRIMARY KEY, room_id TEXT NOT NULL, event_id TEXT NOT NULL );
+CREATE TABLE state_groups_state( state_group BIGINT NOT NULL, room_id TEXT NOT NULL, type TEXT NOT NULL, state_key TEXT NOT NULL, event_id TEXT NOT NULL );
+CREATE TABLE event_to_state_groups( event_id TEXT NOT NULL, state_group BIGINT NOT NULL, UNIQUE (event_id) );
+CREATE TABLE local_media_repository ( media_id TEXT, media_type TEXT, media_length INTEGER, created_ts BIGINT, upload_name TEXT, user_id TEXT, quarantined_by TEXT, url_cache TEXT, last_access_ts BIGINT, UNIQUE (media_id) );
+CREATE TABLE local_media_repository_thumbnails ( media_id TEXT, thumbnail_width INTEGER, thumbnail_height INTEGER, thumbnail_type TEXT, thumbnail_method TEXT, thumbnail_length INTEGER, UNIQUE ( media_id, thumbnail_width, thumbnail_height, thumbnail_type ) );
+CREATE INDEX local_media_repository_thumbnails_media_id ON local_media_repository_thumbnails (media_id);
+CREATE TABLE remote_media_cache ( media_origin TEXT, media_id TEXT, media_type TEXT, created_ts BIGINT, upload_name TEXT, media_length INTEGER, filesystem_id TEXT, last_access_ts BIGINT, quarantined_by TEXT, UNIQUE (media_origin, media_id) );
+CREATE TABLE remote_media_cache_thumbnails ( media_origin TEXT, media_id TEXT, thumbnail_width INTEGER, thumbnail_height INTEGER, thumbnail_method TEXT, thumbnail_type TEXT, thumbnail_length INTEGER, filesystem_id TEXT, UNIQUE ( media_origin, media_id, thumbnail_width, thumbnail_height, thumbnail_type ) );
+CREATE TABLE redactions ( event_id TEXT NOT NULL, redacts TEXT NOT NULL, UNIQUE (event_id) );
+CREATE INDEX redactions_redacts ON redactions (redacts);
+CREATE TABLE room_aliases( room_alias TEXT NOT NULL, room_id TEXT NOT NULL, creator TEXT, UNIQUE (room_alias) );
+CREATE INDEX room_aliases_id ON room_aliases(room_id);
+CREATE TABLE room_alias_servers( room_alias TEXT NOT NULL, server TEXT NOT NULL );
+CREATE INDEX room_alias_servers_alias ON room_alias_servers(room_alias);
+CREATE TABLE event_reference_hashes ( event_id TEXT, algorithm TEXT, hash bytea, UNIQUE (event_id, algorithm) );
+CREATE INDEX event_reference_hashes_id ON event_reference_hashes(event_id);
+CREATE TABLE IF NOT EXISTS "server_keys_json" ( server_name TEXT NOT NULL, key_id TEXT NOT NULL, from_server TEXT NOT NULL, ts_added_ms BIGINT NOT NULL, ts_valid_until_ms BIGINT NOT NULL, key_json bytea NOT NULL, CONSTRAINT server_keys_json_uniqueness UNIQUE (server_name, key_id, from_server) );
+CREATE TABLE e2e_device_keys_json ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, ts_added_ms BIGINT NOT NULL, key_json TEXT NOT NULL, CONSTRAINT e2e_device_keys_json_uniqueness UNIQUE (user_id, device_id) );
+CREATE TABLE e2e_one_time_keys_json ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, algorithm TEXT NOT NULL, key_id TEXT NOT NULL, ts_added_ms BIGINT NOT NULL, key_json TEXT NOT NULL, CONSTRAINT e2e_one_time_keys_json_uniqueness UNIQUE (user_id, device_id, algorithm, key_id) );
+CREATE TABLE receipts_graph( room_id TEXT NOT NULL, receipt_type TEXT NOT NULL, user_id TEXT NOT NULL, event_ids TEXT NOT NULL, data TEXT NOT NULL, CONSTRAINT receipts_graph_uniqueness UNIQUE (room_id, receipt_type, user_id) );
+CREATE TABLE receipts_linearized ( stream_id BIGINT NOT NULL, room_id TEXT NOT NULL, receipt_type TEXT NOT NULL, user_id TEXT NOT NULL, event_id TEXT NOT NULL, data TEXT NOT NULL, CONSTRAINT receipts_linearized_uniqueness UNIQUE (room_id, receipt_type, user_id) );
+CREATE INDEX receipts_linearized_id ON receipts_linearized( stream_id );
+CREATE INDEX receipts_linearized_room_stream ON receipts_linearized( room_id, stream_id );
+CREATE TABLE IF NOT EXISTS "user_threepids" ( user_id TEXT NOT NULL, medium TEXT NOT NULL, address TEXT NOT NULL, validated_at BIGINT NOT NULL, added_at BIGINT NOT NULL, CONSTRAINT medium_address UNIQUE (medium, address) );
+CREATE INDEX user_threepids_user_id ON user_threepids(user_id);
+CREATE TABLE background_updates( update_name TEXT NOT NULL, progress_json TEXT NOT NULL, depends_on TEXT, CONSTRAINT background_updates_uniqueness UNIQUE (update_name) );
+CREATE VIRTUAL TABLE event_search USING fts4 ( event_id, room_id, sender, key, value )
+/* event_search(event_id,room_id,sender,"key",value) */;
+CREATE TABLE IF NOT EXISTS 'event_search_content'(docid INTEGER PRIMARY KEY, 'c0event_id', 'c1room_id', 'c2sender', 'c3key', 'c4value');
+CREATE TABLE IF NOT EXISTS 'event_search_segments'(blockid INTEGER PRIMARY KEY, block BLOB);
+CREATE TABLE IF NOT EXISTS 'event_search_segdir'(level INTEGER,idx INTEGER,start_block INTEGER,leaves_end_block INTEGER,end_block INTEGER,root BLOB,PRIMARY KEY(level, idx));
+CREATE TABLE IF NOT EXISTS 'event_search_docsize'(docid INTEGER PRIMARY KEY, size BLOB);
+CREATE TABLE IF NOT EXISTS 'event_search_stat'(id INTEGER PRIMARY KEY, value BLOB);
+CREATE TABLE guest_access( event_id TEXT NOT NULL, room_id TEXT NOT NULL, guest_access TEXT NOT NULL, UNIQUE (event_id) );
+CREATE TABLE history_visibility( event_id TEXT NOT NULL, room_id TEXT NOT NULL, history_visibility TEXT NOT NULL, UNIQUE (event_id) );
+CREATE TABLE room_tags( user_id TEXT NOT NULL, room_id TEXT NOT NULL, tag     TEXT NOT NULL, content TEXT NOT NULL, CONSTRAINT room_tag_uniqueness UNIQUE (user_id, room_id, tag) );
+CREATE TABLE room_tags_revisions ( user_id TEXT NOT NULL, room_id TEXT NOT NULL, stream_id BIGINT NOT NULL, CONSTRAINT room_tag_revisions_uniqueness UNIQUE (user_id, room_id) );
+CREATE TABLE IF NOT EXISTS "account_data_max_stream_id"( Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, stream_id  BIGINT NOT NULL, CHECK (Lock='X') );
+CREATE TABLE account_data( user_id TEXT NOT NULL, account_data_type TEXT NOT NULL, stream_id BIGINT NOT NULL, content TEXT NOT NULL, CONSTRAINT account_data_uniqueness UNIQUE (user_id, account_data_type) );
+CREATE TABLE room_account_data( user_id TEXT NOT NULL, room_id TEXT NOT NULL, account_data_type TEXT NOT NULL, stream_id BIGINT NOT NULL, content TEXT NOT NULL, CONSTRAINT room_account_data_uniqueness UNIQUE (user_id, room_id, account_data_type) );
+CREATE INDEX account_data_stream_id on account_data(user_id, stream_id);
+CREATE INDEX room_account_data_stream_id on room_account_data(user_id, stream_id);
+CREATE INDEX events_ts ON events(origin_server_ts, stream_ordering);
+CREATE TABLE event_push_actions( room_id TEXT NOT NULL, event_id TEXT NOT NULL, user_id TEXT NOT NULL, profile_tag VARCHAR(32), actions TEXT NOT NULL, topological_ordering BIGINT, stream_ordering BIGINT, notif SMALLINT, highlight SMALLINT, CONSTRAINT event_id_user_id_profile_tag_uniqueness UNIQUE (room_id, event_id, user_id, profile_tag) );
+CREATE INDEX event_push_actions_room_id_user_id on event_push_actions(room_id, user_id);
+CREATE INDEX events_room_stream on events(room_id, stream_ordering);
+CREATE INDEX public_room_index on rooms(is_public);
+CREATE INDEX receipts_linearized_user ON receipts_linearized( user_id );
+CREATE INDEX event_push_actions_rm_tokens on event_push_actions( user_id, room_id, topological_ordering, stream_ordering );
+CREATE TABLE presence_stream( stream_id BIGINT, user_id TEXT, state TEXT, last_active_ts BIGINT, last_federation_update_ts BIGINT, last_user_sync_ts BIGINT, status_msg TEXT, currently_active BOOLEAN );
+CREATE INDEX presence_stream_id ON presence_stream(stream_id, user_id);
+CREATE INDEX presence_stream_user_id ON presence_stream(user_id);
+CREATE TABLE push_rules_stream( stream_id BIGINT NOT NULL, event_stream_ordering BIGINT NOT NULL, user_id TEXT NOT NULL, rule_id TEXT NOT NULL, op TEXT NOT NULL, priority_class SMALLINT, priority INTEGER, conditions TEXT, actions TEXT );
+CREATE INDEX push_rules_stream_id ON push_rules_stream(stream_id);
+CREATE INDEX push_rules_stream_user_stream_id on push_rules_stream(user_id, stream_id);
+CREATE TABLE ex_outlier_stream( event_stream_ordering BIGINT PRIMARY KEY NOT NULL, event_id TEXT NOT NULL, state_group BIGINT NOT NULL );
+CREATE TABLE threepid_guest_access_tokens( medium TEXT, address TEXT, guest_access_token TEXT, first_inviter TEXT );
+CREATE UNIQUE INDEX threepid_guest_access_tokens_index ON threepid_guest_access_tokens(medium, address);
+CREATE TABLE local_invites( stream_id BIGINT NOT NULL, inviter TEXT NOT NULL, invitee TEXT NOT NULL, event_id TEXT NOT NULL, room_id TEXT NOT NULL, locally_rejected TEXT, replaced_by TEXT );
+CREATE INDEX local_invites_id ON local_invites(stream_id);
+CREATE INDEX local_invites_for_user_idx ON local_invites(invitee, locally_rejected, replaced_by, room_id);
+CREATE INDEX event_push_actions_stream_ordering on event_push_actions( stream_ordering, user_id );
+CREATE TABLE open_id_tokens ( token TEXT NOT NULL PRIMARY KEY, ts_valid_until_ms bigint NOT NULL, user_id TEXT NOT NULL, UNIQUE (token) );
+CREATE INDEX open_id_tokens_ts_valid_until_ms ON open_id_tokens(ts_valid_until_ms);
+CREATE TABLE pusher_throttle( pusher BIGINT NOT NULL, room_id TEXT NOT NULL, last_sent_ts BIGINT, throttle_ms BIGINT, PRIMARY KEY (pusher, room_id) );
+CREATE TABLE event_reports( id BIGINT NOT NULL PRIMARY KEY, received_ts BIGINT NOT NULL, room_id TEXT NOT NULL, event_id TEXT NOT NULL, user_id TEXT NOT NULL, reason TEXT, content TEXT );
+CREATE TABLE devices ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, display_name TEXT, CONSTRAINT device_uniqueness UNIQUE (user_id, device_id) );
+CREATE TABLE appservice_stream_position( Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, stream_ordering BIGINT, CHECK (Lock='X') );
+CREATE TABLE device_inbox ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, stream_id BIGINT NOT NULL, message_json TEXT NOT NULL );
+CREATE INDEX device_inbox_user_stream_id ON device_inbox(user_id, device_id, stream_id);
+CREATE INDEX received_transactions_ts ON received_transactions(ts);
+CREATE TABLE device_federation_outbox ( destination TEXT NOT NULL, stream_id BIGINT NOT NULL, queued_ts BIGINT NOT NULL, messages_json TEXT NOT NULL );
+CREATE INDEX device_federation_outbox_destination_id ON device_federation_outbox(destination, stream_id);
+CREATE TABLE device_federation_inbox ( origin TEXT NOT NULL, message_id TEXT NOT NULL, received_ts BIGINT NOT NULL );
+CREATE INDEX device_federation_inbox_sender_id ON device_federation_inbox(origin, message_id);
+CREATE TABLE device_max_stream_id ( stream_id BIGINT NOT NULL );
+CREATE TABLE public_room_list_stream ( stream_id BIGINT NOT NULL, room_id TEXT NOT NULL, visibility BOOLEAN NOT NULL , appservice_id TEXT, network_id TEXT);
+CREATE INDEX public_room_list_stream_idx on public_room_list_stream( stream_id );
+CREATE INDEX public_room_list_stream_rm_idx on public_room_list_stream( room_id, stream_id );
+CREATE TABLE state_group_edges( state_group BIGINT NOT NULL, prev_state_group BIGINT NOT NULL );
+CREATE INDEX state_group_edges_idx ON state_group_edges(state_group);
+CREATE INDEX state_group_edges_prev_idx ON state_group_edges(prev_state_group);
+CREATE TABLE stream_ordering_to_exterm ( stream_ordering BIGINT NOT NULL, room_id TEXT NOT NULL, event_id TEXT NOT NULL );
+CREATE INDEX stream_ordering_to_exterm_idx on stream_ordering_to_exterm( stream_ordering );
+CREATE INDEX stream_ordering_to_exterm_rm_idx on stream_ordering_to_exterm( room_id, stream_ordering );
+CREATE TABLE IF NOT EXISTS "event_auth"( event_id TEXT NOT NULL, auth_id TEXT NOT NULL, room_id TEXT NOT NULL );
+CREATE INDEX evauth_edges_id ON event_auth(event_id);
+CREATE INDEX user_threepids_medium_address on user_threepids (medium, address);
+CREATE TABLE appservice_room_list( appservice_id TEXT NOT NULL, network_id TEXT NOT NULL, room_id TEXT NOT NULL );
+CREATE UNIQUE INDEX appservice_room_list_idx ON appservice_room_list( appservice_id, network_id, room_id );
+CREATE INDEX device_federation_outbox_id ON device_federation_outbox(stream_id);
+CREATE TABLE federation_stream_position( type TEXT NOT NULL, stream_id INTEGER NOT NULL );
+CREATE TABLE device_lists_remote_cache ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, content TEXT NOT NULL );
+CREATE TABLE device_lists_remote_extremeties ( user_id TEXT NOT NULL, stream_id TEXT NOT NULL );
+CREATE TABLE device_lists_stream ( stream_id BIGINT NOT NULL, user_id TEXT NOT NULL, device_id TEXT NOT NULL );
+CREATE INDEX device_lists_stream_id ON device_lists_stream(stream_id, user_id);
+CREATE TABLE device_lists_outbound_pokes ( destination TEXT NOT NULL, stream_id BIGINT NOT NULL, user_id TEXT NOT NULL, device_id TEXT NOT NULL, sent BOOLEAN NOT NULL, ts BIGINT NOT NULL );
+CREATE INDEX device_lists_outbound_pokes_id ON device_lists_outbound_pokes(destination, stream_id);
+CREATE INDEX device_lists_outbound_pokes_user ON device_lists_outbound_pokes(destination, user_id);
+CREATE TABLE event_push_summary ( user_id TEXT NOT NULL, room_id TEXT NOT NULL, notif_count BIGINT NOT NULL, stream_ordering BIGINT NOT NULL );
+CREATE INDEX event_push_summary_user_rm ON event_push_summary(user_id, room_id);
+CREATE TABLE event_push_summary_stream_ordering ( Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, stream_ordering BIGINT NOT NULL, CHECK (Lock='X') );
+CREATE TABLE IF NOT EXISTS "pushers" ( id BIGINT PRIMARY KEY, user_name TEXT NOT NULL, access_token BIGINT DEFAULT NULL, profile_tag TEXT NOT NULL, kind TEXT NOT NULL, app_id TEXT NOT NULL, app_display_name TEXT NOT NULL, device_display_name TEXT NOT NULL, pushkey TEXT NOT NULL, ts BIGINT NOT NULL, lang TEXT, data TEXT, last_stream_ordering INTEGER, last_success BIGINT, failing_since BIGINT, UNIQUE (app_id, pushkey, user_name) );
+CREATE INDEX device_lists_outbound_pokes_stream ON device_lists_outbound_pokes(stream_id);
+CREATE TABLE ratelimit_override ( user_id TEXT NOT NULL, messages_per_second BIGINT, burst_count BIGINT );
+CREATE UNIQUE INDEX ratelimit_override_idx ON ratelimit_override(user_id);
+CREATE TABLE current_state_delta_stream ( stream_id BIGINT NOT NULL, room_id TEXT NOT NULL, type TEXT NOT NULL, state_key TEXT NOT NULL, event_id TEXT, prev_event_id TEXT );
+CREATE INDEX current_state_delta_stream_idx ON current_state_delta_stream(stream_id);
+CREATE TABLE device_lists_outbound_last_success ( destination TEXT NOT NULL, user_id TEXT NOT NULL, stream_id BIGINT NOT NULL );
+CREATE INDEX device_lists_outbound_last_success_idx ON device_lists_outbound_last_success( destination, user_id, stream_id );
+CREATE TABLE user_directory_stream_pos ( Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, stream_id BIGINT, CHECK (Lock='X') );
+CREATE VIRTUAL TABLE user_directory_search USING fts4 ( user_id, value )
+/* user_directory_search(user_id,value) */;
+CREATE TABLE IF NOT EXISTS 'user_directory_search_content'(docid INTEGER PRIMARY KEY, 'c0user_id', 'c1value');
+CREATE TABLE IF NOT EXISTS 'user_directory_search_segments'(blockid INTEGER PRIMARY KEY, block BLOB);
+CREATE TABLE IF NOT EXISTS 'user_directory_search_segdir'(level INTEGER,idx INTEGER,start_block INTEGER,leaves_end_block INTEGER,end_block INTEGER,root BLOB,PRIMARY KEY(level, idx));
+CREATE TABLE IF NOT EXISTS 'user_directory_search_docsize'(docid INTEGER PRIMARY KEY, size BLOB);
+CREATE TABLE IF NOT EXISTS 'user_directory_search_stat'(id INTEGER PRIMARY KEY, value BLOB);
+CREATE TABLE blocked_rooms ( room_id TEXT NOT NULL, user_id TEXT NOT NULL );
+CREATE UNIQUE INDEX blocked_rooms_idx ON blocked_rooms(room_id);
+CREATE TABLE IF NOT EXISTS "local_media_repository_url_cache"( url TEXT, response_code INTEGER, etag TEXT, expires_ts BIGINT, og TEXT, media_id TEXT, download_ts BIGINT );
+CREATE INDEX local_media_repository_url_cache_expires_idx ON local_media_repository_url_cache(expires_ts);
+CREATE INDEX local_media_repository_url_cache_by_url_download_ts ON local_media_repository_url_cache(url, download_ts);
+CREATE INDEX local_media_repository_url_cache_media_idx ON local_media_repository_url_cache(media_id);
+CREATE TABLE group_users ( group_id TEXT NOT NULL, user_id TEXT NOT NULL, is_admin BOOLEAN NOT NULL, is_public BOOLEAN NOT NULL );
+CREATE TABLE group_invites ( group_id TEXT NOT NULL, user_id TEXT NOT NULL );
+CREATE TABLE group_rooms ( group_id TEXT NOT NULL, room_id TEXT NOT NULL, is_public BOOLEAN NOT NULL );
+CREATE TABLE group_summary_rooms ( group_id TEXT NOT NULL, room_id TEXT NOT NULL, category_id TEXT NOT NULL, room_order BIGINT NOT NULL, is_public BOOLEAN NOT NULL, UNIQUE (group_id, category_id, room_id, room_order), CHECK (room_order > 0) );
+CREATE UNIQUE INDEX group_summary_rooms_g_idx ON group_summary_rooms(group_id, room_id, category_id);
+CREATE TABLE group_summary_room_categories ( group_id TEXT NOT NULL, category_id TEXT NOT NULL, cat_order BIGINT NOT NULL, UNIQUE (group_id, category_id, cat_order), CHECK (cat_order > 0) );
+CREATE TABLE group_room_categories ( group_id TEXT NOT NULL, category_id TEXT NOT NULL, profile TEXT NOT NULL, is_public BOOLEAN NOT NULL, UNIQUE (group_id, category_id) );
+CREATE TABLE group_summary_users ( group_id TEXT NOT NULL, user_id TEXT NOT NULL, role_id TEXT NOT NULL, user_order BIGINT NOT NULL, is_public BOOLEAN NOT NULL );
+CREATE INDEX group_summary_users_g_idx ON group_summary_users(group_id);
+CREATE TABLE group_summary_roles ( group_id TEXT NOT NULL, role_id TEXT NOT NULL, role_order BIGINT NOT NULL, UNIQUE (group_id, role_id, role_order), CHECK (role_order > 0) );
+CREATE TABLE group_roles ( group_id TEXT NOT NULL, role_id TEXT NOT NULL, profile TEXT NOT NULL, is_public BOOLEAN NOT NULL, UNIQUE (group_id, role_id) );
+CREATE TABLE group_attestations_renewals ( group_id TEXT NOT NULL, user_id TEXT NOT NULL, valid_until_ms BIGINT NOT NULL );
+CREATE INDEX group_attestations_renewals_g_idx ON group_attestations_renewals(group_id, user_id);
+CREATE INDEX group_attestations_renewals_u_idx ON group_attestations_renewals(user_id);
+CREATE INDEX group_attestations_renewals_v_idx ON group_attestations_renewals(valid_until_ms);
+CREATE TABLE group_attestations_remote ( group_id TEXT NOT NULL, user_id TEXT NOT NULL, valid_until_ms BIGINT NOT NULL, attestation_json TEXT NOT NULL );
+CREATE INDEX group_attestations_remote_g_idx ON group_attestations_remote(group_id, user_id);
+CREATE INDEX group_attestations_remote_u_idx ON group_attestations_remote(user_id);
+CREATE INDEX group_attestations_remote_v_idx ON group_attestations_remote(valid_until_ms);
+CREATE TABLE local_group_membership ( group_id TEXT NOT NULL, user_id TEXT NOT NULL, is_admin BOOLEAN NOT NULL, membership TEXT NOT NULL, is_publicised BOOLEAN NOT NULL, content TEXT NOT NULL );
+CREATE INDEX local_group_membership_u_idx ON local_group_membership(user_id, group_id);
+CREATE INDEX local_group_membership_g_idx ON local_group_membership(group_id);
+CREATE TABLE local_group_updates ( stream_id BIGINT NOT NULL, group_id TEXT NOT NULL, user_id TEXT NOT NULL, type TEXT NOT NULL, content TEXT NOT NULL );
+CREATE TABLE remote_profile_cache ( user_id TEXT NOT NULL, displayname TEXT, avatar_url TEXT, last_check BIGINT NOT NULL );
+CREATE UNIQUE INDEX remote_profile_cache_user_id ON remote_profile_cache(user_id);
+CREATE INDEX remote_profile_cache_time ON remote_profile_cache(last_check);
+CREATE TABLE IF NOT EXISTS "deleted_pushers" ( stream_id BIGINT NOT NULL, app_id TEXT NOT NULL, pushkey TEXT NOT NULL, user_id TEXT NOT NULL );
+CREATE INDEX deleted_pushers_stream_id ON deleted_pushers (stream_id);
+CREATE TABLE IF NOT EXISTS "groups" ( group_id TEXT NOT NULL, name TEXT, avatar_url TEXT, short_description TEXT, long_description TEXT, is_public BOOL NOT NULL , join_policy TEXT NOT NULL DEFAULT 'invite');
+CREATE UNIQUE INDEX groups_idx ON groups(group_id);
+CREATE TABLE IF NOT EXISTS "user_directory" ( user_id TEXT NOT NULL, room_id TEXT, display_name TEXT, avatar_url TEXT );
+CREATE INDEX user_directory_room_idx ON user_directory(room_id);
+CREATE UNIQUE INDEX user_directory_user_idx ON user_directory(user_id);
+CREATE TABLE event_push_actions_staging ( event_id TEXT NOT NULL, user_id TEXT NOT NULL, actions TEXT NOT NULL, notif SMALLINT NOT NULL, highlight SMALLINT NOT NULL );
+CREATE INDEX event_push_actions_staging_id ON event_push_actions_staging(event_id);
+CREATE TABLE users_pending_deactivation ( user_id TEXT NOT NULL );
+CREATE UNIQUE INDEX group_invites_g_idx ON group_invites(group_id, user_id);
+CREATE UNIQUE INDEX group_users_g_idx ON group_users(group_id, user_id);
+CREATE INDEX group_users_u_idx ON group_users(user_id);
+CREATE INDEX group_invites_u_idx ON group_invites(user_id);
+CREATE UNIQUE INDEX group_rooms_g_idx ON group_rooms(group_id, room_id);
+CREATE INDEX group_rooms_r_idx ON group_rooms(room_id);
+CREATE TABLE user_daily_visits ( user_id TEXT NOT NULL, device_id TEXT, timestamp BIGINT NOT NULL );
+CREATE INDEX user_daily_visits_uts_idx ON user_daily_visits(user_id, timestamp);
+CREATE INDEX user_daily_visits_ts_idx ON user_daily_visits(timestamp);
+CREATE TABLE erased_users ( user_id TEXT NOT NULL );
+CREATE UNIQUE INDEX erased_users_user ON erased_users(user_id);
+CREATE TABLE monthly_active_users ( user_id TEXT NOT NULL, timestamp BIGINT NOT NULL );
+CREATE UNIQUE INDEX monthly_active_users_users ON monthly_active_users(user_id);
+CREATE INDEX monthly_active_users_time_stamp ON monthly_active_users(timestamp);
+CREATE TABLE IF NOT EXISTS "e2e_room_keys_versions" ( user_id TEXT NOT NULL, version BIGINT NOT NULL, algorithm TEXT NOT NULL, auth_data TEXT NOT NULL, deleted SMALLINT DEFAULT 0 NOT NULL );
+CREATE UNIQUE INDEX e2e_room_keys_versions_idx ON e2e_room_keys_versions(user_id, version);
+CREATE TABLE IF NOT EXISTS "e2e_room_keys" ( user_id TEXT NOT NULL, room_id TEXT NOT NULL, session_id TEXT NOT NULL, version BIGINT NOT NULL, first_message_index INT, forwarded_count INT, is_verified BOOLEAN, session_data TEXT NOT NULL );
+CREATE UNIQUE INDEX e2e_room_keys_idx ON e2e_room_keys(user_id, room_id, session_id);
+CREATE TABLE users_who_share_private_rooms ( user_id TEXT NOT NULL, other_user_id TEXT NOT NULL, room_id TEXT NOT NULL );
+CREATE UNIQUE INDEX users_who_share_private_rooms_u_idx ON users_who_share_private_rooms(user_id, other_user_id, room_id);
+CREATE INDEX users_who_share_private_rooms_r_idx ON users_who_share_private_rooms(room_id);
+CREATE INDEX users_who_share_private_rooms_o_idx ON users_who_share_private_rooms(other_user_id);
+CREATE TABLE user_threepid_id_server ( user_id TEXT NOT NULL, medium TEXT NOT NULL, address TEXT NOT NULL, id_server TEXT NOT NULL );
+CREATE UNIQUE INDEX user_threepid_id_server_idx ON user_threepid_id_server( user_id, medium, address, id_server );
+CREATE TABLE users_in_public_rooms ( user_id TEXT NOT NULL, room_id TEXT NOT NULL );
+CREATE UNIQUE INDEX users_in_public_rooms_u_idx ON users_in_public_rooms(user_id, room_id);
+CREATE TABLE account_validity ( user_id TEXT PRIMARY KEY, expiration_ts_ms BIGINT NOT NULL, email_sent BOOLEAN NOT NULL, renewal_token TEXT );
+CREATE TABLE event_relations ( event_id TEXT NOT NULL, relates_to_id TEXT NOT NULL, relation_type TEXT NOT NULL, aggregation_key TEXT );
+CREATE UNIQUE INDEX event_relations_id ON event_relations(event_id);
+CREATE INDEX event_relations_relates ON event_relations(relates_to_id, relation_type, aggregation_key);
+CREATE TABLE stats_stream_pos ( Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE, stream_id BIGINT, CHECK (Lock='X') );
+CREATE TABLE user_stats ( user_id TEXT NOT NULL, ts BIGINT NOT NULL, bucket_size INT NOT NULL, public_rooms INT NOT NULL, private_rooms INT NOT NULL );
+CREATE UNIQUE INDEX user_stats_user_ts ON user_stats(user_id, ts);
+CREATE TABLE room_stats ( room_id TEXT NOT NULL, ts BIGINT NOT NULL, bucket_size INT NOT NULL, current_state_events INT NOT NULL, joined_members INT NOT NULL, invited_members INT NOT NULL, left_members INT NOT NULL, banned_members INT NOT NULL, state_events INT NOT NULL );
+CREATE UNIQUE INDEX room_stats_room_ts ON room_stats(room_id, ts);
+CREATE TABLE room_state ( room_id TEXT NOT NULL, join_rules TEXT, history_visibility TEXT, encryption TEXT, name TEXT, topic TEXT, avatar TEXT, canonical_alias TEXT );
+CREATE UNIQUE INDEX room_state_room ON room_state(room_id);
+CREATE TABLE room_stats_earliest_token ( room_id TEXT NOT NULL, token BIGINT NOT NULL );
+CREATE UNIQUE INDEX room_stats_earliest_token_idx ON room_stats_earliest_token(room_id);
+CREATE INDEX access_tokens_device_id ON access_tokens (user_id, device_id);
+CREATE INDEX user_ips_device_id ON user_ips (user_id, device_id, last_seen);
+CREATE INDEX event_contains_url_index ON events (room_id, topological_ordering, stream_ordering);
+CREATE INDEX event_push_actions_u_highlight ON event_push_actions (user_id, stream_ordering);
+CREATE INDEX event_push_actions_highlights_index ON event_push_actions (user_id, room_id, topological_ordering, stream_ordering);
+CREATE INDEX current_state_events_member_index ON current_state_events (state_key);
+CREATE INDEX device_inbox_stream_id_user_id ON device_inbox (stream_id, user_id);
+CREATE INDEX device_lists_stream_user_id ON device_lists_stream (user_id, device_id);
+CREATE INDEX local_media_repository_url_idx ON local_media_repository (created_ts);
+CREATE INDEX user_ips_last_seen ON user_ips (user_id, last_seen);
+CREATE INDEX user_ips_last_seen_only ON user_ips (last_seen);
+CREATE INDEX users_creation_ts ON users (creation_ts);
+CREATE INDEX event_to_state_groups_sg_index ON event_to_state_groups (state_group);
+CREATE UNIQUE INDEX device_lists_remote_cache_unique_id ON device_lists_remote_cache (user_id, device_id);
+CREATE INDEX state_groups_state_type_idx ON state_groups_state(state_group, type, state_key);
+CREATE UNIQUE INDEX device_lists_remote_extremeties_unique_idx ON device_lists_remote_extremeties (user_id);
+CREATE UNIQUE INDEX user_ips_user_token_ip_unique_index ON user_ips (user_id, access_token, ip);
diff --git a/synapse/storage/schema/full_schemas/54/stream_positions.sql b/synapse/storage/schema/full_schemas/54/stream_positions.sql
new file mode 100644
index 0000000000..c265fd20e2
--- /dev/null
+++ b/synapse/storage/schema/full_schemas/54/stream_positions.sql
@@ -0,0 +1,7 @@
+
+INSERT INTO appservice_stream_position (stream_ordering) SELECT COALESCE(MAX(stream_ordering), 0) FROM events;
+INSERT INTO federation_stream_position (type, stream_id) VALUES ('federation', -1);
+INSERT INTO federation_stream_position (type, stream_id) SELECT 'events', coalesce(max(stream_ordering), -1) FROM events;
+INSERT INTO user_directory_stream_pos (stream_id) VALUES (0);
+INSERT INTO stats_stream_pos (stream_id) VALUES (0);
+INSERT INTO event_push_summary_stream_ordering (stream_ordering) VALUES (0);
diff --git a/synapse/storage/schema/full_schemas/README.txt b/synapse/storage/schema/full_schemas/README.txt
new file mode 100644
index 0000000000..d3f6401344
--- /dev/null
+++ b/synapse/storage/schema/full_schemas/README.txt
@@ -0,0 +1,19 @@
+Building full schema dumps
+==========================
+
+These schemas need to be made from a database that has had all background updates run.
+
+Postgres
+--------
+
+$ pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner $DATABASE_NAME| sed -e '/^--/d' -e 's/public\.//g' -e '/^SET /d' -e '/^SELECT /d' > full.sql.postgres
+
+SQLite
+------
+
+$ sqlite3 $DATABASE_FILE ".schema" > full.sql.sqlite
+
+After
+-----
+
+Delete the CREATE statements for "sqlite_stat1", "schema_version", "applied_schema_deltas", and "applied_module_schemas".
\ No newline at end of file
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index 226f8f1b7e..10a27c207a 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -341,29 +341,7 @@ class SearchStore(BackgroundUpdateStore):
                 for entry in entries
             )
 
-            # inserts to a GIN index are normally batched up into a pending
-            # list, and then all committed together once the list gets to a
-            # certain size. The trouble with that is that postgres (pre-9.5)
-            # uses work_mem to determine the length of the list, and work_mem
-            # is typically very large.
-            #
-            # We therefore reduce work_mem while we do the insert.
-            #
-            # (postgres 9.5 uses the separate gin_pending_list_limit setting,
-            # so doesn't suffer the same problem, but changing work_mem will
-            # be harmless)
-            #
-            # Note that we don't need to worry about restoring it on
-            # exception, because exceptions will cause the transaction to be
-            # rolled back, including the effects of the SET command.
-            #
-            # Also: we use SET rather than SET LOCAL because there's lots of
-            # other stuff going on in this transaction, which want to have the
-            # normal work_mem setting.
-
-            txn.execute("SET work_mem='256kB'")
             txn.executemany(sql, args)
-            txn.execute("RESET work_mem")
 
         elif isinstance(self.database_engine, Sqlite3Engine):
             sql = (
@@ -460,7 +438,7 @@ class SearchStore(BackgroundUpdateStore):
 
         results = list(filter(lambda row: row["room_id"] in room_ids, results))
 
-        events = yield self._get_events([r["event_id"] for r in results])
+        events = yield self.get_events_as_list([r["event_id"] for r in results])
 
         event_map = {ev.event_id: ev for ev in events}
 
@@ -605,7 +583,7 @@ class SearchStore(BackgroundUpdateStore):
 
         results = list(filter(lambda row: row["room_id"] in room_ids, results))
 
-        events = yield self._get_events([r["event_id"] for r in results])
+        events = yield self.get_events_as_list([r["event_id"] for r in results])
 
         event_map = {ev.event_id: ev for ev in events}
 
diff --git a/synapse/storage/state_deltas.py b/synapse/storage/state_deltas.py
index 56e42f583d..5fdb442104 100644
--- a/synapse/storage/state_deltas.py
+++ b/synapse/storage/state_deltas.py
@@ -22,6 +22,24 @@ logger = logging.getLogger(__name__)
 
 class StateDeltasStore(SQLBaseStore):
     def get_current_state_deltas(self, prev_stream_id):
+        """Fetch a list of room state changes since the given stream id
+
+        Each entry in the result contains the following fields:
+            - stream_id (int)
+            - room_id (str)
+            - type (str): event type
+            - state_key (str):
+            - event_id (str|None): new event_id for this state key. None if the
+                state has been deleted.
+            - prev_event_id (str|None): previous event_id for this state key. None
+                if it's new state.
+
+        Args:
+            prev_stream_id (int): point to get changes since (exclusive)
+
+        Returns:
+            Deferred[list[dict]]: results
+        """
         prev_stream_id = int(prev_stream_id)
         if not self._curr_state_delta_stream_cache.has_any_entity_changed(
             prev_stream_id
@@ -66,10 +84,16 @@ class StateDeltasStore(SQLBaseStore):
             "get_current_state_deltas", get_current_state_deltas_txn
         )
 
-    def get_max_stream_id_in_current_state_deltas(self):
-        return self._simple_select_one_onecol(
+    def _get_max_stream_id_in_current_state_deltas_txn(self, txn):
+        return self._simple_select_one_onecol_txn(
+            txn,
             table="current_state_delta_stream",
             keyvalues={},
             retcol="COALESCE(MAX(stream_id), -1)",
-            desc="get_max_stream_id_in_current_state_deltas",
+        )
+
+    def get_max_stream_id_in_current_state_deltas(self):
+        return self.runInteraction(
+            "get_max_stream_id_in_current_state_deltas",
+            self._get_max_stream_id_in_current_state_deltas_txn,
         )
diff --git a/synapse/storage/stats.py b/synapse/storage/stats.py
new file mode 100644
index 0000000000..ff266b09b0
--- /dev/null
+++ b/synapse/storage/stats.py
@@ -0,0 +1,468 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018, 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, Membership
+from synapse.storage.prepare_database import get_statements
+from synapse.storage.state_deltas import StateDeltasStore
+from synapse.util.caches.descriptors import cached
+
+logger = logging.getLogger(__name__)
+
+# these fields track absolutes (e.g. total number of rooms on the server)
+ABSOLUTE_STATS_FIELDS = {
+    "room": (
+        "current_state_events",
+        "joined_members",
+        "invited_members",
+        "left_members",
+        "banned_members",
+        "state_events",
+    ),
+    "user": ("public_rooms", "private_rooms"),
+}
+
+TYPE_TO_ROOM = {"room": ("room_stats", "room_id"), "user": ("user_stats", "user_id")}
+
+TEMP_TABLE = "_temp_populate_stats"
+
+
+class StatsStore(StateDeltasStore):
+    def __init__(self, db_conn, hs):
+        super(StatsStore, self).__init__(db_conn, hs)
+
+        self.server_name = hs.hostname
+        self.clock = self.hs.get_clock()
+        self.stats_enabled = hs.config.stats_enabled
+        self.stats_bucket_size = hs.config.stats_bucket_size
+
+        self.register_background_update_handler(
+            "populate_stats_createtables", self._populate_stats_createtables
+        )
+        self.register_background_update_handler(
+            "populate_stats_process_rooms", self._populate_stats_process_rooms
+        )
+        self.register_background_update_handler(
+            "populate_stats_cleanup", self._populate_stats_cleanup
+        )
+
+    @defer.inlineCallbacks
+    def _populate_stats_createtables(self, progress, batch_size):
+
+        if not self.stats_enabled:
+            yield self._end_background_update("populate_stats_createtables")
+            defer.returnValue(1)
+
+        # Get all the rooms that we want to process.
+        def _make_staging_area(txn):
+            # Create the temporary tables
+            stmts = get_statements("""
+                -- We just recreate the table, we'll be reinserting the
+                -- correct entries again later anyway.
+                DROP TABLE IF EXISTS {temp}_rooms;
+
+                CREATE TABLE IF NOT EXISTS {temp}_rooms(
+                    room_id TEXT NOT NULL,
+                    events BIGINT NOT NULL
+                );
+
+                CREATE INDEX {temp}_rooms_events
+                    ON {temp}_rooms(events);
+                CREATE INDEX {temp}_rooms_id
+                    ON {temp}_rooms(room_id);
+            """.format(temp=TEMP_TABLE).splitlines())
+
+            for statement in stmts:
+                txn.execute(statement)
+
+            sql = (
+                "CREATE TABLE IF NOT EXISTS "
+                + TEMP_TABLE
+                + "_position(position TEXT NOT NULL)"
+            )
+            txn.execute(sql)
+
+            # Get rooms we want to process from the database, only adding
+            # those that we haven't (i.e. those not in room_stats_earliest_token)
+            sql = """
+                INSERT INTO %s_rooms (room_id, events)
+                SELECT c.room_id, count(*) FROM current_state_events AS c
+                LEFT JOIN room_stats_earliest_token AS t USING (room_id)
+                WHERE t.room_id IS NULL
+                GROUP BY c.room_id
+            """ % (TEMP_TABLE,)
+            txn.execute(sql)
+
+        new_pos = yield self.get_max_stream_id_in_current_state_deltas()
+        yield self.runInteraction("populate_stats_temp_build", _make_staging_area)
+        yield self._simple_insert(TEMP_TABLE + "_position", {"position": new_pos})
+        self.get_earliest_token_for_room_stats.invalidate_all()
+
+        yield self._end_background_update("populate_stats_createtables")
+        defer.returnValue(1)
+
+    @defer.inlineCallbacks
+    def _populate_stats_cleanup(self, progress, batch_size):
+        """
+        Update the user directory stream position, then clean up the old tables.
+        """
+        if not self.stats_enabled:
+            yield self._end_background_update("populate_stats_cleanup")
+            defer.returnValue(1)
+
+        position = yield self._simple_select_one_onecol(
+            TEMP_TABLE + "_position", None, "position"
+        )
+        yield self.update_stats_stream_pos(position)
+
+        def _delete_staging_area(txn):
+            txn.execute("DROP TABLE IF EXISTS " + TEMP_TABLE + "_rooms")
+            txn.execute("DROP TABLE IF EXISTS " + TEMP_TABLE + "_position")
+
+        yield self.runInteraction("populate_stats_cleanup", _delete_staging_area)
+
+        yield self._end_background_update("populate_stats_cleanup")
+        defer.returnValue(1)
+
+    @defer.inlineCallbacks
+    def _populate_stats_process_rooms(self, progress, batch_size):
+
+        if not self.stats_enabled:
+            yield self._end_background_update("populate_stats_process_rooms")
+            defer.returnValue(1)
+
+        # If we don't have progress filed, delete everything.
+        if not progress:
+            yield self.delete_all_stats()
+
+        def _get_next_batch(txn):
+            # Only fetch 250 rooms, so we don't fetch too many at once, even
+            # if those 250 rooms have less than batch_size state events.
+            sql = """
+                SELECT room_id, events FROM %s_rooms
+                ORDER BY events DESC
+                LIMIT 250
+            """ % (
+                TEMP_TABLE,
+            )
+            txn.execute(sql)
+            rooms_to_work_on = txn.fetchall()
+
+            if not rooms_to_work_on:
+                return None
+
+            # Get how many are left to process, so we can give status on how
+            # far we are in processing
+            txn.execute("SELECT COUNT(*) FROM " + TEMP_TABLE + "_rooms")
+            progress["remaining"] = txn.fetchone()[0]
+
+            return rooms_to_work_on
+
+        rooms_to_work_on = yield self.runInteraction(
+            "populate_stats_temp_read", _get_next_batch
+        )
+
+        # No more rooms -- complete the transaction.
+        if not rooms_to_work_on:
+            yield self._end_background_update("populate_stats_process_rooms")
+            defer.returnValue(1)
+
+        logger.info(
+            "Processing the next %d rooms of %d remaining",
+            len(rooms_to_work_on), progress["remaining"],
+        )
+
+        # Number of state events we've processed by going through each room
+        processed_event_count = 0
+
+        for room_id, event_count in rooms_to_work_on:
+
+            current_state_ids = yield self.get_current_state_ids(room_id)
+
+            join_rules_id = current_state_ids.get((EventTypes.JoinRules, ""))
+            history_visibility_id = current_state_ids.get(
+                (EventTypes.RoomHistoryVisibility, "")
+            )
+            encryption_id = current_state_ids.get((EventTypes.RoomEncryption, ""))
+            name_id = current_state_ids.get((EventTypes.Name, ""))
+            topic_id = current_state_ids.get((EventTypes.Topic, ""))
+            avatar_id = current_state_ids.get((EventTypes.RoomAvatar, ""))
+            canonical_alias_id = current_state_ids.get((EventTypes.CanonicalAlias, ""))
+
+            state_events = yield self.get_events([
+                join_rules_id, history_visibility_id, encryption_id, name_id,
+                topic_id, avatar_id, canonical_alias_id,
+            ])
+
+            def _get_or_none(event_id, arg):
+                event = state_events.get(event_id)
+                if event:
+                    return event.content.get(arg)
+                return None
+
+            yield self.update_room_state(
+                room_id,
+                {
+                    "join_rules": _get_or_none(join_rules_id, "join_rule"),
+                    "history_visibility": _get_or_none(
+                        history_visibility_id, "history_visibility"
+                    ),
+                    "encryption": _get_or_none(encryption_id, "algorithm"),
+                    "name": _get_or_none(name_id, "name"),
+                    "topic": _get_or_none(topic_id, "topic"),
+                    "avatar": _get_or_none(avatar_id, "url"),
+                    "canonical_alias": _get_or_none(canonical_alias_id, "alias"),
+                },
+            )
+
+            now = self.hs.get_reactor().seconds()
+
+            # quantise time to the nearest bucket
+            now = (now // self.stats_bucket_size) * self.stats_bucket_size
+
+            def _fetch_data(txn):
+
+                # Get the current token of the room
+                current_token = self._get_max_stream_id_in_current_state_deltas_txn(txn)
+
+                current_state_events = len(current_state_ids)
+
+                membership_counts = self._get_user_counts_in_room_txn(txn, room_id)
+
+                total_state_events = self._get_total_state_event_counts_txn(
+                    txn, room_id
+                )
+
+                self._update_stats_txn(
+                    txn,
+                    "room",
+                    room_id,
+                    now,
+                    {
+                        "bucket_size": self.stats_bucket_size,
+                        "current_state_events": current_state_events,
+                        "joined_members": membership_counts.get(Membership.JOIN, 0),
+                        "invited_members": membership_counts.get(Membership.INVITE, 0),
+                        "left_members": membership_counts.get(Membership.LEAVE, 0),
+                        "banned_members": membership_counts.get(Membership.BAN, 0),
+                        "state_events": total_state_events,
+                    },
+                )
+                self._simple_insert_txn(
+                    txn,
+                    "room_stats_earliest_token",
+                    {"room_id": room_id, "token": current_token},
+                )
+
+                # We've finished a room. Delete it from the table.
+                self._simple_delete_one_txn(
+                    txn, TEMP_TABLE + "_rooms", {"room_id": room_id},
+                )
+
+            yield self.runInteraction("update_room_stats", _fetch_data)
+
+            # Update the remaining counter.
+            progress["remaining"] -= 1
+            yield self.runInteraction(
+                "populate_stats",
+                self._background_update_progress_txn,
+                "populate_stats_process_rooms",
+                progress,
+            )
+
+            processed_event_count += event_count
+
+            if processed_event_count > batch_size:
+                # Don't process any more rooms, we've hit our batch size.
+                defer.returnValue(processed_event_count)
+
+        defer.returnValue(processed_event_count)
+
+    def delete_all_stats(self):
+        """
+        Delete all statistics records.
+        """
+
+        def _delete_all_stats_txn(txn):
+            txn.execute("DELETE FROM room_state")
+            txn.execute("DELETE FROM room_stats")
+            txn.execute("DELETE FROM room_stats_earliest_token")
+            txn.execute("DELETE FROM user_stats")
+
+        return self.runInteraction("delete_all_stats", _delete_all_stats_txn)
+
+    def get_stats_stream_pos(self):
+        return self._simple_select_one_onecol(
+            table="stats_stream_pos",
+            keyvalues={},
+            retcol="stream_id",
+            desc="stats_stream_pos",
+        )
+
+    def update_stats_stream_pos(self, stream_id):
+        return self._simple_update_one(
+            table="stats_stream_pos",
+            keyvalues={},
+            updatevalues={"stream_id": stream_id},
+            desc="update_stats_stream_pos",
+        )
+
+    def update_room_state(self, room_id, fields):
+        """
+        Args:
+            room_id (str)
+            fields (dict[str:Any])
+        """
+
+        # For whatever reason some of the fields may contain null bytes, which
+        # postgres isn't a fan of, so we replace those fields with null.
+        for col in (
+            "join_rules",
+            "history_visibility",
+            "encryption",
+            "name",
+            "topic",
+            "avatar",
+            "canonical_alias"
+        ):
+            field = fields.get(col)
+            if field and "\0" in field:
+                fields[col] = None
+
+        return self._simple_upsert(
+            table="room_state",
+            keyvalues={"room_id": room_id},
+            values=fields,
+            desc="update_room_state",
+        )
+
+    def get_deltas_for_room(self, room_id, start, size=100):
+        """
+        Get statistics deltas for a given room.
+
+        Args:
+            room_id (str)
+            start (int): Pagination start. Number of entries, not timestamp.
+            size (int): How many entries to return.
+
+        Returns:
+            Deferred[list[dict]], where the dict has the keys of
+            ABSOLUTE_STATS_FIELDS["room"] and "ts".
+        """
+        return self._simple_select_list_paginate(
+            "room_stats",
+            {"room_id": room_id},
+            "ts",
+            start,
+            size,
+            retcols=(list(ABSOLUTE_STATS_FIELDS["room"]) + ["ts"]),
+            order_direction="DESC",
+        )
+
+    def get_all_room_state(self):
+        return self._simple_select_list(
+            "room_state", None, retcols=("name", "topic", "canonical_alias")
+        )
+
+    @cached()
+    def get_earliest_token_for_room_stats(self, room_id):
+        """
+        Fetch the "earliest token". This is used by the room stats delta
+        processor to ignore deltas that have been processed between the
+        start of the background task and any particular room's stats
+        being calculated.
+
+        Returns:
+            Deferred[int]
+        """
+        return self._simple_select_one_onecol(
+            "room_stats_earliest_token",
+            {"room_id": room_id},
+            retcol="token",
+            allow_none=True,
+        )
+
+    def update_stats(self, stats_type, stats_id, ts, fields):
+        table, id_col = TYPE_TO_ROOM[stats_type]
+        return self._simple_upsert(
+            table=table,
+            keyvalues={id_col: stats_id, "ts": ts},
+            values=fields,
+            desc="update_stats",
+        )
+
+    def _update_stats_txn(self, txn, stats_type, stats_id, ts, fields):
+        table, id_col = TYPE_TO_ROOM[stats_type]
+        return self._simple_upsert_txn(
+            txn, table=table, keyvalues={id_col: stats_id, "ts": ts}, values=fields
+        )
+
+    def update_stats_delta(self, ts, stats_type, stats_id, field, value):
+        def _update_stats_delta(txn):
+            table, id_col = TYPE_TO_ROOM[stats_type]
+
+            sql = (
+                "SELECT * FROM %s"
+                " WHERE %s=? and ts=("
+                "  SELECT MAX(ts) FROM %s"
+                "  WHERE %s=?"
+                ")"
+            ) % (table, id_col, table, id_col)
+            txn.execute(sql, (stats_id, stats_id))
+            rows = self.cursor_to_dict(txn)
+            if len(rows) == 0:
+                # silently skip as we don't have anything to apply a delta to yet.
+                # this tries to minimise any race between the initial sync and
+                # subsequent deltas arriving.
+                return
+
+            current_ts = ts
+            latest_ts = rows[0]["ts"]
+            if current_ts < latest_ts:
+                # This one is in the past, but we're just encountering it now.
+                # Mark it as part of the current bucket.
+                current_ts = latest_ts
+            elif ts != latest_ts:
+                # we have to copy our absolute counters over to the new entry.
+                values = {
+                    key: rows[0][key] for key in ABSOLUTE_STATS_FIELDS[stats_type]
+                }
+                values[id_col] = stats_id
+                values["ts"] = ts
+                values["bucket_size"] = self.stats_bucket_size
+
+                self._simple_insert_txn(txn, table=table, values=values)
+
+            # actually update the new value
+            if stats_type in ABSOLUTE_STATS_FIELDS[stats_type]:
+                self._simple_update_txn(
+                    txn,
+                    table=table,
+                    keyvalues={id_col: stats_id, "ts": current_ts},
+                    updatevalues={field: value},
+                )
+            else:
+                sql = ("UPDATE %s SET %s=%s+? WHERE %s=? AND ts=?") % (
+                    table,
+                    field,
+                    field,
+                    id_col,
+                )
+                txn.execute(sql, (value, stats_id, current_ts))
+
+        return self.runInteraction("update_stats_delta", _update_stats_delta)
diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py
index 9cd1e0f9fe..6f7f65d96b 100644
--- a/synapse/storage/stream.py
+++ b/synapse/storage/stream.py
@@ -64,59 +64,135 @@ _EventDictReturn = namedtuple(
 )
 
 
-def lower_bound(token, engine, inclusive=False):
-    inclusive = "=" if inclusive else ""
-    if token.topological is None:
-        return "(%d <%s %s)" % (token.stream, inclusive, "stream_ordering")
-    else:
-        if isinstance(engine, PostgresEngine):
-            # Postgres doesn't optimise ``(x < a) OR (x=a AND y<b)`` as well
-            # as it optimises ``(x,y) < (a,b)`` on multicolumn indexes. So we
-            # use the later form when running against postgres.
-            return "((%d,%d) <%s (%s,%s))" % (
-                token.topological,
-                token.stream,
-                inclusive,
-                "topological_ordering",
-                "stream_ordering",
+def generate_pagination_where_clause(
+    direction, column_names, from_token, to_token, engine,
+):
+    """Creates an SQL expression to bound the columns by the pagination
+    tokens.
+
+    For example creates an SQL expression like:
+
+        (6, 7) >= (topological_ordering, stream_ordering)
+        AND (5, 3) < (topological_ordering, stream_ordering)
+
+    would be generated for dir=b, from_token=(6, 7) and to_token=(5, 3).
+
+    Note that tokens are considered to be after the row they are in, e.g. if
+    a row A has a token T, then we consider A to be before T. This convention
+    is important when figuring out inequalities for the generated SQL, and
+    produces the following result:
+        - If paginating forwards then we exclude any rows matching the from
+          token, but include those that match the to token.
+        - If paginating backwards then we include any rows matching the from
+          token, but include those that match the to token.
+
+    Args:
+        direction (str): Whether we're paginating backwards("b") or
+            forwards ("f").
+        column_names (tuple[str, str]): The column names to bound. Must *not*
+            be user defined as these get inserted directly into the SQL
+            statement without escapes.
+        from_token (tuple[int, int]|None): The start point for the pagination.
+            This is an exclusive minimum bound if direction is "f", and an
+            inclusive maximum bound if direction is "b".
+        to_token (tuple[int, int]|None): The endpoint point for the pagination.
+            This is an inclusive maximum bound if direction is "f", and an
+            exclusive minimum bound if direction is "b".
+        engine: The database engine to generate the clauses for
+
+    Returns:
+        str: The sql expression
+    """
+    assert direction in ("b", "f")
+
+    where_clause = []
+    if from_token:
+        where_clause.append(
+            _make_generic_sql_bound(
+                bound=">=" if direction == "b" else "<",
+                column_names=column_names,
+                values=from_token,
+                engine=engine,
             )
-        return "(%d < %s OR (%d = %s AND %d <%s %s))" % (
-            token.topological,
-            "topological_ordering",
-            token.topological,
-            "topological_ordering",
-            token.stream,
-            inclusive,
-            "stream_ordering",
         )
 
-
-def upper_bound(token, engine, inclusive=True):
-    inclusive = "=" if inclusive else ""
-    if token.topological is None:
-        return "(%d >%s %s)" % (token.stream, inclusive, "stream_ordering")
-    else:
-        if isinstance(engine, PostgresEngine):
-            # Postgres doesn't optimise ``(x > a) OR (x=a AND y>b)`` as well
-            # as it optimises ``(x,y) > (a,b)`` on multicolumn indexes. So we
-            # use the later form when running against postgres.
-            return "((%d,%d) >%s (%s,%s))" % (
-                token.topological,
-                token.stream,
-                inclusive,
-                "topological_ordering",
-                "stream_ordering",
+    if to_token:
+        where_clause.append(
+            _make_generic_sql_bound(
+                bound="<" if direction == "b" else ">=",
+                column_names=column_names,
+                values=to_token,
+                engine=engine,
             )
-        return "(%d > %s OR (%d = %s AND %d >%s %s))" % (
-            token.topological,
-            "topological_ordering",
-            token.topological,
-            "topological_ordering",
-            token.stream,
-            inclusive,
-            "stream_ordering",
         )
 
+    return " AND ".join(where_clause)
+
+
+def _make_generic_sql_bound(bound, column_names, values, engine):
+    """Create an SQL expression that bounds the given column names by the
+    values, e.g. create the equivalent of `(1, 2) < (col1, col2)`.
+
+    Only works with two columns.
+
+    Older versions of SQLite don't support that syntax so we have to expand it
+    out manually.
+
+    Args:
+        bound (str): The comparison operator to use. One of ">", "<", ">=",
+            "<=", where the values are on the left and columns on the right.
+        names (tuple[str, str]): The column names. Must *not* be user defined
+            as these get inserted directly into the SQL statement without
+            escapes.
+        values (tuple[int|None, int]): The values to bound the columns by. If
+            the first value is None then only creates a bound on the second
+            column.
+        engine: The database engine to generate the SQL for
+
+    Returns:
+        str
+    """
+
+    assert(bound in (">", "<", ">=", "<="))
+
+    name1, name2 = column_names
+    val1, val2 = values
+
+    if val1 is None:
+        val2 = int(val2)
+        return "(%d %s %s)" % (val2, bound, name2)
+
+    val1 = int(val1)
+    val2 = int(val2)
+
+    if isinstance(engine, PostgresEngine):
+        # Postgres doesn't optimise ``(x < a) OR (x=a AND y<b)`` as well
+        # as it optimises ``(x,y) < (a,b)`` on multicolumn indexes. So we
+        # use the later form when running against postgres.
+        return "((%d,%d) %s (%s,%s))" % (
+            val1, val2,
+            bound,
+            name1, name2,
+        )
+
+    # We want to generate queries of e.g. the form:
+    #
+    #   (val1 < name1 OR (val1 = name1 AND val2 <= name2))
+    #
+    # which is equivalent to (val1, val2) < (name1, name2)
+
+    return """(
+        {val1:d} {strict_bound} {name1}
+        OR ({val1:d} = {name1} AND {val2:d} {bound} {name2})
+    )""".format(
+        name1=name1,
+        val1=val1,
+        name2=name2,
+        val2=val2,
+        strict_bound=bound[0],  # The first bound must always be strict equality here
+        bound=bound,
+    )
+
 
 def filter_to_clause(event_filter):
     # NB: This may create SQL clauses that don't optimise well (and we don't
@@ -319,7 +395,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
 
         rows = yield self.runInteraction("get_room_events_stream_for_room", f)
 
-        ret = yield self._get_events([r.event_id for r in rows], get_prev_content=True)
+        ret = yield self.get_events_as_list([
+            r.event_id for r in rows], get_prev_content=True,
+        )
 
         self._set_before_and_after(ret, rows, topo_order=from_id is None)
 
@@ -367,7 +445,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
 
         rows = yield self.runInteraction("get_membership_changes_for_user", f)
 
-        ret = yield self._get_events([r.event_id for r in rows], get_prev_content=True)
+        ret = yield self.get_events_as_list(
+            [r.event_id for r in rows], get_prev_content=True,
+        )
 
         self._set_before_and_after(ret, rows, topo_order=False)
 
@@ -394,7 +474,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
         )
 
         logger.debug("stream before")
-        events = yield self._get_events(
+        events = yield self.get_events_as_list(
             [r.event_id for r in rows], get_prev_content=True
         )
         logger.debug("stream after")
@@ -512,8 +592,18 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
         )
 
     def get_max_topological_token(self, room_id, stream_key):
+        """Get the max topological token in a room before the given stream
+        ordering.
+
+        Args:
+            room_id (str)
+            stream_key (int)
+
+        Returns:
+            Deferred[int]
+        """
         sql = (
-            "SELECT max(topological_ordering) FROM events"
+            "SELECT coalesce(max(topological_ordering), 0) FROM events"
             " WHERE room_id = ? AND stream_ordering < ?"
         )
         return self._execute(
@@ -580,11 +670,11 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
             event_filter,
         )
 
-        events_before = yield self._get_events(
+        events_before = yield self.get_events_as_list(
             [e for e in results["before"]["event_ids"]], get_prev_content=True
         )
 
-        events_after = yield self._get_events(
+        events_after = yield self.get_events_as_list(
             [e for e in results["after"]["event_ids"]], get_prev_content=True
         )
 
@@ -697,7 +787,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
             "get_all_new_events_stream", get_all_new_events_stream_txn
         )
 
-        events = yield self._get_events(event_ids)
+        events = yield self.get_events_as_list(event_ids)
 
         defer.returnValue((upper_bound, events))
 
@@ -758,20 +848,16 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
         args = [False, room_id]
         if direction == 'b':
             order = "DESC"
-            bounds = upper_bound(from_token, self.database_engine)
-            if to_token:
-                bounds = "%s AND %s" % (
-                    bounds,
-                    lower_bound(to_token, self.database_engine),
-                )
         else:
             order = "ASC"
-            bounds = lower_bound(from_token, self.database_engine)
-            if to_token:
-                bounds = "%s AND %s" % (
-                    bounds,
-                    upper_bound(to_token, self.database_engine),
-                )
+
+        bounds = generate_pagination_where_clause(
+            direction=direction,
+            column_names=("topological_ordering", "stream_ordering"),
+            from_token=from_token,
+            to_token=to_token,
+            engine=self.database_engine,
+        )
 
         filter_clause, filter_args = filter_to_clause(event_filter)
 
@@ -849,7 +935,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
             event_filter,
         )
 
-        events = yield self._get_events(
+        events = yield self.get_events_as_list(
             [r.event_id for r in rows], get_prev_content=True
         )
 
diff --git a/synapse/util/async_helpers.py b/synapse/util/async_helpers.py
index f0e4a0e10c..7253ba120f 100644
--- a/synapse/util/async_helpers.py
+++ b/synapse/util/async_helpers.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -156,6 +156,25 @@ def concurrently_execute(func, args, limit):
     ], consumeErrors=True)).addErrback(unwrapFirstError)
 
 
+def yieldable_gather_results(func, iter, *args, **kwargs):
+    """Executes the function with each argument concurrently.
+
+    Args:
+        func (func): Function to execute that returns a Deferred
+        iter (iter): An iterable that yields items that get passed as the first
+            argument to the function
+        *args: Arguments to be passed to each call to func
+
+    Returns
+        Deferred[list]: Resolved when all functions have been invoked, or errors if
+        one of the function calls fails.
+    """
+    return logcontext.make_deferred_yieldable(defer.gatherResults([
+        run_in_background(func, item, *args, **kwargs)
+        for item in iter
+    ], consumeErrors=True)).addErrback(unwrapFirstError)
+
+
 class Linearizer(object):
     """Limits concurrent access to resources based on a key. Useful to ensure
     only a few things happen at a time on a given resource.
diff --git a/synapse/util/distributor.py b/synapse/util/distributor.py
index 194da87639..e14c8bdfda 100644
--- a/synapse/util/distributor.py
+++ b/synapse/util/distributor.py
@@ -27,6 +27,7 @@ def user_left_room(distributor, user, room_id):
     distributor.fire("user_left_room", user=user, room_id=room_id)
 
 
+# XXX: this is no longer used. We should probably kill it.
 def user_joined_room(distributor, user, room_id):
     distributor.fire("user_joined_room", user=user, room_id=room_id)
 
diff --git a/synapse/util/logcontext.py b/synapse/util/logcontext.py
index 311b49e18a..fe412355d8 100644
--- a/synapse/util/logcontext.py
+++ b/synapse/util/logcontext.py
@@ -226,6 +226,8 @@ class LoggingContext(object):
             self.request = request
 
     def __str__(self):
+        if self.request:
+            return str(self.request)
         return "%s@%x" % (self.name, id(self))
 
     @classmethod
@@ -274,12 +276,10 @@ class LoggingContext(object):
         current = self.set_current_context(self.previous_context)
         if current is not self:
             if current is self.sentinel:
-                logger.warn("Expected logging context %s has been lost", self)
+                logger.warning("Expected logging context %s was lost", self)
             else:
-                logger.warn(
-                    "Current logging context %s is not expected context %s",
-                    current,
-                    self
+                logger.warning(
+                    "Expected logging context %s but found %s", self, current
                 )
         self.previous_context = None
         self.alive = False
@@ -433,10 +433,14 @@ class PreserveLoggingContext(object):
         context = LoggingContext.set_current_context(self.current_context)
 
         if context != self.new_context:
-            logger.warn(
-                "Unexpected logging context: %s is not %s",
-                context, self.new_context,
-            )
+            if context is LoggingContext.sentinel:
+                logger.warning("Expected logging context %s was lost", self.new_context)
+            else:
+                logger.warning(
+                    "Expected logging context %s but found %s",
+                    self.new_context,
+                    context,
+                )
 
         if self.current_context is not LoggingContext.sentinel:
             if not self.current_context.alive:
diff --git a/synapse/util/manhole.py b/synapse/util/manhole.py
index 9cb7e9c9ab..628a2962d9 100644
--- a/synapse/util/manhole.py
+++ b/synapse/util/manhole.py
@@ -1,4 +1,5 @@
 # Copyright 2016 OpenMarket Ltd
+# Copyright 2019 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -11,10 +12,12 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import sys
+import traceback
 
 from twisted.conch import manhole_ssh
 from twisted.conch.insults import insults
-from twisted.conch.manhole import ColoredManhole
+from twisted.conch.manhole import ColoredManhole, ManholeInterpreter
 from twisted.conch.ssh.keys import Key
 from twisted.cred import checkers, portal
 
@@ -79,7 +82,7 @@ def manhole(username, password, globals):
 
     rlm = manhole_ssh.TerminalRealm()
     rlm.chainedProtocolFactory = lambda: insults.ServerProtocol(
-        ColoredManhole,
+        SynapseManhole,
         dict(globals, __name__="__console__")
     )
 
@@ -88,3 +91,55 @@ def manhole(username, password, globals):
     factory.privateKeys[b'ssh-rsa'] = Key.fromString(PRIVATE_KEY)
 
     return factory
+
+
+class SynapseManhole(ColoredManhole):
+    """Overrides connectionMade to create our own ManholeInterpreter"""
+    def connectionMade(self):
+        super(SynapseManhole, self).connectionMade()
+
+        # replace the manhole interpreter with our own impl
+        self.interpreter = SynapseManholeInterpreter(self, self.namespace)
+
+        # this would also be a good place to add more keyHandlers.
+
+
+class SynapseManholeInterpreter(ManholeInterpreter):
+    def showsyntaxerror(self, filename=None):
+        """Display the syntax error that just occurred.
+
+        Overrides the base implementation, ignoring sys.excepthook. We always want
+        any syntax errors to be sent to the terminal, rather than sentry.
+        """
+        type, value, tb = sys.exc_info()
+        sys.last_type = type
+        sys.last_value = value
+        sys.last_traceback = tb
+        if filename and type is SyntaxError:
+            # Work hard to stuff the correct filename in the exception
+            try:
+                msg, (dummy_filename, lineno, offset, line) = value.args
+            except ValueError:
+                # Not the format we expect; leave it alone
+                pass
+            else:
+                # Stuff in the right filename
+                value = SyntaxError(msg, (filename, lineno, offset, line))
+                sys.last_value = value
+        lines = traceback.format_exception_only(type, value)
+        self.write(''.join(lines))
+
+    def showtraceback(self):
+        """Display the exception that just occurred.
+
+        Overrides the base implementation, ignoring sys.excepthook. We always want
+        any syntax errors to be sent to the terminal, rather than sentry.
+        """
+        sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
+        sys.last_traceback = last_tb
+        try:
+            # We remove the first stack item because it is our own code.
+            lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next)
+            self.write(''.join(lines))
+        finally:
+            last_tb = ei = None
diff --git a/synapse/util/ratelimitutils.py b/synapse/util/ratelimitutils.py
index 7deb38f2a7..b146d137f4 100644
--- a/synapse/util/ratelimitutils.py
+++ b/synapse/util/ratelimitutils.py
@@ -30,31 +30,14 @@ logger = logging.getLogger(__name__)
 
 
 class FederationRateLimiter(object):
-    def __init__(self, clock, window_size, sleep_limit, sleep_msec,
-                 reject_limit, concurrent_requests):
+    def __init__(self, clock, config):
         """
         Args:
             clock (Clock)
-            window_size (int): The window size in milliseconds.
-            sleep_limit (int): The number of requests received in the last
-                `window_size` milliseconds before we artificially start
-                delaying processing of requests.
-            sleep_msec (int): The number of milliseconds to delay processing
-                of incoming requests by.
-            reject_limit (int): The maximum number of requests that are can be
-                queued for processing before we start rejecting requests with
-                a 429 Too Many Requests response.
-            concurrent_requests (int): The number of concurrent requests to
-                process.
+            config (FederationRateLimitConfig)
         """
         self.clock = clock
-
-        self.window_size = window_size
-        self.sleep_limit = sleep_limit
-        self.sleep_msec = sleep_msec
-        self.reject_limit = reject_limit
-        self.concurrent_requests = concurrent_requests
-
+        self._config = config
         self.ratelimiters = {}
 
     def ratelimit(self, host):
@@ -76,25 +59,25 @@ class FederationRateLimiter(object):
             host,
             _PerHostRatelimiter(
                 clock=self.clock,
-                window_size=self.window_size,
-                sleep_limit=self.sleep_limit,
-                sleep_msec=self.sleep_msec,
-                reject_limit=self.reject_limit,
-                concurrent_requests=self.concurrent_requests,
+                config=self._config,
             )
         ).ratelimit()
 
 
 class _PerHostRatelimiter(object):
-    def __init__(self, clock, window_size, sleep_limit, sleep_msec,
-                 reject_limit, concurrent_requests):
+    def __init__(self, clock, config):
+        """
+        Args:
+            clock (Clock)
+            config (FederationRateLimitConfig)
+        """
         self.clock = clock
 
-        self.window_size = window_size
-        self.sleep_limit = sleep_limit
-        self.sleep_sec = sleep_msec / 1000.0
-        self.reject_limit = reject_limit
-        self.concurrent_requests = concurrent_requests
+        self.window_size = config.window_size
+        self.sleep_limit = config.sleep_limit
+        self.sleep_sec = config.sleep_delay / 1000.0
+        self.reject_limit = config.reject_limit
+        self.concurrent_requests = config.concurrent
 
         # request_id objects for requests which have been slept
         self.sleeping_requests = set()
diff --git a/synapse/util/retryutils.py b/synapse/util/retryutils.py
index 26cce7d197..1a77456498 100644
--- a/synapse/util/retryutils.py
+++ b/synapse/util/retryutils.py
@@ -46,8 +46,7 @@ class NotRetryingDestination(Exception):
 
 
 @defer.inlineCallbacks
-def get_retry_limiter(destination, clock, store, ignore_backoff=False,
-                      **kwargs):
+def get_retry_limiter(destination, clock, store, ignore_backoff=False, **kwargs):
     """For a given destination check if we have previously failed to
     send a request there and are waiting before retrying the destination.
     If we are not ready to retry the destination, this will raise a
@@ -60,8 +59,7 @@ def get_retry_limiter(destination, clock, store, ignore_backoff=False,
         clock (synapse.util.clock): timing source
         store (synapse.storage.transactions.TransactionStore): datastore
         ignore_backoff (bool): true to ignore the historical backoff data and
-            try the request anyway. We will still update the next
-            retry_interval on success/failure.
+            try the request anyway. We will still reset the retry_interval on success.
 
     Example usage:
 
@@ -75,13 +73,12 @@ def get_retry_limiter(destination, clock, store, ignore_backoff=False,
     """
     retry_last_ts, retry_interval = (0, 0)
 
-    retry_timings = yield store.get_destination_retry_timings(
-        destination
-    )
+    retry_timings = yield store.get_destination_retry_timings(destination)
 
     if retry_timings:
         retry_last_ts, retry_interval = (
-            retry_timings["retry_last_ts"], retry_timings["retry_interval"]
+            retry_timings["retry_last_ts"],
+            retry_timings["retry_interval"],
         )
 
         now = int(clock.time_msec())
@@ -93,22 +90,36 @@ def get_retry_limiter(destination, clock, store, ignore_backoff=False,
                 destination=destination,
             )
 
+    # if we are ignoring the backoff data, we should also not increment the backoff
+    # when we get another failure - otherwise a server can very quickly reach the
+    # maximum backoff even though it might only have been down briefly
+    backoff_on_failure = not ignore_backoff
+
     defer.returnValue(
         RetryDestinationLimiter(
             destination,
             clock,
             store,
             retry_interval,
+            backoff_on_failure=backoff_on_failure,
             **kwargs
         )
     )
 
 
 class RetryDestinationLimiter(object):
-    def __init__(self, destination, clock, store, retry_interval,
-                 min_retry_interval=10 * 60 * 1000,
-                 max_retry_interval=24 * 60 * 60 * 1000,
-                 multiplier_retry_interval=5, backoff_on_404=False):
+    def __init__(
+        self,
+        destination,
+        clock,
+        store,
+        retry_interval,
+        min_retry_interval=10 * 60 * 1000,
+        max_retry_interval=24 * 60 * 60 * 1000,
+        multiplier_retry_interval=5,
+        backoff_on_404=False,
+        backoff_on_failure=True,
+    ):
         """Marks the destination as "down" if an exception is thrown in the
         context, except for CodeMessageException with code < 500.
 
@@ -128,6 +139,9 @@ class RetryDestinationLimiter(object):
             multiplier_retry_interval (int): The multiplier to use to increase
                 the retry interval after a failed request.
             backoff_on_404 (bool): Back off if we get a 404
+
+            backoff_on_failure (bool): set to False if we should not increase the
+                retry interval on a failure.
         """
         self.clock = clock
         self.store = store
@@ -138,6 +152,7 @@ class RetryDestinationLimiter(object):
         self.max_retry_interval = max_retry_interval
         self.multiplier_retry_interval = multiplier_retry_interval
         self.backoff_on_404 = backoff_on_404
+        self.backoff_on_failure = backoff_on_failure
 
     def __enter__(self):
         pass
@@ -173,10 +188,13 @@ class RetryDestinationLimiter(object):
             if not self.retry_interval:
                 return
 
-            logger.debug("Connection to %s was successful; clearing backoff",
-                         self.destination)
+            logger.debug(
+                "Connection to %s was successful; clearing backoff", self.destination
+            )
             retry_last_ts = 0
             self.retry_interval = 0
+        elif not self.backoff_on_failure:
+            return
         else:
             # We couldn't connect.
             if self.retry_interval:
@@ -190,7 +208,10 @@ class RetryDestinationLimiter(object):
 
             logger.info(
                 "Connection to %s was unsuccessful (%s(%s)); backoff now %i",
-                self.destination, exc_type, exc_val, self.retry_interval
+                self.destination,
+                exc_type,
+                exc_val,
+                self.retry_interval,
             )
             retry_last_ts = int(self.clock.time_msec())
 
@@ -201,9 +222,7 @@ class RetryDestinationLimiter(object):
                     self.destination, retry_last_ts, self.retry_interval
                 )
             except Exception:
-                logger.exception(
-                    "Failed to store destination_retry_timings",
-                )
+                logger.exception("Failed to store destination_retry_timings")
 
         # we deliberately do this in the background.
         synapse.util.logcontext.run_in_background(store_retry_timings)
diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py
index fdcb375f95..69dffd8244 100644
--- a/synapse/util/stringutils.py
+++ b/synapse/util/stringutils.py
@@ -24,14 +24,19 @@ _string_with_symbols = (
     string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
 )
 
+# random_string and random_string_with_symbols are used for a range of things,
+# some cryptographically important, some less so. We use SystemRandom to make sure
+# we get cryptographically-secure randoms.
+rand = random.SystemRandom()
+
 
 def random_string(length):
-    return ''.join(random.choice(string.ascii_letters) for _ in range(length))
+    return ''.join(rand.choice(string.ascii_letters) for _ in range(length))
 
 
 def random_string_with_symbols(length):
     return ''.join(
-        random.choice(_string_with_symbols) for _ in range(length)
+        rand.choice(_string_with_symbols) for _ in range(length)
     )
 
 
diff --git a/synctl b/synctl
index 07a68e6d85..30d751236f 100755
--- a/synctl
+++ b/synctl
@@ -69,10 +69,14 @@ def abort(message, colour=RED, stream=sys.stderr):
     sys.exit(1)
 
 
-def start(configfile):
+def start(configfile, daemonize=True):
     write("Starting ...")
     args = SYNAPSE
-    args.extend(["--daemonize", "-c", configfile])
+
+    if daemonize:
+        args.extend(["--daemonize", "-c", configfile])
+    else:
+        args.extend(["-c", configfile])
 
     try:
         subprocess.check_call(args)
@@ -143,12 +147,21 @@ def main():
         help="start or stop all the workers in the given directory"
         " and the main synapse process",
     )
+    parser.add_argument(
+        "--no-daemonize",
+        action="store_false",
+        help="Run synapse in the foreground for debugging. "
+        "Will work only if the daemonize option is not set in the config."
+    )
 
     options = parser.parse_args()
 
     if options.worker and options.all_processes:
         write('Cannot use "--worker" with "--all-processes"', stream=sys.stderr)
         sys.exit(1)
+    if options.no_daemonize and options.all_processes:
+        write('Cannot use "--no-daemonize" with "--all-processes"', stream=sys.stderr)
+        sys.exit(1)
 
     configfile = options.configfile
 
@@ -276,7 +289,7 @@ def main():
             # Check if synapse is already running
             if os.path.exists(pidfile) and pid_running(int(open(pidfile).read())):
                 abort("synapse.app.homeserver already running")
-            start(configfile)
+            start(configfile, bool(options.no_daemonize))
 
         for worker in workers:
             env = os.environ.copy()
diff --git a/tests/__init__.py b/tests/__init__.py
index d3181f9403..f7fc502f01 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -21,4 +21,4 @@ import tests.patch_inline_callbacks
 # attempt to do the patch before we load any synapse code
 tests.patch_inline_callbacks.do_patch()
 
-util.DEFAULT_TIMEOUT_DURATION = 10
+util.DEFAULT_TIMEOUT_DURATION = 20
diff --git a/tests/api/test_filtering.py b/tests/api/test_filtering.py
index 2a7044801a..6ba623de13 100644
--- a/tests/api/test_filtering.py
+++ b/tests/api/test_filtering.py
@@ -109,7 +109,6 @@ class FilteringTestCase(unittest.TestCase):
                 "event_format": "client",
                 "event_fields": ["type", "content", "sender"],
             },
-
             # a single backslash should be permitted (though it is debatable whether
             # it should be permitted before anything other than `.`, and what that
             # actually means)
diff --git a/tests/api/test_ratelimiting.py b/tests/api/test_ratelimiting.py
index 30a255d441..dbdd427cac 100644
--- a/tests/api/test_ratelimiting.py
+++ b/tests/api/test_ratelimiting.py
@@ -10,19 +10,19 @@ class TestRatelimiter(unittest.TestCase):
             key="test_id", time_now_s=0, rate_hz=0.1, burst_count=1
         )
         self.assertTrue(allowed)
-        self.assertEquals(10., time_allowed)
+        self.assertEquals(10.0, time_allowed)
 
         allowed, time_allowed = limiter.can_do_action(
             key="test_id", time_now_s=5, rate_hz=0.1, burst_count=1
         )
         self.assertFalse(allowed)
-        self.assertEquals(10., time_allowed)
+        self.assertEquals(10.0, time_allowed)
 
         allowed, time_allowed = limiter.can_do_action(
             key="test_id", time_now_s=10, rate_hz=0.1, burst_count=1
         )
         self.assertTrue(allowed)
-        self.assertEquals(20., time_allowed)
+        self.assertEquals(20.0, time_allowed)
 
     def test_pruning(self):
         limiter = Ratelimiter()
diff --git a/tests/app/test_openid_listener.py b/tests/app/test_openid_listener.py
index 590abc1e92..48792d1480 100644
--- a/tests/app/test_openid_listener.py
+++ b/tests/app/test_openid_listener.py
@@ -25,16 +25,18 @@ from tests.unittest import HomeserverTestCase
 class FederationReaderOpenIDListenerTests(HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
         hs = self.setup_test_homeserver(
-            http_client=None, homeserverToUse=FederationReaderServer,
+            http_client=None, homeserverToUse=FederationReaderServer
         )
         return hs
 
-    @parameterized.expand([
-        (["federation"], "auth_fail"),
-        ([], "no_resource"),
-        (["openid", "federation"], "auth_fail"),
-        (["openid"], "auth_fail"),
-    ])
+    @parameterized.expand(
+        [
+            (["federation"], "auth_fail"),
+            ([], "no_resource"),
+            (["openid", "federation"], "auth_fail"),
+            (["openid"], "auth_fail"),
+        ]
+    )
     def test_openid_listener(self, names, expectation):
         """
         Test different openid listener configurations.
@@ -53,17 +55,14 @@ class FederationReaderOpenIDListenerTests(HomeserverTestCase):
         # Grab the resource from the site that was told to listen
         site = self.reactor.tcpServers[0][1]
         try:
-            self.resource = (
-                site.resource.children[b"_matrix"].children[b"federation"]
-            )
+            self.resource = site.resource.children[b"_matrix"].children[b"federation"]
         except KeyError:
             if expectation == "no_resource":
                 return
             raise
 
         request, channel = self.make_request(
-            "GET",
-            "/_matrix/federation/v1/openid/userinfo",
+            "GET", "/_matrix/federation/v1/openid/userinfo"
         )
         self.render(request)
 
@@ -74,16 +73,18 @@ class FederationReaderOpenIDListenerTests(HomeserverTestCase):
 class SynapseHomeserverOpenIDListenerTests(HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
         hs = self.setup_test_homeserver(
-            http_client=None, homeserverToUse=SynapseHomeServer,
+            http_client=None, homeserverToUse=SynapseHomeServer
         )
         return hs
 
-    @parameterized.expand([
-        (["federation"], "auth_fail"),
-        ([], "no_resource"),
-        (["openid", "federation"], "auth_fail"),
-        (["openid"], "auth_fail"),
-    ])
+    @parameterized.expand(
+        [
+            (["federation"], "auth_fail"),
+            ([], "no_resource"),
+            (["openid", "federation"], "auth_fail"),
+            (["openid"], "auth_fail"),
+        ]
+    )
     def test_openid_listener(self, names, expectation):
         """
         Test different openid listener configurations.
@@ -102,17 +103,14 @@ class SynapseHomeserverOpenIDListenerTests(HomeserverTestCase):
         # Grab the resource from the site that was told to listen
         site = self.reactor.tcpServers[0][1]
         try:
-            self.resource = (
-                site.resource.children[b"_matrix"].children[b"federation"]
-            )
+            self.resource = site.resource.children[b"_matrix"].children[b"federation"]
         except KeyError:
             if expectation == "no_resource":
                 return
             raise
 
         request, channel = self.make_request(
-            "GET",
-            "/_matrix/federation/v1/openid/userinfo",
+            "GET", "/_matrix/federation/v1/openid/userinfo"
         )
         self.render(request)
 
diff --git a/tests/config/test_generate.py b/tests/config/test_generate.py
index 795b4c298d..5017cbce85 100644
--- a/tests/config/test_generate.py
+++ b/tests/config/test_generate.py
@@ -45,13 +45,7 @@ class ConfigGenerationTestCase(unittest.TestCase):
         )
 
         self.assertSetEqual(
-            set(
-                [
-                    "homeserver.yaml",
-                    "lemurs.win.log.config",
-                    "lemurs.win.signing.key",
-                ]
-            ),
+            set(["homeserver.yaml", "lemurs.win.log.config", "lemurs.win.signing.key"]),
             set(os.listdir(self.dir)),
         )
 
diff --git a/tests/config/test_room_directory.py b/tests/config/test_room_directory.py
index 47fffcfeb2..0ec10019b3 100644
--- a/tests/config/test_room_directory.py
+++ b/tests/config/test_room_directory.py
@@ -22,7 +22,8 @@ from tests import unittest
 
 class RoomDirectoryConfigTestCase(unittest.TestCase):
     def test_alias_creation_acl(self):
-        config = yaml.safe_load("""
+        config = yaml.safe_load(
+            """
         alias_creation_rules:
             - user_id: "*bob*"
               alias: "*"
@@ -38,43 +39,49 @@ class RoomDirectoryConfigTestCase(unittest.TestCase):
               action: "allow"
 
         room_list_publication_rules: []
-        """)
+        """
+        )
 
         rd_config = RoomDirectoryConfig()
         rd_config.read_config(config)
 
-        self.assertFalse(rd_config.is_alias_creation_allowed(
-            user_id="@bob:example.com",
-            room_id="!test",
-            alias="#test:example.com",
-        ))
+        self.assertFalse(
+            rd_config.is_alias_creation_allowed(
+                user_id="@bob:example.com", room_id="!test", alias="#test:example.com"
+            )
+        )
 
-        self.assertTrue(rd_config.is_alias_creation_allowed(
-            user_id="@test:example.com",
-            room_id="!test",
-            alias="#unofficial_st:example.com",
-        ))
+        self.assertTrue(
+            rd_config.is_alias_creation_allowed(
+                user_id="@test:example.com",
+                room_id="!test",
+                alias="#unofficial_st:example.com",
+            )
+        )
 
-        self.assertTrue(rd_config.is_alias_creation_allowed(
-            user_id="@foobar:example.com",
-            room_id="!test",
-            alias="#test:example.com",
-        ))
+        self.assertTrue(
+            rd_config.is_alias_creation_allowed(
+                user_id="@foobar:example.com",
+                room_id="!test",
+                alias="#test:example.com",
+            )
+        )
 
-        self.assertTrue(rd_config.is_alias_creation_allowed(
-            user_id="@gah:example.com",
-            room_id="!test",
-            alias="#goo:example.com",
-        ))
+        self.assertTrue(
+            rd_config.is_alias_creation_allowed(
+                user_id="@gah:example.com", room_id="!test", alias="#goo:example.com"
+            )
+        )
 
-        self.assertFalse(rd_config.is_alias_creation_allowed(
-            user_id="@test:example.com",
-            room_id="!test",
-            alias="#test:example.com",
-        ))
+        self.assertFalse(
+            rd_config.is_alias_creation_allowed(
+                user_id="@test:example.com", room_id="!test", alias="#test:example.com"
+            )
+        )
 
     def test_room_publish_acl(self):
-        config = yaml.safe_load("""
+        config = yaml.safe_load(
+            """
         alias_creation_rules: []
 
         room_list_publication_rules:
@@ -92,55 +99,66 @@ class RoomDirectoryConfigTestCase(unittest.TestCase):
               action: "allow"
             - room_id: "!test-deny"
               action: "deny"
-        """)
+        """
+        )
 
         rd_config = RoomDirectoryConfig()
         rd_config.read_config(config)
 
-        self.assertFalse(rd_config.is_publishing_room_allowed(
-            user_id="@bob:example.com",
-            room_id="!test",
-            aliases=["#test:example.com"],
-        ))
+        self.assertFalse(
+            rd_config.is_publishing_room_allowed(
+                user_id="@bob:example.com",
+                room_id="!test",
+                aliases=["#test:example.com"],
+            )
+        )
 
-        self.assertTrue(rd_config.is_publishing_room_allowed(
-            user_id="@test:example.com",
-            room_id="!test",
-            aliases=["#unofficial_st:example.com"],
-        ))
+        self.assertTrue(
+            rd_config.is_publishing_room_allowed(
+                user_id="@test:example.com",
+                room_id="!test",
+                aliases=["#unofficial_st:example.com"],
+            )
+        )
 
-        self.assertTrue(rd_config.is_publishing_room_allowed(
-            user_id="@foobar:example.com",
-            room_id="!test",
-            aliases=[],
-        ))
+        self.assertTrue(
+            rd_config.is_publishing_room_allowed(
+                user_id="@foobar:example.com", room_id="!test", aliases=[]
+            )
+        )
 
-        self.assertTrue(rd_config.is_publishing_room_allowed(
-            user_id="@gah:example.com",
-            room_id="!test",
-            aliases=["#goo:example.com"],
-        ))
+        self.assertTrue(
+            rd_config.is_publishing_room_allowed(
+                user_id="@gah:example.com",
+                room_id="!test",
+                aliases=["#goo:example.com"],
+            )
+        )
 
-        self.assertFalse(rd_config.is_publishing_room_allowed(
-            user_id="@test:example.com",
-            room_id="!test",
-            aliases=["#test:example.com"],
-        ))
+        self.assertFalse(
+            rd_config.is_publishing_room_allowed(
+                user_id="@test:example.com",
+                room_id="!test",
+                aliases=["#test:example.com"],
+            )
+        )
 
-        self.assertTrue(rd_config.is_publishing_room_allowed(
-            user_id="@foobar:example.com",
-            room_id="!test-deny",
-            aliases=[],
-        ))
+        self.assertTrue(
+            rd_config.is_publishing_room_allowed(
+                user_id="@foobar:example.com", room_id="!test-deny", aliases=[]
+            )
+        )
 
-        self.assertFalse(rd_config.is_publishing_room_allowed(
-            user_id="@gah:example.com",
-            room_id="!test-deny",
-            aliases=[],
-        ))
+        self.assertFalse(
+            rd_config.is_publishing_room_allowed(
+                user_id="@gah:example.com", room_id="!test-deny", aliases=[]
+            )
+        )
 
-        self.assertTrue(rd_config.is_publishing_room_allowed(
-            user_id="@test:example.com",
-            room_id="!test",
-            aliases=["#unofficial_st:example.com", "#blah:example.com"],
-        ))
+        self.assertTrue(
+            rd_config.is_publishing_room_allowed(
+                user_id="@test:example.com",
+                room_id="!test",
+                aliases=["#unofficial_st:example.com", "#blah:example.com"],
+            )
+        )
diff --git a/tests/config/test_server.py b/tests/config/test_server.py
index f5836d73ac..de64965a60 100644
--- a/tests/config/test_server.py
+++ b/tests/config/test_server.py
@@ -19,7 +19,6 @@ from tests import unittest
 
 
 class ServerConfigTestCase(unittest.TestCase):
-
     def test_is_threepid_reserved(self):
         user1 = {'medium': 'email', 'address': 'user1@example.com'}
         user2 = {'medium': 'email', 'address': 'user2@example.com'}
diff --git a/tests/config/test_tls.py b/tests/config/test_tls.py
index c260d3359f..40ca428778 100644
--- a/tests/config/test_tls.py
+++ b/tests/config/test_tls.py
@@ -26,7 +26,6 @@ class TestConfig(TlsConfig):
 
 
 class TLSConfigTests(TestCase):
-
     def test_warn_self_signed(self):
         """
         Synapse will give a warning when it loads a self-signed certificate.
@@ -34,7 +33,8 @@ class TLSConfigTests(TestCase):
         config_dir = self.mktemp()
         os.mkdir(config_dir)
         with open(os.path.join(config_dir, "cert.pem"), 'w') as f:
-            f.write("""-----BEGIN CERTIFICATE-----
+            f.write(
+                """-----BEGIN CERTIFICATE-----
 MIID6DCCAtACAws9CjANBgkqhkiG9w0BAQUFADCBtzELMAkGA1UEBhMCVFIxDzAN
 BgNVBAgMBsOHb3J1bTEUMBIGA1UEBwwLQmHFn21ha8OnxLExEjAQBgNVBAMMCWxv
 Y2FsaG9zdDEcMBoGA1UECgwTVHdpc3RlZCBNYXRyaXggTGFiczEkMCIGA1UECwwb
@@ -56,11 +56,12 @@ I8OtG1xGwcok53lyDuuUUDexnK4O5BkjKiVlNPg4HPim5Kuj2hRNFfNt/F2BVIlj
 iZupikC5MT1LQaRwidkSNxCku1TfAyueiBwhLnFwTmIGNnhuDCutEVAD9kFmcJN2
 SznugAcPk4doX2+rL+ila+ThqgPzIkwTUHtnmjI0TI6xsDUlXz5S3UyudrE2Qsfz
 s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
------END CERTIFICATE-----""")
+-----END CERTIFICATE-----"""
+            )
 
         config = {
             "tls_certificate_path": os.path.join(config_dir, "cert.pem"),
-            "tls_fingerprints": []
+            "tls_fingerprints": [],
         }
 
         t = TestConfig()
@@ -75,5 +76,5 @@ s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
                 "Self-signed TLS certificates will not be accepted by "
                 "Synapse 1.0. Please either provide a valid certificate, "
                 "or use Synapse's ACME support to provision one."
-            )
+            ),
         )
diff --git a/tests/crypto/test_keyring.py b/tests/crypto/test_keyring.py
index c30a1a69e7..5a355f00cc 100644
--- a/tests/crypto/test_keyring.py
+++ b/tests/crypto/test_keyring.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2017 New Vector Ltd.
+# Copyright 2017 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,13 +16,21 @@ import time
 
 from mock import Mock
 
+import canonicaljson
 import signedjson.key
 import signedjson.sign
+from signedjson.key import encode_verify_key_base64, get_verify_key
 
 from twisted.internet import defer
 
 from synapse.api.errors import SynapseError
 from synapse.crypto import keyring
+from synapse.crypto.keyring import (
+    PerspectivesKeyFetcher,
+    ServerKeyFetcher,
+    StoreKeyFetcher,
+)
+from synapse.storage.keys import FetchKeyResult
 from synapse.util import logcontext
 from synapse.util.logcontext import LoggingContext
 
@@ -36,7 +44,7 @@ class MockPerspectiveServer(object):
 
     def get_verify_keys(self):
         vk = signedjson.key.get_verify_key(self.key)
-        return {"%s:%s" % (vk.alg, vk.version): vk}
+        return {"%s:%s" % (vk.alg, vk.version): encode_verify_key_base64(vk)}
 
     def get_signed_key(self, server_name, verify_key):
         key_id = "%s:%s" % (verify_key.alg, verify_key.version)
@@ -44,22 +52,31 @@ class MockPerspectiveServer(object):
             "server_name": server_name,
             "old_verify_keys": {},
             "valid_until_ts": time.time() * 1000 + 3600,
-            "verify_keys": {
-                key_id: {"key": signedjson.key.encode_verify_key_base64(verify_key)}
-            },
+            "verify_keys": {key_id: {"key": encode_verify_key_base64(verify_key)}},
         }
-        signedjson.sign.sign_json(res, self.server_name, self.key)
+        self.sign_response(res)
         return res
 
+    def sign_response(self, res):
+        signedjson.sign.sign_json(res, self.server_name, self.key)
+
 
 class KeyringTestCase(unittest.HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
         self.mock_perspective_server = MockPerspectiveServer()
         self.http_client = Mock()
-        hs = self.setup_test_homeserver(handlers=None, http_client=self.http_client)
-        keys = self.mock_perspective_server.get_verify_keys()
-        hs.config.perspectives = {self.mock_perspective_server.server_name: keys}
-        return hs
+
+        config = self.default_config()
+        config["trusted_key_servers"] = [
+            {
+                "server_name": self.mock_perspective_server.server_name,
+                "verify_keys": self.mock_perspective_server.get_verify_keys(),
+            }
+        ]
+
+        return self.setup_test_homeserver(
+            handlers=None, http_client=self.http_client, config=config
+        )
 
     def check_context(self, _, expected):
         self.assertEquals(
@@ -75,7 +92,7 @@ class KeyringTestCase(unittest.HomeserverTestCase):
         # we run the lookup in a logcontext so that the patched inlineCallbacks can check
         # it is doing the right thing with logcontexts.
         wait_1_deferred = run_in_context(
-            kr.wait_for_previous_lookups, ["server1"], {"server1": lookup_1_deferred}
+            kr.wait_for_previous_lookups, {"server1": lookup_1_deferred}
         )
 
         # there were no previous lookups, so the deferred should be ready
@@ -84,7 +101,7 @@ class KeyringTestCase(unittest.HomeserverTestCase):
         # set off another wait. It should block because the first lookup
         # hasn't yet completed.
         wait_2_deferred = run_in_context(
-            kr.wait_for_previous_lookups, ["server1"], {"server1": lookup_2_deferred}
+            kr.wait_for_previous_lookups, {"server1": lookup_2_deferred}
         )
 
         self.assertFalse(wait_2_deferred.called)
@@ -127,7 +144,7 @@ class KeyringTestCase(unittest.HomeserverTestCase):
                 context_11.request = "11"
 
                 res_deferreds = kr.verify_json_objects_for_server(
-                    [("server10", json1), ("server11", {})]
+                    [("server10", json1, 0, "test10"), ("server11", {}, 0, "test11")]
                 )
 
                 # the unsigned json should be rejected pretty quickly
@@ -164,7 +181,7 @@ class KeyringTestCase(unittest.HomeserverTestCase):
                 self.http_client.post_json.return_value = defer.Deferred()
 
                 res_deferreds_2 = kr.verify_json_objects_for_server(
-                    [("server10", json1, )]
+                    [("server10", json1, 0, "test")]
                 )
                 res_deferreds_2[0].addBoth(self.check_context, None)
                 yield logcontext.make_deferred_yieldable(res_deferreds_2[0])
@@ -187,36 +204,393 @@ class KeyringTestCase(unittest.HomeserverTestCase):
         kr = keyring.Keyring(self.hs)
 
         key1 = signedjson.key.generate_signing_key(1)
-        r = self.hs.datastore.store_server_verify_key(
-            "server9", "", time.time() * 1000, signedjson.key.get_verify_key(key1)
+        r = self.hs.datastore.store_server_verify_keys(
+            "server9",
+            time.time() * 1000,
+            [("server9", get_key_id(key1), FetchKeyResult(get_verify_key(key1), 1000))],
         )
         self.get_success(r)
+
         json1 = {}
         signedjson.sign.sign_json(json1, "server9", key1)
 
         # should fail immediately on an unsigned object
-        d = _verify_json_for_server(kr, "server9", {})
+        d = _verify_json_for_server(kr, "server9", {}, 0, "test unsigned")
         self.failureResultOf(d, SynapseError)
 
-        d = _verify_json_for_server(kr, "server9", json1)
-        self.assertFalse(d.called)
+        # should suceed on a signed object
+        d = _verify_json_for_server(kr, "server9", json1, 500, "test signed")
+        # self.assertFalse(d.called)
         self.get_success(d)
 
+    def test_verify_json_for_server_with_null_valid_until_ms(self):
+        """Tests that we correctly handle key requests for keys we've stored
+        with a null `ts_valid_until_ms`
+        """
+        mock_fetcher = keyring.KeyFetcher()
+        mock_fetcher.get_keys = Mock(return_value=defer.succeed({}))
+
+        kr = keyring.Keyring(
+            self.hs, key_fetchers=(StoreKeyFetcher(self.hs), mock_fetcher)
+        )
+
+        key1 = signedjson.key.generate_signing_key(1)
+        r = self.hs.datastore.store_server_verify_keys(
+            "server9",
+            time.time() * 1000,
+            [("server9", get_key_id(key1), FetchKeyResult(get_verify_key(key1), None))],
+        )
+        self.get_success(r)
+
+        json1 = {}
+        signedjson.sign.sign_json(json1, "server9", key1)
+
+        # should fail immediately on an unsigned object
+        d = _verify_json_for_server(kr, "server9", {}, 0, "test unsigned")
+        self.failureResultOf(d, SynapseError)
+
+        # should fail on a signed object with a non-zero minimum_valid_until_ms,
+        # as it tries to refetch the keys and fails.
+        d = _verify_json_for_server(
+            kr, "server9", json1, 500, "test signed non-zero min"
+        )
+        self.get_failure(d, SynapseError)
+
+        # We expect the keyring tried to refetch the key once.
+        mock_fetcher.get_keys.assert_called_once_with(
+            {"server9": {get_key_id(key1): 500}}
+        )
+
+        # should succeed on a signed object with a 0 minimum_valid_until_ms
+        d = _verify_json_for_server(
+            kr, "server9", json1, 0, "test signed with zero min"
+        )
+        self.get_success(d)
+
+    def test_verify_json_dedupes_key_requests(self):
+        """Two requests for the same key should be deduped."""
+        key1 = signedjson.key.generate_signing_key(1)
+
+        def get_keys(keys_to_fetch):
+            # there should only be one request object (with the max validity)
+            self.assertEqual(keys_to_fetch, {"server1": {get_key_id(key1): 1500}})
+
+            return defer.succeed(
+                {
+                    "server1": {
+                        get_key_id(key1): FetchKeyResult(get_verify_key(key1), 1200)
+                    }
+                }
+            )
+
+        mock_fetcher = keyring.KeyFetcher()
+        mock_fetcher.get_keys = Mock(side_effect=get_keys)
+        kr = keyring.Keyring(self.hs, key_fetchers=(mock_fetcher,))
+
+        json1 = {}
+        signedjson.sign.sign_json(json1, "server1", key1)
+
+        # the first request should succeed; the second should fail because the key
+        # has expired
+        results = kr.verify_json_objects_for_server(
+            [("server1", json1, 500, "test1"), ("server1", json1, 1500, "test2")]
+        )
+        self.assertEqual(len(results), 2)
+        self.get_success(results[0])
+        e = self.get_failure(results[1], SynapseError).value
+        self.assertEqual(e.errcode, "M_UNAUTHORIZED")
+        self.assertEqual(e.code, 401)
+
+        # there should have been a single call to the fetcher
+        mock_fetcher.get_keys.assert_called_once()
+
+    def test_verify_json_falls_back_to_other_fetchers(self):
+        """If the first fetcher cannot provide a recent enough key, we fall back"""
+        key1 = signedjson.key.generate_signing_key(1)
+
+        def get_keys1(keys_to_fetch):
+            self.assertEqual(keys_to_fetch, {"server1": {get_key_id(key1): 1500}})
+            return defer.succeed(
+                {
+                    "server1": {
+                        get_key_id(key1): FetchKeyResult(get_verify_key(key1), 800)
+                    }
+                }
+            )
+
+        def get_keys2(keys_to_fetch):
+            self.assertEqual(keys_to_fetch, {"server1": {get_key_id(key1): 1500}})
+            return defer.succeed(
+                {
+                    "server1": {
+                        get_key_id(key1): FetchKeyResult(get_verify_key(key1), 1200)
+                    }
+                }
+            )
+
+        mock_fetcher1 = keyring.KeyFetcher()
+        mock_fetcher1.get_keys = Mock(side_effect=get_keys1)
+        mock_fetcher2 = keyring.KeyFetcher()
+        mock_fetcher2.get_keys = Mock(side_effect=get_keys2)
+        kr = keyring.Keyring(self.hs, key_fetchers=(mock_fetcher1, mock_fetcher2))
+
+        json1 = {}
+        signedjson.sign.sign_json(json1, "server1", key1)
+
+        results = kr.verify_json_objects_for_server(
+            [("server1", json1, 1200, "test1"), ("server1", json1, 1500, "test2")]
+        )
+        self.assertEqual(len(results), 2)
+        self.get_success(results[0])
+        e = self.get_failure(results[1], SynapseError).value
+        self.assertEqual(e.errcode, "M_UNAUTHORIZED")
+        self.assertEqual(e.code, 401)
+
+        # there should have been a single call to each fetcher
+        mock_fetcher1.get_keys.assert_called_once()
+        mock_fetcher2.get_keys.assert_called_once()
+
+
+class ServerKeyFetcherTestCase(unittest.HomeserverTestCase):
+    def make_homeserver(self, reactor, clock):
+        self.http_client = Mock()
+        hs = self.setup_test_homeserver(handlers=None, http_client=self.http_client)
+        return hs
+
+    def test_get_keys_from_server(self):
+        # arbitrarily advance the clock a bit
+        self.reactor.advance(100)
+
+        SERVER_NAME = "server2"
+        fetcher = ServerKeyFetcher(self.hs)
+        testkey = signedjson.key.generate_signing_key("ver1")
+        testverifykey = signedjson.key.get_verify_key(testkey)
+        testverifykey_id = "ed25519:ver1"
+        VALID_UNTIL_TS = 200 * 1000
+
+        # valid response
+        response = {
+            "server_name": SERVER_NAME,
+            "old_verify_keys": {},
+            "valid_until_ts": VALID_UNTIL_TS,
+            "verify_keys": {
+                testverifykey_id: {
+                    "key": signedjson.key.encode_verify_key_base64(testverifykey)
+                }
+            },
+        }
+        signedjson.sign.sign_json(response, SERVER_NAME, testkey)
+
+        def get_json(destination, path, **kwargs):
+            self.assertEqual(destination, SERVER_NAME)
+            self.assertEqual(path, "/_matrix/key/v2/server/key1")
+            return response
+
+        self.http_client.get_json.side_effect = get_json
+
+        keys_to_fetch = {SERVER_NAME: {"key1": 0}}
+        keys = self.get_success(fetcher.get_keys(keys_to_fetch))
+        k = keys[SERVER_NAME][testverifykey_id]
+        self.assertEqual(k.valid_until_ts, VALID_UNTIL_TS)
+        self.assertEqual(k.verify_key, testverifykey)
+        self.assertEqual(k.verify_key.alg, "ed25519")
+        self.assertEqual(k.verify_key.version, "ver1")
+
+        # check that the perspectives store is correctly updated
+        lookup_triplet = (SERVER_NAME, testverifykey_id, None)
+        key_json = self.get_success(
+            self.hs.get_datastore().get_server_keys_json([lookup_triplet])
+        )
+        res = key_json[lookup_triplet]
+        self.assertEqual(len(res), 1)
+        res = res[0]
+        self.assertEqual(res["key_id"], testverifykey_id)
+        self.assertEqual(res["from_server"], SERVER_NAME)
+        self.assertEqual(res["ts_added_ms"], self.reactor.seconds() * 1000)
+        self.assertEqual(res["ts_valid_until_ms"], VALID_UNTIL_TS)
+
+        # we expect it to be encoded as canonical json *before* it hits the db
+        self.assertEqual(
+            bytes(res["key_json"]), canonicaljson.encode_canonical_json(response)
+        )
+
+        # change the server name: the result should be ignored
+        response["server_name"] = "OTHER_SERVER"
+
+        keys = self.get_success(fetcher.get_keys(keys_to_fetch))
+        self.assertEqual(keys, {})
+
+
+class PerspectivesKeyFetcherTestCase(unittest.HomeserverTestCase):
+    def make_homeserver(self, reactor, clock):
+        self.mock_perspective_server = MockPerspectiveServer()
+        self.http_client = Mock()
+
+        config = self.default_config()
+        config["trusted_key_servers"] = [
+            {
+                "server_name": self.mock_perspective_server.server_name,
+                "verify_keys": self.mock_perspective_server.get_verify_keys(),
+            }
+        ]
+
+        return self.setup_test_homeserver(
+            handlers=None, http_client=self.http_client, config=config
+        )
+
+    def test_get_keys_from_perspectives(self):
+        # arbitrarily advance the clock a bit
+        self.reactor.advance(100)
+
+        fetcher = PerspectivesKeyFetcher(self.hs)
+
+        SERVER_NAME = "server2"
+        testkey = signedjson.key.generate_signing_key("ver1")
+        testverifykey = signedjson.key.get_verify_key(testkey)
+        testverifykey_id = "ed25519:ver1"
+        VALID_UNTIL_TS = 200 * 1000
+
+        # valid response
+        response = {
+            "server_name": SERVER_NAME,
+            "old_verify_keys": {},
+            "valid_until_ts": VALID_UNTIL_TS,
+            "verify_keys": {
+                testverifykey_id: {
+                    "key": signedjson.key.encode_verify_key_base64(testverifykey)
+                }
+            },
+        }
+
+        # the response must be signed by both the origin server and the perspectives
+        # server.
+        signedjson.sign.sign_json(response, SERVER_NAME, testkey)
+        self.mock_perspective_server.sign_response(response)
+
+        def post_json(destination, path, data, **kwargs):
+            self.assertEqual(destination, self.mock_perspective_server.server_name)
+            self.assertEqual(path, "/_matrix/key/v2/query")
+
+            # check that the request is for the expected key
+            q = data["server_keys"]
+            self.assertEqual(list(q[SERVER_NAME].keys()), ["key1"])
+            return {"server_keys": [response]}
+
+        self.http_client.post_json.side_effect = post_json
+
+        keys_to_fetch = {SERVER_NAME: {"key1": 0}}
+        keys = self.get_success(fetcher.get_keys(keys_to_fetch))
+        self.assertIn(SERVER_NAME, keys)
+        k = keys[SERVER_NAME][testverifykey_id]
+        self.assertEqual(k.valid_until_ts, VALID_UNTIL_TS)
+        self.assertEqual(k.verify_key, testverifykey)
+        self.assertEqual(k.verify_key.alg, "ed25519")
+        self.assertEqual(k.verify_key.version, "ver1")
+
+        # check that the perspectives store is correctly updated
+        lookup_triplet = (SERVER_NAME, testverifykey_id, None)
+        key_json = self.get_success(
+            self.hs.get_datastore().get_server_keys_json([lookup_triplet])
+        )
+        res = key_json[lookup_triplet]
+        self.assertEqual(len(res), 1)
+        res = res[0]
+        self.assertEqual(res["key_id"], testverifykey_id)
+        self.assertEqual(res["from_server"], self.mock_perspective_server.server_name)
+        self.assertEqual(res["ts_added_ms"], self.reactor.seconds() * 1000)
+        self.assertEqual(res["ts_valid_until_ms"], VALID_UNTIL_TS)
+
+        self.assertEqual(
+            bytes(res["key_json"]), canonicaljson.encode_canonical_json(response)
+        )
+
+    def test_invalid_perspectives_responses(self):
+        """Check that invalid responses from the perspectives server are rejected"""
+        # arbitrarily advance the clock a bit
+        self.reactor.advance(100)
+
+        SERVER_NAME = "server2"
+        testkey = signedjson.key.generate_signing_key("ver1")
+        testverifykey = signedjson.key.get_verify_key(testkey)
+        testverifykey_id = "ed25519:ver1"
+        VALID_UNTIL_TS = 200 * 1000
+
+        def build_response():
+            # valid response
+            response = {
+                "server_name": SERVER_NAME,
+                "old_verify_keys": {},
+                "valid_until_ts": VALID_UNTIL_TS,
+                "verify_keys": {
+                    testverifykey_id: {
+                        "key": signedjson.key.encode_verify_key_base64(testverifykey)
+                    }
+                },
+            }
+
+            # the response must be signed by both the origin server and the perspectives
+            # server.
+            signedjson.sign.sign_json(response, SERVER_NAME, testkey)
+            self.mock_perspective_server.sign_response(response)
+            return response
+
+        def get_key_from_perspectives(response):
+            fetcher = PerspectivesKeyFetcher(self.hs)
+            keys_to_fetch = {SERVER_NAME: {"key1": 0}}
+
+            def post_json(destination, path, data, **kwargs):
+                self.assertEqual(destination, self.mock_perspective_server.server_name)
+                self.assertEqual(path, "/_matrix/key/v2/query")
+                return {"server_keys": [response]}
+
+            self.http_client.post_json.side_effect = post_json
+
+            return self.get_success(fetcher.get_keys(keys_to_fetch))
+
+        # start with a valid response so we can check we are testing the right thing
+        response = build_response()
+        keys = get_key_from_perspectives(response)
+        k = keys[SERVER_NAME][testverifykey_id]
+        self.assertEqual(k.verify_key, testverifykey)
+
+        # remove the perspectives server's signature
+        response = build_response()
+        del response["signatures"][self.mock_perspective_server.server_name]
+        self.http_client.post_json.return_value = {"server_keys": [response]}
+        keys = get_key_from_perspectives(response)
+        self.assertEqual(keys, {}, "Expected empty dict with missing persp server sig")
+
+        # remove the origin server's signature
+        response = build_response()
+        del response["signatures"][SERVER_NAME]
+        self.http_client.post_json.return_value = {"server_keys": [response]}
+        keys = get_key_from_perspectives(response)
+        self.assertEqual(keys, {}, "Expected empty dict with missing origin server sig")
+
+
+def get_key_id(key):
+    """Get the matrix ID tag for a given SigningKey or VerifyKey"""
+    return "%s:%s" % (key.alg, key.version)
+
 
 @defer.inlineCallbacks
 def run_in_context(f, *args, **kwargs):
-    with LoggingContext("testctx"):
+    with LoggingContext("testctx") as ctx:
+        # we set the "request" prop to make it easier to follow what's going on in the
+        # logs.
+        ctx.request = "testctx"
         rv = yield f(*args, **kwargs)
     defer.returnValue(rv)
 
 
-def _verify_json_for_server(keyring, server_name, json_object):
+def _verify_json_for_server(kr, *args):
     """thin wrapper around verify_json_for_server which makes sure it is wrapped
     with the patched defer.inlineCallbacks.
     """
+
     @defer.inlineCallbacks
     def v():
-        rv1 = yield keyring.verify_json_for_server(server_name, json_object)
+        rv1 = yield kr.verify_json_for_server(*args)
         defer.returnValue(rv1)
 
     return run_in_context(v)
diff --git a/tests/federation/test_complexity.py b/tests/federation/test_complexity.py
new file mode 100644
index 0000000000..1e3e5aec66
--- /dev/null
+++ b/tests/federation/test_complexity.py
@@ -0,0 +1,90 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 Matrix.org Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from twisted.internet import defer
+
+from synapse.config.ratelimiting import FederationRateLimitConfig
+from synapse.federation.transport import server
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+from synapse.util.ratelimitutils import FederationRateLimiter
+
+from tests import unittest
+
+
+class RoomComplexityTests(unittest.HomeserverTestCase):
+
+    servlets = [
+        admin.register_servlets,
+        room.register_servlets,
+        login.register_servlets,
+    ]
+
+    def default_config(self, name='test'):
+        config = super(RoomComplexityTests, self).default_config(name=name)
+        config["limit_large_remote_room_joins"] = True
+        config["limit_large_remote_room_complexity"] = 0.05
+        return config
+
+    def prepare(self, reactor, clock, homeserver):
+        class Authenticator(object):
+            def authenticate_request(self, request, content):
+                return defer.succeed("otherserver.nottld")
+
+        ratelimiter = FederationRateLimiter(
+            clock,
+            FederationRateLimitConfig(
+                window_size=1,
+                sleep_limit=1,
+                sleep_msec=1,
+                reject_limit=1000,
+                concurrent_requests=1000,
+            ),
+        )
+        server.register_servlets(
+            homeserver, self.resource, Authenticator(), ratelimiter
+        )
+
+    def test_complexity_simple(self):
+
+        u1 = self.register_user("u1", "pass")
+        u1_token = self.login("u1", "pass")
+
+        room_1 = self.helper.create_room_as(u1, tok=u1_token)
+        self.helper.send_state(
+            room_1, event_type="m.room.topic", body={"topic": "foo"}, tok=u1_token
+        )
+
+        # Get the room complexity
+        request, channel = self.make_request(
+            "GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code)
+        complexity = channel.json_body["v1"]
+        self.assertTrue(complexity > 0, complexity)
+
+        # Artificially raise the complexity
+        store = self.hs.get_datastore()
+        store.get_current_state_event_counts = lambda x: defer.succeed(500 * 1.23)
+
+        # Get the room complexity again -- make sure it's our artificial value
+        request, channel = self.make_request(
+            "GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code)
+        complexity = channel.json_body["v1"]
+        self.assertEqual(complexity, 1.23)
diff --git a/tests/federation/test_federation_sender.py b/tests/federation/test_federation_sender.py
index 28e7e27416..7bb106b5f7 100644
--- a/tests/federation/test_federation_sender.py
+++ b/tests/federation/test_federation_sender.py
@@ -33,11 +33,15 @@ class FederationSenderTestCases(HomeserverTestCase):
         mock_state_handler = self.hs.get_state_handler()
         mock_state_handler.get_current_hosts_in_room.return_value = ["test", "host2"]
 
-        mock_send_transaction = self.hs.get_federation_transport_client().send_transaction
+        mock_send_transaction = (
+            self.hs.get_federation_transport_client().send_transaction
+        )
         mock_send_transaction.return_value = defer.succeed({})
 
         sender = self.hs.get_federation_sender()
-        receipt = ReadReceipt("room_id", "m.read", "user_id", ["event_id"], {"ts": 1234})
+        receipt = ReadReceipt(
+            "room_id", "m.read", "user_id", ["event_id"], {"ts": 1234}
+        )
         self.successResultOf(sender.send_read_receipt(receipt))
 
         self.pump()
@@ -46,21 +50,24 @@ class FederationSenderTestCases(HomeserverTestCase):
         mock_send_transaction.assert_called_once()
         json_cb = mock_send_transaction.call_args[0][1]
         data = json_cb()
-        self.assertEqual(data['edus'], [
-            {
-                'edu_type': 'm.receipt',
-                'content': {
-                    'room_id': {
-                        'm.read': {
-                            'user_id': {
-                                'event_ids': ['event_id'],
-                                'data': {'ts': 1234},
-                            },
-                        },
+        self.assertEqual(
+            data['edus'],
+            [
+                {
+                    'edu_type': 'm.receipt',
+                    'content': {
+                        'room_id': {
+                            'm.read': {
+                                'user_id': {
+                                    'event_ids': ['event_id'],
+                                    'data': {'ts': 1234},
+                                }
+                            }
+                        }
                     },
-                },
-            },
-        ])
+                }
+            ],
+        )
 
     def test_send_receipts_with_backoff(self):
         """Send two receipts in quick succession; the second should be flushed, but
@@ -68,11 +75,15 @@ class FederationSenderTestCases(HomeserverTestCase):
         mock_state_handler = self.hs.get_state_handler()
         mock_state_handler.get_current_hosts_in_room.return_value = ["test", "host2"]
 
-        mock_send_transaction = self.hs.get_federation_transport_client().send_transaction
+        mock_send_transaction = (
+            self.hs.get_federation_transport_client().send_transaction
+        )
         mock_send_transaction.return_value = defer.succeed({})
 
         sender = self.hs.get_federation_sender()
-        receipt = ReadReceipt("room_id", "m.read", "user_id", ["event_id"], {"ts": 1234})
+        receipt = ReadReceipt(
+            "room_id", "m.read", "user_id", ["event_id"], {"ts": 1234}
+        )
         self.successResultOf(sender.send_read_receipt(receipt))
 
         self.pump()
@@ -81,25 +92,30 @@ class FederationSenderTestCases(HomeserverTestCase):
         mock_send_transaction.assert_called_once()
         json_cb = mock_send_transaction.call_args[0][1]
         data = json_cb()
-        self.assertEqual(data['edus'], [
-            {
-                'edu_type': 'm.receipt',
-                'content': {
-                    'room_id': {
-                        'm.read': {
-                            'user_id': {
-                                'event_ids': ['event_id'],
-                                'data': {'ts': 1234},
-                            },
-                        },
+        self.assertEqual(
+            data['edus'],
+            [
+                {
+                    'edu_type': 'm.receipt',
+                    'content': {
+                        'room_id': {
+                            'm.read': {
+                                'user_id': {
+                                    'event_ids': ['event_id'],
+                                    'data': {'ts': 1234},
+                                }
+                            }
+                        }
                     },
-                },
-            },
-        ])
+                }
+            ],
+        )
         mock_send_transaction.reset_mock()
 
         # send the second RR
-        receipt = ReadReceipt("room_id", "m.read", "user_id", ["other_id"], {"ts": 1234})
+        receipt = ReadReceipt(
+            "room_id", "m.read", "user_id", ["other_id"], {"ts": 1234}
+        )
         self.successResultOf(sender.send_read_receipt(receipt))
         self.pump()
         mock_send_transaction.assert_not_called()
@@ -111,18 +127,21 @@ class FederationSenderTestCases(HomeserverTestCase):
         mock_send_transaction.assert_called_once()
         json_cb = mock_send_transaction.call_args[0][1]
         data = json_cb()
-        self.assertEqual(data['edus'], [
-            {
-                'edu_type': 'm.receipt',
-                'content': {
-                    'room_id': {
-                        'm.read': {
-                            'user_id': {
-                                'event_ids': ['other_id'],
-                                'data': {'ts': 1234},
-                            },
-                        },
+        self.assertEqual(
+            data['edus'],
+            [
+                {
+                    'edu_type': 'm.receipt',
+                    'content': {
+                        'room_id': {
+                            'm.read': {
+                                'user_id': {
+                                    'event_ids': ['other_id'],
+                                    'data': {'ts': 1234},
+                                }
+                            }
+                        }
                     },
-                },
-            },
-        ])
+                }
+            ],
+        )
diff --git a/tests/handlers/test_directory.py b/tests/handlers/test_directory.py
index 5b2105bc76..917548bb31 100644
--- a/tests/handlers/test_directory.py
+++ b/tests/handlers/test_directory.py
@@ -115,11 +115,7 @@ class TestCreateAliasACL(unittest.HomeserverTestCase):
         # We cheekily override the config to add custom alias creation rules
         config = {}
         config["alias_creation_rules"] = [
-            {
-                "user_id": "*",
-                "alias": "#unofficial_*",
-                "action": "allow",
-            }
+            {"user_id": "*", "alias": "#unofficial_*", "action": "allow"}
         ]
         config["room_list_publication_rules"] = []
 
@@ -162,9 +158,7 @@ class TestRoomListSearchDisabled(unittest.HomeserverTestCase):
         room_id = self.helper.create_room_as(self.user_id)
 
         request, channel = self.make_request(
-            "PUT",
-            b"directory/list/room/%s" % (room_id.encode('ascii'),),
-            b'{}',
+            "PUT", b"directory/list/room/%s" % (room_id.encode('ascii'),), b'{}'
         )
         self.render(request)
         self.assertEquals(200, channel.code, channel.result)
@@ -179,10 +173,7 @@ class TestRoomListSearchDisabled(unittest.HomeserverTestCase):
         self.directory_handler.enable_room_list_search = True
 
         # Room list is enabled so we should get some results
-        request, channel = self.make_request(
-            "GET",
-            b"publicRooms",
-        )
+        request, channel = self.make_request("GET", b"publicRooms")
         self.render(request)
         self.assertEquals(200, channel.code, channel.result)
         self.assertTrue(len(channel.json_body["chunk"]) > 0)
@@ -191,10 +182,7 @@ class TestRoomListSearchDisabled(unittest.HomeserverTestCase):
         self.directory_handler.enable_room_list_search = False
 
         # Room list disabled so we should get no results
-        request, channel = self.make_request(
-            "GET",
-            b"publicRooms",
-        )
+        request, channel = self.make_request("GET", b"publicRooms")
         self.render(request)
         self.assertEquals(200, channel.code, channel.result)
         self.assertTrue(len(channel.json_body["chunk"]) == 0)
@@ -202,9 +190,7 @@ class TestRoomListSearchDisabled(unittest.HomeserverTestCase):
         # Room list disabled so we shouldn't be allowed to publish rooms
         room_id = self.helper.create_room_as(self.user_id)
         request, channel = self.make_request(
-            "PUT",
-            b"directory/list/room/%s" % (room_id.encode('ascii'),),
-            b'{}',
+            "PUT", b"directory/list/room/%s" % (room_id.encode('ascii'),), b'{}'
         )
         self.render(request)
         self.assertEquals(403, channel.code, channel.result)
diff --git a/tests/handlers/test_e2e_room_keys.py b/tests/handlers/test_e2e_room_keys.py
index 1c49bbbc3c..2e72a1dd23 100644
--- a/tests/handlers/test_e2e_room_keys.py
+++ b/tests/handlers/test_e2e_room_keys.py
@@ -36,7 +36,7 @@ room_keys = {
                     "first_message_index": 1,
                     "forwarded_count": 1,
                     "is_verified": False,
-                    "session_data": "SSBBTSBBIEZJU0gK"
+                    "session_data": "SSBBTSBBIEZJU0gK",
                 }
             }
         }
@@ -47,15 +47,13 @@ room_keys = {
 class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def __init__(self, *args, **kwargs):
         super(E2eRoomKeysHandlerTestCase, self).__init__(*args, **kwargs)
-        self.hs = None       # type: synapse.server.HomeServer
+        self.hs = None  # type: synapse.server.HomeServer
         self.handler = None  # type: synapse.handlers.e2e_keys.E2eRoomKeysHandler
 
     @defer.inlineCallbacks
     def setUp(self):
         self.hs = yield utils.setup_test_homeserver(
-            self.addCleanup,
-            handlers=None,
-            replication_layer=mock.Mock(),
+            self.addCleanup, handlers=None, replication_layer=mock.Mock()
         )
         self.handler = synapse.handlers.e2e_room_keys.E2eRoomKeysHandler(self.hs)
         self.local_user = "@boris:" + self.hs.hostname
@@ -88,67 +86,86 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_create_version(self):
         """Check that we can create and then retrieve versions.
         """
-        res = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        res = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(res, "1")
 
         # check we can retrieve it as the current version
         res = yield self.handler.get_version_info(self.local_user)
-        self.assertDictEqual(res, {
-            "version": "1",
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        self.assertDictEqual(
+            res,
+            {
+                "version": "1",
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "first_version_auth_data",
+            },
+        )
 
         # check we can retrieve it as a specific version
         res = yield self.handler.get_version_info(self.local_user, "1")
-        self.assertDictEqual(res, {
-            "version": "1",
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        self.assertDictEqual(
+            res,
+            {
+                "version": "1",
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "first_version_auth_data",
+            },
+        )
 
         # upload a new one...
-        res = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "second_version_auth_data",
-        })
+        res = yield self.handler.create_version(
+            self.local_user,
+            {
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "second_version_auth_data",
+            },
+        )
         self.assertEqual(res, "2")
 
         # check we can retrieve it as the current version
         res = yield self.handler.get_version_info(self.local_user)
-        self.assertDictEqual(res, {
-            "version": "2",
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "second_version_auth_data",
-        })
+        self.assertDictEqual(
+            res,
+            {
+                "version": "2",
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "second_version_auth_data",
+            },
+        )
 
     @defer.inlineCallbacks
     def test_update_version(self):
         """Check that we can update versions.
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
-        res = yield self.handler.update_version(self.local_user, version, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "revised_first_version_auth_data",
-            "version": version
-        })
+        res = yield self.handler.update_version(
+            self.local_user,
+            version,
+            {
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "revised_first_version_auth_data",
+                "version": version,
+            },
+        )
         self.assertDictEqual(res, {})
 
         # check we can retrieve it as the current version
         res = yield self.handler.get_version_info(self.local_user)
-        self.assertDictEqual(res, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "revised_first_version_auth_data",
-            "version": version
-        })
+        self.assertDictEqual(
+            res,
+            {
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "revised_first_version_auth_data",
+                "version": version,
+            },
+        )
 
     @defer.inlineCallbacks
     def test_update_missing_version(self):
@@ -156,11 +173,15 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
         """
         res = None
         try:
-            yield self.handler.update_version(self.local_user, "1", {
-                "algorithm": "m.megolm_backup.v1",
-                "auth_data": "revised_first_version_auth_data",
-                "version": "1"
-            })
+            yield self.handler.update_version(
+                self.local_user,
+                "1",
+                {
+                    "algorithm": "m.megolm_backup.v1",
+                    "auth_data": "revised_first_version_auth_data",
+                    "version": "1",
+                },
+            )
         except errors.SynapseError as e:
             res = e.code
         self.assertEqual(res, 404)
@@ -170,29 +191,37 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
         """Check that we get a 400 if the version in the body is missing or
         doesn't match
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         res = None
         try:
-            yield self.handler.update_version(self.local_user, version, {
-                "algorithm": "m.megolm_backup.v1",
-                "auth_data": "revised_first_version_auth_data"
-            })
+            yield self.handler.update_version(
+                self.local_user,
+                version,
+                {
+                    "algorithm": "m.megolm_backup.v1",
+                    "auth_data": "revised_first_version_auth_data",
+                },
+            )
         except errors.SynapseError as e:
             res = e.code
         self.assertEqual(res, 400)
 
         res = None
         try:
-            yield self.handler.update_version(self.local_user, version, {
-                "algorithm": "m.megolm_backup.v1",
-                "auth_data": "revised_first_version_auth_data",
-                "version": "incorrect"
-            })
+            yield self.handler.update_version(
+                self.local_user,
+                version,
+                {
+                    "algorithm": "m.megolm_backup.v1",
+                    "auth_data": "revised_first_version_auth_data",
+                    "version": "incorrect",
+                },
+            )
         except errors.SynapseError as e:
             res = e.code
         self.assertEqual(res, 400)
@@ -223,10 +252,10 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_delete_version(self):
         """Check that we can create and then delete versions.
         """
-        res = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        res = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(res, "1")
 
         # check we can delete it
@@ -255,16 +284,14 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_get_missing_room_keys(self):
         """Check we get an empty response from an empty backup
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         res = yield self.handler.get_room_keys(self.local_user, version)
-        self.assertDictEqual(res, {
-            "rooms": {}
-        })
+        self.assertDictEqual(res, {"rooms": {}})
 
     # TODO: test the locking semantics when uploading room_keys,
     # although this is probably best done in sytest
@@ -275,7 +302,9 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
         """
         res = None
         try:
-            yield self.handler.upload_room_keys(self.local_user, "no_version", room_keys)
+            yield self.handler.upload_room_keys(
+                self.local_user, "no_version", room_keys
+            )
         except errors.SynapseError as e:
             res = e.code
         self.assertEqual(res, 404)
@@ -285,10 +314,10 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
         """Check that we get a 404 on uploading keys when an nonexistent version
         is specified
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         res = None
@@ -304,16 +333,19 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_upload_room_keys_wrong_version(self):
         """Check that we get a 403 on uploading keys for an old version
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "second_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {
+                "algorithm": "m.megolm_backup.v1",
+                "auth_data": "second_version_auth_data",
+            },
+        )
         self.assertEqual(version, "2")
 
         res = None
@@ -327,10 +359,10 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_upload_room_keys_insert(self):
         """Check that we can insert and retrieve keys for a session
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         yield self.handler.upload_room_keys(self.local_user, version, room_keys)
@@ -340,18 +372,13 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
 
         # check getting room_keys for a given room
         res = yield self.handler.get_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org"
+            self.local_user, version, room_id="!abc:matrix.org"
         )
         self.assertDictEqual(res, room_keys)
 
         # check getting room_keys for a given session_id
         res = yield self.handler.get_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
-            session_id="c0ff33",
+            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
         )
         self.assertDictEqual(res, room_keys)
 
@@ -359,10 +386,10 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_upload_room_keys_merge(self):
         """Check that we can upload a new room_key for an existing session and
         have it correctly merged"""
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         yield self.handler.upload_room_keys(self.local_user, version, room_keys)
@@ -378,7 +405,7 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
         res = yield self.handler.get_room_keys(self.local_user, version)
         self.assertEqual(
             res['rooms']['!abc:matrix.org']['sessions']['c0ff33']['session_data'],
-            "SSBBTSBBIEZJU0gK"
+            "SSBBTSBBIEZJU0gK",
         )
 
         # test that marking the session as verified however /does/ replace it
@@ -387,8 +414,7 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
 
         res = yield self.handler.get_room_keys(self.local_user, version)
         self.assertEqual(
-            res['rooms']['!abc:matrix.org']['sessions']['c0ff33']['session_data'],
-            "new"
+            res['rooms']['!abc:matrix.org']['sessions']['c0ff33']['session_data'], "new"
         )
 
         # test that a session with a higher forwarded_count doesn't replace one
@@ -399,8 +425,7 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
 
         res = yield self.handler.get_room_keys(self.local_user, version)
         self.assertEqual(
-            res['rooms']['!abc:matrix.org']['sessions']['c0ff33']['session_data'],
-            "new"
+            res['rooms']['!abc:matrix.org']['sessions']['c0ff33']['session_data'], "new"
         )
 
         # TODO: check edge cases as well as the common variations here
@@ -409,56 +434,36 @@ class E2eRoomKeysHandlerTestCase(unittest.TestCase):
     def test_delete_room_keys(self):
         """Check that we can insert and delete keys for a session
         """
-        version = yield self.handler.create_version(self.local_user, {
-            "algorithm": "m.megolm_backup.v1",
-            "auth_data": "first_version_auth_data",
-        })
+        version = yield self.handler.create_version(
+            self.local_user,
+            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
+        )
         self.assertEqual(version, "1")
 
         # check for bulk-delete
         yield self.handler.upload_room_keys(self.local_user, version, room_keys)
         yield self.handler.delete_room_keys(self.local_user, version)
         res = yield self.handler.get_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
-            session_id="c0ff33",
+            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
         )
-        self.assertDictEqual(res, {
-            "rooms": {}
-        })
+        self.assertDictEqual(res, {"rooms": {}})
 
         # check for bulk-delete per room
         yield self.handler.upload_room_keys(self.local_user, version, room_keys)
         yield self.handler.delete_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
+            self.local_user, version, room_id="!abc:matrix.org"
         )
         res = yield self.handler.get_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
-            session_id="c0ff33",
+            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
         )
-        self.assertDictEqual(res, {
-            "rooms": {}
-        })
+        self.assertDictEqual(res, {"rooms": {}})
 
         # check for bulk-delete per session
         yield self.handler.upload_room_keys(self.local_user, version, room_keys)
         yield self.handler.delete_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
-            session_id="c0ff33",
+            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
         )
         res = yield self.handler.get_room_keys(
-            self.local_user,
-            version,
-            room_id="!abc:matrix.org",
-            session_id="c0ff33",
+            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
         )
-        self.assertDictEqual(res, {
-            "rooms": {}
-        })
+        self.assertDictEqual(res, {"rooms": {}})
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 94c6080e34..f70c6e7d65 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -424,8 +424,7 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
 
     def make_homeserver(self, reactor, clock):
         hs = self.setup_test_homeserver(
-            "server", http_client=None,
-            federation_sender=Mock(),
+            "server", http_client=None, federation_sender=Mock()
         )
         return hs
 
@@ -457,7 +456,7 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
 
         # Mark test2 as online, test will be offline with a last_active of 0
         self.presence_handler.set_state(
-            UserID.from_string("@test2:server"), {"presence": PresenceState.ONLINE},
+            UserID.from_string("@test2:server"), {"presence": PresenceState.ONLINE}
         )
         self.reactor.pump([0])  # Wait for presence updates to be handled
 
@@ -506,13 +505,13 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
 
         # Mark test as online
         self.presence_handler.set_state(
-            UserID.from_string("@test:server"), {"presence": PresenceState.ONLINE},
+            UserID.from_string("@test:server"), {"presence": PresenceState.ONLINE}
         )
 
         # Mark test2 as online, test will be offline with a last_active of 0.
         # Note we don't join them to the room yet
         self.presence_handler.set_state(
-            UserID.from_string("@test2:server"), {"presence": PresenceState.ONLINE},
+            UserID.from_string("@test2:server"), {"presence": PresenceState.ONLINE}
         )
 
         # Add servers to the room
@@ -541,8 +540,7 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
         )
         self.assertEqual(expected_state.state, PresenceState.ONLINE)
         self.federation_sender.send_presence_to_destinations.assert_called_once_with(
-            destinations=set(("server2", "server3")),
-            states=[expected_state]
+            destinations=set(("server2", "server3")), states=[expected_state]
         )
 
     def _add_new_user(self, room_id, user_id):
@@ -565,7 +563,7 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
             type=EventTypes.Member,
             sender=user_id,
             state_key=user_id,
-            content={"membership": Membership.JOIN}
+            content={"membership": Membership.JOIN},
         )
 
         prev_event_ids = self.get_success(
diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py
index 017ea0385e..5ffba2ca7a 100644
--- a/tests/handlers/test_register.py
+++ b/tests/handlers/test_register.py
@@ -37,8 +37,12 @@ class RegistrationTestCase(unittest.HomeserverTestCase):
         hs_config = self.default_config("test")
 
         # some of the tests rely on us having a user consent version
-        hs_config.user_consent_version = "test_consent_version"
-        hs_config.max_mau_value = 50
+        hs_config["user_consent"] = {
+            "version": "test_consent_version",
+            "template_dir": ".",
+        }
+        hs_config["max_mau_value"] = 50
+        hs_config["limit_usage_by_mau"] = True
 
         hs = self.setup_test_homeserver(config=hs_config, expire_access_token=True)
         return hs
@@ -224,3 +228,10 @@ class RegistrationTestCase(unittest.HomeserverTestCase):
     def test_register_not_support_user(self):
         res = self.get_success(self.handler.register(localpart='user'))
         self.assertFalse(self.store.is_support_user(res[0]))
+
+    def test_invalid_user_id_length(self):
+        invalid_user_id = "x" * 256
+        self.get_failure(
+            self.handler.register(localpart=invalid_user_id),
+            SynapseError
+        )
diff --git a/tests/handlers/test_stats.py b/tests/handlers/test_stats.py
new file mode 100644
index 0000000000..2710c991cf
--- /dev/null
+++ b/tests/handlers/test_stats.py
@@ -0,0 +1,307 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from mock import Mock
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, Membership
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+
+from tests import unittest
+
+
+class StatsRoomTests(unittest.HomeserverTestCase):
+
+    servlets = [
+        admin.register_servlets_for_client_rest_resource,
+        room.register_servlets,
+        login.register_servlets,
+    ]
+
+    def prepare(self, reactor, clock, hs):
+
+        self.store = hs.get_datastore()
+        self.handler = self.hs.get_stats_handler()
+
+    def _add_background_updates(self):
+        """
+        Add the background updates we need to run.
+        """
+        # Ugh, have to reset this flag
+        self.store._all_done = False
+
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {"update_name": "populate_stats_createtables", "progress_json": "{}"},
+            )
+        )
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {
+                    "update_name": "populate_stats_process_rooms",
+                    "progress_json": "{}",
+                    "depends_on": "populate_stats_createtables",
+                },
+            )
+        )
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {
+                    "update_name": "populate_stats_cleanup",
+                    "progress_json": "{}",
+                    "depends_on": "populate_stats_process_rooms",
+                },
+            )
+        )
+
+    def test_initial_room(self):
+        """
+        The background updates will build the table from scratch.
+        """
+        r = self.get_success(self.store.get_all_room_state())
+        self.assertEqual(len(r), 0)
+
+        # Disable stats
+        self.hs.config.stats_enabled = False
+        self.handler.stats_enabled = False
+
+        u1 = self.register_user("u1", "pass")
+        u1_token = self.login("u1", "pass")
+
+        room_1 = self.helper.create_room_as(u1, tok=u1_token)
+        self.helper.send_state(
+            room_1, event_type="m.room.topic", body={"topic": "foo"}, tok=u1_token
+        )
+
+        # Stats disabled, shouldn't have done anything
+        r = self.get_success(self.store.get_all_room_state())
+        self.assertEqual(len(r), 0)
+
+        # Enable stats
+        self.hs.config.stats_enabled = True
+        self.handler.stats_enabled = True
+
+        # Do the initial population of the user directory via the background update
+        self._add_background_updates()
+
+        while not self.get_success(self.store.has_completed_background_updates()):
+            self.get_success(self.store.do_next_background_update(100), by=0.1)
+
+        r = self.get_success(self.store.get_all_room_state())
+
+        self.assertEqual(len(r), 1)
+        self.assertEqual(r[0]["topic"], "foo")
+
+    def test_initial_earliest_token(self):
+        """
+        Ingestion via notify_new_event will ignore tokens that the background
+        update have already processed.
+        """
+        self.reactor.advance(86401)
+
+        self.hs.config.stats_enabled = False
+        self.handler.stats_enabled = False
+
+        u1 = self.register_user("u1", "pass")
+        u1_token = self.login("u1", "pass")
+
+        u2 = self.register_user("u2", "pass")
+        u2_token = self.login("u2", "pass")
+
+        u3 = self.register_user("u3", "pass")
+        u3_token = self.login("u3", "pass")
+
+        room_1 = self.helper.create_room_as(u1, tok=u1_token)
+        self.helper.send_state(
+            room_1, event_type="m.room.topic", body={"topic": "foo"}, tok=u1_token
+        )
+
+        # Begin the ingestion by creating the temp tables. This will also store
+        # the position that the deltas should begin at, once they take over.
+        self.hs.config.stats_enabled = True
+        self.handler.stats_enabled = True
+        self.store._all_done = False
+        self.get_success(self.store.update_stats_stream_pos(None))
+
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {"update_name": "populate_stats_createtables", "progress_json": "{}"},
+            )
+        )
+
+        while not self.get_success(self.store.has_completed_background_updates()):
+            self.get_success(self.store.do_next_background_update(100), by=0.1)
+
+        # Now, before the table is actually ingested, add some more events.
+        self.helper.invite(room=room_1, src=u1, targ=u2, tok=u1_token)
+        self.helper.join(room=room_1, user=u2, tok=u2_token)
+
+        # Now do the initial ingestion.
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {"update_name": "populate_stats_process_rooms", "progress_json": "{}"},
+            )
+        )
+        self.get_success(
+            self.store._simple_insert(
+                "background_updates",
+                {
+                    "update_name": "populate_stats_cleanup",
+                    "progress_json": "{}",
+                    "depends_on": "populate_stats_process_rooms",
+                },
+            )
+        )
+
+        self.store._all_done = False
+        while not self.get_success(self.store.has_completed_background_updates()):
+            self.get_success(self.store.do_next_background_update(100), by=0.1)
+
+        self.reactor.advance(86401)
+
+        # Now add some more events, triggering ingestion. Because of the stream
+        # position being set to before the events sent in the middle, a simpler
+        # implementation would reprocess those events, and say there were four
+        # users, not three.
+        self.helper.invite(room=room_1, src=u1, targ=u3, tok=u1_token)
+        self.helper.join(room=room_1, user=u3, tok=u3_token)
+
+        # Get the deltas! There should be two -- day 1, and day 2.
+        r = self.get_success(self.store.get_deltas_for_room(room_1, 0))
+
+        # The oldest has 2 joined members
+        self.assertEqual(r[-1]["joined_members"], 2)
+
+        # The newest has 3
+        self.assertEqual(r[0]["joined_members"], 3)
+
+    def test_incorrect_state_transition(self):
+        """
+        If the state transition is not one of (JOIN, INVITE, LEAVE, BAN) to
+        (JOIN, INVITE, LEAVE, BAN), an error is raised.
+        """
+        events = {
+            "a1": {"membership": Membership.LEAVE},
+            "a2": {"membership": "not a real thing"},
+        }
+
+        def get_event(event_id, allow_none=True):
+            m = Mock()
+            m.content = events[event_id]
+            d = defer.Deferred()
+            self.reactor.callLater(0.0, d.callback, m)
+            return d
+
+        def get_received_ts(event_id):
+            return defer.succeed(1)
+
+        self.store.get_received_ts = get_received_ts
+        self.store.get_event = get_event
+
+        deltas = [
+            {
+                "type": EventTypes.Member,
+                "state_key": "some_user",
+                "room_id": "room",
+                "event_id": "a1",
+                "prev_event_id": "a2",
+                "stream_id": 60,
+            }
+        ]
+
+        f = self.get_failure(self.handler._handle_deltas(deltas), ValueError)
+        self.assertEqual(
+            f.value.args[0], "'not a real thing' is not a valid prev_membership"
+        )
+
+        # And the other way...
+        deltas = [
+            {
+                "type": EventTypes.Member,
+                "state_key": "some_user",
+                "room_id": "room",
+                "event_id": "a2",
+                "prev_event_id": "a1",
+                "stream_id": 100,
+            }
+        ]
+
+        f = self.get_failure(self.handler._handle_deltas(deltas), ValueError)
+        self.assertEqual(
+            f.value.args[0], "'not a real thing' is not a valid membership"
+        )
+
+    def test_redacted_prev_event(self):
+        """
+        If the prev_event does not exist, then it is assumed to be a LEAVE.
+        """
+        u1 = self.register_user("u1", "pass")
+        u1_token = self.login("u1", "pass")
+
+        room_1 = self.helper.create_room_as(u1, tok=u1_token)
+
+        # Do the initial population of the user directory via the background update
+        self._add_background_updates()
+
+        while not self.get_success(self.store.has_completed_background_updates()):
+            self.get_success(self.store.do_next_background_update(100), by=0.1)
+
+        events = {
+            "a1": None,
+            "a2": {"membership": Membership.JOIN},
+        }
+
+        def get_event(event_id, allow_none=True):
+            if events.get(event_id):
+                m = Mock()
+                m.content = events[event_id]
+            else:
+                m = None
+            d = defer.Deferred()
+            self.reactor.callLater(0.0, d.callback, m)
+            return d
+
+        def get_received_ts(event_id):
+            return defer.succeed(1)
+
+        self.store.get_received_ts = get_received_ts
+        self.store.get_event = get_event
+
+        deltas = [
+            {
+                "type": EventTypes.Member,
+                "state_key": "some_user:test",
+                "room_id": room_1,
+                "event_id": "a2",
+                "prev_event_id": "a1",
+                "stream_id": 100,
+            }
+        ]
+
+        # Handle our fake deltas, which has a user going from LEAVE -> JOIN.
+        self.get_success(self.handler._handle_deltas(deltas))
+
+        # One delta, with two joined members -- the room creator, and our fake
+        # user.
+        r = self.get_success(self.store.get_deltas_for_room(room_1, 0))
+        self.assertEqual(len(r), 1)
+        self.assertEqual(r[0]["joined_members"], 2)
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index 5a0b6c201c..cb8b4d2913 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -64,20 +64,22 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
         mock_federation_client.put_json.return_value = defer.succeed((200, "OK"))
 
         hs = self.setup_test_homeserver(
-            datastore=(Mock(
-                spec=[
-                    # Bits that Federation needs
-                    "prep_send_transaction",
-                    "delivered_txn",
-                    "get_received_txn_response",
-                    "set_received_txn_response",
-                    "get_destination_retry_timings",
-                    "get_devices_by_remote",
-                    # Bits that user_directory needs
-                    "get_user_directory_stream_pos",
-                    "get_current_state_deltas",
-                ]
-            )),
+            datastore=(
+                Mock(
+                    spec=[
+                        # Bits that Federation needs
+                        "prep_send_transaction",
+                        "delivered_txn",
+                        "get_received_txn_response",
+                        "set_received_txn_response",
+                        "get_destination_retry_timings",
+                        "get_devices_by_remote",
+                        # Bits that user_directory needs
+                        "get_user_directory_stream_pos",
+                        "get_current_state_deltas",
+                    ]
+                )
+            ),
             notifier=Mock(),
             http_client=mock_federation_client,
             keyring=mock_keyring,
@@ -87,7 +89,7 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
 
     def prepare(self, reactor, clock, hs):
         # the tests assume that we are starting at unix time 1000
-        reactor.pump((1000, ))
+        reactor.pump((1000,))
 
         mock_notifier = hs.get_notifier()
         self.on_new_event = mock_notifier.on_new_event
@@ -114,6 +116,7 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
         def check_joined_room(room_id, user_id):
             if user_id not in [u.to_string() for u in self.room_members]:
                 raise AuthError(401, "User is not in the room")
+
         hs.get_auth().check_joined_room = check_joined_room
 
         def get_joined_hosts_for_room(room_id):
@@ -123,6 +126,7 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
 
         def get_current_users_in_room(room_id):
             return set(str(u) for u in self.room_members)
+
         hs.get_state_handler().get_current_users_in_room = get_current_users_in_room
 
         self.datastore.get_user_directory_stream_pos.return_value = (
@@ -141,21 +145,16 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
 
         self.assertEquals(self.event_source.get_current_key(), 0)
 
-        self.successResultOf(self.handler.started_typing(
-            target_user=U_APPLE,
-            auth_user=U_APPLE,
-            room_id=ROOM_ID,
-            timeout=20000,
-        ))
-
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 1, rooms=[ROOM_ID])]
+        self.successResultOf(
+            self.handler.started_typing(
+                target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID, timeout=20000
+            )
         )
 
+        self.on_new_event.assert_has_calls([call('typing_key', 1, rooms=[ROOM_ID])])
+
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=0
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=0)
         self.assertEquals(
             events[0],
             [
@@ -170,12 +169,11 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
     def test_started_typing_remote_send(self):
         self.room_members = [U_APPLE, U_ONION]
 
-        self.successResultOf(self.handler.started_typing(
-            target_user=U_APPLE,
-            auth_user=U_APPLE,
-            room_id=ROOM_ID,
-            timeout=20000,
-        ))
+        self.successResultOf(
+            self.handler.started_typing(
+                target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID, timeout=20000
+            )
+        )
 
         put_json = self.hs.get_http_client().put_json
         put_json.assert_called_once_with(
@@ -216,14 +214,10 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
         self.render(request)
         self.assertEqual(channel.code, 200)
 
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 1, rooms=[ROOM_ID])]
-        )
+        self.on_new_event.assert_has_calls([call('typing_key', 1, rooms=[ROOM_ID])])
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=0
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=0)
         self.assertEquals(
             events[0],
             [
@@ -247,14 +241,14 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
 
         self.assertEquals(self.event_source.get_current_key(), 0)
 
-        self.successResultOf(self.handler.stopped_typing(
-            target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID
-        ))
-
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 1, rooms=[ROOM_ID])]
+        self.successResultOf(
+            self.handler.stopped_typing(
+                target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID
+            )
         )
 
+        self.on_new_event.assert_has_calls([call('typing_key', 1, rooms=[ROOM_ID])])
+
         put_json = self.hs.get_http_client().put_json
         put_json.assert_called_once_with(
             "farm",
@@ -274,18 +268,10 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
         )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=0
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=0)
         self.assertEquals(
             events[0],
-            [
-                {
-                    "type": "m.typing",
-                    "room_id": ROOM_ID,
-                    "content": {"user_ids": []},
-                }
-            ],
+            [{"type": "m.typing", "room_id": ROOM_ID, "content": {"user_ids": []}}],
         )
 
     def test_typing_timeout(self):
@@ -293,22 +279,17 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
 
         self.assertEquals(self.event_source.get_current_key(), 0)
 
-        self.successResultOf(self.handler.started_typing(
-            target_user=U_APPLE,
-            auth_user=U_APPLE,
-            room_id=ROOM_ID,
-            timeout=10000,
-        ))
-
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 1, rooms=[ROOM_ID])]
+        self.successResultOf(
+            self.handler.started_typing(
+                target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID, timeout=10000
+            )
         )
+
+        self.on_new_event.assert_has_calls([call('typing_key', 1, rooms=[ROOM_ID])])
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 1)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=0
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=0)
         self.assertEquals(
             events[0],
             [
@@ -320,45 +301,30 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
             ],
         )
 
-        self.reactor.pump([16, ])
+        self.reactor.pump([16])
 
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 2, rooms=[ROOM_ID])]
-        )
+        self.on_new_event.assert_has_calls([call('typing_key', 2, rooms=[ROOM_ID])])
 
         self.assertEquals(self.event_source.get_current_key(), 2)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=1
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=1)
         self.assertEquals(
             events[0],
-            [
-                {
-                    "type": "m.typing",
-                    "room_id": ROOM_ID,
-                    "content": {"user_ids": []},
-                }
-            ],
+            [{"type": "m.typing", "room_id": ROOM_ID, "content": {"user_ids": []}}],
         )
 
         # SYN-230 - see if we can still set after timeout
 
-        self.successResultOf(self.handler.started_typing(
-            target_user=U_APPLE,
-            auth_user=U_APPLE,
-            room_id=ROOM_ID,
-            timeout=10000,
-        ))
-
-        self.on_new_event.assert_has_calls(
-            [call('typing_key', 3, rooms=[ROOM_ID])]
+        self.successResultOf(
+            self.handler.started_typing(
+                target_user=U_APPLE, auth_user=U_APPLE, room_id=ROOM_ID, timeout=10000
+            )
         )
+
+        self.on_new_event.assert_has_calls([call('typing_key', 3, rooms=[ROOM_ID])])
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 3)
-        events = self.event_source.get_new_events(
-            room_ids=[ROOM_ID], from_key=0
-        )
+        events = self.event_source.get_new_events(room_ids=[ROOM_ID], from_key=0)
         self.assertEquals(
             events[0],
             [
diff --git a/tests/handlers/test_user_directory.py b/tests/handlers/test_user_directory.py
index f1d0aa42b6..9021e647fe 100644
--- a/tests/handlers/test_user_directory.py
+++ b/tests/handlers/test_user_directory.py
@@ -14,8 +14,9 @@
 # limitations under the License.
 from mock import Mock
 
+import synapse.rest.admin
 from synapse.api.constants import UserTypes
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import user_directory
 from synapse.storage.roommember import ProfileInfo
 
@@ -29,14 +30,14 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
 
     servlets = [
         login.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
     ]
 
     def make_homeserver(self, reactor, clock):
 
         config = self.default_config()
-        config.update_user_directory = True
+        config["update_user_directory"] = True
         return self.setup_test_homeserver(config=config)
 
     def prepare(self, reactor, clock, hs):
@@ -327,12 +328,12 @@ class TestUserDirSearchDisabled(unittest.HomeserverTestCase):
         user_directory.register_servlets,
         room.register_servlets,
         login.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
     ]
 
     def make_homeserver(self, reactor, clock):
         config = self.default_config()
-        config.update_user_directory = True
+        config["update_user_directory"] = True
         hs = self.setup_test_homeserver(config=config)
 
         self.config = hs.config
@@ -351,9 +352,7 @@ class TestUserDirSearchDisabled(unittest.HomeserverTestCase):
 
         # Assert user directory is not empty
         request, channel = self.make_request(
-            "POST",
-            b"user_directory/search",
-            b'{"search_term":"user2"}',
+            "POST", b"user_directory/search", b'{"search_term":"user2"}'
         )
         self.render(request)
         self.assertEquals(200, channel.code, channel.result)
@@ -362,9 +361,7 @@ class TestUserDirSearchDisabled(unittest.HomeserverTestCase):
         # Disable user directory and check search returns nothing
         self.config.user_directory_search_enabled = False
         request, channel = self.make_request(
-            "POST",
-            b"user_directory/search",
-            b'{"search_term":"user2"}',
+            "POST", b"user_directory/search", b'{"search_term":"user2"}'
         )
         self.render(request)
         self.assertEquals(200, channel.code, channel.result)
diff --git a/tests/http/__init__.py b/tests/http/__init__.py
index ee8010f598..2d5dba6464 100644
--- a/tests/http/__init__.py
+++ b/tests/http/__init__.py
@@ -13,30 +13,122 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import os.path
+import subprocess
+
+from zope.interface import implementer
 
 from OpenSSL import SSL
+from OpenSSL.SSL import Connection
+from twisted.internet.interfaces import IOpenSSLServerConnectionCreator
 
 
-def get_test_cert_file():
-    """get the path to the test cert"""
+def get_test_ca_cert_file():
+    """Get the path to the test CA cert
 
-    # the cert file itself is made with:
-    #
-    # openssl req -x509 -newkey rsa:4096 -keyout server.pem  -out server.pem -days 36500 \
-    #     -nodes -subj '/CN=testserv'
-    return os.path.join(
-        os.path.dirname(__file__),
-        'server.pem',
+    The keypair is generated with:
+
+        openssl genrsa -out ca.key 2048
+        openssl req -new -x509 -key ca.key -days 3650 -out ca.crt \
+            -subj '/CN=synapse test CA'
+    """
+    return os.path.join(os.path.dirname(__file__), "ca.crt")
+
+
+def get_test_key_file():
+    """get the path to the test key
+
+    The key file is made with:
+
+        openssl genrsa -out server.key 2048
+    """
+    return os.path.join(os.path.dirname(__file__), "server.key")
+
+
+cert_file_count = 0
+
+CONFIG_TEMPLATE = b"""\
+[default]
+basicConstraints = CA:FALSE
+keyUsage=nonRepudiation, digitalSignature, keyEncipherment
+subjectAltName = %(sanentries)s
+"""
+
+
+def create_test_cert_file(sanlist):
+    """build an x509 certificate file
+
+    Args:
+        sanlist: list[bytes]: a list of subjectAltName values for the cert
+
+    Returns:
+        str: the path to the file
+    """
+    global cert_file_count
+    csr_filename = "server.csr"
+    cnf_filename = "server.%i.cnf" % (cert_file_count,)
+    cert_filename = "server.%i.crt" % (cert_file_count,)
+    cert_file_count += 1
+
+    # first build a CSR
+    subprocess.check_call(
+        [
+            "openssl",
+            "req",
+            "-new",
+            "-key",
+            get_test_key_file(),
+            "-subj",
+            "/",
+            "-out",
+            csr_filename,
+        ]
     )
 
+    # now a config file describing the right SAN entries
+    sanentries = b",".join(sanlist)
+    with open(cnf_filename, "wb") as f:
+        f.write(CONFIG_TEMPLATE % {b"sanentries": sanentries})
 
-class ServerTLSContext(object):
-    """A TLS Context which presents our test cert."""
-    def __init__(self):
-        self.filename = get_test_cert_file()
+    # finally the cert
+    ca_key_filename = os.path.join(os.path.dirname(__file__), "ca.key")
+    ca_cert_filename = get_test_ca_cert_file()
+    subprocess.check_call(
+        [
+            "openssl",
+            "x509",
+            "-req",
+            "-in",
+            csr_filename,
+            "-CA",
+            ca_cert_filename,
+            "-CAkey",
+            ca_key_filename,
+            "-set_serial",
+            "1",
+            "-extfile",
+            cnf_filename,
+            "-out",
+            cert_filename,
+        ]
+    )
 
-    def getContext(self):
+    return cert_filename
+
+
+@implementer(IOpenSSLServerConnectionCreator)
+class TestServerTLSConnectionFactory(object):
+    """An SSL connection creator which returns connections which present a certificate
+    signed by our test CA."""
+
+    def __init__(self, sanlist):
+        """
+        Args:
+            sanlist: list[bytes]: a list of subjectAltName values for the cert
+        """
+        self._cert_file = create_test_cert_file(sanlist)
+
+    def serverConnectionForTLS(self, tlsProtocol):
         ctx = SSL.Context(SSL.TLSv1_METHOD)
-        ctx.use_certificate_file(self.filename)
-        ctx.use_privatekey_file(self.filename)
-        return ctx
+        ctx.use_certificate_file(self._cert_file)
+        ctx.use_privatekey_file(get_test_key_file())
+        return Connection(ctx, None)
diff --git a/tests/http/ca.crt b/tests/http/ca.crt
new file mode 100644
index 0000000000..730f81e99c
--- /dev/null
+++ b/tests/http/ca.crt
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/tests/http/ca.key b/tests/http/ca.key
new file mode 100644
index 0000000000..5c99cae186
--- /dev/null
+++ b/tests/http/ca.key
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
diff --git a/tests/http/federation/test_matrix_federation_agent.py b/tests/http/federation/test_matrix_federation_agent.py
index dcf184d3cf..ecce473b01 100644
--- a/tests/http/federation/test_matrix_federation_agent.py
+++ b/tests/http/federation/test_matrix_federation_agent.py
@@ -17,16 +17,19 @@ import logging
 from mock import Mock
 
 import treq
+from service_identity import VerificationError
 from zope.interface import implementer
 
 from twisted.internet import defer
 from twisted.internet._sslverify import ClientTLSOptions, OpenSSLCertificateOptions
 from twisted.internet.protocol import Factory
 from twisted.protocols.tls import TLSMemoryBIOFactory
+from twisted.web._newclient import ResponseNeverReceived
 from twisted.web.http import HTTPChannel
 from twisted.web.http_headers import Headers
 from twisted.web.iweb import IPolicyForHTTPS
 
+from synapse.config.homeserver import HomeServerConfig
 from synapse.crypto.context_factory import ClientTLSOptionsFactory
 from synapse.http.federation.matrix_federation_agent import (
     MatrixFederationAgent,
@@ -36,12 +39,29 @@ from synapse.http.federation.srv_resolver import Server
 from synapse.util.caches.ttlcache import TTLCache
 from synapse.util.logcontext import LoggingContext
 
-from tests.http import ServerTLSContext
+from tests.http import TestServerTLSConnectionFactory, get_test_ca_cert_file
 from tests.server import FakeTransport, ThreadedMemoryReactorClock
 from tests.unittest import TestCase
+from tests.utils import default_config
 
 logger = logging.getLogger(__name__)
 
+test_server_connection_factory = None
+
+
+def get_connection_factory():
+    # this needs to happen once, but not until we are ready to run the first test
+    global test_server_connection_factory
+    if test_server_connection_factory is None:
+        test_server_connection_factory = TestServerTLSConnectionFactory(sanlist=[
+            b'DNS:testserv',
+            b'DNS:target-server',
+            b'DNS:xn--bcher-kva.com',
+            b'IP:1.2.3.4',
+            b'IP:::1',
+        ])
+    return test_server_connection_factory
+
 
 class MatrixFederationAgentTests(TestCase):
     def setUp(self):
@@ -51,9 +71,16 @@ class MatrixFederationAgentTests(TestCase):
 
         self.well_known_cache = TTLCache("test_cache", timer=self.reactor.seconds)
 
+        config_dict = default_config("test", parse=False)
+        config_dict["federation_custom_ca_list"] = [get_test_ca_cert_file()]
+        # config_dict["trusted_key_servers"] = []
+
+        self._config = config = HomeServerConfig()
+        config.parse_config_dict(config_dict)
+
         self.agent = MatrixFederationAgent(
             reactor=self.reactor,
-            tls_client_options_factory=ClientTLSOptionsFactory(None),
+            tls_client_options_factory=ClientTLSOptionsFactory(config),
             _well_known_tls_policy=TrustingTLSPolicyForHTTPS(),
             _srv_resolver=self.mock_resolver,
             _well_known_cache=self.well_known_cache,
@@ -67,7 +94,7 @@ class MatrixFederationAgentTests(TestCase):
         """
 
         # build the test server
-        server_tls_protocol = _build_test_server()
+        server_tls_protocol = _build_test_server(get_connection_factory())
 
         # now, tell the client protocol factory to build the client protocol (it will be a
         # _WrappingProtocol, around a TLSMemoryBIOProtocol, around an
@@ -78,12 +105,12 @@ class MatrixFederationAgentTests(TestCase):
         # stubbing that out here.
         client_protocol = client_factory.buildProtocol(None)
         client_protocol.makeConnection(
-            FakeTransport(server_tls_protocol, self.reactor, client_protocol),
+            FakeTransport(server_tls_protocol, self.reactor, client_protocol)
         )
 
         # tell the server tls protocol to send its stuff back to the client, too
         server_tls_protocol.makeConnection(
-            FakeTransport(client_protocol, self.reactor, server_tls_protocol),
+            FakeTransport(client_protocol, self.reactor, server_tls_protocol)
         )
 
         # give the reactor a pump to get the TLS juices flowing.
@@ -124,7 +151,7 @@ class MatrixFederationAgentTests(TestCase):
                 _check_logcontext(context)
 
     def _handle_well_known_connection(
-        self, client_factory, expected_sni, content, response_headers={},
+        self, client_factory, expected_sni, content, response_headers={}
     ):
         """Handle an outgoing HTTPs connection: wire it up to a server, check that the
         request is for a .well-known, and send the response.
@@ -138,8 +165,7 @@ class MatrixFederationAgentTests(TestCase):
         """
         # make the connection for .well-known
         well_known_server = self._make_connection(
-            client_factory,
-            expected_sni=expected_sni,
+            client_factory, expected_sni=expected_sni
         )
         # check the .well-known request and send a response
         self.assertEqual(len(well_known_server.requests), 1)
@@ -153,17 +179,14 @@ class MatrixFederationAgentTests(TestCase):
         """
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/.well-known/matrix/server')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'testserv'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'testserv'])
         # send back a response
         for k, v in headers.items():
             request.setHeader(k, v)
         request.write(content)
         request.finish()
 
-        self.reactor.pump((0.1, ))
+        self.reactor.pump((0.1,))
 
     def test_get(self):
         """
@@ -183,18 +206,14 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8448)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=b"testserv",
-        )
+        http_server = self._make_connection(client_factory, expected_sni=b"testserv")
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'testserv:8448']
+            request.requestHeaders.getRawHeaders(b'host'), [b'testserv:8448']
         )
         content = request.content.read()
         self.assertEqual(content, b'')
@@ -243,19 +262,13 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8448)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=None,
-        )
+        http_server = self._make_connection(client_factory, expected_sni=None)
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'1.2.3.4'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'1.2.3.4'])
 
         # finish the request
         request.finish()
@@ -284,19 +297,13 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8448)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=None,
-        )
+        http_server = self._make_connection(client_factory, expected_sni=None)
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'[::1]'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'[::1]'])
 
         # finish the request
         request.finish()
@@ -325,25 +332,101 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 80)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=None,
-        )
+        http_server = self._make_connection(client_factory, expected_sni=None)
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'[::1]:80'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'[::1]:80'])
 
         # finish the request
         request.finish()
         self.reactor.pump((0.1,))
         self.successResultOf(test_d)
 
+    def test_get_hostname_bad_cert(self):
+        """
+        Test the behaviour when the certificate on the server doesn't match the hostname
+        """
+        self.mock_resolver.resolve_service.side_effect = lambda _: []
+        self.reactor.lookups["testserv1"] = "1.2.3.4"
+
+        test_d = self._make_get_request(b"matrix://testserv1/foo/bar")
+
+        # Nothing happened yet
+        self.assertNoResult(test_d)
+
+        # No SRV record lookup yet
+        self.mock_resolver.resolve_service.assert_not_called()
+
+        # there should be an attempt to connect on port 443 for the .well-known
+        clients = self.reactor.tcpClients
+        self.assertEqual(len(clients), 1)
+        (host, port, client_factory, _timeout, _bindAddress) = clients[0]
+        self.assertEqual(host, '1.2.3.4')
+        self.assertEqual(port, 443)
+
+        # fonx the connection
+        client_factory.clientConnectionFailed(None, Exception("nope"))
+
+        # attemptdelay on the hostnameendpoint is 0.3, so takes that long before the
+        # .well-known request fails.
+        self.reactor.pump((0.4,))
+
+        # now there should be a SRV lookup
+        self.mock_resolver.resolve_service.assert_called_once_with(
+            b"_matrix._tcp.testserv1"
+        )
+
+        # we should fall back to a direct connection
+        self.assertEqual(len(clients), 2)
+        (host, port, client_factory, _timeout, _bindAddress) = clients[1]
+        self.assertEqual(host, '1.2.3.4')
+        self.assertEqual(port, 8448)
+
+        # make a test server, and wire up the client
+        http_server = self._make_connection(client_factory, expected_sni=b'testserv1')
+
+        # there should be no requests
+        self.assertEqual(len(http_server.requests), 0)
+
+        # ... and the request should have failed
+        e = self.failureResultOf(test_d, ResponseNeverReceived)
+        failure_reason = e.value.reasons[0]
+        self.assertIsInstance(failure_reason.value, VerificationError)
+
+    def test_get_ip_address_bad_cert(self):
+        """
+        Test the behaviour when the server name contains an explicit IP, but
+        the server cert doesn't cover it
+        """
+        # there will be a getaddrinfo on the IP
+        self.reactor.lookups["1.2.3.5"] = "1.2.3.5"
+
+        test_d = self._make_get_request(b"matrix://1.2.3.5/foo/bar")
+
+        # Nothing happened yet
+        self.assertNoResult(test_d)
+
+        # Make sure treq is trying to connect
+        clients = self.reactor.tcpClients
+        self.assertEqual(len(clients), 1)
+        (host, port, client_factory, _timeout, _bindAddress) = clients[0]
+        self.assertEqual(host, '1.2.3.5')
+        self.assertEqual(port, 8448)
+
+        # make a test server, and wire up the client
+        http_server = self._make_connection(client_factory, expected_sni=None)
+
+        # there should be no requests
+        self.assertEqual(len(http_server.requests), 0)
+
+        # ... and the request should have failed
+        e = self.failureResultOf(test_d, ResponseNeverReceived)
+        failure_reason = e.value.reasons[0]
+        self.assertIsInstance(failure_reason.value, VerificationError)
+
     def test_get_no_srv_no_well_known(self):
         """
         Test the behaviour when the server name has no port, no SRV, and no well-known
@@ -376,7 +459,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # now there should be a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.testserv",
+            b"_matrix._tcp.testserv"
         )
 
         # we should fall back to a direct connection
@@ -386,19 +469,13 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8448)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'testserv',
-        )
+        http_server = self._make_connection(client_factory, expected_sni=b'testserv')
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'testserv'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'testserv'])
 
         # finish the request
         request.finish()
@@ -426,13 +503,14 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 443)
 
         self._handle_well_known_connection(
-            client_factory, expected_sni=b"testserv",
+            client_factory,
+            expected_sni=b"testserv",
             content=b'{ "m.server": "target-server" }',
         )
 
         # there should be a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.target-server",
+            b"_matrix._tcp.target-server"
         )
 
         # now we should get a connection to the target server
@@ -443,8 +521,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # make a test server, and wire up the client
         http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'target-server',
+            client_factory, expected_sni=b'target-server'
         )
 
         self.assertEqual(len(http_server.requests), 1)
@@ -452,8 +529,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'target-server'],
+            request.requestHeaders.getRawHeaders(b'host'), [b'target-server']
         )
 
         # finish the request
@@ -489,8 +565,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 443)
 
         redirect_server = self._make_connection(
-            client_factory,
-            expected_sni=b"testserv",
+            client_factory, expected_sni=b"testserv"
         )
 
         # send a 302 redirect
@@ -499,7 +574,7 @@ class MatrixFederationAgentTests(TestCase):
         request.redirect(b'https://testserv/even_better_known')
         request.finish()
 
-        self.reactor.pump((0.1, ))
+        self.reactor.pump((0.1,))
 
         # now there should be another connection
         clients = self.reactor.tcpClients
@@ -509,8 +584,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 443)
 
         well_known_server = self._make_connection(
-            client_factory,
-            expected_sni=b"testserv",
+            client_factory, expected_sni=b"testserv"
         )
 
         self.assertEqual(len(well_known_server.requests), 1, "No request after 302")
@@ -520,11 +594,11 @@ class MatrixFederationAgentTests(TestCase):
         request.write(b'{ "m.server": "target-server" }')
         request.finish()
 
-        self.reactor.pump((0.1, ))
+        self.reactor.pump((0.1,))
 
         # there should be a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.target-server",
+            b"_matrix._tcp.target-server"
         )
 
         # now we should get a connection to the target server
@@ -535,8 +609,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # make a test server, and wire up the client
         http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'target-server',
+            client_factory, expected_sni=b'target-server'
         )
 
         self.assertEqual(len(http_server.requests), 1)
@@ -544,8 +617,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'target-server'],
+            request.requestHeaders.getRawHeaders(b'host'), [b'target-server']
         )
 
         # finish the request
@@ -584,12 +656,12 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 443)
 
         self._handle_well_known_connection(
-            client_factory, expected_sni=b"testserv", content=b'NOT JSON',
+            client_factory, expected_sni=b"testserv", content=b'NOT JSON'
         )
 
         # now there should be a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.testserv",
+            b"_matrix._tcp.testserv"
         )
 
         # we should fall back to a direct connection
@@ -599,25 +671,62 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8448)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'testserv',
-        )
+        http_server = self._make_connection(client_factory, expected_sni=b'testserv')
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'testserv'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'testserv'])
 
         # finish the request
         request.finish()
         self.reactor.pump((0.1,))
         self.successResultOf(test_d)
 
+    def test_get_well_known_unsigned_cert(self):
+        """Test the behaviour when the .well-known server presents a cert
+        not signed by a CA
+        """
+
+        # we use the same test server as the other tests, but use an agent
+        # with _well_known_tls_policy left to the default, which will not
+        # trust it (since the presented cert is signed by a test CA)
+
+        self.mock_resolver.resolve_service.side_effect = lambda _: []
+        self.reactor.lookups["testserv"] = "1.2.3.4"
+
+        agent = MatrixFederationAgent(
+            reactor=self.reactor,
+            tls_client_options_factory=ClientTLSOptionsFactory(self._config),
+            _srv_resolver=self.mock_resolver,
+            _well_known_cache=self.well_known_cache,
+        )
+
+        test_d = agent.request(b"GET", b"matrix://testserv/foo/bar")
+
+        # Nothing happened yet
+        self.assertNoResult(test_d)
+
+        # there should be an attempt to connect on port 443 for the .well-known
+        clients = self.reactor.tcpClients
+        self.assertEqual(len(clients), 1)
+        (host, port, client_factory, _timeout, _bindAddress) = clients[0]
+        self.assertEqual(host, '1.2.3.4')
+        self.assertEqual(port, 443)
+
+        http_proto = self._make_connection(
+            client_factory, expected_sni=b"testserv",
+        )
+
+        # there should be no requests
+        self.assertEqual(len(http_proto.requests), 0)
+
+        # and there should be a SRV lookup instead
+        self.mock_resolver.resolve_service.assert_called_once_with(
+            b"_matrix._tcp.testserv"
+        )
+
     def test_get_hostname_srv(self):
         """
         Test the behaviour when there is a single SRV record
@@ -634,7 +743,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # the request for a .well-known will have failed with a DNS lookup error.
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.testserv",
+            b"_matrix._tcp.testserv"
         )
 
         # Make sure treq is trying to connect
@@ -645,19 +754,13 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 8443)
 
         # make a test server, and wire up the client
-        http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'testserv',
-        )
+        http_server = self._make_connection(client_factory, expected_sni=b'testserv')
 
         self.assertEqual(len(http_server.requests), 1)
         request = http_server.requests[0]
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
-        self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'testserv'],
-        )
+        self.assertEqual(request.requestHeaders.getRawHeaders(b'host'), [b'testserv'])
 
         # finish the request
         request.finish()
@@ -684,17 +787,18 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(port, 443)
 
         self.mock_resolver.resolve_service.side_effect = lambda _: [
-            Server(host=b"srvtarget", port=8443),
+            Server(host=b"srvtarget", port=8443)
         ]
 
         self._handle_well_known_connection(
-            client_factory, expected_sni=b"testserv",
+            client_factory,
+            expected_sni=b"testserv",
             content=b'{ "m.server": "target-server" }',
         )
 
         # there should be a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.target-server",
+            b"_matrix._tcp.target-server"
         )
 
         # now we should get a connection to the target of the SRV record
@@ -705,8 +809,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # make a test server, and wire up the client
         http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'target-server',
+            client_factory, expected_sni=b'target-server'
         )
 
         self.assertEqual(len(http_server.requests), 1)
@@ -714,8 +817,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'target-server'],
+            request.requestHeaders.getRawHeaders(b'host'), [b'target-server']
         )
 
         # finish the request
@@ -756,7 +858,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # now there should have been a SRV lookup
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.xn--bcher-kva.com",
+            b"_matrix._tcp.xn--bcher-kva.com"
         )
 
         # We should fall back to port 8448
@@ -768,8 +870,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # make a test server, and wire up the client
         http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'xn--bcher-kva.com',
+            client_factory, expected_sni=b'xn--bcher-kva.com'
         )
 
         self.assertEqual(len(http_server.requests), 1)
@@ -777,8 +878,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'xn--bcher-kva.com'],
+            request.requestHeaders.getRawHeaders(b'host'), [b'xn--bcher-kva.com']
         )
 
         # finish the request
@@ -800,7 +900,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertNoResult(test_d)
 
         self.mock_resolver.resolve_service.assert_called_once_with(
-            b"_matrix._tcp.xn--bcher-kva.com",
+            b"_matrix._tcp.xn--bcher-kva.com"
         )
 
         # Make sure treq is trying to connect
@@ -812,8 +912,7 @@ class MatrixFederationAgentTests(TestCase):
 
         # make a test server, and wire up the client
         http_server = self._make_connection(
-            client_factory,
-            expected_sni=b'xn--bcher-kva.com',
+            client_factory, expected_sni=b'xn--bcher-kva.com'
         )
 
         self.assertEqual(len(http_server.requests), 1)
@@ -821,8 +920,7 @@ class MatrixFederationAgentTests(TestCase):
         self.assertEqual(request.method, b'GET')
         self.assertEqual(request.path, b'/foo/bar')
         self.assertEqual(
-            request.requestHeaders.getRawHeaders(b'host'),
-            [b'xn--bcher-kva.com'],
+            request.requestHeaders.getRawHeaders(b'host'), [b'xn--bcher-kva.com']
         )
 
         # finish the request
@@ -896,74 +994,83 @@ class TestCachePeriodFromHeaders(TestCase):
         # uppercase
         self.assertEqual(
             _cache_period_from_headers(
-                Headers({b'Cache-Control': [b'foo, Max-Age = 100, bar']}),
-            ), 100,
+                Headers({b'Cache-Control': [b'foo, Max-Age = 100, bar']})
+            ),
+            100,
         )
 
         # missing value
-        self.assertIsNone(_cache_period_from_headers(
-            Headers({b'Cache-Control': [b'max-age=, bar']}),
-        ))
+        self.assertIsNone(
+            _cache_period_from_headers(Headers({b'Cache-Control': [b'max-age=, bar']}))
+        )
 
         # hackernews: bogus due to semicolon
-        self.assertIsNone(_cache_period_from_headers(
-            Headers({b'Cache-Control': [b'private; max-age=0']}),
-        ))
+        self.assertIsNone(
+            _cache_period_from_headers(
+                Headers({b'Cache-Control': [b'private; max-age=0']})
+            )
+        )
 
         # github
         self.assertEqual(
             _cache_period_from_headers(
-                Headers({b'Cache-Control': [b'max-age=0, private, must-revalidate']}),
-            ), 0,
+                Headers({b'Cache-Control': [b'max-age=0, private, must-revalidate']})
+            ),
+            0,
         )
 
         # google
         self.assertEqual(
             _cache_period_from_headers(
-                Headers({b'cache-control': [b'private, max-age=0']}),
-            ), 0,
+                Headers({b'cache-control': [b'private, max-age=0']})
+            ),
+            0,
         )
 
     def test_expires(self):
         self.assertEqual(
             _cache_period_from_headers(
                 Headers({b'Expires': [b'Wed, 30 Jan 2019 07:35:33 GMT']}),
-                time_now=lambda: 1548833700
-            ), 33,
+                time_now=lambda: 1548833700,
+            ),
+            33,
         )
 
         # cache-control overrides expires
         self.assertEqual(
             _cache_period_from_headers(
-                Headers({
-                    b'cache-control': [b'max-age=10'],
-                    b'Expires': [b'Wed, 30 Jan 2019 07:35:33 GMT']
-                }),
-                time_now=lambda: 1548833700
-            ), 10,
+                Headers(
+                    {
+                        b'cache-control': [b'max-age=10'],
+                        b'Expires': [b'Wed, 30 Jan 2019 07:35:33 GMT'],
+                    }
+                ),
+                time_now=lambda: 1548833700,
+            ),
+            10,
         )
 
         # invalid expires means immediate expiry
-        self.assertEqual(
-            _cache_period_from_headers(
-                Headers({b'Expires': [b'0']}),
-            ), 0,
-        )
+        self.assertEqual(_cache_period_from_headers(Headers({b'Expires': [b'0']})), 0)
 
 
 def _check_logcontext(context):
     current = LoggingContext.current_context()
     if current is not context:
-        raise AssertionError(
-            "Expected logcontext %s but was %s" % (context, current),
-        )
+        raise AssertionError("Expected logcontext %s but was %s" % (context, current))
 
 
-def _build_test_server():
+def _build_test_server(connection_creator):
     """Construct a test server
 
     This builds an HTTP channel, wrapped with a TLSMemoryBIOProtocol
 
+    Args:
+        connection_creator (IOpenSSLServerConnectionCreator): thing to build
+            SSL connections
+        sanlist (list[bytes]): list of the SAN entries for the cert returned
+            by the server
+
     Returns:
         TLSMemoryBIOProtocol
     """
@@ -972,7 +1079,7 @@ def _build_test_server():
     server_factory.log = _log_request
 
     server_tls_factory = TLSMemoryBIOFactory(
-        ServerTLSContext(), isClient=False, wrappedFactory=server_factory,
+        connection_creator, isClient=False, wrappedFactory=server_factory
     )
 
     return server_tls_factory.buildProtocol(None)
@@ -985,7 +1092,9 @@ def _log_request(request):
 
 @implementer(IPolicyForHTTPS)
 class TrustingTLSPolicyForHTTPS(object):
-    """An IPolicyForHTTPS which doesn't do any certificate verification"""
+    """An IPolicyForHTTPS which checks that the certificate belongs to the
+    right server, but doesn't check the certificate chain."""
+
     def creatorForNetloc(self, hostname, port):
         certificateOptions = OpenSSLCertificateOptions()
         return ClientTLSOptions(hostname, certificateOptions.getContext())
diff --git a/tests/http/federation/test_srv_resolver.py b/tests/http/federation/test_srv_resolver.py
index a872e2441e..034c0db8d2 100644
--- a/tests/http/federation/test_srv_resolver.py
+++ b/tests/http/federation/test_srv_resolver.py
@@ -68,9 +68,7 @@ class SrvResolverTestCase(unittest.TestCase):
 
         dns_client_mock.lookupService.assert_called_once_with(service_name)
 
-        result_deferred.callback(
-            ([answer_srv], None, None)
-        )
+        result_deferred.callback(([answer_srv], None, None))
 
         servers = self.successResultOf(test_d)
 
@@ -112,7 +110,7 @@ class SrvResolverTestCase(unittest.TestCase):
 
         cache = {service_name: [entry]}
         resolver = SrvResolver(
-            dns_client=dns_client_mock, cache=cache, get_time=clock.time,
+            dns_client=dns_client_mock, cache=cache, get_time=clock.time
         )
 
         servers = yield resolver.resolve_service(service_name)
@@ -168,11 +166,13 @@ class SrvResolverTestCase(unittest.TestCase):
         self.assertNoResult(resolve_d)
 
         # returning a single "." should make the lookup fail with a ConenctError
-        lookup_deferred.callback((
-            [dns.RRHeader(type=dns.SRV, payload=dns.Record_SRV(target=b"."))],
-            None,
-            None,
-        ))
+        lookup_deferred.callback(
+            (
+                [dns.RRHeader(type=dns.SRV, payload=dns.Record_SRV(target=b"."))],
+                None,
+                None,
+            )
+        )
 
         self.failureResultOf(resolve_d, ConnectError)
 
@@ -191,14 +191,16 @@ class SrvResolverTestCase(unittest.TestCase):
         resolve_d = resolver.resolve_service(service_name)
         self.assertNoResult(resolve_d)
 
-        lookup_deferred.callback((
-            [
-                dns.RRHeader(type=dns.A, payload=dns.Record_A()),
-                dns.RRHeader(type=dns.SRV, payload=dns.Record_SRV(target=b"host")),
-            ],
-            None,
-            None,
-        ))
+        lookup_deferred.callback(
+            (
+                [
+                    dns.RRHeader(type=dns.A, payload=dns.Record_A()),
+                    dns.RRHeader(type=dns.SRV, payload=dns.Record_SRV(target=b"host")),
+                ],
+                None,
+                None,
+            )
+        )
 
         servers = self.successResultOf(resolve_d)
 
diff --git a/tests/http/server.key b/tests/http/server.key
new file mode 100644
index 0000000000..c53ee02b21
--- /dev/null
+++ b/tests/http/server.key
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+LQe9KNSK2VuMUP1j4G04M9BxAoGAWe8ITZJuytZOgrz/YIohqPvj1l2tcIYA1a6C
+7xEFSMIIxtpZIWSLZIFJEsCakpHBkPX4iwIveZfmt/JrM1JFTWK6ZZVGyh/BmOIZ
+Bg4lU1oBqJTUo+aZQtTCJS29b2n5OPpkNYkXTdP4e9UsVKNDvfPlYZJneUeEzxDr
+bqCPIRECgYA544KMwrWxDQZg1dsKWgdVVKx80wEFZAiQr9+0KF6ch6Iu7lwGJHFY
+iI6O85paX41qeC/Fo+feIWJVJU2GvG6eBsbO4bmq+KSg4NkABJSYxodgBp9ftNeD
+jo1tfw+gudlNe5jXHu7oSX93tqGjR4Cnlgan/KtfkB96yHOumGmOhQ==
+-----END RSA PRIVATE KEY-----
diff --git a/tests/http/server.pem b/tests/http/server.pem
deleted file mode 100644
index 0584cf1a80..0000000000
--- a/tests/http/server.pem
+++ /dev/null
@@ -1,81 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQCgF43/3lAgJ+p0
-x7Rn8UcL8a4fctvdkikvZrCngw96LkB34Evfq8YGWlOVjU+f9naUJLAKMatmAfEN
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-KILVFsq3cQC+bEnoM4eVbjEQkGs1RQ==
------END PRIVATE KEY-----
------BEGIN CERTIFICATE-----
-MIIE/jCCAuagAwIBAgIJANFtVaGvJWZlMA0GCSqGSIb3DQEBCwUAMBMxETAPBgNV
-BAMMCHRlc3RzZXJ2MCAXDTE5MDEyNzIyMDIzNloYDzIxMTkwMTAzMjIwMjM2WjAT
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-a6XrNC+PY6pONguo7rEU4HiwbvnawSTngFFglmH/ImdA/HkaAekW6o82aI8/UxFx
-V9fFMO3iKDQdOrg77hI1bx9RlzKNZZinE2/Pu26fWd5d2zqDWCjl8ykGQRAfXgYN
-H3BjgyXLl+ao5/pOUYYtzm3ruTXTgRcy5hhL6hVTYhSrf9vYh4LNIeXNKnZ78tyG
-TX77/kU2qXhBGCFEUUMqUNV/+ITir2lmoxVjknt19M07aGr8C7SgYt6Rs+qDpMiy
-JurgvRh8LpVq4pHx1efxzxCFmo58DMrG40I0+CF3y/niNpOb1gp2wAqByRiORkds
-f0ytW6qZ0TpHbD6gOtQLYDnhx3ISuX+QYSekVwQUpffeWQ==
------END CERTIFICATE-----
diff --git a/tests/http/test_fedclient.py b/tests/http/test_fedclient.py
index cd8e086f86..ee767f3a5a 100644
--- a/tests/http/test_fedclient.py
+++ b/tests/http/test_fedclient.py
@@ -15,6 +15,8 @@
 
 from mock import Mock
 
+from netaddr import IPSet
+
 from twisted.internet import defer
 from twisted.internet.defer import TimeoutError
 from twisted.internet.error import ConnectingCancelledError, DNSLookupError
@@ -36,9 +38,7 @@ from tests.unittest import HomeserverTestCase
 def check_logcontext(context):
     current = LoggingContext.current_context()
     if current is not context:
-        raise AssertionError(
-            "Expected logcontext %s but was %s" % (context, current),
-        )
+        raise AssertionError("Expected logcontext %s but was %s" % (context, current))
 
 
 class FederationClientTests(HomeserverTestCase):
@@ -54,6 +54,7 @@ class FederationClientTests(HomeserverTestCase):
         """
         happy-path test of a GET request
         """
+
         @defer.inlineCallbacks
         def do_request():
             with LoggingContext("one") as context:
@@ -175,8 +176,7 @@ class FederationClientTests(HomeserverTestCase):
 
         self.assertIsInstance(f.value, RequestSendFailed)
         self.assertIsInstance(
-            f.value.inner_exception,
-            (ConnectingCancelledError, TimeoutError),
+            f.value.inner_exception, (ConnectingCancelledError, TimeoutError)
         )
 
     def test_client_connect_no_response(self):
@@ -211,14 +211,81 @@ class FederationClientTests(HomeserverTestCase):
         self.assertIsInstance(f.value, RequestSendFailed)
         self.assertIsInstance(f.value.inner_exception, ResponseNeverReceived)
 
+    def test_client_ip_range_blacklist(self):
+        """Ensure that Synapse does not try to connect to blacklisted IPs"""
+
+        # Set up the ip_range blacklist
+        self.hs.config.federation_ip_range_blacklist = IPSet([
+            "127.0.0.0/8",
+            "fe80::/64",
+        ])
+        self.reactor.lookups["internal"] = "127.0.0.1"
+        self.reactor.lookups["internalv6"] = "fe80:0:0:0:0:8a2e:370:7337"
+        self.reactor.lookups["fine"] = "10.20.30.40"
+        cl = MatrixFederationHttpClient(self.hs, None)
+
+        # Try making a GET request to a blacklisted IPv4 address
+        # ------------------------------------------------------
+        # Make the request
+        d = cl.get_json("internal:8008", "foo/bar", timeout=10000)
+
+        # Nothing happened yet
+        self.assertNoResult(d)
+
+        self.pump(1)
+
+        # Check that it was unable to resolve the address
+        clients = self.reactor.tcpClients
+        self.assertEqual(len(clients), 0)
+
+        f = self.failureResultOf(d)
+        self.assertIsInstance(f.value, RequestSendFailed)
+        self.assertIsInstance(f.value.inner_exception, DNSLookupError)
+
+        # Try making a POST request to a blacklisted IPv6 address
+        # -------------------------------------------------------
+        # Make the request
+        d = cl.post_json("internalv6:8008", "foo/bar", timeout=10000)
+
+        # Nothing has happened yet
+        self.assertNoResult(d)
+
+        # Move the reactor forwards
+        self.pump(1)
+
+        # Check that it was unable to resolve the address
+        clients = self.reactor.tcpClients
+        self.assertEqual(len(clients), 0)
+
+        # Check that it was due to a blacklisted DNS lookup
+        f = self.failureResultOf(d, RequestSendFailed)
+        self.assertIsInstance(f.value.inner_exception, DNSLookupError)
+
+        # Try making a GET request to a non-blacklisted IPv4 address
+        # ----------------------------------------------------------
+        # Make the request
+        d = cl.post_json("fine:8008", "foo/bar", timeout=10000)
+
+        # Nothing has happened yet
+        self.assertNoResult(d)
+
+        # Move the reactor forwards
+        self.pump(1)
+
+        # Check that it was able to resolve the address
+        clients = self.reactor.tcpClients
+        self.assertNotEqual(len(clients), 0)
+
+        # Connection will still fail as this IP address does not resolve to anything
+        f = self.failureResultOf(d, RequestSendFailed)
+        self.assertIsInstance(f.value.inner_exception, ConnectingCancelledError)
+
     def test_client_gets_headers(self):
         """
         Once the client gets the headers, _request returns successfully.
         """
         request = MatrixFederationRequest(
-            method="GET",
-            destination="testserv:8008",
-            path="foo/bar",
+            method="GET", destination="testserv:8008", path="foo/bar"
         )
         d = self.cl._send_request(request, timeout=10000)
 
@@ -258,8 +325,10 @@ class FederationClientTests(HomeserverTestCase):
 
         # Send it the HTTP response
         client.dataReceived(
-            (b"HTTP/1.1 200 OK\r\nContent-Type: application/json\r\n"
-             b"Server: Fake\r\n\r\n")
+            (
+                b"HTTP/1.1 200 OK\r\nContent-Type: application/json\r\n"
+                b"Server: Fake\r\n\r\n"
+            )
         )
 
         # Push by enough to time it out
@@ -274,9 +343,7 @@ class FederationClientTests(HomeserverTestCase):
         requiring a trailing slash. We need to retry the request with a
         trailing slash. Workaround for Synapse <= v0.99.3, explained in #3622.
         """
-        d = self.cl.get_json(
-            "testserv:8008", "foo/bar", try_trailing_slash_on_400=True,
-        )
+        d = self.cl.get_json("testserv:8008", "foo/bar", try_trailing_slash_on_400=True)
 
         # Send the request
         self.pump()
@@ -329,9 +396,7 @@ class FederationClientTests(HomeserverTestCase):
 
         See test_client_requires_trailing_slashes() for context.
         """
-        d = self.cl.get_json(
-            "testserv:8008", "foo/bar", try_trailing_slash_on_400=True,
-        )
+        d = self.cl.get_json("testserv:8008", "foo/bar", try_trailing_slash_on_400=True)
 
         # Send the request
         self.pump()
@@ -368,10 +433,7 @@ class FederationClientTests(HomeserverTestCase):
         self.failureResultOf(d)
 
     def test_client_sends_body(self):
-        self.cl.post_json(
-            "testserv:8008", "foo/bar", timeout=10000,
-            data={"a": "b"}
-        )
+        self.cl.post_json("testserv:8008", "foo/bar", timeout=10000, data={"a": "b"})
 
         self.pump()
 
diff --git a/tests/patch_inline_callbacks.py b/tests/patch_inline_callbacks.py
index 0f613945c8..ee0add3455 100644
--- a/tests/patch_inline_callbacks.py
+++ b/tests/patch_inline_callbacks.py
@@ -45,7 +45,9 @@ def do_patch():
             except Exception:
                 if LoggingContext.current_context() != start_context:
                     err = "%s changed context from %s to %s on exception" % (
-                        f, start_context, LoggingContext.current_context()
+                        f,
+                        start_context,
+                        LoggingContext.current_context(),
                     )
                     print(err, file=sys.stderr)
                     raise Exception(err)
@@ -54,7 +56,9 @@ def do_patch():
             if not isinstance(res, Deferred) or res.called:
                 if LoggingContext.current_context() != start_context:
                     err = "%s changed context from %s to %s" % (
-                        f, start_context, LoggingContext.current_context()
+                        f,
+                        start_context,
+                        LoggingContext.current_context(),
                     )
                     # print the error to stderr because otherwise all we
                     # see in travis-ci is the 500 error
@@ -66,9 +70,7 @@ def do_patch():
                 err = (
                     "%s returned incomplete deferred in non-sentinel context "
                     "%s (start was %s)"
-                ) % (
-                    f, LoggingContext.current_context(), start_context,
-                )
+                ) % (f, LoggingContext.current_context(), start_context)
                 print(err, file=sys.stderr)
                 raise Exception(err)
 
@@ -76,7 +78,9 @@ def do_patch():
                 if LoggingContext.current_context() != start_context:
                     err = "%s completion of %s changed context from %s to %s" % (
                         "Failure" if isinstance(r, Failure) else "Success",
-                        f, start_context, LoggingContext.current_context(),
+                        f,
+                        start_context,
+                        LoggingContext.current_context(),
                     )
                     print(err, file=sys.stderr)
                     raise Exception(err)
diff --git a/tests/push/test_email.py b/tests/push/test_email.py
index be3fed8de3..72760a0733 100644
--- a/tests/push/test_email.py
+++ b/tests/push/test_email.py
@@ -15,25 +15,28 @@
 
 import os
 
+import attr
 import pkg_resources
 
 from twisted.internet.defer import Deferred
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 
 from tests.unittest import HomeserverTestCase
 
-try:
-    from synapse.push.mailer import load_jinja2_templates
-except Exception:
-    load_jinja2_templates = None
+
+@attr.s
+class _User(object):
+    "Helper wrapper for user ID and access token"
+    id = attr.ib()
+    token = attr.ib()
 
 
 class EmailPusherTests(HomeserverTestCase):
 
-    skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
@@ -51,46 +54,57 @@ class EmailPusherTests(HomeserverTestCase):
             return d
 
         config = self.default_config()
-        config.email_enable_notifs = True
-        config.start_pushers = True
-
-        config.email_template_dir = os.path.abspath(
-            pkg_resources.resource_filename('synapse', 'res/templates')
-        )
-        config.email_notif_template_html = "notif_mail.html"
-        config.email_notif_template_text = "notif_mail.txt"
-        config.email_smtp_host = "127.0.0.1"
-        config.email_smtp_port = 20
-        config.require_transport_security = False
-        config.email_smtp_user = None
-        config.email_smtp_pass = None
-        config.email_app_name = "Matrix"
-        config.email_notif_from = "test@example.com"
-        config.email_riot_base_url = None
+        config["email"] = {
+            "enable_notifs": True,
+            "template_dir": os.path.abspath(
+                pkg_resources.resource_filename('synapse', 'res/templates')
+            ),
+            "expiry_template_html": "notice_expiry.html",
+            "expiry_template_text": "notice_expiry.txt",
+            "notif_template_html": "notif_mail.html",
+            "notif_template_text": "notif_mail.txt",
+            "smtp_host": "127.0.0.1",
+            "smtp_port": 20,
+            "require_transport_security": False,
+            "smtp_user": None,
+            "smtp_pass": None,
+            "app_name": "Matrix",
+            "notif_from": "test@example.com",
+            "riot_base_url": None,
+        }
+        config["public_baseurl"] = "aaa"
+        config["start_pushers"] = True
 
         hs = self.setup_test_homeserver(config=config, sendmail=sendmail)
 
         return hs
 
-    def test_sends_email(self):
-
+    def prepare(self, reactor, clock, hs):
         # Register the user who gets notified
-        user_id = self.register_user("user", "pass")
-        access_token = self.login("user", "pass")
+        self.user_id = self.register_user("user", "pass")
+        self.access_token = self.login("user", "pass")
 
-        # Register the user who sends the message
-        other_user_id = self.register_user("otheruser", "pass")
-        other_access_token = self.login("otheruser", "pass")
+        # Register other users
+        self.others = [
+            _User(
+                id=self.register_user("otheruser1", "pass"),
+                token=self.login("otheruser1", "pass"),
+            ),
+            _User(
+                id=self.register_user("otheruser2", "pass"),
+                token=self.login("otheruser2", "pass"),
+            ),
+        ]
 
         # Register the pusher
         user_tuple = self.get_success(
-            self.hs.get_datastore().get_user_by_access_token(access_token)
+            self.hs.get_datastore().get_user_by_access_token(self.access_token)
         )
         token_id = user_tuple["token_id"]
 
-        self.get_success(
+        self.pusher = self.get_success(
             self.hs.get_pusherpool().add_pusher(
-                user_id=user_id,
+                user_id=self.user_id,
                 access_token=token_id,
                 kind="email",
                 app_id="m.email",
@@ -102,22 +116,54 @@ class EmailPusherTests(HomeserverTestCase):
             )
         )
 
-        # Create a room
-        room = self.helper.create_room_as(user_id, tok=access_token)
-
-        # Invite the other person
-        self.helper.invite(room=room, src=user_id, tok=access_token, targ=other_user_id)
-
-        # The other user joins
-        self.helper.join(room=room, user=other_user_id, tok=other_access_token)
+    def test_simple_sends_email(self):
+        # Create a simple room with two users
+        room = self.helper.create_room_as(self.user_id, tok=self.access_token)
+        self.helper.invite(
+            room=room, src=self.user_id, tok=self.access_token, targ=self.others[0].id,
+        )
+        self.helper.join(room=room, user=self.others[0].id, tok=self.others[0].token)
 
         # The other user sends some messages
-        self.helper.send(room, body="Hi!", tok=other_access_token)
-        self.helper.send(room, body="There!", tok=other_access_token)
+        self.helper.send(room, body="Hi!", tok=self.others[0].token)
+        self.helper.send(room, body="There!", tok=self.others[0].token)
+
+        # We should get emailed about that message
+        self._check_for_mail()
+
+    def test_multiple_members_email(self):
+        # We want to test multiple notifications, so we pause processing of push
+        # while we send messages.
+        self.pusher._pause_processing()
+
+        # Create a simple room with multiple other users
+        room = self.helper.create_room_as(self.user_id, tok=self.access_token)
+
+        for other in self.others:
+            self.helper.invite(
+                room=room, src=self.user_id, tok=self.access_token, targ=other.id,
+            )
+            self.helper.join(room=room, user=other.id, tok=other.token)
+
+        # The other users send some messages
+        self.helper.send(room, body="Hi!", tok=self.others[0].token)
+        self.helper.send(room, body="There!", tok=self.others[1].token)
+        self.helper.send(room, body="There!", tok=self.others[1].token)
+
+        # Nothing should have happened yet, as we're paused.
+        assert not self.email_attempts
+
+        self.pusher._resume_processing()
+
+        # We should get emailed about those messages
+        self._check_for_mail()
+
+    def _check_for_mail(self):
+        "Check that the user receives an email notification"
 
         # Get the stream ordering before it gets sent
         pushers = self.get_success(
-            self.hs.get_datastore().get_pushers_by(dict(user_name=user_id))
+            self.hs.get_datastore().get_pushers_by(dict(user_name=self.user_id))
         )
         self.assertEqual(len(pushers), 1)
         last_stream_ordering = pushers[0]["last_stream_ordering"]
@@ -127,7 +173,7 @@ class EmailPusherTests(HomeserverTestCase):
 
         # It hasn't succeeded yet, so the stream ordering shouldn't have moved
         pushers = self.get_success(
-            self.hs.get_datastore().get_pushers_by(dict(user_name=user_id))
+            self.hs.get_datastore().get_pushers_by(dict(user_name=self.user_id))
         )
         self.assertEqual(len(pushers), 1)
         self.assertEqual(last_stream_ordering, pushers[0]["last_stream_ordering"])
@@ -144,7 +190,7 @@ class EmailPusherTests(HomeserverTestCase):
 
         # The stream ordering has increased
         pushers = self.get_success(
-            self.hs.get_datastore().get_pushers_by(dict(user_name=user_id))
+            self.hs.get_datastore().get_pushers_by(dict(user_name=self.user_id))
         )
         self.assertEqual(len(pushers), 1)
         self.assertTrue(pushers[0]["last_stream_ordering"] > last_stream_ordering)
diff --git a/tests/push/test_http.py b/tests/push/test_http.py
index 6dc45e8506..22c3f73ef3 100644
--- a/tests/push/test_http.py
+++ b/tests/push/test_http.py
@@ -17,22 +17,17 @@ from mock import Mock
 
 from twisted.internet.defer import Deferred
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.util.logcontext import make_deferred_yieldable
 
 from tests.unittest import HomeserverTestCase
 
-try:
-    from synapse.push.mailer import load_jinja2_templates
-except Exception:
-    load_jinja2_templates = None
-
 
 class HTTPPusherTests(HomeserverTestCase):
 
-    skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
@@ -53,7 +48,7 @@ class HTTPPusherTests(HomeserverTestCase):
         m.post_json_get_json = post_json_get_json
 
         config = self.default_config()
-        config.start_pushers = True
+        config["start_pushers"] = True
 
         hs = self.setup_test_homeserver(config=config, simple_http_client=m)
 
diff --git a/tests/replication/slave/storage/_base.py b/tests/replication/slave/storage/_base.py
index 1f72a2a04f..104349cdbd 100644
--- a/tests/replication/slave/storage/_base.py
+++ b/tests/replication/slave/storage/_base.py
@@ -74,21 +74,18 @@ class BaseSlavedStoreTestCase(unittest.HomeserverTestCase):
             self.assertEqual(
                 master_result,
                 expected_result,
-                "Expected master result to be %r but was %r" % (
-                    expected_result, master_result
-                ),
+                "Expected master result to be %r but was %r"
+                % (expected_result, master_result),
             )
             self.assertEqual(
                 slaved_result,
                 expected_result,
-                "Expected slave result to be %r but was %r" % (
-                    expected_result, slaved_result
-                ),
+                "Expected slave result to be %r but was %r"
+                % (expected_result, slaved_result),
             )
         self.assertEqual(
             master_result,
             slaved_result,
-            "Slave result %r does not match master result %r" % (
-                slaved_result, master_result
-            ),
+            "Slave result %r does not match master result %r"
+            % (slaved_result, master_result),
         )
diff --git a/tests/replication/slave/storage/test_events.py b/tests/replication/slave/storage/test_events.py
index 65ecff3bd6..a368117b43 100644
--- a/tests/replication/slave/storage/test_events.py
+++ b/tests/replication/slave/storage/test_events.py
@@ -234,10 +234,7 @@ class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
             type="m.room.member", sender=USER_ID_2, key=USER_ID_2, membership="join"
         )
         msg, msgctx = self.build_event()
-        self.get_success(self.master_store.persist_events([
-            (j2, j2ctx),
-            (msg, msgctx),
-        ]))
+        self.get_success(self.master_store.persist_events([(j2, j2ctx), (msg, msgctx)]))
         self.replicate()
 
         event_source = RoomEventSource(self.hs)
@@ -257,15 +254,13 @@ class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
             #
             # First, we get a list of the rooms we are joined to
             joined_rooms = self.get_success(
-                self.slaved_store.get_rooms_for_user_with_stream_ordering(
-                    USER_ID_2,
-                ),
+                self.slaved_store.get_rooms_for_user_with_stream_ordering(USER_ID_2)
             )
 
             # Then, we get a list of the events since the last sync
             membership_changes = self.get_success(
                 self.slaved_store.get_membership_changes_for_user(
-                    USER_ID_2, prev_token, current_token,
+                    USER_ID_2, prev_token, current_token
                 )
             )
 
@@ -298,9 +293,7 @@ class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
                 self.master_store.persist_events([(event, context)], backfilled=True)
             )
         else:
-            self.get_success(
-                self.master_store.persist_event(event, context)
-            )
+            self.get_success(self.master_store.persist_event(event, context))
 
         return event
 
@@ -359,9 +352,7 @@ class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
             )
         else:
             state_handler = self.hs.get_state_handler()
-            context = self.get_success(state_handler.compute_event_context(
-                event
-            ))
+            context = self.get_success(state_handler.compute_event_context(event))
 
         self.master_store.add_push_actions_to_staging(
             event.event_id, {user_id: actions for user_id, actions in push_actions}
diff --git a/tests/replication/tcp/streams/_base.py b/tests/replication/tcp/streams/_base.py
index 38b368a972..ce3835ae6a 100644
--- a/tests/replication/tcp/streams/_base.py
+++ b/tests/replication/tcp/streams/_base.py
@@ -22,6 +22,7 @@ from tests.server import FakeTransport
 
 class BaseStreamTestCase(unittest.HomeserverTestCase):
     """Base class for tests of the replication streams"""
+
     def prepare(self, reactor, clock, hs):
         # build a replication server
         server_factory = ReplicationStreamProtocolFactory(self.hs)
@@ -52,6 +53,7 @@ class BaseStreamTestCase(unittest.HomeserverTestCase):
 
 class TestReplicationClientHandler(object):
     """Drop-in for ReplicationClientHandler which just collects RDATA rows"""
+
     def __init__(self):
         self.received_rdata_rows = []
 
@@ -69,6 +71,4 @@ class TestReplicationClientHandler(object):
 
     def on_rdata(self, stream_name, token, rows):
         for r in rows:
-            self.received_rdata_rows.append(
-                (stream_name, token, r)
-            )
+            self.received_rdata_rows.append((stream_name, token, r))
diff --git a/tests/rest/admin/__init__.py b/tests/rest/admin/__init__.py
new file mode 100644
index 0000000000..1453d04571
--- /dev/null
+++ b/tests/rest/admin/__init__.py
@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/tests/rest/client/v1/test_admin.py b/tests/rest/admin/test_admin.py
similarity index 84%
rename from tests/rest/client/v1/test_admin.py
rename to tests/rest/admin/test_admin.py
index c00ef21d75..e5fc2fcd15 100644
--- a/tests/rest/client/v1/test_admin.py
+++ b/tests/rest/admin/test_admin.py
@@ -19,50 +19,37 @@ import json
 
 from mock import Mock
 
+import synapse.rest.admin
 from synapse.api.constants import UserTypes
-from synapse.rest.client.v1 import admin, events, login, room
+from synapse.http.server import JsonResource
+from synapse.rest.admin import VersionServlet
+from synapse.rest.client.v1 import events, login, room
 from synapse.rest.client.v2_alpha import groups
 
 from tests import unittest
 
 
 class VersionTestCase(unittest.HomeserverTestCase):
+    url = '/_synapse/admin/v1/server_version'
 
-    servlets = [
-        admin.register_servlets,
-        login.register_servlets,
-    ]
-
-    url = '/_matrix/client/r0/admin/server_version'
+    def create_test_json_resource(self):
+        resource = JsonResource(self.hs)
+        VersionServlet(self.hs).register(resource)
+        return resource
 
     def test_version_string(self):
-        self.register_user("admin", "pass", admin=True)
-        self.admin_token = self.login("admin", "pass")
-
-        request, channel = self.make_request("GET", self.url,
-                                             access_token=self.admin_token)
+        request, channel = self.make_request("GET", self.url, shorthand=False)
         self.render(request)
 
-        self.assertEqual(200, int(channel.result["code"]),
-                         msg=channel.result["body"])
-        self.assertEqual({'server_version', 'python_version'},
-                         set(channel.json_body.keys()))
-
-    def test_inaccessible_to_non_admins(self):
-        self.register_user("unprivileged-user", "pass", admin=False)
-        user_token = self.login("unprivileged-user", "pass")
-
-        request, channel = self.make_request("GET", self.url,
-                                             access_token=user_token)
-        self.render(request)
-
-        self.assertEqual(403, int(channel.result['code']),
-                         msg=channel.result['body'])
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual(
+            {'server_version', 'python_version'}, set(channel.json_body.keys())
+        )
 
 
 class UserRegisterTestCase(unittest.HomeserverTestCase):
 
-    servlets = [admin.register_servlets]
+    servlets = [synapse.rest.admin.register_servlets_for_client_rest_resource]
 
     def make_homeserver(self, reactor, clock):
 
@@ -213,9 +200,7 @@ class UserRegisterTestCase(unittest.HomeserverTestCase):
         nonce = channel.json_body["nonce"]
 
         want_mac = hmac.new(key=b"shared", digestmod=hashlib.sha1)
-        want_mac.update(
-            nonce.encode('ascii') + b"\x00bob\x00abc123\x00admin"
-        )
+        want_mac.update(nonce.encode('ascii') + b"\x00bob\x00abc123\x00admin")
         want_mac = want_mac.hexdigest()
 
         body = json.dumps(
@@ -343,11 +328,13 @@ class UserRegisterTestCase(unittest.HomeserverTestCase):
         #
 
         # Invalid user_type
-        body = json.dumps({
-            "nonce": nonce(),
-            "username": "a",
-            "password": "1234",
-            "user_type": "invalid"}
+        body = json.dumps(
+            {
+                "nonce": nonce(),
+                "username": "a",
+                "password": "1234",
+                "user_type": "invalid",
+            }
         )
         request, channel = self.make_request("POST", self.url, body.encode('utf8'))
         self.render(request)
@@ -358,7 +345,7 @@ class UserRegisterTestCase(unittest.HomeserverTestCase):
 
 class ShutdownRoomTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         events.register_servlets,
         room.register_servlets,
@@ -370,9 +357,7 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
         hs.config.user_consent_version = "1"
 
         consent_uri_builder = Mock()
-        consent_uri_builder.build_user_consent_uri.return_value = (
-            "http://example.com"
-        )
+        consent_uri_builder.build_user_consent_uri.return_value = "http://example.com"
         self.event_creation_handler._consent_uri_builder = consent_uri_builder
 
         self.store = hs.get_datastore()
@@ -384,9 +369,7 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
         self.other_user_token = self.login("user", "pass")
 
         # Mark the admin user as having consented
-        self.get_success(
-            self.store.user_set_consent_version(self.admin_user, "1"),
-        )
+        self.get_success(self.store.user_set_consent_version(self.admin_user, "1"))
 
     def test_shutdown_room_consent(self):
         """Test that we can shutdown rooms with local users who have not
@@ -398,9 +381,7 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
         room_id = self.helper.create_room_as(self.other_user, tok=self.other_user_token)
 
         # Assert one user in room
-        users_in_room = self.get_success(
-            self.store.get_users_in_room(room_id),
-        )
+        users_in_room = self.get_success(self.store.get_users_in_room(room_id))
         self.assertEqual([self.other_user], users_in_room)
 
         # Enable require consent to send events
@@ -408,8 +389,7 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
 
         # Assert that the user is getting consent error
         self.helper.send(
-            room_id,
-            body="foo", tok=self.other_user_token, expect_code=403,
+            room_id, body="foo", tok=self.other_user_token, expect_code=403
         )
 
         # Test that the admin can still send shutdown
@@ -425,12 +405,9 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
         self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         # Assert there is now no longer anyone in the room
-        users_in_room = self.get_success(
-            self.store.get_users_in_room(room_id),
-        )
+        users_in_room = self.get_success(self.store.get_users_in_room(room_id))
         self.assertEqual([], users_in_room)
 
-    @unittest.DEBUG
     def test_shutdown_room_block_peek(self):
         """Test that a world_readable room can no longer be peeked into after
         it has been shut down.
@@ -472,30 +449,26 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
 
         url = "rooms/%s/initialSync" % (room_id,)
         request, channel = self.make_request(
-            "GET",
-            url.encode('ascii'),
-            access_token=self.admin_user_tok,
+            "GET", url.encode('ascii'), access_token=self.admin_user_tok
         )
         self.render(request)
         self.assertEqual(
-            expect_code, int(channel.result["code"]), msg=channel.result["body"],
+            expect_code, int(channel.result["code"]), msg=channel.result["body"]
         )
 
         url = "events?timeout=0&room_id=" + room_id
         request, channel = self.make_request(
-            "GET",
-            url.encode('ascii'),
-            access_token=self.admin_user_tok,
+            "GET", url.encode('ascii'), access_token=self.admin_user_tok
         )
         self.render(request)
         self.assertEqual(
-            expect_code, int(channel.result["code"]), msg=channel.result["body"],
+            expect_code, int(channel.result["code"]), msg=channel.result["body"]
         )
 
 
 class DeleteGroupTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         groups.register_servlets,
     ]
@@ -515,15 +488,11 @@ class DeleteGroupTestCase(unittest.HomeserverTestCase):
             "POST",
             "/create_group".encode('ascii'),
             access_token=self.admin_user_tok,
-            content={
-                "localpart": "test",
-            }
+            content={"localpart": "test"},
         )
 
         self.render(request)
-        self.assertEqual(
-            200, int(channel.result["code"]), msg=channel.result["body"],
-        )
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         group_id = channel.json_body["group_id"]
 
@@ -533,27 +502,17 @@ class DeleteGroupTestCase(unittest.HomeserverTestCase):
 
         url = "/groups/%s/admin/users/invite/%s" % (group_id, self.other_user)
         request, channel = self.make_request(
-            "PUT",
-            url.encode('ascii'),
-            access_token=self.admin_user_tok,
-            content={}
+            "PUT", url.encode('ascii'), access_token=self.admin_user_tok, content={}
         )
         self.render(request)
-        self.assertEqual(
-            200, int(channel.result["code"]), msg=channel.result["body"],
-        )
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         url = "/groups/%s/self/accept_invite" % (group_id,)
         request, channel = self.make_request(
-            "PUT",
-            url.encode('ascii'),
-            access_token=self.other_user_token,
-            content={}
+            "PUT", url.encode('ascii'), access_token=self.other_user_token, content={}
         )
         self.render(request)
-        self.assertEqual(
-            200, int(channel.result["code"]), msg=channel.result["body"],
-        )
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         # Check other user knows they're in the group
         self.assertIn(group_id, self._get_groups_user_is_in(self.admin_user_tok))
@@ -565,15 +524,11 @@ class DeleteGroupTestCase(unittest.HomeserverTestCase):
             "POST",
             url.encode('ascii'),
             access_token=self.admin_user_tok,
-            content={
-                "localpart": "test",
-            }
+            content={"localpart": "test"},
         )
 
         self.render(request)
-        self.assertEqual(
-            200, int(channel.result["code"]), msg=channel.result["body"],
-        )
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         # Check group returns 404
         self._check_group(group_id, expect_code=404)
@@ -589,28 +544,22 @@ class DeleteGroupTestCase(unittest.HomeserverTestCase):
 
         url = "/groups/%s/profile" % (group_id,)
         request, channel = self.make_request(
-            "GET",
-            url.encode('ascii'),
-            access_token=self.admin_user_tok,
+            "GET", url.encode('ascii'), access_token=self.admin_user_tok
         )
 
         self.render(request)
         self.assertEqual(
-            expect_code, int(channel.result["code"]), msg=channel.result["body"],
+            expect_code, int(channel.result["code"]), msg=channel.result["body"]
         )
 
     def _get_groups_user_is_in(self, access_token):
         """Returns the list of groups the user is in (given their access token)
         """
         request, channel = self.make_request(
-            "GET",
-            "/joined_groups".encode('ascii'),
-            access_token=access_token,
+            "GET", "/joined_groups".encode('ascii'), access_token=access_token
         )
 
         self.render(request)
-        self.assertEqual(
-            200, int(channel.result["code"]), msg=channel.result["body"],
-        )
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
 
         return channel.json_body["groups"]
diff --git a/tests/rest/client/test_consent.py b/tests/rest/client/test_consent.py
index 4294bbec2a..efc5a99db3 100644
--- a/tests/rest/client/test_consent.py
+++ b/tests/rest/client/test_consent.py
@@ -15,23 +15,18 @@
 
 import os
 
+import synapse.rest.admin
 from synapse.api.urls import ConsentURIBuilder
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, room
 from synapse.rest.consent import consent_resource
 
 from tests import unittest
 from tests.server import render
 
-try:
-    from synapse.push.mailer import load_jinja2_templates
-except Exception:
-    load_jinja2_templates = None
-
 
 class ConsentResourceTestCase(unittest.HomeserverTestCase):
-    skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
@@ -41,15 +36,18 @@ class ConsentResourceTestCase(unittest.HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
 
         config = self.default_config()
-        config.user_consent_version = "1"
-        config.public_baseurl = ""
-        config.form_secret = "123abc"
+        config["public_baseurl"] = "aaaa"
+        config["form_secret"] = "123abc"
 
         # Make some temporary templates...
         temp_consent_path = self.mktemp()
         os.mkdir(temp_consent_path)
         os.mkdir(os.path.join(temp_consent_path, 'en'))
-        config.user_consent_template_dir = os.path.abspath(temp_consent_path)
+
+        config["user_consent"] = {
+            "version": "1",
+            "template_dir": os.path.abspath(temp_consent_path),
+        }
 
         with open(os.path.join(temp_consent_path, "en/1.html"), 'w') as f:
             f.write("{{version}},{{has_consented}}")
diff --git a/tests/rest/client/test_identity.py b/tests/rest/client/test_identity.py
index ca63b2e6ed..68949307d9 100644
--- a/tests/rest/client/test_identity.py
+++ b/tests/rest/client/test_identity.py
@@ -15,7 +15,8 @@
 
 import json
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 
 from tests import unittest
 
@@ -23,7 +24,7 @@ from tests import unittest
 class IdentityTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
@@ -31,7 +32,7 @@ class IdentityTestCase(unittest.HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
 
         config = self.default_config()
-        config.enable_3pid_lookup = False
+        config["enable_3pid_lookup"] = False
         self.hs = self.setup_test_homeserver(config=config)
 
         return self.hs
@@ -43,7 +44,7 @@ class IdentityTestCase(unittest.HomeserverTestCase):
         tok = self.login("kermit", "monkey")
 
         request, channel = self.make_request(
-            b"POST", "/createRoom", b"{}", access_token=tok,
+            b"POST", "/createRoom", b"{}", access_token=tok
         )
         self.render(request)
         self.assertEquals(channel.result["code"], b"200", channel.result)
@@ -55,11 +56,9 @@ class IdentityTestCase(unittest.HomeserverTestCase):
             "address": "test@example.com",
         }
         request_data = json.dumps(params)
-        request_url = (
-            "/rooms/%s/invite" % (room_id)
-        ).encode('ascii')
+        request_url = ("/rooms/%s/invite" % (room_id)).encode('ascii')
         request, channel = self.make_request(
-            b"POST", request_url, request_data, access_token=tok,
+            b"POST", request_url, request_data, access_token=tok
         )
         self.render(request)
         self.assertEquals(channel.result["code"], b"403", channel.result)
diff --git a/tests/rest/client/third_party_rules.py b/tests/rest/client/third_party_rules.py
new file mode 100644
index 0000000000..7167fc56b6
--- /dev/null
+++ b/tests/rest/client/third_party_rules.py
@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the 'License');
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an 'AS IS' BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+
+from tests import unittest
+
+
+class ThirdPartyRulesTestModule(object):
+    def __init__(self, config):
+        pass
+
+    def check_event_allowed(self, event, context):
+        if event.type == "foo.bar.forbidden":
+            return False
+        else:
+            return True
+
+    @staticmethod
+    def parse_config(config):
+        return config
+
+
+class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
+    servlets = [
+        admin.register_servlets,
+        login.register_servlets,
+        room.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        config["third_party_event_rules"] = {
+            "module": "tests.rest.client.third_party_rules.ThirdPartyRulesTestModule",
+            "config": {},
+        }
+
+        self.hs = self.setup_test_homeserver(config=config)
+        return self.hs
+
+    def test_third_party_rules(self):
+        """Tests that a forbidden event is forbidden from being sent, but an allowed one
+        can be sent.
+        """
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        room_id = self.helper.create_room_as(user_id, tok=tok)
+
+        request, channel = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/rooms/%s/send/foo.bar.allowed/1" % room_id,
+            {},
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        request, channel = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/rooms/%s/send/foo.bar.forbidden/1" % room_id,
+            {},
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"403", channel.result)
diff --git a/tests/rest/client/v1/test_directory.py b/tests/rest/client/v1/test_directory.py
new file mode 100644
index 0000000000..633b7dbda0
--- /dev/null
+++ b/tests/rest/client/v1/test_directory.py
@@ -0,0 +1,150 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+
+from synapse.rest import admin
+from synapse.rest.client.v1 import directory, login, room
+from synapse.types import RoomAlias
+from synapse.util.stringutils import random_string
+
+from tests import unittest
+
+
+class DirectoryTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        admin.register_servlets_for_client_rest_resource,
+        directory.register_servlets,
+        login.register_servlets,
+        room.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        config["require_membership_for_aliases"] = True
+
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def prepare(self, reactor, clock, homeserver):
+        self.room_owner = self.register_user("room_owner", "test")
+        self.room_owner_tok = self.login("room_owner", "test")
+
+        self.room_id = self.helper.create_room_as(
+            self.room_owner, tok=self.room_owner_tok
+        )
+
+        self.user = self.register_user("user", "test")
+        self.user_tok = self.login("user", "test")
+
+    def test_state_event_not_in_room(self):
+        self.ensure_user_left_room()
+        self.set_alias_via_state_event(403)
+
+    def test_directory_endpoint_not_in_room(self):
+        self.ensure_user_left_room()
+        self.set_alias_via_directory(403)
+
+    def test_state_event_in_room_too_long(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_state_event(400, alias_length=256)
+
+    def test_directory_in_room_too_long(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_directory(400, alias_length=256)
+
+    def test_state_event_in_room(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_state_event(200)
+
+    def test_directory_in_room(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_directory(200)
+
+    def test_room_creation_too_long(self):
+        url = "/_matrix/client/r0/createRoom"
+
+        # We use deliberately a localpart under the length threshold so
+        # that we can make sure that the check is done on the whole alias.
+        data = {"room_alias_name": random_string(256 - len(self.hs.hostname))}
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "POST", url, request_data, access_token=self.user_tok
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 400, channel.result)
+
+    def test_room_creation(self):
+        url = "/_matrix/client/r0/createRoom"
+
+        # Check with an alias of allowed length. There should already be
+        # a test that ensures it works in test_register.py, but let's be
+        # as cautious as possible here.
+        data = {"room_alias_name": random_string(5)}
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "POST", url, request_data, access_token=self.user_tok
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+    def set_alias_via_state_event(self, expected_code, alias_length=5):
+        url = "/_matrix/client/r0/rooms/%s/state/m.room.aliases/%s" % (
+            self.room_id,
+            self.hs.hostname,
+        )
+
+        data = {"aliases": [self.random_alias(alias_length)]}
+        request_data = json.dumps(data)
+
+        request, channel = self.make_request(
+            "PUT", url, request_data, access_token=self.user_tok
+        )
+        self.render(request)
+        self.assertEqual(channel.code, expected_code, channel.result)
+
+    def set_alias_via_directory(self, expected_code, alias_length=5):
+        url = "/_matrix/client/r0/directory/room/%s" % self.random_alias(alias_length)
+        data = {"room_id": self.room_id}
+        request_data = json.dumps(data)
+
+        request, channel = self.make_request(
+            "PUT", url, request_data, access_token=self.user_tok
+        )
+        self.render(request)
+        self.assertEqual(channel.code, expected_code, channel.result)
+
+    def random_alias(self, length):
+        return RoomAlias(random_string(length), self.hs.hostname).to_string()
+
+    def ensure_user_left_room(self):
+        self.ensure_membership("leave")
+
+    def ensure_user_joined_room(self):
+        self.ensure_membership("join")
+
+    def ensure_membership(self, membership):
+        try:
+            if membership == "leave":
+                self.helper.leave(room=self.room_id, user=self.user, tok=self.user_tok)
+            if membership == "join":
+                self.helper.join(room=self.room_id, user=self.user, tok=self.user_tok)
+        except AssertionError:
+            # We don't care whether the leave request didn't return a 200 (e.g.
+            # if the user isn't already in the room), because we only want to
+            # make sure the user isn't in the room.
+            pass
diff --git a/tests/rest/client/v1/test_events.py b/tests/rest/client/v1/test_events.py
index 36d8547275..f340b7e851 100644
--- a/tests/rest/client/v1/test_events.py
+++ b/tests/rest/client/v1/test_events.py
@@ -17,7 +17,8 @@
 
 from mock import Mock, NonCallableMock
 
-from synapse.rest.client.v1 import admin, events, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import events, login, room
 
 from tests import unittest
 
@@ -28,16 +29,16 @@ class EventStreamPermissionsTestCase(unittest.HomeserverTestCase):
     servlets = [
         events.register_servlets,
         room.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
     ]
 
     def make_homeserver(self, reactor, clock):
 
         config = self.default_config()
-        config.enable_registration_captcha = False
-        config.enable_registration = True
-        config.auto_join_rooms = []
+        config["enable_registration_captcha"] = False
+        config["enable_registration"] = True
+        config["auto_join_rooms"] = []
 
         hs = self.setup_test_homeserver(
             config=config, ratelimiter=NonCallableMock(spec_set=["can_do_action"])
diff --git a/tests/rest/client/v1/test_login.py b/tests/rest/client/v1/test_login.py
index 86312f1096..0397f91a9e 100644
--- a/tests/rest/client/v1/test_login.py
+++ b/tests/rest/client/v1/test_login.py
@@ -1,6 +1,7 @@
 import json
 
-from synapse.rest.client.v1 import admin, login
+import synapse.rest.admin
+from synapse.rest.client.v1 import login
 
 from tests import unittest
 
@@ -10,7 +11,7 @@ LOGIN_URL = b"/_matrix/client/r0/login"
 class LoginRestServletTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
     ]
 
@@ -36,10 +37,7 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         for i in range(0, 6):
             params = {
                 "type": "m.login.password",
-                "identifier": {
-                    "type": "m.id.user",
-                    "user": "kermit" + str(i),
-                },
+                "identifier": {"type": "m.id.user", "user": "kermit" + str(i)},
                 "password": "monkey",
             }
             request_data = json.dumps(params)
@@ -56,14 +54,11 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         # than 1min.
         self.assertTrue(retry_after_ms < 6000)
 
-        self.reactor.advance(retry_after_ms / 1000.)
+        self.reactor.advance(retry_after_ms / 1000.0)
 
         params = {
             "type": "m.login.password",
-            "identifier": {
-                "type": "m.id.user",
-                "user": "kermit" + str(i),
-            },
+            "identifier": {"type": "m.id.user", "user": "kermit" + str(i)},
             "password": "monkey",
         }
         request_data = json.dumps(params)
@@ -81,10 +76,7 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         for i in range(0, 6):
             params = {
                 "type": "m.login.password",
-                "identifier": {
-                    "type": "m.id.user",
-                    "user": "kermit",
-                },
+                "identifier": {"type": "m.id.user", "user": "kermit"},
                 "password": "monkey",
             }
             request_data = json.dumps(params)
@@ -101,14 +93,11 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         # than 1min.
         self.assertTrue(retry_after_ms < 6000)
 
-        self.reactor.advance(retry_after_ms / 1000.)
+        self.reactor.advance(retry_after_ms / 1000.0)
 
         params = {
             "type": "m.login.password",
-            "identifier": {
-                "type": "m.id.user",
-                "user": "kermit",
-            },
+            "identifier": {"type": "m.id.user", "user": "kermit"},
             "password": "monkey",
         }
         request_data = json.dumps(params)
@@ -126,10 +115,7 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         for i in range(0, 6):
             params = {
                 "type": "m.login.password",
-                "identifier": {
-                    "type": "m.id.user",
-                    "user": "kermit",
-                },
+                "identifier": {"type": "m.id.user", "user": "kermit"},
                 "password": "notamonkey",
             }
             request_data = json.dumps(params)
@@ -146,14 +132,11 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase):
         # than 1min.
         self.assertTrue(retry_after_ms < 6000)
 
-        self.reactor.advance(retry_after_ms / 1000.)
+        self.reactor.advance(retry_after_ms / 1000.0)
 
         params = {
             "type": "m.login.password",
-            "identifier": {
-                "type": "m.id.user",
-                "user": "kermit",
-            },
+            "identifier": {"type": "m.id.user", "user": "kermit"},
             "password": "notamonkey",
         }
         request_data = json.dumps(params)
diff --git a/tests/rest/client/v1/test_profile.py b/tests/rest/client/v1/test_profile.py
index 1eab9c3bdb..72c7ed93cb 100644
--- a/tests/rest/client/v1/test_profile.py
+++ b/tests/rest/client/v1/test_profile.py
@@ -14,24 +14,30 @@
 # limitations under the License.
 
 """Tests REST events for /profile paths."""
+import json
+
 from mock import Mock
 
 from twisted.internet import defer
 
 import synapse.types
 from synapse.api.errors import AuthError, SynapseError
-from synapse.rest.client.v1 import profile
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, profile, room
 
 from tests import unittest
 
 from ....utils import MockHttpResource, setup_test_homeserver
 
 myid = "@1234ABCD:test"
-PATH_PREFIX = "/_matrix/client/api/v1"
+PATH_PREFIX = "/_matrix/client/r0"
 
 
-class ProfileTestCase(unittest.TestCase):
-    """ Tests profile management. """
+class MockHandlerProfileTestCase(unittest.TestCase):
+    """ Tests rest layer of profile management.
+
+    Todo: move these into ProfileTestCase
+    """
 
     @defer.inlineCallbacks
     def setUp(self):
@@ -42,6 +48,7 @@ class ProfileTestCase(unittest.TestCase):
                 "set_displayname",
                 "get_avatar_url",
                 "set_avatar_url",
+                "check_profile_query_allowed",
             ]
         )
 
@@ -155,3 +162,130 @@ class ProfileTestCase(unittest.TestCase):
         self.assertEquals(mocked_set.call_args[0][0].localpart, "1234ABCD")
         self.assertEquals(mocked_set.call_args[0][1].user.localpart, "1234ABCD")
         self.assertEquals(mocked_set.call_args[0][2], "http://my.server/pic.gif")
+
+
+class ProfileTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        profile.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        self.hs = self.setup_test_homeserver()
+        return self.hs
+
+    def prepare(self, reactor, clock, hs):
+        self.owner = self.register_user("owner", "pass")
+        self.owner_tok = self.login("owner", "pass")
+
+    def test_set_displayname(self):
+        request, channel = self.make_request(
+            "PUT",
+            "/profile/%s/displayname" % (self.owner, ),
+            content=json.dumps({"displayname": "test"}),
+            access_token=self.owner_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+        res = self.get_displayname()
+        self.assertEqual(res, "test")
+
+    def test_set_displayname_too_long(self):
+        """Attempts to set a stupid displayname should get a 400"""
+        request, channel = self.make_request(
+            "PUT",
+            "/profile/%s/displayname" % (self.owner, ),
+            content=json.dumps({"displayname": "test" * 100}),
+            access_token=self.owner_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 400, channel.result)
+
+        res = self.get_displayname()
+        self.assertEqual(res, "owner")
+
+    def get_displayname(self):
+        request, channel = self.make_request(
+            "GET",
+            "/profile/%s/displayname" % (self.owner, ),
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+        return channel.json_body["displayname"]
+
+
+class ProfilesRestrictedTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        profile.register_servlets,
+        room.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+
+        config = self.default_config()
+        config["require_auth_for_profile_requests"] = True
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def prepare(self, reactor, clock, hs):
+        # User owning the requested profile.
+        self.owner = self.register_user("owner", "pass")
+        self.owner_tok = self.login("owner", "pass")
+        self.profile_url = "/profile/%s" % (self.owner)
+
+        # User requesting the profile.
+        self.requester = self.register_user("requester", "pass")
+        self.requester_tok = self.login("requester", "pass")
+
+        self.room_id = self.helper.create_room_as(self.owner, tok=self.owner_tok)
+
+    def test_no_auth(self):
+        self.try_fetch_profile(401)
+
+    def test_not_in_shared_room(self):
+        self.ensure_requester_left_room()
+
+        self.try_fetch_profile(403, access_token=self.requester_tok)
+
+    def test_in_shared_room(self):
+        self.ensure_requester_left_room()
+
+        self.helper.join(room=self.room_id, user=self.requester, tok=self.requester_tok)
+
+        self.try_fetch_profile(200, self.requester_tok)
+
+    def try_fetch_profile(self, expected_code, access_token=None):
+        self.request_profile(expected_code, access_token=access_token)
+
+        self.request_profile(
+            expected_code, url_suffix="/displayname", access_token=access_token
+        )
+
+        self.request_profile(
+            expected_code, url_suffix="/avatar_url", access_token=access_token
+        )
+
+    def request_profile(self, expected_code, url_suffix="", access_token=None):
+        request, channel = self.make_request(
+            "GET", self.profile_url + url_suffix, access_token=access_token
+        )
+        self.render(request)
+        self.assertEqual(channel.code, expected_code, channel.result)
+
+    def ensure_requester_left_room(self):
+        try:
+            self.helper.leave(
+                room=self.room_id, user=self.requester, tok=self.requester_tok
+            )
+        except AssertionError:
+            # We don't care whether the leave request didn't return a 200 (e.g.
+            # if the user isn't already in the room), because we only want to
+            # make sure the user isn't in the room.
+            pass
diff --git a/tests/rest/client/v1/test_rooms.py b/tests/rest/client/v1/test_rooms.py
index 015c144248..5f75ad7579 100644
--- a/tests/rest/client/v1/test_rooms.py
+++ b/tests/rest/client/v1/test_rooms.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -22,8 +23,9 @@ from six.moves.urllib import parse as urlparse
 
 from twisted.internet import defer
 
+import synapse.rest.admin
 from synapse.api.constants import Membership
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, profile, room
 
 from tests import unittest
 
@@ -803,7 +805,7 @@ class RoomMessageListTestCase(RoomBase):
 
 class RoomSearchTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
@@ -903,3 +905,102 @@ class RoomSearchTestCase(unittest.HomeserverTestCase):
         self.assertEqual(
             context["profile_info"][self.other_user_id]["displayname"], "otheruser"
         )
+
+
+class PublicRoomsRestrictedTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        room.register_servlets,
+        login.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+
+        self.url = b"/_matrix/client/r0/publicRooms"
+
+        config = self.default_config()
+        config["restrict_public_rooms_to_local_users"] = True
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def test_restricted_no_auth(self):
+        request, channel = self.make_request("GET", self.url)
+        self.render(request)
+        self.assertEqual(channel.code, 401, channel.result)
+
+    def test_restricted_auth(self):
+        self.register_user("user", "pass")
+        tok = self.login("user", "pass")
+
+        request, channel = self.make_request("GET", self.url, access_token=tok)
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+
+class PerRoomProfilesForbiddenTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        room.register_servlets,
+        login.register_servlets,
+        profile.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        config["allow_per_room_profiles"] = False
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def prepare(self, reactor, clock, homeserver):
+        self.user_id = self.register_user("test", "test")
+        self.tok = self.login("test", "test")
+
+        # Set a profile for the test user
+        self.displayname = "test user"
+        data = {
+            "displayname": self.displayname,
+        }
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/profile/%s/displayname" % (self.user_id,),
+            request_data,
+            access_token=self.tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+        self.room_id = self.helper.create_room_as(self.user_id, tok=self.tok)
+
+    def test_per_room_profile_forbidden(self):
+        data = {
+            "membership": "join",
+            "displayname": "other test user"
+        }
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "PUT",
+            "/_matrix/client/r0/rooms/%s/state/m.room.member/%s" % (
+                self.room_id, self.user_id,
+            ),
+            request_data,
+            access_token=self.tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+        event_id = channel.json_body["event_id"]
+
+        request, channel = self.make_request(
+            "GET",
+            "/_matrix/client/r0/rooms/%s/event/%s" % (self.room_id, event_id),
+            access_token=self.tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+        res_displayname = channel.json_body["content"]["displayname"]
+        self.assertEqual(res_displayname, self.displayname, channel.result)
diff --git a/tests/rest/client/v1/utils.py b/tests/rest/client/v1/utils.py
index 05b0143c42..f7133fc12e 100644
--- a/tests/rest/client/v1/utils.py
+++ b/tests/rest/client/v1/utils.py
@@ -127,3 +127,20 @@ class RestHelper(object):
         )
 
         return channel.json_body
+
+    def send_state(self, room_id, event_type, body, tok, expect_code=200):
+        path = "/_matrix/client/r0/rooms/%s/state/%s" % (room_id, event_type)
+        if tok:
+            path = path + "?access_token=%s" % tok
+
+        request, channel = make_request(
+            self.hs.get_reactor(), "PUT", path, json.dumps(body).encode('utf8')
+        )
+        render(request, self.resource, self.hs.get_reactor())
+
+        assert int(channel.result["code"]) == expect_code, (
+            "Expected: %d, got: %d, resp: %r"
+            % (expect_code, int(channel.result["code"]), channel.result["body"])
+        )
+
+        return channel.json_body
diff --git a/tests/rest/client/v2_alpha/test_account.py b/tests/rest/client/v2_alpha/test_account.py
new file mode 100644
index 0000000000..a60a4a3b87
--- /dev/null
+++ b/tests/rest/client/v2_alpha/test_account.py
@@ -0,0 +1,286 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import os
+import re
+from email.parser import Parser
+
+import pkg_resources
+
+import synapse.rest.admin
+from synapse.api.constants import LoginType
+from synapse.rest.client.v1 import login
+from synapse.rest.client.v2_alpha import account, register
+
+from tests import unittest
+
+
+class PasswordResetTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        account.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        register.register_servlets,
+        login.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+
+        # Email config.
+        self.email_attempts = []
+
+        def sendmail(smtphost, from_addr, to_addrs, msg, **kwargs):
+            self.email_attempts.append(msg)
+            return
+
+        config["email"] = {
+            "enable_notifs": False,
+            "template_dir": os.path.abspath(
+                pkg_resources.resource_filename("synapse", "res/templates")
+            ),
+            "smtp_host": "127.0.0.1",
+            "smtp_port": 20,
+            "require_transport_security": False,
+            "smtp_user": None,
+            "smtp_pass": None,
+            "notif_from": "test@example.com",
+        }
+        config["public_baseurl"] = "https://example.com"
+
+        hs = self.setup_test_homeserver(config=config, sendmail=sendmail)
+        return hs
+
+    def prepare(self, reactor, clock, hs):
+        self.store = hs.get_datastore()
+
+    def test_basic_password_reset(self):
+        """Test basic password reset flow
+        """
+        old_password = "monkey"
+        new_password = "kangeroo"
+
+        user_id = self.register_user("kermit", old_password)
+        self.login("kermit", old_password)
+
+        email = "test@example.com"
+
+        # Add a threepid
+        self.get_success(
+            self.store.user_add_threepid(
+                user_id=user_id,
+                medium="email",
+                address=email,
+                validated_at=0,
+                added_at=0,
+            )
+        )
+
+        client_secret = "foobar"
+        session_id = self._request_token(email, client_secret)
+
+        self.assertEquals(len(self.email_attempts), 1)
+        link = self._get_link_from_email()
+
+        self._validate_token(link)
+
+        self._reset_password(new_password, session_id, client_secret)
+
+        # Assert we can log in with the new password
+        self.login("kermit", new_password)
+
+        # Assert we can't log in with the old password
+        self.attempt_wrong_password_login("kermit", old_password)
+
+    def test_cant_reset_password_without_clicking_link(self):
+        """Test that we do actually need to click the link in the email
+        """
+        old_password = "monkey"
+        new_password = "kangeroo"
+
+        user_id = self.register_user("kermit", old_password)
+        self.login("kermit", old_password)
+
+        email = "test@example.com"
+
+        # Add a threepid
+        self.get_success(
+            self.store.user_add_threepid(
+                user_id=user_id,
+                medium="email",
+                address=email,
+                validated_at=0,
+                added_at=0,
+            )
+        )
+
+        client_secret = "foobar"
+        session_id = self._request_token(email, client_secret)
+
+        self.assertEquals(len(self.email_attempts), 1)
+
+        # Attempt to reset password without clicking the link
+        self._reset_password(
+            new_password, session_id, client_secret, expected_code=401,
+        )
+
+        # Assert we can log in with the old password
+        self.login("kermit", old_password)
+
+        # Assert we can't log in with the new password
+        self.attempt_wrong_password_login("kermit", new_password)
+
+    def test_no_valid_token(self):
+        """Test that we do actually need to request a token and can't just
+        make a session up.
+        """
+        old_password = "monkey"
+        new_password = "kangeroo"
+
+        user_id = self.register_user("kermit", old_password)
+        self.login("kermit", old_password)
+
+        email = "test@example.com"
+
+        # Add a threepid
+        self.get_success(
+            self.store.user_add_threepid(
+                user_id=user_id,
+                medium="email",
+                address=email,
+                validated_at=0,
+                added_at=0,
+            )
+        )
+
+        client_secret = "foobar"
+        session_id = "weasle"
+
+        # Attempt to reset password without even requesting an email
+        self._reset_password(
+            new_password, session_id, client_secret, expected_code=401,
+        )
+
+        # Assert we can log in with the old password
+        self.login("kermit", old_password)
+
+        # Assert we can't log in with the new password
+        self.attempt_wrong_password_login("kermit", new_password)
+
+    def _request_token(self, email, client_secret):
+        request, channel = self.make_request(
+            "POST",
+            b"account/password/email/requestToken",
+            {"client_secret": client_secret, "email": email, "send_attempt": 1},
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.result)
+
+        return channel.json_body["sid"]
+
+    def _validate_token(self, link):
+        # Remove the host
+        path = link.replace("https://example.com", "")
+
+        request, channel = self.make_request("GET", path, shorthand=False)
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.result)
+
+    def _get_link_from_email(self):
+        assert self.email_attempts, "No emails have been sent"
+
+        raw_msg = self.email_attempts[-1].decode("UTF-8")
+        mail = Parser().parsestr(raw_msg)
+
+        text = None
+        for part in mail.walk():
+            if part.get_content_type() == "text/plain":
+                text = part.get_payload(decode=True).decode("UTF-8")
+                break
+
+        if not text:
+            self.fail("Could not find text portion of email to parse")
+
+        match = re.search(r"https://example.com\S+", text)
+        assert match, "Could not find link in email"
+
+        return match.group(0)
+
+    def _reset_password(
+        self, new_password, session_id, client_secret, expected_code=200
+    ):
+        request, channel = self.make_request(
+            "POST",
+            b"account/password",
+            {
+                "new_password": new_password,
+                "auth": {
+                    "type": LoginType.EMAIL_IDENTITY,
+                    "threepid_creds": {
+                        "client_secret": client_secret,
+                        "sid": session_id,
+                    },
+                },
+            },
+        )
+        self.render(request)
+        self.assertEquals(expected_code, channel.code, channel.result)
+
+
+class DeactivateTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        account.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        hs = self.setup_test_homeserver()
+        return hs
+
+    def test_deactivate_account(self):
+        user_id = self.register_user("kermit", "test")
+        tok = self.login("kermit", "test")
+
+        request_data = json.dumps({
+            "auth": {
+                "type": "m.login.password",
+                "user": user_id,
+                "password": "test",
+            },
+            "erase": False,
+        })
+        request, channel = self.make_request(
+            "POST",
+            "account/deactivate",
+            request_data,
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEqual(request.code, 200)
+
+        store = self.hs.get_datastore()
+
+        # Check that the user has been marked as deactivated.
+        self.assertTrue(self.get_success(store.get_user_deactivated_status(user_id)))
+
+        # Check that this access token has been invalidated.
+        request, channel = self.make_request("GET", "account/whoami")
+        self.render(request)
+        self.assertEqual(request.code, 401)
diff --git a/tests/rest/client/v2_alpha/test_auth.py b/tests/rest/client/v2_alpha/test_auth.py
index 7fa120a10f..b9ef46e8fb 100644
--- a/tests/rest/client/v2_alpha/test_auth.py
+++ b/tests/rest/client/v2_alpha/test_auth.py
@@ -16,8 +16,8 @@
 
 from twisted.internet.defer import succeed
 
+import synapse.rest.admin
 from synapse.api.constants import LoginType
-from synapse.rest.client.v1 import admin
 from synapse.rest.client.v2_alpha import auth, register
 
 from tests import unittest
@@ -27,7 +27,7 @@ class FallbackAuthTests(unittest.HomeserverTestCase):
 
     servlets = [
         auth.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         register.register_servlets,
     ]
     hijack_auth = False
@@ -36,9 +36,9 @@ class FallbackAuthTests(unittest.HomeserverTestCase):
 
         config = self.default_config()
 
-        config.enable_registration_captcha = True
-        config.recaptcha_public_key = "brokencake"
-        config.registrations_require_3pid = []
+        config["enable_registration_captcha"] = True
+        config["recaptcha_public_key"] = "brokencake"
+        config["registrations_require_3pid"] = []
 
         hs = self.setup_test_homeserver(config=config)
         return hs
@@ -92,7 +92,14 @@ class FallbackAuthTests(unittest.HomeserverTestCase):
         self.assertEqual(len(self.recaptcha_attempts), 1)
         self.assertEqual(self.recaptcha_attempts[0][0]["response"], "a")
 
-        # Now we have fufilled the recaptcha fallback step, we can then send a
+        # also complete the dummy auth
+        request, channel = self.make_request(
+            "POST", "register", {"auth": {"session": session, "type": "m.login.dummy"}}
+        )
+        self.render(request)
+
+        # Now we should have fufilled a complete auth flow, including
+        # the recaptcha fallback step, we can then send a
         # request to the register API with the session in the authdict.
         request, channel = self.make_request(
             "POST", "register", {"auth": {"session": session}}
diff --git a/tests/rest/client/v2_alpha/test_capabilities.py b/tests/rest/client/v2_alpha/test_capabilities.py
index bbfc77e829..bce5b0cf4c 100644
--- a/tests/rest/client/v2_alpha/test_capabilities.py
+++ b/tests/rest/client/v2_alpha/test_capabilities.py
@@ -12,9 +12,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
-from synapse.api.room_versions import DEFAULT_ROOM_VERSION, KNOWN_ROOM_VERSIONS
-from synapse.rest.client.v1 import admin, login
+import synapse.rest.admin
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
+from synapse.rest.client.v1 import login
 from synapse.rest.client.v2_alpha import capabilities
 
 from tests import unittest
@@ -23,7 +23,7 @@ from tests import unittest
 class CapabilitiesTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         capabilities.register_servlets,
         login.register_servlets,
     ]
@@ -32,6 +32,7 @@ class CapabilitiesTestCase(unittest.HomeserverTestCase):
         self.url = b"/_matrix/client/r0/capabilities"
         hs = self.setup_test_homeserver()
         self.store = hs.get_datastore()
+        self.config = hs.config
         return hs
 
     def test_check_auth_required(self):
@@ -51,8 +52,10 @@ class CapabilitiesTestCase(unittest.HomeserverTestCase):
         self.assertEqual(channel.code, 200)
         for room_version in capabilities['m.room_versions']['available'].keys():
             self.assertTrue(room_version in KNOWN_ROOM_VERSIONS, "" + room_version)
+
         self.assertEqual(
-            DEFAULT_ROOM_VERSION.identifier, capabilities['m.room_versions']['default']
+            self.config.default_room_version.identifier,
+            capabilities['m.room_versions']['default'],
         )
 
     def test_get_change_password_capabilities(self):
diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py
index a45e6e5e1f..b35b215446 100644
--- a/tests/rest/client/v2_alpha/test_register.py
+++ b/tests/rest/client/v2_alpha/test_register.py
@@ -1,15 +1,39 @@
-import json
+# -*- coding: utf-8 -*-
+# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2017-2018 New Vector Ltd
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
+import datetime
+import json
+import os
+
+import pkg_resources
+
+import synapse.rest.admin
 from synapse.api.constants import LoginType
+from synapse.api.errors import Codes
 from synapse.appservice import ApplicationService
-from synapse.rest.client.v2_alpha.register import register_servlets
+from synapse.rest.client.v1 import login
+from synapse.rest.client.v2_alpha import account, account_validity, register, sync
 
 from tests import unittest
 
 
 class RegisterRestServletTestCase(unittest.HomeserverTestCase):
 
-    servlets = [register_servlets]
+    servlets = [register.register_servlets]
 
     def make_homeserver(self, reactor, clock):
 
@@ -29,11 +53,10 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
         as_token = "i_am_an_app_service"
 
         appservice = ApplicationService(
-            as_token, self.hs.config.server_name,
+            as_token,
+            self.hs.config.server_name,
             id="1234",
-            namespaces={
-                "users": [{"regex": r"@as_user.*", "exclusive": True}],
-            },
+            namespaces={"users": [{"regex": r"@as_user.*", "exclusive": True}]},
         )
 
         self.hs.get_datastore().services_cache.append(appservice)
@@ -45,10 +68,7 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
         self.render(request)
 
         self.assertEquals(channel.result["code"], b"200", channel.result)
-        det_data = {
-            "user_id": user_id,
-            "home_server": self.hs.hostname,
-        }
+        det_data = {"user_id": user_id, "home_server": self.hs.hostname}
         self.assertDictContainsSubset(det_data, channel.json_body)
 
     def test_POST_appservice_registration_invalid(self):
@@ -116,10 +136,7 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
         request, channel = self.make_request(b"POST", self.url + b"?kind=guest", b"{}")
         self.render(request)
 
-        det_data = {
-            "home_server": self.hs.hostname,
-            "device_id": "guest_device",
-        }
+        det_data = {"home_server": self.hs.hostname, "device_id": "guest_device"}
         self.assertEquals(channel.result["code"], b"200", channel.result)
         self.assertDictContainsSubset(det_data, channel.json_body)
 
@@ -147,7 +164,7 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
             else:
                 self.assertEquals(channel.result["code"], b"200", channel.result)
 
-        self.reactor.advance(retry_after_ms / 1000.)
+        self.reactor.advance(retry_after_ms / 1000.0)
 
         request, channel = self.make_request(b"POST", self.url + b"?kind=guest", b"{}")
         self.render(request)
@@ -175,9 +192,326 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
             else:
                 self.assertEquals(channel.result["code"], b"200", channel.result)
 
-        self.reactor.advance(retry_after_ms / 1000.)
+        self.reactor.advance(retry_after_ms / 1000.0)
 
         request, channel = self.make_request(b"POST", self.url + b"?kind=guest", b"{}")
         self.render(request)
 
         self.assertEquals(channel.result["code"], b"200", channel.result)
+
+
+class AccountValidityTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        register.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        sync.register_servlets,
+        account_validity.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        # Test for account expiring after a week.
+        config["enable_registration"] = True
+        config["account_validity"] = {
+            "enabled": True,
+            "period": 604800000,  # Time in ms for 1 week
+        }
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def test_validity_period(self):
+        self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        # The specific endpoint doesn't matter, all we need is an authenticated
+        # endpoint.
+        request, channel = self.make_request(b"GET", "/sync", access_token=tok)
+        self.render(request)
+
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        self.reactor.advance(datetime.timedelta(weeks=1).total_seconds())
+
+        request, channel = self.make_request(b"GET", "/sync", access_token=tok)
+        self.render(request)
+
+        self.assertEquals(channel.result["code"], b"403", channel.result)
+        self.assertEquals(
+            channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result
+        )
+
+    def test_manual_renewal(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        self.reactor.advance(datetime.timedelta(weeks=1).total_seconds())
+
+        # If we register the admin user at the beginning of the test, it will
+        # expire at the same time as the normal user and the renewal request
+        # will be denied.
+        self.register_user("admin", "adminpassword", admin=True)
+        admin_tok = self.login("admin", "adminpassword")
+
+        url = "/_matrix/client/unstable/admin/account_validity/validity"
+        params = {"user_id": user_id}
+        request_data = json.dumps(params)
+        request, channel = self.make_request(
+            b"POST", url, request_data, access_token=admin_tok
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # The specific endpoint doesn't matter, all we need is an authenticated
+        # endpoint.
+        request, channel = self.make_request(b"GET", "/sync", access_token=tok)
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+    def test_manual_expire(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        self.register_user("admin", "adminpassword", admin=True)
+        admin_tok = self.login("admin", "adminpassword")
+
+        url = "/_matrix/client/unstable/admin/account_validity/validity"
+        params = {
+            "user_id": user_id,
+            "expiration_ts": 0,
+            "enable_renewal_emails": False,
+        }
+        request_data = json.dumps(params)
+        request, channel = self.make_request(
+            b"POST", url, request_data, access_token=admin_tok
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # The specific endpoint doesn't matter, all we need is an authenticated
+        # endpoint.
+        request, channel = self.make_request(b"GET", "/sync", access_token=tok)
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"403", channel.result)
+        self.assertEquals(
+            channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result
+        )
+
+
+class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        register.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        sync.register_servlets,
+        account_validity.register_servlets,
+        account.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+
+        # Test for account expiring after a week and renewal emails being sent 2
+        # days before expiry.
+        config["enable_registration"] = True
+        config["account_validity"] = {
+            "enabled": True,
+            "period": 604800000,  # Time in ms for 1 week
+            "renew_at": 172800000,  # Time in ms for 2 days
+            "renew_by_email_enabled": True,
+            "renew_email_subject": "Renew your account",
+        }
+
+        # Email config.
+        self.email_attempts = []
+
+        def sendmail(*args, **kwargs):
+            self.email_attempts.append((args, kwargs))
+            return
+
+        config["email"] = {
+            "enable_notifs": True,
+            "template_dir": os.path.abspath(
+                pkg_resources.resource_filename('synapse', 'res/templates')
+            ),
+            "expiry_template_html": "notice_expiry.html",
+            "expiry_template_text": "notice_expiry.txt",
+            "notif_template_html": "notif_mail.html",
+            "notif_template_text": "notif_mail.txt",
+            "smtp_host": "127.0.0.1",
+            "smtp_port": 20,
+            "require_transport_security": False,
+            "smtp_user": None,
+            "smtp_pass": None,
+            "notif_from": "test@example.com",
+        }
+        config["public_baseurl"] = "aaa"
+
+        self.hs = self.setup_test_homeserver(config=config, sendmail=sendmail)
+
+        self.store = self.hs.get_datastore()
+
+        return self.hs
+
+    def test_renewal_email(self):
+        self.email_attempts = []
+
+        (user_id, tok) = self.create_user()
+
+        # Move 6 days forward. This should trigger a renewal email to be sent.
+        self.reactor.advance(datetime.timedelta(days=6).total_seconds())
+        self.assertEqual(len(self.email_attempts), 1)
+
+        # Retrieving the URL from the email is too much pain for now, so we
+        # retrieve the token from the DB.
+        renewal_token = self.get_success(self.store.get_renewal_token_for_user(user_id))
+        url = "/_matrix/client/unstable/account_validity/renew?token=%s" % renewal_token
+        request, channel = self.make_request(b"GET", url)
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # Move 3 days forward. If the renewal failed, every authed request with
+        # our access token should be denied from now, otherwise they should
+        # succeed.
+        self.reactor.advance(datetime.timedelta(days=3).total_seconds())
+        request, channel = self.make_request(b"GET", "/sync", access_token=tok)
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+    def test_manual_email_send(self):
+        self.email_attempts = []
+
+        (user_id, tok) = self.create_user()
+        request, channel = self.make_request(
+            b"POST",
+            "/_matrix/client/unstable/account_validity/send_mail",
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        self.assertEqual(len(self.email_attempts), 1)
+
+    def test_deactivated_user(self):
+        self.email_attempts = []
+
+        (user_id, tok) = self.create_user()
+
+        request_data = json.dumps({
+            "auth": {
+                "type": "m.login.password",
+                "user": user_id,
+                "password": "monkey",
+            },
+            "erase": False,
+        })
+        request, channel = self.make_request(
+            "POST",
+            "account/deactivate",
+            request_data,
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEqual(request.code, 200)
+
+        self.reactor.advance(datetime.timedelta(days=8).total_seconds())
+
+        self.assertEqual(len(self.email_attempts), 0)
+
+    def create_user(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+        # We need to manually add an email address otherwise the handler will do
+        # nothing.
+        now = self.hs.clock.time_msec()
+        self.get_success(
+            self.store.user_add_threepid(
+                user_id=user_id,
+                medium="email",
+                address="kermit@example.com",
+                validated_at=now,
+                added_at=now,
+            )
+        )
+        return (user_id, tok)
+
+    def test_manual_email_send_expired_account(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        # We need to manually add an email address otherwise the handler will do
+        # nothing.
+        now = self.hs.clock.time_msec()
+        self.get_success(
+            self.store.user_add_threepid(
+                user_id=user_id,
+                medium="email",
+                address="kermit@example.com",
+                validated_at=now,
+                added_at=now,
+            )
+        )
+
+        # Make the account expire.
+        self.reactor.advance(datetime.timedelta(days=8).total_seconds())
+
+        # Ignore all emails sent by the automatic background task and only focus on the
+        # ones sent manually.
+        self.email_attempts = []
+
+        # Test that we're still able to manually trigger a mail to be sent.
+        request, channel = self.make_request(
+            b"POST",
+            "/_matrix/client/unstable/account_validity/send_mail",
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        self.assertEqual(len(self.email_attempts), 1)
+
+
+class AccountValidityBackgroundJobTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        self.validity_period = 10
+        self.max_delta = self.validity_period * 10. / 100.
+
+        config = self.default_config()
+
+        config["enable_registration"] = True
+        config["account_validity"] = {
+            "enabled": False,
+        }
+
+        self.hs = self.setup_test_homeserver(config=config)
+        self.hs.config.account_validity.period = self.validity_period
+
+        self.store = self.hs.get_datastore()
+
+        return self.hs
+
+    def test_background_job(self):
+        """
+        Tests the same thing as test_background_job, except that it sets the
+        startup_job_max_delta parameter and checks that the expiration date is within the
+        allowed range.
+        """
+        user_id = self.register_user("kermit_delta", "user")
+
+        self.hs.config.account_validity.startup_job_max_delta = self.max_delta
+
+        now_ms = self.hs.clock.time_msec()
+        self.get_success(self.store._set_expiration_date_when_missing())
+
+        res = self.get_success(self.store.get_expiration_ts_for_user(user_id))
+
+        self.assertGreaterEqual(res, now_ms + self.validity_period - self.max_delta)
+        self.assertLessEqual(res, now_ms + self.validity_period)
diff --git a/tests/rest/client/v2_alpha/test_relations.py b/tests/rest/client/v2_alpha/test_relations.py
new file mode 100644
index 0000000000..43b3049daa
--- /dev/null
+++ b/tests/rest/client/v2_alpha/test_relations.py
@@ -0,0 +1,564 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import itertools
+import json
+
+import six
+
+from synapse.api.constants import EventTypes, RelationTypes
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+from synapse.rest.client.v2_alpha import register, relations
+
+from tests import unittest
+
+
+class RelationsTestCase(unittest.HomeserverTestCase):
+    servlets = [
+        relations.register_servlets,
+        room.register_servlets,
+        login.register_servlets,
+        register.register_servlets,
+        admin.register_servlets_for_client_rest_resource,
+    ]
+    hijack_auth = False
+
+    def make_homeserver(self, reactor, clock):
+        # We need to enable msc1849 support for aggregations
+        config = self.default_config()
+        config["experimental_msc1849_support_enabled"] = True
+        return self.setup_test_homeserver(config=config)
+
+    def prepare(self, reactor, clock, hs):
+        self.user_id, self.user_token = self._create_user("alice")
+        self.user2_id, self.user2_token = self._create_user("bob")
+
+        self.room = self.helper.create_room_as(self.user_id, tok=self.user_token)
+        self.helper.join(self.room, user=self.user2_id, tok=self.user2_token)
+        res = self.helper.send(self.room, body="Hi!", tok=self.user_token)
+        self.parent_id = res["event_id"]
+
+    def test_send_relation(self):
+        """Tests that sending a relation using the new /send_relation works
+        creates the right shape of event.
+        """
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", key=u"👍")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        event_id = channel.json_body["event_id"]
+
+        request, channel = self.make_request(
+            "GET",
+            "/rooms/%s/event/%s" % (self.room, event_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assert_dict(
+            {
+                "type": "m.reaction",
+                "sender": self.user_id,
+                "content": {
+                    "m.relates_to": {
+                        "event_id": self.parent_id,
+                        "key": u"👍",
+                        "rel_type": RelationTypes.ANNOTATION,
+                    }
+                },
+            },
+            channel.json_body,
+        )
+
+    def test_deny_membership(self):
+        """Test that we deny relations on membership events
+        """
+        channel = self._send_relation(RelationTypes.ANNOTATION, EventTypes.Member)
+        self.assertEquals(400, channel.code, channel.json_body)
+
+    def test_deny_double_react(self):
+        """Test that we deny relations on membership events
+        """
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
+        self.assertEquals(400, channel.code, channel.json_body)
+
+    def test_basic_paginate_relations(self):
+        """Tests that calling pagination API corectly the latest relations.
+        """
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
+        self.assertEquals(200, channel.code, channel.json_body)
+        annotation_id = channel.json_body["event_id"]
+
+        request, channel = self.make_request(
+            "GET",
+            "/_matrix/client/unstable/rooms/%s/relations/%s?limit=1"
+            % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        # We expect to get back a single pagination result, which is the full
+        # relation event we sent above.
+        self.assertEquals(len(channel.json_body["chunk"]), 1, channel.json_body)
+        self.assert_dict(
+            {"event_id": annotation_id, "sender": self.user_id, "type": "m.reaction"},
+            channel.json_body["chunk"][0],
+        )
+
+        # Make sure next_batch has something in it that looks like it could be a
+        # valid token.
+        self.assertIsInstance(
+            channel.json_body.get("next_batch"), six.string_types, channel.json_body
+        )
+
+    def test_repeated_paginate_relations(self):
+        """Test that if we paginate using a limit and tokens then we get the
+        expected events.
+        """
+
+        expected_event_ids = []
+        for _ in range(10):
+            channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
+            self.assertEquals(200, channel.code, channel.json_body)
+            expected_event_ids.append(channel.json_body["event_id"])
+
+        prev_token = None
+        found_event_ids = []
+        for _ in range(20):
+            from_token = ""
+            if prev_token:
+                from_token = "&from=" + prev_token
+
+            request, channel = self.make_request(
+                "GET",
+                "/_matrix/client/unstable/rooms/%s/relations/%s?limit=1%s"
+                % (self.room, self.parent_id, from_token),
+                access_token=self.user_token,
+            )
+            self.render(request)
+            self.assertEquals(200, channel.code, channel.json_body)
+
+            found_event_ids.extend(e["event_id"] for e in channel.json_body["chunk"])
+            next_batch = channel.json_body.get("next_batch")
+
+            self.assertNotEquals(prev_token, next_batch)
+            prev_token = next_batch
+
+            if not prev_token:
+                break
+
+        # We paginated backwards, so reverse
+        found_event_ids.reverse()
+        self.assertEquals(found_event_ids, expected_event_ids)
+
+    def test_aggregation_pagination_groups(self):
+        """Test that we can paginate annotation groups correctly.
+        """
+
+        # We need to create ten separate users to send each reaction.
+        access_tokens = [self.user_token, self.user2_token]
+        idx = 0
+        while len(access_tokens) < 10:
+            user_id, token = self._create_user("test" + str(idx))
+            idx += 1
+
+            self.helper.join(self.room, user=user_id, tok=token)
+            access_tokens.append(token)
+
+        idx = 0
+        sent_groups = {u"👍": 10, u"a": 7, u"b": 5, u"c": 3, u"d": 2, u"e": 1}
+        for key in itertools.chain.from_iterable(
+            itertools.repeat(key, num) for key, num in sent_groups.items()
+        ):
+            channel = self._send_relation(
+                RelationTypes.ANNOTATION,
+                "m.reaction",
+                key=key,
+                access_token=access_tokens[idx],
+            )
+            self.assertEquals(200, channel.code, channel.json_body)
+
+            idx += 1
+            idx %= len(access_tokens)
+
+        prev_token = None
+        found_groups = {}
+        for _ in range(20):
+            from_token = ""
+            if prev_token:
+                from_token = "&from=" + prev_token
+
+            request, channel = self.make_request(
+                "GET",
+                "/_matrix/client/unstable/rooms/%s/aggregations/%s?limit=1%s"
+                % (self.room, self.parent_id, from_token),
+                access_token=self.user_token,
+            )
+            self.render(request)
+            self.assertEquals(200, channel.code, channel.json_body)
+
+            self.assertEqual(len(channel.json_body["chunk"]), 1, channel.json_body)
+
+            for groups in channel.json_body["chunk"]:
+                # We only expect reactions
+                self.assertEqual(groups["type"], "m.reaction", channel.json_body)
+
+                # We should only see each key once
+                self.assertNotIn(groups["key"], found_groups, channel.json_body)
+
+                found_groups[groups["key"]] = groups["count"]
+
+            next_batch = channel.json_body.get("next_batch")
+
+            self.assertNotEquals(prev_token, next_batch)
+            prev_token = next_batch
+
+            if not prev_token:
+                break
+
+        self.assertEquals(sent_groups, found_groups)
+
+    def test_aggregation_pagination_within_group(self):
+        """Test that we can paginate within an annotation group.
+        """
+
+        # We need to create ten separate users to send each reaction.
+        access_tokens = [self.user_token, self.user2_token]
+        idx = 0
+        while len(access_tokens) < 10:
+            user_id, token = self._create_user("test" + str(idx))
+            idx += 1
+
+            self.helper.join(self.room, user=user_id, tok=token)
+            access_tokens.append(token)
+
+        idx = 0
+        expected_event_ids = []
+        for _ in range(10):
+            channel = self._send_relation(
+                RelationTypes.ANNOTATION,
+                "m.reaction",
+                key=u"👍",
+                access_token=access_tokens[idx],
+            )
+            self.assertEquals(200, channel.code, channel.json_body)
+            expected_event_ids.append(channel.json_body["event_id"])
+
+            idx += 1
+
+        # Also send a different type of reaction so that we test we don't see it
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", key="a")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        prev_token = None
+        found_event_ids = []
+        encoded_key = six.moves.urllib.parse.quote_plus(u"👍".encode("utf-8"))
+        for _ in range(20):
+            from_token = ""
+            if prev_token:
+                from_token = "&from=" + prev_token
+
+            request, channel = self.make_request(
+                "GET",
+                "/_matrix/client/unstable/rooms/%s"
+                "/aggregations/%s/%s/m.reaction/%s?limit=1%s"
+                % (
+                    self.room,
+                    self.parent_id,
+                    RelationTypes.ANNOTATION,
+                    encoded_key,
+                    from_token,
+                ),
+                access_token=self.user_token,
+            )
+            self.render(request)
+            self.assertEquals(200, channel.code, channel.json_body)
+
+            self.assertEqual(len(channel.json_body["chunk"]), 1, channel.json_body)
+
+            found_event_ids.extend(e["event_id"] for e in channel.json_body["chunk"])
+
+            next_batch = channel.json_body.get("next_batch")
+
+            self.assertNotEquals(prev_token, next_batch)
+            prev_token = next_batch
+
+            if not prev_token:
+                break
+
+        # We paginated backwards, so reverse
+        found_event_ids.reverse()
+        self.assertEquals(found_event_ids, expected_event_ids)
+
+    def test_aggregation(self):
+        """Test that annotations get correctly aggregated.
+        """
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(
+            RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "b")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        request, channel = self.make_request(
+            "GET",
+            "/_matrix/client/unstable/rooms/%s/aggregations/%s"
+            % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assertEquals(
+            channel.json_body,
+            {
+                "chunk": [
+                    {"type": "m.reaction", "key": "a", "count": 2},
+                    {"type": "m.reaction", "key": "b", "count": 1},
+                ]
+            },
+        )
+
+    def test_aggregation_redactions(self):
+        """Test that annotations get correctly aggregated after a redaction.
+        """
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
+        self.assertEquals(200, channel.code, channel.json_body)
+        to_redact_event_id = channel.json_body["event_id"]
+
+        channel = self._send_relation(
+            RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        # Now lets redact one of the 'a' reactions
+        request, channel = self.make_request(
+            "POST",
+            "/_matrix/client/r0/rooms/%s/redact/%s" % (self.room, to_redact_event_id),
+            access_token=self.user_token,
+            content={},
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        request, channel = self.make_request(
+            "GET",
+            "/_matrix/client/unstable/rooms/%s/aggregations/%s"
+            % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assertEquals(
+            channel.json_body,
+            {"chunk": [{"type": "m.reaction", "key": "a", "count": 1}]},
+        )
+
+    def test_aggregation_must_be_annotation(self):
+        """Test that aggregations must be annotations.
+        """
+
+        request, channel = self.make_request(
+            "GET",
+            "/_matrix/client/unstable/rooms/%s/aggregations/%s/%s?limit=1"
+            % (self.room, self.parent_id, RelationTypes.REPLACE),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(400, channel.code, channel.json_body)
+
+    def test_aggregation_get_event(self):
+        """Test that annotations and references get correctly bundled when
+        getting the parent event.
+        """
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(
+            RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "b")
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        channel = self._send_relation(RelationTypes.REFERENCE, "m.room.test")
+        self.assertEquals(200, channel.code, channel.json_body)
+        reply_1 = channel.json_body["event_id"]
+
+        channel = self._send_relation(RelationTypes.REFERENCE, "m.room.test")
+        self.assertEquals(200, channel.code, channel.json_body)
+        reply_2 = channel.json_body["event_id"]
+
+        request, channel = self.make_request(
+            "GET",
+            "/rooms/%s/event/%s" % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assertEquals(
+            channel.json_body["unsigned"].get("m.relations"),
+            {
+                RelationTypes.ANNOTATION: {
+                    "chunk": [
+                        {"type": "m.reaction", "key": "a", "count": 2},
+                        {"type": "m.reaction", "key": "b", "count": 1},
+                    ]
+                },
+                RelationTypes.REFERENCE: {
+                    "chunk": [{"event_id": reply_1}, {"event_id": reply_2}]
+                },
+            },
+        )
+
+    def test_edit(self):
+        """Test that a simple edit works.
+        """
+
+        new_body = {"msgtype": "m.text", "body": "I've been edited!"}
+        channel = self._send_relation(
+            RelationTypes.REPLACE,
+            "m.room.message",
+            content={"msgtype": "m.text", "body": "foo", "m.new_content": new_body},
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        edit_event_id = channel.json_body["event_id"]
+
+        request, channel = self.make_request(
+            "GET",
+            "/rooms/%s/event/%s" % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assertEquals(channel.json_body["content"], new_body)
+
+        self.assertEquals(
+            channel.json_body["unsigned"].get("m.relations"),
+            {RelationTypes.REPLACE: {"event_id": edit_event_id}},
+        )
+
+    def test_multi_edit(self):
+        """Test that multiple edits, including attempts by people who
+        shouldn't be allowed, are correctly handled.
+        """
+
+        channel = self._send_relation(
+            RelationTypes.REPLACE,
+            "m.room.message",
+            content={
+                "msgtype": "m.text",
+                "body": "Wibble",
+                "m.new_content": {"msgtype": "m.text", "body": "First edit"},
+            },
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        new_body = {"msgtype": "m.text", "body": "I've been edited!"}
+        channel = self._send_relation(
+            RelationTypes.REPLACE,
+            "m.room.message",
+            content={"msgtype": "m.text", "body": "foo", "m.new_content": new_body},
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        edit_event_id = channel.json_body["event_id"]
+
+        channel = self._send_relation(
+            RelationTypes.REPLACE,
+            "m.room.message.WRONG_TYPE",
+            content={
+                "msgtype": "m.text",
+                "body": "Wibble",
+                "m.new_content": {"msgtype": "m.text", "body": "Edit, but wrong type"},
+            },
+        )
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        request, channel = self.make_request(
+            "GET",
+            "/rooms/%s/event/%s" % (self.room, self.parent_id),
+            access_token=self.user_token,
+        )
+        self.render(request)
+        self.assertEquals(200, channel.code, channel.json_body)
+
+        self.assertEquals(channel.json_body["content"], new_body)
+
+        self.assertEquals(
+            channel.json_body["unsigned"].get("m.relations"),
+            {RelationTypes.REPLACE: {"event_id": edit_event_id}},
+        )
+
+    def _send_relation(
+        self, relation_type, event_type, key=None, content={}, access_token=None
+    ):
+        """Helper function to send a relation pointing at `self.parent_id`
+
+        Args:
+            relation_type (str): One of `RelationTypes`
+            event_type (str): The type of the event to create
+            key (str|None): The aggregation key used for m.annotation relation
+                type.
+            content(dict|None): The content of the created event.
+            access_token (str|None): The access token used to send the relation,
+                defaults to `self.user_token`
+
+        Returns:
+            FakeChannel
+        """
+        if not access_token:
+            access_token = self.user_token
+
+        query = ""
+        if key:
+            query = "?key=" + six.moves.urllib.parse.quote_plus(key.encode("utf-8"))
+
+        request, channel = self.make_request(
+            "POST",
+            "/_matrix/client/unstable/rooms/%s/send_relation/%s/%s/%s%s"
+            % (self.room, self.parent_id, relation_type, event_type, query),
+            json.dumps(content).encode("utf-8"),
+            access_token=access_token,
+        )
+        self.render(request)
+        return channel
+
+    def _create_user(self, localpart):
+        user_id = self.register_user(localpart, "abc123")
+        access_token = self.login(localpart, "abc123")
+
+        return user_id, access_token
diff --git a/tests/rest/client/v2_alpha/test_sync.py b/tests/rest/client/v2_alpha/test_sync.py
index 99b716f00a..71895094bd 100644
--- a/tests/rest/client/v2_alpha/test_sync.py
+++ b/tests/rest/client/v2_alpha/test_sync.py
@@ -15,7 +15,8 @@
 
 from mock import Mock
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import sync
 
 from tests import unittest
@@ -72,7 +73,7 @@ class FilterTestCase(unittest.HomeserverTestCase):
 class SyncTypingTests(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
         sync.register_servlets,
diff --git a/tests/rest/media/v1/test_base.py b/tests/rest/media/v1/test_base.py
index af8f74eb42..00688a7325 100644
--- a/tests/rest/media/v1/test_base.py
+++ b/tests/rest/media/v1/test_base.py
@@ -26,20 +26,14 @@ class GetFileNameFromHeadersTests(unittest.TestCase):
         b'inline; filename="aze%20rty"': u"aze%20rty",
         b'inline; filename="aze\"rty"': u'aze"rty',
         b'inline; filename="azer;ty"': u"azer;ty",
-
         b"inline; filename*=utf-8''foo%C2%A3bar": u"foo£bar",
     }
 
     def tests(self):
         for hdr, expected in self.TEST_CASES.items():
-            res = get_filename_from_headers(
-                {
-                    b'Content-Disposition': [hdr],
-                },
-            )
+            res = get_filename_from_headers({b'Content-Disposition': [hdr]})
             self.assertEqual(
-                res, expected,
-                "expected output for %s to be %s but was %s" % (
-                    hdr, expected, res,
-                )
+                res,
+                expected,
+                "expected output for %s to be %s but was %s" % (hdr, expected, res),
             )
diff --git a/tests/rest/media/v1/test_media_storage.py b/tests/rest/media/v1/test_media_storage.py
index ad5e9a612f..1069a44145 100644
--- a/tests/rest/media/v1/test_media_storage.py
+++ b/tests/rest/media/v1/test_media_storage.py
@@ -25,13 +25,11 @@ from six.moves.urllib import parse
 from twisted.internet import defer, reactor
 from twisted.internet.defer import Deferred
 
-from synapse.config.repository import MediaStorageProviderConfig
 from synapse.rest.media.v1._base import FileInfo
 from synapse.rest.media.v1.filepath import MediaFilePaths
 from synapse.rest.media.v1.media_storage import MediaStorage
 from synapse.rest.media.v1.storage_provider import FileStorageProviderBackend
 from synapse.util.logcontext import make_deferred_yieldable
-from synapse.util.module_loader import load_module
 
 from tests import unittest
 
@@ -120,12 +118,14 @@ class MediaRepoTests(unittest.HomeserverTestCase):
         client.get_file = get_file
 
         self.storage_path = self.mktemp()
+        self.media_store_path = self.mktemp()
         os.mkdir(self.storage_path)
+        os.mkdir(self.media_store_path)
 
         config = self.default_config()
-        config.media_store_path = self.storage_path
-        config.thumbnail_requirements = {}
-        config.max_image_pixels = 2000000
+        config["media_store_path"] = self.media_store_path
+        config["thumbnail_requirements"] = {}
+        config["max_image_pixels"] = 2000000
 
         provider_config = {
             "module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend",
@@ -134,12 +134,7 @@ class MediaRepoTests(unittest.HomeserverTestCase):
             "store_remote": True,
             "config": {"directory": self.storage_path},
         }
-
-        loaded = list(load_module(provider_config)) + [
-            MediaStorageProviderConfig(False, False, False)
-        ]
-
-        config.media_storage_providers = [loaded]
+        config["media_storage_providers"] = [provider_config]
 
         hs = self.setup_test_homeserver(config=config, http_client=client)
 
diff --git a/tests/rest/media/v1/test_url_preview.py b/tests/rest/media/v1/test_url_preview.py
index 650ce95a6f..1ab0f7293a 100644
--- a/tests/rest/media/v1/test_url_preview.py
+++ b/tests/rest/media/v1/test_url_preview.py
@@ -16,7 +16,6 @@
 import os
 
 import attr
-from netaddr import IPSet
 
 from twisted.internet._resolver import HostResolution
 from twisted.internet.address import IPv4Address, IPv6Address
@@ -25,9 +24,6 @@ from twisted.python.failure import Failure
 from twisted.test.proto_helpers import AccumulatingProtocol
 from twisted.web._newclient import ResponseDone
 
-from synapse.config.repository import MediaStorageProviderConfig
-from synapse.util.module_loader import load_module
-
 from tests import unittest
 from tests.server import FakeTransport
 
@@ -67,23 +63,23 @@ class URLPreviewTests(unittest.HomeserverTestCase):
 
     def make_homeserver(self, reactor, clock):
 
-        self.storage_path = self.mktemp()
-        os.mkdir(self.storage_path)
-
         config = self.default_config()
-        config.url_preview_enabled = True
-        config.max_spider_size = 9999999
-        config.url_preview_ip_range_blacklist = IPSet(
-            (
-                "192.168.1.1",
-                "1.0.0.0/8",
-                "3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
-                "2001:800::/21",
-            )
+        config["url_preview_enabled"] = True
+        config["max_spider_size"] = 9999999
+        config["url_preview_ip_range_blacklist"] = (
+            "192.168.1.1",
+            "1.0.0.0/8",
+            "3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
+            "2001:800::/21",
         )
-        config.url_preview_ip_range_whitelist = IPSet(("1.1.1.1",))
-        config.url_preview_url_blacklist = []
-        config.media_store_path = self.storage_path
+        config["url_preview_ip_range_whitelist"] = ("1.1.1.1",)
+        config["url_preview_url_blacklist"] = []
+
+        self.storage_path = self.mktemp()
+        self.media_store_path = self.mktemp()
+        os.mkdir(self.storage_path)
+        os.mkdir(self.media_store_path)
+        config["media_store_path"] = self.media_store_path
 
         provider_config = {
             "module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend",
@@ -93,11 +89,7 @@ class URLPreviewTests(unittest.HomeserverTestCase):
             "config": {"directory": self.storage_path},
         }
 
-        loaded = list(load_module(provider_config)) + [
-            MediaStorageProviderConfig(False, False, False)
-        ]
-
-        config.media_storage_providers = [loaded]
+        config["media_storage_providers"] = [provider_config]
 
         hs = self.setup_test_homeserver(config=config)
 
@@ -297,12 +289,12 @@ class URLPreviewTests(unittest.HomeserverTestCase):
 
         # No requests made.
         self.assertEqual(len(self.reactor.tcpClients), 0)
-        self.assertEqual(channel.code, 403)
+        self.assertEqual(channel.code, 502)
         self.assertEqual(
             channel.json_body,
             {
                 'errcode': 'M_UNKNOWN',
-                'error': 'IP address blocked by IP blacklist entry',
+                'error': 'DNS resolution failure during URL preview generation',
             },
         )
 
@@ -318,12 +310,12 @@ class URLPreviewTests(unittest.HomeserverTestCase):
         request.render(self.preview_url)
         self.pump()
 
-        self.assertEqual(channel.code, 403)
+        self.assertEqual(channel.code, 502)
         self.assertEqual(
             channel.json_body,
             {
                 'errcode': 'M_UNKNOWN',
-                'error': 'IP address blocked by IP blacklist entry',
+                'error': 'DNS resolution failure during URL preview generation',
             },
         )
 
@@ -339,7 +331,6 @@ class URLPreviewTests(unittest.HomeserverTestCase):
 
         # No requests made.
         self.assertEqual(len(self.reactor.tcpClients), 0)
-        self.assertEqual(channel.code, 403)
         self.assertEqual(
             channel.json_body,
             {
@@ -347,6 +338,7 @@ class URLPreviewTests(unittest.HomeserverTestCase):
                 'error': 'IP address blocked by IP blacklist entry',
             },
         )
+        self.assertEqual(channel.code, 403)
 
     def test_blacklisted_ip_range_direct(self):
         """
@@ -414,12 +406,12 @@ class URLPreviewTests(unittest.HomeserverTestCase):
         )
         request.render(self.preview_url)
         self.pump()
-        self.assertEqual(channel.code, 403)
+        self.assertEqual(channel.code, 502)
         self.assertEqual(
             channel.json_body,
             {
                 'errcode': 'M_UNKNOWN',
-                'error': 'IP address blocked by IP blacklist entry',
+                'error': 'DNS resolution failure during URL preview generation',
             },
         )
 
@@ -439,12 +431,12 @@ class URLPreviewTests(unittest.HomeserverTestCase):
 
         # No requests made.
         self.assertEqual(len(self.reactor.tcpClients), 0)
-        self.assertEqual(channel.code, 403)
+        self.assertEqual(channel.code, 502)
         self.assertEqual(
             channel.json_body,
             {
                 'errcode': 'M_UNKNOWN',
-                'error': 'IP address blocked by IP blacklist entry',
+                'error': 'DNS resolution failure during URL preview generation',
             },
         )
 
@@ -460,11 +452,11 @@ class URLPreviewTests(unittest.HomeserverTestCase):
         request.render(self.preview_url)
         self.pump()
 
-        self.assertEqual(channel.code, 403)
+        self.assertEqual(channel.code, 502)
         self.assertEqual(
             channel.json_body,
             {
                 'errcode': 'M_UNKNOWN',
-                'error': 'IP address blocked by IP blacklist entry',
+                'error': 'DNS resolution failure during URL preview generation',
             },
         )
diff --git a/tests/rest/test_well_known.py b/tests/rest/test_well_known.py
index 8d8f03e005..b090bb974c 100644
--- a/tests/rest/test_well_known.py
+++ b/tests/rest/test_well_known.py
@@ -31,27 +31,24 @@ class WellKnownTests(unittest.HomeserverTestCase):
         self.hs.config.default_identity_server = "https://testis"
 
         request, channel = self.make_request(
-            "GET",
-            "/.well-known/matrix/client",
-            shorthand=False,
+            "GET", "/.well-known/matrix/client", shorthand=False
         )
         self.render(request)
 
         self.assertEqual(request.code, 200)
         self.assertEqual(
-            channel.json_body, {
+            channel.json_body,
+            {
                 "m.homeserver": {"base_url": "https://tesths"},
                 "m.identity_server": {"base_url": "https://testis"},
-            }
+            },
         )
 
     def test_well_known_no_public_baseurl(self):
         self.hs.config.public_baseurl = None
 
         request, channel = self.make_request(
-            "GET",
-            "/.well-known/matrix/client",
-            shorthand=False,
+            "GET", "/.well-known/matrix/client", shorthand=False
         )
         self.render(request)
 
diff --git a/tests/server.py b/tests/server.py
index 8f89f4a83d..c15a47f2a4 100644
--- a/tests/server.py
+++ b/tests/server.py
@@ -182,7 +182,8 @@ def make_request(
 
     if federation_auth_origin is not None:
         req.requestHeaders.addRawHeader(
-            b"Authorization", b"X-Matrix origin=%s,key=,sig=" % (federation_auth_origin,)
+            b"Authorization",
+            b"X-Matrix origin=%s,key=,sig=" % (federation_auth_origin,),
         )
 
     if content:
@@ -226,6 +227,8 @@ class ThreadedMemoryReactorClock(MemoryReactorClock):
     """
 
     def __init__(self):
+        self.threadpool = ThreadPool(self)
+
         self._udp = []
         lookups = self.lookups = {}
 
@@ -233,7 +236,7 @@ class ThreadedMemoryReactorClock(MemoryReactorClock):
         class FakeResolver(object):
             def getHostByName(self, name, timeout=None):
                 if name not in lookups:
-                    return fail(DNSLookupError("OH NO: unknown %s" % (name, )))
+                    return fail(DNSLookupError("OH NO: unknown %s" % (name,)))
                 return succeed(lookups[name])
 
         self.nameResolver = SimpleResolverComplexifier(FakeResolver())
@@ -254,6 +257,37 @@ class ThreadedMemoryReactorClock(MemoryReactorClock):
         self.callLater(0, d.callback, True)
         return d
 
+    def getThreadPool(self):
+        return self.threadpool
+
+
+class ThreadPool:
+    """
+    Threadless thread pool.
+    """
+
+    def __init__(self, reactor):
+        self._reactor = reactor
+
+    def start(self):
+        pass
+
+    def stop(self):
+        pass
+
+    def callInThreadWithCallback(self, onResult, function, *args, **kwargs):
+        def _(res):
+            if isinstance(res, Failure):
+                onResult(False, res)
+            else:
+                onResult(True, res)
+
+        d = Deferred()
+        d.addCallback(lambda x: function(*args, **kwargs))
+        d.addBoth(_)
+        self._reactor.callLater(0, d.callback, True)
+        return d
+
 
 def setup_test_homeserver(cleanup_func, *args, **kwargs):
     """
@@ -289,36 +323,10 @@ def setup_test_homeserver(cleanup_func, *args, **kwargs):
             **kwargs
         )
 
-    class ThreadPool:
-        """
-        Threadless thread pool.
-        """
-
-        def start(self):
-            pass
-
-        def stop(self):
-            pass
-
-        def callInThreadWithCallback(self, onResult, function, *args, **kwargs):
-            def _(res):
-                if isinstance(res, Failure):
-                    onResult(False, res)
-                else:
-                    onResult(True, res)
-
-            d = Deferred()
-            d.addCallback(lambda x: function(*args, **kwargs))
-            d.addBoth(_)
-            clock._reactor.callLater(0, d.callback, True)
-            return d
-
-    clock.threadpool = ThreadPool()
-
     if pool:
         pool.runWithConnection = runWithConnection
         pool.runInteraction = runInteraction
-        pool.threadpool = ThreadPool()
+        pool.threadpool = ThreadPool(clock._reactor)
         pool.running = True
     return d
 
@@ -454,6 +462,6 @@ class FakeTransport(object):
             logger.warning("Exception writing to protocol: %s", e)
             return
 
-        self.buffer = self.buffer[len(to_write):]
+        self.buffer = self.buffer[len(to_write) :]
         if self.buffer and self.autoflush:
             self._reactor.callLater(0.0, self.flush)
diff --git a/tests/server_notices/test_consent.py b/tests/server_notices/test_consent.py
index 95badc985e..872039c8f1 100644
--- a/tests/server_notices/test_consent.py
+++ b/tests/server_notices/test_consent.py
@@ -13,7 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from synapse.rest.client.v1 import admin, login, room
+import os
+
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import sync
 
 from tests import unittest
@@ -23,27 +26,34 @@ class ConsentNoticesTests(unittest.HomeserverTestCase):
 
     servlets = [
         sync.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         room.register_servlets,
     ]
 
     def make_homeserver(self, reactor, clock):
 
+        tmpdir = self.mktemp()
+        os.mkdir(tmpdir)
         self.consent_notice_message = "consent %(consent_uri)s"
         config = self.default_config()
-        config.user_consent_version = "1"
-        config.user_consent_server_notice_content = {
-            "msgtype": "m.text",
-            "body": self.consent_notice_message,
+        config["user_consent"] = {
+            "version": "1",
+            "template_dir": tmpdir,
+            "server_notice_content": {
+                "msgtype": "m.text",
+                "body": self.consent_notice_message,
+            },
         }
-        config.public_baseurl = "https://example.com/"
-        config.form_secret = "123abc"
+        config["public_baseurl"] = "https://example.com/"
+        config["form_secret"] = "123abc"
 
-        config.server_notices_mxid = "@notices:test"
-        config.server_notices_mxid_display_name = "test display name"
-        config.server_notices_mxid_avatar_url = None
-        config.server_notices_room_name = "Server Notices"
+        config["server_notices"] = {
+            "system_mxid_localpart": "notices",
+            "system_mxid_display_name": "test display name",
+            "system_mxid_avatar_url": None,
+            "room_name": "Server Notices",
+        }
 
         hs = self.setup_test_homeserver(config=config)
 
diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py
index be73e718c2..739ee59ce4 100644
--- a/tests/server_notices/test_resource_limits_server_notices.py
+++ b/tests/server_notices/test_resource_limits_server_notices.py
@@ -27,10 +27,14 @@ from tests import unittest
 
 
 class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
-
     def make_homeserver(self, reactor, clock):
         hs_config = self.default_config("test")
-        hs_config.server_notices_mxid = "@server:test"
+        hs_config["server_notices"] = {
+            "system_mxid_localpart": "server",
+            "system_mxid_display_name": "test display name",
+            "system_mxid_avatar_url": None,
+            "room_name": "Server Notices",
+        }
 
         hs = self.setup_test_homeserver(config=hs_config, expire_access_token=True)
         return hs
@@ -80,7 +84,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         self._send_notice.assert_not_called()
         # Test when mau limiting disabled
         self.hs.config.hs_disabled = False
-        self.hs.limit_usage_by_mau = False
+        self.hs.config.limit_usage_by_mau = False
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
 
         self._send_notice.assert_not_called()
diff --git a/tests/state/test_v2.py b/tests/state/test_v2.py
index f448b01326..9c5311d916 100644
--- a/tests/state/test_v2.py
+++ b/tests/state/test_v2.py
@@ -50,6 +50,7 @@ class FakeEvent(object):
     refer to events. The event_id has node_id as localpart and example.com
     as domain.
     """
+
     def __init__(self, id, sender, type, state_key, content):
         self.node_id = id
         self.event_id = EventID(id, "example.com").to_string()
@@ -142,24 +143,14 @@ INITIAL_EVENTS = [
         content=MEMBERSHIP_CONTENT_JOIN,
     ),
     FakeEvent(
-        id="START",
-        sender=ZARA,
-        type=EventTypes.Message,
-        state_key=None,
-        content={},
+        id="START", sender=ZARA, type=EventTypes.Message, state_key=None, content={}
     ),
     FakeEvent(
-        id="END",
-        sender=ZARA,
-        type=EventTypes.Message,
-        state_key=None,
-        content={},
+        id="END", sender=ZARA, type=EventTypes.Message, state_key=None, content={}
     ),
 ]
 
-INITIAL_EDGES = [
-    "START", "IMZ", "IMC", "IMB", "IJR", "IPOWER", "IMA", "CREATE",
-]
+INITIAL_EDGES = ["START", "IMZ", "IMC", "IMB", "IJR", "IPOWER", "IMA", "CREATE"]
 
 
 class StateTestCase(unittest.TestCase):
@@ -170,12 +161,7 @@ class StateTestCase(unittest.TestCase):
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key="",
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    }
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
                 id="MA",
@@ -196,19 +182,11 @@ class StateTestCase(unittest.TestCase):
                 sender=BOB,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
         ]
 
-        edges = [
-            ["END", "MB", "MA", "PA", "START"],
-            ["END", "PB", "PA"],
-        ]
+        edges = [["END", "MB", "MA", "PA", "START"], ["END", "PB", "PA"]]
 
         expected_state_ids = ["PA", "MA", "MB"]
 
@@ -232,10 +210,7 @@ class StateTestCase(unittest.TestCase):
             ),
         ]
 
-        edges = [
-            ["END", "JR", "START"],
-            ["END", "ME", "START"],
-        ]
+        edges = [["END", "JR", "START"], ["END", "ME", "START"]]
 
         expected_state_ids = ["JR"]
 
@@ -248,45 +223,25 @@ class StateTestCase(unittest.TestCase):
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key="",
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    }
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
                 id="PB",
                 sender=BOB,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                        CHARLIE: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50, CHARLIE: 50}},
             ),
             FakeEvent(
                 id="PC",
                 sender=CHARLIE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                        CHARLIE: 0,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50, CHARLIE: 0}},
             ),
         ]
 
-        edges = [
-            ["END", "PC", "PB", "PA", "START"],
-            ["END", "PA"],
-        ]
+        edges = [["END", "PC", "PB", "PA", "START"], ["END", "PA"]]
 
         expected_state_ids = ["PC"]
 
@@ -295,68 +250,38 @@ class StateTestCase(unittest.TestCase):
     def test_topic_basic(self):
         events = [
             FakeEvent(
-                id="T1",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="PA1",
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
-                id="T2",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T2", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="PA2",
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 0,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 0}},
             ),
             FakeEvent(
                 id="PB",
                 sender=BOB,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
-                id="T3",
-                sender=BOB,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T3", sender=BOB, type=EventTypes.Topic, state_key="", content={}
             ),
         ]
 
-        edges = [
-            ["END", "PA2", "T2", "PA1", "T1", "START"],
-            ["END", "T3", "PB", "PA1"],
-        ]
+        edges = [["END", "PA2", "T2", "PA1", "T1", "START"], ["END", "T3", "PB", "PA1"]]
 
         expected_state_ids = ["PA2", "T2"]
 
@@ -365,30 +290,17 @@ class StateTestCase(unittest.TestCase):
     def test_topic_reset(self):
         events = [
             FakeEvent(
-                id="T1",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="PA",
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
-                id="T2",
-                sender=BOB,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T2", sender=BOB, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="MB",
@@ -399,10 +311,7 @@ class StateTestCase(unittest.TestCase):
             ),
         ]
 
-        edges = [
-            ["END", "MB", "T2", "PA", "T1", "START"],
-            ["END", "T1"],
-        ]
+        edges = [["END", "MB", "T2", "PA", "T1", "START"], ["END", "T1"]]
 
         expected_state_ids = ["T1", "MB", "PA"]
 
@@ -411,61 +320,34 @@ class StateTestCase(unittest.TestCase):
     def test_topic(self):
         events = [
             FakeEvent(
-                id="T1",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="PA1",
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
-                id="T2",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T2", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="PA2",
                 sender=ALICE,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 0,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 0}},
             ),
             FakeEvent(
                 id="PB",
                 sender=BOB,
                 type=EventTypes.PowerLevels,
                 state_key='',
-                content={
-                    "users": {
-                        ALICE: 100,
-                        BOB: 50,
-                    },
-                },
+                content={"users": {ALICE: 100, BOB: 50}},
             ),
             FakeEvent(
-                id="T3",
-                sender=BOB,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T3", sender=BOB, type=EventTypes.Topic, state_key="", content={}
             ),
             FakeEvent(
                 id="MZ1",
@@ -475,11 +357,7 @@ class StateTestCase(unittest.TestCase):
                 content={},
             ),
             FakeEvent(
-                id="T4",
-                sender=ALICE,
-                type=EventTypes.Topic,
-                state_key="",
-                content={},
+                id="T4", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
             ),
         ]
 
@@ -587,13 +465,7 @@ class StateTestCase(unittest.TestCase):
 
 class LexicographicalTestCase(unittest.TestCase):
     def test_simple(self):
-        graph = {
-            "l": {"o"},
-            "m": {"n", "o"},
-            "n": {"o"},
-            "o": set(),
-            "p": {"o"},
-        }
+        graph = {"l": {"o"}, "m": {"n", "o"}, "n": {"o"}, "o": set(), "p": {"o"}}
 
         res = list(lexicographical_topological_sort(graph, key=lambda x: x))
 
@@ -680,7 +552,13 @@ class SimpleParamStateTestCase(unittest.TestCase):
 
         self.expected_combined_state = {
             (e.type, e.state_key): e.event_id
-            for e in [create_event, alice_member, join_rules, bob_member, charlie_member]
+            for e in [
+                create_event,
+                alice_member,
+                join_rules,
+                bob_member,
+                charlie_member,
+            ]
         }
 
     def test_event_map_none(self):
@@ -720,11 +598,7 @@ class TestStateResolutionStore(object):
             Deferred[dict[str, FrozenEvent]]: Dict from event_id to event.
         """
 
-        return {
-            eid: self.event_map[eid]
-            for eid in event_ids
-            if eid in self.event_map
-        }
+        return {eid: self.event_map[eid] for eid in event_ids if eid in self.event_map}
 
     def get_auth_chain(self, event_ids):
         """Gets the full auth chain for a set of events (including rejected
diff --git a/tests/storage/test_appservice.py b/tests/storage/test_appservice.py
index 3f0083831b..25a6c89ef5 100644
--- a/tests/storage/test_appservice.py
+++ b/tests/storage/test_appservice.py
@@ -340,7 +340,7 @@ class ApplicationServiceTransactionStoreTestCase(unittest.TestCase):
         other_events = [Mock(event_id="e5"), Mock(event_id="e6")]
 
         # we aren't testing store._base stuff here, so mock this out
-        self.store._get_events = Mock(return_value=events)
+        self.store.get_events_as_list = Mock(return_value=events)
 
         yield self._insert_txn(self.as_list[1]["id"], 9, other_events)
         yield self._insert_txn(service.id, 10, events)
diff --git a/tests/storage/test_background_update.py b/tests/storage/test_background_update.py
index 5568a607c7..fbb9302694 100644
--- a/tests/storage/test_background_update.py
+++ b/tests/storage/test_background_update.py
@@ -9,9 +9,7 @@ from tests.utils import setup_test_homeserver
 class BackgroundUpdateTestCase(unittest.TestCase):
     @defer.inlineCallbacks
     def setUp(self):
-        hs = yield setup_test_homeserver(
-            self.addCleanup
-        )
+        hs = yield setup_test_homeserver(self.addCleanup)
         self.store = hs.get_datastore()
         self.clock = hs.get_clock()
 
diff --git a/tests/storage/test_base.py b/tests/storage/test_base.py
index f18db8c384..c778de1f0c 100644
--- a/tests/storage/test_base.py
+++ b/tests/storage/test_base.py
@@ -56,10 +56,7 @@ class SQLBaseStoreTestCase(unittest.TestCase):
         fake_engine = Mock(wraps=engine)
         fake_engine.can_native_upsert = False
         hs = TestHomeServer(
-            "test",
-            db_pool=self.db_pool,
-            config=config,
-            database_engine=fake_engine,
+            "test", db_pool=self.db_pool, config=config, database_engine=fake_engine
         )
 
         self.datastore = SQLBaseStore(None, hs)
diff --git a/tests/storage/test_cleanup_extrems.py b/tests/storage/test_cleanup_extrems.py
new file mode 100644
index 0000000000..f4c81ef77d
--- /dev/null
+++ b/tests/storage/test_cleanup_extrems.py
@@ -0,0 +1,224 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path
+
+from synapse.storage import prepare_database
+from synapse.types import Requester, UserID
+
+from tests.unittest import HomeserverTestCase
+
+
+class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
+    """
+    Test the background update to clean forward extremities table.
+    """
+
+    def prepare(self, reactor, clock, homeserver):
+        self.store = homeserver.get_datastore()
+        self.room_creator = homeserver.get_room_creation_handler()
+
+        # Create a test user and room
+        self.user = UserID("alice", "test")
+        self.requester = Requester(self.user, None, False, None, None)
+        info = self.get_success(self.room_creator.create_room(self.requester, {}))
+        self.room_id = info["room_id"]
+
+    def run_background_update(self):
+        """Re run the background update to clean up the extremities.
+        """
+        # Make sure we don't clash with in progress updates.
+        self.assertTrue(self.store._all_done, "Background updates are still ongoing")
+
+        schema_path = os.path.join(
+            prepare_database.dir_path,
+            "schema",
+            "delta",
+            "54",
+            "delete_forward_extremities.sql",
+        )
+
+        def run_delta_file(txn):
+            prepare_database.executescript(txn, schema_path)
+
+        self.get_success(
+            self.store.runInteraction("test_delete_forward_extremities", run_delta_file)
+        )
+
+        # Ugh, have to reset this flag
+        self.store._all_done = False
+
+        while not self.get_success(self.store.has_completed_background_updates()):
+            self.get_success(self.store.do_next_background_update(100), by=0.1)
+
+    def test_soft_failed_extremities_handled_correctly(self):
+        """Test that extremities are correctly calculated in the presence of
+        soft failed events.
+
+        Tests a graph like:
+
+            A <- SF1 <- SF2 <- B
+
+        Where SF* are soft failed.
+        """
+
+        # Create the room graph
+        event_id_1 = self.create_and_send_event(self.room_id, self.user)
+        event_id_2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_1]
+        )
+        event_id_3 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_2]
+        )
+        event_id_4 = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_3]
+        )
+
+        # Check the latest events are as expected
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+
+        self.assertEqual(latest_event_ids, [event_id_4])
+
+    def test_basic_cleanup(self):
+        """Test that extremities are correctly calculated in the presence of
+        soft failed events.
+
+        Tests a graph like:
+
+            A <- SF1 <- B
+
+        Where SF* are soft failed, and with extremities of A and B
+        """
+        # Create the room graph
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_b = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf1]
+        )
+
+        # Add the new extremity and check the latest events are as expected
+        self.add_extremity(self.room_id, event_id_a)
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(set(latest_event_ids), set((event_id_a, event_id_b)))
+
+        # Run the background update and check it did the right thing
+        self.run_background_update()
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(latest_event_ids, [event_id_b])
+
+    def test_chain_of_fail_cleanup(self):
+        """Test that extremities are correctly calculated in the presence of
+        soft failed events.
+
+        Tests a graph like:
+
+            A <- SF1 <- SF2 <- B
+
+        Where SF* are soft failed, and with extremities of A and B
+        """
+        # Create the room graph
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_sf2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf1]
+        )
+        event_id_b = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf2]
+        )
+
+        # Add the new extremity and check the latest events are as expected
+        self.add_extremity(self.room_id, event_id_a)
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(set(latest_event_ids), set((event_id_a, event_id_b)))
+
+        # Run the background update and check it did the right thing
+        self.run_background_update()
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(latest_event_ids, [event_id_b])
+
+    def test_forked_graph_cleanup(self):
+        r"""Test that extremities are correctly calculated in the presence of
+        soft failed events.
+
+        Tests a graph like, where time flows down the page:
+
+                A     B
+               / \   /
+              /   \ /
+            SF1   SF2
+             |     |
+            SF3    |
+           /   \   |
+           |    \  |
+           C     SF4
+
+        Where SF* are soft failed, and with them A, B and C marked as
+        extremities. This should resolve to B and C being marked as extremity.
+        """
+
+        # Create the room graph
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_b = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_sf2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a, event_id_b]
+        )
+        event_id_sf3 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf1]
+        )
+        self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf2, event_id_sf3]
+        )  # SF4
+        event_id_c = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf3]
+        )
+
+        # Add the new extremity and check the latest events are as expected
+        self.add_extremity(self.room_id, event_id_a)
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(
+            set(latest_event_ids), set((event_id_a, event_id_b, event_id_c))
+        )
+
+        # Run the background update and check it did the right thing
+        self.run_background_update()
+
+        latest_event_ids = self.get_success(
+            self.store.get_latest_event_ids_in_room(self.room_id)
+        )
+        self.assertEqual(set(latest_event_ids), set([event_id_b, event_id_c]))
diff --git a/tests/storage/test_client_ips.py b/tests/storage/test_client_ips.py
index 858efe4992..b62eae7abc 100644
--- a/tests/storage/test_client_ips.py
+++ b/tests/storage/test_client_ips.py
@@ -18,8 +18,9 @@ from mock import Mock
 
 from twisted.internet import defer
 
+import synapse.rest.admin
 from synapse.http.site import XForwardedForRequest
-from synapse.rest.client.v1 import admin, login
+from synapse.rest.client.v1 import login
 
 from tests import unittest
 
@@ -205,7 +206,10 @@ class ClientIpStoreTestCase(unittest.HomeserverTestCase):
 
 class ClientIpAuthTestCase(unittest.HomeserverTestCase):
 
-    servlets = [admin.register_servlets, login.register_servlets]
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+    ]
 
     def make_homeserver(self, reactor, clock):
         hs = self.setup_test_homeserver()
diff --git a/tests/storage/test_devices.py b/tests/storage/test_devices.py
index aef4dfaf57..6396ccddb5 100644
--- a/tests/storage/test_devices.py
+++ b/tests/storage/test_devices.py
@@ -71,6 +71,75 @@ class DeviceStoreTestCase(tests.unittest.TestCase):
             res["device2"],
         )
 
+    @defer.inlineCallbacks
+    def test_get_devices_by_remote(self):
+        device_ids = ["device_id1", "device_id2"]
+
+        # Add two device updates with a single stream_id
+        yield self.store.add_device_change_to_streams(
+            "user_id", device_ids, ["somehost"],
+        )
+
+        # Get all device updates ever meant for this remote
+        now_stream_id, device_updates = yield self.store.get_devices_by_remote(
+            "somehost", -1, limit=100,
+        )
+
+        # Check original device_ids are contained within these updates
+        self._check_devices_in_updates(device_ids, device_updates)
+
+    @defer.inlineCallbacks
+    def test_get_devices_by_remote_limited(self):
+        # Test breaking the update limit in 1, 101, and 1 device_id segments
+
+        # first add one device
+        device_ids1 = ["device_id0"]
+        yield self.store.add_device_change_to_streams(
+            "user_id", device_ids1, ["someotherhost"],
+        )
+
+        # then add 101
+        device_ids2 = ["device_id" + str(i + 1) for i in range(101)]
+        yield self.store.add_device_change_to_streams(
+            "user_id", device_ids2, ["someotherhost"],
+        )
+
+        # then one more
+        device_ids3 = ["newdevice"]
+        yield self.store.add_device_change_to_streams(
+            "user_id", device_ids3, ["someotherhost"],
+        )
+
+        #
+        # now read them back.
+        #
+
+        # first we should get a single update
+        now_stream_id, device_updates = yield self.store.get_devices_by_remote(
+            "someotherhost", -1, limit=100,
+        )
+        self._check_devices_in_updates(device_ids1, device_updates)
+
+        # Then we should get an empty list back as the 101 devices broke the limit
+        now_stream_id, device_updates = yield self.store.get_devices_by_remote(
+            "someotherhost", now_stream_id, limit=100,
+        )
+        self.assertEqual(len(device_updates), 0)
+
+        # The 101 devices should've been cleared, so we should now just get one device
+        # update
+        now_stream_id, device_updates = yield self.store.get_devices_by_remote(
+            "someotherhost", now_stream_id, limit=100,
+        )
+        self._check_devices_in_updates(device_ids3, device_updates)
+
+    def _check_devices_in_updates(self, expected_device_ids, device_updates):
+        """Check that an specific device ids exist in a list of device update EDUs"""
+        self.assertEqual(len(device_updates), len(expected_device_ids))
+
+        received_device_ids = {update["device_id"] for update in device_updates}
+        self.assertEqual(received_device_ids, set(expected_device_ids))
+
     @defer.inlineCallbacks
     def test_update_device(self):
         yield self.store.store_device("user_id", "device_id", "display_name 1")
diff --git a/tests/storage/test_end_to_end_keys.py b/tests/storage/test_end_to_end_keys.py
index 11fb8c0c19..cd2bcd4ca3 100644
--- a/tests/storage/test_end_to_end_keys.py
+++ b/tests/storage/test_end_to_end_keys.py
@@ -20,7 +20,6 @@ import tests.utils
 
 
 class EndToEndKeyStoreTestCase(tests.unittest.TestCase):
-
     @defer.inlineCallbacks
     def setUp(self):
         hs = yield tests.utils.setup_test_homeserver(self.addCleanup)
diff --git a/tests/storage/test_event_metrics.py b/tests/storage/test_event_metrics.py
new file mode 100644
index 0000000000..19f9ccf5e0
--- /dev/null
+++ b/tests/storage/test_event_metrics.py
@@ -0,0 +1,82 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the 'License');
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an 'AS IS' BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from prometheus_client.exposition import generate_latest
+
+from synapse.metrics import REGISTRY
+from synapse.types import Requester, UserID
+
+from tests.unittest import HomeserverTestCase
+
+
+class ExtremStatisticsTestCase(HomeserverTestCase):
+    def test_exposed_to_prometheus(self):
+        """
+        Forward extremity counts are exposed via Prometheus.
+        """
+        room_creator = self.hs.get_room_creation_handler()
+
+        user = UserID("alice", "test")
+        requester = Requester(user, None, False, None, None)
+
+        # Real events, forward extremities
+        events = [(3, 2), (6, 2), (4, 6)]
+
+        for event_count, extrems in events:
+            info = self.get_success(room_creator.create_room(requester, {}))
+            room_id = info["room_id"]
+
+            last_event = None
+
+            # Make a real event chain
+            for i in range(event_count):
+                ev = self.create_and_send_event(room_id, user, False, last_event)
+                last_event = [ev]
+
+            # Sprinkle in some extremities
+            for i in range(extrems):
+                ev = self.create_and_send_event(room_id, user, False, last_event)
+
+        # Let it run for a while, then pull out the statistics from the
+        # Prometheus client registry
+        self.reactor.advance(60 * 60 * 1000)
+        self.pump(1)
+
+        items = set(
+            filter(
+                lambda x: b"synapse_forward_extremities_" in x,
+                generate_latest(REGISTRY).split(b"\n"),
+            )
+        )
+
+        expected = set([
+            b'synapse_forward_extremities_bucket{le="1.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="2.0"} 2.0',
+            b'synapse_forward_extremities_bucket{le="3.0"} 2.0',
+            b'synapse_forward_extremities_bucket{le="5.0"} 2.0',
+            b'synapse_forward_extremities_bucket{le="7.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="10.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="15.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="20.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="50.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="100.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="200.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="500.0"} 3.0',
+            b'synapse_forward_extremities_bucket{le="+Inf"} 3.0',
+            b'synapse_forward_extremities_count 3.0',
+            b'synapse_forward_extremities_sum 10.0',
+        ])
+
+        self.assertEqual(items, expected)
diff --git a/tests/storage/test_keys.py b/tests/storage/test_keys.py
index 0d2dc9f325..e07ff01201 100644
--- a/tests/storage/test_keys.py
+++ b/tests/storage/test_keys.py
@@ -15,34 +15,109 @@
 
 import signedjson.key
 
-from twisted.internet import defer
+from twisted.internet.defer import Deferred
+
+from synapse.storage.keys import FetchKeyResult
 
 import tests.unittest
-import tests.utils
+
+KEY_1 = signedjson.key.decode_verify_key_base64(
+    "ed25519", "key1", "fP5l4JzpZPq/zdbBg5xx6lQGAAOM9/3w94cqiJ5jPrw"
+)
+KEY_2 = signedjson.key.decode_verify_key_base64(
+    "ed25519", "key2", "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
+)
 
 
-class KeyStoreTestCase(tests.unittest.TestCase):
-
-    @defer.inlineCallbacks
-    def setUp(self):
-        hs = yield tests.utils.setup_test_homeserver(self.addCleanup)
-        self.store = hs.get_datastore()
-
-    @defer.inlineCallbacks
+class KeyStoreTestCase(tests.unittest.HomeserverTestCase):
     def test_get_server_verify_keys(self):
-        key1 = signedjson.key.decode_verify_key_base64(
-            "ed25519", "key1", "fP5l4JzpZPq/zdbBg5xx6lQGAAOM9/3w94cqiJ5jPrw"
-        )
-        key2 = signedjson.key.decode_verify_key_base64(
-            "ed25519", "key2", "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
-        )
-        yield self.store.store_server_verify_key("server1", "from_server", 0, key1)
-        yield self.store.store_server_verify_key("server1", "from_server", 0, key2)
+        store = self.hs.get_datastore()
 
-        res = yield self.store.get_server_verify_keys(
-            "server1", ["ed25519:key1", "ed25519:key2", "ed25519:key3"]
+        key_id_1 = "ed25519:key1"
+        key_id_2 = "ed25519:KEY_ID_2"
+        d = store.store_server_verify_keys(
+            "from_server",
+            10,
+            [
+                ("server1", key_id_1, FetchKeyResult(KEY_1, 100)),
+                ("server1", key_id_2, FetchKeyResult(KEY_2, 200)),
+            ],
         )
+        self.get_success(d)
 
+        d = store.get_server_verify_keys(
+            [("server1", key_id_1), ("server1", key_id_2), ("server1", "ed25519:key3")]
+        )
+        res = self.get_success(d)
+
+        self.assertEqual(len(res.keys()), 3)
+        res1 = res[("server1", key_id_1)]
+        self.assertEqual(res1.verify_key, KEY_1)
+        self.assertEqual(res1.verify_key.version, "key1")
+        self.assertEqual(res1.valid_until_ts, 100)
+
+        res2 = res[("server1", key_id_2)]
+        self.assertEqual(res2.verify_key, KEY_2)
+        # version comes from the ID it was stored with
+        self.assertEqual(res2.verify_key.version, "KEY_ID_2")
+        self.assertEqual(res2.valid_until_ts, 200)
+
+        # non-existent result gives None
+        self.assertIsNone(res[("server1", "ed25519:key3")])
+
+    def test_cache(self):
+        """Check that updates correctly invalidate the cache."""
+
+        store = self.hs.get_datastore()
+
+        key_id_1 = "ed25519:key1"
+        key_id_2 = "ed25519:key2"
+
+        d = store.store_server_verify_keys(
+            "from_server",
+            0,
+            [
+                ("srv1", key_id_1, FetchKeyResult(KEY_1, 100)),
+                ("srv1", key_id_2, FetchKeyResult(KEY_2, 200)),
+            ],
+        )
+        self.get_success(d)
+
+        d = store.get_server_verify_keys([("srv1", key_id_1), ("srv1", key_id_2)])
+        res = self.get_success(d)
         self.assertEqual(len(res.keys()), 2)
-        self.assertEqual(res["ed25519:key1"].version, "key1")
-        self.assertEqual(res["ed25519:key2"].version, "key2")
+
+        res1 = res[("srv1", key_id_1)]
+        self.assertEqual(res1.verify_key, KEY_1)
+        self.assertEqual(res1.valid_until_ts, 100)
+
+        res2 = res[("srv1", key_id_2)]
+        self.assertEqual(res2.verify_key, KEY_2)
+        self.assertEqual(res2.valid_until_ts, 200)
+
+        # we should be able to look up the same thing again without a db hit
+        res = store.get_server_verify_keys([("srv1", key_id_1)])
+        if isinstance(res, Deferred):
+            res = self.successResultOf(res)
+        self.assertEqual(len(res.keys()), 1)
+        self.assertEqual(res[("srv1", key_id_1)].verify_key, KEY_1)
+
+        new_key_2 = signedjson.key.get_verify_key(
+            signedjson.key.generate_signing_key("key2")
+        )
+        d = store.store_server_verify_keys(
+            "from_server", 10, [("srv1", key_id_2, FetchKeyResult(new_key_2, 300))]
+        )
+        self.get_success(d)
+
+        d = store.get_server_verify_keys([("srv1", key_id_1), ("srv1", key_id_2)])
+        res = self.get_success(d)
+        self.assertEqual(len(res.keys()), 2)
+
+        res1 = res[("srv1", key_id_1)]
+        self.assertEqual(res1.verify_key, KEY_1)
+        self.assertEqual(res1.valid_until_ts, 100)
+
+        res2 = res[("srv1", key_id_2)]
+        self.assertEqual(res2.verify_key, new_key_2)
+        self.assertEqual(res2.valid_until_ts, 300)
diff --git a/tests/storage/test_monthly_active_users.py b/tests/storage/test_monthly_active_users.py
index d6569a82bb..f458c03054 100644
--- a/tests/storage/test_monthly_active_users.py
+++ b/tests/storage/test_monthly_active_users.py
@@ -56,8 +56,7 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
         self.store.register(user_id=user1, token="123", password_hash=None)
         self.store.register(user_id=user2, token="456", password_hash=None)
         self.store.register(
-            user_id=user3, token="789",
-            password_hash=None, user_type=UserTypes.SUPPORT
+            user_id=user3, token="789", password_hash=None, user_type=UserTypes.SUPPORT
         )
         self.pump()
 
@@ -173,9 +172,7 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
     def test_populate_monthly_users_should_update(self):
         self.store.upsert_monthly_active_user = Mock()
 
-        self.store.is_trial_user = Mock(
-            return_value=defer.succeed(False)
-        )
+        self.store.is_trial_user = Mock(return_value=defer.succeed(False))
 
         self.store.user_last_seen_monthly_active = Mock(
             return_value=defer.succeed(None)
@@ -187,13 +184,9 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
     def test_populate_monthly_users_should_not_update(self):
         self.store.upsert_monthly_active_user = Mock()
 
-        self.store.is_trial_user = Mock(
-            return_value=defer.succeed(False)
-        )
+        self.store.is_trial_user = Mock(return_value=defer.succeed(False))
         self.store.user_last_seen_monthly_active = Mock(
-            return_value=defer.succeed(
-                self.hs.get_clock().time_msec()
-            )
+            return_value=defer.succeed(self.hs.get_clock().time_msec())
         )
         self.store.populate_monthly_active_users('user_id')
         self.pump()
@@ -243,7 +236,7 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
             user_id=support_user_id,
             token="123",
             password_hash=None,
-            user_type=UserTypes.SUPPORT
+            user_type=UserTypes.SUPPORT,
         )
 
         self.store.upsert_monthly_active_user(support_user_id)
diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py
index 0fc5019e9f..4823d44dec 100644
--- a/tests/storage/test_redaction.py
+++ b/tests/storage/test_redaction.py
@@ -60,7 +60,7 @@ class RedactionTestCase(unittest.TestCase):
                 "state_key": user.to_string(),
                 "room_id": room.to_string(),
                 "content": content,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
@@ -83,7 +83,7 @@ class RedactionTestCase(unittest.TestCase):
                 "state_key": user.to_string(),
                 "room_id": room.to_string(),
                 "content": {"body": body, "msgtype": u"message"},
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
@@ -105,7 +105,7 @@ class RedactionTestCase(unittest.TestCase):
                 "room_id": room.to_string(),
                 "content": {"reason": reason},
                 "redacts": event_id,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
diff --git a/tests/storage/test_registration.py b/tests/storage/test_registration.py
index cb3cc4d2e5..c0e0155bb4 100644
--- a/tests/storage/test_registration.py
+++ b/tests/storage/test_registration.py
@@ -116,7 +116,7 @@ class RegistrationStoreTestCase(unittest.TestCase):
             user_id=SUPPORT_USER,
             token="456",
             password_hash=None,
-            user_type=UserTypes.SUPPORT
+            user_type=UserTypes.SUPPORT,
         )
         res = yield self.store.is_support_user(SUPPORT_USER)
         self.assertTrue(res)
diff --git a/tests/storage/test_roommember.py b/tests/storage/test_roommember.py
index 063387863e..73ed943f5a 100644
--- a/tests/storage/test_roommember.py
+++ b/tests/storage/test_roommember.py
@@ -58,7 +58,7 @@ class RoomMemberStoreTestCase(unittest.TestCase):
                 "state_key": user.to_string(),
                 "room_id": room.to_string(),
                 "content": {"membership": membership},
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
diff --git a/tests/storage/test_state.py b/tests/storage/test_state.py
index 78e260a7fa..b6169436de 100644
--- a/tests/storage/test_state.py
+++ b/tests/storage/test_state.py
@@ -29,7 +29,6 @@ logger = logging.getLogger(__name__)
 
 
 class StateStoreTestCase(tests.unittest.TestCase):
-
     @defer.inlineCallbacks
     def setUp(self):
         hs = yield tests.utils.setup_test_homeserver(self.addCleanup)
@@ -57,7 +56,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
                 "state_key": state_key,
                 "room_id": room.to_string(),
                 "content": content,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
@@ -83,15 +82,14 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.room, self.u_alice, EventTypes.Name, '', {"name": "test room"}
         )
 
-        state_group_map = yield self.store.get_state_groups_ids(self.room, [e2.event_id])
+        state_group_map = yield self.store.get_state_groups_ids(
+            self.room, [e2.event_id]
+        )
         self.assertEqual(len(state_group_map), 1)
         state_map = list(state_group_map.values())[0]
         self.assertDictEqual(
             state_map,
-            {
-                (EventTypes.Create, ''): e1.event_id,
-                (EventTypes.Name, ''): e2.event_id,
-            },
+            {(EventTypes.Create, ''): e1.event_id, (EventTypes.Name, ''): e2.event_id},
         )
 
     @defer.inlineCallbacks
@@ -103,15 +101,11 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.room, self.u_alice, EventTypes.Name, '', {"name": "test room"}
         )
 
-        state_group_map = yield self.store.get_state_groups(
-            self.room, [e2.event_id])
+        state_group_map = yield self.store.get_state_groups(self.room, [e2.event_id])
         self.assertEqual(len(state_group_map), 1)
         state_list = list(state_group_map.values())[0]
 
-        self.assertEqual(
-            {ev.event_id for ev in state_list},
-            {e1.event_id, e2.event_id},
-        )
+        self.assertEqual({ev.event_id for ev in state_list}, {e1.event_id, e2.event_id})
 
     @defer.inlineCallbacks
     def test_get_state_for_event(self):
@@ -147,9 +141,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
         )
 
         # check we get the full state as of the final event
-        state = yield self.store.get_state_for_event(
-            e5.event_id,
-        )
+        state = yield self.store.get_state_for_event(e5.event_id)
 
         self.assertIsNotNone(e4)
 
@@ -194,7 +186,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             state_filter=StateFilter(
                 types={EventTypes.Member: {self.u_alice.to_string()}},
                 include_others=True,
-            )
+            ),
         )
 
         self.assertStateMapEqual(
@@ -208,9 +200,9 @@ class StateStoreTestCase(tests.unittest.TestCase):
 
         # check that we can grab everything except members
         state = yield self.store.get_state_for_event(
-            e5.event_id, state_filter=StateFilter(
-                types={EventTypes.Member: set()},
-                include_others=True,
+            e5.event_id,
+            state_filter=StateFilter(
+                types={EventTypes.Member: set()}, include_others=True
             ),
         )
 
@@ -229,10 +221,10 @@ class StateStoreTestCase(tests.unittest.TestCase):
         # test _get_state_for_group_using_cache correctly filters out members
         # with types=[]
         (state_dict, is_all) = yield self.store._get_state_for_group_using_cache(
-            self.store._state_group_cache, group,
+            self.store._state_group_cache,
+            group,
             state_filter=StateFilter(
-                types={EventTypes.Member: set()},
-                include_others=True,
+                types={EventTypes.Member: set()}, include_others=True
             ),
         )
 
@@ -249,8 +241,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: set()},
-                include_others=True,
+                types={EventTypes.Member: set()}, include_others=True
             ),
         )
 
@@ -263,8 +254,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: None},
-                include_others=True,
+                types={EventTypes.Member: None}, include_others=True
             ),
         )
 
@@ -281,8 +271,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: None},
-                include_others=True,
+                types={EventTypes.Member: None}, include_others=True
             ),
         )
 
@@ -302,8 +291,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=True,
+                types={EventTypes.Member: {e5.state_key}}, include_others=True
             ),
         )
 
@@ -320,8 +308,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=True,
+                types={EventTypes.Member: {e5.state_key}}, include_others=True
             ),
         )
 
@@ -334,8 +321,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=False,
+                types={EventTypes.Member: {e5.state_key}}, include_others=False
             ),
         )
 
@@ -384,10 +370,10 @@ class StateStoreTestCase(tests.unittest.TestCase):
         # with types=[]
         room_id = self.room.to_string()
         (state_dict, is_all) = yield self.store._get_state_for_group_using_cache(
-            self.store._state_group_cache, group,
+            self.store._state_group_cache,
+            group,
             state_filter=StateFilter(
-                types={EventTypes.Member: set()},
-                include_others=True,
+                types={EventTypes.Member: set()}, include_others=True
             ),
         )
 
@@ -399,8 +385,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: set()},
-                include_others=True,
+                types={EventTypes.Member: set()}, include_others=True
             ),
         )
 
@@ -413,8 +398,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: None},
-                include_others=True,
+                types={EventTypes.Member: None}, include_others=True
             ),
         )
 
@@ -425,8 +409,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: None},
-                include_others=True,
+                types={EventTypes.Member: None}, include_others=True
             ),
         )
 
@@ -445,8 +428,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=True,
+                types={EventTypes.Member: {e5.state_key}}, include_others=True
             ),
         )
 
@@ -457,8 +439,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=True,
+                types={EventTypes.Member: {e5.state_key}}, include_others=True
             ),
         )
 
@@ -471,8 +452,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=False,
+                types={EventTypes.Member: {e5.state_key}}, include_others=False
             ),
         )
 
@@ -483,8 +463,7 @@ class StateStoreTestCase(tests.unittest.TestCase):
             self.store._state_group_members_cache,
             group,
             state_filter=StateFilter(
-                types={EventTypes.Member: {e5.state_key}},
-                include_others=False,
+                types={EventTypes.Member: {e5.state_key}}, include_others=False
             ),
         )
 
diff --git a/tests/storage/test_user_directory.py b/tests/storage/test_user_directory.py
index fd3361404f..d7d244ce97 100644
--- a/tests/storage/test_user_directory.py
+++ b/tests/storage/test_user_directory.py
@@ -36,9 +36,7 @@ class UserDirectoryStoreTestCase(unittest.TestCase):
         yield self.store.update_profile_in_user_dir(ALICE, "alice", None)
         yield self.store.update_profile_in_user_dir(BOB, "bob", None)
         yield self.store.update_profile_in_user_dir(BOBBY, "bobby", None)
-        yield self.store.add_users_in_public_rooms(
-            "!room:id", (ALICE, BOB)
-        )
+        yield self.store.add_users_in_public_rooms("!room:id", (ALICE, BOB))
 
     @defer.inlineCallbacks
     def test_search_user_dir(self):
diff --git a/tests/test_event_auth.py b/tests/test_event_auth.py
index 4c8f87e958..8b2741d277 100644
--- a/tests/test_event_auth.py
+++ b/tests/test_event_auth.py
@@ -37,7 +37,9 @@ class EventAuthTestCase(unittest.TestCase):
 
         # creator should be able to send state
         event_auth.check(
-            RoomVersions.V1.identifier, _random_state_event(creator), auth_events,
+            RoomVersions.V1.identifier,
+            _random_state_event(creator),
+            auth_events,
             do_sig_check=False,
         )
 
@@ -82,7 +84,9 @@ class EventAuthTestCase(unittest.TestCase):
 
         # king should be able to send state
         event_auth.check(
-            RoomVersions.V1.identifier, _random_state_event(king), auth_events,
+            RoomVersions.V1.identifier,
+            _random_state_event(king),
+            auth_events,
             do_sig_check=False,
         )
 
diff --git a/tests/test_federation.py b/tests/test_federation.py
index 1a5dc32c88..6a8339b561 100644
--- a/tests/test_federation.py
+++ b/tests/test_federation.py
@@ -1,4 +1,3 @@
-
 from mock import Mock
 
 from twisted.internet.defer import maybeDeferred, succeed
diff --git a/tests/test_mau.py b/tests/test_mau.py
index 00be1a8c21..1fbe0d51ff 100644
--- a/tests/test_mau.py
+++ b/tests/test_mau.py
@@ -33,9 +33,7 @@ class TestMauLimit(unittest.HomeserverTestCase):
     def make_homeserver(self, reactor, clock):
 
         self.hs = self.setup_test_homeserver(
-            "red",
-            http_client=None,
-            federation_client=Mock(),
+            "red", http_client=None, federation_client=Mock()
         )
 
         self.store = self.hs.get_datastore()
@@ -210,9 +208,7 @@ class TestMauLimit(unittest.HomeserverTestCase):
         return access_token
 
     def do_sync_for_user(self, token):
-        request, channel = self.make_request(
-            "GET", "/sync", access_token=token
-        )
+        request, channel = self.make_request("GET", "/sync", access_token=token)
         self.render(request)
 
         if channel.code != 200:
diff --git a/tests/test_metrics.py b/tests/test_metrics.py
index 0ff6d0e283..2edbae5c6d 100644
--- a/tests/test_metrics.py
+++ b/tests/test_metrics.py
@@ -44,9 +44,7 @@ def get_sample_labels_value(sample):
 class TestMauLimit(unittest.TestCase):
     def test_basic(self):
         gauge = InFlightGauge(
-            "test1", "",
-            labels=["test_label"],
-            sub_metrics=["foo", "bar"],
+            "test1", "", labels=["test_label"], sub_metrics=["foo", "bar"]
         )
 
         def handle1(metrics):
@@ -59,37 +57,49 @@ class TestMauLimit(unittest.TestCase):
 
         gauge.register(("key1",), handle1)
 
-        self.assert_dict({
-            "test1_total": {("key1",): 1},
-            "test1_foo": {("key1",): 2},
-            "test1_bar": {("key1",): 5},
-        }, self.get_metrics_from_gauge(gauge))
+        self.assert_dict(
+            {
+                "test1_total": {("key1",): 1},
+                "test1_foo": {("key1",): 2},
+                "test1_bar": {("key1",): 5},
+            },
+            self.get_metrics_from_gauge(gauge),
+        )
 
         gauge.unregister(("key1",), handle1)
 
-        self.assert_dict({
-            "test1_total": {("key1",): 0},
-            "test1_foo": {("key1",): 0},
-            "test1_bar": {("key1",): 0},
-        }, self.get_metrics_from_gauge(gauge))
+        self.assert_dict(
+            {
+                "test1_total": {("key1",): 0},
+                "test1_foo": {("key1",): 0},
+                "test1_bar": {("key1",): 0},
+            },
+            self.get_metrics_from_gauge(gauge),
+        )
 
         gauge.register(("key1",), handle1)
         gauge.register(("key2",), handle2)
 
-        self.assert_dict({
-            "test1_total": {("key1",): 1, ("key2",): 1},
-            "test1_foo": {("key1",): 2, ("key2",): 3},
-            "test1_bar": {("key1",): 5, ("key2",): 7},
-        }, self.get_metrics_from_gauge(gauge))
+        self.assert_dict(
+            {
+                "test1_total": {("key1",): 1, ("key2",): 1},
+                "test1_foo": {("key1",): 2, ("key2",): 3},
+                "test1_bar": {("key1",): 5, ("key2",): 7},
+            },
+            self.get_metrics_from_gauge(gauge),
+        )
 
         gauge.unregister(("key2",), handle2)
         gauge.register(("key1",), handle2)
 
-        self.assert_dict({
-            "test1_total": {("key1",): 2, ("key2",): 0},
-            "test1_foo": {("key1",): 5, ("key2",): 0},
-            "test1_bar": {("key1",): 7, ("key2",): 0},
-        }, self.get_metrics_from_gauge(gauge))
+        self.assert_dict(
+            {
+                "test1_total": {("key1",): 2, ("key2",): 0},
+                "test1_foo": {("key1",): 5, ("key2",): 0},
+                "test1_bar": {("key1",): 7, ("key2",): 0},
+            },
+            self.get_metrics_from_gauge(gauge),
+        )
 
     def get_metrics_from_gauge(self, gauge):
         results = {}
diff --git a/tests/test_state.py b/tests/test_state.py
index 03e4810c2e..6491a7105a 100644
--- a/tests/test_state.py
+++ b/tests/test_state.py
@@ -25,7 +25,7 @@ from synapse.state import StateHandler, StateResolutionHandler
 
 from tests import unittest
 
-from .utils import MockClock
+from .utils import MockClock, default_config
 
 _next_event_id = 1000
 
@@ -160,6 +160,7 @@ class StateTestCase(unittest.TestCase):
         self.store = StateGroupStore()
         hs = Mock(
             spec_set=[
+                "config",
                 "get_datastore",
                 "get_auth",
                 "get_state_handler",
@@ -167,6 +168,7 @@ class StateTestCase(unittest.TestCase):
                 "get_state_resolution_handler",
             ]
         )
+        hs.config = default_config("tesths", True)
         hs.get_datastore.return_value = self.store
         hs.get_state_handler.return_value = None
         hs.get_clock.return_value = MockClock()
diff --git a/tests/test_terms_auth.py b/tests/test_terms_auth.py
index 0968e86a7b..52739fbabc 100644
--- a/tests/test_terms_auth.py
+++ b/tests/test_terms_auth.py
@@ -59,7 +59,7 @@ class TermsTestCase(unittest.HomeserverTestCase):
         for flow in channel.json_body["flows"]:
             self.assertIsInstance(flow["stages"], list)
             self.assertTrue(len(flow["stages"]) > 0)
-            self.assertEquals(flow["stages"][-1], "m.login.terms")
+            self.assertTrue("m.login.terms" in flow["stages"])
 
         expected_params = {
             "m.login.terms": {
@@ -69,10 +69,10 @@ class TermsTestCase(unittest.HomeserverTestCase):
                             "name": "My Cool Privacy Policy",
                             "url": "https://example.org/_matrix/consent?v=1.0",
                         },
-                        "version": "1.0"
-                    },
-                },
-            },
+                        "version": "1.0",
+                    }
+                }
+            }
         }
         self.assertIsInstance(channel.json_body["params"], dict)
         self.assertDictContainsSubset(channel.json_body["params"], expected_params)
diff --git a/tests/test_types.py b/tests/test_types.py
index d314a7ff58..d83c36559f 100644
--- a/tests/test_types.py
+++ b/tests/test_types.py
@@ -94,8 +94,7 @@ class MapUsernameTestCase(unittest.TestCase):
 
     def testSymbols(self):
         self.assertEqual(
-            map_username_to_mxid_localpart("test=$?_1234"),
-            "test=3d=24=3f_1234",
+            map_username_to_mxid_localpart("test=$?_1234"), "test=3d=24=3f_1234"
         )
 
     def testLeadingUnderscore(self):
@@ -105,6 +104,5 @@ class MapUsernameTestCase(unittest.TestCase):
         # this should work with either a unicode or a bytes
         self.assertEqual(map_username_to_mxid_localpart(u'têst'), "t=c3=aast")
         self.assertEqual(
-            map_username_to_mxid_localpart(u'têst'.encode('utf-8')),
-            "t=c3=aast",
+            map_username_to_mxid_localpart(u'têst'.encode('utf-8')), "t=c3=aast"
         )
diff --git a/tests/test_utils/logging_setup.py b/tests/test_utils/logging_setup.py
index d0bc8e2112..fde0baee8e 100644
--- a/tests/test_utils/logging_setup.py
+++ b/tests/test_utils/logging_setup.py
@@ -22,6 +22,7 @@ from synapse.util.logcontext import LoggingContextFilter
 
 class ToTwistedHandler(logging.Handler):
     """logging handler which sends the logs to the twisted log"""
+
     tx_log = twisted.logger.Logger()
 
     def emit(self, record):
@@ -41,7 +42,8 @@ def setup_logging():
     root_logger = logging.getLogger()
 
     log_format = (
-        "%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s"
+        "%(asctime)s - %(name)s - %(lineno)d - "
+        "%(levelname)s - %(request)s - %(message)s"
     )
 
     handler = ToTwistedHandler()
diff --git a/tests/test_visibility.py b/tests/test_visibility.py
index 3bdb500514..6a180ddc32 100644
--- a/tests/test_visibility.py
+++ b/tests/test_visibility.py
@@ -132,7 +132,7 @@ class FilterEventsForServerTestCase(tests.unittest.TestCase):
                 "state_key": "",
                 "room_id": TEST_ROOM_ID,
                 "content": content,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
@@ -153,7 +153,7 @@ class FilterEventsForServerTestCase(tests.unittest.TestCase):
                 "state_key": user_id,
                 "room_id": TEST_ROOM_ID,
                 "content": content,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
@@ -174,7 +174,7 @@ class FilterEventsForServerTestCase(tests.unittest.TestCase):
                 "sender": user_id,
                 "room_id": TEST_ROOM_ID,
                 "content": content,
-            }
+            },
         )
 
         event, context = yield self.event_creation_handler.create_new_client_event(
diff --git a/tests/unittest.py b/tests/unittest.py
index 8c65736a51..b6dc7932ce 100644
--- a/tests/unittest.py
+++ b/tests/unittest.py
@@ -27,10 +27,12 @@ import twisted.logger
 from twisted.internet.defer import Deferred
 from twisted.trial import unittest
 
+from synapse.api.constants import EventTypes
+from synapse.config.homeserver import HomeServerConfig
 from synapse.http.server import JsonResource
 from synapse.http.site import SynapseRequest
 from synapse.server import HomeServer
-from synapse.types import UserID, create_requester
+from synapse.types import Requester, UserID, create_requester
 from synapse.util.logcontext import LoggingContext
 
 from tests.server import get_clock, make_request, render, setup_test_homeserver
@@ -84,9 +86,8 @@ class TestCase(unittest.TestCase):
             # all future bets are off.
             if LoggingContext.current_context() is not LoggingContext.sentinel:
                 self.fail(
-                    "Test starting with non-sentinel logging context %s" % (
-                        LoggingContext.current_context(),
-                    )
+                    "Test starting with non-sentinel logging context %s"
+                    % (LoggingContext.current_context(),)
                 )
 
             old_level = logging.getLogger().level
@@ -181,10 +182,7 @@ class HomeserverTestCase(TestCase):
             raise Exception("A homeserver wasn't returned, but %r" % (self.hs,))
 
         # Register the resources
-        self.resource = JsonResource(self.hs)
-
-        for servlet in self.servlets:
-            servlet(self.hs, self.resource)
+        self.resource = self.create_test_json_resource()
 
         from tests.rest.client.v1.utils import RestHelper
 
@@ -230,9 +228,26 @@ class HomeserverTestCase(TestCase):
         hs = self.setup_test_homeserver()
         return hs
 
+    def create_test_json_resource(self):
+        """
+        Create a test JsonResource, with the relevant servlets registerd to it
+
+        The default implementation calls each function in `servlets` to do the
+        registration.
+
+        Returns:
+            JsonResource:
+        """
+        resource = JsonResource(self.hs)
+
+        for servlet in self.servlets:
+            servlet(self.hs, resource)
+
+        return resource
+
     def default_config(self, name="test"):
         """
-        Get a default HomeServer config object.
+        Get a default HomeServer config dict.
 
         Args:
             name (str): The homeserver name/domain.
@@ -286,7 +301,13 @@ class HomeserverTestCase(TestCase):
             content = json.dumps(content).encode('utf8')
 
         return make_request(
-            self.reactor, method, path, content, access_token, request, shorthand,
+            self.reactor,
+            method,
+            path,
+            content,
+            access_token,
+            request,
+            shorthand,
             federation_auth_origin,
         )
 
@@ -316,7 +337,14 @@ class HomeserverTestCase(TestCase):
         kwargs.update(self._hs_args)
         if "config" not in kwargs:
             config = self.default_config()
-            kwargs["config"] = config
+        else:
+            config = kwargs["config"]
+
+        # Parse the config from a config dict into a HomeServerConfig
+        config_obj = HomeServerConfig()
+        config_obj.parse_config_dict(config)
+        kwargs["config"] = config_obj
+
         hs = setup_test_homeserver(self.addCleanup, *args, **kwargs)
         stor = hs.get_datastore()
 
@@ -414,3 +442,73 @@ class HomeserverTestCase(TestCase):
 
         access_token = channel.json_body["access_token"]
         return access_token
+
+    def create_and_send_event(
+        self, room_id, user, soft_failed=False, prev_event_ids=None
+    ):
+        """
+        Create and send an event.
+
+        Args:
+            soft_failed (bool): Whether to create a soft failed event or not
+            prev_event_ids (list[str]|None): Explicitly set the prev events,
+                or if None just use the default
+
+        Returns:
+            str: The new event's ID.
+        """
+        event_creator = self.hs.get_event_creation_handler()
+        secrets = self.hs.get_secrets()
+        requester = Requester(user, None, False, None, None)
+
+        prev_events_and_hashes = None
+        if prev_event_ids:
+            prev_events_and_hashes = [[p, {}, 0] for p in prev_event_ids]
+
+        event, context = self.get_success(
+            event_creator.create_event(
+                requester,
+                {
+                    "type": EventTypes.Message,
+                    "room_id": room_id,
+                    "sender": user.to_string(),
+                    "content": {"body": secrets.token_hex(), "msgtype": "m.text"},
+                },
+                prev_events_and_hashes=prev_events_and_hashes,
+            )
+        )
+
+        if soft_failed:
+            event.internal_metadata.soft_failed = True
+
+        self.get_success(
+            event_creator.send_nonmember_event(requester, event, context)
+        )
+
+        return event.event_id
+
+    def add_extremity(self, room_id, event_id):
+        """
+        Add the given event as an extremity to the room.
+        """
+        self.get_success(
+            self.hs.get_datastore()._simple_insert(
+                table="event_forward_extremities",
+                values={"room_id": room_id, "event_id": event_id},
+                desc="test_add_extremity",
+            )
+        )
+
+        self.hs.get_datastore().get_latest_event_ids_in_room.invalidate((room_id,))
+
+    def attempt_wrong_password_login(self, username, password):
+        """Attempts to login as the user with the given password, asserting
+        that the attempt *fails*.
+        """
+        body = {"type": "m.login.password", "user": username, "password": password}
+
+        request, channel = self.make_request(
+            "POST", "/_matrix/client/r0/login", json.dumps(body).encode('utf8')
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 403, channel.result)
diff --git a/tests/util/test_async_utils.py b/tests/util/test_async_utils.py
index 84dd71e47a..bf85d3b8ec 100644
--- a/tests/util/test_async_utils.py
+++ b/tests/util/test_async_utils.py
@@ -42,10 +42,10 @@ class TimeoutDeferredTest(TestCase):
         self.assertNoResult(timing_out_d)
         self.assertFalse(cancelled[0], "deferred was cancelled prematurely")
 
-        self.clock.pump((1.0, ))
+        self.clock.pump((1.0,))
 
         self.assertTrue(cancelled[0], "deferred was not cancelled by timeout")
-        self.failureResultOf(timing_out_d, defer.TimeoutError, )
+        self.failureResultOf(timing_out_d, defer.TimeoutError)
 
     def test_times_out_when_canceller_throws(self):
         """Test that we have successfully worked around
@@ -59,9 +59,9 @@ class TimeoutDeferredTest(TestCase):
 
         self.assertNoResult(timing_out_d)
 
-        self.clock.pump((1.0, ))
+        self.clock.pump((1.0,))
 
-        self.failureResultOf(timing_out_d, defer.TimeoutError, )
+        self.failureResultOf(timing_out_d, defer.TimeoutError)
 
     def test_logcontext_is_preserved_on_cancellation(self):
         blocking_was_cancelled = [False]
@@ -80,10 +80,10 @@ class TimeoutDeferredTest(TestCase):
             # the errbacks should be run in the test logcontext
             def errback(res, deferred_name):
                 self.assertIs(
-                    LoggingContext.current_context(), context_one,
-                    "errback %s run in unexpected logcontext %s" % (
-                        deferred_name, LoggingContext.current_context(),
-                    )
+                    LoggingContext.current_context(),
+                    context_one,
+                    "errback %s run in unexpected logcontext %s"
+                    % (deferred_name, LoggingContext.current_context()),
                 )
                 return res
 
@@ -94,11 +94,10 @@ class TimeoutDeferredTest(TestCase):
             self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
             timing_out_d.addErrback(errback, "timingout")
 
-            self.clock.pump((1.0, ))
+            self.clock.pump((1.0,))
 
             self.assertTrue(
-                blocking_was_cancelled[0],
-                "non-completing deferred was not cancelled",
+                blocking_was_cancelled[0], "non-completing deferred was not cancelled"
             )
-            self.failureResultOf(timing_out_d, defer.TimeoutError, )
+            self.failureResultOf(timing_out_d, defer.TimeoutError)
             self.assertIs(LoggingContext.current_context(), context_one)
diff --git a/tests/util/test_linearizer.py b/tests/util/test_linearizer.py
index 61a55b461b..ec7ba9719c 100644
--- a/tests/util/test_linearizer.py
+++ b/tests/util/test_linearizer.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/utils.py b/tests/utils.py
index cb75514851..f8c7ad2604 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -31,6 +31,7 @@ from synapse.api.constants import EventTypes
 from synapse.api.errors import CodeMessageException, cs_error
 from synapse.api.room_versions import RoomVersions
 from synapse.config.homeserver import HomeServerConfig
+from synapse.config.server import DEFAULT_ROOM_VERSION
 from synapse.federation.transport import server as federation_server
 from synapse.http.server import HttpServer
 from synapse.server import HomeServer
@@ -68,7 +69,9 @@ def setupdb():
 
         # connect to postgres to create the base database.
         db_conn = db_engine.module.connect(
-            user=POSTGRES_USER, host=POSTGRES_HOST, password=POSTGRES_PASSWORD,
+            user=POSTGRES_USER,
+            host=POSTGRES_HOST,
+            password=POSTGRES_PASSWORD,
             dbname=POSTGRES_DBNAME_FOR_INITIAL_CREATE,
         )
         db_conn.autocommit = True
@@ -94,7 +97,9 @@ def setupdb():
 
         def _cleanup():
             db_conn = db_engine.module.connect(
-                user=POSTGRES_USER, host=POSTGRES_HOST, password=POSTGRES_PASSWORD,
+                user=POSTGRES_USER,
+                host=POSTGRES_HOST,
+                password=POSTGRES_PASSWORD,
                 dbname=POSTGRES_DBNAME_FOR_INITIAL_CREATE,
             )
             db_conn.autocommit = True
@@ -106,7 +111,7 @@ def setupdb():
         atexit.register(_cleanup)
 
 
-def default_config(name):
+def default_config(name, parse=False):
     """
     Create a reasonable test config.
     """
@@ -114,79 +119,73 @@ def default_config(name):
         "server_name": name,
         "media_store_path": "media",
         "uploads_path": "uploads",
-
         # the test signing key is just an arbitrary ed25519 key to keep the config
         # parser happy
         "signing_key": "ed25519 a_lPym qvioDNmfExFBRPgdTU+wtFYKq4JfwFRv7sYVgWvmgJg",
+        "event_cache_size": 1,
+        "enable_registration": True,
+        "enable_registration_captcha": False,
+        "macaroon_secret_key": "not even a little secret",
+        "expire_access_token": False,
+        "trusted_third_party_id_servers": [],
+        "room_invite_state_types": [],
+        "password_providers": [],
+        "worker_replication_url": "",
+        "worker_app": None,
+        "block_non_admin_invites": False,
+        "federation_domain_whitelist": None,
+        "filter_timeline_limit": 5000,
+        "user_directory_search_all_users": False,
+        "user_consent_server_notice_content": None,
+        "block_events_without_consent_error": None,
+        "user_consent_at_registration": False,
+        "user_consent_policy_name": "Privacy Policy",
+        "media_storage_providers": [],
+        "autocreate_auto_join_rooms": True,
+        "auto_join_rooms": [],
+        "limit_usage_by_mau": False,
+        "hs_disabled": False,
+        "hs_disabled_message": "",
+        "hs_disabled_limit_type": "",
+        "max_mau_value": 50,
+        "mau_trial_days": 0,
+        "mau_stats_only": False,
+        "mau_limits_reserved_threepids": [],
+        "admin_contact": None,
+        "rc_federation": {
+            "reject_limit": 10,
+            "sleep_limit": 10,
+            "sleep_delay": 10,
+            "concurrent": 10,
+        },
+        "rc_message": {"per_second": 10000, "burst_count": 10000},
+        "rc_registration": {"per_second": 10000, "burst_count": 10000},
+        "rc_login": {
+            "address": {"per_second": 10000, "burst_count": 10000},
+            "account": {"per_second": 10000, "burst_count": 10000},
+            "failed_attempts": {"per_second": 10000, "burst_count": 10000},
+        },
+        "saml2_enabled": False,
+        "public_baseurl": None,
+        "default_identity_server": None,
+        "key_refresh_interval": 24 * 60 * 60 * 1000,
+        "old_signing_keys": {},
+        "tls_fingerprints": [],
+        "use_frozen_dicts": False,
+        # We need a sane default_room_version, otherwise attempts to create
+        # rooms will fail.
+        "default_room_version": DEFAULT_ROOM_VERSION,
+        # disable user directory updates, because they get done in the
+        # background, which upsets the test runner.
+        "update_user_directory": False,
     }
 
-    config = HomeServerConfig()
-    config.parse_config_dict(config_dict)
+    if parse:
+        config = HomeServerConfig()
+        config.parse_config_dict(config_dict)
+        return config
 
-    # TODO: move this stuff into config_dict or get rid of it
-    config.event_cache_size = 1
-    config.enable_registration = True
-    config.enable_registration_captcha = False
-    config.macaroon_secret_key = "not even a little secret"
-    config.expire_access_token = False
-    config.trusted_third_party_id_servers = []
-    config.room_invite_state_types = []
-    config.password_providers = []
-    config.worker_replication_url = ""
-    config.worker_app = None
-    config.email_enable_notifs = False
-    config.block_non_admin_invites = False
-    config.federation_domain_whitelist = None
-    config.federation_rc_reject_limit = 10
-    config.federation_rc_sleep_limit = 10
-    config.federation_rc_sleep_delay = 100
-    config.federation_rc_concurrent = 10
-    config.filter_timeline_limit = 5000
-    config.user_directory_search_all_users = False
-    config.user_consent_server_notice_content = None
-    config.block_events_without_consent_error = None
-    config.user_consent_at_registration = False
-    config.user_consent_policy_name = "Privacy Policy"
-    config.media_storage_providers = []
-    config.autocreate_auto_join_rooms = True
-    config.auto_join_rooms = []
-    config.limit_usage_by_mau = False
-    config.hs_disabled = False
-    config.hs_disabled_message = ""
-    config.hs_disabled_limit_type = ""
-    config.max_mau_value = 50
-    config.mau_trial_days = 0
-    config.mau_stats_only = False
-    config.mau_limits_reserved_threepids = []
-    config.admin_contact = None
-    config.rc_messages_per_second = 10000
-    config.rc_message_burst_count = 10000
-    config.rc_registration.per_second = 10000
-    config.rc_registration.burst_count = 10000
-    config.rc_login_address.per_second = 10000
-    config.rc_login_address.burst_count = 10000
-    config.rc_login_account.per_second = 10000
-    config.rc_login_account.burst_count = 10000
-    config.rc_login_failed_attempts.per_second = 10000
-    config.rc_login_failed_attempts.burst_count = 10000
-    config.saml2_enabled = False
-    config.public_baseurl = None
-    config.default_identity_server = None
-    config.key_refresh_interval = 24 * 60 * 60 * 1000
-    config.old_signing_keys = {}
-    config.tls_fingerprints = []
-
-    config.use_frozen_dicts = False
-
-    # we need a sane default_room_version, otherwise attempts to create rooms will
-    # fail.
-    config.default_room_version = "1"
-
-    # disable user directory updates, because they get done in the
-    # background, which upsets the test runner.
-    config.update_user_directory = False
-
-    return config
+    return config_dict
 
 
 class TestHomeServer(HomeServer):
@@ -220,7 +219,7 @@ def setup_test_homeserver(
         from twisted.internet import reactor
 
     if config is None:
-        config = default_config(name)
+        config = default_config(name, parse=True)
 
     config.ldap_enabled = False
 
@@ -377,12 +376,7 @@ def register_federation_servlets(hs, resource):
         resource=resource,
         authenticator=federation_server.Authenticator(hs),
         ratelimiter=FederationRateLimiter(
-            hs.get_clock(),
-            window_size=hs.config.federation_rc_window_size,
-            sleep_limit=hs.config.federation_rc_sleep_limit,
-            sleep_msec=hs.config.federation_rc_sleep_delay,
-            reject_limit=hs.config.federation_rc_reject_limit,
-            concurrent_requests=hs.config.federation_rc_concurrent,
+            hs.get_clock(), config=hs.config.rc_federation
         ),
     )
 
diff --git a/tox.ini b/tox.ini
index ef543890f9..0c4d562766 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = packaging, py27, py36, pep8, check_isort
+envlist = packaging, py35, py36, py37, pep8, check_isort
 
 [base]
 deps =
@@ -24,6 +24,11 @@ deps =
     pip>=10
 
 setenv =
+    # we have a pyproject.toml, but don't want pip to use it for building.
+    # (otherwise we get an error about 'editable mode is not supported for
+    # pyproject.toml-style projects').
+    PIP_USE_PEP517 = false
+
     PYTHONDONTWRITEBYTECODE = no_byte_code
     COVERAGE_PROCESS_START = {toxinidir}/.coveragerc
 
@@ -74,7 +79,7 @@ usedevelop=true
 
 # A test suite for the oldest supported versions of Python libraries, to catch
 # any uses of APIs not available in them.
-[testenv:py27-old]
+[testenv:py35-old]
 skip_install=True
 deps =
     # Old automat version for Twisted
@@ -89,7 +94,7 @@ commands =
     # Make all greater-thans equals so we test the oldest version of our direct
     # dependencies, but make the pyopenssl 17.0, which can work against an
     # OpenSSL 1.1 compiled cryptography (as older ones don't compile on Travis).
-    /bin/sh -c 'python -m synapse.python_dependencies | sed -e "s/>=/==/g" -e "s/psycopg2==2.6//" -e "s/pyopenssl==16.0.0/pyopenssl==17.0.0/" | xargs pip install'
+    /bin/sh -c 'python -m synapse.python_dependencies | sed -e "s/>=/==/g" -e "s/psycopg2==2.6//" -e "s/pyopenssl==16.0.0/pyopenssl==17.0.0/" | xargs -d"\n" pip install'
 
     # Add this so that coverage will run on subprocesses
     /bin/sh -c 'echo "import coverage; coverage.process_startup()" > {envsitepackagesdir}/../sitecustomize.py'