From ca05b679e34946053a09c81f7a350978aa11b4cf Mon Sep 17 00:00:00 2001 From: Amber Brown Date: Mon, 19 Nov 2018 12:27:33 -0600 Subject: [PATCH] Fix fallback auth on Python 3 (#4197) --- changelog.d/4197.bugfix | 1 + synapse/rest/client/v2_alpha/auth.py | 40 ++++----- tests/rest/client/v2_alpha/test_auth.py | 104 ++++++++++++++++++++++++ 3 files changed, 122 insertions(+), 23 deletions(-) create mode 100644 changelog.d/4197.bugfix create mode 100644 tests/rest/client/v2_alpha/test_auth.py diff --git a/changelog.d/4197.bugfix b/changelog.d/4197.bugfix new file mode 100644 index 0000000000..c7c01da0f3 --- /dev/null +++ b/changelog.d/4197.bugfix @@ -0,0 +1 @@ +Fallback auth now accepts the session parameter on Python 3. diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py index c39f53b987..fa73bdf3a1 100644 --- a/synapse/rest/client/v2_alpha/auth.py +++ b/synapse/rest/client/v2_alpha/auth.py @@ -21,7 +21,7 @@ from synapse.api.constants import LoginType from synapse.api.errors import SynapseError from synapse.api.urls import CLIENT_V2_ALPHA_PREFIX from synapse.http.server import finish_request -from synapse.http.servlet import RestServlet +from synapse.http.servlet import RestServlet, parse_string from ._base import client_v2_patterns @@ -131,16 +131,12 @@ class AuthRestServlet(RestServlet): self.auth_handler = hs.get_auth_handler() self.registration_handler = hs.get_handlers().registration_handler - @defer.inlineCallbacks def on_GET(self, request, stagetype): - yield + session = parse_string(request, "session") + if not session: + raise SynapseError(400, "No session supplied") + if stagetype == LoginType.RECAPTCHA: - if ('session' not in request.args or - len(request.args['session']) == 0): - raise SynapseError(400, "No session supplied") - - session = request.args["session"][0] - html = RECAPTCHA_TEMPLATE % { 'session': session, 'myurl': "%s/auth/%s/fallback/web" % ( @@ -155,10 +151,8 @@ class AuthRestServlet(RestServlet): request.write(html_bytes) finish_request(request) - defer.returnValue(None) + return None elif stagetype == LoginType.TERMS: - session = request.args['session'][0] - html = TERMS_TEMPLATE % { 'session': session, 'terms_url': "%s_matrix/consent?v=%s" % ( @@ -176,25 +170,25 @@ class AuthRestServlet(RestServlet): request.write(html_bytes) finish_request(request) - defer.returnValue(None) + return None else: raise SynapseError(404, "Unknown auth stage type") @defer.inlineCallbacks def on_POST(self, request, stagetype): - yield - if stagetype == LoginType.RECAPTCHA: - if ('g-recaptcha-response' not in request.args or - len(request.args['g-recaptcha-response'])) == 0: - raise SynapseError(400, "No captcha response supplied") - if ('session' not in request.args or - len(request.args['session'])) == 0: - raise SynapseError(400, "No session supplied") - session = request.args['session'][0] + session = parse_string(request, "session") + if not session: + raise SynapseError(400, "No session supplied") + + if stagetype == LoginType.RECAPTCHA: + response = parse_string(request, "g-recaptcha-response") + + if not response: + raise SynapseError(400, "No captcha response supplied") authdict = { - 'response': request.args['g-recaptcha-response'][0], + 'response': response, 'session': session, } diff --git a/tests/rest/client/v2_alpha/test_auth.py b/tests/rest/client/v2_alpha/test_auth.py new file mode 100644 index 0000000000..7fa120a10f --- /dev/null +++ b/tests/rest/client/v2_alpha/test_auth.py @@ -0,0 +1,104 @@ +# -*- coding: utf-8 -*- +# Copyright 2018 New Vector +# +# 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.defer import succeed + +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 + + +class FallbackAuthTests(unittest.HomeserverTestCase): + + servlets = [ + auth.register_servlets, + admin.register_servlets, + register.register_servlets, + ] + hijack_auth = False + + def make_homeserver(self, reactor, clock): + + config = self.default_config() + + config.enable_registration_captcha = True + config.recaptcha_public_key = "brokencake" + config.registrations_require_3pid = [] + + hs = self.setup_test_homeserver(config=config) + return hs + + def prepare(self, reactor, clock, hs): + auth_handler = hs.get_auth_handler() + + self.recaptcha_attempts = [] + + def _recaptcha(authdict, clientip): + self.recaptcha_attempts.append((authdict, clientip)) + return succeed(True) + + auth_handler.checkers[LoginType.RECAPTCHA] = _recaptcha + + @unittest.INFO + def test_fallback_captcha(self): + + request, channel = self.make_request( + "POST", + "register", + {"username": "user", "type": "m.login.password", "password": "bar"}, + ) + self.render(request) + + # Returns a 401 as per the spec + self.assertEqual(request.code, 401) + # Grab the session + session = channel.json_body["session"] + # Assert our configured public key is being given + self.assertEqual( + channel.json_body["params"]["m.login.recaptcha"]["public_key"], "brokencake" + ) + + request, channel = self.make_request( + "GET", "auth/m.login.recaptcha/fallback/web?session=" + session + ) + self.render(request) + self.assertEqual(request.code, 200) + + request, channel = self.make_request( + "POST", + "auth/m.login.recaptcha/fallback/web?session=" + + session + + "&g-recaptcha-response=a", + ) + self.render(request) + self.assertEqual(request.code, 200) + + # The recaptcha handler is called with the response given + 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 + # request to the register API with the session in the authdict. + request, channel = self.make_request( + "POST", "register", {"auth": {"session": session}} + ) + self.render(request) + self.assertEqual(channel.code, 200) + + # We're given a registered user. + self.assertEqual(channel.json_body["user_id"], "@user:test")