Social features / ActivityPub federation (#1629)

* Support webfinger requests for the live account. Closes https://github.com/owncast/owncast/issues/1193

* Support for actor requests. Returns response for live actor. Closes https://github.com/owncast/owncast/issues/1203

* Handle follow and unfollow requests. Closes
https://github.com/owncast/owncast/issues/1191 and https://github.com/owncast/owncast/issues/1205 and https://github.com/owncast/owncast/issues/1206 and https://github.com/owncast/owncast/issues/1194

* Add basic support for sending out text activities. For https://github.com/owncast/owncast/issues/1192

* Some error handling and passing of dynamic local account names.

* Add hardcoded example image attachment to test post

* Centralize the map of accounts and inboxes

* No longer disable the preview generator based on YP toggle

* Send a federated message to followers when stream starts. For https://github.com/owncast/owncast/issues/1192

* Placeholder for attaching tags

* Add image description

* Save and get to outbox persistence. Return using outbox endpoint for actor

* Pass payloads to be handled through the gochan

* Handle undo follow requests explitly, not all undo requests

* Add API for manually sending simple federated messages. Closes #1215

* Verify inbox requests. Closes #1321

* Add route to fetch a single AP object by ID. For #1329

* Add responses to fediverse nodeinfo requests

* Set and get federation config values for admin

* Handle host-meta requests

* Do not send out message if disabled. Use saved go live message.

* Require AP-compatible content types for AP-related requests

* Rename ap models to apmodels for clarity

* Change how content type matching takes place.

* io -> ioutil

* Add stub delete activity callback

* Handle likes and announces to surface engagement in chat. Part of #1229

* Append url to go live posts

* Do not require specific content types for nodeinfo requests

* Add follow engagement chat message via AP

* add owncast user-agent to requests

* Set note visibility to public (for now)

* Fix saving/fetching a single object

* Add support for x-nodeinfo2 responses

* Point to the dev admin branch for ap

* Bundle in dev admin for testing

* Add error logging

* Add AP middleware back

* Point to the new external compatible logo endpoint

* Clean up more AP logging to help testing

* Tweak go live text and link hashtags

* Fix bug in fetching init time

* Send update actor activities when server details/profile is updated

* Add federation config overview to web client config

* Add additional actor properties

* Make the AP middleware checking more flexible when looking at types

* First pass at remote fediverse follow flow. For #1371

* Added a basic AP actor followers endpoint

* WIP client followers API

* Add profile-page reference to webfinger response

* Add aliases to webfinger response

* Fix content-type returned to be expected activitypub+json

* First pass at followers api

* Point at local dev copy of go-fed/activity

* Add custom toot Hashtag objects to posts

* Store additional user details to followers table

* Fix AP followers endpoint. Closes #1204

* Add owncast hashtag as an invisible tag to go live posts

* Reject AP requests when it is disabled

* Add actor util for generating full account user from person object

* Verify inbox requests before performing any other work

* Accept actor update requests

* Fix linter errors in federation branch

* Migrate AP SQL to sqlc for type safe queries

* Use the @unclearParadigm REST parameter helper

* Fix verifying post ID on AP engagement

* WIP privacy/request approval

* Style the remote follow modal

* First pass at a followers list component w/ mock data. #1370

* Revert "Use the @unclearParadigm REST parameter helper"

This reverts commit c8af8a413f.

* Fix get followers API

* Add support for requiring approval. Closes https://github.com/owncast/owncast/issues/1208

* Handle Applications as Actors partly for PeerTube support

* add temp todo list

* check route on load, this might change later

* style followers

* account for just 1 tab case

* Remove mock data. Allow showing follow button even when there are no external actions defined

* Point to actual followers API

* Support fallback img for follower views

* Remove duplicate verification. Add some additional verbose logging

* Bundle dev admin

* Add type to host-meta webfinger template response

* Tweak remote follow modal content

* WIP federation followers refactor

* Do not send pointer to middleware

* Update admin

* Add setting for toggling displaying fediverse engagement. Closes #1404

* Add in-development admin

* Do not enable cors on admin followers api

* Add db migration for updating messages table

* Enable empty string go live messages to disable

* Remove debug messages

* Rework some ActivityPub handling.

Create new Actor->Person handling.
Create new Actor->Service handling.
Add engagement handlers to send chat events and store event objects.
Store inbound activities to new ap_inbound_activities table.

* Support federated engagement events.

Store them in the messages table and surface them via chat events.

* Support federated event engatement in the chat

* Tweak web UI followers handling

* Point go.mod at remote fork instead of local

* Update admin

* Merged in develop. Couple fixes

* Update dev admin

* Update fedi engagement posts.

- Fix incorrect action text.
- Add action icons.

* Set public as to instead of cc for ap msg

* Updated styling for federated actions in chat

* Add support for blocking federated domains. Closes #1209

* Force checking of https in verify step

* Update dev admin

* Return user scopes in chat history api. Closes #1586

* Update dev admin

* Add AP outbound request worker pool. Closes #1571

* Disable (temporarily?) owncast tag on AP posts

* Consolidate creating activity+notes in outbound AP messages

* Add inbox worker pool. Closes #1570

* Update dev admin bundle

* Clean up some logs

* Re-enable inbound verfication

* Save full IRI to outbox instead of path

* Reject if full IRI is not found in outbox

* Use full ActivityPub user account in chat event

* Fix and expand follower APIs

- Add missing IDs to AP follower endpoints
- Split AP follower endpoints into initial request and pages.
- Support pagination in AP requests.

* Include IRI in error message

* Hide chat toggle when chat is hidden. Closes #1606

* Updates to followers pagination

* Set default go live message

* Remove log

* indirect -> direct import

* Updates for inbound federated event handling.

- Keep track of existing events and reject duplicates.
- Change what is sent to chat for surfing federated engagement.
- Keep track if outbound events are automated "go live" events or not.

* Update chat federated engagement.

* Update dev admin.

* Move from being a person to a bot (service). Closes #1619

* Only set server init date if not already set

* Only save notes to outbox able

* Rework private-mode followers/approvals

* API for returning a list of federated actions for #1573

* Fix too-small follower cells and jumpy tabs. Closes #1616 and closes #1516

* Fix shortcuts getting fired on inputs. Fixes #1489 and #1201

* Add spinner, autoclose + other fixes to follow modal. Fixes #1593

* Fix fetching a single object by IRI

* SendFederationMessage -> SendFederatedMessage

* Autolink and create tag objects from manual posts. Closes #1620

* Update dev admin bundle

* Handle engagement from non-automated/live posts

* Reject federated engagement actions if they do not match a local post

* Update dev admin bundle

* A bunch of cleanup

* Fix unused assignments and logic

* Remove unused function

* Add content warning and sentive content flag if stream is NSFW. Closes #1624

* Disable fetching objects by IRI when in private mode. Closes #1623

* Update the error message of the remote follow dialog. closes #1622

* Update dev admin

* Fix NREs throwing in test content

* Fix query that wasn't properly filtering out hidden messages

* Test against user being disabled instead of message visibility

* Fix automated test NRE

* Update comment

* Adjust federated engagement chat views. Closes #1617

* Add additional index to users table

* Add support for removing followers/requests. Closes #1630

* Reject federated actions from blocked actors. #1631

* Use fallback avatar if it fails to load. Closes #1635

* Fix styling of follower list. Closes #1636

* Add basic blurb stating they should follow the server. Closes #1641

* Update dev admin

* Set default go live message in migration. Closes #1642

* Reset the messages table on 0.0.11 schema migration

* Fix js error with moderation actions. Closes #1621

* Add a bit more clarification on follow modal. Closes #1599

* Remove todos

* Split out actor and domain blocking checks

* Check for errors on default values being set

* Clean up actor rejection due to being blocked

* Update dev admin

* Add colon to error to make it easier to read

* Remove markdown rendering of go live message. Reorganize text. Remove content warning. Closes #1645

* Break out the sort+render messages logic so it can be fired on visibility change. Closes #1643

* Do not send profile updates if federation is disabled

* Save follow references to inbound activities table

* Update dev admin

* Add blocked actor test

* Remove the overloaded term of Follow from social links

* Fix test running in memory only

* Remove "just" in engagement messags

* Replace star with heart for like action.

* Update dev admin

* Explicitly set cc as public

* Remove overly using the stream name in fediverse engagement messages

* Some federated/follow UI tweaks

* Remove explicit cc and bcc as they are not required

* Explicitly set the audience

* Remove extra margin

* Add Join Fediverse button to follow modal. Closes #1651

* Do not allow multiple follows to send multiple events. Closes #1650

* Give events a min height

* Do not allow old posts to be liked/shared. Closes #1652

* Remove value from log message

* Alert followers on private mode toggle

* Ignore clicks to follow button if disabled

* Remove underline from action buttons

* Add moderator icon to join message

* Update admin

* Post-merge remove unused var

* Remove pointing at feature branch

Co-authored-by: Ginger Wong <omqmail@gmail.com>

.golangci.yml

@@ -81,3 +81,7 @@ linters-settings:
         # Logging via Print bypasses our logging framework.
       - ^(fmt\.Print(|f|ln)|print|println)
       - ^panic.*$
+
+  dupl:
+    # tokens count to trigger issue, 150 by default
+    threshold: 160

activitypub/activitypub.go

@@ -0,0 +1,51 @@
+package activitypub
+
+import (
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/inbox"
+	"github.com/owncast/owncast/activitypub/outbox"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/workerpool"
+
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/models"
+	log "github.com/sirupsen/logrus"
+)
+
+// Start will initialize and start the federation support.
+func Start(datastore *data.Datastore) {
+	persistence.Setup(datastore)
+	workerpool.InitOutboundWorkerPool()
+	inbox.InitInboxWorkerPool()
+	StartRouter()
+
+	// Test
+	if data.GetPrivateKey() == "" {
+		privateKey, publicKey, err := crypto.GenerateKeys()
+		_ = data.SetPrivateKey(string(privateKey))
+		_ = data.SetPublicKey(string(publicKey))
+		if err != nil {
+			log.Errorln("Unable to get private key", err)
+		}
+	}
+}
+
+// SendLive will send a "Go Live" message to followers.
+func SendLive() error {
+	return outbox.SendLive()
+}
+
+// SendPublicFederatedMessage will send an arbitrary provided message to followers.
+func SendPublicFederatedMessage(message string) error {
+	return outbox.SendPublicMessage(message)
+}
+
+// GetFollowerCount will return the local tracked follower count.
+func GetFollowerCount() (int64, error) {
+	return persistence.GetFollowerCount()
+}
+
+// GetPendingFollowRequests will return the pending follow requests.
+func GetPendingFollowRequests() ([]models.Follower, error) {
+	return persistence.GetPendingFollowRequests()
+}

activitypub/apmodels/activity.go

@@ -0,0 +1,88 @@
+package apmodels
+
+import (
+	"net/url"
+	"time"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/core/data"
+)
+
+// PrivacyAudience represents the audience for an activity.
+type PrivacyAudience = string
+
+const (
+	// PUBLIC is an audience meaning anybody can view the item.
+	PUBLIC PrivacyAudience = "https://www.w3.org/ns/activitystreams#Public"
+)
+
+// MakeCreateActivity will return a new Create activity with the provided ID.
+func MakeCreateActivity(activityID *url.URL) vocab.ActivityStreamsCreate {
+	activity := streams.NewActivityStreamsCreate()
+	id := streams.NewJSONLDIdProperty()
+	id.Set(activityID)
+	activity.SetJSONLDId(id)
+
+	// CC the public if we're not treating ActivityPub as "private".
+	if !data.GetFederationIsPrivate() {
+		public, _ := url.Parse(PUBLIC)
+		to := streams.NewActivityStreamsToProperty()
+		to.AppendIRI(public)
+		activity.SetActivityStreamsTo(to)
+
+		audience := streams.NewActivityStreamsAudienceProperty()
+		audience.AppendIRI(public)
+		activity.SetActivityStreamsAudience(audience)
+	}
+
+	return activity
+}
+
+// MakeUpdateActivity will return a new Update activity with the provided aID.
+func MakeUpdateActivity(activityID *url.URL) vocab.ActivityStreamsUpdate {
+	activity := streams.NewActivityStreamsUpdate()
+	id := streams.NewJSONLDIdProperty()
+	id.Set(activityID)
+	activity.SetJSONLDId(id)
+
+	// CC the public if we're not treating ActivityPub as "private".
+	if !data.GetFederationIsPrivate() {
+		public, _ := url.Parse(PUBLIC)
+		cc := streams.NewActivityStreamsCcProperty()
+		cc.AppendIRI(public)
+		activity.SetActivityStreamsCc(cc)
+	}
+
+	return activity
+}
+
+// MakeNote will return a new Note object.
+func MakeNote(text string, noteIRI *url.URL, attributedToIRI *url.URL) vocab.ActivityStreamsNote {
+	note := streams.NewActivityStreamsNote()
+	content := streams.NewActivityStreamsContentProperty()
+	content.AppendXMLSchemaString(text)
+	note.SetActivityStreamsContent(content)
+	id := streams.NewJSONLDIdProperty()
+	id.Set(noteIRI)
+	note.SetJSONLDId(id)
+
+	published := streams.NewActivityStreamsPublishedProperty()
+	published.Set(time.Now())
+	note.SetActivityStreamsPublished(published)
+
+	attributedTo := attributedToIRI
+	attr := streams.NewActivityStreamsAttributedToProperty()
+	attr.AppendIRI(attributedTo)
+	note.SetActivityStreamsAttributedTo(attr)
+
+	// CC the public if we're not treating ActivityPub as "private".
+	if !data.GetFederationIsPrivate() {
+		public, _ := url.Parse(PUBLIC)
+		cc := streams.NewActivityStreamsCcProperty()
+		cc.AppendIRI(public)
+		note.SetActivityStreamsCc(cc)
+	}
+
+	return note
+}

activitypub/apmodels/actor.go

@@ -0,0 +1,263 @@
+package apmodels
+
+import (
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/models"
+	log "github.com/sirupsen/logrus"
+)
+
+// ActivityPubActor represents a single actor in handling ActivityPub activity.
+type ActivityPubActor struct {
+	// ActorIRI is the IRI of the remote actor.
+	ActorIri *url.URL
+	// FollowRequestIRI is the unique identifier of the follow request.
+	FollowRequestIri *url.URL
+	// Inbox is the inbox URL of the remote follower
+	Inbox *url.URL
+	// Name is the display name of the follower.
+	Name string
+	// Username is the account username of the remote actor.
+	Username string
+	// FullUsername is the username@account.tld representation of the user.
+	FullUsername string
+	// Image is the avatar image of the Actor.
+	Image *url.URL
+	// W3IDSecurityV1PublicKey is the public key of the actor.
+	W3IDSecurityV1PublicKey vocab.W3IDSecurityV1PublicKeyProperty
+	// DisabledAt is the time, if any, this follower was blocked/removed.
+	DisabledAt *time.Time
+}
+
+// DeleteRequest represents a request for delete.
+type DeleteRequest struct {
+	ActorIri string
+}
+
+// MakeActorFromPerson takes a full ActivityPub Person and returns our internal
+// representation of an actor.
+func MakeActorFromPerson(person vocab.ActivityStreamsPerson) ActivityPubActor {
+	apActor := ActivityPubActor{
+		ActorIri:                person.GetJSONLDId().Get(),
+		Inbox:                   person.GetActivityStreamsInbox().GetIRI(),
+		Name:                    person.GetActivityStreamsName().Begin().GetXMLSchemaString(),
+		Username:                person.GetActivityStreamsPreferredUsername().GetXMLSchemaString(),
+		FullUsername:            GetFullUsernameFromPerson(person),
+		W3IDSecurityV1PublicKey: person.GetW3IDSecurityV1PublicKey(),
+	}
+
+	if person.GetActivityStreamsIcon() != nil && person.GetActivityStreamsIcon().Len() > 0 {
+		apActor.Image = person.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().Begin().GetIRI()
+	}
+
+	return apActor
+}
+
+// MakeActorFromService takes a full ActivityPub Service and returns our internal
+// representation of an actor.
+func MakeActorFromService(service vocab.ActivityStreamsService) ActivityPubActor {
+	apActor := ActivityPubActor{
+		ActorIri:                service.GetJSONLDId().Get(),
+		Inbox:                   service.GetActivityStreamsInbox().GetIRI(),
+		Name:                    service.GetActivityStreamsName().Begin().GetXMLSchemaString(),
+		Username:                service.GetActivityStreamsPreferredUsername().GetXMLSchemaString(),
+		FullUsername:            GetFullUsernameFromService(service),
+		W3IDSecurityV1PublicKey: service.GetW3IDSecurityV1PublicKey(),
+	}
+
+	if service.GetActivityStreamsIcon() != nil && service.GetActivityStreamsIcon().Len() > 0 {
+		apActor.Image = service.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().Begin().GetIRI()
+	}
+
+	return apActor
+}
+
+// MakeActorPropertyWithID will return an actor property filled with the provided IRI.
+func MakeActorPropertyWithID(idIRI *url.URL) vocab.ActivityStreamsActorProperty {
+	actor := streams.NewActivityStreamsActorProperty()
+	actor.AppendIRI(idIRI)
+	return actor
+}
+
+// MakeServiceForAccount will create a new local actor service with the the provided username.
+func MakeServiceForAccount(accountName string) vocab.ActivityStreamsService {
+	actorIRI := MakeLocalIRIForAccount(accountName)
+
+	person := streams.NewActivityStreamsService()
+	nameProperty := streams.NewActivityStreamsNameProperty()
+	nameProperty.AppendXMLSchemaString(data.GetServerName())
+	person.SetActivityStreamsName(nameProperty)
+
+	preferredUsernameProperty := streams.NewActivityStreamsPreferredUsernameProperty()
+	preferredUsernameProperty.SetXMLSchemaString(accountName)
+	person.SetActivityStreamsPreferredUsername(preferredUsernameProperty)
+
+	inboxIRI := MakeLocalIRIForResource("/user/" + accountName + "/inbox")
+
+	inboxProp := streams.NewActivityStreamsInboxProperty()
+	inboxProp.SetIRI(inboxIRI)
+	person.SetActivityStreamsInbox(inboxProp)
+
+	needsFollowApprovalProperty := streams.NewActivityStreamsManuallyApprovesFollowersProperty()
+	needsFollowApprovalProperty.Set(data.GetFederationIsPrivate())
+	person.SetActivityStreamsManuallyApprovesFollowers(needsFollowApprovalProperty)
+
+	outboxIRI := MakeLocalIRIForResource("/user/" + accountName + "/outbox")
+
+	outboxProp := streams.NewActivityStreamsOutboxProperty()
+	outboxProp.SetIRI(outboxIRI)
+	person.SetActivityStreamsOutbox(outboxProp)
+
+	id := streams.NewJSONLDIdProperty()
+	id.Set(actorIRI)
+	person.SetJSONLDId(id)
+
+	publicKey := crypto.GetPublicKey(actorIRI)
+
+	publicKeyProp := streams.NewW3IDSecurityV1PublicKeyProperty()
+	publicKeyType := streams.NewW3IDSecurityV1PublicKey()
+
+	pubKeyIDProp := streams.NewJSONLDIdProperty()
+	pubKeyIDProp.Set(publicKey.ID)
+
+	publicKeyType.SetJSONLDId(pubKeyIDProp)
+
+	ownerProp := streams.NewW3IDSecurityV1OwnerProperty()
+	ownerProp.SetIRI(publicKey.Owner)
+	publicKeyType.SetW3IDSecurityV1Owner(ownerProp)
+
+	publicKeyPemProp := streams.NewW3IDSecurityV1PublicKeyPemProperty()
+	publicKeyPemProp.Set(publicKey.PublicKeyPem)
+	publicKeyType.SetW3IDSecurityV1PublicKeyPem(publicKeyPemProp)
+	publicKeyProp.AppendW3IDSecurityV1PublicKey(publicKeyType)
+	person.SetW3IDSecurityV1PublicKey(publicKeyProp)
+
+	if t, err := data.GetServerInitTime(); t != nil {
+		publishedDateProp := streams.NewActivityStreamsPublishedProperty()
+		publishedDateProp.Set(t.Time)
+		person.SetActivityStreamsPublished(publishedDateProp)
+	} else {
+		log.Errorln("unable to fetch server init time", err)
+	}
+
+	// Profile properties
+
+	// Avatar
+	userAvatarURLString := data.GetServerURL() + "/logo/external"
+	userAvatarURL, err := url.Parse(userAvatarURLString)
+	if err != nil {
+		log.Errorln("unable to parse user avatar url", userAvatarURLString, err)
+	}
+
+	image := streams.NewActivityStreamsImage()
+	imgProp := streams.NewActivityStreamsUrlProperty()
+	imgProp.AppendIRI(userAvatarURL)
+	image.SetActivityStreamsUrl(imgProp)
+	icon := streams.NewActivityStreamsIconProperty()
+	icon.AppendActivityStreamsImage(image)
+	person.SetActivityStreamsIcon(icon)
+
+	// Actor  URL
+	urlProperty := streams.NewActivityStreamsUrlProperty()
+	urlProperty.AppendIRI(actorIRI)
+	person.SetActivityStreamsUrl(urlProperty)
+
+	// Profile header
+	headerImage := streams.NewActivityStreamsImage()
+	headerImgPropURL := streams.NewActivityStreamsUrlProperty()
+	headerImgPropURL.AppendIRI(userAvatarURL)
+	headerImage.SetActivityStreamsUrl(headerImgPropURL)
+	headerImageProp := streams.NewActivityStreamsImageProperty()
+	headerImageProp.AppendActivityStreamsImage(headerImage)
+	person.SetActivityStreamsImage(headerImageProp)
+
+	// Profile bio
+	summaryProperty := streams.NewActivityStreamsSummaryProperty()
+	summaryProperty.AppendXMLSchemaString(data.GetServerSummary())
+	person.SetActivityStreamsSummary(summaryProperty)
+
+	// Links
+	for _, link := range data.GetSocialHandles() {
+		addMetadataLinkToProfile(person, link.Platform, link.URL)
+	}
+
+	// Discoverable
+	discoverableProperty := streams.NewTootDiscoverableProperty()
+	discoverableProperty.Set(true)
+	person.SetTootDiscoverable(discoverableProperty)
+
+	// Followers
+	followersProperty := streams.NewActivityStreamsFollowersProperty()
+	followersURL := *actorIRI
+	followersURL.Path = actorIRI.Path + "/followers"
+	followersProperty.SetIRI(&followersURL)
+	person.SetActivityStreamsFollowers(followersProperty)
+
+	// Tags
+	tagProp := streams.NewActivityStreamsTagProperty()
+	for _, tagString := range data.GetServerMetadataTags() {
+		hashtag := MakeHashtag(tagString)
+		tagProp.AppendTootHashtag(hashtag)
+	}
+
+	person.SetActivityStreamsTag(tagProp)
+
+	// Work around an issue where a single attachment will not serialize
+	// as an array, so add another item to the mix.
+	if len(data.GetSocialHandles()) == 1 {
+		addMetadataLinkToProfile(person, "Owncast", "https://owncast.online")
+	}
+
+	return person
+}
+
+// GetFullUsernameFromPerson will return the user@host.tld formatted user given a person object.
+func GetFullUsernameFromPerson(person vocab.ActivityStreamsPerson) string {
+	hostname := person.GetJSONLDId().GetIRI().Hostname()
+	username := person.GetActivityStreamsPreferredUsername().GetXMLSchemaString()
+	fullUsername := fmt.Sprintf("%s@%s", username, hostname)
+
+	return fullUsername
+}
+
+// GetFullUsernameFromService will return the user@host.tld formatted user given a service object.
+func GetFullUsernameFromService(person vocab.ActivityStreamsService) string {
+	hostname := person.GetJSONLDId().GetIRI().Hostname()
+	username := person.GetActivityStreamsPreferredUsername().GetXMLSchemaString()
+	fullUsername := fmt.Sprintf("%s@%s", username, hostname)
+
+	return fullUsername
+}
+
+func addMetadataLinkToProfile(profile vocab.ActivityStreamsService, name string, url string) {
+	attachments := profile.GetActivityStreamsAttachment()
+	if attachments == nil {
+		attachments = streams.NewActivityStreamsAttachmentProperty()
+	}
+
+	displayName := name
+	socialHandle := models.GetSocialHandle(name)
+	if socialHandle != nil {
+		displayName = socialHandle.Platform
+	}
+
+	linkValue := fmt.Sprintf("<a href=\"%s\" rel=\"me nofollow noopener noreferrer\" target=\"_blank\">%s</a>", url, url)
+
+	attachment := streams.NewActivityStreamsObject()
+	attachmentProp := streams.NewJSONLDTypeProperty()
+	attachmentProp.AppendXMLSchemaString("PropertyValue")
+	attachment.SetJSONLDType(attachmentProp)
+	attachmentName := streams.NewActivityStreamsNameProperty()
+	attachmentName.AppendXMLSchemaString(displayName)
+	attachment.SetActivityStreamsName(attachmentName)
+	attachment.GetUnknownProperties()["value"] = linkValue
+
+	attachments.AppendActivityStreamsObject(attachment)
+	profile.SetActivityStreamsAttachment(attachments)
+}

activitypub/apmodels/actor_test.go

@@ -0,0 +1,168 @@
+package apmodels
+
+import (
+	"io/ioutil"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/core/data"
+)
+
+func makeFakeService() vocab.ActivityStreamsService {
+	iri, _ := url.Parse("https://fake.fediverse.server/user/mrfoo")
+	name := "Mr Foo"
+	username := "foodawg"
+	inbox, _ := url.Parse("https://fake.fediverse.server/user/mrfoo/inbox")
+	userAvatarURL, _ := url.Parse("https://fake.fediverse.server/user/mrfoo/avatar.png")
+
+	service := streams.NewActivityStreamsService()
+
+	id := streams.NewJSONLDIdProperty()
+	id.Set(iri)
+	service.SetJSONLDId(id)
+
+	nameProperty := streams.NewActivityStreamsNameProperty()
+	nameProperty.AppendXMLSchemaString(name)
+	service.SetActivityStreamsName(nameProperty)
+
+	preferredUsernameProperty := streams.NewActivityStreamsPreferredUsernameProperty()
+	preferredUsernameProperty.SetXMLSchemaString(username)
+	service.SetActivityStreamsPreferredUsername(preferredUsernameProperty)
+
+	inboxProp := streams.NewActivityStreamsInboxProperty()
+	inboxProp.SetIRI(inbox)
+	service.SetActivityStreamsInbox(inboxProp)
+
+	image := streams.NewActivityStreamsImage()
+	imgProp := streams.NewActivityStreamsUrlProperty()
+	imgProp.AppendIRI(userAvatarURL)
+	image.SetActivityStreamsUrl(imgProp)
+	icon := streams.NewActivityStreamsIconProperty()
+	icon.AppendActivityStreamsImage(image)
+	service.SetActivityStreamsIcon(icon)
+
+	return service
+}
+
+func TestMain(m *testing.M) {
+	dbFile, err := ioutil.TempFile(os.TempDir(), "owncast-test-db.db")
+	if err != nil {
+		panic(err)
+	}
+
+	data.SetupPersistence(dbFile.Name())
+	data.SetServerURL("https://my.cool.site.biz")
+
+	m.Run()
+}
+
+func TestMakeActorFromService(t *testing.T) {
+	service := makeFakeService()
+	actor := MakeActorFromService(service)
+
+	if actor.ActorIri != service.GetJSONLDId().GetIRI() {
+		t.Errorf("actor.ID = %v, want %v", actor.ActorIri, service.GetJSONLDId().GetIRI())
+	}
+
+	if actor.Name != service.GetActivityStreamsName().At(0).GetXMLSchemaString() {
+		t.Errorf("actor.Name = %v, want %v", actor.Name, service.GetActivityStreamsName().At(0).GetXMLSchemaString())
+	}
+
+	if actor.Username != service.GetActivityStreamsPreferredUsername().GetXMLSchemaString() {
+		t.Errorf("actor.Username = %v, want %v", actor.Username, service.GetActivityStreamsPreferredUsername().GetXMLSchemaString())
+	}
+
+	if actor.Inbox != service.GetActivityStreamsInbox().GetIRI() {
+		t.Errorf("actor.Inbox = %v, want %v", actor.Inbox.String(), service.GetActivityStreamsInbox().GetIRI())
+	}
+
+	if actor.Image != service.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().At(0).GetIRI() {
+		t.Errorf("actor.Image = %v, want %v", actor.Image, service.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().At(0).GetIRI())
+	}
+}
+
+func TestMakeActorPropertyWithID(t *testing.T) {
+	iri, _ := url.Parse("https://fake.fediverse.server/user/mrfoo")
+	actor := MakeActorPropertyWithID(iri)
+
+	if actor.Begin().GetIRI() != iri {
+		t.Errorf("actor.IRI = %v, want %v", actor.Begin().GetIRI(), iri)
+	}
+}
+
+func TestGetFullUsernameFromPerson(t *testing.T) {
+	expected := "foodawg@fake.fediverse.server"
+	person := makeFakeService()
+	username := GetFullUsernameFromService(person)
+
+	if username != expected {
+		t.Errorf("actor.Username = %v, want %v", username, expected)
+	}
+}
+
+func TestAddMetadataLinkToProfile(t *testing.T) {
+	person := makeFakeService()
+	addMetadataLinkToProfile(person, "my site", "https://my.cool.site.biz")
+	attchment := person.GetActivityStreamsAttachment().At(0)
+
+	nameValue := attchment.GetActivityStreamsObject().GetActivityStreamsName().At(0).GetXMLSchemaString()
+	expected := "my site"
+	if nameValue != expected {
+		t.Errorf("attachment name = %v, want %v", nameValue, expected)
+	}
+
+	propertyValue := attchment.GetActivityStreamsObject().GetUnknownProperties()["value"]
+	expected = `<a href="https://my.cool.site.biz" rel="me nofollow noopener noreferrer" target="_blank">https://my.cool.site.biz</a>`
+	if propertyValue != expected {
+		t.Errorf("attachment value = %v, want %v", propertyValue, expected)
+	}
+}
+
+func TestMakeServiceForAccount(t *testing.T) {
+	person := MakeServiceForAccount("accountname")
+	expectedIRI := "https://my.cool.site.biz/federation/user/accountname"
+	if person.GetJSONLDId().Get().String() != expectedIRI {
+		t.Errorf("actor.IRI = %v, want %v", person.GetJSONLDId().Get().String(), expectedIRI)
+	}
+
+	if person.GetActivityStreamsPreferredUsername().GetXMLSchemaString() != "accountname" {
+		t.Errorf("actor.PreferredUsername = %v, want %v", person.GetActivityStreamsPreferredUsername().GetXMLSchemaString(), expectedIRI)
+	}
+
+	expectedInbox := "https://my.cool.site.biz/federation/user/accountname/inbox"
+	if person.GetActivityStreamsInbox().GetIRI().String() != expectedInbox {
+		t.Errorf("actor.Inbox = %v, want %v", person.GetActivityStreamsInbox().GetIRI().String(), expectedInbox)
+	}
+
+	expectedOutbox := "https://my.cool.site.biz/federation/user/accountname/outbox"
+	if person.GetActivityStreamsOutbox().GetIRI().String() != expectedOutbox {
+		t.Errorf("actor.Outbox = %v, want %v", person.GetActivityStreamsOutbox().GetIRI().String(), expectedOutbox)
+	}
+
+	expectedFollowers := "https://my.cool.site.biz/federation/user/accountname/followers"
+	if person.GetActivityStreamsFollowers().GetIRI().String() != expectedFollowers {
+		t.Errorf("actor.Followers = %v, want %v", person.GetActivityStreamsFollowers().GetIRI().String(), expectedFollowers)
+	}
+
+	expectedName := "Owncast"
+	if person.GetActivityStreamsName().Begin().GetXMLSchemaString() != expectedName {
+		t.Errorf("actor.Name = %v, want %v", person.GetActivityStreamsName().Begin().GetXMLSchemaString(), expectedName)
+	}
+
+	expectedAvatar := "https://my.cool.site.biz/logo/external"
+	if person.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().Begin().GetIRI().String() != expectedAvatar {
+		t.Errorf("actor.Avatar = %v, want %v", person.GetActivityStreamsIcon().At(0).GetActivityStreamsImage().GetActivityStreamsUrl().Begin().GetIRI().String(), expectedAvatar)
+	}
+
+	expectedSummary := "Welcome to your new Owncast server! This description can be changed in the admin. Visit https://owncast.online/docs/configuration/ to learn more."
+	if person.GetActivityStreamsSummary().At(0).GetXMLSchemaString() != expectedSummary {
+		t.Errorf("actor.Summary = %v, want %v", person.GetActivityStreamsSummary().At(0).GetXMLSchemaString(), expectedSummary)
+	}
+
+	if person.GetActivityStreamsUrl().At(0).GetIRI().String() != expectedIRI {
+		t.Errorf("actor.URL = %v, want %v", person.GetActivityStreamsUrl().At(0).GetIRI().String(), expectedIRI)
+	}
+}

activitypub/apmodels/hashtag.go

@@ -0,0 +1,24 @@
+package apmodels
+
+import (
+	"net/url"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+)
+
+// MakeHashtag will create and return a mastodon toot hashtag object with the provided name.
+func MakeHashtag(name string) vocab.TootHashtag {
+	u, _ := url.Parse("https://directory.owncast.online/tags/" + name)
+
+	hashtag := streams.NewTootHashtag()
+	hashtagName := streams.NewActivityStreamsNameProperty()
+	hashtagName.AppendXMLSchemaString("#" + name)
+	hashtag.SetActivityStreamsName(hashtagName)
+
+	hashtagHref := streams.NewActivityStreamsHrefProperty()
+	hashtagHref.Set(u)
+	hashtag.SetActivityStreamsHref(hashtagHref)
+
+	return hashtag
+}

activitypub/apmodels/inboxRequest.go

@@ -0,0 +1,10 @@
+package apmodels
+
+import "net/http"
+
+// InboxRequest represents an inbound request to the ActivityPub inbox.
+type InboxRequest struct {
+	Request         *http.Request
+	ForLocalAccount string
+	Body            []byte
+}

activitypub/apmodels/message.go

@@ -0,0 +1,50 @@
+package apmodels
+
+import (
+	"net/url"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+)
+
+// CreateCreateActivity will create a new Create Activity model with the provided ID and IRI.
+func CreateCreateActivity(id string, localAccountIRI *url.URL) vocab.ActivityStreamsCreate {
+	objectID := MakeLocalIRIForResource(id)
+	message := MakeCreateActivity(objectID)
+
+	actorProp := streams.NewActivityStreamsActorProperty()
+	actorProp.AppendIRI(localAccountIRI)
+	message.SetActivityStreamsActor(actorProp)
+
+	return message
+}
+
+// AddImageAttachmentToNote will add the provided image URL to the provided note object.
+func AddImageAttachmentToNote(note vocab.ActivityStreamsNote, image string) {
+	imageURL, err := url.Parse(image)
+	if err != nil {
+		return
+	}
+
+	attachments := note.GetActivityStreamsAttachment()
+	if attachments == nil {
+		attachments = streams.NewActivityStreamsAttachmentProperty()
+	}
+
+	urlProp := streams.NewActivityStreamsUrlProperty()
+	urlProp.AppendIRI(imageURL)
+
+	apImage := streams.NewActivityStreamsImage()
+	apImage.SetActivityStreamsUrl(urlProp)
+
+	imageProp := streams.NewActivityStreamsImageProperty()
+	imageProp.AppendActivityStreamsImage(apImage)
+
+	imageDescription := streams.NewActivityStreamsContentProperty()
+	imageDescription.AppendXMLSchemaString("Live stream preview")
+	apImage.SetActivityStreamsContent(imageDescription)
+
+	attachments.AppendActivityStreamsImage(apImage)
+
+	note.SetActivityStreamsAttachment(attachments)
+}

activitypub/apmodels/utils.go

@@ -0,0 +1,62 @@
+package apmodels
+
+import (
+	"encoding/json"
+	"net/url"
+	"path"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/core/data"
+	log "github.com/sirupsen/logrus"
+)
+
+// MakeRemoteIRIForResource will create an IRI for a remote location.
+func MakeRemoteIRIForResource(resourcePath string, host string) (*url.URL, error) {
+	generatedURL := "https://" + host
+	u, err := url.Parse(generatedURL)
+	if err != nil {
+		return nil, err
+	}
+
+	u.Path = path.Join(u.Path, "federation", resourcePath)
+
+	return u, nil
+}
+
+// MakeLocalIRIForResource will create an IRI for the local server.
+func MakeLocalIRIForResource(resourcePath string) *url.URL {
+	host := data.GetServerURL()
+	u, err := url.Parse(host)
+	if err != nil {
+		log.Errorln("unable to parse local IRI url", host, err)
+		return nil
+	}
+
+	u.Path = path.Join(u.Path, "federation", resourcePath)
+
+	return u
+}
+
+// MakeLocalIRIForAccount will return a full IRI for the local server account username.
+func MakeLocalIRIForAccount(account string) *url.URL {
+	host := data.GetServerURL()
+	u, err := url.Parse(host)
+	if err != nil {
+		log.Errorln("unable to parse local IRI account server url", err)
+		return nil
+	}
+
+	u.Path = path.Join(u.Path, "federation", "user", account)
+
+	return u
+}
+
+// Serialize will serialize an ActivityPub object to a byte slice.
+func Serialize(obj vocab.Type) ([]byte, error) {
+	var jsonmap map[string]interface{}
+	jsonmap, _ = streams.Serialize(obj)
+	b, err := json.Marshal(jsonmap)
+
+	return b, err
+}

activitypub/apmodels/webfinger.go

@@ -0,0 +1,43 @@
+package apmodels
+
+import (
+	"fmt"
+)
+
+// WebfingerResponse represents a Webfinger response.
+type WebfingerResponse struct {
+	Aliases []string `json:"aliases"`
+	Subject string   `json:"subject"`
+	Links   []Link   `json:"links"`
+}
+
+// Link represents a Webfinger response Link entity.
+type Link struct {
+	Rel  string `json:"rel"`
+	Type string `json:"type"`
+	Href string `json:"href"`
+}
+
+// MakeWebfingerResponse will create a new Webfinger response.
+func MakeWebfingerResponse(account string, inbox string, host string) WebfingerResponse {
+	accountIRI := MakeLocalIRIForAccount(account)
+
+	return WebfingerResponse{
+		Subject: fmt.Sprintf("acct:%s@%s", account, host),
+		Aliases: []string{
+			accountIRI.String(),
+		},
+		Links: []Link{
+			{
+				Rel:  "self",
+				Type: "application/activity+json",
+				Href: accountIRI.String(),
+			},
+			{
+				Rel:  "http://webfinger.net/rel/profile-page",
+				Type: "text/html",
+				Href: accountIRI.String(),
+			},
+		},
+	}
+}

activitypub/controllers/actors.go

@@ -0,0 +1,58 @@
+package controllers
+
+import (
+	"net/http"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/core/data"
+)
+
+// ActorHandler handles requests for a single actor.
+func ActorHandler(w http.ResponseWriter, r *http.Request) {
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	pathComponents := strings.Split(r.URL.Path, "/")
+	accountName := pathComponents[3]
+
+	if _, valid := data.GetFederatedInboxMap()[accountName]; !valid {
+		// User is not valid
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	// If this request is for an actor's inbox then pass
+	// the request to the inbox controller.
+	if len(pathComponents) == 5 && pathComponents[4] == "inbox" {
+		InboxHandler(w, r)
+		return
+	} else if len(pathComponents) == 5 && pathComponents[4] == "outbox" {
+		OutboxHandler(w, r)
+		return
+	} else if len(pathComponents) == 5 && pathComponents[4] == "followers" {
+		// followers list
+		FollowersHandler(w, r)
+		return
+	} else if len(pathComponents) == 5 && pathComponents[4] == "following" {
+		// following list (none)
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	actorIRI := apmodels.MakeLocalIRIForAccount(accountName)
+	publicKey := crypto.GetPublicKey(actorIRI)
+	person := apmodels.MakeServiceForAccount(accountName)
+
+	if err := requests.WriteStreamResponse(person, w, publicKey); err != nil {
+		log.Errorln("unable to write stream response for actor handler", err)
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+}

activitypub/controllers/followers.go

@@ -0,0 +1,166 @@
+package controllers
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/pkg/errors"
+	log "github.com/sirupsen/logrus"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/core/data"
+)
+
+const (
+	followersPageSize = 50
+)
+
+// FollowersHandler will return the list of remote followers on the Fediverse.
+func FollowersHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "GET" {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	var response interface{}
+	var err error
+	if r.URL.Query().Get("page") != "" {
+		response, err = getFollowersPage(r.URL.Query().Get("page"), r)
+	} else {
+		response, err = getInitialFollowersRequest(r)
+	}
+
+	if response == nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	if err != nil {
+		_, _ = w.Write([]byte(err.Error()))
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	pathComponents := strings.Split(r.URL.Path, "/")
+	accountName := pathComponents[3]
+	actorIRI := apmodels.MakeLocalIRIForAccount(accountName)
+	publicKey := crypto.GetPublicKey(actorIRI)
+
+	if err := requests.WriteStreamResponse(response.(vocab.Type), w, publicKey); err != nil {
+		log.Errorln("unable to write stream response for followers handler", err)
+	}
+}
+
+func getInitialFollowersRequest(r *http.Request) (vocab.ActivityStreamsOrderedCollection, error) {
+	followerCount, _ := persistence.GetFollowerCount()
+	collection := streams.NewActivityStreamsOrderedCollection()
+	idProperty := streams.NewJSONLDIdProperty()
+	id, err := createPageURL(r, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create followers page property")
+	}
+	idProperty.SetIRI(id)
+	collection.SetJSONLDId(idProperty)
+
+	totalItemsProperty := streams.NewActivityStreamsTotalItemsProperty()
+	totalItemsProperty.Set(int(followerCount))
+	collection.SetActivityStreamsTotalItems(totalItemsProperty)
+
+	first := streams.NewActivityStreamsFirstProperty()
+	page := "1"
+	firstIRI, err := createPageURL(r, &page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create first page property")
+	}
+
+	first.SetIRI(firstIRI)
+	collection.SetActivityStreamsFirst(first)
+
+	return collection, nil
+}
+
+func getFollowersPage(page string, r *http.Request) (vocab.ActivityStreamsOrderedCollectionPage, error) {
+	pageInt, err := strconv.Atoi(page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to parse page number")
+	}
+
+	followerCount, err := persistence.GetFollowerCount()
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to get follower count")
+	}
+
+	followers, err := persistence.GetFederationFollowers(followersPageSize, (pageInt-1)*followersPageSize)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to get federation followers")
+	}
+
+	collectionPage := streams.NewActivityStreamsOrderedCollectionPage()
+	idProperty := streams.NewJSONLDIdProperty()
+	id, err := createPageURL(r, &page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create followers page ID")
+	}
+	idProperty.SetIRI(id)
+	collectionPage.SetJSONLDId(idProperty)
+
+	orderedItems := streams.NewActivityStreamsOrderedItemsProperty()
+
+	for _, follower := range followers {
+		u, _ := url.Parse(follower.ActorIRI)
+		orderedItems.AppendIRI(u)
+	}
+	collectionPage.SetActivityStreamsOrderedItems(orderedItems)
+
+	partOf := streams.NewActivityStreamsPartOfProperty()
+	partOfIRI, err := createPageURL(r, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create partOf property for followers page")
+	}
+
+	partOf.SetIRI(partOfIRI)
+	collectionPage.SetActivityStreamsPartOf(partOf)
+
+	if pageInt*followersPageSize < int(followerCount) {
+		next := streams.NewActivityStreamsNextProperty()
+		nextPage := fmt.Sprintf("%d", pageInt+1)
+		nextIRI, err := createPageURL(r, &nextPage)
+		if err != nil {
+			return nil, errors.Wrap(err, "unable to create next page property")
+		}
+
+		next.SetIRI(nextIRI)
+		collectionPage.SetActivityStreamsNext(next)
+	}
+
+	return collectionPage, nil
+}
+
+func createPageURL(r *http.Request, page *string) (*url.URL, error) {
+	domain := data.GetServerURL()
+	if domain == "" {
+		return nil, errors.New("unable to get server URL")
+	}
+
+	pageURL, err := url.Parse(domain)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to parse server URL")
+	}
+
+	if page != nil {
+		query := pageURL.Query()
+		query.Add("page", *page)
+		pageURL.RawQuery = query.Encode()
+	}
+	pageURL.Path = r.URL.Path
+
+	return pageURL, nil
+}

activitypub/controllers/inbox.go

@@ -0,0 +1,56 @@
+package controllers
+
+import (
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/inbox"
+	"github.com/owncast/owncast/core/data"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// InboxHandler handles inbound federated requests.
+func InboxHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method == http.MethodPost {
+		acceptInboxRequest(w, r)
+	} else {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+	}
+}
+
+func acceptInboxRequest(w http.ResponseWriter, r *http.Request) {
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	urlPathComponents := strings.Split(r.URL.Path, "/")
+	var forLocalAccount string
+	if len(urlPathComponents) == 5 {
+		forLocalAccount = urlPathComponents[3]
+	} else {
+		log.Errorln("Unable to determine username from url path")
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	// The account this request is for must match the account name we have set
+	// for federation.
+	if forLocalAccount != data.GetFederationUsername() {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	data, err := io.ReadAll(r.Body)
+	if err != nil {
+		log.Errorln("Unable to read inbox request payload", err)
+		return
+	}
+
+	inboxRequest := apmodels.InboxRequest{Request: r, ForLocalAccount: forLocalAccount, Body: data}
+	inbox.AddToQueue(inboxRequest)
+	w.WriteHeader(http.StatusAccepted)
+}

activitypub/controllers/nodeinfo.go

@@ -0,0 +1,285 @@
+package controllers
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/config"
+	"github.com/owncast/owncast/core/data"
+	log "github.com/sirupsen/logrus"
+)
+
+// NodeInfoController returns the V1 node info response.
+func NodeInfoController(w http.ResponseWriter, r *http.Request) {
+	type links struct {
+		Rel  string `json:"rel"`
+		Href string `json:"href"`
+	}
+
+	type response struct {
+		Links []links `json:"links"`
+	}
+
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	serverURL := data.GetServerURL()
+	if serverURL == "" {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	v2, err := url.Parse(serverURL)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	v2.Path = "nodeinfo/2.0"
+
+	res := response{
+		Links: []links{
+			{
+				Rel:  "http://nodeinfo.diaspora.software/ns/schema/2.0",
+				Href: v2.String(),
+			},
+		},
+	}
+	if err := writeResponse(res, w); err != nil {
+		log.Errorln(err)
+	}
+}
+
+// NodeInfoV2Controller returns the V2 node info response.
+func NodeInfoV2Controller(w http.ResponseWriter, r *http.Request) {
+	type software struct {
+		Name    string `json:"name"`
+		Version string `json:"version"`
+	}
+	type users struct {
+		Total          int `json:"total"`
+		ActiveMonth    int `json:"activeMonth"`
+		ActiveHalfyear int `json:"activeHalfyear"`
+	}
+	type usage struct {
+		Users      users `json:"users"`
+		LocalPosts int   `json:"localPosts"`
+	}
+	type response struct {
+		Version           string   `json:"version"`
+		Software          software `json:"software"`
+		Protocols         []string `json:"protocols"`
+		Usage             usage    `json:"usage"`
+		OpenRegistrations bool     `json:"openRegistrations"`
+	}
+
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	localPostCount, _ := persistence.GetLocalPostCount()
+
+	res := response{
+		Version: "2.0",
+		Software: software{
+			Name:    "Owncast",
+			Version: config.VersionNumber,
+		},
+		Usage: usage{
+			Users: users{
+				Total:          1,
+				ActiveMonth:    1,
+				ActiveHalfyear: 1,
+			},
+			LocalPosts: int(localPostCount),
+		},
+		OpenRegistrations: false,
+		Protocols:         []string{"activitypub"},
+	}
+
+	if err := writeResponse(res, w); err != nil {
+		log.Errorln(err)
+	}
+}
+
+// XNodeInfo2Controller returns the x-nodeinfo2.
+func XNodeInfo2Controller(w http.ResponseWriter, r *http.Request) {
+	type Organization struct {
+		Name    string `json:"name"`
+		Contact string `json:"contact"`
+	}
+	type Server struct {
+		BaseURL  string `json:"baseUrl"`
+		Version  string `json:"version"`
+		Name     string `json:"name"`
+		Software string `json:"software"`
+	}
+	type Services struct {
+		Outbound []string `json:"outbound"`
+		Inbound  []string `json:"inbound"`
+	}
+	type Users struct {
+		ActiveWeek     int `json:"activeWeek"`
+		Total          int `json:"total"`
+		ActiveMonth    int `json:"activeMonth"`
+		ActiveHalfyear int `json:"activeHalfyear"`
+	}
+	type Usage struct {
+		Users         Users `json:"users"`
+		LocalPosts    int   `json:"localPosts"`
+		LocalComments int   `json:"localComments"`
+	}
+	type response struct {
+		Organization      Organization `json:"organization"`
+		Server            Server       `json:"server"`
+		Services          Services     `json:"services"`
+		Protocols         []string     `json:"protocols"`
+		Version           string       `json:"version"`
+		OpenRegistrations bool         `json:"openRegistrations"`
+		Usage             Usage        `json:"usage"`
+	}
+
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	serverURL := data.GetServerURL()
+	if serverURL == "" {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	localPostCount, _ := persistence.GetLocalPostCount()
+
+	res := &response{
+		Organization: Organization{
+			Name:    data.GetServerName(),
+			Contact: serverURL,
+		},
+		Server: Server{
+			BaseURL:  serverURL,
+			Version:  config.VersionNumber,
+			Name:     "owncast",
+			Software: "owncast",
+		},
+		Services: Services{
+			Inbound:  []string{"activitypub"},
+			Outbound: []string{"activitypub"},
+		},
+		Protocols: []string{"activitypub"},
+		Version:   config.VersionNumber,
+		Usage: Usage{
+			Users: Users{
+				ActiveWeek:     1,
+				Total:          1,
+				ActiveMonth:    1,
+				ActiveHalfyear: 1,
+			},
+
+			LocalPosts:    int(localPostCount),
+			LocalComments: 0,
+		},
+	}
+
+	if err := writeResponse(res, w); err != nil {
+		log.Errorln(err)
+	}
+}
+
+// InstanceV1Controller returns the v1 instance details.
+func InstanceV1Controller(w http.ResponseWriter, r *http.Request) {
+	type Stats struct {
+		UserCount   int `json:"user_count"`
+		StatusCount int `json:"status_count"`
+		DomainCount int `json:"domain_count"`
+	}
+	type response struct {
+		URI              string   `json:"uri"`
+		Title            string   `json:"title"`
+		ShortDescription string   `json:"short_description"`
+		Description      string   `json:"description"`
+		Version          string   `json:"version"`
+		Stats            Stats    `json:"stats"`
+		Thumbnail        string   `json:"thumbnail"`
+		Languages        []string `json:"languages"`
+		Registrations    bool     `json:"registrations"`
+		ApprovalRequired bool     `json:"approval_required"`
+		InvitesEnabled   bool     `json:"invites_enabled"`
+	}
+
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	serverURL := data.GetServerURL()
+	if serverURL == "" {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	thumbnail, err := url.Parse(serverURL)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	thumbnail.Path = "/logo/external"
+	localPostCount, _ := persistence.GetLocalPostCount()
+
+	res := response{
+		URI:              serverURL,
+		Title:            data.GetServerName(),
+		ShortDescription: data.GetServerSummary(),
+		Description:      data.GetServerSummary(),
+		Version:          config.GetReleaseString(),
+		Stats: Stats{
+			UserCount:   1,
+			StatusCount: int(localPostCount),
+			DomainCount: 0,
+		},
+		Thumbnail:        thumbnail.String(),
+		Registrations:    false,
+		ApprovalRequired: false,
+		InvitesEnabled:   false,
+	}
+
+	if err := writeResponse(res, w); err != nil {
+		log.Errorln(err)
+	}
+}
+
+func writeResponse(payload interface{}, w http.ResponseWriter) error {
+	accountName := data.GetDefaultFederationUsername()
+	actorIRI := apmodels.MakeLocalIRIForAccount(accountName)
+	publicKey := crypto.GetPublicKey(actorIRI)
+
+	return requests.WritePayloadResponse(payload, w, publicKey)
+}
+
+// HostMetaController points to webfinger.
+func HostMetaController(w http.ResponseWriter, r *http.Request) {
+	serverURL := data.GetServerURL()
+	if serverURL == "" {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	res := fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
+	<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
+		<Link rel="lrdd" type="application/json" template="%s/.well-known/webfinger?resource={uri}"/>
+	</XRD>`, serverURL)
+
+	if _, err := w.Write([]byte(res)); err != nil {
+		log.Errorln(err)
+	}
+}

activitypub/controllers/object.go

@@ -0,0 +1,42 @@
+package controllers
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/core/data"
+	log "github.com/sirupsen/logrus"
+)
+
+// ObjectHandler handles requests for a single federated ActivityPub object.
+func ObjectHandler(w http.ResponseWriter, r *http.Request) {
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	// If private federation mode is enabled do not allow access to objects.
+	if data.GetFederationIsPrivate() {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	iri := strings.Join([]string{strings.TrimSuffix(data.GetServerURL(), "/"), r.URL.Path}, "")
+	object, _, _, err := persistence.GetObjectByIRI(iri)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	accountName := data.GetDefaultFederationUsername()
+	actorIRI := apmodels.MakeLocalIRIForAccount(accountName)
+	publicKey := crypto.GetPublicKey(actorIRI)
+
+	if err := requests.WriteResponse([]byte(object), w, publicKey); err != nil {
+		log.Errorln(err)
+	}
+}

activitypub/controllers/outbox.go

@@ -0,0 +1,156 @@
+package controllers
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/pkg/errors"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	outboxPageSize = 50
+)
+
+// OutboxHandler will handle requests for the local ActivityPub outbox.
+func OutboxHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	var response interface{}
+	var err error
+	if r.URL.Query().Get("page") != "" {
+		response, err = getOutboxPage(r.URL.Query().Get("page"), r)
+	} else {
+		response, err = getInitialOutboxHandler(r)
+	}
+
+	if response == nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	if err != nil {
+		_, _ = w.Write([]byte(err.Error()))
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	pathComponents := strings.Split(r.URL.Path, "/")
+	accountName := pathComponents[3]
+	actorIRI := apmodels.MakeLocalIRIForAccount(accountName)
+	publicKey := crypto.GetPublicKey(actorIRI)
+
+	if err := requests.WriteStreamResponse(response.(vocab.Type), w, publicKey); err != nil {
+		log.Errorln("unable to write stream response for outbox handler", err)
+	}
+}
+
+// ActorObjectHandler will handle the request for a single ActivityPub object.
+func ActorObjectHandler(w http.ResponseWriter, r *http.Request) {
+	object, _, _, err := persistence.GetObjectByIRI(r.URL.Path)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		return
+		// controllers.WriteSimpleResponse(w, false, err.Error())
+	}
+
+	if _, err := w.Write([]byte(object)); err != nil {
+		log.Errorln(err)
+	}
+}
+
+func getInitialOutboxHandler(r *http.Request) (vocab.ActivityStreamsOrderedCollection, error) {
+	collection := streams.NewActivityStreamsOrderedCollection()
+
+	idProperty := streams.NewJSONLDIdProperty()
+	id, err := createPageURL(r, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create followers page property")
+	}
+	idProperty.SetIRI(id)
+	collection.SetJSONLDId(idProperty)
+
+	totalPosts, err := persistence.GetOutboxPostCount()
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to get outbox post count")
+	}
+	totalItemsProperty := streams.NewActivityStreamsTotalItemsProperty()
+	totalItemsProperty.Set(int(totalPosts))
+	collection.SetActivityStreamsTotalItems(totalItemsProperty)
+
+	first := streams.NewActivityStreamsFirstProperty()
+	page := "1"
+	firstIRI, err := createPageURL(r, &page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create first page property")
+	}
+
+	first.SetIRI(firstIRI)
+	collection.SetActivityStreamsFirst(first)
+
+	return collection, nil
+}
+
+func getOutboxPage(page string, r *http.Request) (vocab.ActivityStreamsOrderedCollectionPage, error) {
+	pageInt, err := strconv.Atoi(page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to parse page number")
+	}
+
+	postCount, err := persistence.GetOutboxPostCount()
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to get outbox post count")
+	}
+
+	collectionPage := streams.NewActivityStreamsOrderedCollectionPage()
+	idProperty := streams.NewJSONLDIdProperty()
+	id, err := createPageURL(r, &page)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create followers page ID")
+	}
+	idProperty.SetIRI(id)
+	collectionPage.SetJSONLDId(idProperty)
+
+	orderedItems := streams.NewActivityStreamsOrderedItemsProperty()
+
+	outboxItems, err := persistence.GetOutbox(outboxPageSize, (pageInt-1)*outboxPageSize)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to get federation followers")
+	}
+	orderedItems.AppendActivityStreamsOrderedCollection(outboxItems)
+	collectionPage.SetActivityStreamsOrderedItems(orderedItems)
+
+	partOf := streams.NewActivityStreamsPartOfProperty()
+	partOfIRI, err := createPageURL(r, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "unable to create partOf property for outbox page")
+	}
+
+	partOf.SetIRI(partOfIRI)
+	collectionPage.SetActivityStreamsPartOf(partOf)
+
+	if pageInt*followersPageSize < int(postCount) {
+		next := streams.NewActivityStreamsNextProperty()
+		nextPage := fmt.Sprintf("%d", pageInt+1)
+		nextIRI, err := createPageURL(r, &nextPage)
+		if err != nil {
+			return nil, errors.Wrap(err, "unable to create next page property")
+		}
+
+		next.SetIRI(nextIRI)
+		collectionPage.SetActivityStreamsNext(next)
+	}
+
+	return collectionPage, nil
+}

activitypub/controllers/webfinger.go

@@ -0,0 +1,60 @@
+package controllers
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/utils"
+	log "github.com/sirupsen/logrus"
+)
+
+// WebfingerHandler will handle webfinger lookup requests.
+func WebfingerHandler(w http.ResponseWriter, r *http.Request) {
+	if !data.GetFederationEnabled() {
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
+	}
+
+	resource := r.URL.Query().Get("resource")
+	resourceComponents := strings.Split(resource, ":")
+	account := resourceComponents[1]
+
+	userComponents := strings.Split(account, "@")
+	if len(userComponents) < 2 {
+		return
+	}
+	host := userComponents[1]
+	user := userComponents[0]
+
+	if _, valid := data.GetFederatedInboxMap()[user]; !valid {
+		// User is not valid
+		w.WriteHeader(http.StatusNotFound)
+		log.Println("Webfinger request rejected")
+		return
+	}
+
+	// If the webfinger request doesn't match our server then it
+	// should be rejected.
+	instanceHostString := data.GetServerURL()
+	if instanceHostString == "" {
+		w.WriteHeader(http.StatusNotImplemented)
+		return
+	}
+
+	instanceHostString = utils.GetHostnameFromURLString(instanceHostString)
+	if instanceHostString == "" || instanceHostString != host {
+		w.WriteHeader(http.StatusNotImplemented)
+		return
+	}
+
+	webfingerResponse := apmodels.MakeWebfingerResponse(user, user, host)
+
+	w.Header().Set("Content-Type", "application/jrd+json")
+
+	if err := json.NewEncoder(w).Encode(webfingerResponse); err != nil {
+		log.Errorln("unable to write webfinger response", err)
+	}
+}

activitypub/crypto/keys.go

@@ -0,0 +1,78 @@
+package crypto
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+	"net/url"
+
+	"github.com/owncast/owncast/core/data"
+	log "github.com/sirupsen/logrus"
+)
+
+// GetPublicKey will return the public key for the provided actor.
+func GetPublicKey(actorIRI *url.URL) PublicKey {
+	key := data.GetPublicKey()
+	idURL, err := url.Parse(actorIRI.String() + "#main-key")
+	if err != nil {
+		log.Errorln("unable to parse actor iri string", idURL, err)
+	}
+
+	return PublicKey{
+		ID:           idURL,
+		Owner:        actorIRI,
+		PublicKeyPem: key,
+	}
+}
+
+// GetPrivateKey will return the internal server private key.
+func GetPrivateKey() *rsa.PrivateKey {
+	key := data.GetPrivateKey()
+
+	block, _ := pem.Decode([]byte(key))
+	if block == nil {
+		log.Errorln(errors.New("failed to parse PEM block containing the key"))
+		return nil
+	}
+
+	priv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		log.Errorln("unable to parse private key", err)
+		return nil
+	}
+
+	return priv
+}
+
+// GenerateKeys will generate the private/public key pair needed for federation.
+func GenerateKeys() ([]byte, []byte, error) {
+	// generate key
+	privatekey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		log.Errorln("Cannot generate RSA key", err)
+		return nil, nil, err
+	}
+	publickey := &privatekey.PublicKey
+
+	privateKeyBytes := x509.MarshalPKCS1PrivateKey(privatekey)
+	privateKeyBlock := &pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: privateKeyBytes,
+	}
+	privatePem := pem.EncodeToMemory(privateKeyBlock)
+
+	publicKeyBytes, err := x509.MarshalPKIXPublicKey(publickey)
+	if err != nil {
+		log.Errorln("error when dumping publickey:", err)
+		return nil, nil, err
+	}
+	publicKeyBlock := &pem.Block{
+		Type:  "PUBLIC KEY",
+		Bytes: publicKeyBytes,
+	}
+	publicPem := pem.EncodeToMemory(publicKeyBlock)
+
+	return privatePem, publicPem, nil
+}

activitypub/crypto/publicKey.go

@@ -0,0 +1,10 @@
+package crypto
+
+import "net/url"
+
+// PublicKey represents a public key with associated ownership.
+type PublicKey struct {
+	ID           *url.URL `json:"id"`
+	Owner        *url.URL `json:"owner"`
+	PublicKeyPem string   `json:"publicKeyPem"`
+}

activitypub/crypto/sign.go

@@ -0,0 +1,70 @@
+package crypto
+
+import (
+	"crypto"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/go-fed/httpsig"
+)
+
+// SignResponse will sign a response using the provided response body and public key.
+func SignResponse(w http.ResponseWriter, body []byte, publicKey PublicKey) error {
+	privateKey := GetPrivateKey()
+
+	return signResponse(privateKey, *publicKey.ID, body, w)
+}
+
+func signResponse(privateKey crypto.PrivateKey, pubKeyID url.URL, body []byte, w http.ResponseWriter) error {
+	prefs := []httpsig.Algorithm{httpsig.RSA_SHA256}
+	digestAlgorithm := httpsig.DigestSha256
+
+	// The "Date" and "Digest" headers must already be set on r, as well as r.URL.
+	headersToSign := []string{}
+	if body != nil {
+		headersToSign = append(headersToSign, "digest")
+	}
+
+	signer, _, err := httpsig.NewSigner(prefs, digestAlgorithm, headersToSign, httpsig.Signature, 0)
+
+	if err != nil {
+		return err
+	}
+
+	// If r were a http.ResponseWriter, call SignResponse instead.
+	return signer.SignResponse(privateKey, pubKeyID.String(), w, body)
+}
+
+// SignRequest will sign an ounbound request given the provided body.
+func SignRequest(req *http.Request, body []byte, actorIRI *url.URL) error {
+	publicKey := GetPublicKey(actorIRI)
+	privateKey := GetPrivateKey()
+
+	return signRequest(privateKey, publicKey.ID.String(), body, req)
+}
+
+func signRequest(privateKey crypto.PrivateKey, pubKeyID string, body []byte, r *http.Request) error {
+	prefs := []httpsig.Algorithm{httpsig.RSA_SHA256}
+	digestAlgorithm := httpsig.DigestSha256
+
+	date := time.Now().UTC().Format("Mon, 02 Jan 2006 15:04:05 GMT")
+	r.Header["Date"] = []string{date}
+	r.Header["Host"] = []string{r.URL.Host}
+	r.Header["Accept"] = []string{`application/ld+json; profile="https://www.w3.org/ns/activitystreams"`}
+
+	// The "Date" and "Digest" headers must already be set on r, as well as r.URL.
+	headersToSign := []string{httpsig.RequestTarget, "host", "date"}
+	if body != nil {
+		headersToSign = append(headersToSign, "digest")
+	}
+
+	signer, _, err := httpsig.NewSigner(prefs, digestAlgorithm, headersToSign, httpsig.Signature, 0)
+
+	if err != nil {
+		return err
+	}
+
+	// If r were a http.ResponseWriter, call SignResponse instead.
+	return signer.SignRequest(privateKey, pubKeyID, r, body)
+}

activitypub/inbox/announce.go

@@ -0,0 +1,40 @@
+package inbox
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/core/chat/events"
+	"github.com/pkg/errors"
+)
+
+func handleAnnounceRequest(c context.Context, activity vocab.ActivityStreamsAnnounce) error {
+	object := activity.GetActivityStreamsObject()
+	actorReference := activity.GetActivityStreamsActor()
+	objectIRI := object.At(0).GetIRI().String()
+	actorIRI := actorReference.At(0).GetIRI().String()
+
+	if hasPreviouslyhandled, err := persistence.HasPreviouslyHandledInboundActivity(objectIRI, actorIRI, events.FediverseEngagementRepost); hasPreviouslyhandled || err != nil {
+		return errors.Wrap(err, "inbound activity of share/re-post has already been handled")
+	}
+
+	// Shares need to match a post we had already sent.
+	_, isLiveNotification, timestamp, err := persistence.GetObjectByIRI(objectIRI)
+	if err != nil {
+		return errors.Wrap(err, "Could not find post locally")
+	}
+
+	// Don't allow old activities to be liked
+	if time.Since(timestamp) > maxAgeForEngagement {
+		return errors.New("Activity is too old to be shared")
+	}
+
+	// Save as an accepted activity
+	if err := persistence.SaveInboundFediverseActivity(objectIRI, actorIRI, events.FediverseEngagementRepost, time.Now()); err != nil {
+		return errors.Wrap(err, "unable to save inbound share/re-post activity")
+	}
+
+	return handleEngagementActivity(events.FediverseEngagementRepost, isLiveNotification, actorReference, events.FediverseEngagementRepost)
+}

activitypub/inbox/chat.go

@@ -0,0 +1,62 @@
+package inbox
+
+import (
+	"fmt"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/resolvers"
+	"github.com/owncast/owncast/core/chat"
+	"github.com/owncast/owncast/core/chat/events"
+	"github.com/owncast/owncast/core/data"
+)
+
+func handleEngagementActivity(eventType events.EventType, isLiveNotification bool, actorReference vocab.ActivityStreamsActorProperty, action string) error {
+	// Do nothing if displaying engagement actions has been turned off.
+	if !data.GetFederationShowEngagement() {
+		return nil
+	}
+
+	// Do nothing if chat is disabled
+	if data.GetChatDisabled() {
+		return nil
+	}
+
+	// Get actor of the action
+	actor, _ := resolvers.GetResolvedActorFromActorProperty(actorReference)
+
+	// Send chat message
+	actorName := actor.Name
+	if actorName == "" {
+		actorName = actor.Username
+	}
+	actorIRI := actorReference.Begin().GetIRI().String()
+
+	userPrefix := fmt.Sprintf("%s ", actorName)
+	var suffix string
+	if isLiveNotification && action == events.FediverseEngagementLike {
+		suffix = "liked that this stream went live."
+	} else if action == events.FediverseEngagementLike {
+		suffix = fmt.Sprintf("liked a post from %s.", data.GetServerName())
+	} else if isLiveNotification && action == events.FediverseEngagementRepost {
+		suffix = "shared this stream with their followers."
+	} else if action == events.FediverseEngagementRepost {
+		suffix = fmt.Sprintf("shared a post from %s.", data.GetServerName())
+	} else if action == events.FediverseEngagementFollow {
+		suffix = "followed this stream."
+	} else {
+		return fmt.Errorf("could not handle event for sending to chat: %s", action)
+	}
+	body := fmt.Sprintf("%s %s", userPrefix, suffix)
+
+	var image *string
+	if actor.Image != nil {
+		s := actor.Image.String()
+		image = &s
+	}
+
+	if err := chat.SendFediverseAction(eventType, actor.FullUsername, image, body, actorIRI); err != nil {
+		return err
+	}
+
+	return nil
+}

activitypub/inbox/constants.go

@@ -0,0 +1,7 @@
+package inbox
+
+import "time"
+
+const (
+	maxAgeForEngagement = time.Hour * 36
+)

activitypub/inbox/follow.go

@@ -0,0 +1,88 @@
+package inbox
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/activitypub/resolvers"
+	"github.com/owncast/owncast/core/chat/events"
+	"github.com/owncast/owncast/core/data"
+	"github.com/pkg/errors"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func handleFollowInboxRequest(c context.Context, activity vocab.ActivityStreamsFollow) error {
+	follow, err := resolvers.MakeFollowRequest(c, activity)
+	if err != nil {
+		log.Errorln("unable to create follow inbox request", err)
+		return err
+	}
+
+	if follow == nil {
+		return fmt.Errorf("unable to handle request")
+	}
+
+	approved := !data.GetFederationIsPrivate()
+
+	followRequest := *follow
+
+	if err := persistence.AddFollow(followRequest, approved); err != nil {
+		log.Errorln("unable to save follow request", err)
+		return err
+	}
+
+	localAccountName := data.GetDefaultFederationUsername()
+
+	if approved {
+		if err := requests.SendFollowAccept(follow.Inbox, follow.FollowRequestIri, localAccountName); err != nil {
+			log.Errorln("unable to send follow accept", err)
+			return err
+		}
+	}
+
+	// Save as an accepted activity
+	actorReference := activity.GetActivityStreamsActor()
+	object := activity.GetActivityStreamsObject()
+	objectIRI := object.At(0).GetIRI().String()
+	actorIRI := actorReference.At(0).GetIRI().String()
+
+	// If this request is approved and we have not previously sent an action to
+	// chat due to a previous follow request, then do so.
+	hasPreviouslyhandled := true // Default so we don't send anything if it fails.
+	if approved {
+		hasPreviouslyhandled, err = persistence.HasPreviouslyHandledInboundActivity(objectIRI, actorIRI, events.FediverseEngagementFollow)
+		if err != nil {
+			log.Errorln("error checking for previously handled follow activity", err)
+		}
+	}
+
+	// Save this follow action to our activities table.
+	if err := persistence.SaveInboundFediverseActivity(objectIRI, actorIRI, events.FediverseEngagementFollow, time.Now()); err != nil {
+		return errors.Wrap(err, "unable to save inbound share/re-post activity")
+	}
+
+	// Send action to chat if it has not been previously handled.
+	if !hasPreviouslyhandled {
+		return handleEngagementActivity(events.FediverseEngagementFollow, false, actorReference, events.FediverseEngagementFollow)
+	}
+
+	return nil
+}
+
+func handleUnfollowRequest(c context.Context, activity vocab.ActivityStreamsUndo) error {
+	request := resolvers.MakeUnFollowRequest(c, activity)
+	if request == nil {
+		log.Errorf("unable to handle unfollow request")
+		return errors.New("unable to handle unfollow request")
+	}
+
+	unfollowRequest := *request
+	log.Traceln("unfollow request:", unfollowRequest)
+
+	return persistence.RemoveFollow(unfollowRequest)
+}

activitypub/inbox/like.go

@@ -0,0 +1,40 @@
+package inbox
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/core/chat/events"
+	"github.com/pkg/errors"
+)
+
+func handleLikeRequest(c context.Context, activity vocab.ActivityStreamsLike) error {
+	object := activity.GetActivityStreamsObject()
+	actorReference := activity.GetActivityStreamsActor()
+	objectIRI := object.At(0).GetIRI().String()
+	actorIRI := actorReference.At(0).GetIRI().String()
+
+	if hasPreviouslyhandled, err := persistence.HasPreviouslyHandledInboundActivity(objectIRI, actorIRI, events.FediverseEngagementLike); hasPreviouslyhandled || err != nil {
+		return errors.Wrap(err, "inbound activity of like has already been handled")
+	}
+
+	// Likes need to match a post we had already sent.
+	_, isLiveNotification, timestamp, err := persistence.GetObjectByIRI(objectIRI)
+	if err != nil {
+		return errors.Wrap(err, "Could not find post locally")
+	}
+
+	// Don't allow old activities to be liked
+	if time.Since(timestamp) > maxAgeForEngagement {
+		return errors.New("Activity is too old to be liked")
+	}
+
+	// Save as an accepted activity
+	if err := persistence.SaveInboundFediverseActivity(objectIRI, actorIRI, events.FediverseEngagementLike, time.Now()); err != nil {
+		return errors.Wrap(err, "unable to save inbound like activity")
+	}
+
+	return handleEngagementActivity(events.FediverseEngagementLike, isLiveNotification, actorReference, events.FediverseEngagementLike)
+}

activitypub/inbox/undo.go

@@ -0,0 +1,27 @@
+package inbox
+
+import (
+	"context"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/go-fed/activity/streams/vocab"
+)
+
+func handleUndoInboxRequest(c context.Context, activity vocab.ActivityStreamsUndo) error {
+	// Determine if this is an undo of a follow, favorite, announce, etc.
+	o := activity.GetActivityStreamsObject()
+	for iter := o.Begin(); iter != o.End(); iter = iter.Next() {
+		if iter.IsActivityStreamsFollow() {
+			// This is an Unfollow request
+			if err := handleUnfollowRequest(c, activity); err != nil {
+				return err
+			}
+		} else {
+			log.Traceln("Undo", iter.GetType().GetTypeName(), "ignored")
+			return nil
+		}
+	}
+
+	return nil
+}

activitypub/inbox/update.go

@@ -0,0 +1,25 @@
+package inbox
+
+import (
+	"context"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/resolvers"
+	log "github.com/sirupsen/logrus"
+)
+
+func handleUpdateRequest(c context.Context, activity vocab.ActivityStreamsUpdate) error {
+	// We only care about update events to followers.
+	if !activity.GetActivityStreamsObject().At(0).IsActivityStreamsPerson() {
+		return nil
+	}
+
+	actor, err := resolvers.GetResolvedActorFromActorProperty(activity.GetActivityStreamsActor())
+	if err != nil {
+		log.Errorln(err)
+		return err
+	}
+
+	return persistence.UpdateFollower(actor.ActorIri.String(), actor.Inbox.String(), actor.Name, actor.FullUsername, actor.Image.String())
+}

activitypub/inbox/worker.go

@@ -0,0 +1,130 @@
+package inbox
+
+import (
+	"context"
+	"crypto/x509"
+	"encoding/pem"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/pkg/errors"
+
+	"github.com/go-fed/httpsig"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/resolvers"
+	"github.com/owncast/owncast/core/data"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func handle(request apmodels.InboxRequest) {
+	if verified, err := Verify(request.Request); err != nil {
+		log.Debugln("Error in attempting to verify request", err)
+		return
+	} else if !verified {
+		log.Errorln("Request failed verification", err)
+		return
+	}
+
+	// c := context.WithValue(context.Background(), "account", request.ForLocalAccount) //nolint
+
+	if err := resolvers.Resolve(context.Background(), request.Body, handleUpdateRequest, handleFollowInboxRequest, handleLikeRequest, handleAnnounceRequest, handleUndoInboxRequest); err != nil {
+		log.Errorln("resolver error:", err)
+	}
+}
+
+// Verify will Verify the http signature of an inbound request as well as
+// check it against the list of blocked domains.
+func Verify(request *http.Request) (bool, error) {
+	verifier, err := httpsig.NewVerifier(request)
+	if err != nil {
+		return false, errors.Wrap(err, "failed to create key verifier for request")
+	}
+	pubKeyID, err := url.Parse(verifier.KeyId())
+	if err != nil {
+		return false, errors.Wrap(err, "failed to parse key to get key ID")
+	}
+
+	// Force federation only via servers using https.
+	if pubKeyID.Scheme != "https" {
+		return false, errors.New("federated servers must use https: " + pubKeyID.String())
+	}
+
+	signature := request.Header.Get("signature")
+	var algorithmString string
+	signatureComponents := strings.Split(signature, ",")
+	for _, component := range signatureComponents {
+		kv := strings.Split(component, "=")
+		if kv[0] == "algorithm" {
+			algorithmString = kv[1]
+			break
+		}
+	}
+
+	algorithmString = strings.Trim(algorithmString, "\"")
+	if algorithmString == "" {
+		return false, errors.New("Unable to determine algorithm to verify request")
+	}
+
+	actor, err := resolvers.GetResolvedActorFromIRI(pubKeyID.String())
+	if err != nil {
+		return false, errors.Wrap(err, "failed to resolve actor from IRI to fetch key")
+	}
+
+	// Test to see if the actor is in the list of blocked federated domains.
+	if isBlockedDomain(actor.ActorIri.Hostname()) {
+		return false, errors.New("domain is blocked")
+	}
+
+	// If actor is specifically blocked, then fail validation.
+	if blocked, err := isBlockedActor(actor.ActorIri); err != nil || blocked {
+		return false, err
+	}
+
+	key := actor.W3IDSecurityV1PublicKey.Begin().Get().GetW3IDSecurityV1PublicKeyPem().Get()
+	block, _ := pem.Decode([]byte(key))
+	if block == nil {
+		log.Errorln("failed to parse PEM block containing the public key")
+		return false, errors.New("failed to parse PEM block containing the public key")
+	}
+
+	parsedKey, err := x509.ParsePKIXPublicKey(block.Bytes)
+	if err != nil {
+		log.Errorln("failed to parse DER encoded public key: " + err.Error())
+		return false, errors.Wrap(err, "failed to parse DER encoded public key")
+	}
+
+	var algorithm httpsig.Algorithm = httpsig.Algorithm(algorithmString)
+
+	// The verifier will verify the Digest in addition to the HTTP signature
+	if err := verifier.Verify(parsedKey, algorithm); err != nil {
+		log.Warnln("verification error for", pubKeyID, err)
+		return false, errors.Wrap(err, "verification error: "+pubKeyID.String())
+	}
+
+	return true, nil
+}
+
+func isBlockedDomain(domain string) bool {
+	blockedDomains := data.GetBlockedFederatedDomains()
+
+	for _, blockedDomain := range blockedDomains {
+		if strings.Contains(domain, blockedDomain) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func isBlockedActor(actorIRI *url.URL) (bool, error) {
+	blockedactor, err := persistence.GetFollower(actorIRI.String())
+
+	if blockedactor != nil && blockedactor.DisabledAt != nil {
+		return true, errors.Wrap(err, "remote actor is blocked")
+	}
+
+	return false, nil
+}

activitypub/inbox/worker_test.go

@@ -0,0 +1,100 @@
+package inbox
+
+import (
+	"net/url"
+	"testing"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/core/data"
+)
+
+func makeFakePerson() vocab.ActivityStreamsPerson {
+	iri, _ := url.Parse("https://freedom.eagle/user/mrfoo")
+	name := "Mr Foo"
+	username := "foodawg"
+	inbox, _ := url.Parse("https://fake.fediverse.server/user/mrfoo/inbox")
+	userAvatarURL, _ := url.Parse("https://fake.fediverse.server/user/mrfoo/avatar.png")
+
+	person := streams.NewActivityStreamsPerson()
+
+	id := streams.NewJSONLDIdProperty()
+	id.Set(iri)
+	person.SetJSONLDId(id)
+
+	nameProperty := streams.NewActivityStreamsNameProperty()
+	nameProperty.AppendXMLSchemaString(name)
+	person.SetActivityStreamsName(nameProperty)
+
+	preferredUsernameProperty := streams.NewActivityStreamsPreferredUsernameProperty()
+	preferredUsernameProperty.SetXMLSchemaString(username)
+	person.SetActivityStreamsPreferredUsername(preferredUsernameProperty)
+
+	inboxProp := streams.NewActivityStreamsInboxProperty()
+	inboxProp.SetIRI(inbox)
+	person.SetActivityStreamsInbox(inboxProp)
+
+	image := streams.NewActivityStreamsImage()
+	imgProp := streams.NewActivityStreamsUrlProperty()
+	imgProp.AppendIRI(userAvatarURL)
+	image.SetActivityStreamsUrl(imgProp)
+	icon := streams.NewActivityStreamsIconProperty()
+	icon.AppendActivityStreamsImage(image)
+	person.SetActivityStreamsIcon(icon)
+
+	return person
+}
+
+func TestMain(m *testing.M) {
+	data.SetupPersistence(":memory:")
+	data.SetServerURL("https://my.cool.site.biz")
+	persistence.Setup(data.GetDatastore())
+	m.Run()
+}
+
+func TestBlockedDomains(t *testing.T) {
+	person := makeFakePerson()
+
+	data.SetBlockedFederatedDomains([]string{"freedom.eagle", "guns.life"})
+
+	if len(data.GetBlockedFederatedDomains()) != 2 {
+		t.Error("Blocked federated domains is not set correctly")
+	}
+
+	for _, domain := range data.GetBlockedFederatedDomains() {
+		if domain == person.GetJSONLDId().GetIRI().Host {
+			return
+		}
+	}
+
+	t.Error("Failed to catch blocked domain")
+}
+
+func TestBlockedActors(t *testing.T) {
+	person := makeFakePerson()
+	persistence.AddFollow(apmodels.ActivityPubActor{
+		ActorIri:         person.GetJSONLDId().GetIRI(),
+		Inbox:            person.GetJSONLDId().GetIRI(),
+		FollowRequestIri: person.GetJSONLDId().GetIRI(),
+	}, false)
+	persistence.BlockOrRejectFollower(person.GetJSONLDId().GetIRI().String())
+
+	blocked, err := isBlockedActor(person.GetJSONLDId().GetIRI())
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	if !blocked {
+		t.Error("Failed to block actor")
+	}
+
+	failedBlockIRI, _ := url.Parse("https://freedom.eagle/user/mrbar")
+	failedBlock, err := isBlockedActor(failedBlockIRI)
+
+	if failedBlock {
+		t.Error("Invalid blocking of unblocked actor IRI")
+	}
+}

activitypub/inbox/workerpool.go

@@ -0,0 +1,44 @@
+package inbox
+
+import (
+	"github.com/owncast/owncast/activitypub/apmodels"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	// InboxWorkerPoolSize defines the number of concurrent ActivityPub handlers.
+	InboxWorkerPoolSize = 10
+)
+
+// Job struct bundling the ActivityPub and the payload in one struct.
+type Job struct {
+	request apmodels.InboxRequest
+}
+
+var queue chan Job
+
+// InitInboxWorkerPool starts n go routines that await ActivityPub jobs.
+func InitInboxWorkerPool() {
+	queue = make(chan Job)
+
+	// start workers
+	for i := 1; i <= InboxWorkerPoolSize; i++ {
+		go worker(i, queue)
+	}
+}
+
+// AddToQueue will queue up an outbound http request.
+func AddToQueue(req apmodels.InboxRequest) {
+	log.Tracef("Queued request for ActivityPub inbox handler")
+	queue <- Job{req}
+}
+
+func worker(workerID int, queue <-chan Job) {
+	log.Debugf("Started ActivityPub worker %d", workerID)
+
+	for job := range queue {
+		handle(job.request)
+
+		log.Tracef("Done with ActivityPub inbox handler using worker %d", workerID)
+	}
+}

activitypub/outbox/outbox.go

@@ -0,0 +1,245 @@
+package outbox
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/activitypub/workerpool"
+
+	"github.com/owncast/owncast/config"
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/utils"
+	log "github.com/sirupsen/logrus"
+	"github.com/teris-io/shortid"
+)
+
+// SendLive will send all followers the message saying you started a live stream.
+func SendLive() error {
+	textContent := data.GetFederationGoLiveMessage()
+
+	// If the message is empty then do not send it.
+	if textContent == "" {
+		return nil
+	}
+
+	tagStrings := []string{}
+	reg := regexp.MustCompile("[^a-zA-Z0-9]+")
+
+	tagProp := streams.NewActivityStreamsTagProperty()
+	for _, tagString := range data.GetServerMetadataTags() {
+		tagWithoutSpecialCharacters := reg.ReplaceAllString(tagString, "")
+		hashtag := apmodels.MakeHashtag(tagWithoutSpecialCharacters)
+		tagProp.AppendTootHashtag(hashtag)
+		tagString := getHashtagLinkHTMLFromTagString(tagWithoutSpecialCharacters)
+		tagStrings = append(tagStrings, tagString)
+	}
+
+	// Manually add Owncast hashtag if it doesn't already exist so it shows up
+	// in Owncast search results.
+	// We can remove this down the road, but it'll be nice for now.
+	if _, exists := utils.FindInSlice(tagStrings, "owncast"); !exists {
+		hashtag := apmodels.MakeHashtag("owncast")
+		tagProp.AppendTootHashtag(hashtag)
+	}
+
+	tagsString := strings.Join(tagStrings, " ")
+
+	var streamTitle string
+	if title := data.GetStreamTitle(); title != "" {
+		streamTitle = fmt.Sprintf("<p>%s</p>", title)
+	}
+	textContent = fmt.Sprintf("<p>%s</p><p>%s</p><p>%s</p><a href=\"%s\">%s</a>", textContent, streamTitle, tagsString, data.GetServerURL(), data.GetServerURL())
+
+	activity, _, note, noteID := createBaseOutboundMessage(textContent)
+
+	note.SetActivityStreamsTag(tagProp)
+
+	// Attach an image along with the Federated message.
+	previewURL, err := url.Parse(data.GetServerURL())
+	if err == nil {
+		var imageToAttach string
+		previewGif := filepath.Join(config.WebRoot, "preview.gif")
+		thumbnailJpg := filepath.Join(config.WebRoot, "thumbnail.jpg")
+
+		if utils.DoesFileExists(previewGif) {
+			imageToAttach = "preview.gif"
+		} else if utils.DoesFileExists(thumbnailJpg) {
+			imageToAttach = "thumbnail.jpg"
+		}
+		if imageToAttach != "" {
+			previewURL.Path = imageToAttach
+			apmodels.AddImageAttachmentToNote(note, previewURL.String())
+		}
+	}
+
+	if data.GetNSFW() {
+		// Mark content as sensitive.
+		sensitive := streams.NewActivityStreamsSensitiveProperty()
+		sensitive.AppendXMLSchemaBoolean(true)
+		note.SetActivityStreamsSensitive(sensitive)
+	}
+
+	b, err := apmodels.Serialize(activity)
+	if err != nil {
+		log.Errorln("unable to serialize go live message activity", err)
+		return errors.New("unable to serialize go live message activity " + err.Error())
+	}
+
+	if err := SendToFollowers(b); err != nil {
+		return err
+	}
+
+	if err := Add(note, noteID, true); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// SendPublicMessage will send a public message to all followers.
+func SendPublicMessage(textContent string) error {
+	originalContent := textContent
+	textContent = utils.RenderSimpleMarkdown(textContent)
+
+	tagProp := streams.NewActivityStreamsTagProperty()
+
+	// Iterate through the post text and find #Hashtags.
+	words := strings.Split(originalContent, " ")
+	for _, word := range words {
+		if strings.HasPrefix(word, "#") {
+			tagWithoutHashtag := strings.TrimPrefix(word, "#")
+
+			// Replace the instances of the tag with a link to the tag page.
+			tagHTML := getHashtagLinkHTMLFromTagString(tagWithoutHashtag)
+			textContent = strings.ReplaceAll(textContent, word, tagHTML)
+
+			// Create Hashtag object for the tag.
+			hashtag := apmodels.MakeHashtag(tagWithoutHashtag)
+			tagProp.AppendTootHashtag(hashtag)
+		}
+	}
+
+	activity, _, note, noteID := createBaseOutboundMessage(textContent)
+	note.SetActivityStreamsTag(tagProp)
+
+	b, err := apmodels.Serialize(activity)
+	if err != nil {
+		log.Errorln("unable to serialize custom fediverse message activity", err)
+		return errors.New("unable to serialize custom fediverse message activity " + err.Error())
+	}
+
+	if err := SendToFollowers(b); err != nil {
+		return err
+	}
+
+	if err := Add(note, noteID, false); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// nolint: unparam
+func createBaseOutboundMessage(textContent string) (vocab.ActivityStreamsCreate, string, vocab.ActivityStreamsNote, string) {
+	localActor := apmodels.MakeLocalIRIForAccount(data.GetDefaultFederationUsername())
+	noteID := shortid.MustGenerate()
+	noteIRI := apmodels.MakeLocalIRIForResource(noteID)
+	id := shortid.MustGenerate()
+	activity := apmodels.CreateCreateActivity(id, localActor)
+	object := streams.NewActivityStreamsObjectProperty()
+	activity.SetActivityStreamsObject(object)
+
+	note := apmodels.MakeNote(textContent, noteIRI, localActor)
+	object.AppendActivityStreamsNote(note)
+
+	return activity, id, note, noteID
+}
+
+// Get Hashtag HTML link for a given tag (without # prefix).
+func getHashtagLinkHTMLFromTagString(baseHashtag string) string {
+	return fmt.Sprintf("<a class=\"hashtag\" href=\"https://directory.owncast.online/tags/%s\">#%s</a>", baseHashtag, baseHashtag)
+}
+
+// SendToFollowers will send an arbitrary payload to all follower inboxes.
+func SendToFollowers(payload []byte) error {
+	localActor := apmodels.MakeLocalIRIForAccount(data.GetDefaultFederationUsername())
+
+	followers, err := persistence.GetFederationFollowers(-1, 0)
+	if err != nil {
+		log.Errorln("unable to fetch followers to send to", err)
+		return errors.New("unable to fetch followers to send payload to")
+	}
+
+	for _, follower := range followers {
+		inbox, _ := url.Parse(follower.Inbox)
+		req, err := requests.CreateSignedRequest(payload, inbox, localActor)
+		if err != nil {
+			log.Errorln("unable to create outbox request", follower.Inbox, err)
+			return errors.New("unable to create outbox request: " + follower.Inbox)
+		}
+
+		workerpool.AddToOutboundQueue(req)
+	}
+	return nil
+}
+
+// UpdateFollowersWithAccountUpdates will send an update to all followers alerting of a profile update.
+func UpdateFollowersWithAccountUpdates() error {
+	// Don't do anything if federation is disabled.
+	if !data.GetFederationEnabled() {
+		return nil
+	}
+
+	id := shortid.MustGenerate()
+	objectID := apmodels.MakeLocalIRIForResource(id)
+	activity := apmodels.MakeUpdateActivity(objectID)
+
+	actor := streams.NewActivityStreamsPerson()
+	actorID := apmodels.MakeLocalIRIForAccount(data.GetDefaultFederationUsername())
+	actorIDProperty := streams.NewJSONLDIdProperty()
+	actorIDProperty.Set(actorID)
+	actor.SetJSONLDId(actorIDProperty)
+
+	actorProperty := streams.NewActivityStreamsActorProperty()
+	actorProperty.AppendActivityStreamsPerson(actor)
+	activity.SetActivityStreamsActor(actorProperty)
+
+	obj := streams.NewActivityStreamsObjectProperty()
+	obj.AppendIRI(actorID)
+	activity.SetActivityStreamsObject(obj)
+
+	b, err := apmodels.Serialize(activity)
+	if err != nil {
+		log.Errorln("unable to serialize send update actor activity", err)
+		return errors.New("unable to serialize send update actor activity")
+	}
+	return SendToFollowers(b)
+}
+
+// Add will save an ActivityPub object to the datastore.
+func Add(item vocab.Type, id string, isLiveNotification bool) error {
+	iri := item.GetJSONLDId().GetIRI().String()
+	typeString := item.GetTypeName()
+
+	if iri == "" {
+		log.Errorln("Unable to get iri from item")
+		return errors.New("Unable to get iri from item " + id)
+	}
+
+	b, err := apmodels.Serialize(item)
+	if err != nil {
+		log.Errorln("unable to serialize model when saving to outbox", err)
+		return err
+	}
+
+	return persistence.AddToOutbox(iri, b, typeString, isLiveNotification)
+}

activitypub/persistence/followers.go

@@ -0,0 +1,121 @@
+package persistence
+
+import (
+	"context"
+
+	"github.com/owncast/owncast/db"
+	"github.com/owncast/owncast/models"
+	"github.com/owncast/owncast/utils"
+	log "github.com/sirupsen/logrus"
+)
+
+func createFederationFollowersTable() {
+	log.Traceln("Creating federation followers table...")
+
+	createTableSQL := `CREATE TABLE IF NOT EXISTS ap_followers (
+		"iri" TEXT NOT NULL,
+		"inbox" TEXT NOT NULL,
+		"name" TEXT,
+		"username" TEXT NOT NULL,
+		"image" TEXT,
+    "request" TEXT NOT NULL,
+		"created_at" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+		"approved_at" TIMESTAMP,
+    "disabled_at" TIMESTAMP,
+		PRIMARY KEY (iri));
+		CREATE INDEX iri_index ON ap_followers (iri);
+    CREATE INDEX approved_at_index ON ap_followers (approved_at);`
+
+	stmt, err := _datastore.DB.Prepare(createTableSQL)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+	_, err = stmt.Exec()
+	if err != nil {
+		log.Warnln("error executing sql creating followers table", createTableSQL, err)
+	}
+}
+
+// GetFollowerCount will return the number of followers we're keeping track of.
+func GetFollowerCount() (int64, error) {
+	ctx := context.Background()
+	return _datastore.GetQueries().GetFollowerCount(ctx)
+}
+
+// GetFederationFollowers will return a slice of the followers we keep track of locally.
+func GetFederationFollowers(limit int, offset int) ([]models.Follower, error) {
+	ctx := context.Background()
+	followersResult, err := _datastore.GetQueries().GetFederationFollowersWithOffset(ctx, db.GetFederationFollowersWithOffsetParams{
+		Limit:  int32(limit),
+		Offset: int32(offset),
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	followers := make([]models.Follower, 0)
+
+	for _, row := range followersResult {
+		singleFollower := models.Follower{
+			Name:      row.Name.String,
+			Username:  row.Username,
+			Image:     row.Image.String,
+			ActorIRI:  row.Iri,
+			Inbox:     row.Inbox,
+			Timestamp: utils.NullTime(row.CreatedAt),
+		}
+
+		followers = append(followers, singleFollower)
+	}
+
+	return followers, nil
+}
+
+// GetPendingFollowRequests will return pending follow requests.
+func GetPendingFollowRequests() ([]models.Follower, error) {
+	pendingFollowersResult, err := _datastore.GetQueries().GetFederationFollowerApprovalRequests(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	followers := make([]models.Follower, 0)
+
+	for _, row := range pendingFollowersResult {
+		singleFollower := models.Follower{
+			Name:      row.Name.String,
+			Username:  row.Username,
+			Image:     row.Image.String,
+			ActorIRI:  row.Iri,
+			Inbox:     row.Inbox,
+			Timestamp: utils.NullTime{Time: row.CreatedAt.Time, Valid: true},
+		}
+		followers = append(followers, singleFollower)
+	}
+
+	return followers, nil
+}
+
+// GetBlockedAndRejectedFollowers will return blocked and rejected followers.
+func GetBlockedAndRejectedFollowers() ([]models.Follower, error) {
+	pendingFollowersResult, err := _datastore.GetQueries().GetRejectedAndBlockedFollowers(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	followers := make([]models.Follower, 0)
+
+	for _, row := range pendingFollowersResult {
+		singleFollower := models.Follower{
+			Name:       row.Name.String,
+			Username:   row.Username,
+			Image:      row.Image.String,
+			ActorIRI:   row.Iri,
+			DisabledAt: utils.NullTime{Time: row.DisabledAt.Time, Valid: true},
+			Timestamp:  utils.NullTime{Time: row.CreatedAt.Time, Valid: true},
+		}
+		followers = append(followers, singleFollower)
+	}
+
+	return followers, nil
+}

activitypub/persistence/persistence.go

@@ -0,0 +1,360 @@
+package persistence
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/resolvers"
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/db"
+	"github.com/owncast/owncast/models"
+	"github.com/pkg/errors"
+
+	log "github.com/sirupsen/logrus"
+)
+
+var _datastore *data.Datastore
+
+// Setup will initialize the ActivityPub persistence layer with the provided datastore.
+func Setup(datastore *data.Datastore) {
+	_datastore = datastore
+	createFederationFollowersTable()
+	createFederationOutboxTable()
+	createFederatedActivitiesTable()
+}
+
+// AddFollow will save a follow to the datastore.
+func AddFollow(follow apmodels.ActivityPubActor, approved bool) error {
+	log.Traceln("Saving", follow.ActorIri, "as a follower.")
+	var image string
+	if follow.Image != nil {
+		image = follow.Image.String()
+	}
+	return createFollow(follow.ActorIri.String(), follow.Inbox.String(), follow.FollowRequestIri.String(), follow.Name, follow.Username, image, approved)
+}
+
+// RemoveFollow will remove a follow from the datastore.
+func RemoveFollow(unfollow apmodels.ActivityPubActor) error {
+	log.Traceln("Removing", unfollow.ActorIri, "as a follower.")
+	return removeFollow(unfollow.ActorIri)
+}
+
+// GetFollower will return a single follower/request given an IRI.
+func GetFollower(iri string) (*apmodels.ActivityPubActor, error) {
+	result, err := _datastore.GetQueries().GetFollowerByIRI(context.Background(), iri)
+	if err != nil {
+		return nil, err
+	}
+
+	followIRI, err := url.Parse(result.Request)
+	if err != nil {
+		return nil, errors.Wrap(err, "error parsing follow request IRI")
+	}
+
+	iriURL, err := url.Parse(result.Iri)
+	if err != nil {
+		return nil, errors.Wrap(err, "error parsing actor IRI")
+	}
+
+	inbox, err := url.Parse(result.Inbox)
+	if err != nil {
+		return nil, errors.Wrap(err, "error parsing acting inbox")
+	}
+
+	image, _ := url.Parse(result.Image.String)
+
+	var disabledAt *time.Time
+	if result.DisabledAt.Valid {
+		disabledAt = &result.DisabledAt.Time
+	}
+
+	follower := apmodels.ActivityPubActor{
+		ActorIri:         iriURL,
+		Inbox:            inbox,
+		Name:             result.Name.String,
+		Username:         result.Username,
+		Image:            image,
+		FollowRequestIri: followIRI,
+		DisabledAt:       disabledAt,
+	}
+
+	return &follower, nil
+}
+
+// ApprovePreviousFollowRequest will approve a follow request.
+func ApprovePreviousFollowRequest(iri string) error {
+	return _datastore.GetQueries().ApproveFederationFollower(context.Background(), db.ApproveFederationFollowerParams{
+		Iri: iri,
+		ApprovedAt: sql.NullTime{
+			Time:  time.Now(),
+			Valid: true,
+		},
+	})
+}
+
+// BlockOrRejectFollower will block an existing follower or reject a follow request.
+func BlockOrRejectFollower(iri string) error {
+	return _datastore.GetQueries().RejectFederationFollower(context.Background(), db.RejectFederationFollowerParams{
+		Iri: iri,
+		DisabledAt: sql.NullTime{
+			Time:  time.Now(),
+			Valid: true,
+		},
+	})
+}
+
+func createFollow(actor string, inbox string, request string, name string, username string, image string, approved bool) error {
+	tx, err := _datastore.DB.Begin()
+	if err != nil {
+		log.Debugln(err)
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	var approvedAt sql.NullTime
+	if approved {
+		approvedAt = sql.NullTime{
+			Time:  time.Now(),
+			Valid: true,
+		}
+	}
+
+	if err = _datastore.GetQueries().WithTx(tx).AddFollower(context.Background(), db.AddFollowerParams{
+		Iri:        actor,
+		Inbox:      inbox,
+		Name:       sql.NullString{String: name, Valid: true},
+		Username:   username,
+		Image:      sql.NullString{String: image, Valid: true},
+		ApprovedAt: approvedAt,
+		Request:    request,
+	}); err != nil {
+		log.Errorln("error creating new federation follow: ", err)
+	}
+
+	return tx.Commit()
+}
+
+// UpdateFollower will update the details of a stored follower given an IRI.
+func UpdateFollower(actorIRI string, inbox string, name string, username string, image string) error {
+	_datastore.DbLock.Lock()
+	defer _datastore.DbLock.Unlock()
+
+	tx, err := _datastore.DB.Begin()
+	if err != nil {
+		log.Debugln(err)
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	if err = _datastore.GetQueries().WithTx(tx).UpdateFollowerByIRI(context.Background(), db.UpdateFollowerByIRIParams{
+		Inbox:    inbox,
+		Name:     sql.NullString{String: name, Valid: true},
+		Username: username,
+		Image:    sql.NullString{String: image, Valid: true},
+		Iri:      actorIRI,
+	}); err != nil {
+		return fmt.Errorf("error updating follower %s %s", actorIRI, err)
+	}
+
+	return tx.Commit()
+}
+
+func removeFollow(actor *url.URL) error {
+	_datastore.DbLock.Lock()
+	defer _datastore.DbLock.Unlock()
+
+	tx, err := _datastore.DB.Begin()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	if err := _datastore.GetQueries().WithTx(tx).RemoveFollowerByIRI(context.Background(), actor.String()); err != nil {
+		return err
+	}
+
+	return tx.Commit()
+}
+
+// createFederatedActivitiesTable will create the accepted
+// activities table if needed.
+func createFederatedActivitiesTable() {
+	createTableSQL := `CREATE TABLE IF NOT EXISTS ap_accepted_activities (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+		"iri" TEXT NOT NULL,
+    "actor" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+		"timestamp" TIMESTAMP NOT NULL
+	);
+	CREATE INDEX iri_actor_index ON ap_accepted_activities (iri,actor);`
+
+	stmt, err := _datastore.DB.Prepare(createTableSQL)
+	if err != nil {
+		log.Fatal("error creating inbox table", err)
+	}
+	defer stmt.Close()
+	if _, err := stmt.Exec(); err != nil {
+		log.Fatal("error creating inbound federated activities table", err)
+	}
+}
+
+func createFederationOutboxTable() {
+	log.Traceln("Creating federation outbox table...")
+	createTableSQL := `CREATE TABLE IF NOT EXISTS ap_outbox (
+		"iri" TEXT NOT NULL,
+		"value" BLOB,
+		"type" TEXT NOT NULL,
+		"created_at" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    "live_notification" BOOLEAN DEFAULT FALSE,
+		PRIMARY KEY (iri));
+		CREATE INDEX iri ON ap_outbox (iri);
+		CREATE INDEX type ON ap_outbox (type);
+    CREATE INDEX live_notification ON ap_outbox (live_notification);`
+
+	stmt, err := _datastore.DB.Prepare(createTableSQL)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+	_, err = stmt.Exec()
+	if err != nil {
+		log.Warnln("error executing sql creating outbox table", createTableSQL, err)
+	}
+}
+
+// GetOutboxPostCount will return the number of posts in the outbox.
+func GetOutboxPostCount() (int64, error) {
+	ctx := context.Background()
+	return _datastore.GetQueries().GetLocalPostCount(ctx)
+}
+
+// GetOutbox will return an instance of the outbox populated by stored items.
+func GetOutbox(limit int, offset int) (vocab.ActivityStreamsOrderedCollection, error) {
+	collection := streams.NewActivityStreamsOrderedCollection()
+	orderedItems := streams.NewActivityStreamsOrderedItemsProperty()
+	rows, err := _datastore.GetQueries().GetOutboxWithOffset(
+		context.Background(),
+		db.GetOutboxWithOffsetParams{Limit: int32(limit), Offset: int32(offset)},
+	)
+	if err != nil {
+		return collection, err
+	}
+
+	for _, value := range rows {
+		createCallback := func(c context.Context, activity vocab.ActivityStreamsCreate) error {
+			orderedItems.AppendActivityStreamsCreate(activity)
+			return nil
+		}
+		if err := resolvers.Resolve(context.Background(), value, createCallback); err != nil {
+			return collection, err
+		}
+	}
+
+	return collection, nil
+}
+
+// AddToOutbox will store a single payload to the persistence layer.
+func AddToOutbox(iri string, itemData []byte, typeString string, isLiveNotification bool) error {
+	tx, err := _datastore.DB.Begin()
+	if err != nil {
+		log.Debugln(err)
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	if err = _datastore.GetQueries().WithTx(tx).AddToOutbox(context.Background(), db.AddToOutboxParams{
+		Iri:              iri,
+		Value:            itemData,
+		Type:             typeString,
+		LiveNotification: sql.NullBool{Bool: isLiveNotification, Valid: true},
+	}); err != nil {
+		return fmt.Errorf("error creating new item in federation outbox %s", err)
+	}
+
+	return tx.Commit()
+}
+
+// GetObjectByID will return a string representation of a single object by the ID.
+func GetObjectByID(id string) (string, error) {
+	value, err := _datastore.GetQueries().GetObjectFromOutboxByID(context.Background(), id)
+	return string(value), err
+}
+
+// GetObjectByIRI will return a string representation of a single object by the IRI.
+func GetObjectByIRI(iri string) (string, bool, time.Time, error) {
+	row, err := _datastore.GetQueries().GetObjectFromOutboxByIRI(context.Background(), iri)
+	return string(row.Value), row.LiveNotification.Bool, row.CreatedAt.Time, err
+}
+
+// GetLocalPostCount will return the number of posts existing locally.
+func GetLocalPostCount() (int64, error) {
+	ctx := context.Background()
+	return _datastore.GetQueries().GetLocalPostCount(ctx)
+}
+
+// SaveInboundFediverseActivity will save an event to the ap_inbound_activities table.
+func SaveInboundFediverseActivity(objectIRI string, actorIRI string, eventType string, timestamp time.Time) error {
+	if err := _datastore.GetQueries().AddToAcceptedActivities(context.Background(), db.AddToAcceptedActivitiesParams{
+		Iri:       objectIRI,
+		Actor:     actorIRI,
+		Type:      eventType,
+		Timestamp: timestamp,
+	}); err != nil {
+		return errors.Wrap(err, "error saving event "+objectIRI)
+	}
+
+	return nil
+}
+
+// GetInboundActivities will return a collection of saved, federated activities
+// limited and offset by the values provided to support pagination.
+func GetInboundActivities(limit int, offset int) ([]models.FederatedActivity, error) {
+	ctx := context.Background()
+	rows, err := _datastore.GetQueries().GetInboundActivitiesWithOffset(ctx, db.GetInboundActivitiesWithOffsetParams{
+		Limit:  int32(limit),
+		Offset: int32(offset),
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	activities := make([]models.FederatedActivity, 0)
+
+	for _, row := range rows {
+		singleActivity := models.FederatedActivity{
+			IRI:       row.Iri,
+			ActorIRI:  row.Actor,
+			Type:      row.Type,
+			Timestamp: row.Timestamp,
+		}
+		activities = append(activities, singleActivity)
+	}
+
+	return activities, nil
+}
+
+// HasPreviouslyHandledInboundActivity will return if we have previously handled
+// an inbound federated activity.
+func HasPreviouslyHandledInboundActivity(iri string, actorIRI string, eventType string) (bool, error) {
+	exists, err := _datastore.GetQueries().DoesInboundActivityExist(context.Background(), db.DoesInboundActivityExistParams{
+		Iri:   iri,
+		Actor: actorIRI,
+		Type:  eventType,
+	})
+	if err != nil {
+		return false, err
+	}
+
+	return exists > 0, nil
+}

activitypub/requests/acceptFollow.go

@@ -0,0 +1,51 @@
+package requests
+
+import (
+	"encoding/json"
+	"net/url"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/workerpool"
+
+	"github.com/teris-io/shortid"
+)
+
+// SendFollowAccept will send an accept activity to a follow request from a specified local user.
+func SendFollowAccept(inbox *url.URL, followRequestIRI *url.URL, fromLocalAccountName string) error {
+	followAccept := makeAcceptFollow(followRequestIRI, fromLocalAccountName)
+	localAccountIRI := apmodels.MakeLocalIRIForAccount(fromLocalAccountName)
+
+	var jsonmap map[string]interface{}
+	jsonmap, _ = streams.Serialize(followAccept)
+	b, _ := json.Marshal(jsonmap)
+	req, err := CreateSignedRequest(b, inbox, localAccountIRI)
+	if err != nil {
+		return err
+	}
+
+	workerpool.AddToOutboundQueue(req)
+
+	return nil
+}
+
+func makeAcceptFollow(followRequestIri *url.URL, fromAccountName string) vocab.ActivityStreamsAccept {
+	acceptIDString := shortid.MustGenerate()
+	acceptID := apmodels.MakeLocalIRIForResource(acceptIDString)
+	actorID := apmodels.MakeLocalIRIForAccount(fromAccountName)
+
+	accept := streams.NewActivityStreamsAccept()
+	idProperty := streams.NewJSONLDIdProperty()
+	idProperty.SetIRI(acceptID)
+	accept.SetJSONLDId(idProperty)
+
+	actor := apmodels.MakeActorPropertyWithID(actorID)
+	accept.SetActivityStreamsActor(actor)
+
+	object := streams.NewActivityStreamsObjectProperty()
+	object.AppendIRI(followRequestIri)
+	accept.SetActivityStreamsObject(object)
+
+	return accept
+}

activitypub/requests/http.go

@@ -0,0 +1,75 @@
+package requests
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/crypto"
+
+	"github.com/owncast/owncast/config"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// WriteStreamResponse will write a ActivityPub object to the provided ResponseWriter and sign with the provided key.
+func WriteStreamResponse(item vocab.Type, w http.ResponseWriter, publicKey crypto.PublicKey) error {
+	var jsonmap map[string]interface{}
+	jsonmap, _ = streams.Serialize(item)
+	b, err := json.Marshal(jsonmap)
+	if err != nil {
+		return err
+	}
+
+	return WriteResponse(b, w, publicKey)
+}
+
+// WritePayloadResponse will write any arbitrary object to the provided ResponseWriter and sign with the provided key.
+func WritePayloadResponse(payload interface{}, w http.ResponseWriter, publicKey crypto.PublicKey) error {
+	b, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+
+	return WriteResponse(b, w, publicKey)
+}
+
+// WriteResponse will write any arbitrary payload to the provided ResponseWriter and sign with the provided key.
+func WriteResponse(payload []byte, w http.ResponseWriter, publicKey crypto.PublicKey) error {
+	w.Header().Set("Content-Type", "application/activity+json")
+
+	if err := crypto.SignResponse(w, payload, publicKey); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		log.Errorln("unable to sign response", err)
+		return err
+	}
+
+	if _, err := w.Write(payload); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return err
+	}
+
+	return nil
+}
+
+// CreateSignedRequest will create a signed POST request of a payload to the provided destination.
+func CreateSignedRequest(payload []byte, url *url.URL, fromActorIRI *url.URL) (*http.Request, error) {
+	log.Debugln("Sending", string(payload), "to", url)
+
+	req, _ := http.NewRequest("POST", url.String(), bytes.NewBuffer(payload))
+
+	ua := fmt.Sprintf("%s; https://owncast.online", config.GetReleaseString())
+	req.Header.Set("User-Agent", ua)
+	req.Header.Set("Content-Type", "application/activity+json")
+
+	if err := crypto.SignRequest(req, payload, fromActorIRI); err != nil {
+		log.Errorln("error signing request:", err)
+		return nil, err
+	}
+
+	return req, nil
+}

activitypub/resolvers/follow.go

@@ -0,0 +1,57 @@
+package resolvers
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	log "github.com/sirupsen/logrus"
+)
+
+func getPersonFromFollow(activity vocab.ActivityStreamsFollow) (apmodels.ActivityPubActor, error) {
+	return GetResolvedActorFromActorProperty(activity.GetActivityStreamsActor())
+}
+
+// MakeFollowRequest will convert an inbound Follow request to our internal actor model.
+func MakeFollowRequest(c context.Context, activity vocab.ActivityStreamsFollow) (*apmodels.ActivityPubActor, error) {
+	person, err := getPersonFromFollow(activity)
+	if err != nil {
+		return nil, errors.New("unable to resolve person from follow request: " + err.Error())
+	}
+
+	hostname := person.ActorIri.Hostname()
+	username := person.Username
+	fullUsername := fmt.Sprintf("%s@%s", username, hostname)
+
+	followRequest := apmodels.ActivityPubActor{
+		ActorIri:         person.ActorIri,
+		FollowRequestIri: activity.GetJSONLDId().Get(),
+		Inbox:            person.Inbox,
+		Name:             person.Name,
+		Username:         fullUsername,
+		Image:            person.Image,
+	}
+
+	return &followRequest, nil
+}
+
+// MakeUnFollowRequest will convert an inbound Unfollow request to our internal actor model.
+func MakeUnFollowRequest(c context.Context, activity vocab.ActivityStreamsUndo) *apmodels.ActivityPubActor {
+	person, err := GetResolvedActorFromActorProperty(activity.GetActivityStreamsActor())
+	if err != nil {
+		log.Errorln("unable to resolve person from actor iri", person.ActorIri, err)
+		return nil
+	}
+
+	unfollowRequest := apmodels.ActivityPubActor{
+		ActorIri:         person.ActorIri,
+		FollowRequestIri: activity.GetJSONLDId().Get(),
+		Inbox:            person.Inbox,
+		Name:             person.Name,
+		Image:            person.Image,
+	}
+
+	return &unfollowRequest
+}

activitypub/resolvers/resolve.go

@@ -0,0 +1,125 @@
+package resolvers
+
+import (
+	"context"
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/owncast/owncast/activitypub/apmodels"
+	"github.com/owncast/owncast/activitypub/crypto"
+	"github.com/owncast/owncast/core/data"
+	"github.com/pkg/errors"
+	log "github.com/sirupsen/logrus"
+)
+
+// Resolve will translate a raw ActivityPub payload and fire the callback associated with that activity type.
+func Resolve(c context.Context, data []byte, callbacks ...interface{}) error {
+	jsonResolver, err := streams.NewJSONResolver(callbacks...)
+	if err != nil {
+		// Something in the setup was wrong. For example, a callback has an
+		// unsupported signature and would never be called
+		return err
+	}
+
+	var jsonMap map[string]interface{}
+	if err = json.Unmarshal(data, &jsonMap); err != nil {
+		return err
+	}
+
+	log.Debugln("Resolving payload...", string(data))
+
+	// The createCallback function will be called.
+	err = jsonResolver.Resolve(c, jsonMap)
+	if err != nil && !streams.IsUnmatchedErr(err) {
+		// Something went wrong
+		return err
+	} else if streams.IsUnmatchedErr(err) {
+		// Everything went right but the callback didn't match or the ActivityStreams
+		// type is one that wasn't code generated.
+		log.Debugln("No match: ", err)
+	}
+
+	return nil
+}
+
+// ResolveIRI will resolve an IRI ahd call the correct callback for the resolved type.
+func ResolveIRI(c context.Context, iri string, callbacks ...interface{}) error {
+	log.Debugln("Resolving", iri)
+
+	req, _ := http.NewRequest("GET", iri, nil)
+
+	actor := apmodels.MakeLocalIRIForAccount(data.GetDefaultFederationUsername())
+	if err := crypto.SignRequest(req, nil, actor); err != nil {
+		return err
+	}
+
+	response, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+
+	defer response.Body.Close()
+
+	data, err := ioutil.ReadAll(response.Body)
+	if err != nil {
+		return err
+	}
+
+	// fmt.Println(string(data))
+	return Resolve(c, data, callbacks...)
+}
+
+// GetResolvedActorFromActorProperty resolve an actor property to a fully populated person.
+func GetResolvedActorFromActorProperty(actor vocab.ActivityStreamsActorProperty) (apmodels.ActivityPubActor, error) {
+	var err error
+	var apActor apmodels.ActivityPubActor
+
+	personCallback := func(c context.Context, person vocab.ActivityStreamsPerson) error {
+		apActor = apmodels.MakeActorFromPerson(person)
+		return nil
+	}
+
+	serviceCallback := func(c context.Context, s vocab.ActivityStreamsService) error {
+		apActor = apmodels.MakeActorFromService(s)
+		return nil
+	}
+
+	for iter := actor.Begin(); iter != actor.End(); iter = iter.Next() {
+		if iter.IsIRI() {
+			iri := iter.GetIRI()
+			if e := ResolveIRI(context.Background(), iri.String(), personCallback, serviceCallback); e != nil {
+				err = e
+			}
+		} else if iter.IsActivityStreamsPerson() {
+			person := iter.GetActivityStreamsPerson()
+			apActor = apmodels.MakeActorFromPerson(person)
+		}
+	}
+
+	return apActor, errors.Wrap(err, "unable to resolve actor from actor property")
+}
+
+// GetResolvedActorFromIRI will resolve an IRI string to a fully populated actor.
+func GetResolvedActorFromIRI(personOrServiceIRI string) (apmodels.ActivityPubActor, error) {
+	var err error
+	var apActor apmodels.ActivityPubActor
+
+	personCallback := func(c context.Context, person vocab.ActivityStreamsPerson) error {
+		apActor = apmodels.MakeActorFromPerson(person)
+		return nil
+	}
+
+	serviceCallback := func(c context.Context, s vocab.ActivityStreamsService) error {
+		apActor = apmodels.MakeActorFromService(s)
+		return nil
+	}
+
+	if e := ResolveIRI(context.Background(), personOrServiceIRI, personCallback, serviceCallback); e != nil {
+		err = e
+	}
+
+	return apActor, errors.Wrap(err, "unable to resolve actor from IRI string: "+personOrServiceIRI)
+}

activitypub/router.go

@@ -0,0 +1,35 @@
+package activitypub
+
+import (
+	"net/http"
+
+	"github.com/owncast/owncast/activitypub/controllers"
+	"github.com/owncast/owncast/router/middleware"
+)
+
+// StartRouter will start the federation specific http router.
+func StartRouter() {
+	// WebFinger
+	http.HandleFunc("/.well-known/webfinger", controllers.WebfingerHandler)
+
+	// Host Metadata
+	http.HandleFunc("/.well-known/host-meta", controllers.HostMetaController)
+
+	// Nodeinfo v1
+	http.HandleFunc("/.well-known/nodeinfo", controllers.NodeInfoController)
+
+	// x-nodeinfo v2
+	http.HandleFunc("/.well-known/x-nodeinfo2", controllers.XNodeInfo2Controller)
+
+	// Nodeinfo v2
+	http.HandleFunc("/nodeinfo/2.0", controllers.NodeInfoV2Controller)
+
+	// Instance details
+	http.HandleFunc("/api/v1/instance", controllers.InstanceV1Controller)
+
+	// Single ActivityPub Actor
+	http.HandleFunc("/federation/user/", middleware.RequireActivityPubOrRedirect(controllers.ActorHandler))
+
+	// Single AP object
+	http.HandleFunc("/federation/", middleware.RequireActivityPubOrRedirect(controllers.ObjectHandler))
+}

activitypub/workerpool/outbound.go

@@ -0,0 +1,66 @@
+package workerpool
+
+import (
+	"net/http"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	// ActivityPubWorkerPoolSize defines the number of concurrent HTTP ActivityPub requests.
+	ActivityPubWorkerPoolSize = 10
+)
+
+// Job struct bundling the ActivityPub and the payload in one struct.
+type Job struct {
+	request *http.Request
+}
+
+var queue chan Job
+
+// InitOutboundWorkerPool starts n go routines that await ActivityPub jobs.
+func InitOutboundWorkerPool() {
+	queue = make(chan Job)
+
+	// start workers
+	for i := 1; i <= ActivityPubWorkerPoolSize; i++ {
+		go worker(i, queue)
+	}
+}
+
+// AddToOutboundQueue will queue up an outbound http request.
+func AddToOutboundQueue(req *http.Request) {
+	log.Tracef("Queued request for ActivityPub destination %s", req.RequestURI)
+	queue <- Job{req}
+}
+
+func worker(workerID int, queue <-chan Job) {
+	log.Debugf("Started ActivityPub worker %d", workerID)
+
+	for job := range queue {
+		if err := sendActivityPubMessageToInbox(job); err != nil {
+			log.Errorf("ActivityPub destination %s failed to send Error: %s", job.request.RequestURI, err)
+		}
+		log.Tracef("Done with ActivityPub destination %s using worker %d", job.request.RequestURI, workerID)
+	}
+}
+
+func sendActivityPubMessageToInbox(job Job) error {
+	// req, err := http.NewRequest("POST", job.inbox.String(), bytes.NewReader(job.payload))
+	// if err != nil {
+	// 	return err
+	// }
+
+	// req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{}
+
+	resp, err := client.Do(job.request)
+	if err != nil {
+		return err
+	}
+
+	defer resp.Body.Close()
+
+	return nil
+}

config/defaults.go

@@ -24,6 +24,9 @@ type Defaults struct {
 	SegmentLengthSeconds int
 	SegmentsInPlaylist   int
 	StreamVariants       []models.StreamOutputVariant
+
+	FederationUsername      string
+	FederationGoLiveMessage string
 }
 
 // GetDefaults will return default configuration values.
@@ -59,5 +62,8 @@ func GetDefaults() Defaults {
 				CPUUsageLevel:      2,
 			},
 		},
+
+		FederationUsername:      "streamer",
+		FederationGoLiveMessage: "I've gone live!",
 	}
 }

controllers/admin/config.go

@@ -11,6 +11,7 @@ import (
 	"reflect"
 	"strings"
 
+	"github.com/owncast/owncast/activitypub/outbox"
 	"github.com/owncast/owncast/controllers"
 	"github.com/owncast/owncast/core/chat"
 	"github.com/owncast/owncast/core/data"
@@ -46,6 +47,12 @@ func SetTags(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
 	controllers.WriteSimpleResponse(w, true, "changed")
 }
 
@@ -99,6 +106,12 @@ func SetServerName(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
 	controllers.WriteSimpleResponse(w, true, "changed")
 }
 
@@ -118,6 +131,12 @@ func SetServerSummary(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
 	controllers.WriteSimpleResponse(w, true, "changed")
 }
 
@@ -233,6 +252,12 @@ func SetLogo(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
 	controllers.WriteSimpleResponse(w, true, "changed")
 }
 
@@ -504,6 +529,12 @@ func SetSocialHandles(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
 	controllers.WriteSimpleResponse(w, true, "social handles updated")
 }
 

controllers/admin/federation.go

@@ -0,0 +1,171 @@
+package admin
+
+import (
+	"net/http"
+
+	"github.com/owncast/owncast/activitypub"
+	"github.com/owncast/owncast/activitypub/outbox"
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/controllers"
+	"github.com/owncast/owncast/core/data"
+)
+
+// SendFederatedMessage will send a manual message to the fediverse.
+func SendFederatedMessage(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	message, ok := configValue.Value.(string)
+	if !ok {
+		controllers.WriteSimpleResponse(w, false, "unable to send message")
+	}
+
+	if err := activitypub.SendPublicFederatedMessage(message); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "sent")
+}
+
+// SetFederationEnabled will set if Federation features are enabled.
+func SetFederationEnabled(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetFederationEnabled(configValue.Value.(bool)); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+	controllers.WriteSimpleResponse(w, true, "federation features saved")
+}
+
+// SetFederationActivityPrivate will set if Federation features are private to followers.
+func SetFederationActivityPrivate(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetFederationIsPrivate(configValue.Value.(bool)); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	// Update Fediverse followers about this change.
+	if err := outbox.UpdateFollowersWithAccountUpdates(); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "federation private saved")
+}
+
+// SetFederationShowEngagement will set if Fedivese engagement shows in chat.
+func SetFederationShowEngagement(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetFederationShowEngagement(configValue.Value.(bool)); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+	controllers.WriteSimpleResponse(w, true, "federation show engagement saved")
+}
+
+// SetFederationUsername will set the local actor username used for federation activities.
+func SetFederationUsername(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetFederationUsername(configValue.Value.(string)); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "username saved")
+}
+
+// SetFederationGoLiveMessage will set the federated message sent when the streamer goes live.
+func SetFederationGoLiveMessage(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValue, success := getValueFromRequest(w, r)
+	if !success {
+		return
+	}
+
+	if err := data.SetFederationGoLiveMessage(configValue.Value.(string)); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "message saved")
+}
+
+// SetFederationBlockDomains saves a list of domains to block on the Fediverse.
+func SetFederationBlockDomains(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	configValues, success := getValuesFromRequest(w, r)
+	if !success {
+		controllers.WriteSimpleResponse(w, false, "unable to handle provided domains")
+		return
+	}
+
+	domainStrings := make([]string, 0)
+	for _, domain := range configValues {
+		domainStrings = append(domainStrings, domain.Value.(string))
+	}
+
+	if err := data.SetBlockedFederatedDomains(domainStrings); err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteSimpleResponse(w, true, "saved")
+}
+
+// GetFederatedActions will return the saved list of accepted inbound
+// federated activities.
+func GetFederatedActions(w http.ResponseWriter, r *http.Request) {
+	activities, err := persistence.GetInboundActivities(100, 0)
+	if err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteResponse(w, activities)
+}

controllers/admin/followers.go

@@ -0,0 +1,82 @@
+package admin
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/owncast/owncast/activitypub/persistence"
+	"github.com/owncast/owncast/activitypub/requests"
+	"github.com/owncast/owncast/controllers"
+	"github.com/owncast/owncast/core/data"
+)
+
+// ApproveFollower will approve a federated follow request.
+func ApproveFollower(w http.ResponseWriter, r *http.Request) {
+	if !requirePOST(w, r) {
+		return
+	}
+
+	type approveFollowerRequest struct {
+		ActorIRI string `json:"actorIRI"`
+		Approved bool   `json:"approved"`
+	}
+
+	decoder := json.NewDecoder(r.Body)
+	var approval approveFollowerRequest
+	if err := decoder.Decode(&approval); err != nil {
+		controllers.WriteSimpleResponse(w, false, "unable to handle follower state with provided values")
+		return
+	}
+
+	if approval.Approved {
+		// Approve a follower
+		if err := persistence.ApprovePreviousFollowRequest(approval.ActorIRI); err != nil {
+			controllers.WriteSimpleResponse(w, false, err.Error())
+			return
+		}
+
+		localAccountName := data.GetDefaultFederationUsername()
+
+		follower, err := persistence.GetFollower(approval.ActorIRI)
+		if err != nil {
+			controllers.WriteSimpleResponse(w, false, err.Error())
+			return
+		}
+
+		// Send the approval to the follow requestor.
+		if err := requests.SendFollowAccept(follower.Inbox, follower.FollowRequestIri, localAccountName); err != nil {
+			controllers.WriteSimpleResponse(w, false, err.Error())
+			return
+		}
+	} else {
+		// Remove/block a follower
+		if err := persistence.BlockOrRejectFollower(approval.ActorIRI); err != nil {
+			controllers.WriteSimpleResponse(w, false, err.Error())
+			return
+		}
+	}
+
+	controllers.WriteSimpleResponse(w, true, "follower updated")
+}
+
+// GetPendingFollowRequests will return a list of pending follow requests.
+func GetPendingFollowRequests(w http.ResponseWriter, r *http.Request) {
+	requests, err := persistence.GetPendingFollowRequests()
+	if err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteResponse(w, requests)
+}
+
+// GetBlockedAndRejectedFollowers will return blocked and rejected followers.
+func GetBlockedAndRejectedFollowers(w http.ResponseWriter, r *http.Request) {
+	rejections, err := persistence.GetBlockedAndRejectedFollowers()
+	if err != nil {
+		controllers.WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	controllers.WriteResponse(w, rejections)
+}

controllers/admin/serverConfig.go

@@ -66,6 +66,14 @@ func GetServerConfig(w http.ResponseWriter, r *http.Request) {
 		VideoCodec:         data.GetVideoCodec(),
 		ForbiddenUsernames: usernameBlocklist,
 		SuggestedUsernames: usernameSuggestions,
+		Federation: federationConfigResponse{
+			Enabled:        data.GetFederationEnabled(),
+			IsPrivate:      data.GetFederationIsPrivate(),
+			Username:       data.GetFederationUsername(),
+			GoLiveMessage:  data.GetFederationGoLiveMessage(),
+			ShowEngagement: data.GetFederationShowEngagement(),
+			BlockedDomains: data.GetBlockedFederatedDomains(),
+		},
 	}
 
 	w.Header().Set("Content-Type", "application/json")
@@ -77,21 +85,22 @@ func GetServerConfig(w http.ResponseWriter, r *http.Request) {
 }
 
 type serverConfigAdminResponse struct {
-	InstanceDetails    webConfigResponse       `json:"instanceDetails"`
-	FFmpegPath         string                  `json:"ffmpegPath"`
-	StreamKey          string                  `json:"streamKey"`
-	WebServerPort      int                     `json:"webServerPort"`
-	WebServerIP        string                  `json:"webServerIP"`
-	RTMPServerPort     int                     `json:"rtmpServerPort"`
-	S3                 models.S3               `json:"s3"`
-	VideoSettings      videoSettings           `json:"videoSettings"`
-	YP                 yp                      `json:"yp"`
-	ChatDisabled       bool                    `json:"chatDisabled"`
-	ExternalActions    []models.ExternalAction `json:"externalActions"`
-	SupportedCodecs    []string                `json:"supportedCodecs"`
-	VideoCodec         string                  `json:"videoCodec"`
-	ForbiddenUsernames []string                `json:"forbiddenUsernames"`
-	SuggestedUsernames []string                `json:"suggestedUsernames"`
+	InstanceDetails    webConfigResponse        `json:"instanceDetails"`
+	FFmpegPath         string                   `json:"ffmpegPath"`
+	StreamKey          string                   `json:"streamKey"`
+	WebServerPort      int                      `json:"webServerPort"`
+	WebServerIP        string                   `json:"webServerIP"`
+	RTMPServerPort     int                      `json:"rtmpServerPort"`
+	S3                 models.S3                `json:"s3"`
+	VideoSettings      videoSettings            `json:"videoSettings"`
+	YP                 yp                       `json:"yp"`
+	ChatDisabled       bool                     `json:"chatDisabled"`
+	ExternalActions    []models.ExternalAction  `json:"externalActions"`
+	SupportedCodecs    []string                 `json:"supportedCodecs"`
+	VideoCodec         string                   `json:"videoCodec"`
+	ForbiddenUsernames []string                 `json:"forbiddenUsernames"`
+	Federation         federationConfigResponse `json:"federation"`
+	SuggestedUsernames []string                 `json:"suggestedUsernames"`
 }
 
 type videoSettings struct {
@@ -118,3 +127,12 @@ type yp struct {
 	InstanceURL  string `json:"instanceUrl"` // The public URL the directory should link to
 	YPServiceURL string `json:"-"`           // The base URL to the YP API to register with (optional)
 }
+
+type federationConfigResponse struct {
+	Enabled        bool     `json:"enabled"`
+	IsPrivate      bool     `json:"isPrivate"`
+	Username       string   `json:"username"`
+	GoLiveMessage  string   `json:"goLiveMessage"`
+	ShowEngagement bool     `json:"showEngagement"`
+	BlockedDomains []string `json:"blockedDomains"`
+}

controllers/config.go

@@ -2,8 +2,11 @@ package controllers
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
+	"net/url"
 
+	"github.com/owncast/owncast/activitypub"
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/core/data"
 	"github.com/owncast/owncast/models"
@@ -12,19 +15,26 @@ import (
 )
 
 type webConfigResponse struct {
-	Name                 string                  `json:"name"`
-	Summary              string                  `json:"summary"`
-	Logo                 string                  `json:"logo"`
-	Tags                 []string                `json:"tags"`
-	Version              string                  `json:"version"`
-	NSFW                 bool                    `json:"nsfw"`
-	ExtraPageContent     string                  `json:"extraPageContent"`
-	StreamTitle          string                  `json:"streamTitle,omitempty"` // What's going on with the current stream
-	SocialHandles        []models.SocialHandle   `json:"socialHandles"`
-	ChatDisabled         bool                    `json:"chatDisabled"`
-	ExternalActions      []models.ExternalAction `json:"externalActions"`
-	CustomStyles         string                  `json:"customStyles"`
-	MaxSocketPayloadSize int                     `json:"maxSocketPayloadSize"`
+	Name                 string                   `json:"name"`
+	Summary              string                   `json:"summary"`
+	Logo                 string                   `json:"logo"`
+	Tags                 []string                 `json:"tags"`
+	Version              string                   `json:"version"`
+	NSFW                 bool                     `json:"nsfw"`
+	ExtraPageContent     string                   `json:"extraPageContent"`
+	StreamTitle          string                   `json:"streamTitle,omitempty"` // What's going on with the current stream
+	SocialHandles        []models.SocialHandle    `json:"socialHandles"`
+	ChatDisabled         bool                     `json:"chatDisabled"`
+	ExternalActions      []models.ExternalAction  `json:"externalActions"`
+	CustomStyles         string                   `json:"customStyles"`
+	MaxSocketPayloadSize int                      `json:"maxSocketPayloadSize"`
+	Federation           federationConfigResponse `json:"federation"`
+}
+
+type federationConfigResponse struct {
+	Enabled       bool   `json:"enabled"`
+	Account       string `json:"account,omitempty"`
+	FollowerCount int    `json:"followerCount,omitempty"`
 }
 
 // GetWebConfig gets the status of the server.
@@ -46,6 +56,21 @@ func GetWebConfig(w http.ResponseWriter, r *http.Request) {
 	serverSummary := data.GetServerSummary()
 	serverSummary = utils.RenderPageContentMarkdown(serverSummary)
 
+	var federationResponse federationConfigResponse
+	federationEnabled := data.GetFederationEnabled()
+
+	followerCount, _ := activitypub.GetFollowerCount()
+	if federationEnabled {
+		serverURLString := data.GetServerURL()
+		serverURL, _ := url.Parse(serverURLString)
+		account := fmt.Sprintf("%s@%s", data.GetDefaultFederationUsername(), serverURL.Host)
+		federationResponse = federationConfigResponse{
+			Enabled:       federationEnabled,
+			FollowerCount: int(followerCount),
+			Account:       account,
+		}
+	}
+
 	configuration := webConfigResponse{
 		Name:                 data.GetServerName(),
 		Summary:              serverSummary,
@@ -60,6 +85,7 @@ func GetWebConfig(w http.ResponseWriter, r *http.Request) {
 		ExternalActions:      data.GetExternalActions(),
 		CustomStyles:         data.GetCustomStyles(),
 		MaxSocketPayloadSize: config.MaxSocketPayloadSize,
+		Federation:           federationResponse,
 	}
 
 	if err := json.NewEncoder(w).Encode(configuration); err != nil {

controllers/followers.go

@@ -0,0 +1,18 @@
+package controllers
+
+import (
+	"net/http"
+
+	"github.com/owncast/owncast/activitypub/persistence"
+)
+
+// GetFollowers will handle an API request to fetch the list of followers (non-activitypub response).
+func GetFollowers(w http.ResponseWriter, r *http.Request) {
+	followers, err := persistence.GetFederationFollowers(-1, 0)
+	if err != nil {
+		WriteSimpleResponse(w, false, "unable to fetch followers")
+		return
+	}
+
+	WriteResponse(w, followers)
+}

controllers/index.go

@@ -35,6 +35,15 @@ type MetadataPage struct {
 // IndexHandler handles the default index route.
 func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	middleware.EnableCors(w)
+
+	// Treat recordings and schedule as index requests
+	pathComponents := strings.Split(r.URL.Path, "/")
+	pathRequest := pathComponents[1]
+
+	if pathRequest == "recordings" || pathRequest == "schedule" {
+		r.URL.Path = "index.html"
+	}
+
 	isIndexRequest := r.URL.Path == "/" || filepath.Base(r.URL.Path) == "index.html" || filepath.Base(r.URL.Path) == ""
 
 	// For search engine bots and social scrapers return a special
@@ -91,11 +100,11 @@ func handleScraperMetadataPage(w http.ResponseWriter, r *http.Request) {
 
 	fullURL, err := url.Parse(fmt.Sprintf("%s://%s%s", scheme, r.Host, r.URL.Path))
 	if err != nil {
-		log.Panicln(err)
+		log.Errorln(err)
 	}
 	imageURL, err := url.Parse(fmt.Sprintf("%s://%s%s", scheme, r.Host, "/logo/external"))
 	if err != nil {
-		log.Panicln(err)
+		log.Errorln(err)
 	}
 
 	status := core.GetStatus()
@@ -128,6 +137,6 @@ func handleScraperMetadataPage(w http.ResponseWriter, r *http.Request) {
 
 	w.Header().Set("Content-Type", "text/html")
 	if err := tmpl.Execute(w, metadata); err != nil {
-		log.Panicln(err)
+		log.Errorln(err)
 	}
 }

controllers/remoteFollow.go

@@ -0,0 +1,100 @@
+package controllers
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/owncast/owncast/core/data"
+)
+
+// RemoteFollow handles a request to begin the remote follow redirect flow.
+func RemoteFollow(w http.ResponseWriter, r *http.Request) {
+	type followRequest struct {
+		Account string `json:"account"`
+	}
+
+	type followResponse struct {
+		RedirectURL string `json:"redirectUrl"`
+	}
+
+	var request followRequest
+	decoder := json.NewDecoder(r.Body)
+	if err := decoder.Decode(&request); err != nil {
+		WriteSimpleResponse(w, false, "unable to parse request")
+		return
+	}
+
+	if request.Account == "" {
+		WriteSimpleResponse(w, false, "Remote Fediverse account is required to follow.")
+		return
+	}
+
+	localActorPath, _ := url.Parse(data.GetServerURL())
+	localActorPath.Path = fmt.Sprintf("/federation/user/%s", data.GetDefaultFederationUsername())
+	var template string
+	links, err := getWebfingerLinks(request.Account)
+	if err != nil {
+		WriteSimpleResponse(w, false, err.Error())
+		return
+	}
+
+	// Acquire the remote follow redirect template.
+	for _, link := range links {
+		for k, v := range link {
+			if k == "rel" && v == "http://ostatus.org/schema/1.0/subscribe" && link["template"] != nil {
+				template = link["template"].(string)
+			}
+		}
+	}
+
+	if localActorPath.String() == "" || template == "" {
+		WriteSimpleResponse(w, false, "unable to determine remote follow information for "+request.Account)
+		return
+	}
+
+	redirectURL := strings.Replace(template, "{uri}", localActorPath.String(), 1)
+	response := followResponse{
+		RedirectURL: redirectURL,
+	}
+
+	WriteResponse(w, response)
+}
+
+func getWebfingerLinks(account string) ([]map[string]interface{}, error) {
+	type webfingerResponse struct {
+		Links []map[string]interface{} `json:"links"`
+	}
+
+	account = strings.TrimLeft(account, "@") // remove any leading @
+	accountComponents := strings.Split(account, "@")
+	fediverseServer := accountComponents[1]
+
+	// HTTPS is required.
+	requestURL, err := url.Parse("https://" + fediverseServer)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse fediverse server host %s", fediverseServer)
+	}
+
+	requestURL.Path = "/.well-known/webfinger"
+	query := requestURL.Query()
+	query.Add("resource", fmt.Sprintf("acct:%s", account))
+	requestURL.RawQuery = query.Encode()
+
+	response, err := http.DefaultClient.Get(requestURL.String())
+	if err != nil {
+		return nil, err
+	}
+
+	defer response.Body.Close()
+
+	var links webfingerResponse
+	decoder := json.NewDecoder(response.Body)
+	if err := decoder.Decode(&links); err != nil {
+		return nil, err
+	}
+
+	return links.Links, nil
+}

core/chat/chat.go

@@ -78,12 +78,39 @@ func SendSystemMessage(text string, ephemeral bool) error {
 	}
 
 	if !ephemeral {
-		saveEvent(message.ID, "system", message.Body, message.GetMessageType(), nil, message.Timestamp)
+		saveEvent(message.ID, nil, message.Body, message.GetMessageType(), nil, message.Timestamp, nil, nil, nil, nil)
 	}
 
 	return nil
 }
 
+// SendFediverseAction will send a message indicating some Fediverse engagement took place.
+func SendFediverseAction(eventType string, userAccountName string, image *string, body string, link string) error {
+	message := events.FediverseEngagementEvent{
+		Event: events.Event{
+			Type: eventType,
+		},
+		MessageEvent: events.MessageEvent{
+			Body: body,
+		},
+		UserAccountName: userAccountName,
+		Image:           image,
+		Link:            link,
+	}
+
+	message.SetDefaults()
+	message.RenderBody()
+
+	if err := Broadcast(&message); err != nil {
+		log.Errorln("error sending system message", err)
+		return err
+	}
+
+	saveFederatedAction(message)
+
+	return nil
+}
+
 // SendSystemAction will send a system action string as an action event to all clients.
 func SendSystemAction(text string, ephemeral bool) error {
 	message := events.ActionEvent{
@@ -100,7 +127,7 @@ func SendSystemAction(text string, ephemeral bool) error {
 	}
 
 	if !ephemeral {
-		saveEvent(message.ID, "action", message.Body, message.GetMessageType(), nil, message.Timestamp)
+		saveEvent(message.ID, nil, message.Body, message.GetMessageType(), nil, message.Timestamp, nil, nil, nil, nil)
 	}
 
 	return nil

core/chat/events/eventtype.go

@@ -34,4 +34,10 @@ const (
 	ErrorMaxConnectionsExceeded EventType = "ERROR_MAX_CONNECTIONS_EXCEEDED"
 	// ErrorUserDisabled is an error returned when the connecting user has been previously banned/disabled.
 	ErrorUserDisabled EventType = "ERROR_USER_DISABLED"
+	// FediverseEngagementFollow is an event representing a follow action that took place on the fediverse.
+	FediverseEngagementFollow EventType = "FEDIVERSE_ENGAGEMENT_FOLLOW"
+	// FediverseEngagementLike is an event representing a like action that took place on the fediverse.
+	FediverseEngagementLike EventType = "FEDIVERSE_ENGAGEMENT_LIKE"
+	// FediverseEngagementRepost is an event representing a re-post action that took place on the fediverse.
+	FediverseEngagementRepost EventType = "FEDIVERSE_ENGAGEMENT_REPOST"
 )

core/chat/events/fediverseEngagementEvent.go

@@ -0,0 +1,32 @@
+package events
+
+import "github.com/owncast/owncast/core/data"
+
+// FediverseEngagementEvent is a message displayed in chat on representing an action on the Fediverse.
+type FediverseEngagementEvent struct {
+	Event
+	MessageEvent
+	Image           *string `json:"image"`
+	Link            string  `json:"link"`
+	UserAccountName string  `json:"title"`
+}
+
+// GetBroadcastPayload will return the object to send to all chat users.
+func (e *FediverseEngagementEvent) GetBroadcastPayload() EventPayload {
+	return EventPayload{
+		"id":        e.ID,
+		"timestamp": e.Timestamp,
+		"body":      e.Body,
+		"image":     e.Image,
+		"type":      e.Event.Type,
+		"title":     e.UserAccountName,
+		"user": EventPayload{
+			"displayName": data.GetServerName(),
+		},
+	}
+}
+
+// GetMessageType will return the event type for this message.
+func (e *FediverseEngagementEvent) GetMessageType() EventType {
+	return e.Event.Type
+}

core/chat/persistence.go

@@ -34,17 +34,19 @@ func setupPersistence() {
 
 // SaveUserMessage will save a single chat event to the messages database.
 func SaveUserMessage(event events.UserMessageEvent) {
-	saveEvent(event.ID, event.User.ID, event.Body, event.Type, event.HiddenAt, event.Timestamp)
+	saveEvent(event.ID, &event.User.ID, event.Body, event.Type, event.HiddenAt, event.Timestamp, nil, nil, nil, nil)
 }
 
-func saveEvent(id string, userID string, body string, eventType string, hidden *time.Time, timestamp time.Time) {
+func saveFederatedAction(event events.FediverseEngagementEvent) {
+	saveEvent(event.ID, nil, event.Body, event.Type, nil, event.Timestamp, event.Image, &event.Link, &event.UserAccountName, nil)
+}
+
+// nolint: unparam
+func saveEvent(id string, userID *string, body string, eventType string, hidden *time.Time, timestamp time.Time, image *string, link *string, title *string, subtitle *string) {
 	defer func() {
 		_historyCache = nil
 	}()
 
-	_datastore.DbLock.Lock()
-	defer _datastore.DbLock.Unlock()
-
 	tx, err := _datastore.DB.Begin()
 	if err != nil {
 		log.Errorln("error saving", eventType, err)
@@ -53,7 +55,7 @@ func saveEvent(id string, userID string, body string, eventType string, hidden *
 
 	defer tx.Rollback() // nolint
 
-	stmt, err := tx.Prepare("INSERT INTO messages(id, user_id, body, eventType, hidden_at, timestamp) values(?, ?, ?, ?, ?, ?)")
+	stmt, err := tx.Prepare("INSERT INTO messages(id, user_id, body, eventType, hidden_at, timestamp, image, link, title, subtitle) values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
 	if err != nil {
 		log.Errorln("error saving", eventType, err)
 		return
@@ -61,7 +63,7 @@ func saveEvent(id string, userID string, body string, eventType string, hidden *
 
 	defer stmt.Close()
 
-	if _, err = stmt.Exec(id, userID, body, eventType, hidden, timestamp); err != nil {
+	if _, err = stmt.Exec(id, userID, body, eventType, hidden, timestamp, image, link, title, subtitle); err != nil {
 		log.Errorln("error saving", eventType, err)
 		return
 	}
@@ -71,8 +73,134 @@ func saveEvent(id string, userID string, body string, eventType string, hidden *
 	}
 }
 
-func getChat(query string) []events.UserMessageEvent {
-	history := make([]events.UserMessageEvent, 0)
+func makeUserMessageEventFromRowData(row rowData) events.UserMessageEvent {
+	scopes := ""
+	if row.userScopes != nil {
+		scopes = *row.userScopes
+	}
+
+	previousUsernames := []string{}
+	if row.previousUsernames != nil {
+		previousUsernames = strings.Split(*row.previousUsernames, ",")
+	}
+
+	displayName := ""
+	if row.userDisplayName != nil {
+		displayName = *row.userDisplayName
+	}
+
+	displayColor := 0
+	if row.userDisplayColor != nil {
+		displayColor = *row.userDisplayColor
+	}
+
+	createdAt := time.Time{}
+	if row.userCreatedAt != nil {
+		createdAt = *row.userCreatedAt
+	}
+
+	u := user.User{
+		ID:            *row.userID,
+		AccessToken:   "",
+		DisplayName:   displayName,
+		DisplayColor:  displayColor,
+		CreatedAt:     createdAt,
+		DisabledAt:    row.userDisabledAt,
+		NameChangedAt: row.userNameChangedAt,
+		PreviousNames: previousUsernames,
+		Scopes:        strings.Split(scopes, ","),
+	}
+
+	message := events.UserMessageEvent{
+		Event: events.Event{
+			Type:      row.eventType,
+			ID:        row.id,
+			Timestamp: row.timestamp,
+		},
+		UserEvent: events.UserEvent{
+			User:     &u,
+			HiddenAt: row.hiddenAt,
+		},
+		MessageEvent: events.MessageEvent{
+			Body:    row.body,
+			RawBody: row.body,
+		},
+	}
+
+	return message
+}
+
+func makeSystemMessageChatEventFromRowData(row rowData) events.SystemMessageEvent {
+	message := events.SystemMessageEvent{
+		Event: events.Event{
+			Type:      row.eventType,
+			ID:        row.id,
+			Timestamp: row.timestamp,
+		},
+		MessageEvent: events.MessageEvent{
+			Body:    row.body,
+			RawBody: row.body,
+		},
+	}
+	return message
+}
+
+func makeActionMessageChatEventFromRowData(row rowData) events.ActionEvent {
+	message := events.ActionEvent{
+		Event: events.Event{
+			Type:      row.eventType,
+			ID:        row.id,
+			Timestamp: row.timestamp,
+		},
+		MessageEvent: events.MessageEvent{
+			Body:    row.body,
+			RawBody: row.body,
+		},
+	}
+	return message
+}
+
+func makeFederatedActionChatEventFromRowData(row rowData) events.FediverseEngagementEvent {
+	message := events.FediverseEngagementEvent{
+		Event: events.Event{
+			Type:      row.eventType,
+			ID:        row.id,
+			Timestamp: row.timestamp,
+		},
+		MessageEvent: events.MessageEvent{
+			Body:    row.body,
+			RawBody: row.body,
+		},
+		Image:           row.image,
+		Link:            *row.link,
+		UserAccountName: *row.title,
+	}
+	return message
+}
+
+type rowData struct {
+	id        string
+	userID    *string
+	body      string
+	eventType models.EventType
+	hiddenAt  *time.Time
+	timestamp time.Time
+	title     *string
+	subtitle  *string
+	image     *string
+	link      *string
+
+	userDisplayName   *string
+	userDisplayColor  *int
+	userCreatedAt     *time.Time
+	userDisabledAt    *time.Time
+	previousUsernames *string
+	userNameChangedAt *time.Time
+	userScopes        *string
+}
+
+func getChat(query string) []interface{} {
+	history := make([]interface{}, 0)
 	rows, err := _datastore.DB.Query(query)
 	if err != nil || rows.Err() != nil {
 		log.Errorln("error fetching chat history", err)
@@ -81,69 +209,47 @@ func getChat(query string) []events.UserMessageEvent {
 	defer rows.Close()
 
 	for rows.Next() {
-		var id string
-		var userID string
-		var body string
-		var messageType models.EventType
-		var hiddenAt *time.Time
-		var timestamp time.Time
-
-		var userDisplayName *string
-		var userDisplayColor *int
-		var userCreatedAt *time.Time
-		var userDisabledAt *time.Time
-		var previousUsernames *string
-		var userNameChangedAt *time.Time
+		row := rowData{}
 
 		// Convert a database row into a chat event
-		err = rows.Scan(&id, &userID, &body, &messageType, &hiddenAt, &timestamp, &userDisplayName, &userDisplayColor, &userCreatedAt, &userDisabledAt, &previousUsernames, &userNameChangedAt)
-		if err != nil {
+		if err = rows.Scan(
+			&row.id,
+			&row.userID,
+			&row.body,
+			&row.title,
+			&row.subtitle,
+			&row.image,
+			&row.link,
+			&row.eventType,
+			&row.hiddenAt,
+			&row.timestamp,
+			&row.userDisplayName,
+			&row.userDisplayColor,
+			&row.userCreatedAt,
+			&row.userDisabledAt,
+			&row.previousUsernames,
+			&row.userNameChangedAt,
+			&row.userScopes,
+		); err != nil {
 			log.Errorln("There is a problem converting query to chat objects. Please report this:", query)
 			break
 		}
 
-		// System messages and chat actions are special and are not from real users
-		if messageType == events.SystemMessageSent || messageType == events.ChatActionSent {
-			name := "Owncast"
-			userDisplayName = &name
-			color := 200
-			userDisplayColor = &color
-		}
+		var message interface{}
 
-		if previousUsernames == nil {
-			previousUsernames = userDisplayName
-		}
-
-		if userCreatedAt == nil {
-			now := time.Now()
-			userCreatedAt = &now
-		}
-
-		user := user.User{
-			ID:            userID,
-			AccessToken:   "",
-			DisplayName:   *userDisplayName,
-			DisplayColor:  *userDisplayColor,
-			CreatedAt:     *userCreatedAt,
-			DisabledAt:    userDisabledAt,
-			NameChangedAt: userNameChangedAt,
-			PreviousNames: strings.Split(*previousUsernames, ","),
-		}
-
-		message := events.UserMessageEvent{
-			Event: events.Event{
-				Type:      messageType,
-				ID:        id,
-				Timestamp: timestamp,
-			},
-			UserEvent: events.UserEvent{
-				User:     &user,
-				HiddenAt: hiddenAt,
-			},
-			MessageEvent: events.MessageEvent{
-				Body:    body,
-				RawBody: body,
-			},
+		switch row.eventType {
+		case events.MessageSent:
+			message = makeUserMessageEventFromRowData(row)
+		case events.SystemMessageSent:
+			message = makeSystemMessageChatEventFromRowData(row)
+		case events.ChatActionSent:
+			message = makeActionMessageChatEventFromRowData(row)
+		case events.FediverseEngagementFollow:
+			message = makeFederatedActionChatEventFromRowData(row)
+		case events.FediverseEngagementLike:
+			message = makeFederatedActionChatEventFromRowData(row)
+		case events.FediverseEngagementRepost:
+			message = makeFederatedActionChatEventFromRowData(row)
 		}
 
 		history = append(history, message)
@@ -152,16 +258,16 @@ func getChat(query string) []events.UserMessageEvent {
 	return history
 }
 
-var _historyCache *[]events.UserMessageEvent
+var _historyCache *[]interface{}
 
 // GetChatModerationHistory will return all the chat messages suitable for moderation purposes.
-func GetChatModerationHistory() []events.UserMessageEvent {
+func GetChatModerationHistory() []interface{} {
 	if _historyCache != nil {
 		return *_historyCache
 	}
 
 	// Get all messages regardless of visibility
-	query := "SELECT messages.id, user_id, body, eventType, hidden_at, timestamp, display_name, display_color, created_at, disabled_at, previous_names, namechanged_at FROM messages INNER JOIN users ON messages.user_id = users.id ORDER BY timestamp DESC"
+	query := "SELECT messages.id, user_id, body, title, subtitle, image, link, eventType, hidden_at, timestamp, display_name, display_color, created_at, disabled_at, previous_names, namechanged_at, scopes FROM messages INNER JOIN users ON messages.user_id = users.id ORDER BY timestamp DESC"
 	result := getChat(query)
 
 	_historyCache = &result
@@ -170,9 +276,9 @@ func GetChatModerationHistory() []events.UserMessageEvent {
 }
 
 // GetChatHistory will return all the chat messages suitable for returning as user-facing chat history.
-func GetChatHistory() []events.UserMessageEvent {
+func GetChatHistory() []interface{} {
 	// Get all visible messages
-	query := fmt.Sprintf("SELECT messages.id, user_id, body, eventType, hidden_at, timestamp, display_name, display_color, created_at, disabled_at, previous_names, namechanged_at FROM messages, users WHERE messages.user_id = users.id AND hidden_at IS NULL AND disabled_at IS NULL ORDER BY timestamp DESC LIMIT %d", maxBacklogNumber)
+	query := fmt.Sprintf("SELECT messages.id,messages.user_id, messages.body, messages.title, messages.subtitle, messages.image, messages.link, messages.eventType, messages.hidden_at, messages.timestamp, users.display_name, users.display_color, users.created_at, users.disabled_at, users.previous_names, users.namechanged_at, users.scopes FROM messages LEFT JOIN users ON messages.user_id = users.id WHERE hidden_at IS NULL AND disabled_at IS NULL ORDER BY timestamp DESC LIMIT %d", maxBacklogNumber)
 	m := getChat(query)
 
 	// Invert order of messages
@@ -200,7 +306,7 @@ func SetMessageVisibilityForUserID(userID string, visible bool) error {
 	}
 
 	for _, message := range messages {
-		ids = append(ids, message.ID)
+		ids = append(ids, message.(events.Event).ID)
 	}
 
 	// Tell the clients to hide/show these messages.
@@ -250,35 +356,3 @@ func saveMessageVisibility(messageIDs []string, visible bool) error {
 
 	return nil
 }
-
-// Only keep recent messages so we don't keep more chat data than needed
-// for privacy and efficiency reasons.
-func runPruner() {
-	_datastore.DbLock.Lock()
-	defer _datastore.DbLock.Unlock()
-
-	log.Traceln("Removing chat messages older than", maxBacklogHours, "hours")
-
-	deleteStatement := `DELETE FROM messages WHERE timestamp <= datetime('now', 'localtime', ?)`
-	tx, err := _datastore.DB.Begin()
-	if err != nil {
-		log.Debugln(err)
-		return
-	}
-
-	stmt, err := tx.Prepare(deleteStatement)
-	if err != nil {
-		log.Debugln(err)
-		return
-	}
-	defer stmt.Close()
-
-	if _, err = stmt.Exec(fmt.Sprintf("-%d hours", maxBacklogHours)); err != nil {
-		log.Debugln(err)
-		return
-	}
-	if err = tx.Commit(); err != nil {
-		log.Debugln(err)
-		return
-	}
-}

core/chat/pruner.go

@@ -0,0 +1,39 @@
+package chat
+
+import (
+	"fmt"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// Only keep recent messages so we don't keep more chat data than needed
+// for privacy and efficiency reasons.
+func runPruner() {
+	_datastore.DbLock.Lock()
+	defer _datastore.DbLock.Unlock()
+
+	log.Traceln("Removing chat messages older than", maxBacklogHours, "hours")
+
+	deleteStatement := `DELETE FROM messages WHERE timestamp <= datetime('now', 'localtime', ?)`
+	tx, err := _datastore.DB.Begin()
+	if err != nil {
+		log.Debugln(err)
+		return
+	}
+
+	stmt, err := tx.Prepare(deleteStatement)
+	if err != nil {
+		log.Debugln(err)
+		return
+	}
+	defer stmt.Close()
+
+	if _, err = stmt.Exec(fmt.Sprintf("-%d hours", maxBacklogHours)); err != nil {
+		log.Debugln(err)
+		return
+	}
+	if err = tx.Commit(); err != nil {
+		log.Debugln(err)
+		return
+	}
+}

core/data/activitypub.go

@@ -0,0 +1,13 @@
+package data
+
+// GetFederatedInboxMap is a mapping between account names and their outbox.
+func GetFederatedInboxMap() map[string]string {
+	return map[string]string{
+		GetDefaultFederationUsername(): GetDefaultFederationUsername(),
+	}
+}
+
+// GetDefaultFederationUsername will return the username used for sending federation activities.
+func GetDefaultFederationUsername() string {
+	return GetFederationUsername()
+}

core/data/config.go

@@ -13,36 +13,47 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
-const extraContentKey = "extra_page_content"
-const streamTitleKey = "stream_title"
-const streamKeyKey = "stream_key"
-const logoPathKey = "logo_path"
-const serverSummaryKey = "server_summary"
-const serverWelcomeMessageKey = "server_welcome_message"
-const serverNameKey = "server_name"
-const serverURLKey = "server_url"
-const httpPortNumberKey = "http_port_number"
-const httpListenAddressKey = "http_listen_address"
-const rtmpPortNumberKey = "rtmp_port_number"
-const serverMetadataTagsKey = "server_metadata_tags"
-const directoryEnabledKey = "directory_enabled"
-const directoryRegistrationKeyKey = "directory_registration_key"
-const socialHandlesKey = "social_handles"
-const peakViewersSessionKey = "peak_viewers_session"
-const peakViewersOverallKey = "peak_viewers_overall"
-const lastDisconnectTimeKey = "last_disconnect_time"
-const ffmpegPathKey = "ffmpeg_path"
-const nsfwKey = "nsfw"
-const s3StorageEnabledKey = "s3_storage_enabled"
-const s3StorageConfigKey = "s3_storage_config"
-const videoLatencyLevel = "video_latency_level"
-const videoStreamOutputVariantsKey = "video_stream_output_variants"
-const chatDisabledKey = "chat_disabled"
-const externalActionsKey = "external_actions"
-const customStylesKey = "custom_styles"
-const videoCodecKey = "video_codec"
-const blockedUsernamesKey = "blocked_usernames"
-const suggestedUsernamesKey = "suggested_usernames"
+const (
+	extraContentKey              = "extra_page_content"
+	streamTitleKey               = "stream_title"
+	streamKeyKey                 = "stream_key"
+	logoPathKey                  = "logo_path"
+	serverSummaryKey             = "server_summary"
+	serverWelcomeMessageKey      = "server_welcome_message"
+	serverNameKey                = "server_name"
+	serverURLKey                 = "server_url"
+	httpPortNumberKey            = "http_port_number"
+	httpListenAddressKey         = "http_listen_address"
+	rtmpPortNumberKey            = "rtmp_port_number"
+	serverMetadataTagsKey        = "server_metadata_tags"
+	directoryEnabledKey          = "directory_enabled"
+	directoryRegistrationKeyKey  = "directory_registration_key"
+	socialHandlesKey             = "social_handles"
+	peakViewersSessionKey        = "peak_viewers_session"
+	peakViewersOverallKey        = "peak_viewers_overall"
+	lastDisconnectTimeKey        = "last_disconnect_time"
+	ffmpegPathKey                = "ffmpeg_path"
+	nsfwKey                      = "nsfw"
+	s3StorageEnabledKey          = "s3_storage_enabled"
+	s3StorageConfigKey           = "s3_storage_config"
+	videoLatencyLevel            = "video_latency_level"
+	videoStreamOutputVariantsKey = "video_stream_output_variants"
+	chatDisabledKey              = "chat_disabled"
+	externalActionsKey           = "external_actions"
+	customStylesKey              = "custom_styles"
+	videoCodecKey                = "video_codec"
+	blockedUsernamesKey          = "blocked_usernames"
+	publicKeyKey                 = "public_key"
+	privateKeyKey                = "private_key"
+	serverInitDateKey            = "server_init_date"
+	federationEnabledKey         = "federation_enabled"
+	federationUsernameKey        = "federation_username"
+	federationPrivateKey         = "federation_private"
+	federationGoLiveMessageKey   = "federation_go_live_message"
+	federationShowEngagementKey  = "federation_show_engagement"
+	federationBlockedDomainsKey  = "federation_blocked_domains"
+	suggestedUsernamesKey        = "suggested_usernames"
+)
 
 // GetExtraPageBodyContent will return the user-supplied body content.
 func GetExtraPageBodyContent() string {
@@ -295,7 +306,7 @@ func GetSocialHandles() []models.SocialHandle {
 
 // SetSocialHandles will set the external social links.
 func SetSocialHandles(socialHandles []models.SocialHandle) error {
-	var configEntry = ConfigEntry{Key: socialHandlesKey, Value: socialHandles}
+	configEntry := ConfigEntry{Key: socialHandlesKey, Value: socialHandles}
 	return _datastore.Save(configEntry)
 }
 
@@ -350,7 +361,7 @@ func GetLastDisconnectTime() (*utils.NullTime, error) {
 // SetLastDisconnectTime will set the time the last stream ended.
 func SetLastDisconnectTime(disconnectTime time.Time) error {
 	savedDisconnectTime := utils.NullTime{Time: disconnectTime, Valid: true}
-	var configEntry = ConfigEntry{Key: lastDisconnectTimeKey, Value: savedDisconnectTime}
+	configEntry := ConfigEntry{Key: lastDisconnectTimeKey, Value: savedDisconnectTime}
 	return _datastore.Save(configEntry)
 }
 
@@ -399,7 +410,7 @@ func GetS3Config() models.S3 {
 
 // SetS3Config will set the external storage configuration.
 func SetS3Config(config models.S3) error {
-	var configEntry = ConfigEntry{Key: s3StorageConfigKey, Value: config}
+	configEntry := ConfigEntry{Key: s3StorageConfigKey, Value: config}
 	return _datastore.Save(configEntry)
 }
 
@@ -457,7 +468,7 @@ func GetStreamOutputVariants() []models.StreamOutputVariant {
 
 // SetStreamOutputVariants will set the stream output variants.
 func SetStreamOutputVariants(variants []models.StreamOutputVariant) error {
-	var configEntry = ConfigEntry{Key: videoStreamOutputVariantsKey, Value: variants}
+	configEntry := ConfigEntry{Key: videoStreamOutputVariantsKey, Value: variants}
 	return _datastore.Save(configEntry)
 }
 
@@ -493,7 +504,7 @@ func GetExternalActions() []models.ExternalAction {
 
 // SetExternalActions will save external actions.
 func SetExternalActions(actions []models.ExternalAction) error {
-	var configEntry = ConfigEntry{Key: externalActionsKey, Value: actions}
+	configEntry := ConfigEntry{Key: externalActionsKey, Value: actions}
 	return _datastore.Save(configEntry)
 }
 
@@ -583,7 +594,6 @@ func FindHighestVideoQualityIndex(qualities []models.StreamOutputVariant) int {
 // GetForbiddenUsernameList will return the blocked usernames as a comma separated string.
 func GetForbiddenUsernameList() []string {
 	usernameString, err := _datastore.GetString(blockedUsernamesKey)
-
 	if err != nil {
 		return config.DefaultForbiddenUsernames
 	}
@@ -622,3 +632,125 @@ func SetSuggestedUsernamesList(usernames []string) error {
 	usernameListString := strings.Join(usernames, ",")
 	return _datastore.SetString(suggestedUsernamesKey, usernameListString)
 }
+
+// GetServerInitTime will return when the server was first setup.
+func GetServerInitTime() (*utils.NullTime, error) {
+	var t utils.NullTime
+
+	configEntry, err := _datastore.Get(serverInitDateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := configEntry.getObject(&t); err != nil {
+		return nil, err
+	}
+
+	if !t.Valid {
+		return nil, err
+	}
+
+	return &t, nil
+}
+
+// SetServerInitTime will set when the server was first created.
+func SetServerInitTime(t time.Time) error {
+	nt := utils.NullTime{Time: t, Valid: true}
+	configEntry := ConfigEntry{Key: serverInitDateKey, Value: nt}
+	return _datastore.Save(configEntry)
+}
+
+// SetFederationEnabled will enable federation if set to true.
+func SetFederationEnabled(enabled bool) error {
+	return _datastore.SetBool(federationEnabledKey, enabled)
+}
+
+// GetFederationEnabled will return if federation is enabled.
+func GetFederationEnabled() bool {
+	enabled, err := _datastore.GetBool(federationEnabledKey)
+	if err == nil {
+		return enabled
+	}
+
+	return false
+}
+
+// SetFederationUsername will set the username used in federated activities.
+func SetFederationUsername(username string) error {
+	return _datastore.SetString(federationUsernameKey, username)
+}
+
+// GetFederationUsername will return the username used in federated activities.
+func GetFederationUsername() string {
+	username, err := _datastore.GetString(federationUsernameKey)
+	if username == "" || err != nil {
+		return config.GetDefaults().FederationUsername
+	}
+
+	return username
+}
+
+// SetFederationGoLiveMessage will set the message sent when going live.
+func SetFederationGoLiveMessage(message string) error {
+	return _datastore.SetString(federationGoLiveMessageKey, message)
+}
+
+// GetFederationGoLiveMessage will return the message sent when going live.
+func GetFederationGoLiveMessage() string {
+	// Empty message means it's disabled.
+	message, err := _datastore.GetString(federationGoLiveMessageKey)
+	if err != nil {
+		log.Traceln("unable to fetch go live message.", err)
+	}
+
+	return message
+}
+
+// SetFederationIsPrivate will set if federation activity is private.
+func SetFederationIsPrivate(isPrivate bool) error {
+	return _datastore.SetBool(federationPrivateKey, isPrivate)
+}
+
+// GetFederationIsPrivate will return if federation is private.
+func GetFederationIsPrivate() bool {
+	isPrivate, err := _datastore.GetBool(federationPrivateKey)
+	if err == nil {
+		return isPrivate
+	}
+
+	return false
+}
+
+// SetFederationShowEngagement will set if fediverse engagement shows in chat.
+func SetFederationShowEngagement(showEngagement bool) error {
+	return _datastore.SetBool(federationShowEngagementKey, showEngagement)
+}
+
+// GetFederationShowEngagement will return if fediverse engagement shows in chat.
+func GetFederationShowEngagement() bool {
+	showEngagement, err := _datastore.GetBool(federationShowEngagementKey)
+	if err == nil {
+		return showEngagement
+	}
+
+	return true
+}
+
+// SetBlockedFederatedDomains will set the blocked federated domains.
+func SetBlockedFederatedDomains(domains []string) error {
+	return _datastore.SetString(federationBlockedDomainsKey, strings.Join(domains, ","))
+}
+
+// GetBlockedFederatedDomains will return a list of blocked federated domains.
+func GetBlockedFederatedDomains() []string {
+	domains, err := _datastore.GetString(federationBlockedDomainsKey)
+	if err != nil {
+		return []string{}
+	}
+
+	if domains == "" {
+		return []string{}
+	}
+
+	return strings.Split(domains, ",")
+}

core/data/crypto.go

@@ -0,0 +1,23 @@
+package data
+
+// GetPublicKey will return the public key.
+func GetPublicKey() string {
+	value, _ := _datastore.GetString(publicKeyKey)
+	return value
+}
+
+// SetPublicKey will save the public key.
+func SetPublicKey(key string) error {
+	return _datastore.SetString(publicKeyKey, key)
+}
+
+// GetPrivateKey will return the private key.
+func GetPrivateKey() string {
+	value, _ := _datastore.GetString(privateKeyKey)
+	return value
+}
+
+// SetPrivateKey will save the private key.
+func SetPrivateKey(key string) error {
+	return _datastore.SetString(privateKeyKey, key)
+}

core/data/data.go

@@ -17,11 +17,13 @@ import (
 )
 
 const (
-	schemaVersion = 1
+	schemaVersion = 3
 )
 
-var _db *sql.DB
-var _datastore *Datastore
+var (
+	_db        *sql.DB
+	_datastore *Datastore
+)
 
 // GetDatabase will return the shared instance of the actual database.
 func GetDatabase() *sql.DB {
@@ -35,18 +37,34 @@ func GetStore() *Datastore {
 
 // SetupPersistence will open the datastore and make it available.
 func SetupPersistence(file string) error {
-	// Create empty DB file if it doesn't exist.
-	if !utils.DoesFileExists(file) {
-		log.Traceln("Creating new database at", file)
+	// Allow support for in-memory databases for tests.
 
-		_, err := os.Create(file)
+	var db *sql.DB
+
+	if file == ":memory:" {
+		inMemoryDb, err := sql.Open("sqlite3", file)
 		if err != nil {
 			log.Fatal(err.Error())
 		}
-	}
+		db = inMemoryDb
+	} else {
+		// Create empty DB file if it doesn't exist.
+		if !utils.DoesFileExists(file) {
+			log.Traceln("Creating new database at", file)
 
-	db, err := sql.Open("sqlite3", fmt.Sprintf("file:%s?_cache_size=10000&cache=shared&_journal_mode=WAL", file))
-	db.SetMaxOpenConns(1)
+			_, err := os.Create(file)
+			if err != nil {
+				log.Fatal(err.Error())
+			}
+		}
+
+		onDiskDb, err := sql.Open("sqlite3", fmt.Sprintf("file:%s?_cache_size=10000&cache=shared&_journal_mode=WAL", file))
+		if err != nil {
+			return err
+		}
+		db = onDiskDb
+		db.SetMaxOpenConns(1)
+	}
 	_db = db
 
 	// Some SQLite optimizations
@@ -58,10 +76,6 @@ func SetupPersistence(file string) error {
 	createWebhooksTable()
 	createUsersTable(db)
 
-	if err != nil {
-		return err
-	}
-
 	if _, err := db.Exec(`CREATE TABLE IF NOT EXISTS config (
 		"key" string NOT NULL PRIMARY KEY,
 		"value" TEXT
@@ -70,7 +84,7 @@ func SetupPersistence(file string) error {
 	}
 
 	var version int
-	err = db.QueryRow("SELECT value FROM config WHERE key='version'").
+	err := db.QueryRow("SELECT value FROM config WHERE key='version'").
 		Scan(&version)
 	if err != nil {
 		if err != sql.ErrNoRows {
@@ -117,10 +131,14 @@ func migrateDatabase(db *sql.DB, from, to int) error {
 	dbBackupFile := filepath.Join(config.BackupDirectory, fmt.Sprintf("owncast-v%d.bak", from))
 	utils.Backup(db, dbBackupFile)
 	for v := from; v < to; v++ {
+		log.Tracef("Migration step from %d to %d\n", v, v+1)
 		switch v {
 		case 0:
-			log.Tracef("Migration step from %d to %d\n", v, v+1)
 			migrateToSchema1(db)
+		case 1:
+			migrateToSchema2(db)
+		case 2:
+			migrateToSchema3(db)
 		default:
 			log.Fatalln("missing database migration step")
 		}

core/data/defaults.go

@@ -14,6 +14,14 @@ func HasPopulatedDefaults() bool {
 	return hasPopulated
 }
 
+func hasPopulatedFederationDefaults() bool {
+	hasPopulated, err := _datastore.GetBool("HAS_POPULATED_FEDERATION_DEFAULTS")
+	if err != nil {
+		return false
+	}
+	return hasPopulated
+}
+
 // PopulateDefaults will set default values in the database.
 func PopulateDefaults() {
 	defaults := config.GetDefaults()
@@ -32,6 +40,7 @@ func PopulateDefaults() {
 	_ = SetServerName("Owncast")
 	_ = SetStreamKey(defaults.StreamKey)
 	_ = SetExtraPageBodyContent("This is your page's content that can be edited in the admin.")
+	_ = SetFederationGoLiveMessage(defaults.FederationGoLiveMessage)
 	_ = SetSocialHandles([]models.SocialHandle{
 		{
 			Platform: "github",

core/data/messages.go

@@ -15,6 +15,10 @@ func CreateMessagesTable(db *sql.DB) {
 		"eventType" TEXT,
 		"hidden_at" DATETIME,
 		"timestamp" DATETIME,
+    "title" TEXT,
+    "subtitle" TEXT,
+    "image" TEXT,
+    "link" TEXT,
 		PRIMARY KEY (id)
 	);CREATE INDEX index ON messages (id, user_id, hidden_at, timestamp);
 	CREATE INDEX id ON messages (id);

core/data/migrations.go

@@ -9,6 +9,44 @@ import (
 	"github.com/teris-io/shortid"
 )
 
+func migrateToSchema3(db *sql.DB) {
+	// Since it's just a backlog of chat messages let's wipe the old messages
+	// and recreate the table.
+
+	// Drop the old messages table
+	stmt, err := db.Prepare("DROP TABLE messages")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+	_, err = stmt.Exec()
+	if err != nil {
+		log.Warnln(err)
+	}
+
+	// Recreate it
+	CreateMessagesTable(db)
+}
+
+func migrateToSchema2(db *sql.DB) {
+	// Since it's just a backlog of chat messages let's wipe the old messages
+	// and recreate the table.
+
+	// Drop the old messages table
+	stmt, err := db.Prepare("DROP TABLE messages")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+	_, err = stmt.Exec()
+	if err != nil {
+		log.Warnln(err)
+	}
+
+	// Recreate it
+	CreateMessagesTable(db)
+}
+
 func migrateToSchema1(db *sql.DB) {
 	// Since it's just a backlog of chat messages let's wipe the old messages
 	// and recreate the table.
@@ -100,7 +138,6 @@ func insertAPIToken(db *sql.DB, token string, name string, color int, scopes str
 		return err
 	}
 	stmt, err := tx.Prepare("INSERT INTO users(id, access_token, display_name, display_color, scopes, type) values(?, ?, ?, ?, ?, ?)")
-
 	if err != nil {
 		return err
 	}

core/data/persistence.go

@@ -5,9 +5,12 @@ import (
 	"database/sql"
 	"encoding/gob"
 	"sync"
+	"time"
 
 	// sqlite requires a blank import.
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/owncast/owncast/config"
+	"github.com/owncast/owncast/db"
 	log "github.com/sirupsen/logrus"
 )
 
@@ -37,6 +40,11 @@ func (ds *Datastore) warmCache() {
 	}
 }
 
+// GetQueries will return the shared instance of the SQL query generator.
+func (ds *Datastore) GetQueries() *db.Queries {
+	return db.New(ds.DB)
+}
+
 // Get will query the database for the key and return the entry.
 func (ds *Datastore) Get(key string) (ConfigEntry, error) {
 	cachedValue, err := ds.GetCachedValue(key)
@@ -125,6 +133,20 @@ func (ds *Datastore) Setup() {
 	if !HasPopulatedDefaults() {
 		PopulateDefaults()
 	}
+
+	if !hasPopulatedFederationDefaults() {
+		if err := SetFederationGoLiveMessage(config.GetDefaults().FederationGoLiveMessage); err != nil {
+			log.Errorln(err)
+		}
+		if err := _datastore.SetBool("HAS_POPULATED_FEDERATION_DEFAULTS", true); err != nil {
+			log.Errorln(err)
+		}
+	}
+
+	// Set the server initialization date if needed.
+	if hasSetInitDate, _ := GetServerInitTime(); hasSetInitDate == nil || !hasSetInitDate.Valid {
+		_ = SetServerInitTime(time.Now())
+	}
 }
 
 // Reset will delete all config entries in the datastore and start over.

core/data/users.go

@@ -24,6 +24,7 @@ func createUsersTable(db *sql.DB) {
 		PRIMARY KEY (id)
 	);CREATE INDEX index ON users (id, access_token, disabled_at);
 	CREATE INDEX id ON users (id);
+  CREATE INDEX id_disabled ON users (id, disabled_at);
 	CREATE INDEX access_token ON users (access_token);
 	CREATE INDEX disabled_at ON USERS (disabled_at);`
 

core/streamState.go

@@ -1,11 +1,13 @@
 package core
 
 import (
+	"context"
 	"io"
 	"time"
 
 	log "github.com/sirupsen/logrus"
 
+	"github.com/owncast/owncast/activitypub"
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/core/chat"
 	"github.com/owncast/owncast/core/data"
@@ -24,6 +26,8 @@ var _onlineCleanupTicker *time.Ticker
 
 var _currentBroadcast *models.CurrentBroadcast
 
+var _onlineTimerCancelFunc context.CancelFunc
+
 // setStreamAsConnected sets the stream as connected.
 func setStreamAsConnected(rtmpOut *io.PipeReader) {
 	now := utils.NullTime{Time: time.Now(), Valid: true}
@@ -66,6 +70,11 @@ func setStreamAsConnected(rtmpOut *io.PipeReader) {
 
 	_ = chat.SendSystemAction("Stay tuned, the stream is **starting**!", true)
 	chat.SendAllWelcomeMessage()
+
+	// Send a delayed live Federated message.
+	if data.GetFederationEnabled() {
+		_onlineTimerCancelFunc = startFederatedLiveStreamMessageTimer()
+	}
 }
 
 // SetStreamAsDisconnected sets the stream as disconnected.
@@ -73,6 +82,10 @@ func SetStreamAsDisconnected() {
 	_ = chat.SendSystemAction("The stream is ending.", true)
 
 	now := utils.NullTime{Time: time.Now(), Valid: true}
+	if _onlineTimerCancelFunc != nil {
+		_onlineTimerCancelFunc()
+	}
+
 	_stats.StreamConnected = false
 	_stats.LastDisconnectTime = &now
 	_stats.LastConnectTime = nil
@@ -147,3 +160,20 @@ func stopOnlineCleanupTimer() {
 		_onlineCleanupTicker.Stop()
 	}
 }
+
+func startFederatedLiveStreamMessageTimer() context.CancelFunc {
+	// Send a delayed live Federated message.
+	c, cancelFunc := context.WithCancel(context.Background())
+	_onlineTimerCancelFunc = cancelFunc
+	go func(c context.Context) {
+		select {
+		case <-time.After(time.Minute * 2.0):
+			log.Traceln("Sending Federated Go Live message.")
+			if err := activitypub.SendLive(); err != nil {
+				log.Errorln(err)
+			}
+		case <-c.Done():
+		}
+	}(c)
+	return cancelFunc
+}

core/transcoder/thumbnailGenerator.go

@@ -110,10 +110,7 @@ func fireThumbnailGenerator(segmentPath string, variantIndex int) error {
 		log.Errorln(err)
 	}
 
-	// If YP support is enabled also create an animated GIF preview
-	if data.GetDirectoryEnabled() {
-		makeAnimatedGifPreview(mostRecentFile, previewGifFile)
-	}
+	makeAnimatedGifPreview(mostRecentFile, previewGifFile)
 
 	return nil
 }

db/README.md

@@ -0,0 +1,28 @@
+# SQL Queries
+
+sqlc generates **type-safe code** from SQL. Here's how it works:
+
+1. You define the schema in `schema.sql`.
+1. You write your queries in `query.sql` using regular SQL.
+1. You run `sqlc generate` to generate Go code with type-safe interfaces to those queries.
+1. You write application code that calls the generated code.
+
+Only those who need to create or update SQL queries will need to have `sqlc` installed on their system. **It is not a dependency required to build the codebase.**
+
+## Install sqlc
+
+### Snap
+
+`sudo snap install sqlc`
+
+### Go install
+
+`go install github.com/kyleconroy/sqlc/cmd/sqlc@latest`
+
+### macOS
+
+`brew install sqlc`
+
+### Download a release
+
+Visit <https://github.com/kyleconroy/sqlc/releases> to download a release for your environment.

db/db.go

@@ -0,0 +1,29 @@
+// Code generated by sqlc. DO NOT EDIT.
+
+package db
+
+import (
+	"context"
+	"database/sql"
+)
+
+type DBTX interface {
+	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
+	PrepareContext(context.Context, string) (*sql.Stmt, error)
+	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx *sql.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

db/models.go

@@ -0,0 +1,36 @@
+// Code generated by sqlc. DO NOT EDIT.
+
+package db
+
+import (
+	"database/sql"
+	"time"
+)
+
+type ApAcceptedActivity struct {
+	ID        int32
+	Iri       string
+	Actor     string
+	Type      string
+	Timestamp time.Time
+}
+
+type ApFollower struct {
+	Iri        string
+	Inbox      string
+	Name       sql.NullString
+	Username   string
+	Image      sql.NullString
+	Request    string
+	CreatedAt  sql.NullTime
+	ApprovedAt sql.NullTime
+	DisabledAt sql.NullTime
+}
+
+type ApOutbox struct {
+	Iri              string
+	Value            []byte
+	Type             string
+	CreatedAt        sql.NullTime
+	LiveNotification sql.NullBool
+}

db/query.sql

@@ -0,0 +1,57 @@
+-- Queries added to query.sql must be compiled into Go code with sqlc. Read README.md for details.
+
+-- Federation related queries.
+
+-- name: GetFollowerCount :one
+SElECT count(*) FROM ap_followers WHERE approved_at is not null;
+
+-- name: GetLocalPostCount :one
+SElECT count(*) FROM ap_outbox;
+
+-- name: GetFederationFollowersWithOffset :many
+SELECT iri, inbox, name, username, image, created_at FROM ap_followers WHERE approved_at is not null LIMIT $1 OFFSET $2;
+
+-- name: GetRejectedAndBlockedFollowers :many
+SELECT iri, name, username, image, created_at, disabled_at FROM ap_followers WHERE disabled_at is not null;
+
+-- name: GetFederationFollowerApprovalRequests :many
+SELECT iri, inbox, name, username, image, created_at FROM ap_followers WHERE approved_at IS null AND disabled_at is null;
+
+-- name: ApproveFederationFollower :exec
+UPDATE ap_followers SET approved_at = $1, disabled_at = null WHERE iri = $2;
+
+-- name: RejectFederationFollower :exec
+UPDATE ap_followers SET approved_at = null, disabled_at = $1 WHERE iri = $2;
+
+-- name: GetFollowerByIRI :one
+SELECT iri, inbox, name, username, image, request, created_at, approved_at, disabled_at FROM ap_followers WHERE iri = $1;
+
+-- name: GetOutboxWithOffset :many
+SELECT value FROM ap_outbox LIMIT $1 OFFSET $2;
+
+-- name: GetObjectFromOutboxByID :one
+SELECT value FROM ap_outbox WHERE iri = $1;
+
+-- name: GetObjectFromOutboxByIRI :one
+SELECT value, live_notification, created_at FROM ap_outbox WHERE iri = $1;
+
+-- name: RemoveFollowerByIRI :exec
+DELETE FROM ap_followers WHERE iri = $1;
+
+-- name: AddFollower :exec
+INSERT INTO ap_followers(iri, inbox, request, name, username, image, approved_at) values($1, $2, $3, $4, $5, $6, $7);
+
+-- name: AddToOutbox :exec
+INSERT INTO ap_outbox(iri, value, type, live_notification) values($1, $2, $3, $4);
+
+-- name: AddToAcceptedActivities :exec
+INSERT INTO ap_accepted_activities(iri, actor, type, timestamp) values($1, $2, $3, $4);
+
+-- name: GetInboundActivitiesWithOffset :many
+SELECT iri, actor, type, timestamp FROM ap_accepted_activities ORDER BY timestamp DESC LIMIT $1 OFFSET $2;
+
+-- name: DoesInboundActivityExist :one
+SELECT count(*) FROM ap_accepted_activities WHERE iri = $1 AND actor = $2 AND TYPE = $3;
+
+-- name: UpdateFollowerByIRI :exec
+UPDATE ap_followers SET inbox = $1, name = $2, username = $3, image = $4 WHERE iri = $5;

db/query.sql.go

@@ -0,0 +1,441 @@
+// Code generated by sqlc. DO NOT EDIT.
+// source: query.sql
+
+package db
+
+import (
+	"context"
+	"database/sql"
+	"time"
+)
+
+const addFollower = `-- name: AddFollower :exec
+INSERT INTO ap_followers(iri, inbox, request, name, username, image, approved_at) values($1, $2, $3, $4, $5, $6, $7)
+`
+
+type AddFollowerParams struct {
+	Iri        string
+	Inbox      string
+	Request    string
+	Name       sql.NullString
+	Username   string
+	Image      sql.NullString
+	ApprovedAt sql.NullTime
+}
+
+func (q *Queries) AddFollower(ctx context.Context, arg AddFollowerParams) error {
+	_, err := q.db.ExecContext(ctx, addFollower,
+		arg.Iri,
+		arg.Inbox,
+		arg.Request,
+		arg.Name,
+		arg.Username,
+		arg.Image,
+		arg.ApprovedAt,
+	)
+	return err
+}
+
+const addToAcceptedActivities = `-- name: AddToAcceptedActivities :exec
+INSERT INTO ap_accepted_activities(iri, actor, type, timestamp) values($1, $2, $3, $4)
+`
+
+type AddToAcceptedActivitiesParams struct {
+	Iri       string
+	Actor     string
+	Type      string
+	Timestamp time.Time
+}
+
+func (q *Queries) AddToAcceptedActivities(ctx context.Context, arg AddToAcceptedActivitiesParams) error {
+	_, err := q.db.ExecContext(ctx, addToAcceptedActivities,
+		arg.Iri,
+		arg.Actor,
+		arg.Type,
+		arg.Timestamp,
+	)
+	return err
+}
+
+const addToOutbox = `-- name: AddToOutbox :exec
+INSERT INTO ap_outbox(iri, value, type, live_notification) values($1, $2, $3, $4)
+`
+
+type AddToOutboxParams struct {
+	Iri              string
+	Value            []byte
+	Type             string
+	LiveNotification sql.NullBool
+}
+
+func (q *Queries) AddToOutbox(ctx context.Context, arg AddToOutboxParams) error {
+	_, err := q.db.ExecContext(ctx, addToOutbox,
+		arg.Iri,
+		arg.Value,
+		arg.Type,
+		arg.LiveNotification,
+	)
+	return err
+}
+
+const approveFederationFollower = `-- name: ApproveFederationFollower :exec
+UPDATE ap_followers SET approved_at = $1, disabled_at = null WHERE iri = $2
+`
+
+type ApproveFederationFollowerParams struct {
+	ApprovedAt sql.NullTime
+	Iri        string
+}
+
+func (q *Queries) ApproveFederationFollower(ctx context.Context, arg ApproveFederationFollowerParams) error {
+	_, err := q.db.ExecContext(ctx, approveFederationFollower, arg.ApprovedAt, arg.Iri)
+	return err
+}
+
+const doesInboundActivityExist = `-- name: DoesInboundActivityExist :one
+SELECT count(*) FROM ap_accepted_activities WHERE iri = $1 AND actor = $2 AND TYPE = $3
+`
+
+type DoesInboundActivityExistParams struct {
+	Iri   string
+	Actor string
+	Type  string
+}
+
+func (q *Queries) DoesInboundActivityExist(ctx context.Context, arg DoesInboundActivityExistParams) (int64, error) {
+	row := q.db.QueryRowContext(ctx, doesInboundActivityExist, arg.Iri, arg.Actor, arg.Type)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const getFederationFollowerApprovalRequests = `-- name: GetFederationFollowerApprovalRequests :many
+SELECT iri, inbox, name, username, image, created_at FROM ap_followers WHERE approved_at IS null AND disabled_at is null
+`
+
+type GetFederationFollowerApprovalRequestsRow struct {
+	Iri       string
+	Inbox     string
+	Name      sql.NullString
+	Username  string
+	Image     sql.NullString
+	CreatedAt sql.NullTime
+}
+
+func (q *Queries) GetFederationFollowerApprovalRequests(ctx context.Context) ([]GetFederationFollowerApprovalRequestsRow, error) {
+	rows, err := q.db.QueryContext(ctx, getFederationFollowerApprovalRequests)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetFederationFollowerApprovalRequestsRow
+	for rows.Next() {
+		var i GetFederationFollowerApprovalRequestsRow
+		if err := rows.Scan(
+			&i.Iri,
+			&i.Inbox,
+			&i.Name,
+			&i.Username,
+			&i.Image,
+			&i.CreatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getFederationFollowersWithOffset = `-- name: GetFederationFollowersWithOffset :many
+SELECT iri, inbox, name, username, image, created_at FROM ap_followers WHERE approved_at is not null LIMIT $1 OFFSET $2
+`
+
+type GetFederationFollowersWithOffsetParams struct {
+	Limit  int32
+	Offset int32
+}
+
+type GetFederationFollowersWithOffsetRow struct {
+	Iri       string
+	Inbox     string
+	Name      sql.NullString
+	Username  string
+	Image     sql.NullString
+	CreatedAt sql.NullTime
+}
+
+func (q *Queries) GetFederationFollowersWithOffset(ctx context.Context, arg GetFederationFollowersWithOffsetParams) ([]GetFederationFollowersWithOffsetRow, error) {
+	rows, err := q.db.QueryContext(ctx, getFederationFollowersWithOffset, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetFederationFollowersWithOffsetRow
+	for rows.Next() {
+		var i GetFederationFollowersWithOffsetRow
+		if err := rows.Scan(
+			&i.Iri,
+			&i.Inbox,
+			&i.Name,
+			&i.Username,
+			&i.Image,
+			&i.CreatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getFollowerByIRI = `-- name: GetFollowerByIRI :one
+SELECT iri, inbox, name, username, image, request, created_at, approved_at, disabled_at FROM ap_followers WHERE iri = $1
+`
+
+func (q *Queries) GetFollowerByIRI(ctx context.Context, iri string) (ApFollower, error) {
+	row := q.db.QueryRowContext(ctx, getFollowerByIRI, iri)
+	var i ApFollower
+	err := row.Scan(
+		&i.Iri,
+		&i.Inbox,
+		&i.Name,
+		&i.Username,
+		&i.Image,
+		&i.Request,
+		&i.CreatedAt,
+		&i.ApprovedAt,
+		&i.DisabledAt,
+	)
+	return i, err
+}
+
+const getFollowerCount = `-- name: GetFollowerCount :one
+
+
+SElECT count(*) FROM ap_followers WHERE approved_at is not null
+`
+
+// Queries added to query.sql must be compiled into Go code with sqlc. Read README.md for details.
+// Federation related queries.
+func (q *Queries) GetFollowerCount(ctx context.Context) (int64, error) {
+	row := q.db.QueryRowContext(ctx, getFollowerCount)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const getInboundActivitiesWithOffset = `-- name: GetInboundActivitiesWithOffset :many
+SELECT iri, actor, type, timestamp FROM ap_accepted_activities ORDER BY timestamp DESC LIMIT $1 OFFSET $2
+`
+
+type GetInboundActivitiesWithOffsetParams struct {
+	Limit  int32
+	Offset int32
+}
+
+type GetInboundActivitiesWithOffsetRow struct {
+	Iri       string
+	Actor     string
+	Type      string
+	Timestamp time.Time
+}
+
+func (q *Queries) GetInboundActivitiesWithOffset(ctx context.Context, arg GetInboundActivitiesWithOffsetParams) ([]GetInboundActivitiesWithOffsetRow, error) {
+	rows, err := q.db.QueryContext(ctx, getInboundActivitiesWithOffset, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetInboundActivitiesWithOffsetRow
+	for rows.Next() {
+		var i GetInboundActivitiesWithOffsetRow
+		if err := rows.Scan(
+			&i.Iri,
+			&i.Actor,
+			&i.Type,
+			&i.Timestamp,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getLocalPostCount = `-- name: GetLocalPostCount :one
+SElECT count(*) FROM ap_outbox
+`
+
+func (q *Queries) GetLocalPostCount(ctx context.Context) (int64, error) {
+	row := q.db.QueryRowContext(ctx, getLocalPostCount)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const getObjectFromOutboxByID = `-- name: GetObjectFromOutboxByID :one
+SELECT value FROM ap_outbox WHERE iri = $1
+`
+
+func (q *Queries) GetObjectFromOutboxByID(ctx context.Context, iri string) ([]byte, error) {
+	row := q.db.QueryRowContext(ctx, getObjectFromOutboxByID, iri)
+	var value []byte
+	err := row.Scan(&value)
+	return value, err
+}
+
+const getObjectFromOutboxByIRI = `-- name: GetObjectFromOutboxByIRI :one
+SELECT value, live_notification, created_at FROM ap_outbox WHERE iri = $1
+`
+
+type GetObjectFromOutboxByIRIRow struct {
+	Value            []byte
+	LiveNotification sql.NullBool
+	CreatedAt        sql.NullTime
+}
+
+func (q *Queries) GetObjectFromOutboxByIRI(ctx context.Context, iri string) (GetObjectFromOutboxByIRIRow, error) {
+	row := q.db.QueryRowContext(ctx, getObjectFromOutboxByIRI, iri)
+	var i GetObjectFromOutboxByIRIRow
+	err := row.Scan(&i.Value, &i.LiveNotification, &i.CreatedAt)
+	return i, err
+}
+
+const getOutboxWithOffset = `-- name: GetOutboxWithOffset :many
+SELECT value FROM ap_outbox LIMIT $1 OFFSET $2
+`
+
+type GetOutboxWithOffsetParams struct {
+	Limit  int32
+	Offset int32
+}
+
+func (q *Queries) GetOutboxWithOffset(ctx context.Context, arg GetOutboxWithOffsetParams) ([][]byte, error) {
+	rows, err := q.db.QueryContext(ctx, getOutboxWithOffset, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items [][]byte
+	for rows.Next() {
+		var value []byte
+		if err := rows.Scan(&value); err != nil {
+			return nil, err
+		}
+		items = append(items, value)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getRejectedAndBlockedFollowers = `-- name: GetRejectedAndBlockedFollowers :many
+SELECT iri, name, username, image, created_at, disabled_at FROM ap_followers WHERE disabled_at is not null
+`
+
+type GetRejectedAndBlockedFollowersRow struct {
+	Iri        string
+	Name       sql.NullString
+	Username   string
+	Image      sql.NullString
+	CreatedAt  sql.NullTime
+	DisabledAt sql.NullTime
+}
+
+func (q *Queries) GetRejectedAndBlockedFollowers(ctx context.Context) ([]GetRejectedAndBlockedFollowersRow, error) {
+	rows, err := q.db.QueryContext(ctx, getRejectedAndBlockedFollowers)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetRejectedAndBlockedFollowersRow
+	for rows.Next() {
+		var i GetRejectedAndBlockedFollowersRow
+		if err := rows.Scan(
+			&i.Iri,
+			&i.Name,
+			&i.Username,
+			&i.Image,
+			&i.CreatedAt,
+			&i.DisabledAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const rejectFederationFollower = `-- name: RejectFederationFollower :exec
+UPDATE ap_followers SET approved_at = null, disabled_at = $1 WHERE iri = $2
+`
+
+type RejectFederationFollowerParams struct {
+	DisabledAt sql.NullTime
+	Iri        string
+}
+
+func (q *Queries) RejectFederationFollower(ctx context.Context, arg RejectFederationFollowerParams) error {
+	_, err := q.db.ExecContext(ctx, rejectFederationFollower, arg.DisabledAt, arg.Iri)
+	return err
+}
+
+const removeFollowerByIRI = `-- name: RemoveFollowerByIRI :exec
+DELETE FROM ap_followers WHERE iri = $1
+`
+
+func (q *Queries) RemoveFollowerByIRI(ctx context.Context, iri string) error {
+	_, err := q.db.ExecContext(ctx, removeFollowerByIRI, iri)
+	return err
+}
+
+const updateFollowerByIRI = `-- name: UpdateFollowerByIRI :exec
+UPDATE ap_followers SET inbox = $1, name = $2, username = $3, image = $4 WHERE iri = $5
+`
+
+type UpdateFollowerByIRIParams struct {
+	Inbox    string
+	Name     sql.NullString
+	Username string
+	Image    sql.NullString
+	Iri      string
+}
+
+func (q *Queries) UpdateFollowerByIRI(ctx context.Context, arg UpdateFollowerByIRIParams) error {
+	_, err := q.db.ExecContext(ctx, updateFollowerByIRI,
+		arg.Inbox,
+		arg.Name,
+		arg.Username,
+		arg.Image,
+		arg.Iri,
+	)
+	return err
+}

db/schema.sql

@@ -0,0 +1,37 @@
+-- Schema update to query.sql must be referenced in queries located in query.sql
+-- and compiled into code with sqlc. Read README.md for details.
+
+CREATE TABLE IF NOT EXISTS ap_followers (
+		"iri" TEXT NOT NULL,
+		"inbox" TEXT NOT NULL,
+		"name" TEXT,
+		"username" TEXT NOT NULL,
+		"image" TEXT,
+    "request" TEXT NOT NULL,
+		"created_at" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+		"approved_at" TIMESTAMP,
+    "disabled_at" TIMESTAMP,
+		PRIMARY KEY (iri));
+		CREATE INDEX iri_index ON ap_followers (iri);
+    CREATE INDEX approved_at_index ON ap_followers (approved_at);
+
+
+CREATE TABLE IF NOT EXISTS ap_outbox (
+		"iri" TEXT NOT NULL,
+		"value" BLOB,
+		"type" TEXT NOT NULL,
+		"created_at" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    "live_notification" BOOLEAN DEFAULT FALSE,
+		PRIMARY KEY (iri));
+		CREATE INDEX iri ON ap_outbox (iri);
+		CREATE INDEX type ON ap_outbox (type);
+    CREATE INDEX live_notification ON ap_outbox (live_notification);
+
+CREATE TABLE IF NOT EXISTS ap_accepted_activities (
+    "id" INTEGER NOT NULL PRIMARY KEY,
+		"iri" TEXT NOT NULL,
+    "actor" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+		"timestamp" TIMESTAMP NOT NULL
+	);
+	CREATE INDEX iri_actor_index ON ap_accepted_activities (iri,actor);

go.mod

@@ -5,6 +5,9 @@ go 1.17
 require (
 	github.com/amalfra/etag v0.0.0-20190921100247-cafc8de96bc5
 	github.com/aws/aws-sdk-go v1.42.0
+	github.com/go-fed/activity v1.0.1-0.20210803212804-d866ba75dd0f
+	github.com/go-fed/httpsig v1.1.0
+	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/gorilla/websocket v1.4.2
 	github.com/grafov/m3u8 v0.11.1
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible
@@ -26,18 +29,20 @@ require (
 
 require (
 	github.com/aymerick/douceur v0.2.0 // indirect
-	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/gorilla/css v1.0.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/lestrrat-go/strftime v1.0.4 // indirect
 	github.com/mvdan/xurls v1.1.0 // indirect
 	github.com/oschwald/maxminddb-golang v1.8.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pkg/errors v0.9.1
 	github.com/tklauser/go-sysconf v0.3.5 // indirect
 	github.com/tklauser/numcpus v0.2.2 // indirect
 	github.com/yusufpapurcu/wmi v1.2.2 // indirect
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 // indirect
 	golang.org/x/net v0.0.0-20210614182718-04defd469f4e // indirect
 	golang.org/x/sys v0.0.0-20210514084401-e8d321eab015 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
+
+replace github.com/go-fed/activity => github.com/owncast/activity v1.0.1-0.20211229051252-7821289d4026

go.sum

@@ -4,11 +4,18 @@ github.com/aws/aws-sdk-go v1.42.0 h1:BMZws0t8NAhHFsfnT3B40IwD13jVDG5KerlRksctVIw
 github.com/aws/aws-sdk-go v1.42.0/go.mod h1:585smgzpB/KqRA+K3y/NL/oYRqQvpNJYvLm+LY1U59Q=
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
+github.com/dave/jennifer v1.3.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-fed/httpsig v0.1.1-0.20190914113940-c2de3672e5b5/go.mod h1:T56HUNYZUQ1AGUzhAYPugZfp36sKApVnGBgKlIY+aIE=
+github.com/go-fed/httpsig v1.1.0 h1:9M+hb0jkEICD8/cAiNqEB66R87tTINszBRTjwjQzWcI=
+github.com/go-fed/httpsig v1.1.0/go.mod h1:RCMrTZvN1bJYtofsG4rd5NaO5obxQ5xBkdiS7xsT7bM=
 github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
 github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
+github.com/go-test/deep v1.0.1 h1:UQhStjbkDClarlmv0am7OXXO4/GaPdCGiUiMTvi28sg=
+github.com/go-test/deep v1.0.1/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
+github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY=
 github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
@@ -42,6 +49,10 @@ github.com/oschwald/geoip2-golang v1.5.0 h1:igg2yQIrrcRccB1ytFXqBfOHCjXWIoMv85lV
 github.com/oschwald/geoip2-golang v1.5.0/go.mod h1:xdvYt5xQzB8ORWFqPnqMwZpCpgNagttWdoZLlJQzg7s=
 github.com/oschwald/maxminddb-golang v1.8.0 h1:Uh/DSnGoxsyp/KYbY1AuP0tYEwfs0sCph9p/UMXK/Hk=
 github.com/oschwald/maxminddb-golang v1.8.0/go.mod h1:RXZtst0N6+FY/3qCNmZMBApR19cdQj43/NM9VkrNAis=
+github.com/owncast/activity v1.0.1-0.20210908225327-e46ee45ec09c h1:lk78BK8sLYn8nwy4ZZdQqcRdkagxQI//wF/DXuxsg1Y=
+github.com/owncast/activity v1.0.1-0.20210908225327-e46ee45ec09c/go.mod h1:v4QoPaAzjWZ8zN2VFVGL5ep9C02mst0hQYHUpQwso4Q=
+github.com/owncast/activity v1.0.1-0.20211229051252-7821289d4026 h1:E1nxiX44BcMQTSSs8MHLm2rXnqXNedYZkFI31gXMsJc=
+github.com/owncast/activity v1.0.1-0.20211229051252-7821289d4026/go.mod h1:v4QoPaAzjWZ8zN2VFVGL5ep9C02mst0hQYHUpQwso4Q=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -73,8 +84,11 @@ github.com/yuin/goldmark v1.4.4 h1:zNWRjYUW32G9KirMXYHQHVNFkXvMI7LpgNW2AgYAoIs=
 github.com/yuin/goldmark v1.4.4/go.mod h1:rmuwmfZ0+bvzB24eSC//bk1R1Zp3hM0OXYv/G2LIilg=
 github.com/yusufpapurcu/wmi v1.2.2 h1:KBNDSne4vP5mbSWnJbO+51IMOXJB67QiYCSBrubbPRg=
 github.com/yusufpapurcu/wmi v1.2.2/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
+golang.org/x/crypto v0.0.0-20180527072434-ab813273cd59/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/mod v0.5.1 h1:OJxoQ/rynoF0dcCdI7cLPktw/hR2cueqYfjm43oqK38=
 golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -83,6 +97,7 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180525142821-c11f84a56e43/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

models/federatedActivity.go

@@ -0,0 +1,12 @@
+package models
+
+import "time"
+
+// FederatedActivity is an internal representation of an activity that was
+// accepted and stored.
+type FederatedActivity struct {
+	IRI       string    `json:"iri"`
+	ActorIRI  string    `json:"actorIRI"`
+	Type      string    `json:"type"`
+	Timestamp time.Time `json:"timestamp"`
+}

models/follower.go

@@ -0,0 +1,21 @@
+package models
+
+import "github.com/owncast/owncast/utils"
+
+// Follower is our internal representation of a single follower within Owncast.
+type Follower struct {
+	// ActorIRI is the IRI of the remote actor.
+	ActorIRI string `json:"link"`
+	// Inbox is the inbox URL of the remote follower
+	Inbox string `json:"-"`
+	// Name is the display name of the follower.
+	Name string `json:"name"`
+	// Username is the account username of the remote actor.
+	Username string `json:"username"`
+	// Image is the avatar image of the follower.
+	Image string `json:"image"`
+	// Timestamp is when this follow request was created.
+	Timestamp utils.NullTime `json:"timestamp,omitempty"`
+	// DisabledAt is when this follower was rejected or disabled.
+	DisabledAt utils.NullTime `json:"disabledAt,omitempty"`
+}

router/middleware/activityPub.go

@@ -0,0 +1,46 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/utils"
+)
+
+// RequireActivityPubOrRedirect will validate the requested content types and
+// redirect to the main Owncast page if it doesn't match.
+func RequireActivityPubOrRedirect(handler http.HandlerFunc) http.HandlerFunc {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if !data.GetFederationEnabled() {
+			w.WriteHeader(http.StatusMethodNotAllowed)
+			return
+		}
+
+		handleAccepted := func() {
+			handler(w, r)
+		}
+
+		acceptedContentTypes := []string{"application/json", "application/json+ld", "application/activity+json"}
+		acceptString := r.Header.Get("Accept")
+		accept := strings.Split(acceptString, ",")
+
+		for _, singleType := range accept {
+			if _, accepted := utils.FindInSlice(acceptedContentTypes, strings.TrimSpace(singleType)); accepted {
+				handleAccepted()
+				return
+			}
+		}
+
+		contentTypeString := r.Header.Get("Content-Type")
+		contentTypes := strings.Split(contentTypeString, ",")
+		for _, singleType := range contentTypes {
+			if _, accepted := utils.FindInSlice(acceptedContentTypes, strings.TrimSpace(singleType)); accepted {
+				handleAccepted()
+				return
+			}
+		}
+
+		http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
+	})
+}

router/middleware/headers.go

@@ -21,7 +21,7 @@ func SetHeaders(w http.ResponseWriter) {
 	}
 	// Content security policy
 	csp := []string{
-		fmt.Sprintf("script-src 'self' %s 'sha256-2HPCfJIJHnY0NrRDPTOdC7AOSJIcQyNxzUuut3TsYRY=' 'sha256-PzXGlTLvNFZ7et6GkP2nD3XuSaAKQVBSYiHzU2ZKm8o=' 'sha256-/wqazZOqIpFSIrNVseblbKCXrezG73X7CMqRSTf+8zw=' 'sha256-jCj2f+ICtd8fvdb0ngc+Hkr/ZnZOMvNkikno/XR6VZs='", unsafeEval),
+		fmt.Sprintf("script-src 'self' %s 'sha256-rnxPrBaD0OuYxsCdrll4QJwtDLcBJqFh0u27CoX5jZ8=' 'sha256-PzXGlTLvNFZ7et6GkP2nD3XuSaAKQVBSYiHzU2ZKm8o=' 'sha256-/wqazZOqIpFSIrNVseblbKCXrezG73X7CMqRSTf+8zw=' 'sha256-jCj2f+ICtd8fvdb0ngc+Hkr/ZnZOMvNkikno/XR6VZs='", unsafeEval),
 		"worker-src 'self' blob:", // No single quotes around blob:
 	}
 	w.Header().Set("Content-Security-Policy", strings.Join(csp, "; "))

router/router.go

@@ -6,10 +6,12 @@ import (
 
 	log "github.com/sirupsen/logrus"
 
+	"github.com/owncast/owncast/activitypub"
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/controllers"
 	"github.com/owncast/owncast/controllers/admin"
 	"github.com/owncast/owncast/core/chat"
+	"github.com/owncast/owncast/core/data"
 	"github.com/owncast/owncast/core/user"
 	"github.com/owncast/owncast/router/middleware"
 	"github.com/owncast/owncast/utils"
@@ -20,6 +22,8 @@ import (
 func Start() error {
 	// static files
 	http.HandleFunc("/", controllers.IndexHandler)
+	http.HandleFunc("/recordings", controllers.IndexHandler)
+	http.HandleFunc("/schedule", controllers.IndexHandler)
 
 	// admin static files
 	http.HandleFunc("/admin/", middleware.RequireAdminAuth(admin.ServeAdmin))
@@ -69,6 +73,12 @@ func Start() error {
 	// register a new chat user
 	http.HandleFunc("/api/chat/register", controllers.RegisterAnonymousChatUser)
 
+	// return remote follow details
+	http.HandleFunc("/api/remotefollow", controllers.RemoteFollow)
+
+	// return followers
+	http.HandleFunc("/api/followers", controllers.GetFollowers)
+
 	// Authenticated admin requests
 
 	// Current inbound broadcaster
@@ -116,6 +126,18 @@ func Start() error {
 	// Get a list of moderator users
 	http.HandleFunc("/api/admin/chat/users/moderators", middleware.RequireAdminAuth(admin.GetModerators))
 
+	// return followers
+	http.HandleFunc("/api/admin/followers", middleware.RequireAdminAuth(controllers.GetFollowers))
+
+	// Get a list of pending follow requests
+	http.HandleFunc("/api/admin/followers/pending", middleware.RequireAdminAuth(admin.GetPendingFollowRequests))
+
+	// Get a list of rejected or blocked follows
+	http.HandleFunc("/api/admin/followers/blocked", middleware.RequireAdminAuth(admin.GetBlockedAndRejectedFollowers))
+
+	// Set the following state of a follower or follow request.
+	http.HandleFunc("/api/admin/followers/approve", middleware.RequireAdminAuth(admin.ApproveFollower))
+
 	// Update config values
 
 	// Change the current streaming key in memory
@@ -257,6 +279,34 @@ func Start() error {
 
 	// Enable/disable a user
 	http.HandleFunc("/api/chat/users/setenabled", middleware.RequireUserModerationScopeAccesstoken(admin.UpdateUserEnabled))
+	// Configure Federation features
+
+	// enable/disable federation features
+	http.HandleFunc("/api/admin/config/federation/enable", middleware.RequireAdminAuth(admin.SetFederationEnabled))
+
+	// set if federation activities are private
+	http.HandleFunc("/api/admin/config/federation/private", middleware.RequireAdminAuth(admin.SetFederationActivityPrivate))
+
+	// set if fediverse engagement appears in chat
+	http.HandleFunc("/api/admin/config/federation/showengagement", middleware.RequireAdminAuth(admin.SetFederationShowEngagement))
+
+	// set local federated username
+	http.HandleFunc("/api/admin/config/federation/username", middleware.RequireAdminAuth(admin.SetFederationUsername))
+
+	// set federated go live message
+	http.HandleFunc("/api/admin/config/federation/livemessage", middleware.RequireAdminAuth(admin.SetFederationGoLiveMessage))
+
+	// Federation blocked domains
+	http.HandleFunc("/api/admin/config/federation/blockdomains", middleware.RequireAdminAuth(admin.SetFederationBlockDomains))
+
+	// send a public message to the Fediverse from the server's user
+	http.HandleFunc("/api/admin/federation/send", middleware.RequireAdminAuth(admin.SendFederatedMessage))
+
+	// Return federated activities
+	http.HandleFunc("/api/admin/federation/actions", middleware.RequireAdminAuth(admin.GetFederatedActions))
+
+	// ActivityPub has its own router
+	activitypub.Start(data.GetDatastore())
 
 	// websocket
 	http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {

sqlc.json

@@ -0,0 +1,9 @@
+{
+    "version": "1",
+    "packages": [{
+      "schema": "db/schema.sql",
+      "queries": "db/query.sql",
+      "name": "db",
+      "path": "db"
+    }]
+  } 

static/admin/_next/static/S0l4GknIl5ifWnPqwFnrr/_buildManifest.js

@@ -0,0 +1 @@
+self.__BUILD_MANIFEST=function(s,c,e,a,t,i,n,f,d,o,h,b,g,u){return{__rewrites:{beforeFiles:[],afterFiles:[],fallback:[]},"/":[s,c,e,a,t,i,f,"static/chunks/59-bb3486f7473684cf.js","static/chunks/pages/index-e81f0bed001d207c.js"],"/_error":["static/chunks/pages/_error-a3f18418a2205cb8.js"],"/access-tokens":[s,c,"static/chunks/pages/access-tokens-d3e9e11b79321dbb.js"],"/actions":[s,"static/chunks/pages/actions-6889c0d5d40aa70e.js"],"/chat/messages":[d,s,c,i,o,"static/chunks/pages/chat/messages-dc2695d5bac28933.js"],"/chat/users":[d,s,c,e,i,o,"static/chunks/pages/chat/users-4426bd981b718014.js"],"/config-chat":["static/chunks/pages/config-chat-3f47c2e436acea43.js"],"/config-federation":["static/chunks/674-fd7f35cd345c7a4b.js","static/chunks/pages/config-federation-ddff59205ab33383.js"],"/config-public-details":[s,n,"static/css/4da23ced01517a16.css","static/chunks/589-57c6e66ff27bec68.js",h,"static/chunks/pages/config-public-details-02c80e54bdb91852.js"],"/config-server-details":[b,"static/chunks/pages/config-server-details-40fd225da49d9b45.js"],"/config-social-items":[s,h,"static/chunks/pages/config-social-items-9ecbdce4f557ac9b.js"],"/config-storage":["static/chunks/473-2f8a49a631089460.js","static/chunks/pages/config-storage-4b8f9ff84ca4aa30.js"],"/config-video":[s,b,"static/chunks/556-4bf62bd783267914.js","static/chunks/pages/config-video-c250bf8f88dd1d1b.js"],"/federation/actions":[s,c,"static/chunks/pages/federation/actions-a817c8d84eb2e1bf.js"],"/federation/followers":[s,c,e,"static/chunks/pages/federation/followers-73207b872f42b7a6.js"],"/hardware-info":[g,c,e,a,t,n,u,"static/chunks/pages/hardware-info-4dcdf4aa6510006e.js"],"/help":[e,a,"static/chunks/132-69ec1de6a8e27de6.js","static/chunks/pages/help-3dd6da50dde27e48.js"],"/logs":[s,c,f,"static/chunks/pages/logs-d10676db469afea0.js"],"/upgrade":[s,"static/chunks/275-35d1a6aef8ecf26a.js","static/chunks/pages/upgrade-6c4ec4a032ab7232.js"],"/viewer-info":[g,c,e,a,t,n,u,"static/chunks/pages/viewer-info-a9586b5d2ecea7e8.js"],"/webhooks":[s,"static/chunks/pages/webhooks-8b96f4afcc72aba4.js"],sortedPages:["/","/_app","/_error","/access-tokens","/actions","/chat/messages","/chat/users","/config-chat","/config-federation","/config-public-details","/config-server-details","/config-social-items","/config-storage","/config-video","/federation/actions","/federation/followers","/hardware-info","/help","/logs","/upgrade","/viewer-info","/webhooks"]}}("static/chunks/829-c8d1f3db438c210b.js","static/chunks/91-5f5f536776e2d9c6.js","static/chunks/961-1db4468ca0742ea4.js","static/chunks/751-f932ff7ec3e1342a.js","static/chunks/763-6084d4b3c149b8f4.js","static/chunks/533-2f63c37b8986cca1.js","static/chunks/910-ed07ccf32f311d03.js","static/chunks/429-613793ce22468b22.js","static/chunks/29107295-2c3ce868677a27a4.js","static/chunks/464-deae2b2f674a34de.js","static/chunks/17-8c3836887f4f3962.js","static/chunks/578-b2fdca9619a3031e.js","static/chunks/36bcf0ca-c1f70baa5cd8cbbf.js","static/chunks/958-d85597c88a5651f8.js"),self.__BUILD_MANIFEST_CB&&self.__BUILD_MANIFEST_CB();

static/admin/_next/static/S0l4GknIl5ifWnPqwFnrr/_middlewareManifest.js

@@ -0,0 +1 @@
+self.__MIDDLEWARE_MANIFEST=[];self.__MIDDLEWARE_MANIFEST_CB&&self.__MIDDLEWARE_MANIFEST_CB()

static/admin/_next/static/S0l4GknIl5ifWnPqwFnrr/_ssgManifest.js

@@ -0,0 +1 @@
+self.__SSG_MANIFEST=new Set,self.__SSG_MANIFEST_CB&&self.__SSG_MANIFEST_CB();