Merge branch 'main' of github.com:matrix-org/dendrite into gh-pages

.github/workflows/dendrite.yml

@@ -280,6 +280,8 @@ jobs:
         with:
           go-version: "stable"
           cache: true
+      - name: Docker version
+        run: docker version
       - name: Build upgrade-tests
         run: go build ./cmd/dendrite-upgrade-tests
       - name: Test upgrade (PostgreSQL)
@@ -300,6 +302,8 @@ jobs:
         with:
           go-version: "stable"
           cache: true
+      - name: Docker version
+        run: docker version
       - name: Build upgrade-tests
         run: go build ./cmd/dendrite-upgrade-tests
       - name: Test upgrade (PostgreSQL)

.github/workflows/helm.yml

@@ -32,7 +32,7 @@ jobs:
           version: v3.10.0
 
       - name: Run chart-releaser
-        uses: helm/chart-releaser-action@v1.4.1
+        uses: helm/chart-releaser-action@ed43eb303604cbc0eeec8390544f7748dc6c790d # specific commit, since `mark_as_latest` is not yet in a release
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
         with:

.github/workflows/schedules.yaml

@@ -128,7 +128,7 @@ jobs:
         # See https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-Readme.md specifically GOROOT_1_17_X64
         run: |
           sudo apt-get update && sudo apt-get install -y libolm3 libolm-dev
-          go get -v github.com/gotesttools/gotestfmt/v2/cmd/gotestfmt@latest
+          go install github.com/gotesttools/gotestfmt/v2/cmd/gotestfmt@latest
       - name: Run actions/checkout@v3 for dendrite
         uses: actions/checkout@v3
         with:

CHANGES.md

@@ -1,5 +1,24 @@
 # Changelog
 
+## Dendrite 0.13.3 (2023-09-28)
+
+### Fixes:
+
+- The `user_id` query parameter when authenticating is now used correctly (contributed by [tulir](https://github.com/tulir))
+- Invitations are now correctly pushed to devices
+- A bug which could result in the corruption of `m.direct` account data has been fixed 
+
+### Features
+
+- [Sliding Sync proxy](https://github.com/matrix-org/sliding-sync) can be configured in the `/.well-known/matrix/client` response
+- Room version 11 is now supported
+- Clients can request the `federation` `event_format` when creating filters
+- Many under the hood improvements for [MSC4014: Pseudonymous Identities](https://github.com/matrix-org/matrix-spec-proposals/blob/kegan/pseudo-ids/proposals/4014-pseudonymous-identities.md)
+
+### Other
+
+- Dendrite now requires Go 1.20 if building from source
+
 ## Dendrite 0.13.2 (2023-08-23)
 
 ### Fixes:

README.md

@@ -36,7 +36,7 @@ If you have further questions, please take a look at [our FAQ](docs/FAQ.md) or j
 See the [Planning your Installation](https://matrix-org.github.io/dendrite/installation/planning) page for
 more information on requirements.
 
-To build Dendrite, you will need Go 1.18 or later.
+To build Dendrite, you will need Go 1.20 or later.
 
 For a usable federating Dendrite deployment, you will also need:
 

appservice/consumers/roomserver.go

@@ -128,7 +128,7 @@ func (s *OutputRoomEventConsumer) onMessage(
 			if len(output.NewRoomEvent.AddsStateEventIDs) > 0 {
 				newEventID := output.NewRoomEvent.Event.EventID()
 				eventsReq := &api.QueryEventsByIDRequest{
-					RoomID:   output.NewRoomEvent.Event.RoomID(),
+					RoomID:   output.NewRoomEvent.Event.RoomID().String(),
 					EventIDs: make([]string, 0, len(output.NewRoomEvent.AddsStateEventIDs)),
 				}
 				eventsRes := &api.QueryEventsByIDResponse{}
@@ -236,11 +236,7 @@ func (s *appserviceState) backoffAndPause(err error) error {
 // TODO: This should be cached, see https://github.com/matrix-org/dendrite/issues/1682
 func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Context, event *types.HeaderedEvent, appservice *config.ApplicationService) bool {
 	user := ""
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	userID, err := s.rsAPI.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID())
-	if err != nil {
-		return false
-	}
-	userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
 	if err == nil {
 		user = userID.String()
 	}
@@ -250,7 +246,7 @@ func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Cont
 		return false
 	case appservice.IsInterestedInUserID(user):
 		return true
-	case appservice.IsInterestedInRoomID(event.RoomID()):
+	case appservice.IsInterestedInRoomID(event.RoomID().String()):
 		return true
 	}
 
@@ -261,7 +257,7 @@ func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Cont
 	}
 
 	// Check all known room aliases of the room the event came from
-	queryReq := api.GetAliasesForRoomIDRequest{RoomID: event.RoomID()}
+	queryReq := api.GetAliasesForRoomIDRequest{RoomID: event.RoomID().String()}
 	var queryRes api.GetAliasesForRoomIDResponse
 	if err := s.rsAPI.GetAliasesForRoomID(ctx, &queryReq, &queryRes); err == nil {
 		for _, alias := range queryRes.Aliases {
@@ -272,7 +268,7 @@ func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Cont
 	} else {
 		log.WithFields(log.Fields{
 			"appservice": appservice.ID,
-			"room_id":    event.RoomID(),
+			"room_id":    event.RoomID().String(),
 		}).WithError(err).Errorf("Unable to get aliases for room")
 	}
 
@@ -288,7 +284,7 @@ func (s *OutputRoomEventConsumer) appserviceJoinedAtEvent(ctx context.Context, e
 	// until we have a lighter way of checking the state before the event that
 	// doesn't involve state res, then this is probably OK.
 	membershipReq := &api.QueryMembershipsForRoomRequest{
-		RoomID:     event.RoomID(),
+		RoomID:     event.RoomID().String(),
 		JoinedOnly: true,
 	}
 	membershipRes := &api.QueryMembershipsForRoomResponse{}
@@ -317,7 +313,7 @@ func (s *OutputRoomEventConsumer) appserviceJoinedAtEvent(ctx context.Context, e
 	} else {
 		log.WithFields(log.Fields{
 			"appservice": appservice.ID,
-			"room_id":    event.RoomID(),
+			"room_id":    event.RoomID().String(),
 		}).WithError(err).Errorf("Unable to get membership for room")
 	}
 	return false

are-we-synapse-yet.list

@@ -945,3 +945,11 @@ rmv User can invite remote user to room with version 10
 rmv Remote user can backfill in a room with version 10
 rmv Can reject invites over federation for rooms with version 10
 rmv Can receive redactions from regular users over federation in room version 10
+rmv User can create and send/receive messages in a room with version 11
+rmv local user can join room with version 11
+rmv User can invite local user to room with version 11
+rmv remote user can join room with version 11
+rmv User can invite remote user to room with version 11
+rmv Remote user can backfill in a room with version 11
+rmv Can reject invites over federation for rooms with version 11
+rmv Can receive redactions from regular users over federation in room version 11

clientapi/routing/redaction.go

@@ -35,6 +35,7 @@ import (
 
 type redactionContent struct {
 	Reason  string `json:"reason"`
+	Redacts string `json:"redacts"`
 }
 
 type redactionResponse struct {
@@ -98,7 +99,7 @@ func SendRedaction(
 			JSON: spec.NotFound("unknown event ID"), // TODO: is it ok to leak existence?
 		}
 	}
-	if ev.RoomID() != roomID {
+	if ev.RoomID().String() != roomID {
 		return util.JSONResponse{
 			Code: 400,
 			JSON: spec.NotFound("cannot redact event in another room"),
@@ -151,6 +152,11 @@ func SendRedaction(
 		Type:     spec.MRoomRedaction,
 		Redacts:  eventID,
 	}
+
+	// Room version 11 expects the "redacts" field on the
+	// content field, so add it here as well
+	r.Redacts = eventID
+
 	err = proto.SetContent(r)
 	if err != nil {
 		util.GetLogger(req.Context()).WithError(err).Error("proto.SetContent failed")

clientapi/routing/sendevent.go

@@ -263,7 +263,11 @@ func SendEvent(
 }
 
 func updatePowerLevels(req *http.Request, r map[string]interface{}, roomID string, rsAPI api.ClientRoomserverAPI) error {
-	userMap := r["users"].(map[string]interface{})
+	users, ok := r["users"]
+	if !ok {
+		return nil
+	}
+	userMap := users.(map[string]interface{})
 	validRoomID, err := spec.NewRoomID(roomID)
 	if err != nil {
 		return err
@@ -277,7 +281,8 @@ func updatePowerLevels(req *http.Request, r map[string]interface{}, roomID strin
 		if err != nil {
 			return err
 		} else if senderID == nil {
-			return fmt.Errorf("sender ID not found for %s in %s", uID, *validRoomID)
+			util.GetLogger(req.Context()).Warnf("sender ID not found for %s in %s", uID, *validRoomID)
+			continue
 		}
 		userMap[string(*senderID)] = level
 		delete(userMap, user)
@@ -437,7 +442,7 @@ func generateSendEvent(
 				JSON: spec.BadJSON("Cannot unmarshal the event content."),
 			}
 		}
-		if content["replacement_room"] == e.RoomID() {
+		if content["replacement_room"] == e.RoomID().String() {
 			return nil, &util.JSONResponse{
 				Code: http.StatusBadRequest,
 				JSON: spec.InvalidParam("Cannot send tombstone event that points to the same room."),

clientapi/routing/state.go

@@ -172,28 +172,16 @@ func OnIncomingStateRequest(ctx context.Context, device *userapi.Device, rsAPI a
 			}
 		}
 		for _, ev := range stateAfterRes.StateEvents {
-			sender := spec.UserID{}
+			clientEvent, err := synctypes.ToClientEvent(ev, synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-			evRoomID, err := spec.NewRoomID(ev.RoomID())
+				return rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
+			})
 			if err != nil {
-				util.GetLogger(ctx).WithError(err).Error("Event roomID is invalid")
+				util.GetLogger(ctx).WithError(err).Error("Failed converting to ClientEvent")
 				continue
 			}
-			userID, err := rsAPI.QueryUserIDForSender(ctx, *evRoomID, ev.SenderID())
-			if err == nil && userID != nil {
-				sender = *userID
-			}
-
-			sk := ev.StateKey()
-			if sk != nil && *sk != "" {
-				skUserID, err := rsAPI.QueryUserIDForSender(ctx, *evRoomID, spec.SenderID(*ev.StateKey()))
-				if err == nil && skUserID != nil {
-					skString := skUserID.String()
-					sk = &skString
-				}
-			}
 			stateEvents = append(
 				stateEvents,
-				synctypes.ToClientEvent(ev, synctypes.FormatAll, sender, sk),
+				*clientEvent,
 			)
 		}
 	}

cmd/dendrite-demo-yggdrasil/README.md

@@ -1,6 +1,6 @@
 # Yggdrasil Demo
 
-This is the Dendrite Yggdrasil demo! It's easy to get started - all you need is Go 1.18 or later.
+This is the Dendrite Yggdrasil demo! It's easy to get started - all you need is Go 1.20 or later.
 
 To run the homeserver, start at the root of the Dendrite repository and run:
 

cmd/dendrite-upgrade-tests/main.go

@@ -7,7 +7,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -55,7 +54,7 @@ var latest, _ = semver.NewVersion("v6.6.6") // Dummy version, used as "HEAD"
 // due to the error:
 // When using COPY with more than one source file, the destination must be a directory and end with a /
 // We need to run a postgres anyway, so use the dockerfile associated with Complement instead.
-const DockerfilePostgreSQL = `FROM golang:1.18-buster as build
+const DockerfilePostgreSQL = `FROM golang:1.20-bookworm as build
 RUN apt-get update && apt-get install -y postgresql
 WORKDIR /build
 ARG BINARY
@@ -74,16 +73,16 @@ RUN ./generate-keys --private-key matrix_key.pem --tls-cert server.crt --tls-key
 # Replace the connection string with a single postgres DB, using user/db = 'postgres' and no password
 RUN sed -i "s%connection_string:.*$%connection_string: postgresql://postgres@localhost/postgres?sslmode=disable%g" dendrite.yaml
 # No password when connecting over localhost
-RUN sed -i "s%127.0.0.1/32            md5%127.0.0.1/32            trust%g" /etc/postgresql/11/main/pg_hba.conf
+RUN sed -i "s%127.0.0.1/32            scram-sha-256%127.0.0.1/32            trust%g" /etc/postgresql/15/main/pg_hba.conf
 # Bump up max conns for moar concurrency
-RUN sed -i 's/max_connections = 100/max_connections = 2000/g' /etc/postgresql/11/main/postgresql.conf
+RUN sed -i 's/max_connections = 100/max_connections = 2000/g' /etc/postgresql/15/main/postgresql.conf
 RUN sed -i 's/max_open_conns:.*$/max_open_conns: 100/g' dendrite.yaml
 
 # This entry script starts postgres, waits for it to be up then starts dendrite
 RUN echo '\
 #!/bin/bash -eu \n\
 pg_lsclusters \n\
-pg_ctlcluster 11 main start \n\
+pg_ctlcluster 15 main start \n\
  \n\
 until pg_isready \n\
 do \n\
@@ -101,7 +100,7 @@ ENV BINARY=dendrite
 EXPOSE 8008 8448
 CMD /build/run_dendrite.sh`
 
-const DockerfileSQLite = `FROM golang:1.18-buster as build
+const DockerfileSQLite = `FROM golang:1.20-bookworm as build
 RUN apt-get update && apt-get install -y postgresql
 WORKDIR /build
 ARG BINARY
@@ -119,7 +118,7 @@ RUN ./generate-keys --private-key matrix_key.pem --tls-cert server.crt --tls-key
 
 # Make sure the SQLite databases are in a persistent location, we're already mapping
 # the postgresql folder so let's just use that for simplicity
-RUN sed -i "s%connection_string:.file:%connection_string: file:\/var\/lib\/postgresql\/11\/main\/%g" dendrite.yaml
+RUN sed -i "s%connection_string:.file:%connection_string: file:\/var\/lib\/postgresql\/15\/main\/%g" dendrite.yaml
 
 # This entry script starts postgres, waits for it to be up then starts dendrite
 RUN echo '\
@@ -402,7 +401,7 @@ func runImage(dockerClient *client.Client, volumeName string, branchNameToImageI
 			{
 				Type:   mount.TypeVolume,
 				Source: volumeName,
-				Target: "/var/lib/postgresql/11/main",
+				Target: "/var/lib/postgresql/15/main",
 			},
 		},
 	}, nil, nil, "dendrite_upgrade_test_"+branchName)
@@ -515,7 +514,7 @@ func testCreateAccount(dockerClient *client.Client, version *semver.Version, con
 	}
 	defer response.Close()
 
-	data, err := ioutil.ReadAll(response.Reader)
+	data, err := io.ReadAll(response.Reader)
 	if err != nil {
 		return err
 	}
@@ -557,8 +556,8 @@ func cleanup(dockerClient *client.Client) {
 	})
 	for _, c := range containers {
 		log.Printf("Removing container: %v %v\n", c.ID, c.Names)
-		s := time.Second
+		timeout := 1
-		_ = dockerClient.ContainerStop(context.Background(), c.ID, &s)
+		_ = dockerClient.ContainerStop(context.Background(), c.ID, container.StopOptions{Timeout: &timeout})
 		_ = dockerClient.ContainerRemove(context.Background(), c.ID, types.ContainerRemoveOptions{
 			Force: true,
 		})
@@ -592,7 +591,7 @@ func main() {
 	branchToImageID := buildDendriteImages(httpClient, dockerClient, *flagTempDir, *flagBuildConcurrency, versions)
 
 	// make a shared postgres volume
-	volume, err := dockerClient.VolumeCreate(context.Background(), volume.VolumeCreateBody{
+	volume, err := dockerClient.VolumeCreate(context.Background(), volume.CreateOptions{
 		Name: "dendrite_upgrade_test",
 		Labels: map[string]string{
 			dendriteUpgradeTestLabel: "yes",

docs/Gemfile.lock

@@ -14,7 +14,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.9)
+    commonmarker (0.23.10)
     concurrent-ruby (1.2.0)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)

docs/administration/5_optimisation.md

@@ -95,7 +95,7 @@ Consider enabling the DNS cache by modifying the `global` section of your config
 ## Time synchronisation
 
 Matrix relies heavily on TLS which requires the system time to be correct. If the clock
-drifts then you may find that federation no works reliably (or at all) and clients may
+drifts then you may find that federation will not work reliably (or at all) and clients may
 struggle to connect to your Dendrite server.
 
 Ensure that the time is synchronised on your system by enabling NTP sync.

docs/installation/1_planning.md

@@ -59,7 +59,7 @@ In order to install Dendrite, you will need to satisfy the following dependencie
 
 ### Go
 
-At this time, Dendrite supports being built with Go 1.18 or later. We do not support building
+At this time, Dendrite supports being built with Go 1.20 or later. We do not support building
 Dendrite with older versions of Go than this. If you are installing Go using a package manager,
 you should check (by running `go version`) that you are using a suitable version before you start.
 

federationapi/consumers/roomserver.go

@@ -176,7 +176,7 @@ func (s *OutputRoomEventConsumer) processMessage(ore api.OutputNewRoomEvent, rew
 	// Finally, work out if there are any more events missing.
 	if len(missingEventIDs) > 0 {
 		eventsReq := &api.QueryEventsByIDRequest{
-			RoomID:   ore.Event.RoomID(),
+			RoomID:   ore.Event.RoomID().String(),
 			EventIDs: missingEventIDs,
 		}
 		eventsRes := &api.QueryEventsByIDResponse{}
@@ -205,7 +205,7 @@ func (s *OutputRoomEventConsumer) processMessage(ore api.OutputNewRoomEvent, rew
 	// talking to the roomserver
 	oldJoinedHosts, err := s.db.UpdateRoom(
 		s.ctx,
-		ore.Event.RoomID(),
+		ore.Event.RoomID().String(),
 		addsJoinedHosts,
 		ore.RemovesStateEventIDs,
 		rewritesState, // if we're re-writing state, nuke all joined hosts before adding
@@ -218,7 +218,7 @@ func (s *OutputRoomEventConsumer) processMessage(ore api.OutputNewRoomEvent, rew
 	if s.cfg.Matrix.Presence.EnableOutbound && len(addsJoinedHosts) > 0 && ore.Event.Type() == spec.MRoomMember && ore.Event.StateKey() != nil {
 		membership, _ := ore.Event.Membership()
 		if membership == spec.Join {
-			s.sendPresence(ore.Event.RoomID(), addsJoinedHosts)
+			s.sendPresence(ore.Event.RoomID().String(), addsJoinedHosts)
 		}
 	}
 
@@ -376,7 +376,7 @@ func (s *OutputRoomEventConsumer) joinedHostsAtEvent(
 	}
 
 	// handle peeking hosts
-	inboundPeeks, err := s.db.GetInboundPeeks(s.ctx, ore.Event.PDU.RoomID())
+	inboundPeeks, err := s.db.GetInboundPeeks(s.ctx, ore.Event.PDU.RoomID().String())
 	if err != nil {
 		return nil, err
 	}
@@ -409,12 +409,8 @@ func JoinedHostsFromEvents(ctx context.Context, evs []gomatrixserverlib.PDU, rsA
 		if membership != spec.Join {
 			continue
 		}
-		validRoomID, err := spec.NewRoomID(ev.RoomID())
-		if err != nil {
-			return nil, err
-		}
 		var domain spec.ServerName
-		userID, err := rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*ev.StateKey()))
+		userID, err := rsAPI.QueryUserIDForSender(ctx, ev.RoomID(), spec.SenderID(*ev.StateKey()))
 		if err != nil {
 			if errors.As(err, new(base64.CorruptInputError)) {
 				// Fallback to using the "old" way of getting the user domain, avoids
@@ -510,7 +506,7 @@ func (s *OutputRoomEventConsumer) lookupStateEvents(
 	// At this point the missing events are neither the event itself nor are
 	// they present in our local database. Our only option is to fetch them
 	// from the roomserver using the query API.
-	eventReq := api.QueryEventsByIDRequest{EventIDs: missing, RoomID: event.RoomID()}
+	eventReq := api.QueryEventsByIDRequest{EventIDs: missing, RoomID: event.RoomID().String()}
 	var eventResp api.QueryEventsByIDResponse
 	if err := s.rsAPI.QueryEventsByID(s.ctx, &eventReq, &eventResp); err != nil {
 		return nil, err

federationapi/federationapi_test.go

@@ -146,7 +146,7 @@ func (f *fedClient) SendJoin(ctx context.Context, origin, s spec.ServerName, eve
 	f.fedClientMutex.Lock()
 	defer f.fedClientMutex.Unlock()
 	for _, r := range f.allowJoins {
-		if r.ID == event.RoomID() {
+		if r.ID == event.RoomID().String() {
 			r.InsertEvent(f.t, &types.HeaderedEvent{PDU: event})
 			f.t.Logf("Join event: %v", event.EventID())
 			res.StateEvents = types.NewEventJSONsFromHeaderedEvents(r.CurrentState())

federationapi/internal/perform.go

@@ -548,11 +548,7 @@ func (r *FederationInternalAPI) SendInvite(
 	event gomatrixserverlib.PDU,
 	strippedState []gomatrixserverlib.InviteStrippedState,
 ) (gomatrixserverlib.PDU, error) {
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	inviter, err := r.rsAPI.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID())
-	if err != nil {
-		return nil, err
-	}
-	inviter, err := r.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
 	if err != nil {
 		return nil, err
 	}
@@ -575,7 +571,7 @@ func (r *FederationInternalAPI) SendInvite(
 	logrus.WithFields(logrus.Fields{
 		"event_id":     event.EventID(),
 		"user_id":      *event.StateKey(),
-		"room_id":      event.RoomID(),
+		"room_id":      event.RoomID().String(),
 		"room_version": event.Version(),
 		"destination":  destination,
 	}).Info("Sending invite")

federationapi/queue/queue.go

@@ -218,7 +218,7 @@ func (oqs *OutgoingQueues) SendEvent(
 		if api.IsServerBannedFromRoom(
 			oqs.process.Context(),
 			oqs.rsAPI,
-			ev.RoomID(),
+			ev.RoomID().String(),
 			destination,
 		) {
 			delete(destmap, destination)

federationapi/queue/queue_test.go

@@ -104,7 +104,7 @@ func (f *stubFederationClient) P2PSendTransactionToRelay(ctx context.Context, u
 
 func mustCreatePDU(t *testing.T) *types.HeaderedEvent {
 	t.Helper()
-	content := `{"type":"m.room.message"}`
+	content := `{"type":"m.room.message", "room_id":"!room:a"}`
 	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionV10).NewEventFromTrustedJSON([]byte(content), false)
 	if err != nil {
 		t.Fatalf("failed to create event: %v", err)

federationapi/routing/backfill.go

@@ -109,7 +109,7 @@ func Backfill(
 
 	var ev *types.HeaderedEvent
 	for _, ev = range res.Events {
-		if ev.RoomID() == roomID {
+		if ev.RoomID().String() == roomID {
 			evs = append(evs, ev.PDU)
 		}
 	}

federationapi/routing/eventauth.go

@@ -42,10 +42,10 @@ func GetEventAuth(
 		return *resErr
 	}
 
-	if event.RoomID() != roomID {
+	if event.RoomID().String() != roomID {
 		return util.JSONResponse{Code: http.StatusNotFound, JSON: spec.NotFound("event does not belong to this room")}
 	}
-	resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID())
+	resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID().String())
 	if resErr != nil {
 		return *resErr
 	}

federationapi/routing/events.go

@@ -42,7 +42,7 @@ func GetEvent(
 		return *err
 	}
 
-	err = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID())
+	err = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID().String())
 	if err != nil {
 		return *err
 	}

federationapi/routing/leave.go

@@ -211,7 +211,7 @@ func SendLeave(
 	}
 
 	// Check that the room ID is correct.
-	if event.RoomID() != roomID {
+	if event.RoomID().String() != roomID {
 		return util.JSONResponse{
 			Code: http.StatusBadRequest,
 			JSON: spec.BadJSON("The room ID in the request path must match the room ID in the leave event JSON"),
@@ -242,14 +242,7 @@ func SendLeave(
 	// Check that the sender belongs to the server that is sending us
 	// the request. By this point we've already asserted that the sender
 	// and the state key are equal so we don't need to check both.
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	sender, err := rsAPI.QueryUserIDForSender(httpReq.Context(), event.RoomID(), event.SenderID())
-	if err != nil {
-		return util.JSONResponse{
-			Code: http.StatusBadRequest,
-			JSON: spec.BadJSON("Room ID is invalid."),
-		}
-	}
-	sender, err := rsAPI.QueryUserIDForSender(httpReq.Context(), *validRoomID, event.SenderID())
 	if err != nil {
 		return util.JSONResponse{
 			Code: http.StatusForbidden,

federationapi/routing/missingevents.go

@@ -87,7 +87,7 @@ func filterEvents(
 ) []*types.HeaderedEvent {
 	ref := events[:0]
 	for _, ev := range events {
-		if ev.RoomID() == roomID {
+		if ev.RoomID().String() == roomID {
 			ref = append(ref, ev)
 		}
 	}

federationapi/routing/state.go

@@ -113,10 +113,10 @@ func getState(
 		return nil, nil, resErr
 	}
 
-	if event.RoomID() != roomID {
+	if event.RoomID().String() != roomID {
 		return nil, nil, &util.JSONResponse{Code: http.StatusNotFound, JSON: spec.NotFound("event does not belong to this room")}
 	}
-	resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID())
+	resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID, event.RoomID().String())
 	if resErr != nil {
 		return nil, nil, resErr
 	}

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/blevesearch/bleve/v2 v2.3.8
 	github.com/codeclysm/extract v2.2.0+incompatible
 	github.com/dgraph-io/ristretto v0.1.1
-	github.com/docker/docker v20.10.24+incompatible
+	github.com/docker/docker v24.0.5+incompatible
 	github.com/docker/go-connections v0.4.0
 	github.com/getsentry/sentry-go v0.14.0
 	github.com/gologme/log v1.3.0
@@ -22,7 +22,7 @@ require (
 	github.com/matrix-org/dugong v0.0.0-20210921133753-66e6b1c67e2e
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91
 	github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20230823153616-484e7693bb8d
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20230926165653-79fcff283fc4
 	github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7
 	github.com/matrix-org/util v0.0.0-20221111132719-399730281e66
 	github.com/mattn/go-sqlite3 v1.14.17
@@ -36,18 +36,18 @@ require (
 	github.com/prometheus/client_golang v1.16.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/stretchr/testify v1.8.2
-	github.com/tidwall/gjson v1.16.0
+	github.com/tidwall/gjson v1.17.0
 	github.com/tidwall/sjson v1.2.5
 	github.com/uber/jaeger-client-go v2.30.0+incompatible
 	github.com/uber/jaeger-lib v2.4.1+incompatible
 	github.com/yggdrasil-network/yggdrasil-go v0.4.6
 	go.uber.org/atomic v1.10.0
-	golang.org/x/crypto v0.12.0
+	golang.org/x/crypto v0.13.0
 	golang.org/x/exp v0.0.0-20230809150735-7b3493d9a819
 	golang.org/x/image v0.5.0
 	golang.org/x/mobile v0.0.0-20221020085226-b36e6246172e
 	golang.org/x/sync v0.3.0
-	golang.org/x/term v0.11.0
+	golang.org/x/term v0.12.0
 	gopkg.in/h2non/bimg.v1 v1.1.9
 	gopkg.in/yaml.v2 v2.4.0
 	gotest.tools/v3 v3.4.0
@@ -124,8 +124,8 @@ require (
 	go.etcd.io/bbolt v1.3.6 // indirect
 	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/net v0.14.0 // indirect
-	golang.org/x/sys v0.11.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
-	golang.org/x/text v0.12.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.12.0 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
@@ -143,4 +143,4 @@ require (
 	modernc.org/token v1.0.1 // indirect
 )
 
-go 1.18
+go 1.20

go.sum

@@ -89,8 +89,8 @@ github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczC
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/docker/distribution v2.8.2+incompatible h1:T3de5rq0dB1j30rp0sA2rER+m322EBzniBPB6ZIzuh8=
 github.com/docker/distribution v2.8.2+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/docker v20.10.24+incompatible h1:Ugvxm7a8+Gz6vqQYQQ2W7GYq5EUPaAiuPgIfVyI3dYE=
+github.com/docker/docker v24.0.5+incompatible h1:WmgcE4fxyI6EEXxBRxsHnZXrO1pQ3smi0k/jho4HLeY=
-github.com/docker/docker v20.10.24+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v24.0.5+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
@@ -208,8 +208,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91 h1:s7fexw
 github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530 h1:kHKxCOLcHH8r4Fzarl4+Y3K5hjothkVW5z7T1dUM11U=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230823153616-484e7693bb8d h1:yFoT2nyjD4TFrgYMJGgrotFbTLjaYKfZbRmnsj7lvZE=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230926165653-79fcff283fc4 h1:UuXfC7b29RBDfMdLmggeF3opu3XuGi8bNT9SKZtZc3I=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230823153616-484e7693bb8d/go.mod h1:H9V9N3Uqn1bBJqYJNGK1noqtgJTaCEhtTdcH/mp50uU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230926165653-79fcff283fc4/go.mod h1:H9V9N3Uqn1bBJqYJNGK1noqtgJTaCEhtTdcH/mp50uU=
 github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7 h1:6t8kJr8i1/1I5nNttw6nn1ryQJgzVlBmSGgPiiaTdw4=
 github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7/go.mod h1:ReWMS/LoVnOiRAdq9sNUC2NZnd1mZkMNB52QhpTRWjg=
 github.com/matrix-org/util v0.0.0-20221111132719-399730281e66 h1:6z4KxomXSIGWqhHcfzExgkH3Z3UkIXry4ibJS4Aqz2Y=
@@ -318,8 +318,8 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
-github.com/tidwall/gjson v1.16.0 h1:SyXa+dsSPpUlcwEDuKuEBJEz5vzTvOea+9rjyYodQFg=
+github.com/tidwall/gjson v1.17.0 h1:/Jocvlh98kcTfpN2+JzGQWQcqrPQwDrVEMApx/M5ZwM=
-github.com/tidwall/gjson v1.16.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/gjson v1.17.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
 github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
 github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
 github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
@@ -354,8 +354,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
+golang.org/x/crypto v0.13.0 h1:mvySKfSWJ+UKUii46M40LOvyWfN0s2U+46/jDd0e6Ck=
-golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190125153040-c74c464bbbf2/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -418,19 +418,19 @@ golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20221010170243-090e33056c14/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
+golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
-golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.11.0 h1:F9tnn/DA/Im8nCwm+fX+1/eBwi4qFjRT++MhtVC4ZX0=
+golang.org/x/term v0.12.0 h1:/ZfYdc3zq+q02Rv9vGqTeSItdzZTSNDmfTi0mBAuidU=
-golang.org/x/term v0.11.0/go.mod h1:zC9APTIj3jG3FdV/Ons+XE1riIZXG4aZ4GTHiPZJPIU=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

helm/dendrite/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: dendrite
-version: "0.13.2"
+version: "0.13.4"
-appVersion: "0.13.2"
+appVersion: "0.13.3"
 description: Dendrite Matrix Homeserver
 type: application
 keywords:

helm/dendrite/README.md

@@ -1,7 +1,7 @@
 
 # dendrite
 
-![Version: 0.13.2](https://img.shields.io/badge/Version-0.13.2-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.13.2](https://img.shields.io/badge/AppVersion-0.13.2-informational?style=flat-square)
+![Version: 0.13.4](https://img.shields.io/badge/Version-0.13.4-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.13.3](https://img.shields.io/badge/AppVersion-0.13.3-informational?style=flat-square)
 Dendrite Matrix Homeserver
 
 Status: **NOT PRODUCTION READY**
@@ -63,9 +63,6 @@ Create a folder `appservices` and place your configurations in there.  The confi
 | strategy.type | string | `"RollingUpdate"` | Strategy to use for rolling updates (e.g. Recreate, RollingUpdate) If you are using ReadWriteOnce volumes, you should probably use Recreate |
 | strategy.rollingUpdate.maxUnavailable | string | `"25%"` | Maximum number of pods that can be unavailable during the update process |
 | strategy.rollingUpdate.maxSurge | string | `"25%"` | Maximum number of pods that can be scheduled above the desired number of pods |
-| strategy.type | string | `"RollingUpdate"` | Strategy to use for rolling updates (e.g. Recreate, RollingUpdate) If you are using ReadWriteOnce volumes, you should probably use Recreate |
-| strategy.rollingUpdate.maxUnavailable | string | `"25%"` | Maximum number of pods that can be unavailable during the update process |
-| strategy.rollingUpdate.maxSurge | string | `"25%"` | Maximum number of pods that can be scheduled above the desired number of pods |
 | dendrite_config.version | int | `2` |  |
 | dendrite_config.global.server_name | string | `""` | **REQUIRED** Servername for this Dendrite deployment. |
 | dendrite_config.global.private_key | string | `"/etc/dendrite/secrets/signing.key"` | The private key to use. (**NOTE**: This is overriden in Helm) |

helm/dendrite/templates/deployment.yaml

@@ -26,13 +26,6 @@ spec:
       annotations:
         confighash: secret-{{ .Values.dendrite_config | toYaml | sha256sum | trunc 32 }}
     spec:
-      strategy:
-        type: {{ $.Values.strategy.type }}
-        {{- if eq $.Values.strategy.type "RollingUpdate" }}
-        rollingUpdate:
-          maxSurge: {{ $.Values.strategy.rollingUpdate.maxSurge }}
-          maxUnavailable: {{ $.Values.strategy.rollingUpdate.maxUnavailable }}
-        {{- end }}
       volumes:
       - name: {{ include "dendrite.fullname" . }}-conf-vol
         secret:

helm/dendrite/templates/ingress.yaml

@@ -1,8 +1,8 @@
 {{- if .Values.ingress.enabled -}}
 {{- $fullName := include "dendrite.fullname" . -}}
 {{- $serverNameHost := .Values.dendrite_config.global.server_name -}}
-{{- $wellKnownServerHost := default $serverNameHost (regexFind "^[^:]+" .Values.dendrite_config.global.well_known_server_name) -}}
+{{- $wellKnownServerHost := default $serverNameHost (regexFind "^(\\[.+\\])?[^:]*" .Values.dendrite_config.global.well_known_server_name) -}}
-{{- $wellKnownClientHost := default $serverNameHost (regexFind "^[^:]+" .Values.dendrite_config.global.well_known_client_name) -}}
+{{- $wellKnownClientHost := default $serverNameHost (regexFind "//(\\[.+\\])?[^:/]*" .Values.dendrite_config.global.well_known_client_name | trimAll "/") -}}
 {{- $allHosts := list $serverNameHost $wellKnownServerHost $wellKnownClientHost | uniq -}}
 {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
 apiVersion: networking.k8s.io/v1

helm/dendrite/values.yaml

@@ -65,16 +65,6 @@ extraVolumeMounts: []
 # - mountPath: /etc/dendrite/extra-config
 #   name: extra-config
 
-strategy:
-  # -- Strategy to use for rolling updates (e.g. Recreate, RollingUpdate)
-  # If you are using ReadWriteOnce volumes, you should probably use Recreate
-  type: RollingUpdate
-  rollingUpdate:
-    # -- Maximum number of pods that can be unavailable during the update process
-    maxUnavailable: 25%
-    # -- Maximum number of pods that can be scheduled above the desired number of pods
-    maxSurge: 25%
-
 strategy:
   # -- Strategy to use for rolling updates (e.g. Recreate, RollingUpdate)
   # If you are using ReadWriteOnce volumes, you should probably use Recreate

internal/eventutil/events.go

@@ -176,15 +176,13 @@ func RedactEvent(ctx context.Context, redactionEvent, redactedEvent gomatrixserv
 		return fmt.Errorf("RedactEvent: redactionEvent isn't a redaction event, is '%s'", redactionEvent.Type())
 	}
 	redactedEvent.Redact()
-	validRoomID, err := spec.NewRoomID(redactionEvent.RoomID())
+	clientEvent, err := synctypes.ToClientEvent(redactionEvent, synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		return querier.QueryUserIDForSender(ctx, roomID, senderID)
+	})
 	if err != nil {
 		return err
 	}
-	senderID, err := querier.QueryUserIDForSender(ctx, *validRoomID, redactionEvent.SenderID())
+	redactedBecause := clientEvent
-	if err != nil {
-		return err
-	}
-	redactedBecause := synctypes.ToClientEvent(redactionEvent, synctypes.FormatSync, *senderID, redactionEvent.StateKey())
 	if err := redactedEvent.SetUnsignedField("redacted_because", redactedBecause); err != nil {
 		return err
 	}

internal/pushrules/evaluate.go

@@ -111,15 +111,11 @@ func ruleMatches(rule *Rule, kind Kind, event gomatrixserverlib.PDU, ec Evaluati
 		return patternMatches("content.body", *rule.Pattern, event)
 
 	case RoomKind:
-		return rule.RuleID == event.RoomID(), nil
+		return rule.RuleID == event.RoomID().String(), nil
 
 	case SenderKind:
 		userID := ""
-		validRoomID, err := spec.NewRoomID(event.RoomID())
+		sender, err := userIDForSender(event.RoomID(), event.SenderID())
-		if err != nil {
-			return false, err
-		}
-		sender, err := userIDForSender(*validRoomID, event.SenderID())
 		if err == nil {
 			userID = sender.String()
 		}

internal/pushrules/evaluate_test.go

@@ -13,7 +13,7 @@ func UserIDForSender(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID,
 }
 
 func TestRuleSetEvaluatorMatchEvent(t *testing.T) {
-	ev := mustEventFromJSON(t, `{}`)
+	ev := mustEventFromJSON(t, `{"room_id":"!room:a"}`)
 	defaultEnabled := &Rule{
 		RuleID:  ".default.enabled",
 		Default: true,
@@ -44,8 +44,8 @@ func TestRuleSetEvaluatorMatchEvent(t *testing.T) {
 		{"overrideRoom", RuleSet{Override: []*Rule{userEnabled}, Room: []*Rule{userEnabled2}}, userEnabled, ev},
 		{"overrideSender", RuleSet{Override: []*Rule{userEnabled}, Sender: []*Rule{userEnabled2}}, userEnabled, ev},
 		{"overrideUnderride", RuleSet{Override: []*Rule{userEnabled}, Underride: []*Rule{userEnabled2}}, userEnabled, ev},
-		{"reactions don't notify", *defaultRuleset, &mRuleReactionDefinition, mustEventFromJSON(t, `{"type":"m.reaction"}`)},
+		{"reactions don't notify", *defaultRuleset, &mRuleReactionDefinition, mustEventFromJSON(t, `{"room_id":"!room:a","type":"m.reaction"}`)},
-		{"receipts don't notify", *defaultRuleset, nil, mustEventFromJSON(t, `{"type":"m.receipt"}`)},
+		{"receipts don't notify", *defaultRuleset, nil, mustEventFromJSON(t, `{"room_id":"!room:a","type":"m.receipt"}`)},
 	}
 	for _, tst := range tsts {
 		t.Run(tst.Name, func(t *testing.T) {
@@ -70,28 +70,27 @@ func TestRuleMatches(t *testing.T) {
 		EventJSON string
 		Want      bool
 	}{
-		{"emptyOverride", OverrideKind, emptyRule, `{}`, true},
+		{"emptyOverride", OverrideKind, emptyRule, `{"room_id":"!room:example.com"}`, true},
-		{"emptyContent", ContentKind, emptyRule, `{}`, false},
+		{"emptyContent", ContentKind, emptyRule, `{"room_id":"!room:example.com"}`, false},
-		{"emptyRoom", RoomKind, emptyRule, `{}`, true},
 		{"emptySender", SenderKind, emptyRule, `{"room_id":"!room:example.com"}`, true},
-		{"emptyUnderride", UnderrideKind, emptyRule, `{}`, true},
+		{"emptyUnderride", UnderrideKind, emptyRule, `{"room_id":"!room:example.com"}`, true},
 
-		{"disabled", OverrideKind, Rule{}, `{}`, false},
+		{"disabled", OverrideKind, Rule{}, `{"room_id":"!room:example.com"}`, false},
 
-		{"overrideConditionMatch", OverrideKind, Rule{Enabled: true}, `{}`, true},
+		{"overrideConditionMatch", OverrideKind, Rule{Enabled: true}, `{"room_id":"!room:example.com"}`, true},
-		{"overrideConditionNoMatch", OverrideKind, Rule{Enabled: true, Conditions: []*Condition{{}}}, `{}`, false},
+		{"overrideConditionNoMatch", OverrideKind, Rule{Enabled: true, Conditions: []*Condition{{}}}, `{"room_id":"!room:example.com"}`, false},
 
-		{"underrideConditionMatch", UnderrideKind, Rule{Enabled: true}, `{}`, true},
+		{"underrideConditionMatch", UnderrideKind, Rule{Enabled: true}, `{"room_id":"!room:example.com"}`, true},
-		{"underrideConditionNoMatch", UnderrideKind, Rule{Enabled: true, Conditions: []*Condition{{}}}, `{}`, false},
+		{"underrideConditionNoMatch", UnderrideKind, Rule{Enabled: true, Conditions: []*Condition{{}}}, `{"room_id":"!room:example.com"}`, false},
 
-		{"contentMatch", ContentKind, Rule{Enabled: true, Pattern: pointer("b")}, `{"content":{"body":"abc"}}`, true},
+		{"contentMatch", ContentKind, Rule{Enabled: true, Pattern: pointer("b")}, `{"room_id":"!room:example.com","content":{"body":"abc"}}`, true},
-		{"contentNoMatch", ContentKind, Rule{Enabled: true, Pattern: pointer("d")}, `{"content":{"body":"abc"}}`, false},
+		{"contentNoMatch", ContentKind, Rule{Enabled: true, Pattern: pointer("d")}, `{"room_id":"!room:example.com","content":{"body":"abc"}}`, false},
 
 		{"roomMatch", RoomKind, Rule{Enabled: true, RuleID: "!room:example.com"}, `{"room_id":"!room:example.com"}`, true},
 		{"roomNoMatch", RoomKind, Rule{Enabled: true, RuleID: "!room:example.com"}, `{"room_id":"!otherroom:example.com"}`, false},
 
-		{"senderMatch", SenderKind, Rule{Enabled: true, RuleID: "@user:example.com"}, `{"sender":"@user:example.com","room_id":"!room:example.com"}`, true},
+		{"senderMatch", SenderKind, Rule{Enabled: true, RuleID: "@user:example.com"}, `{"room_id":"!room:example.com","sender":"@user:example.com","room_id":"!room:example.com"}`, true},
-		{"senderNoMatch", SenderKind, Rule{Enabled: true, RuleID: "@user:example.com"}, `{"sender":"@otheruser:example.com","room_id":"!room:example.com"}`, false},
+		{"senderNoMatch", SenderKind, Rule{Enabled: true, RuleID: "@user:example.com"}, `{"room_id":"!room:example.com","sender":"@otheruser:example.com","room_id":"!room:example.com"}`, false},
 	}
 	for _, tst := range tsts {
 		t.Run(tst.Name, func(t *testing.T) {
@@ -114,32 +113,32 @@ func TestConditionMatches(t *testing.T) {
 		WantMatch bool
 		WantErr   bool
 	}{
-		{Name: "empty", Cond: Condition{}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "empty", Cond: Condition{}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "empty", Cond: Condition{Kind: "unknownstring"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "empty", Cond: Condition{Kind: "unknownstring"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
 
 		// Neither of these should match because `content` is not a full string match,
 		// and `content.body` is not a string value.
-		{Name: "eventMatch", Cond: Condition{Kind: EventMatchCondition, Key: "content", Pattern: pointer("")}, EventJSON: `{"content":{}}`, WantMatch: false, WantErr: false},
+		{Name: "eventMatch", Cond: Condition{Kind: EventMatchCondition, Key: "content", Pattern: pointer("")}, EventJSON: `{"room_id":"!room:example.com","content":{}}`, WantMatch: false, WantErr: false},
-		{Name: "eventBodyMatch", Cond: Condition{Kind: EventMatchCondition, Key: "content.body", Is: "3", Pattern: pointer("")}, EventJSON: `{"content":{"body": "3"}}`, WantMatch: false, WantErr: false},
+		{Name: "eventBodyMatch", Cond: Condition{Kind: EventMatchCondition, Key: "content.body", Is: "3", Pattern: pointer("")}, EventJSON: `{"room_id":"!room:example.com","content":{"body": "3"}}`, WantMatch: false, WantErr: false},
-		{Name: "eventBodyMatch matches", Cond: Condition{Kind: EventMatchCondition, Key: "content.body", Pattern: pointer("world")}, EventJSON: `{"content":{"body": "hello world!"}}`, WantMatch: true, WantErr: false},
+		{Name: "eventBodyMatch matches", Cond: Condition{Kind: EventMatchCondition, Key: "content.body", Pattern: pointer("world")}, EventJSON: `{"room_id":"!room:example.com","content":{"body": "hello world!"}}`, WantMatch: true, WantErr: false},
-		{Name: "EventMatch missing pattern", Cond: Condition{Kind: EventMatchCondition, Key: "content.body"}, EventJSON: `{"content":{"body": "hello world!"}}`, WantMatch: false, WantErr: true},
+		{Name: "EventMatch missing pattern", Cond: Condition{Kind: EventMatchCondition, Key: "content.body"}, EventJSON: `{"room_id":"!room:example.com","content":{"body": "hello world!"}}`, WantMatch: false, WantErr: true},
 
-		{Name: "displayNameNoMatch", Cond: Condition{Kind: ContainsDisplayNameCondition}, EventJSON: `{"content":{"body":"something without displayname"}}`, WantMatch: false, WantErr: false},
+		{Name: "displayNameNoMatch", Cond: Condition{Kind: ContainsDisplayNameCondition}, EventJSON: `{"room_id":"!room:example.com","content":{"body":"something without displayname"}}`, WantMatch: false, WantErr: false},
-		{Name: "displayNameMatch", Cond: Condition{Kind: ContainsDisplayNameCondition}, EventJSON: `{"content":{"body":"hello Dear User, how are you?"}}`, WantMatch: true, WantErr: false},
+		{Name: "displayNameMatch", Cond: Condition{Kind: ContainsDisplayNameCondition}, EventJSON: `{"room_id":"!room:example.com","content":{"body":"hello Dear User, how are you?"}}`, WantMatch: true, WantErr: false},
 
-		{Name: "roomMemberCountLessNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<2"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "roomMemberCountLessNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<2"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "roomMemberCountLessMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<3"}, EventJSON: `{}`, WantMatch: true, WantErr: false},
+		{Name: "roomMemberCountLessMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<3"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: true, WantErr: false},
-		{Name: "roomMemberCountLessEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<=1"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "roomMemberCountLessEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<=1"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "roomMemberCountLessEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<=2"}, EventJSON: `{}`, WantMatch: true, WantErr: false},
+		{Name: "roomMemberCountLessEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "<=2"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: true, WantErr: false},
-		{Name: "roomMemberCountEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "==1"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "roomMemberCountEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "==1"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "roomMemberCountEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "==2"}, EventJSON: `{}`, WantMatch: true, WantErr: false},
+		{Name: "roomMemberCountEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: "==2"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: true, WantErr: false},
-		{Name: "roomMemberCountGreaterEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">=3"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "roomMemberCountGreaterEqualNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">=3"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "roomMemberCountGreaterEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">=2"}, EventJSON: `{}`, WantMatch: true, WantErr: false},
+		{Name: "roomMemberCountGreaterEqualMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">=2"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: true, WantErr: false},
-		{Name: "roomMemberCountGreaterNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">2"}, EventJSON: `{}`, WantMatch: false, WantErr: false},
+		{Name: "roomMemberCountGreaterNoMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">2"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: false, WantErr: false},
-		{Name: "roomMemberCountGreaterMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">1"}, EventJSON: `{}`, WantMatch: true, WantErr: false},
+		{Name: "roomMemberCountGreaterMatch", Cond: Condition{Kind: RoomMemberCountCondition, Is: ">1"}, EventJSON: `{"room_id":"!room:example.com"}`, WantMatch: true, WantErr: false},
 
-		{Name: "senderNotificationPermissionMatch", Cond: Condition{Kind: SenderNotificationPermissionCondition, Key: "powerlevel"}, EventJSON: `{"sender":"@poweruser:example.com"}`, WantMatch: true, WantErr: false},
+		{Name: "senderNotificationPermissionMatch", Cond: Condition{Kind: SenderNotificationPermissionCondition, Key: "powerlevel"}, EventJSON: `{"room_id":"!room:example.com","sender":"@poweruser:example.com"}`, WantMatch: true, WantErr: false},
-		{Name: "senderNotificationPermissionNoMatch", Cond: Condition{Kind: SenderNotificationPermissionCondition, Key: "powerlevel"}, EventJSON: `{"sender":"@nobody:example.com"}`, WantMatch: false, WantErr: false},
+		{Name: "senderNotificationPermissionNoMatch", Cond: Condition{Kind: SenderNotificationPermissionCondition, Key: "powerlevel"}, EventJSON: `{"room_id":"!room:example.com","sender":"@nobody:example.com"}`, WantMatch: false, WantErr: false},
 	}
 	for _, tst := range tsts {
 		t.Run(tst.Name, func(t *testing.T) {
@@ -170,15 +169,15 @@ func TestPatternMatches(t *testing.T) {
 		EventJSON string
 		Want      bool
 	}{
-		{"empty", "", "", `{}`, false},
+		{"empty", "", "", `{"room_id":"!room:a"}`, false},
 
-		{"patternEmpty", "content", "", `{"content":{}}`, false},
+		{"patternEmpty", "content", "", `{"room_id":"!room:a","content":{}}`, false},
 
-		{"literal", "content.creator", "acreator", `{"content":{"creator":"acreator"}}`, true},
+		{"literal", "content.creator", "acreator", `{"room_id":"!room:a","content":{"creator":"acreator"}}`, true},
-		{"substring", "content.creator", "reat", `{"content":{"creator":"acreator"}}`, true},
+		{"substring", "content.creator", "reat", `{"room_id":"!room:a","content":{"creator":"acreator"}}`, true},
-		{"singlePattern", "content.creator", "acr?ator", `{"content":{"creator":"acreator"}}`, true},
+		{"singlePattern", "content.creator", "acr?ator", `{"room_id":"!room:a","content":{"creator":"acreator"}}`, true},
-		{"multiPattern", "content.creator", "a*ea*r", `{"content":{"creator":"acreator"}}`, true},
+		{"multiPattern", "content.creator", "a*ea*r", `{"room_id":"!room:a","content":{"creator":"acreator"}}`, true},
-		{"patternNoSubstring", "content.creator", "r*t", `{"content":{"creator":"acreator"}}`, false},
+		{"patternNoSubstring", "content.creator", "r*t", `{"room_id":"!room:a","content":{"creator":"acreator"}}`, false},
 	}
 	for _, tst := range tsts {
 		t.Run(tst.Name, func(t *testing.T) {

internal/transactionrequest.go

@@ -161,7 +161,7 @@ func (t *TxnReq) ProcessTransaction(ctx context.Context) (*fclient.RespSend, *ut
 		if event.Type() == spec.MRoomCreate && event.StateKeyEquals("") {
 			continue
 		}
-		if api.IsServerBannedFromRoom(ctx, t.rsAPI, event.RoomID(), t.Origin) {
+		if api.IsServerBannedFromRoom(ctx, t.rsAPI, event.RoomID().String(), t.Origin) {
 			results[event.EventID()] = fclient.PDUResult{
 				Error: "Forbidden by server ACLs",
 			}

internal/version.go

@@ -18,7 +18,7 @@ var build string
 const (
 	VersionMajor = 0
 	VersionMinor = 13
-	VersionPatch = 2
+	VersionPatch = 3
 	VersionTag   = "" // example: "rc1"
 
 	gitRevLen = 7 // 7 matches the displayed characters on github.com

roomserver/acls/acls.go

@@ -119,7 +119,7 @@ func (s *ServerACLs) OnServerACLUpdate(state gomatrixserverlib.PDU) {
 	}).Debugf("Updating server ACLs for %q", state.RoomID())
 	s.aclsMutex.Lock()
 	defer s.aclsMutex.Unlock()
-	s.acls[state.RoomID()] = acls
+	s.acls[state.RoomID().String()] = acls
 }
 
 func (s *ServerACLs) IsServerBannedFromRoom(serverName spec.ServerName, roomID string) bool {

roomserver/api/wrapper.go

@@ -75,7 +75,7 @@ func SendEventWithState(
 	}
 
 	logrus.WithContext(ctx).WithFields(logrus.Fields{
-		"room_id":   event.RoomID(),
+		"room_id":   event.RoomID().String(),
 		"event_id":  event.EventID(),
 		"outliers":  len(ires),
 		"state_ids": len(stateEventIDs),

roomserver/auth/auth.go

@@ -85,11 +85,7 @@ func IsAnyUserOnServerWithMembership(ctx context.Context, querier api.QuerySende
 			continue
 		}
 
-		validRoomID, err := spec.NewRoomID(ev.RoomID())
+		userID, err := querier.QueryUserIDForSender(ctx, ev.RoomID(), spec.SenderID(*stateKey))
-		if err != nil {
-			continue
-		}
-		userID, err := querier.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*stateKey))
 		if err != nil {
 			continue
 		}

roomserver/internal/alias.go

@@ -189,7 +189,7 @@ func (r *RoomserverInternalAPI) RemoveRoomAlias(ctx context.Context, senderID sp
 
 			proto := &gomatrixserverlib.ProtoEvent{
 				SenderID: string(canonicalSenderID),
-				RoomID:   ev.RoomID(),
+				RoomID:   ev.RoomID().String(),
 				Type:     ev.Type(),
 				StateKey: ev.StateKey(),
 				Content:  res,

roomserver/internal/api.go

@@ -239,7 +239,7 @@ func (r *RoomserverInternalAPI) HandleInvite(
 	if err != nil {
 		return err
 	}
-	return r.OutputProducer.ProduceRoomEvents(inviteEvent.RoomID(), outputEvents)
+	return r.OutputProducer.ProduceRoomEvents(inviteEvent.RoomID().String(), outputEvents)
 }
 
 func (r *RoomserverInternalAPI) PerformCreateRoom(

roomserver/internal/helpers/auth.go

@@ -218,9 +218,9 @@ func loadAuthEvents(
 	roomID := ""
 	for _, ev := range result.events {
 		if roomID == "" {
-			roomID = ev.RoomID()
+			roomID = ev.RoomID().String()
 		}
-		if ev.RoomID() != roomID {
+		if ev.RoomID().String() != roomID {
 			result.valid = false
 			break
 		}

roomserver/internal/helpers/helpers.go

@@ -54,7 +54,7 @@ func UpdateToInviteMembership(
 			Type: api.OutputTypeRetireInviteEvent,
 			RetireInviteEvent: &api.OutputRetireInviteEvent{
 				EventID:          eventID,
-				RoomID:           add.RoomID(),
+				RoomID:           add.RoomID().String(),
 				Membership:       spec.Join,
 				RetiredByEventID: add.EventID(),
 				TargetSenderID:   spec.SenderID(*add.StateKey()),
@@ -396,7 +396,7 @@ BFSLoop:
 			// It's nasty that we have to extract the room ID from an event, but many federation requests
 			// only talk in event IDs, no room IDs at all (!!!)
 			ev := events[0]
-			isServerInRoom, err = IsServerCurrentlyInRoom(ctx, db, querier, serverName, ev.RoomID())
+			isServerInRoom, err = IsServerCurrentlyInRoom(ctx, db, querier, serverName, ev.RoomID().String())
 			if err != nil {
 				util.GetLogger(ctx).WithError(err).Error("Failed to check if server is currently in room, assuming not.")
 			}
@@ -419,7 +419,7 @@ BFSLoop:
 				// hasn't been seen before.
 				if !visited[pre] {
 					visited[pre] = true
-					allowed, err = CheckServerAllowedToSeeEvent(ctx, db, info, ev.RoomID(), pre, serverName, isServerInRoom, querier)
+					allowed, err = CheckServerAllowedToSeeEvent(ctx, db, info, ev.RoomID().String(), pre, serverName, isServerInRoom, querier)
 					if err != nil {
 						util.GetLogger(ctx).WithField("server", serverName).WithField("event_id", pre).WithError(err).Error(
 							"Error checking if allowed to see event",

roomserver/internal/input/input.go

@@ -358,7 +358,7 @@ func (r *Inputer) queueInputRoomEvents(
 	// For each event, marshal the input room event and then
 	// send it into the input queue.
 	for _, e := range request.InputRoomEvents {
-		roomID := e.Event.RoomID()
+		roomID := e.Event.RoomID().String()
 		subj := r.Cfg.Matrix.JetStream.Prefixed(jetstream.InputRoomEventSubj(roomID))
 		msg := &nats.Msg{
 			Subject: subj,

roomserver/internal/input/input_events.go

@@ -87,7 +87,7 @@ func (r *Inputer) processRoomEvent(
 	}
 
 	trace, ctx := internal.StartRegion(ctx, "processRoomEvent")
-	trace.SetTag("room_id", input.Event.RoomID())
+	trace.SetTag("room_id", input.Event.RoomID().String())
 	trace.SetTag("event_id", input.Event.EventID())
 	defer trace.EndRegion()
 
@@ -96,7 +96,7 @@ func (r *Inputer) processRoomEvent(
 	defer func() {
 		timetaken := time.Since(started)
 		processRoomEventDuration.With(prometheus.Labels{
-			"room_id": input.Event.RoomID(),
+			"room_id": input.Event.RoomID().String(),
 		}).Observe(float64(timetaken.Milliseconds()))
 	}()
 
@@ -105,7 +105,7 @@ func (r *Inputer) processRoomEvent(
 	event := headered.PDU
 	logger := util.GetLogger(ctx).WithFields(logrus.Fields{
 		"event_id": event.EventID(),
-		"room_id":  event.RoomID(),
+		"room_id":  event.RoomID().String(),
 		"kind":     input.Kind,
 		"origin":   input.Origin,
 		"type":     event.Type(),
@@ -120,19 +120,15 @@ func (r *Inputer) processRoomEvent(
 	// Don't waste time processing the event if the room doesn't exist.
 	// A room entry locally will only be created in response to a create
 	// event.
-	roomInfo, rerr := r.DB.RoomInfo(ctx, event.RoomID())
+	roomInfo, rerr := r.DB.RoomInfo(ctx, event.RoomID().String())
 	if rerr != nil {
 		return fmt.Errorf("r.DB.RoomInfo: %w", rerr)
 	}
 	isCreateEvent := event.Type() == spec.MRoomCreate && event.StateKeyEquals("")
 	if roomInfo == nil && !isCreateEvent {
-		return fmt.Errorf("room %s does not exist for event %s", event.RoomID(), event.EventID())
+		return fmt.Errorf("room %s does not exist for event %s", event.RoomID().String(), event.EventID())
 	}
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	sender, err := r.Queryer.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID())
-	if err != nil {
-		return err
-	}
-	sender, err := r.Queryer.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
 	if err != nil {
 		return fmt.Errorf("failed getting userID for sender %q. %w", event.SenderID(), err)
 	}
@@ -179,7 +175,7 @@ func (r *Inputer) processRoomEvent(
 	// If we have missing events (auth or prev), we build a list of servers to ask
 	if missingAuth || missingPrev {
 		serverReq := &fedapi.QueryJoinedHostServerNamesInRoomRequest{
-			RoomID:             event.RoomID(),
+			RoomID:             event.RoomID().String(),
 			ExcludeSelf:        true,
 			ExcludeBlacklisted: true,
 		}
@@ -395,12 +391,12 @@ func (r *Inputer) processRoomEvent(
 
 	// Request the room info again — it's possible that the room has been
 	// created by now if it didn't exist already.
-	roomInfo, err = r.DB.RoomInfo(ctx, event.RoomID())
+	roomInfo, err = r.DB.RoomInfo(ctx, event.RoomID().String())
 	if err != nil {
 		return fmt.Errorf("updater.RoomInfo: %w", err)
 	}
 	if roomInfo == nil {
-		return fmt.Errorf("updater.RoomInfo missing for room %s", event.RoomID())
+		return fmt.Errorf("updater.RoomInfo missing for room %s", event.RoomID().String())
 	}
 
 	if input.HasState || (!missingPrev && stateAtEvent.BeforeStateSnapshotNID == 0) {
@@ -459,7 +455,7 @@ func (r *Inputer) processRoomEvent(
 			if userErr != nil {
 				return userErr
 			}
-			err = r.RSAPI.StoreUserRoomPublicKey(ctx, mapping.MXIDMapping.UserRoomKey, *storeUserID, *validRoomID)
+			err = r.RSAPI.StoreUserRoomPublicKey(ctx, mapping.MXIDMapping.UserRoomKey, *storeUserID, event.RoomID())
 			if err != nil {
 				return fmt.Errorf("failed storing user room public key: %w", err)
 			}
@@ -481,7 +477,7 @@ func (r *Inputer) processRoomEvent(
 			return fmt.Errorf("r.updateLatestEvents: %w", err)
 		}
 	case api.KindOld:
-		err = r.OutputProducer.ProduceRoomEvents(event.RoomID(), []api.OutputEvent{
+		err = r.OutputProducer.ProduceRoomEvents(event.RoomID().String(), []api.OutputEvent{
 			{
 				Type: api.OutputTypeOldRoomEvent,
 				OldRoomEvent: &api.OutputOldRoomEvent{
@@ -507,7 +503,7 @@ func (r *Inputer) processRoomEvent(
 	// so notify downstream components to redact this event - they should have it if they've
 	// been tracking our output log.
 	if redactedEventID != "" {
-		err = r.OutputProducer.ProduceRoomEvents(event.RoomID(), []api.OutputEvent{
+		err = r.OutputProducer.ProduceRoomEvents(event.RoomID().String(), []api.OutputEvent{
 			{
 				Type: api.OutputTypeRedactedEvent,
 				RedactedEvent: &api.OutputRedactedEvent{
@@ -536,7 +532,7 @@ func (r *Inputer) processRoomEvent(
 
 // handleRemoteRoomUpgrade updates published rooms and room aliases
 func (r *Inputer) handleRemoteRoomUpgrade(ctx context.Context, event gomatrixserverlib.PDU) error {
-	oldRoomID := event.RoomID()
+	oldRoomID := event.RoomID().String()
 	newRoomID := gjson.GetBytes(event.Content(), "replacement_room").Str
 	return r.DB.UpgradeRoom(ctx, oldRoomID, newRoomID, string(event.SenderID()))
 }
@@ -596,7 +592,7 @@ func (r *Inputer) processStateBefore(
 			StateKey:  "",
 		})
 		stateBeforeReq := &api.QueryStateAfterEventsRequest{
-			RoomID:       event.RoomID(),
+			RoomID:       event.RoomID().String(),
 			PrevEventIDs: event.PrevEventIDs(),
 			StateToFetch: tuplesNeeded,
 		}
@@ -606,7 +602,7 @@ func (r *Inputer) processStateBefore(
 		}
 		switch {
 		case !stateBeforeRes.RoomExists:
-			rejectionErr = fmt.Errorf("room %q does not exist", event.RoomID())
+			rejectionErr = fmt.Errorf("room %q does not exist", event.RoomID().String())
 			return
 		case !stateBeforeRes.PrevEventsExist:
 			rejectionErr = fmt.Errorf("prev events of %q are not known", event.EventID())
@@ -707,7 +703,7 @@ func (r *Inputer) fetchAuthEvents(
 		// Request the entire auth chain for the event in question. This should
 		// contain all of the auth events — including ones that we already know —
 		// so we'll need to filter through those in the next section.
-		res, err = r.FSAPI.GetEventAuth(ctx, virtualHost, serverName, event.Version(), event.RoomID(), event.EventID())
+		res, err = r.FSAPI.GetEventAuth(ctx, virtualHost, serverName, event.Version(), event.RoomID().String(), event.EventID())
 		if err != nil {
 			logger.WithError(err).Warnf("Failed to get event auth from federation for %q: %s", event.EventID(), err)
 			continue
@@ -866,25 +862,20 @@ func (r *Inputer) kickGuests(ctx context.Context, event gomatrixserverlib.PDU, r
 
 	inputEvents := make([]api.InputRoomEvent, 0, len(memberEvents))
 	latestReq := &api.QueryLatestEventsAndStateRequest{
-		RoomID: event.RoomID(),
+		RoomID: event.RoomID().String(),
 	}
 	latestRes := &api.QueryLatestEventsAndStateResponse{}
 	if err = r.Queryer.QueryLatestEventsAndState(ctx, latestReq, latestRes); err != nil {
 		return err
 	}
 
-	validRoomID, err := spec.NewRoomID(event.RoomID())
-	if err != nil {
-		return err
-	}
-
 	prevEvents := latestRes.LatestEvents
 	for _, memberEvent := range memberEvents {
 		if memberEvent.StateKey() == nil {
 			continue
 		}
 
-		memberUserID, err := r.Queryer.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*memberEvent.StateKey()))
+		memberUserID, err := r.Queryer.QueryUserIDForSender(ctx, event.RoomID(), spec.SenderID(*memberEvent.StateKey()))
 		if err != nil {
 			continue
 		}
@@ -912,7 +903,7 @@ func (r *Inputer) kickGuests(ctx context.Context, event gomatrixserverlib.PDU, r
 
 		stateKey := *memberEvent.StateKey()
 		fledglingEvent := &gomatrixserverlib.ProtoEvent{
-			RoomID:     event.RoomID(),
+			RoomID:     event.RoomID().String(),
 			Type:       spec.MRoomMember,
 			StateKey:   &stateKey,
 			SenderID:   stateKey,
@@ -928,12 +919,7 @@ func (r *Inputer) kickGuests(ctx context.Context, event gomatrixserverlib.PDU, r
 			return err
 		}
 
-		validRoomID, err := spec.NewRoomID(event.RoomID())
+		signingIdentity, err := r.SigningIdentity(ctx, event.RoomID(), *memberUserID)
-		if err != nil {
-			return err
-		}
-
-		signingIdentity, err := r.SigningIdentity(ctx, *validRoomID, *memberUserID)
 		if err != nil {
 			return err
 		}

roomserver/internal/input/input_latest_events.go

@@ -197,7 +197,7 @@ func (u *latestEventsUpdater) doUpdateLatestEvents() error {
 	// send the event asynchronously but we would need to ensure that 1) the events are written to the log in
 	// the correct order, 2) that pending writes are resent across restarts. In order to avoid writing all the
 	// necessary bookkeeping we'll keep the event sending synchronous for now.
-	if err = u.api.OutputProducer.ProduceRoomEvents(u.event.RoomID(), updates); err != nil {
+	if err = u.api.OutputProducer.ProduceRoomEvents(u.event.RoomID().String(), updates); err != nil {
 		return fmt.Errorf("u.api.WriteOutputEvents: %w", err)
 	}
 
@@ -290,7 +290,7 @@ func (u *latestEventsUpdater) latestState() error {
 	if removed := len(u.removed) - len(u.added); !u.rewritesState && removed > 0 {
 		logrus.WithFields(logrus.Fields{
 			"event_id":      u.event.EventID(),
-			"room_id":       u.event.RoomID(),
+			"room_id":       u.event.RoomID().String(),
 			"old_state_nid": u.oldStateNID,
 			"new_state_nid": u.newStateNID,
 			"old_latest":    u.oldLatest.EventIDs(),

roomserver/internal/input/input_membership.go

@@ -139,11 +139,7 @@ func (r *Inputer) updateMembership(
 func (r *Inputer) isLocalTarget(ctx context.Context, event *types.Event) bool {
 	isTargetLocalUser := false
 	if statekey := event.StateKey(); statekey != nil {
-		validRoomID, err := spec.NewRoomID(event.RoomID())
+		userID, err := r.Queryer.QueryUserIDForSender(ctx, event.RoomID(), spec.SenderID(*statekey))
-		if err != nil {
-			return isTargetLocalUser
-		}
-		userID, err := r.Queryer.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*statekey))
 		if err != nil || userID == nil {
 			return isTargetLocalUser
 		}
@@ -168,7 +164,7 @@ func updateToJoinMembership(
 			Type: api.OutputTypeRetireInviteEvent,
 			RetireInviteEvent: &api.OutputRetireInviteEvent{
 				EventID:          eventID,
-				RoomID:           add.RoomID(),
+				RoomID:           add.RoomID().String(),
 				Membership:       spec.Join,
 				RetiredByEventID: add.EventID(),
 				TargetSenderID:   spec.SenderID(*add.StateKey()),
@@ -195,7 +191,7 @@ func updateToLeaveMembership(
 			Type: api.OutputTypeRetireInviteEvent,
 			RetireInviteEvent: &api.OutputRetireInviteEvent{
 				EventID:          eventID,
-				RoomID:           add.RoomID(),
+				RoomID:           add.RoomID().String(),
 				Membership:       newMembership,
 				RetiredByEventID: add.EventID(),
 				TargetSenderID:   spec.SenderID(*add.StateKey()),

roomserver/internal/input/input_missing.go

@@ -84,7 +84,7 @@ func (t *missingStateReq) processEventWithMissingState(
 	// need to fallback to /state.
 	t.log = util.GetLogger(ctx).WithFields(map[string]interface{}{
 		"txn_event":       e.EventID(),
-		"room_id":         e.RoomID(),
+		"room_id":         e.RoomID().String(),
 		"txn_prev_events": e.PrevEventIDs(),
 	})
 
@@ -264,7 +264,7 @@ func (t *missingStateReq) lookupResolvedStateBeforeEvent(ctx context.Context, e
 		// Look up what the state is after the backward extremity. This will either
 		// come from the roomserver, if we know all the required events, or it will
 		// come from a remote server via /state_ids if not.
-		prevState, trustworthy, err := t.lookupStateAfterEvent(ctx, roomVersion, e.RoomID(), prevEventID)
+		prevState, trustworthy, err := t.lookupStateAfterEvent(ctx, roomVersion, e.RoomID().String(), prevEventID)
 		switch err2 := err.(type) {
 		case gomatrixserverlib.EventValidationError:
 			if !err2.Persistable {
@@ -316,9 +316,9 @@ func (t *missingStateReq) lookupResolvedStateBeforeEvent(ctx context.Context, e
 		}
 		// There's more than one previous state - run them all through state res
 		var err error
-		t.roomsMu.Lock(e.RoomID())
+		t.roomsMu.Lock(e.RoomID().String())
 		resolvedState, err = t.resolveStatesAndCheck(ctx, roomVersion, respStates, e)
-		t.roomsMu.Unlock(e.RoomID())
+		t.roomsMu.Unlock(e.RoomID().String())
 		switch err2 := err.(type) {
 		case gomatrixserverlib.EventValidationError:
 			if !err2.Persistable {
@@ -510,7 +510,7 @@ retryAllowedState:
 	}); err != nil {
 		switch missing := err.(type) {
 		case gomatrixserverlib.MissingAuthEventError:
-			h, err2 := t.lookupEvent(ctx, roomVersion, backwardsExtremity.RoomID(), missing.AuthEventID, true)
+			h, err2 := t.lookupEvent(ctx, roomVersion, backwardsExtremity.RoomID().String(), missing.AuthEventID, true)
 			switch e := err2.(type) {
 			case gomatrixserverlib.EventValidationError:
 				if !e.Persistable {
@@ -546,7 +546,7 @@ func (t *missingStateReq) getMissingEvents(ctx context.Context, e gomatrixserver
 	trace, ctx := internal.StartRegion(ctx, "getMissingEvents")
 	defer trace.EndRegion()
 
-	logger := t.log.WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
+	logger := t.log.WithField("event_id", e.EventID()).WithField("room_id", e.RoomID().String())
 	latest, _, _, err := t.db.LatestEventIDs(ctx, t.roomInfo.RoomNID)
 	if err != nil {
 		return nil, false, false, fmt.Errorf("t.DB.LatestEventIDs: %w", err)
@@ -560,7 +560,7 @@ func (t *missingStateReq) getMissingEvents(ctx context.Context, e gomatrixserver
 	var missingResp *fclient.RespMissingEvents
 	for _, server := range t.servers {
 		var m fclient.RespMissingEvents
-		if m, err = t.federation.LookupMissingEvents(ctx, t.virtualHost, server, e.RoomID(), fclient.MissingEvents{
+		if m, err = t.federation.LookupMissingEvents(ctx, t.virtualHost, server, e.RoomID().String(), fclient.MissingEvents{
 			Limit: 20,
 			// The latest event IDs that the sender already has. These are skipped when retrieving the previous events of latest_events.
 			EarliestEvents: latestEvents,

roomserver/internal/perform/perform_backfill.go

@@ -301,7 +301,7 @@ func (b *backfillRequester) StateIDsBeforeEvent(ctx context.Context, targetEvent
 		return ids, nil
 	}
 	if len(targetEvent.PrevEventIDs()) == 0 && targetEvent.Type() == "m.room.create" && targetEvent.StateKeyEquals("") {
-		util.GetLogger(ctx).WithField("room_id", targetEvent.RoomID()).Info("Backfilled to the beginning of the room")
+		util.GetLogger(ctx).WithField("room_id", targetEvent.RoomID().String()).Info("Backfilled to the beginning of the room")
 		b.eventIDToBeforeStateIDs[targetEvent.EventID()] = []string{}
 		return nil, nil
 	}
@@ -494,11 +494,7 @@ FindSuccessor:
 	// Store the server names in a temporary map to avoid duplicates.
 	serverSet := make(map[spec.ServerName]bool)
 	for _, event := range memberEvents {
-		validRoomID, err := spec.NewRoomID(event.RoomID())
+		if sender, err := b.querier.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID()); err == nil {
-		if err != nil {
-			continue
-		}
-		if sender, err := b.querier.QueryUserIDForSender(ctx, *validRoomID, event.SenderID()); err == nil {
 			serverSet[sender.Domain()] = true
 		}
 	}

roomserver/internal/perform/perform_create_room.go

@@ -90,7 +90,16 @@ func (c *Creator) PerformCreateRoom(ctx context.Context, userID spec.UserID, roo
 	} else {
 		senderID = spec.SenderID(userID.String())
 	}
+
+	// TODO: Maybe, at some point, GMSL should return the events to create, so we can define the version
+	// entirely there.
+	switch createRequest.RoomVersion {
+	case gomatrixserverlib.RoomVersionV11:
+		// RoomVersionV11 removed the creator field from the create content: https://github.com/matrix-org/matrix-spec-proposals/pull/2175
+	default:
 		createContent["creator"] = senderID
+	}
+
 	createContent["room_version"] = createRequest.RoomVersion
 	powerLevelContent := eventutil.InitialPowerLevelsContent(string(senderID))
 	joinRuleContent := gomatrixserverlib.JoinRuleContent{

roomserver/internal/perform/perform_invite.go

@@ -100,16 +100,12 @@ func (r *Inviter) ProcessInviteMembership(
 	var outputUpdates []api.OutputEvent
 	var updater *shared.MembershipUpdater
 
-	validRoomID, err := spec.NewRoomID(inviteEvent.RoomID())
+	userID, err := r.RSAPI.QueryUserIDForSender(ctx, inviteEvent.RoomID(), spec.SenderID(*inviteEvent.StateKey()))
-	if err != nil {
-		return nil, err
-	}
-	userID, err := r.RSAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*inviteEvent.StateKey()))
 	if err != nil {
 		return nil, api.ErrInvalidID{Err: fmt.Errorf("the user ID %s is invalid", *inviteEvent.StateKey())}
 	}
 	isTargetLocal := r.Cfg.Matrix.IsLocalServerName(userID.Domain())
-	if updater, err = r.DB.MembershipUpdater(ctx, inviteEvent.RoomID(), *inviteEvent.StateKey(), isTargetLocal, inviteEvent.Version()); err != nil {
+	if updater, err = r.DB.MembershipUpdater(ctx, inviteEvent.RoomID().String(), *inviteEvent.StateKey(), isTargetLocal, inviteEvent.Version()); err != nil {
 		return nil, fmt.Errorf("r.DB.MembershipUpdater: %w", err)
 	}
 	outputUpdates, err = helpers.UpdateToInviteMembership(updater, &types.Event{

roomserver/internal/perform/perform_leave.go

@@ -93,11 +93,21 @@ func (r *Leaver) performLeaveRoomByID(
 	isInvitePending, senderUser, eventID, _, err := helpers.IsInvitePending(ctx, r.DB, req.RoomID, *leaver)
 	if err == nil && isInvitePending {
 		sender, serr := r.RSAPI.QueryUserIDForSender(ctx, *roomID, senderUser)
-		if serr != nil || sender == nil {
+		if serr != nil {
-			return nil, fmt.Errorf("sender %q has no matching userID", senderUser)
+			return nil, fmt.Errorf("failed looking up userID for sender %q: %w", senderUser, serr)
 		}
-		if !r.Cfg.Matrix.IsLocalServerName(sender.Domain()) {
+
-			return r.performFederatedRejectInvite(ctx, req, res, *sender, eventID, *leaver)
+		var domain spec.ServerName
+		if sender == nil {
+			// TODO: Currently a federated invite has no way of knowing the mxid_mapping of the inviter.
+			// Should we add the inviter's m.room.member event (with mxid_mapping) to invite_room_state to allow
+			// the invited user to leave via the inviter's server?
+			domain = roomID.Domain()
+		} else {
+			domain = sender.Domain()
+		}
+		if !r.Cfg.Matrix.IsLocalServerName(domain) {
+			return r.performFederatedRejectInvite(ctx, req, res, domain, eventID, *leaver)
 		}
 		// check that this is not a "server notice room"
 		accData := &userapi.QueryAccountDataResponse{}
@@ -219,14 +229,14 @@ func (r *Leaver) performFederatedRejectInvite(
 	ctx context.Context,
 	req *api.PerformLeaveRequest,
 	res *api.PerformLeaveResponse, // nolint:unparam
-	inviteSender spec.UserID, eventID string,
+	inviteDomain spec.ServerName, eventID string,
 	leaver spec.SenderID,
 ) ([]api.OutputEvent, error) {
 	// Ask the federation sender to perform a federated leave for us.
 	leaveReq := fsAPI.PerformLeaveRequest{
 		RoomID:      req.RoomID,
 		UserID:      req.Leaver.String(),
-		ServerNames: []spec.ServerName{inviteSender.Domain()},
+		ServerNames: []spec.ServerName{inviteDomain},
 	}
 	leaveRes := fsAPI.PerformLeaveResponse{}
 	if err := r.FSAPI.PerformLeave(ctx, &leaveReq, &leaveRes); err != nil {

roomserver/internal/perform/perform_upgrade.go

@@ -368,7 +368,16 @@ func (r *Upgrader) generateInitialEvents(ctx context.Context, oldRoom *api.Query
 	// in the create event (such as for the room types MSC).
 	newCreateContent := map[string]interface{}{}
 	_ = json.Unmarshal(oldCreateEvent.Content(), &newCreateContent)
-	newCreateContent["creator"] = string(senderID)
+
+	switch newVersion {
+	case gomatrixserverlib.RoomVersionV11:
+		// RoomVersionV11 removed the creator field from the create content: https://github.com/matrix-org/matrix-spec-proposals/pull/2175
+		// So if we are upgrading from pre v11, we need to remove the field.
+		delete(newCreateContent, "creator")
+	default:
+		newCreateContent["creator"] = senderID
+	}
+
 	newCreateContent["room_version"] = newVersion
 	newCreateContent["predecessor"] = gomatrixserverlib.PreviousRoom{
 		EventID: tombstoneEvent.EventID(),

roomserver/internal/query/query_room_hierarchy.go

@@ -513,14 +513,14 @@ func restrictedJoinRuleAllowedRooms(ctx context.Context, joinRuleEv *types.Heade
 	}
 	var jrContent gomatrixserverlib.JoinRuleContent
 	if err := json.Unmarshal(joinRuleEv.Content(), &jrContent); err != nil {
-		util.GetLogger(ctx).Warnf("failed to check join_rule on room %s: %s", joinRuleEv.RoomID(), err)
+		util.GetLogger(ctx).Warnf("failed to check join_rule on room %s: %s", joinRuleEv.RoomID().String(), err)
 		return nil
 	}
 	for _, allow := range jrContent.Allow {
 		if allow.Type == spec.MRoomMembership {
 			allowedRoomID, err := spec.NewRoomID(allow.RoomID)
 			if err != nil {
-				util.GetLogger(ctx).Warnf("invalid room ID '%s' found in join_rule on room %s: %s", allow.RoomID, joinRuleEv.RoomID(), err)
+				util.GetLogger(ctx).Warnf("invalid room ID '%s' found in join_rule on room %s: %s", allow.RoomID, joinRuleEv.RoomID().String(), err)
 			} else {
 				allows = append(allows, *allowedRoomID)
 			}

roomserver/internal/query/query_test.go

@@ -49,6 +49,7 @@ func (db *getEventDB) addFakeEvent(eventID string, authIDs []string) error {
 	}
 	builder := map[string]interface{}{
 		"event_id":    eventID,
+		"room_id":     "!room:a",
 		"auth_events": authEvents,
 	}
 

roomserver/storage/shared/storage.go

@@ -696,8 +696,8 @@ func (d *Database) GetOrCreateRoomInfo(ctx context.Context, event gomatrixserver
 		return nil, fmt.Errorf("extractRoomVersionFromCreateEvent: %w", err)
 	}
 
-	roomNID, nidOK := d.Cache.GetRoomServerRoomNID(event.RoomID())
+	roomNID, nidOK := d.Cache.GetRoomServerRoomNID(event.RoomID().String())
-	cachedRoomVersion, versionOK := d.Cache.GetRoomVersion(event.RoomID())
+	cachedRoomVersion, versionOK := d.Cache.GetRoomVersion(event.RoomID().String())
 	// if we found both, the roomNID and version in our cache, no need to query the database
 	if nidOK && versionOK {
 		return &types.RoomInfo{
@@ -707,14 +707,14 @@ func (d *Database) GetOrCreateRoomInfo(ctx context.Context, event gomatrixserver
 	}
 
 	err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
-		roomNID, err = d.assignRoomNID(ctx, txn, event.RoomID(), roomVersion)
+		roomNID, err = d.assignRoomNID(ctx, txn, event.RoomID().String(), roomVersion)
 		if err != nil {
 			return err
 		}
 		return nil
 	})
 	if roomVersion != "" {
-		d.Cache.StoreRoomVersion(event.RoomID(), roomVersion)
+		d.Cache.StoreRoomVersion(event.RoomID().String(), roomVersion)
 	}
 	return &types.RoomInfo{
 		RoomVersion: roomVersion,
@@ -1026,24 +1026,19 @@ func (d *EventDatabase) MaybeRedactEvent(
 		case validated || redactedEvent == nil || redactionEvent == nil:
 			// we've seen this redaction before or there is nothing to redact
 			return nil
-		case redactedEvent.RoomID() != redactionEvent.RoomID():
+		case redactedEvent.RoomID().String() != redactionEvent.RoomID().String():
 			// redactions across rooms aren't allowed
 			ignoreRedaction = true
 			return nil
 		}
 
-		var validRoomID *spec.RoomID
-		validRoomID, err = spec.NewRoomID(redactedEvent.RoomID())
-		if err != nil {
-			return err
-		}
 		sender1Domain := ""
-		sender1, err1 := querier.QueryUserIDForSender(ctx, *validRoomID, redactedEvent.SenderID())
+		sender1, err1 := querier.QueryUserIDForSender(ctx, redactedEvent.RoomID(), redactedEvent.SenderID())
 		if err1 == nil {
 			sender1Domain = string(sender1.Domain())
 		}
 		sender2Domain := ""
-		sender2, err2 := querier.QueryUserIDForSender(ctx, *validRoomID, redactionEvent.SenderID())
+		sender2, err2 := querier.QueryUserIDForSender(ctx, redactedEvent.RoomID(), redactionEvent.SenderID())
 		if err2 == nil {
 			sender2Domain = string(sender2.Domain())
 		}
@@ -1522,7 +1517,7 @@ func (d *Database) GetBulkStateContent(ctx context.Context, roomIDs []string, tu
 		}
 		result[i] = tables.StrippedEvent{
 			EventType:    ev.Type(),
-			RoomID:       ev.RoomID(),
+			RoomID:       ev.RoomID().String(),
 			StateKey:     *ev.StateKey(),
 			ContentValue: tables.ExtractContentValue(&types.HeaderedEvent{PDU: ev}),
 		}

setup/mscs/msc2836/msc2836.go

@@ -271,7 +271,7 @@ func (rc *reqCtx) process() (*MSC2836EventRelationshipsResponse, *util.JSONRespo
 		event = rc.fetchUnknownEvent(rc.req.EventID, rc.req.RoomID)
 	}
 	if rc.req.RoomID == "" && event != nil {
-		rc.req.RoomID = event.RoomID()
+		rc.req.RoomID = event.RoomID().String()
 	}
 	if event == nil || !rc.authorisedToSeeEvent(event) {
 		return nil, &util.JSONResponse{
@@ -526,7 +526,7 @@ func (rc *reqCtx) authorisedToSeeEvent(event *types.HeaderedEvent) bool {
 		// make sure the server is in this room
 		var res fs.QueryJoinedHostServerNamesInRoomResponse
 		err := rc.fsAPI.QueryJoinedHostServerNamesInRoom(rc.ctx, &fs.QueryJoinedHostServerNamesInRoomRequest{
-			RoomID: event.RoomID(),
+			RoomID: event.RoomID().String(),
 		}, &res)
 		if err != nil {
 			util.GetLogger(rc.ctx).WithError(err).Error("authorisedToSeeEvent: failed to QueryJoinedHostServerNamesInRoom")
@@ -545,7 +545,7 @@ func (rc *reqCtx) authorisedToSeeEvent(event *types.HeaderedEvent) bool {
 	// TODO: This does not honour m.room.create content
 	var queryMembershipRes roomserver.QueryMembershipForUserResponse
 	err := rc.rsAPI.QueryMembershipForUser(rc.ctx, &roomserver.QueryMembershipForUserRequest{
-		RoomID: event.RoomID(),
+		RoomID: event.RoomID().String(),
 		UserID: rc.userID,
 	}, &queryMembershipRes)
 	if err != nil {
@@ -612,7 +612,7 @@ func (rc *reqCtx) lookForEvent(eventID string) *types.HeaderedEvent {
 			// inject all the events into the roomserver then return the event in question
 			rc.injectResponseToRoomserver(queryRes)
 			for _, ev := range queryRes.ParsedEvents {
-				if ev.EventID() == eventID && rc.req.RoomID == ev.RoomID() {
+				if ev.EventID() == eventID && rc.req.RoomID == ev.RoomID().String() {
 					return &types.HeaderedEvent{PDU: ev}
 				}
 			}
@@ -629,7 +629,7 @@ func (rc *reqCtx) lookForEvent(eventID string) *types.HeaderedEvent {
 			}
 		}
 	}
-	if rc.req.RoomID == event.RoomID() {
+	if rc.req.RoomID == event.RoomID().String() {
 		return event
 	}
 	return nil

setup/mscs/msc2836/storage.go

@@ -239,7 +239,7 @@ func (p *DB) StoreRelation(ctx context.Context, ev *types.HeaderedEvent) error {
 			return err
 		}
 		util.GetLogger(ctx).Infof("StoreRelation child=%s parent=%s rel_type=%s", child, parent, relType)
-		_, err = txn.Stmt(p.insertNodeStmt).ExecContext(ctx, ev.EventID(), ev.OriginServerTS(), ev.RoomID(), count, base64.RawStdEncoding.EncodeToString(hash), 0)
+		_, err = txn.Stmt(p.insertNodeStmt).ExecContext(ctx, ev.EventID(), ev.OriginServerTS(), ev.RoomID().String(), count, base64.RawStdEncoding.EncodeToString(hash), 0)
 		return err
 	})
 }

syncapi/consumers/clientapi.go

@@ -113,7 +113,7 @@ func (s *OutputClientDataConsumer) Start() error {
 				id = streamPos
 				e := fulltext.IndexElement{
 					EventID:        ev.EventID(),
-					RoomID:         ev.RoomID(),
+					RoomID:         ev.RoomID().String(),
 					StreamPosition: streamPos,
 				}
 				e.SetContentType(ev.Type())

syncapi/consumers/roomserver.go

@@ -33,6 +33,7 @@ import (
 	"github.com/matrix-org/dendrite/syncapi/notifier"
 	"github.com/matrix-org/dendrite/syncapi/storage"
 	"github.com/matrix-org/dendrite/syncapi/streams"
+	"github.com/matrix-org/dendrite/syncapi/synctypes"
 	"github.com/matrix-org/dendrite/syncapi/types"
 	"github.com/matrix-org/gomatrixserverlib/spec"
 	"github.com/nats-io/nats.go"
@@ -165,9 +166,9 @@ func (s *OutputRoomEventConsumer) onRedactEvent(
 		return err
 	}
 
-	if err = s.db.RedactRelations(ctx, msg.RedactedBecause.RoomID(), msg.RedactedEventID); err != nil {
+	if err = s.db.RedactRelations(ctx, msg.RedactedBecause.RoomID().String(), msg.RedactedEventID); err != nil {
 		log.WithFields(log.Fields{
-			"room_id":           msg.RedactedBecause.RoomID(),
+			"room_id":           msg.RedactedBecause.RoomID().String(),
 			"event_id":          msg.RedactedBecause.EventID(),
 			"redacted_event_id": msg.RedactedEventID,
 		}).WithError(err).Warn("Failed to redact relations")
@@ -221,7 +222,7 @@ func (s *OutputRoomEventConsumer) onNewRoomEvent(
 	// Finally, work out if there are any more events missing.
 	if len(missingEventIDs) > 0 {
 		eventsReq := &api.QueryEventsByIDRequest{
-			RoomID:   ev.RoomID(),
+			RoomID:   ev.RoomID().String(),
 			EventIDs: missingEventIDs,
 		}
 		eventsRes := &api.QueryEventsByIDResponse{}
@@ -256,17 +257,12 @@ func (s *OutputRoomEventConsumer) onNewRoomEvent(
 	}
 
 	if msg.RewritesState {
-		if err = s.db.PurgeRoomState(ctx, ev.RoomID()); err != nil {
+		if err = s.db.PurgeRoomState(ctx, ev.RoomID().String()); err != nil {
 			return fmt.Errorf("s.db.PurgeRoom: %w", err)
 		}
 	}
 
-	validRoomID, err := spec.NewRoomID(ev.RoomID())
+	userID, err := s.rsAPI.QueryUserIDForSender(ctx, ev.RoomID(), ev.SenderID())
-	if err != nil {
-		return err
-	}
-
-	userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, ev.SenderID())
 	if err != nil {
 		return err
 	}
@@ -306,7 +302,7 @@ func (s *OutputRoomEventConsumer) onNewRoomEvent(
 	}
 
 	s.pduStream.Advance(pduPos)
-	s.notifier.OnNewEvent(ev, ev.RoomID(), nil, types.StreamingToken{PDUPosition: pduPos})
+	s.notifier.OnNewEvent(ev, ev.RoomID().String(), nil, types.StreamingToken{PDUPosition: pduPos})
 
 	return nil
 }
@@ -323,12 +319,7 @@ func (s *OutputRoomEventConsumer) onOldRoomEvent(
 	// old events in the sync API, this should at least prevent us
 	// from confusing clients into thinking they've joined/left rooms.
 
-	validRoomID, err := spec.NewRoomID(ev.RoomID())
+	userID, err := s.rsAPI.QueryUserIDForSender(ctx, ev.RoomID(), ev.SenderID())
-	if err != nil {
-		return err
-	}
-
-	userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, ev.SenderID())
 	if err != nil {
 		return err
 	}
@@ -354,7 +345,7 @@ func (s *OutputRoomEventConsumer) onOldRoomEvent(
 
 	if err = s.db.UpdateRelations(ctx, ev); err != nil {
 		log.WithFields(log.Fields{
-			"room_id":  ev.RoomID(),
+			"room_id":  ev.RoomID().String(),
 			"event_id": ev.EventID(),
 			"type":     ev.Type(),
 		}).WithError(err).Warn("Failed to update relations")
@@ -367,7 +358,7 @@ func (s *OutputRoomEventConsumer) onOldRoomEvent(
 	}
 
 	s.pduStream.Advance(pduPos)
-	s.notifier.OnNewEvent(ev, ev.RoomID(), nil, types.StreamingToken{PDUPosition: pduPos})
+	s.notifier.OnNewEvent(ev, ev.RoomID().String(), nil, types.StreamingToken{PDUPosition: pduPos})
 
 	return nil
 }
@@ -387,11 +378,7 @@ func (s *OutputRoomEventConsumer) notifyJoinedPeeks(ctx context.Context, ev *rst
 			return sp, fmt.Errorf("unexpected nil state_key")
 		}
 
-		validRoomID, err := spec.NewRoomID(ev.RoomID())
+		userID, err := s.rsAPI.QueryUserIDForSender(ctx, ev.RoomID(), spec.SenderID(*ev.StateKey()))
-		if err != nil {
-			return sp, err
-		}
-		userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*ev.StateKey()))
 		if err != nil || userID == nil {
 			return sp, fmt.Errorf("failed getting userID for sender: %w", err)
 		}
@@ -400,7 +387,7 @@ func (s *OutputRoomEventConsumer) notifyJoinedPeeks(ctx context.Context, ev *rst
 		}
 
 		// cancel any peeks for it
-		peekSP, peekErr := s.db.DeletePeeks(ctx, ev.RoomID(), *ev.StateKey())
+		peekSP, peekErr := s.db.DeletePeeks(ctx, ev.RoomID().String(), *ev.StateKey())
 		if peekErr != nil {
 			return sp, fmt.Errorf("s.db.DeletePeeks: %w", peekErr)
 		}
@@ -418,11 +405,7 @@ func (s *OutputRoomEventConsumer) onNewInviteEvent(
 		return
 	}
 
-	validRoomID, err := spec.NewRoomID(msg.Event.RoomID())
+	userID, err := s.rsAPI.QueryUserIDForSender(ctx, msg.Event.RoomID(), spec.SenderID(*msg.Event.StateKey()))
-	if err != nil {
-		return
-	}
-	userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*msg.Event.StateKey()))
 	if err != nil || userID == nil {
 		return
 	}
@@ -559,15 +542,10 @@ func (s *OutputRoomEventConsumer) updateStateEvent(event *rstypes.HeaderedEvent)
 	var succeeded bool
 	defer sqlutil.EndTransactionWithCheck(snapshot, &succeeded, &err)
 
-	validRoomID, err := spec.NewRoomID(event.RoomID())
-	if err != nil {
-		return event, err
-	}
-
 	sKeyUser := ""
 	if stateKey != "" {
 		var sku *spec.UserID
-		sku, err = s.rsAPI.QueryUserIDForSender(s.ctx, *validRoomID, spec.SenderID(stateKey))
+		sku, err = s.rsAPI.QueryUserIDForSender(s.ctx, event.RoomID(), spec.SenderID(stateKey))
 		if err == nil && sku != nil {
 			sKeyUser = sku.String()
 			event.StateKeyResolved = &sKeyUser
@@ -575,13 +553,13 @@ func (s *OutputRoomEventConsumer) updateStateEvent(event *rstypes.HeaderedEvent)
 	}
 
 	prevEvent, err := snapshot.GetStateEvent(
-		s.ctx, event.RoomID(), event.Type(), sKeyUser,
+		s.ctx, event.RoomID().String(), event.Type(), sKeyUser,
 	)
 	if err != nil {
 		return event, err
 	}
 
-	userID, err := s.rsAPI.QueryUserIDForSender(s.ctx, *validRoomID, event.SenderID())
+	userID, err := s.rsAPI.QueryUserIDForSender(s.ctx, event.RoomID(), event.SenderID())
 	if err != nil {
 		return event, err
 	}
@@ -592,16 +570,10 @@ func (s *OutputRoomEventConsumer) updateStateEvent(event *rstypes.HeaderedEvent)
 		return event, nil
 	}
 
-	prevEventSender := string(prevEvent.SenderID())
+	prev := synctypes.PrevEventRef{
-	prevUser, err := s.rsAPI.QueryUserIDForSender(s.ctx, *validRoomID, prevEvent.SenderID())
-	if err == nil && prevUser != nil {
-		prevEventSender = prevUser.String()
-	}
-
-	prev := types.PrevEventRef{
 		PrevContent:   prevEvent.Content(),
 		ReplacesState: prevEvent.EventID(),
-		PrevSenderID:  prevEventSender,
+		PrevSenderID:  string(prevEvent.SenderID()),
 	}
 
 	event.PDU, err = event.SetUnsigned(prev)
@@ -615,7 +587,7 @@ func (s *OutputRoomEventConsumer) writeFTS(ev *rstypes.HeaderedEvent, pduPositio
 	}
 	e := fulltext.IndexElement{
 		EventID:        ev.EventID(),
-		RoomID:         ev.RoomID(),
+		RoomID:         ev.RoomID().String(),
 		StreamPosition: int64(pduPosition),
 	}
 	e.SetContentType(ev.Type())

syncapi/internal/history_visibility.go

@@ -118,26 +118,23 @@ func ApplyHistoryVisibilityFilter(
 	start := time.Now()
 
 	// try to get the current membership of the user
-	membershipCurrent, _, err := syncDB.SelectMembershipForUser(ctx, events[0].RoomID(), userID.String(), math.MaxInt64)
+	membershipCurrent, _, err := syncDB.SelectMembershipForUser(ctx, events[0].RoomID().String(), userID.String(), math.MaxInt64)
 	if err != nil {
 		return nil, err
 	}
 
 	// Get the mapping from eventID -> eventVisibility
 	eventsFiltered := make([]*types.HeaderedEvent, 0, len(events))
-	firstEvRoomID, err := spec.NewRoomID(events[0].RoomID())
+	firstEvRoomID := events[0].RoomID()
+	senderID, err := rsAPI.QuerySenderIDForUser(ctx, firstEvRoomID, userID)
 	if err != nil {
 		return nil, err
 	}
-	senderID, err := rsAPI.QuerySenderIDForUser(ctx, *firstEvRoomID, userID)
+	visibilities := visibilityForEvents(ctx, rsAPI, events, senderID, firstEvRoomID)
-	if err != nil {
-		return nil, err
-	}
-	visibilities := visibilityForEvents(ctx, rsAPI, events, senderID, *firstEvRoomID)
 
 	for _, ev := range events {
 		// Validate same room assumption
-		if ev.RoomID() != firstEvRoomID.String() {
+		if ev.RoomID().String() != firstEvRoomID.String() {
 			return nil, fmt.Errorf("events from different rooms supplied to ApplyHistoryVisibilityFilter")
 		}
 

syncapi/notifier/notifier.go

@@ -101,20 +101,13 @@ func (n *Notifier) OnNewEvent(
 	n._removeEmptyUserStreams()
 
 	if ev != nil {
-		validRoomID, err := spec.NewRoomID(ev.RoomID())
-		if err != nil {
-			log.WithError(err).WithField("event_id", ev.EventID()).Errorf(
-				"Notifier.OnNewEvent: RoomID is invalid",
-			)
-			return
-		}
 		// Map this event's room_id to a list of joined users, and wake them up.
-		usersToNotify := n._joinedUsers(ev.RoomID())
+		usersToNotify := n._joinedUsers(ev.RoomID().String())
 		// Map this event's room_id to a list of peeking devices, and wake them up.
-		peekingDevicesToNotify := n._peekingDevices(ev.RoomID())
+		peekingDevicesToNotify := n._peekingDevices(ev.RoomID().String())
 		// If this is an invite, also add in the invitee to this list.
 		if ev.Type() == "m.room.member" && ev.StateKey() != nil {
-			targetUserID, err := n.rsAPI.QueryUserIDForSender(context.Background(), *validRoomID, spec.SenderID(*ev.StateKey()))
+			targetUserID, err := n.rsAPI.QueryUserIDForSender(context.Background(), ev.RoomID(), spec.SenderID(*ev.StateKey()))
 			if err != nil || targetUserID == nil {
 				log.WithError(err).WithField("event_id", ev.EventID()).Errorf(
 					"Notifier.OnNewEvent: Failed to find the userID for this event",
@@ -134,11 +127,11 @@ func (n *Notifier) OnNewEvent(
 						// Manually append the new user's ID so they get notified
 						// along all members in the room
 						usersToNotify = append(usersToNotify, targetUserID.String())
-						n._addJoinedUser(ev.RoomID(), targetUserID.String())
+						n._addJoinedUser(ev.RoomID().String(), targetUserID.String())
 					case spec.Leave:
 						fallthrough
 					case spec.Ban:
-						n._removeJoinedUser(ev.RoomID(), targetUserID.String())
+						n._removeJoinedUser(ev.RoomID().String(), targetUserID.String())
 					}
 				}
 			}

syncapi/routing/getevent.go

@@ -118,32 +118,19 @@ func GetEvent(
 		}
 	}
 
-	senderUserID, err := rsAPI.QueryUserIDForSender(req.Context(), *roomID, events[0].SenderID())
+	clientEvent, err := synctypes.ToClientEvent(events[0], synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-	if err != nil || senderUserID == nil {
+		return rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
-		util.GetLogger(req.Context()).WithError(err).WithField("senderID", events[0].SenderID()).WithField("roomID", *roomID).Error("QueryUserIDForSender errored or returned nil-user ID when user should be part of a room")
+	})
+	if err != nil {
+		util.GetLogger(req.Context()).WithError(err).WithField("senderID", events[0].SenderID()).WithField("roomID", *roomID).Error("Failed converting to ClientEvent")
 		return util.JSONResponse{
 			Code: http.StatusInternalServerError,
 			JSON: spec.Unknown("internal server error"),
 		}
 	}
 
-	sk := events[0].StateKey()
-	if sk != nil && *sk != "" {
-		evRoomID, err := spec.NewRoomID(events[0].RoomID())
-		if err != nil {
-			return util.JSONResponse{
-				Code: http.StatusBadRequest,
-				JSON: spec.BadJSON("roomID is invalid"),
-			}
-		}
-		skUserID, err := rsAPI.QueryUserIDForSender(ctx, *evRoomID, spec.SenderID(*events[0].StateKey()))
-		if err == nil && skUserID != nil {
-			skString := skUserID.String()
-			sk = &skString
-		}
-	}
 	return util.JSONResponse{
 		Code: http.StatusOK,
-		JSON: synctypes.ToClientEvent(events[0], synctypes.FormatAll, *senderUserID, sk),
+		JSON: *clientEvent,
 	}
 }

syncapi/routing/memberships.go

@@ -152,15 +152,7 @@ func GetMemberships(
 				}
 			}
 
-			validRoomID, err := spec.NewRoomID(ev.RoomID())
+			userID, err := rsAPI.QueryUserIDForSender(req.Context(), ev.RoomID(), ev.SenderID())
-			if err != nil {
-				util.GetLogger(req.Context()).WithError(err).Error("roomID is invalid")
-				return util.JSONResponse{
-					Code: http.StatusInternalServerError,
-					JSON: spec.InternalServerError{},
-				}
-			}
-			userID, err := rsAPI.QueryUserIDForSender(req.Context(), *validRoomID, ev.SenderID())
 			if err != nil || userID == nil {
 				util.GetLogger(req.Context()).WithError(err).Error("rsAPI.QueryUserIDForSender failed")
 				return util.JSONResponse{

syncapi/routing/relations.go

@@ -130,23 +130,16 @@ func Relations(
 	// type if it was specified.
 	res.Chunk = make([]synctypes.ClientEvent, 0, len(filteredEvents))
 	for _, event := range filteredEvents {
-		sender := spec.UserID{}
+		clientEvent, err := synctypes.ToClientEvent(event.PDU, synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-		userID, err := rsAPI.QueryUserIDForSender(req.Context(), *roomID, event.SenderID())
+			return rsAPI.QueryUserIDForSender(req.Context(), roomID, senderID)
-		if err == nil && userID != nil {
+		})
-			sender = *userID
+		if err != nil {
-		}
+			util.GetLogger(req.Context()).WithError(err).WithField("senderID", events[0].SenderID()).WithField("roomID", *roomID).Error("Failed converting to ClientEvent")
-
+			continue
-		sk := event.StateKey()
-		if sk != nil && *sk != "" {
-			skUserID, err := rsAPI.QueryUserIDForSender(req.Context(), *roomID, spec.SenderID(*event.StateKey()))
-			if err == nil && skUserID != nil {
-				skString := skUserID.String()
-				sk = &skString
-			}
 		}
 		res.Chunk = append(
 			res.Chunk,
-			synctypes.ToClientEvent(event.PDU, synctypes.FormatAll, sender, sk),
+			*clientEvent,
 		)
 	}
 

syncapi/routing/search.go

@@ -205,12 +205,7 @@ func Search(req *http.Request, device *api.Device, syncDB storage.Database, fts
 
 		profileInfos := make(map[string]ProfileInfoResponse)
 		for _, ev := range append(eventsBefore, eventsAfter...) {
-			validRoomID, roomErr := spec.NewRoomID(ev.RoomID())
+			userID, queryErr := rsAPI.QueryUserIDForSender(req.Context(), ev.RoomID(), ev.SenderID())
-			if err != nil {
-				logrus.WithError(roomErr).WithField("room_id", ev.RoomID()).Warn("failed to query userprofile")
-				continue
-			}
-			userID, queryErr := rsAPI.QueryUserIDForSender(req.Context(), *validRoomID, ev.SenderID())
 			if queryErr != nil {
 				logrus.WithError(queryErr).WithField("sender_id", ev.SenderID()).Warn("failed to query userprofile")
 				continue
@@ -218,7 +213,7 @@ func Search(req *http.Request, device *api.Device, syncDB storage.Database, fts
 
 			profile, ok := knownUsersProfiles[userID.String()]
 			if !ok {
-				stateEvent, stateErr := snapshot.GetStateEvent(ctx, ev.RoomID(), spec.MRoomMember, string(ev.SenderID()))
+				stateEvent, stateErr := snapshot.GetStateEvent(ctx, ev.RoomID().String(), spec.MRoomMember, string(ev.SenderID()))
 				if stateErr != nil {
 					logrus.WithError(stateErr).WithField("sender_id", event.SenderID()).Warn("failed to query userprofile")
 					continue
@@ -235,25 +230,14 @@ func Search(req *http.Request, device *api.Device, syncDB storage.Database, fts
 			profileInfos[userID.String()] = profile
 		}
 
-		sender := spec.UserID{}
+		clientEvent, err := synctypes.ToClientEvent(event, synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-		validRoomID, roomErr := spec.NewRoomID(event.RoomID())
+			return rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
+		})
 		if err != nil {
-			logrus.WithError(roomErr).WithField("room_id", event.RoomID()).Warn("failed to query userprofile")
+			util.GetLogger(req.Context()).WithError(err).WithField("senderID", event.SenderID()).Error("Failed converting to ClientEvent")
 			continue
 		}
-		userID, err := rsAPI.QueryUserIDForSender(req.Context(), *validRoomID, event.SenderID())
-		if err == nil && userID != nil {
-			sender = *userID
-		}
 
-		sk := event.StateKey()
-		if sk != nil && *sk != "" {
-			skUserID, err := rsAPI.QueryUserIDForSender(req.Context(), *validRoomID, spec.SenderID(*event.StateKey()))
-			if err == nil && skUserID != nil {
-				skString := skUserID.String()
-				sk = &skString
-			}
-		}
 		results = append(results, Result{
 			Context: SearchContextResponse{
 				Start: startToken.String(),
@@ -267,14 +251,14 @@ func Search(req *http.Request, device *api.Device, syncDB storage.Database, fts
 				ProfileInfo: profileInfos,
 			},
 			Rank:   eventScore[event.EventID()].Score,
-			Result: synctypes.ToClientEvent(event, synctypes.FormatAll, sender, sk),
+			Result: *clientEvent,
 		})
-		roomGroup := groups[event.RoomID()]
+		roomGroup := groups[event.RoomID().String()]
 		roomGroup.Results = append(roomGroup.Results, event.EventID())
-		groups[event.RoomID()] = roomGroup
+		groups[event.RoomID().String()] = roomGroup
-		if _, ok := stateForRooms[event.RoomID()]; searchReq.SearchCategories.RoomEvents.IncludeState && !ok {
+		if _, ok := stateForRooms[event.RoomID().String()]; searchReq.SearchCategories.RoomEvents.IncludeState && !ok {
 			stateFilter := synctypes.DefaultStateFilter()
-			state, err := snapshot.CurrentState(ctx, event.RoomID(), &stateFilter, nil)
+			state, err := snapshot.CurrentState(ctx, event.RoomID().String(), &stateFilter, nil)
 			if err != nil {
 				logrus.WithError(err).Error("unable to get current state")
 				return util.JSONResponse{
@@ -282,7 +266,7 @@ func Search(req *http.Request, device *api.Device, syncDB storage.Database, fts
 					JSON: spec.InternalServerError{},
 				}
 			}
-			stateForRooms[event.RoomID()] = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(state), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+			stateForRooms[event.RoomID().String()] = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(state), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 				return rsAPI.QueryUserIDForSender(req.Context(), roomID, senderID)
 			})
 		}
@@ -328,19 +312,19 @@ func contextEvents(
 	roomFilter *synctypes.RoomEventFilter,
 	searchReq SearchRequest,
 ) ([]*types.HeaderedEvent, []*types.HeaderedEvent, error) {
-	id, _, err := snapshot.SelectContextEvent(ctx, event.RoomID(), event.EventID())
+	id, _, err := snapshot.SelectContextEvent(ctx, event.RoomID().String(), event.EventID())
 	if err != nil {
 		logrus.WithError(err).Error("failed to query context event")
 		return nil, nil, err
 	}
 	roomFilter.Limit = searchReq.SearchCategories.RoomEvents.EventContext.BeforeLimit
-	eventsBefore, err := snapshot.SelectContextBeforeEvent(ctx, id, event.RoomID(), roomFilter)
+	eventsBefore, err := snapshot.SelectContextBeforeEvent(ctx, id, event.RoomID().String(), roomFilter)
 	if err != nil {
 		logrus.WithError(err).Error("failed to query before context event")
 		return nil, nil, err
 	}
 	roomFilter.Limit = searchReq.SearchCategories.RoomEvents.EventContext.AfterLimit
-	_, eventsAfter, err := snapshot.SelectContextAfterEvent(ctx, id, event.RoomID(), roomFilter)
+	_, eventsAfter, err := snapshot.SelectContextAfterEvent(ctx, id, event.RoomID().String(), roomFilter)
 	if err != nil {
 		logrus.WithError(err).Error("failed to query after context event")
 		return nil, nil, err

syncapi/routing/search_test.go

@@ -238,7 +238,7 @@ func TestSearch(t *testing.T) {
 			}
 			elements = append(elements, fulltext.IndexElement{
 				EventID:        x.EventID(),
-				RoomID:         x.RoomID(),
+				RoomID:         x.RoomID().String(),
 				Content:        string(x.Content()),
 				ContentType:    x.Type(),
 				StreamPosition: int64(sp),

syncapi/storage/postgres/current_room_state_table.go

@@ -340,7 +340,7 @@ func (s *currentRoomStateStatements) UpsertRoomState(
 	stmt := sqlutil.TxStmt(txn, s.upsertRoomStateStmt)
 	_, err = stmt.ExecContext(
 		ctx,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.EventID(),
 		event.Type(),
 		event.UserID.String(),

syncapi/storage/postgres/invites_table.go

@@ -99,7 +99,7 @@ func (s *inviteEventsStatements) InsertInviteEvent(
 
 	err = sqlutil.TxStmt(txn, s.insertInviteEventStmt).QueryRowContext(
 		ctx,
-		inviteEvent.RoomID(),
+		inviteEvent.RoomID().String(),
 		inviteEvent.EventID(),
 		inviteEvent.UserID.String(),
 		headeredJSON,

syncapi/storage/postgres/memberships_table.go

@@ -108,7 +108,7 @@ func (s *membershipsStatements) UpsertMembership(
 	}
 	_, err = sqlutil.TxStmt(txn, s.upsertMembershipStmt).ExecContext(
 		ctx,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.StateKeyResolved,
 		membership,
 		event.EventID(),

syncapi/storage/postgres/output_room_events_table.go

@@ -334,7 +334,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		if err := json.Unmarshal(eventBytes, &ev); err != nil {
 			return nil, nil, err
 		}
-		needSet := stateNeeded[ev.RoomID()]
+		needSet := stateNeeded[ev.RoomID().String()]
 		if needSet == nil { // make set if required
 			needSet = make(map[string]bool)
 		}
@@ -344,7 +344,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		for _, id := range addIDs {
 			needSet[id] = true
 		}
-		stateNeeded[ev.RoomID()] = needSet
+		stateNeeded[ev.RoomID().String()] = needSet
 		ev.Visibility = historyVisibility
 
 		eventIDToEvent[eventID] = types.StreamEvent{
@@ -403,7 +403,7 @@ func (s *outputRoomEventsStatements) InsertEvent(
 	stmt := sqlutil.TxStmt(txn, s.insertEventStmt)
 	err = stmt.QueryRowContext(
 		ctx,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.EventID(),
 		headeredJSON,
 		event.Type(),

syncapi/storage/postgres/output_room_events_topology_table.go

@@ -107,7 +107,7 @@ func (s *outputRoomEventsTopologyStatements) InsertEventInTopology(
 	ctx context.Context, txn *sql.Tx, event *rstypes.HeaderedEvent, pos types.StreamPosition,
 ) (topoPos types.StreamPosition, err error) {
 	err = sqlutil.TxStmt(txn, s.insertEventInTopologyStmt).QueryRowContext(
-		ctx, event.EventID(), event.Depth(), event.RoomID(), pos,
+		ctx, event.EventID(), event.Depth(), event.RoomID().String(), pos,
 	).Scan(&topoPos)
 	return
 }

syncapi/storage/shared/storage_consumer.go

@@ -114,14 +114,7 @@ func (d *Database) StreamEventsToEvents(ctx context.Context, device *userapi.Dev
 				}).WithError(err).Warnf("Failed to add transaction ID to event")
 				continue
 			}
-			roomID, err := spec.NewRoomID(in[i].RoomID())
+			deviceSenderID, err := rsAPI.QuerySenderIDForUser(ctx, in[i].RoomID(), *userID)
-			if err != nil {
-				logrus.WithFields(logrus.Fields{
-					"event_id": out[i].EventID(),
-				}).WithError(err).Warnf("Room ID is invalid")
-				continue
-			}
-			deviceSenderID, err := rsAPI.QuerySenderIDForUser(ctx, *roomID, *userID)
 			if err != nil || deviceSenderID == nil {
 				logrus.WithFields(logrus.Fields{
 					"event_id": out[i].EventID(),
@@ -236,7 +229,7 @@ func (d *Database) UpsertAccountData(
 // to account for the fact that the given event is no longer a backwards extremity, but may be marked as such.
 // This function should always be called within a sqlutil.Writer for safety in SQLite.
 func (d *Database) handleBackwardExtremities(ctx context.Context, txn *sql.Tx, ev *rstypes.HeaderedEvent) error {
-	if err := d.BackwardExtremities.DeleteBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID()); err != nil {
+	if err := d.BackwardExtremities.DeleteBackwardExtremity(ctx, txn, ev.RoomID().String(), ev.EventID()); err != nil {
 		return err
 	}
 
@@ -257,7 +250,7 @@ func (d *Database) handleBackwardExtremities(ctx context.Context, txn *sql.Tx, e
 
 		// If the event is missing, consider it a backward extremity.
 		if !found {
-			if err = d.BackwardExtremities.InsertsBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID(), eID); err != nil {
+			if err = d.BackwardExtremities.InsertsBackwardExtremity(ctx, txn, ev.RoomID().String(), ev.EventID(), eID); err != nil {
 				return err
 			}
 		}
@@ -426,7 +419,7 @@ func (d *Database) fetchStateEvents(
 		}
 		// we know we got them all otherwise an error would've been returned, so just loop the events
 		for _, ev := range evs {
-			roomID := ev.RoomID()
+			roomID := ev.RoomID().String()
 			stateBetween[roomID] = append(stateBetween[roomID], ev)
 		}
 	}
@@ -522,11 +515,7 @@ func getMembershipFromEvent(ctx context.Context, ev gomatrixserverlib.PDU, userI
 	if err != nil {
 		return "", ""
 	}
-	roomID, err := spec.NewRoomID(ev.RoomID())
+	senderID, err := rsAPI.QuerySenderIDForUser(ctx, ev.RoomID(), *fullUser)
-	if err != nil {
-		return "", ""
-	}
-	senderID, err := rsAPI.QuerySenderIDForUser(ctx, *roomID, *fullUser)
 	if err != nil || senderID == nil {
 		return "", ""
 	}
@@ -626,7 +615,7 @@ func (d *Database) UpdateRelations(ctx context.Context, event *rstypes.HeaderedE
 	default:
 		return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
 			return d.Relations.InsertRelation(
-				ctx, txn, event.RoomID(), content.Relations.EventID,
+				ctx, txn, event.RoomID().String(), content.Relations.EventID,
 				event.EventID(), event.Type(), content.Relations.RelationType,
 			)
 		})

syncapi/storage/sqlite3/current_room_state_table.go

@@ -339,7 +339,7 @@ func (s *currentRoomStateStatements) UpsertRoomState(
 	stmt := sqlutil.TxStmt(txn, s.upsertRoomStateStmt)
 	_, err = stmt.ExecContext(
 		ctx,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.EventID(),
 		event.Type(),
 		event.UserID.String(),

syncapi/storage/sqlite3/invites_table.go

@@ -106,7 +106,7 @@ func (s *inviteEventsStatements) InsertInviteEvent(
 	_, err = stmt.ExecContext(
 		ctx,
 		streamPos,
-		inviteEvent.RoomID(),
+		inviteEvent.RoomID().String(),
 		inviteEvent.EventID(),
 		inviteEvent.UserID.String(),
 		headeredJSON,

syncapi/storage/sqlite3/memberships_table.go

@@ -111,7 +111,7 @@ func (s *membershipsStatements) UpsertMembership(
 	}
 	_, err = sqlutil.TxStmt(txn, s.upsertMembershipStmt).ExecContext(
 		ctx,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.StateKeyResolved,
 		membership,
 		event.EventID(),

syncapi/storage/sqlite3/output_room_events_table.go

@@ -254,7 +254,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		if err := json.Unmarshal(eventBytes, &ev); err != nil {
 			return nil, nil, err
 		}
-		needSet := stateNeeded[ev.RoomID()]
+		needSet := stateNeeded[ev.RoomID().String()]
 		if needSet == nil { // make set if required
 			needSet = make(map[string]bool)
 		}
@@ -264,7 +264,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		for _, id := range addIDs {
 			needSet[id] = true
 		}
-		stateNeeded[ev.RoomID()] = needSet
+		stateNeeded[ev.RoomID().String()] = needSet
 		ev.Visibility = historyVisibility
 
 		eventIDToEvent[eventID] = types.StreamEvent{
@@ -344,7 +344,7 @@ func (s *outputRoomEventsStatements) InsertEvent(
 	_, err = insertStmt.ExecContext(
 		ctx,
 		streamPos,
-		event.RoomID(),
+		event.RoomID().String(),
 		event.EventID(),
 		headeredJSON,
 		event.Type(),

syncapi/storage/sqlite3/output_room_events_topology_table.go

@@ -106,7 +106,7 @@ func (s *outputRoomEventsTopologyStatements) InsertEventInTopology(
 	ctx context.Context, txn *sql.Tx, event *rstypes.HeaderedEvent, pos types.StreamPosition,
 ) (types.StreamPosition, error) {
 	_, err := sqlutil.TxStmt(txn, s.insertEventInTopologyStmt).ExecContext(
-		ctx, event.EventID(), event.Depth(), event.RoomID(), pos,
+		ctx, event.EventID(), event.Depth(), event.RoomID().String(), pos,
 	)
 	return types.StreamPosition(event.Depth()), err
 }

syncapi/streams/stream_invite.go

@@ -63,31 +63,27 @@ func (p *InviteStreamProvider) IncrementalSync(
 		return from
 	}
 
-	for roomID, inviteEvent := range invites {
+	eventFormat := synctypes.FormatSync
-		user := spec.UserID{}
+	if req.Filter.EventFormat == synctypes.EventFormatFederation {
-		validRoomID, err := spec.NewRoomID(inviteEvent.RoomID())
+		eventFormat = synctypes.FormatSyncFederation
-		if err != nil {
-			continue
-		}
-		sender, err := p.rsAPI.QueryUserIDForSender(ctx, *validRoomID, inviteEvent.SenderID())
-		if err == nil && sender != nil {
-			user = *sender
 	}
 
-		sk := inviteEvent.StateKey()
+	for roomID, inviteEvent := range invites {
-		if sk != nil && *sk != "" {
+		user := spec.UserID{}
-			skUserID, err := p.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*inviteEvent.StateKey()))
+		sender, err := p.rsAPI.QueryUserIDForSender(ctx, inviteEvent.RoomID(), inviteEvent.SenderID())
-			if err == nil && skUserID != nil {
+		if err == nil && sender != nil {
-				skString := skUserID.String()
+			user = *sender
-				sk = &skString
-			}
 		}
 
 		// skip ignored user events
 		if _, ok := req.IgnoredUsers.List[user.String()]; ok {
 			continue
 		}
-		ir := types.NewInviteResponse(inviteEvent, user, sk)
+		ir, err := types.NewInviteResponse(ctx, p.rsAPI, inviteEvent, eventFormat)
+		if err != nil {
+			req.Log.WithError(err).Error("failed creating invite response")
+			continue
+		}
 		req.Response.Rooms.Invite[roomID] = ir
 	}
 

syncapi/streams/stream_pdu.go

@@ -3,7 +3,6 @@ package streams
 import (
 	"context"
 	"database/sql"
-	"encoding/json"
 	"fmt"
 	"time"
 
@@ -16,8 +15,6 @@ import (
 	"github.com/matrix-org/dendrite/syncapi/types"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
 	"github.com/matrix-org/gomatrixserverlib/spec"
-	"github.com/tidwall/gjson"
-	"github.com/tidwall/sjson"
 
 	"github.com/matrix-org/dendrite/syncapi/notifier"
 	"github.com/matrix-org/gomatrixserverlib"
@@ -88,6 +85,11 @@ func (p *PDUStreamProvider) CompleteSync(
 		req.Log.WithError(err).Error("unable to update event filter with ignored users")
 	}
 
+	eventFormat := synctypes.FormatSync
+	if req.Filter.EventFormat == synctypes.EventFormatFederation {
+		eventFormat = synctypes.FormatSyncFederation
+	}
+
 	recentEvents, err := snapshot.RecentEvents(ctx, joinedRoomIDs, r, &eventFilter, true, true)
 	if err != nil {
 		return from
@@ -105,7 +107,7 @@ func (p *PDUStreamProvider) CompleteSync(
 		// get the join response for each room
 		jr, jerr := p.getJoinResponseForCompleteSync(
 			ctx, snapshot, roomID, &stateFilter, req.WantFullState, req.Device, false,
-			events.Events, events.Limited,
+			events.Events, events.Limited, eventFormat,
 		)
 		if jerr != nil {
 			req.Log.WithError(jerr).Error("p.getJoinResponseForCompleteSync failed")
@@ -142,7 +144,7 @@ func (p *PDUStreamProvider) CompleteSync(
 			events := recentEvents[roomID]
 			jr, err = p.getJoinResponseForCompleteSync(
 				ctx, snapshot, roomID, &stateFilter, req.WantFullState, req.Device, true,
-				events.Events, events.Limited,
+				events.Events, events.Limited, eventFormat,
 			)
 			if err != nil {
 				req.Log.WithError(err).Error("p.getJoinResponseForCompleteSync failed")
@@ -346,26 +348,14 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 		return r.From, fmt.Errorf("p.DB.GetBackwardTopologyPos: %w", err)
 	}
 
+	eventFormat := synctypes.FormatSync
+	if req.Filter.EventFormat == synctypes.EventFormatFederation {
+		eventFormat = synctypes.FormatSyncFederation
+	}
+
 	// Now that we've filtered the timeline, work out which state events are still
 	// left. Anything that appears in the filtered timeline will be removed from the
 	// "state" section and kept in "timeline".
-
-	// update the powerlevel event for timeline events
-	for i, ev := range events {
-		if ev.Version() != gomatrixserverlib.RoomVersionPseudoIDs {
-			continue
-		}
-		if ev.Type() != spec.MRoomPowerLevels || !ev.StateKeyEquals("") {
-			continue
-		}
-		var newEvent gomatrixserverlib.PDU
-		newEvent, err = p.updatePowerLevelEvent(ctx, ev)
-		if err != nil {
-			return r.From, err
-		}
-		events[i] = &rstypes.HeaderedEvent{PDU: newEvent}
-	}
-
 	sEvents := gomatrixserverlib.HeaderedReverseTopologicalOrdering(
 		gomatrixserverlib.ToPDUs(removeDuplicates(delta.StateEvents, events)),
 		gomatrixserverlib.TopologicalOrderByAuthEvents,
@@ -380,15 +370,6 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 			continue
 		}
 		delta.StateEvents[i-skipped] = he
-		// update the powerlevel event for state events
-		if ev.Version() == gomatrixserverlib.RoomVersionPseudoIDs && ev.Type() == spec.MRoomPowerLevels && ev.StateKeyEquals("") {
-			var newEvent gomatrixserverlib.PDU
-			newEvent, err = p.updatePowerLevelEvent(ctx, he)
-			if err != nil {
-				return r.From, err
-			}
-			delta.StateEvents[i-skipped] = &rstypes.HeaderedEvent{PDU: newEvent}
-		}
 	}
 	delta.StateEvents = delta.StateEvents[:len(sEvents)-skipped]
 
@@ -413,13 +394,13 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 			}
 		}
 		jr.Timeline.PrevBatch = &prevBatch
-		jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		// If we are limited by the filter AND the history visibility filter
 		// didn't "remove" events, return that the response is limited.
 		jr.Timeline.Limited = (limited && len(events) == len(recentEvents)) || delta.NewlyJoined
-		jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		req.Response.Rooms.Join[delta.RoomID] = jr
@@ -428,11 +409,11 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 		jr := types.NewJoinResponse()
 		jr.Timeline.PrevBatch = &prevBatch
 		// TODO: Apply history visibility on peeked rooms
-		jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(recentEvents), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(recentEvents), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		jr.Timeline.Limited = limited
-		jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		req.Response.Rooms.Peek[delta.RoomID] = jr
@@ -443,13 +424,13 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 	case spec.Ban:
 		lr := types.NewLeaveResponse()
 		lr.Timeline.PrevBatch = &prevBatch
-		lr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		lr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		// If we are limited by the filter AND the history visibility filter
 		// didn't "remove" events, return that the response is limited.
 		lr.Timeline.Limited = limited && len(events) == len(recentEvents)
-		lr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		lr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(delta.StateEvents), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 			return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 		})
 		req.Response.Rooms.Leave[delta.RoomID] = lr
@@ -458,75 +439,6 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 	return latestPosition, nil
 }
 
-func (p *PDUStreamProvider) updatePowerLevelEvent(ctx context.Context, ev *rstypes.HeaderedEvent) (gomatrixserverlib.PDU, error) {
-	pls, err := gomatrixserverlib.NewPowerLevelContentFromEvent(ev)
-	if err != nil {
-		return nil, err
-	}
-	newPls := make(map[string]int64)
-	var userID *spec.UserID
-	for user, level := range pls.Users {
-		validRoomID, _ := spec.NewRoomID(ev.RoomID())
-		userID, err = p.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(user))
-		if err != nil {
-			return nil, err
-		}
-		newPls[userID.String()] = level
-	}
-	var newPlBytes, newEv []byte
-	newPlBytes, err = json.Marshal(newPls)
-	if err != nil {
-		return nil, err
-	}
-	newEv, err = sjson.SetRawBytes(ev.JSON(), "content.users", newPlBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	// do the same for prev content
-	prevContent := gjson.GetBytes(ev.JSON(), "unsigned.prev_content")
-	if !prevContent.Exists() {
-		var evNew gomatrixserverlib.PDU
-		evNew, err = gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON(newEv, false)
-		if err != nil {
-			return nil, err
-		}
-
-		return evNew, err
-	}
-	pls = gomatrixserverlib.PowerLevelContent{}
-	err = json.Unmarshal([]byte(prevContent.Raw), &pls)
-	if err != nil {
-		return nil, err
-	}
-
-	newPls = make(map[string]int64)
-	for user, level := range pls.Users {
-		validRoomID, _ := spec.NewRoomID(ev.RoomID())
-		userID, err = p.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(user))
-		if err != nil {
-			return nil, err
-		}
-		newPls[userID.String()] = level
-	}
-	newPlBytes, err = json.Marshal(newPls)
-	if err != nil {
-		return nil, err
-	}
-	newEv, err = sjson.SetRawBytes(newEv, "unsigned.prev_content.users", newPlBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	var evNew gomatrixserverlib.PDU
-	evNew, err = gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSONWithEventID(ev.EventID(), newEv, false)
-	if err != nil {
-		return nil, err
-	}
-
-	return evNew, err
-}
-
 // applyHistoryVisibilityFilter gets the current room state and supplies it to ApplyHistoryVisibilityFilter, to make
 // sure we always return the required events in the timeline.
 func applyHistoryVisibilityFilter(
@@ -592,6 +504,7 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
 	isPeek bool,
 	recentStreamEvents []types.StreamEvent,
 	limited bool,
+	eventFormat synctypes.ClientEventFormat,
 ) (jr *types.JoinResponse, err error) {
 	jr = types.NewJoinResponse()
 	// TODO: When filters are added, we may need to call this multiple times to get enough events.
@@ -675,43 +588,14 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
 		prevBatch.Decrement()
 	}
 
-	// Update powerlevel events for timeline events
-	for i, ev := range events {
-		if ev.Version() != gomatrixserverlib.RoomVersionPseudoIDs {
-			continue
-		}
-		if ev.Type() != spec.MRoomPowerLevels || !ev.StateKeyEquals("") {
-			continue
-		}
-		newEvent, err := p.updatePowerLevelEvent(ctx, ev)
-		if err != nil {
-			return nil, err
-		}
-		events[i] = &rstypes.HeaderedEvent{PDU: newEvent}
-	}
-	// Update powerlevel events for state events
-	for i, ev := range stateEvents {
-		if ev.Version() != gomatrixserverlib.RoomVersionPseudoIDs {
-			continue
-		}
-		if ev.Type() != spec.MRoomPowerLevels || !ev.StateKeyEquals("") {
-			continue
-		}
-		newEvent, err := p.updatePowerLevelEvent(ctx, ev)
-		if err != nil {
-			return nil, err
-		}
-		stateEvents[i] = &rstypes.HeaderedEvent{PDU: newEvent}
-	}
-
 	jr.Timeline.PrevBatch = prevBatch
-	jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+	jr.Timeline.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(events), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 		return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 	})
 	// If we are limited by the filter AND the history visibility filter
 	// didn't "remove" events, return that the response is limited.
 	jr.Timeline.Limited = limited && len(events) == len(recentEvents)
-	jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(stateEvents), synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+	jr.State.Events = synctypes.ToClientEvents(gomatrixserverlib.ToPDUs(stateEvents), eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
 		return p.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
 	})
 	return jr, nil

syncapi/syncapi_test.go

@@ -209,6 +209,156 @@ func testSyncAccessTokens(t *testing.T, dbType test.DBType) {
 	}
 }
 
+func TestSyncAPIEventFormatPowerLevels(t *testing.T) {
+	test.WithAllDatabases(t, func(t *testing.T, dbType test.DBType) {
+		testSyncEventFormatPowerLevels(t, dbType)
+	})
+}
+
+func testSyncEventFormatPowerLevels(t *testing.T, dbType test.DBType) {
+	user := test.NewUser(t)
+	setRoomVersion := func(t *testing.T, r *test.Room) { r.Version = gomatrixserverlib.RoomVersionPseudoIDs }
+	room := test.NewRoom(t, user, setRoomVersion)
+	alice := userapi.Device{
+		ID:          "ALICEID",
+		UserID:      user.ID,
+		AccessToken: "ALICE_BEARER_TOKEN",
+		DisplayName: "Alice",
+		AccountType: userapi.AccountTypeUser,
+	}
+
+	room.CreateAndInsert(t, user, spec.MRoomPowerLevels, gomatrixserverlib.PowerLevelContent{
+		Users: map[string]int64{
+			user.ID: 100,
+		},
+	}, test.WithStateKey(""))
+
+	cfg, processCtx, close := testrig.CreateConfig(t, dbType)
+	routers := httputil.NewRouters()
+	cm := sqlutil.NewConnectionManager(processCtx, cfg.Global.DatabaseOptions)
+	caches := caching.NewRistrettoCache(128*1024*1024, time.Hour, caching.DisableMetrics)
+	natsInstance := jetstream.NATSInstance{}
+	defer close()
+
+	jsctx, _ := natsInstance.Prepare(processCtx, &cfg.Global.JetStream)
+	defer jetstream.DeleteAllStreams(jsctx, &cfg.Global.JetStream)
+	msgs := toNATSMsgs(t, cfg, room.Events()...)
+	AddPublicRoutes(processCtx, routers, cfg, cm, &natsInstance, &syncUserAPI{accounts: []userapi.Device{alice}}, &syncRoomserverAPI{rooms: []*test.Room{room}}, caches, caching.DisableMetrics)
+	testrig.MustPublishMsgs(t, jsctx, msgs...)
+
+	testCases := []struct {
+		name            string
+		wantCode        int
+		wantJoinedRooms []string
+		eventFormat     synctypes.ClientEventFormat
+	}{
+		{
+			name:            "Client format",
+			wantCode:        200,
+			wantJoinedRooms: []string{room.ID},
+			eventFormat:     synctypes.FormatSync,
+		},
+		{
+			name:            "Federation format",
+			wantCode:        200,
+			wantJoinedRooms: []string{room.ID},
+			eventFormat:     synctypes.FormatSyncFederation,
+		},
+	}
+
+	syncUntil(t, routers, alice.AccessToken, false, func(syncBody string) bool {
+		// wait for the last sent eventID to come down sync
+		path := fmt.Sprintf(`rooms.join.%s.timeline.events.#(event_id=="%s")`, room.ID, room.Events()[len(room.Events())-1].EventID())
+		return gjson.Get(syncBody, path).Exists()
+	})
+
+	for _, tc := range testCases {
+		format := ""
+		if tc.eventFormat == synctypes.FormatSyncFederation {
+			format = "federation"
+		}
+
+		w := httptest.NewRecorder()
+		routers.Client.ServeHTTP(w, test.NewRequest(t, "GET", "/_matrix/client/v3/sync", test.WithQueryParams(map[string]string{
+			"access_token": alice.AccessToken,
+			"timeout":      "0",
+			"filter":       fmt.Sprintf(`{"event_format":"%s"}`, format),
+		})))
+		if w.Code != tc.wantCode {
+			t.Fatalf("%s: got HTTP %d want %d", tc.name, w.Code, tc.wantCode)
+		}
+		if tc.wantJoinedRooms != nil {
+			var res types.Response
+			if err := json.NewDecoder(w.Body).Decode(&res); err != nil {
+				t.Fatalf("%s: failed to decode response body: %s", tc.name, err)
+			}
+			if len(res.Rooms.Join) != len(tc.wantJoinedRooms) {
+				t.Errorf("%s: got %v joined rooms, want %v.\nResponse: %+v", tc.name, len(res.Rooms.Join), len(tc.wantJoinedRooms), res)
+			}
+			t.Logf("res: %+v", res.Rooms.Join[room.ID])
+
+			gotEventIDs := make([]string, len(res.Rooms.Join[room.ID].Timeline.Events))
+			for i, ev := range res.Rooms.Join[room.ID].Timeline.Events {
+				gotEventIDs[i] = ev.EventID
+			}
+			test.AssertEventIDsEqual(t, gotEventIDs, room.Events())
+
+			event := room.CreateAndInsert(t, user, spec.MRoomPowerLevels, gomatrixserverlib.PowerLevelContent{
+				Users: map[string]int64{
+					user.ID:                100,
+					"@otheruser:localhost": 50,
+				},
+			}, test.WithStateKey(""))
+
+			msgs := toNATSMsgs(t, cfg, event)
+			testrig.MustPublishMsgs(t, jsctx, msgs...)
+
+			syncUntil(t, routers, alice.AccessToken, false, func(syncBody string) bool {
+				// wait for the last sent eventID to come down sync
+				path := fmt.Sprintf(`rooms.join.%s.timeline.events.#(event_id=="%s")`, room.ID, room.Events()[len(room.Events())-1].EventID())
+				return gjson.Get(syncBody, path).Exists()
+			})
+
+			since := res.NextBatch.String()
+			w := httptest.NewRecorder()
+			routers.Client.ServeHTTP(w, test.NewRequest(t, "GET", "/_matrix/client/v3/sync", test.WithQueryParams(map[string]string{
+				"access_token": alice.AccessToken,
+				"timeout":      "0",
+				"filter":       fmt.Sprintf(`{"event_format":"%s"}`, format),
+				"since":        since,
+			})))
+			if w.Code != 200 {
+				t.Errorf("since=%s got HTTP %d want 200", since, w.Code)
+			}
+
+			res = *types.NewResponse()
+			if err := json.NewDecoder(w.Body).Decode(&res); err != nil {
+				t.Errorf("failed to decode response body: %s", err)
+			}
+			if len(res.Rooms.Join) != 1 {
+				t.Fatalf("since=%s got %d joined rooms, want 1", since, len(res.Rooms.Join))
+			}
+			gotEventIDs = make([]string, len(res.Rooms.Join[room.ID].Timeline.Events))
+			for j, ev := range res.Rooms.Join[room.ID].Timeline.Events {
+				gotEventIDs[j] = ev.EventID
+				if ev.Type == spec.MRoomPowerLevels {
+					content := gomatrixserverlib.PowerLevelContent{}
+					err := json.Unmarshal(ev.Content, &content)
+					if err != nil {
+						t.Errorf("failed to unmarshal power level content: %s", err)
+					}
+					otherUserLevel := content.UserLevel("@otheruser:localhost")
+					if otherUserLevel != 50 {
+						t.Errorf("Expected user PL of %d but got %d", 50, otherUserLevel)
+					}
+				}
+			}
+			events := []*rstypes.HeaderedEvent{room.Events()[len(room.Events())-1]}
+			test.AssertEventIDsEqual(t, gotEventIDs, events)
+		}
+	}
+}
+
 // Tests what happens when we create a room and then /sync before all events from /createRoom have
 // been sent to the syncapi
 func TestSyncAPICreateRoomSyncEarly(t *testing.T) {
@@ -1251,7 +1401,7 @@ func toNATSMsgs(t *testing.T, cfg *config.Dendrite, input ...*rstypes.HeaderedEv
 		if ev.StateKey() != nil {
 			addsStateIDs = append(addsStateIDs, ev.EventID())
 		}
-		result[i] = testrig.NewOutputEventMsg(t, cfg, ev.RoomID(), api.OutputEvent{
+		result[i] = testrig.NewOutputEventMsg(t, cfg, ev.RoomID().String(), api.OutputEvent{
 			Type: rsapi.OutputTypeNewRoomEvent,
 			NewRoomEvent: &rsapi.OutputNewRoomEvent{
 				Event:             ev,

syncapi/synctypes/clientevent.go

@@ -16,12 +16,23 @@
 package synctypes
 
 import (
+	"encoding/json"
 	"fmt"
 
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/gomatrixserverlib/spec"
+	"github.com/sirupsen/logrus"
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
 )
 
+// PrevEventRef represents a reference to a previous event in a state event upgrade
+type PrevEventRef struct {
+	PrevContent   json.RawMessage `json:"prev_content"`
+	ReplacesState string          `json:"replaces_state"`
+	PrevSenderID  string          `json:"prev_sender"`
+}
+
 type ClientEventFormat int
 
 const (
@@ -30,8 +41,21 @@ const (
 	// FormatSync will include only the event keys required by the /sync API. Notably, this
 	// means the 'room_id' will be missing from the events.
 	FormatSync
+	// FormatSyncFederation will include all event keys normally included in federated events.
+	// This allows clients to request federated formatted events via the /sync API.
+	FormatSyncFederation
 )
 
+// ClientFederationFields extends a ClientEvent to contain the additional fields present in a
+// federation event. Used when the client requests `event_format` of type `federation`.
+type ClientFederationFields struct {
+	Depth      int64        `json:"depth,omitempty"`
+	PrevEvents []string     `json:"prev_events,omitempty"`
+	AuthEvents []string     `json:"auth_events,omitempty"`
+	Signatures spec.RawJSON `json:"signatures,omitempty"`
+	Hashes     spec.RawJSON `json:"hashes,omitempty"`
+}
+
 // ClientEvent is an event which is fit for consumption by clients, in accordance with the specification.
 type ClientEvent struct {
 	Content        spec.RawJSON   `json:"content"`
@@ -44,6 +68,9 @@ type ClientEvent struct {
 	Type           string         `json:"type"`
 	Unsigned       spec.RawJSON   `json:"unsigned,omitempty"`
 	Redacts        string         `json:"redacts,omitempty"`
+
+	// Only sent to clients when `event_format` == `federation`.
+	ClientFederationFields
 }
 
 // ToClientEvents converts server events to client events.
@@ -53,72 +80,24 @@ func ToClientEvents(serverEvs []gomatrixserverlib.PDU, format ClientEventFormat,
 		if se == nil {
 			continue // TODO: shouldn't happen?
 		}
-		sender := spec.UserID{}
+		ev, err := ToClientEvent(se, format, userIDForSender)
-		validRoomID, err := spec.NewRoomID(se.RoomID())
 		if err != nil {
+			logrus.WithError(err).Warn("Failed converting event to ClientEvent")
 			continue
 		}
-		userID, err := userIDForSender(*validRoomID, se.SenderID())
+		evs = append(evs, *ev)
-		if err == nil && userID != nil {
-			sender = *userID
-		}
-
-		sk := se.StateKey()
-		if sk != nil && *sk != "" {
-			skUserID, err := userIDForSender(*validRoomID, spec.SenderID(*sk))
-			if err == nil && skUserID != nil {
-				skString := skUserID.String()
-				sk = &skString
-			}
-		}
-		evs = append(evs, ToClientEvent(se, format, sender, sk))
 	}
 	return evs
 }
 
-// ToClientEvent converts a single server event to a client event.
+// ToClientEventDefault converts a single server event to a client event.
-func ToClientEvent(se gomatrixserverlib.PDU, format ClientEventFormat, sender spec.UserID, stateKey *string) ClientEvent {
-	ce := ClientEvent{
-		Content:        spec.RawJSON(se.Content()),
-		Sender:         sender.String(),
-		Type:           se.Type(),
-		StateKey:       stateKey,
-		Unsigned:       spec.RawJSON(se.Unsigned()),
-		OriginServerTS: se.OriginServerTS(),
-		EventID:        se.EventID(),
-		Redacts:        se.Redacts(),
-	}
-	if format == FormatAll {
-		ce.RoomID = se.RoomID()
-	}
-	if se.Version() == gomatrixserverlib.RoomVersionPseudoIDs {
-		ce.SenderKey = se.SenderID()
-	}
-	return ce
-}
-
-// ToClientEvent converts a single server event to a client event.
 // It provides default logic for event.SenderID & event.StateKey -> userID conversions.
 func ToClientEventDefault(userIDQuery spec.UserIDForSender, event gomatrixserverlib.PDU) ClientEvent {
-	sender := spec.UserID{}
+	ev, err := ToClientEvent(event, FormatAll, userIDQuery)
-	validRoomID, err := spec.NewRoomID(event.RoomID())
 	if err != nil {
 		return ClientEvent{}
 	}
-	userID, err := userIDQuery(*validRoomID, event.SenderID())
+	return *ev
-	if err == nil && userID != nil {
-		sender = *userID
-	}
-
-	sk := event.StateKey()
-	if sk != nil && *sk != "" {
-		skUserID, err := userIDQuery(*validRoomID, spec.SenderID(*event.StateKey()))
-		if err == nil && skUserID != nil {
-			skString := skUserID.String()
-			sk = &skString
-		}
-	}
-	return ToClientEvent(event, FormatAll, sender, sk)
 }
 
 // If provided state key is a user ID (state keys beginning with @ are reserved for this purpose)
@@ -132,11 +111,11 @@ func FromClientStateKey(roomID spec.RoomID, stateKey string, senderIDQuery spec.
 		parsedStateKey, err := spec.NewUserID(stateKey, true)
 		if err != nil {
 			// If invalid user ID, then there is no associated state event.
-			return nil, fmt.Errorf("Provided state key begins with @ but is not a valid user ID: %s", err.Error())
+			return nil, fmt.Errorf("Provided state key begins with @ but is not a valid user ID: %w", err)
 		}
 		senderID, err := senderIDQuery(roomID, *parsedStateKey)
 		if err != nil {
-			return nil, fmt.Errorf("Failed to query sender ID: %s", err.Error())
+			return nil, fmt.Errorf("Failed to query sender ID: %w", err)
 		}
 		if senderID == nil {
 			// If no sender ID, then there is no associated state event.
@@ -148,3 +127,304 @@ func FromClientStateKey(roomID spec.RoomID, stateKey string, senderIDQuery spec.
 		return &stateKey, nil
 	}
 }
+
+// ToClientEvent converts a single server event to a client event.
+func ToClientEvent(se gomatrixserverlib.PDU, format ClientEventFormat, userIDForSender spec.UserIDForSender) (*ClientEvent, error) {
+	ce := ClientEvent{
+		Content:        se.Content(),
+		Sender:         string(se.SenderID()),
+		Type:           se.Type(),
+		StateKey:       se.StateKey(),
+		Unsigned:       se.Unsigned(),
+		OriginServerTS: se.OriginServerTS(),
+		EventID:        se.EventID(),
+		Redacts:        se.Redacts(),
+	}
+
+	switch format {
+	case FormatAll:
+		ce.RoomID = se.RoomID().String()
+	case FormatSync:
+	case FormatSyncFederation:
+		ce.RoomID = se.RoomID().String()
+		ce.AuthEvents = se.AuthEventIDs()
+		ce.PrevEvents = se.PrevEventIDs()
+		ce.Depth = se.Depth()
+		// TODO: Set Signatures & Hashes fields
+	}
+
+	if format != FormatSyncFederation && se.Version() == gomatrixserverlib.RoomVersionPseudoIDs {
+		err := updatePseudoIDs(&ce, se, userIDForSender, format)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &ce, nil
+}
+
+func updatePseudoIDs(ce *ClientEvent, se gomatrixserverlib.PDU, userIDForSender spec.UserIDForSender, format ClientEventFormat) error {
+	ce.SenderKey = se.SenderID()
+
+	userID, err := userIDForSender(se.RoomID(), se.SenderID())
+	if err == nil && userID != nil {
+		ce.Sender = userID.String()
+	}
+
+	sk := se.StateKey()
+	if sk != nil && *sk != "" {
+		skUserID, err := userIDForSender(se.RoomID(), spec.SenderID(*sk))
+		if err == nil && skUserID != nil {
+			skString := skUserID.String()
+			ce.StateKey = &skString
+		}
+	}
+
+	var prev PrevEventRef
+	if err := json.Unmarshal(se.Unsigned(), &prev); err == nil && prev.PrevSenderID != "" {
+		prevUserID, err := userIDForSender(se.RoomID(), spec.SenderID(prev.PrevSenderID))
+		if err == nil && userID != nil {
+			prev.PrevSenderID = prevUserID.String()
+		} else {
+			errString := "userID unknown"
+			if err != nil {
+				errString = err.Error()
+			}
+			logrus.Warnf("Failed to find userID for prev_sender in ClientEvent: %s", errString)
+			// NOTE: Not much can be done here, so leave the previous value in place.
+		}
+		ce.Unsigned, err = json.Marshal(prev)
+		if err != nil {
+			err = fmt.Errorf("Failed to marshal unsigned content for ClientEvent: %w", err)
+			return err
+		}
+	}
+
+	switch se.Type() {
+	case spec.MRoomCreate:
+		updatedContent, err := updateCreateEvent(se.Content(), userIDForSender, se.RoomID())
+		if err != nil {
+			err = fmt.Errorf("Failed to update m.room.create event for ClientEvent: %w", err)
+			return err
+		}
+		ce.Content = updatedContent
+	case spec.MRoomMember:
+		updatedEvent, err := updateInviteEvent(userIDForSender, se, format)
+		if err != nil {
+			err = fmt.Errorf("Failed to update m.room.member event for ClientEvent: %w", err)
+			return err
+		}
+		if updatedEvent != nil {
+			ce.Unsigned = updatedEvent.Unsigned()
+		}
+	case spec.MRoomPowerLevels:
+		updatedEvent, err := updatePowerLevelEvent(userIDForSender, se, format)
+		if err != nil {
+			err = fmt.Errorf("Failed update m.room.power_levels event for ClientEvent: %w", err)
+			return err
+		}
+		if updatedEvent != nil {
+			ce.Content = updatedEvent.Content()
+			ce.Unsigned = updatedEvent.Unsigned()
+		}
+	}
+
+	return nil
+}
+
+func updateCreateEvent(content spec.RawJSON, userIDForSender spec.UserIDForSender, roomID spec.RoomID) (spec.RawJSON, error) {
+	if creator := gjson.GetBytes(content, "creator"); creator.Exists() {
+		oldCreator := creator.Str
+		userID, err := userIDForSender(roomID, spec.SenderID(oldCreator))
+		if err != nil {
+			err = fmt.Errorf("Failed to find userID for creator in ClientEvent: %w", err)
+			return nil, err
+		}
+
+		if userID != nil {
+			var newCreatorBytes, newContent []byte
+			newCreatorBytes, err = json.Marshal(userID.String())
+			if err != nil {
+				err = fmt.Errorf("Failed to marshal new creator for ClientEvent: %w", err)
+				return nil, err
+			}
+
+			newContent, err = sjson.SetRawBytes([]byte(content), "creator", newCreatorBytes)
+			if err != nil {
+				err = fmt.Errorf("Failed to set new creator for ClientEvent: %w", err)
+				return nil, err
+			}
+
+			return newContent, nil
+		}
+	}
+
+	return content, nil
+}
+
+func updateInviteEvent(userIDForSender spec.UserIDForSender, ev gomatrixserverlib.PDU, eventFormat ClientEventFormat) (gomatrixserverlib.PDU, error) {
+	if inviteRoomState := gjson.GetBytes(ev.Unsigned(), "invite_room_state"); inviteRoomState.Exists() {
+		userID, err := userIDForSender(ev.RoomID(), ev.SenderID())
+		if err != nil || userID == nil {
+			if err != nil {
+				err = fmt.Errorf("invalid userID found when updating invite_room_state: %w", err)
+			}
+			return nil, err
+		}
+
+		newState, err := GetUpdatedInviteRoomState(userIDForSender, inviteRoomState, ev, ev.RoomID(), eventFormat)
+		if err != nil {
+			return nil, err
+		}
+
+		var newEv []byte
+		newEv, err = sjson.SetRawBytes(ev.JSON(), "unsigned.invite_room_state", newState)
+		if err != nil {
+			return nil, err
+		}
+
+		return gomatrixserverlib.MustGetRoomVersion(ev.Version()).NewEventFromTrustedJSON(newEv, false)
+	}
+
+	return ev, nil
+}
+
+type InviteRoomStateEvent struct {
+	Content  spec.RawJSON `json:"content"`
+	SenderID string       `json:"sender"`
+	StateKey *string      `json:"state_key"`
+	Type     string       `json:"type"`
+}
+
+func GetUpdatedInviteRoomState(userIDForSender spec.UserIDForSender, inviteRoomState gjson.Result, event gomatrixserverlib.PDU, roomID spec.RoomID, eventFormat ClientEventFormat) (spec.RawJSON, error) {
+	var res spec.RawJSON
+	inviteStateEvents := []InviteRoomStateEvent{}
+	err := json.Unmarshal([]byte(inviteRoomState.Raw), &inviteStateEvents)
+	if err != nil {
+		return nil, err
+	}
+
+	if event.Version() == gomatrixserverlib.RoomVersionPseudoIDs && eventFormat != FormatSyncFederation {
+		for i, ev := range inviteStateEvents {
+			userID, userIDErr := userIDForSender(roomID, spec.SenderID(ev.SenderID))
+			if userIDErr != nil {
+				return nil, userIDErr
+			}
+			if userID != nil {
+				inviteStateEvents[i].SenderID = userID.String()
+			}
+
+			if ev.StateKey != nil && *ev.StateKey != "" {
+				userID, senderErr := userIDForSender(roomID, spec.SenderID(*ev.StateKey))
+				if senderErr != nil {
+					return nil, senderErr
+				}
+				if userID != nil {
+					user := userID.String()
+					inviteStateEvents[i].StateKey = &user
+				}
+			}
+
+			updatedContent, updateErr := updateCreateEvent(ev.Content, userIDForSender, roomID)
+			if updateErr != nil {
+				updateErr = fmt.Errorf("Failed to update m.room.create event for ClientEvent: %w", userIDErr)
+				return nil, updateErr
+			}
+			inviteStateEvents[i].Content = updatedContent
+		}
+	}
+
+	res, err = json.Marshal(inviteStateEvents)
+	if err != nil {
+		return nil, err
+	}
+
+	return res, nil
+}
+
+func updatePowerLevelEvent(userIDForSender spec.UserIDForSender, se gomatrixserverlib.PDU, eventFormat ClientEventFormat) (gomatrixserverlib.PDU, error) {
+	if !se.StateKeyEquals("") {
+		return se, nil
+	}
+
+	newEv := se.JSON()
+
+	usersField := gjson.GetBytes(se.JSON(), "content.users")
+	if usersField.Exists() {
+		pls, err := gomatrixserverlib.NewPowerLevelContentFromEvent(se)
+		if err != nil {
+			return nil, err
+		}
+
+		newPls := make(map[string]int64)
+		var userID *spec.UserID
+		for user, level := range pls.Users {
+			if eventFormat != FormatSyncFederation {
+				userID, err = userIDForSender(se.RoomID(), spec.SenderID(user))
+				if err != nil {
+					return nil, err
+				}
+				user = userID.String()
+			}
+			newPls[user] = level
+		}
+
+		var newPlBytes []byte
+		newPlBytes, err = json.Marshal(newPls)
+		if err != nil {
+			return nil, err
+		}
+		newEv, err = sjson.SetRawBytes(se.JSON(), "content.users", newPlBytes)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// do the same for prev content
+	prevUsersField := gjson.GetBytes(se.JSON(), "unsigned.prev_content.users")
+	if prevUsersField.Exists() {
+		prevContent := gjson.GetBytes(se.JSON(), "unsigned.prev_content")
+		if !prevContent.Exists() {
+			evNew, err := gomatrixserverlib.MustGetRoomVersion(se.Version()).NewEventFromTrustedJSON(newEv, false)
+			if err != nil {
+				return nil, err
+			}
+
+			return evNew, err
+		}
+		pls := gomatrixserverlib.PowerLevelContent{}
+		err := json.Unmarshal([]byte(prevContent.Raw), &pls)
+		if err != nil {
+			return nil, err
+		}
+
+		newPls := make(map[string]int64)
+		for user, level := range pls.Users {
+			if eventFormat != FormatSyncFederation {
+				userID, userErr := userIDForSender(se.RoomID(), spec.SenderID(user))
+				if userErr != nil {
+					return nil, userErr
+				}
+				user = userID.String()
+			}
+			newPls[user] = level
+		}
+
+		var newPlBytes []byte
+		newPlBytes, err = json.Marshal(newPls)
+		if err != nil {
+			return nil, err
+		}
+		newEv, err = sjson.SetRawBytes(newEv, "unsigned.prev_content.users", newPlBytes)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	evNew, err := gomatrixserverlib.MustGetRoomVersion(se.Version()).NewEventFromTrustedJSONWithEventID(se.EventID(), newEv, false)
+	if err != nil {
+		return nil, err
+	}
+
+	return evNew, err
+}

syncapi/synctypes/clientevent_test.go

@@ -18,12 +18,77 @@ package synctypes
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
+	"reflect"
 	"testing"
 
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/gomatrixserverlib/spec"
 )
 
+func queryUserIDForSender(senderID spec.SenderID) (*spec.UserID, error) {
+	if senderID == "" {
+		return nil, nil
+	}
+
+	return spec.NewUserID(string(senderID), true)
+}
+
+const testSenderID = "testSenderID"
+const testUserID = "@test:localhost"
+
+type EventFieldsToVerify struct {
+	EventID        string
+	Type           string
+	OriginServerTS spec.Timestamp
+	StateKey       *string
+	Content        spec.RawJSON
+	Unsigned       spec.RawJSON
+	Sender         string
+	Depth          int64
+	PrevEvents     []string
+	AuthEvents     []string
+}
+
+func verifyEventFields(t *testing.T, got EventFieldsToVerify, want EventFieldsToVerify) {
+	if got.EventID != want.EventID {
+		t.Errorf("ClientEvent.EventID: wanted %s, got %s", want.EventID, got.EventID)
+	}
+	if got.OriginServerTS != want.OriginServerTS {
+		t.Errorf("ClientEvent.OriginServerTS: wanted %d, got %d", want.OriginServerTS, got.OriginServerTS)
+	}
+	if got.StateKey == nil && want.StateKey != nil {
+		t.Errorf("ClientEvent.StateKey: no state key present when one was wanted: %s", *want.StateKey)
+	}
+	if got.StateKey != nil && want.StateKey == nil {
+		t.Errorf("ClientEvent.StateKey: state key present when one was not wanted: %s", *got.StateKey)
+	}
+	if got.StateKey != nil && want.StateKey != nil && *got.StateKey != *want.StateKey {
+		t.Errorf("ClientEvent.StateKey: wanted %s, got %s", *want.StateKey, *got.StateKey)
+	}
+	if got.Type != want.Type {
+		t.Errorf("ClientEvent.Type: wanted %s, got %s", want.Type, got.Type)
+	}
+	if !bytes.Equal(got.Content, want.Content) {
+		t.Errorf("ClientEvent.Content: wanted %s, got %s", string(want.Content), string(got.Content))
+	}
+	if !bytes.Equal(got.Unsigned, want.Unsigned) {
+		t.Errorf("ClientEvent.Unsigned: wanted %s, got %s", string(want.Unsigned), string(got.Unsigned))
+	}
+	if got.Sender != want.Sender {
+		t.Errorf("ClientEvent.Sender: wanted %s, got %s", want.Sender, got.Sender)
+	}
+	if got.Depth != want.Depth {
+		t.Errorf("ClientEvent.Depth: wanted %d, got %d", want.Depth, got.Depth)
+	}
+	if !reflect.DeepEqual(got.PrevEvents, want.PrevEvents) {
+		t.Errorf("ClientEvent.PrevEvents: wanted %v, got %v", want.PrevEvents, got.PrevEvents)
+	}
+	if !reflect.DeepEqual(got.AuthEvents, want.AuthEvents) {
+		t.Errorf("ClientEvent.AuthEvents: wanted %v, got %v", want.AuthEvents, got.AuthEvents)
+	}
+}
+
 func TestToClientEvent(t *testing.T) { // nolint: gocyclo
 	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionV1).NewEventFromTrustedJSON([]byte(`{
 		"type": "m.room.name",
@@ -49,28 +114,33 @@ func TestToClientEvent(t *testing.T) { // nolint: gocyclo
 		t.Fatalf("failed to create userID: %s", err)
 	}
 	sk := ""
-	ce := ToClientEvent(ev, FormatAll, *userID, &sk)
+	ce, err := ToClientEvent(ev, FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-	if ce.EventID != ev.EventID() {
+		return queryUserIDForSender(senderID)
-		t.Errorf("ClientEvent.EventID: wanted %s, got %s", ev.EventID(), ce.EventID)
+	})
-	}
+	if err != nil {
-	if ce.OriginServerTS != ev.OriginServerTS() {
+		t.Fatalf("failed to create ClientEvent: %s", err)
-		t.Errorf("ClientEvent.OriginServerTS: wanted %d, got %d", ev.OriginServerTS(), ce.OriginServerTS)
-	}
-	if ce.StateKey == nil || *ce.StateKey != "" {
-		t.Errorf("ClientEvent.StateKey: wanted '', got %v", ce.StateKey)
-	}
-	if ce.Type != ev.Type() {
-		t.Errorf("ClientEvent.Type: wanted %s, got %s", ev.Type(), ce.Type)
-	}
-	if !bytes.Equal(ce.Content, ev.Content()) {
-		t.Errorf("ClientEvent.Content: wanted %s, got %s", string(ev.Content()), string(ce.Content))
-	}
-	if !bytes.Equal(ce.Unsigned, ev.Unsigned()) {
-		t.Errorf("ClientEvent.Unsigned: wanted %s, got %s", string(ev.Unsigned()), string(ce.Unsigned))
-	}
-	if ce.Sender != userID.String() {
-		t.Errorf("ClientEvent.Sender: wanted %s, got %s", userID.String(), ce.Sender)
 	}
+
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce.EventID,
+			Type:           ce.Type,
+			OriginServerTS: ce.OriginServerTS,
+			StateKey:       ce.StateKey,
+			Content:        ce.Content,
+			Unsigned:       ce.Unsigned,
+			Sender:         ce.Sender,
+		},
+		EventFieldsToVerify{
+			EventID:        ev.EventID(),
+			Type:           ev.Type(),
+			OriginServerTS: ev.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev.Content(),
+			Unsigned:       ev.Unsigned(),
+			Sender:         userID.String(),
+		})
+
 	j, err := json.Marshal(ce)
 	if err != nil {
 		t.Fatalf("failed to Marshal ClientEvent: %s", err)
@@ -104,13 +174,388 @@ func TestToClientFormatSync(t *testing.T) {
 	if err != nil {
 		t.Fatalf("failed to create Event: %s", err)
 	}
+	ce, err := ToClientEvent(ev, FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		return queryUserIDForSender(senderID)
+	})
+	if err != nil {
+		t.Fatalf("failed to create ClientEvent: %s", err)
+	}
+	if ce.RoomID != "" {
+		t.Errorf("ClientEvent.RoomID: wanted '', got %s", ce.RoomID)
+	}
+}
+
+func TestToClientEventFormatSyncFederation(t *testing.T) { // nolint: gocyclo
+	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionV10).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+		"state_key": "",
+		"event_id": "$test:localhost",
+		"room_id": "!test:localhost",
+		"sender": "@test:localhost",
+		"content": {
+			"name": "Hello World"
+		},
+		"origin_server_ts": 123456,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World"
+			}
+		},
+        "depth": 8,
+        "prev_events": [
+          "$f597Tp0Mm1PPxEgiprzJc2cZAjVhxCxACOGuwJb33Oo"
+        ],
+        "auth_events": [
+          "$Bj0ZGgX6VTqAQdqKH4ZG3l6rlbxY3rZlC5D3MeuK1OQ",
+          "$QsMs6A1PUVUhgSvmHBfpqEYJPgv4DXt96r8P2AK7iXQ",
+          "$tBteKtlnFiwlmPJsv0wkKTMEuUVWpQH89H7Xskxve1Q"
+        ]
+	}`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
 	userID, err := spec.NewUserID("@test:localhost", true)
 	if err != nil {
 		t.Fatalf("failed to create userID: %s", err)
 	}
 	sk := ""
-	ce := ToClientEvent(ev, FormatSync, *userID, &sk)
+	ce, err := ToClientEvent(ev, FormatSyncFederation, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-	if ce.RoomID != "" {
+		return queryUserIDForSender(senderID)
-		t.Errorf("ClientEvent.RoomID: wanted '', got %s", ce.RoomID)
+	})
+	if err != nil {
+		t.Fatalf("failed to create ClientEvent: %s", err)
+	}
+
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce.EventID,
+			Type:           ce.Type,
+			OriginServerTS: ce.OriginServerTS,
+			StateKey:       ce.StateKey,
+			Content:        ce.Content,
+			Unsigned:       ce.Unsigned,
+			Sender:         ce.Sender,
+			Depth:          ce.Depth,
+			PrevEvents:     ce.PrevEvents,
+			AuthEvents:     ce.AuthEvents,
+		},
+		EventFieldsToVerify{
+			EventID:        ev.EventID(),
+			Type:           ev.Type(),
+			OriginServerTS: ev.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev.Content(),
+			Unsigned:       ev.Unsigned(),
+			Sender:         userID.String(),
+			Depth:          ev.Depth(),
+			PrevEvents:     ev.PrevEventIDs(),
+			AuthEvents:     ev.AuthEventIDs(),
+		})
+}
+
+func userIDForSender(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+	if senderID == "unknownSenderID" {
+		return nil, fmt.Errorf("Cannot find userID")
+	}
+	return spec.NewUserID(testUserID, true)
+}
+
+func TestToClientEventsFormatSyncFederation(t *testing.T) { // nolint: gocyclo
+	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World"
+		},
+		"origin_server_ts": 123456,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World"
+			}
+		},
+        "depth": 8,
+        "prev_events": [
+          "$f597Tp0Mm1PPxEgiprzJc2cZAjVhxCxACOGuwJb33Oo"
+        ],
+        "auth_events": [
+          "$Bj0ZGgX6VTqAQdqKH4ZG3l6rlbxY3rZlC5D3MeuK1OQ",
+          "$QsMs6A1PUVUhgSvmHBfpqEYJPgv4DXt96r8P2AK7iXQ",
+          "$tBteKtlnFiwlmPJsv0wkKTMEuUVWpQH89H7Xskxve1Q"
+        ]
+	}`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+	ev2, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test2:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World 2"
+		},
+		"origin_server_ts": 1234567,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World 2"
+			},
+            "prev_sender": "testSenderID"
+		},
+        "depth": 9,
+        "prev_events": [
+          "$f597Tp0Mm1PPxEgiprzJc2cZAjVhxCxACOGuwJb33Oo"
+        ],
+        "auth_events": [
+          "$Bj0ZGgX6VTqAQdqKH4ZG3l6rlbxY3rZlC5D3MeuK1OQ",
+          "$QsMs6A1PUVUhgSvmHBfpqEYJPgv4DXt96r8P2AK7iXQ",
+          "$tBteKtlnFiwlmPJsv0wkKTMEuUVWpQH89H7Xskxve1Q"
+        ]
+    }`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+
+	clientEvents := ToClientEvents([]gomatrixserverlib.PDU{ev, ev2}, FormatSyncFederation, userIDForSender)
+	ce := clientEvents[0]
+	sk := testSenderID
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce.EventID,
+			Type:           ce.Type,
+			OriginServerTS: ce.OriginServerTS,
+			StateKey:       ce.StateKey,
+			Content:        ce.Content,
+			Unsigned:       ce.Unsigned,
+			Sender:         ce.Sender,
+			Depth:          ce.Depth,
+			PrevEvents:     ce.PrevEvents,
+			AuthEvents:     ce.AuthEvents,
+		},
+		EventFieldsToVerify{
+			EventID:        ev.EventID(),
+			Type:           ev.Type(),
+			OriginServerTS: ev.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev.Content(),
+			Unsigned:       ev.Unsigned(),
+			Sender:         testSenderID,
+			Depth:          ev.Depth(),
+			PrevEvents:     ev.PrevEventIDs(),
+			AuthEvents:     ev.AuthEventIDs(),
+		})
+
+	ce2 := clientEvents[1]
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce2.EventID,
+			Type:           ce2.Type,
+			OriginServerTS: ce2.OriginServerTS,
+			StateKey:       ce2.StateKey,
+			Content:        ce2.Content,
+			Unsigned:       ce2.Unsigned,
+			Sender:         ce2.Sender,
+			Depth:          ce2.Depth,
+			PrevEvents:     ce2.PrevEvents,
+			AuthEvents:     ce2.AuthEvents,
+		},
+		EventFieldsToVerify{
+			EventID:        ev2.EventID(),
+			Type:           ev2.Type(),
+			OriginServerTS: ev2.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev2.Content(),
+			Unsigned:       ev2.Unsigned(),
+			Sender:         testSenderID,
+			Depth:          ev2.Depth(),
+			PrevEvents:     ev2.PrevEventIDs(),
+			AuthEvents:     ev2.AuthEventIDs(),
+		})
+}
+
+func TestToClientEventsFormatSync(t *testing.T) { // nolint: gocyclo
+	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World"
+		},
+		"origin_server_ts": 123456,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World"
 			}
 		}
+    }`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+	ev2, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test2:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World 2"
+		},
+		"origin_server_ts": 1234567,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World 2"
+			},
+            "prev_sender": "testSenderID"
+		},
+        "depth": 9	
+    }`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+
+	clientEvents := ToClientEvents([]gomatrixserverlib.PDU{ev, ev2}, FormatSync, userIDForSender)
+	ce := clientEvents[0]
+	sk := testUserID
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce.EventID,
+			Type:           ce.Type,
+			OriginServerTS: ce.OriginServerTS,
+			StateKey:       ce.StateKey,
+			Content:        ce.Content,
+			Unsigned:       ce.Unsigned,
+			Sender:         ce.Sender,
+		},
+		EventFieldsToVerify{
+			EventID:        ev.EventID(),
+			Type:           ev.Type(),
+			OriginServerTS: ev.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev.Content(),
+			Unsigned:       ev.Unsigned(),
+			Sender:         testUserID,
+		})
+
+	var prev PrevEventRef
+	prev.PrevContent = []byte(`{"name": "Goodbye World 2"}`)
+	prev.PrevSenderID = testUserID
+	expectedUnsigned, _ := json.Marshal(prev)
+
+	ce2 := clientEvents[1]
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce2.EventID,
+			Type:           ce2.Type,
+			OriginServerTS: ce2.OriginServerTS,
+			StateKey:       ce2.StateKey,
+			Content:        ce2.Content,
+			Unsigned:       ce2.Unsigned,
+			Sender:         ce2.Sender,
+		},
+		EventFieldsToVerify{
+			EventID:        ev2.EventID(),
+			Type:           ev2.Type(),
+			OriginServerTS: ev2.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev2.Content(),
+			Unsigned:       expectedUnsigned,
+			Sender:         testUserID,
+		})
+}
+
+func TestToClientEventsFormatSyncUnknownPrevSender(t *testing.T) { // nolint: gocyclo
+	ev, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World"
+		},
+		"origin_server_ts": 123456,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World"
+			}
+		}
+    }`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+	ev2, err := gomatrixserverlib.MustGetRoomVersion(gomatrixserverlib.RoomVersionPseudoIDs).NewEventFromTrustedJSON([]byte(`{
+		"type": "m.room.name",
+        "state_key": "testSenderID",
+		"event_id": "$test2:localhost",
+		"room_id": "!test:localhost",
+		"sender": "testSenderID",
+		"content": {
+			"name": "Hello World 2"
+		},
+		"origin_server_ts": 1234567,
+		"unsigned": {
+			"prev_content": {
+				"name": "Goodbye World 2"
+			},
+            "prev_sender": "unknownSenderID"
+		},
+        "depth": 9	
+    }`), false)
+	if err != nil {
+		t.Fatalf("failed to create Event: %s", err)
+	}
+
+	clientEvents := ToClientEvents([]gomatrixserverlib.PDU{ev, ev2}, FormatSync, userIDForSender)
+	ce := clientEvents[0]
+	sk := testUserID
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce.EventID,
+			Type:           ce.Type,
+			OriginServerTS: ce.OriginServerTS,
+			StateKey:       ce.StateKey,
+			Content:        ce.Content,
+			Unsigned:       ce.Unsigned,
+			Sender:         ce.Sender,
+		},
+		EventFieldsToVerify{
+			EventID:        ev.EventID(),
+			Type:           ev.Type(),
+			OriginServerTS: ev.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev.Content(),
+			Unsigned:       ev.Unsigned(),
+			Sender:         testUserID,
+		})
+
+	var prev PrevEventRef
+	prev.PrevContent = []byte(`{"name": "Goodbye World 2"}`)
+	prev.PrevSenderID = "unknownSenderID"
+	expectedUnsigned, _ := json.Marshal(prev)
+
+	ce2 := clientEvents[1]
+	verifyEventFields(t,
+		EventFieldsToVerify{
+			EventID:        ce2.EventID,
+			Type:           ce2.Type,
+			OriginServerTS: ce2.OriginServerTS,
+			StateKey:       ce2.StateKey,
+			Content:        ce2.Content,
+			Unsigned:       ce2.Unsigned,
+			Sender:         ce2.Sender,
+		},
+		EventFieldsToVerify{
+			EventID:        ev2.EventID(),
+			Type:           ev2.Type(),
+			OriginServerTS: ev2.OriginServerTS(),
+			StateKey:       &sk,
+			Content:        ev2.Content(),
+			Unsigned:       expectedUnsigned,
+			Sender:         testUserID,
+		})
+}

syncapi/synctypes/filter.go

@@ -78,9 +78,14 @@ type RoomEventFilter struct {
 	ContainsURL               *bool     `json:"contains_url,omitempty"`
 }
 
+const (
+	EventFormatClient     = "client"
+	EventFormatFederation = "federation"
+)
+
 // Validate checks if the filter contains valid property values
 func (filter *Filter) Validate() error {
-	if filter.EventFormat != "" && filter.EventFormat != "client" && filter.EventFormat != "federation" {
+	if filter.EventFormat != "" && filter.EventFormat != EventFormatClient && filter.EventFormat != EventFormatFederation {
 		return errors.New("Bad event_format value. Must be one of [\"client\", \"federation\"]")
 	}
 	return nil

syncapi/types/types.go

@@ -15,6 +15,7 @@
 package types
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -339,13 +340,6 @@ func NewStreamTokenFromString(tok string) (token StreamingToken, err error) {
 	return token, nil
 }
 
-// PrevEventRef represents a reference to a previous event in a state event upgrade
-type PrevEventRef struct {
-	PrevContent   json.RawMessage `json:"prev_content"`
-	ReplacesState string          `json:"replaces_state"`
-	PrevSenderID  string          `json:"prev_sender"`
-}
-
 type DeviceLists struct {
 	Changed []string `json:"changed,omitempty"`
 	Left    []string `json:"left,omitempty"`
@@ -539,7 +533,7 @@ type InviteResponse struct {
 }
 
 // NewInviteResponse creates an empty response with initialised arrays.
-func NewInviteResponse(event *types.HeaderedEvent, userID spec.UserID, stateKey *string) *InviteResponse {
+func NewInviteResponse(ctx context.Context, rsAPI api.QuerySenderIDAPI, event *types.HeaderedEvent, eventFormat synctypes.ClientEventFormat) (*InviteResponse, error) {
 	res := InviteResponse{}
 	res.InviteState.Events = []json.RawMessage{}
 
@@ -547,18 +541,42 @@ func NewInviteResponse(event *types.HeaderedEvent, userID spec.UserID, stateKey
 	// If there is then unmarshal it into the response. This will contain the
 	// partial room state such as join rules, room name etc.
 	if inviteRoomState := gjson.GetBytes(event.Unsigned(), "invite_room_state"); inviteRoomState.Exists() {
+		if event.Version() == gomatrixserverlib.RoomVersionPseudoIDs && eventFormat != synctypes.FormatSyncFederation {
+			updatedInvite, err := synctypes.GetUpdatedInviteRoomState(func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+				return rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
+			}, inviteRoomState, event.PDU, event.RoomID(), eventFormat)
+			if err != nil {
+				return nil, err
+			}
+			_ = json.Unmarshal(updatedInvite, &res.InviteState.Events)
+		} else {
 			_ = json.Unmarshal([]byte(inviteRoomState.Raw), &res.InviteState.Events)
 		}
+	}
+
+	// Clear unsigned so it doesn't have pseudoIDs converted during ToClientEvent
+	eventNoUnsigned, err := event.SetUnsigned(nil)
+	if err != nil {
+		return nil, err
+	}
 
 	// Then we'll see if we can create a partial of the invite event itself.
 	// This is needed for clients to work out *who* sent the invite.
-	inviteEvent := synctypes.ToClientEvent(event.PDU, synctypes.FormatSync, userID, stateKey)
+	inviteEvent, err := synctypes.ToClientEvent(eventNoUnsigned, eventFormat, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+		return rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Ensure unsigned field is empty so it isn't marshalled into the final JSON
 	inviteEvent.Unsigned = nil
-	if ev, err := json.Marshal(inviteEvent); err == nil {
+
+	if ev, err := json.Marshal(*inviteEvent); err == nil {
 		res.InviteState.Events = append(res.InviteState.Events, ev)
 	}
 
-	return &res
+	return &res, nil
 }
 
 // LeaveResponse represents a /sync response for a room which is under the 'leave' key.

syncapi/types/types_test.go

@@ -1,6 +1,7 @@
 package types
 
 import (
+	"context"
 	"encoding/json"
 	"reflect"
 	"testing"
@@ -11,8 +12,19 @@ import (
 	"github.com/matrix-org/gomatrixserverlib/spec"
 )
 
-func UserIDForSender(roomID string, senderID string) (*spec.UserID, error) {
+type FakeRoomserverAPI struct{}
-	return spec.NewUserID(senderID, true)
+
+func (f *FakeRoomserverAPI) QueryUserIDForSender(ctx context.Context, roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+	if senderID == "" {
+		return nil, nil
+	}
+
+	return spec.NewUserID(string(senderID), true)
+}
+
+func (f *FakeRoomserverAPI) QuerySenderIDForUser(ctx context.Context, roomID spec.RoomID, userID spec.UserID) (*spec.SenderID, error) {
+	sender := spec.SenderID(userID.String())
+	return &sender, nil
 }
 
 func TestSyncTokens(t *testing.T) {
@@ -61,25 +73,18 @@ func TestNewInviteResponse(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	sender, err := spec.NewUserID("@neilalexander:matrix.org", true)
+	rsAPI := FakeRoomserverAPI{}
+	res, err := NewInviteResponse(context.Background(), &rsAPI, &types.HeaderedEvent{PDU: ev}, synctypes.FormatSync)
 	if err != nil {
 		t.Fatal(err)
 	}
-	skUserID, err := spec.NewUserID("@neilalexander:dendrite.neilalexander.dev", true)
-	if err != nil {
-		t.Fatal(err)
-	}
-	skString := skUserID.String()
-	sk := &skString
-
-	res := NewInviteResponse(&types.HeaderedEvent{PDU: ev}, *sender, sk)
 	j, err := json.Marshal(res)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	if string(j) != expected {
-		t.Fatalf("Invite response didn't contain correct info")
+		t.Fatalf("Invite response didn't contain correct info, \nexpected: %s \ngot: %s", expected, string(j))
 	}
 }
 

sytest-whitelist

@@ -784,3 +784,15 @@ Invited user can reject local invite after originator leaves
 Guest users can join guest_access rooms
 Forgotten room messages cannot be paginated
 Local device key changes get to remote servers with correct prev_id
+HS provides query metadata
+HS can provide query metadata on a single protocol
+Invites over federation are correctly pushed
+Invites over federation are correctly pushed with name
+User can create and send/receive messages in a room with version 11
+local user can join room with version 11
+User can invite local user to room with version 11
+remote user can join room with version 11
+User can invite remote user to room with version 11
+Remote user can backfill in a room with version 11
+Can reject invites over federation for rooms with version 11
+Can receive redactions from regular users over federation in room version 11

userapi/consumers/roomserver.go

@@ -92,29 +92,42 @@ func (s *OutputRoomEventConsumer) Start() error {
 func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
 	msg := msgs[0] // Guaranteed to exist if onMessage is called
 	// Only handle events we care about
-	if rsapi.OutputType(msg.Header.Get(jetstream.RoomEventType)) != rsapi.OutputTypeNewRoomEvent {
+
-		return true
+	var event *rstypes.HeaderedEvent
-	}
+	var isNewRoomEvent bool
+	switch rsapi.OutputType(msg.Header.Get(jetstream.RoomEventType)) {
+	case rsapi.OutputTypeNewRoomEvent:
+		isNewRoomEvent = true
+		fallthrough
+	case rsapi.OutputTypeNewInviteEvent:
 		var output rsapi.OutputEvent
 		if err := json.Unmarshal(msg.Data, &output); err != nil {
 			// If the message was invalid, log it and move on to the next message in the stream
 			log.WithError(err).Errorf("roomserver output log: message parse failure")
 			return true
 		}
-	event := output.NewRoomEvent.Event
+		if isNewRoomEvent {
+			event = output.NewRoomEvent.Event
+		} else {
+			event = output.NewInviteEvent.Event
+		}
+
 		if event == nil {
 			log.Errorf("userapi consumer: expected event")
 			return true
 		}
 
-	if s.cfg.Matrix.ReportStats.Enabled {
-		go s.storeMessageStats(ctx, event.Type(), string(event.SenderID()), event.RoomID())
-	}
-
 		log.WithFields(log.Fields{
 			"event_id":   event.EventID(),
 			"event_type": event.Type(),
 		}).Tracef("Received message from roomserver: %#v", output)
+	default:
+		return true
+	}
+
+	if s.cfg.Matrix.ReportStats.Enabled {
+		go s.storeMessageStats(ctx, event.Type(), string(event.SenderID()), event.RoomID().String())
+	}
 
 	metadata, err := msg.Metadata()
 	if err != nil {
@@ -253,8 +266,8 @@ func (s *OutputRoomEventConsumer) updateMDirect(ctx context.Context, oldRoomID,
 	directChats := gjson.ParseBytes(directChatsRaw)
 	newDirectChats := make(map[string][]string)
 	// iterate over all userID -> roomIDs
-	directChats.ForEach(func(userID, roomIDs gjson.Result) bool {
 	var found bool
+	directChats.ForEach(func(userID, roomIDs gjson.Result) bool {
 		for _, roomID := range roomIDs.Array() {
 			newDirectChats[userID.Str] = append(newDirectChats[userID.Str], roomID.Str)
 			// add the new roomID to m.direct
@@ -263,22 +276,21 @@ func (s *OutputRoomEventConsumer) updateMDirect(ctx context.Context, oldRoomID,
 				newDirectChats[userID.Str] = append(newDirectChats[userID.Str], newRoomID)
 			}
 		}
+		return true
+	})
+
 	// Only hit the database if we found the old room as a DM for this user
 	if found {
 		var data []byte
 		data, err = json.Marshal(newDirectChats)
 		if err != nil {
-				return true
+			return err
 		}
 		if err = s.db.SaveAccountData(ctx, localpart, serverName, "", "m.direct", data); err != nil {
-				return true
+			return fmt.Errorf("failed to update m.direct state: %w", err)
 		}
 	}
-		return true
+
-	})
-	if err != nil {
-		return fmt.Errorf("failed to update m.direct state")
-	}
 	return nil
 }
 
@@ -294,36 +306,21 @@ func (s *OutputRoomEventConsumer) copyTags(ctx context.Context, oldRoomID, newRo
 }
 
 func (s *OutputRoomEventConsumer) processMessage(ctx context.Context, event *rstypes.HeaderedEvent, streamPos uint64) error {
-	members, roomSize, err := s.localRoomMembers(ctx, event.RoomID())
+	members, roomSize, err := s.localRoomMembers(ctx, event.RoomID().String())
 	if err != nil {
 		return fmt.Errorf("s.localRoomMembers: %w", err)
 	}
 
 	switch {
 	case event.Type() == spec.MRoomMember:
-		sender := spec.UserID{}
+		cevent, clientEvErr := synctypes.ToClientEvent(event, synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-		validRoomID, roomErr := spec.NewRoomID(event.RoomID())
+			return s.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
-		if roomErr != nil {
+		})
-			return roomErr
+		if clientEvErr != nil {
+			return clientEvErr
 		}
-		userID, queryErr := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
-		if queryErr == nil && userID != nil {
-			sender = *userID
-		}
-
-		sk := event.StateKey()
-		if sk != nil && *sk != "" {
-			skUserID, queryErr := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*sk))
-			if queryErr == nil && skUserID != nil {
-				skString := skUserID.String()
-				sk = &skString
-			} else {
-				return fmt.Errorf("queryUserIDForSender: userID unknown for %s", *sk)
-			}
-		}
-		cevent := synctypes.ToClientEvent(event, synctypes.FormatAll, sender, sk)
 		var member *localMembership
-		member, err = newLocalMembership(&cevent)
+		member, err = newLocalMembership(cevent)
 		if err != nil {
 			return fmt.Errorf("newLocalMembership: %w", err)
 		}
@@ -334,7 +331,7 @@ func (s *OutputRoomEventConsumer) processMessage(ctx context.Context, event *rst
 		}
 	case event.Type() == "m.room.tombstone" && event.StateKeyEquals(""):
 		// Handle room upgrades
-		oldRoomID := event.RoomID()
+		oldRoomID := event.RoomID().String()
 		newRoomID := gjson.GetBytes(event.Content(), "replacement_room").Str
 		if err = s.handleRoomUpgrade(ctx, oldRoomID, newRoomID, members, roomSize); err != nil {
 			// while inconvenient, this shouldn't stop us from sending push notifications
@@ -351,7 +348,7 @@ func (s *OutputRoomEventConsumer) processMessage(ctx context.Context, event *rst
 
 	log.WithFields(log.Fields{
 		"event_id":    event.EventID(),
-		"room_id":     event.RoomID(),
+		"room_id":     event.RoomID().String(),
 		"num_members": len(members),
 		"room_size":   roomSize,
 	}).Tracef("Notifying members")
@@ -463,8 +460,21 @@ func (s *OutputRoomEventConsumer) roomName(ctx context.Context, event *rstypes.H
 		}
 	}
 
+	// Special case for invites, as we don't store any "current state" for these events,
+	// we need to make sure that, if present, the m.room.name is sent as well.
+	if event.Type() == spec.MRoomMember &&
+		gjson.GetBytes(event.Content(), "membership").Str == "invite" {
+		invState := gjson.GetBytes(event.JSON(), "unsigned.invite_room_state")
+		for _, ev := range invState.Array() {
+			if ev.Get("type").Str == spec.MRoomName {
+				name := ev.Get("content.name").Str
+				return name, nil
+			}
+		}
+	}
+
 	req := &rsapi.QueryCurrentStateRequest{
-		RoomID:      event.RoomID(),
+		RoomID:      event.RoomID().String(),
 		StateTuples: []gomatrixserverlib.StateKeyTuple{roomNameTuple, canonicalAliasTuple},
 	}
 	var res rsapi.QueryCurrentStateResponse
@@ -532,7 +542,7 @@ func (s *OutputRoomEventConsumer) notifyLocal(ctx context.Context, event *rstype
 	if a != pushrules.NotifyAction && a != pushrules.CoalesceAction {
 		log.WithFields(log.Fields{
 			"event_id":  event.EventID(),
-			"room_id":   event.RoomID(),
+			"room_id":   event.RoomID().String(),
 			"localpart": mem.Localpart,
 		}).Tracef("Push rule evaluation rejected the event")
 		return nil
@@ -542,44 +552,32 @@ func (s *OutputRoomEventConsumer) notifyLocal(ctx context.Context, event *rstype
 	if err != nil {
 		return fmt.Errorf("s.localPushDevices: %w", err)
 	}
-
+	clientEvent, err := synctypes.ToClientEvent(event, synctypes.FormatSync, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
-	sender := spec.UserID{}
+		return s.rsAPI.QueryUserIDForSender(ctx, roomID, senderID)
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	})
 	if err != nil {
 		return err
 	}
-	userID, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
-	if err == nil && userID != nil {
-		sender = *userID
-	}
 
-	sk := event.StateKey()
-	if sk != nil && *sk != "" {
-		skUserID, queryErr := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, spec.SenderID(*event.StateKey()))
-		if queryErr == nil && skUserID != nil {
-			skString := skUserID.String()
-			sk = &skString
-		}
-	}
 	n := &api.Notification{
 		Actions: actions,
 		// UNSPEC: the spec doesn't say this is a ClientEvent, but the
 		// fields seem to match. room_id should be missing, which
 		// matches the behaviour of FormatSync.
-		Event: synctypes.ToClientEvent(event, synctypes.FormatSync, sender, sk),
+		Event: *clientEvent,
 		// TODO: this is per-device, but it's not part of the primary
 		// key. So inserting one notification per profile tag doesn't
 		// make sense. What is this supposed to be? Sytests require it
 		// to "work", but they only use a single device.
 		ProfileTag: profileTag,
-		RoomID:     event.RoomID(),
+		RoomID:     event.RoomID().String(),
 		TS:         spec.AsTimestamp(time.Now()),
 	}
 	if err = s.db.InsertNotification(ctx, mem.Localpart, mem.Domain, event.EventID(), streamPos, tweaks, n); err != nil {
 		return fmt.Errorf("s.db.InsertNotification: %w", err)
 	}
 
-	if err = s.syncProducer.GetAndSendNotificationData(ctx, mem.UserID, event.RoomID()); err != nil {
+	if err = s.syncProducer.GetAndSendNotificationData(ctx, mem.UserID, event.RoomID().String()); err != nil {
 		return fmt.Errorf("s.syncProducer.GetAndSendNotificationData: %w", err)
 	}
 
@@ -591,7 +589,7 @@ func (s *OutputRoomEventConsumer) notifyLocal(ctx context.Context, event *rstype
 
 	log.WithFields(log.Fields{
 		"event_id":   event.EventID(),
-		"room_id":    event.RoomID(),
+		"room_id":    event.RoomID().String(),
 		"localpart":  mem.Localpart,
 		"num_urls":   len(devicesByURLAndFormat),
 		"num_unread": userNumUnreadNotifs,
@@ -648,11 +646,7 @@ func (s *OutputRoomEventConsumer) notifyLocal(ctx context.Context, event *rstype
 // user. Returns actions (including dont_notify).
 func (s *OutputRoomEventConsumer) evaluatePushRules(ctx context.Context, event *rstypes.HeaderedEvent, mem *localMembership, roomSize int) ([]*pushrules.Action, error) {
 	user := ""
-	validRoomID, err := spec.NewRoomID(event.RoomID())
+	sender, err := s.rsAPI.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID())
-	if err != nil {
-		return nil, err
-	}
-	sender, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
 	if err == nil {
 		user = sender.String()
 	}
@@ -686,7 +680,7 @@ func (s *OutputRoomEventConsumer) evaluatePushRules(ctx context.Context, event *
 		ctx:      ctx,
 		rsAPI:    s.rsAPI,
 		mem:      mem,
-		roomID:   event.RoomID(),
+		roomID:   event.RoomID().String(),
 		roomSize: roomSize,
 	}
 	eval := pushrules.NewRuleSetEvaluator(ec, &ruleSets.Global)
@@ -704,7 +698,7 @@ func (s *OutputRoomEventConsumer) evaluatePushRules(ctx context.Context, event *
 
 	log.WithFields(log.Fields{
 		"event_id":  event.EventID(),
-		"room_id":   event.RoomID(),
+		"room_id":   event.RoomID().String(),
 		"localpart": mem.Localpart,
 		"rule_id":   rule.RuleID,
 	}).Trace("Matched a push rule")
@@ -793,16 +787,12 @@ func (s *OutputRoomEventConsumer) notifyHTTP(ctx context.Context, event *rstypes
 				},
 				Devices: devices,
 				EventID: event.EventID(),
-				RoomID:  event.RoomID(),
+				RoomID:  event.RoomID().String(),
 			},
 		}
 
 	default:
-		validRoomID, err := spec.NewRoomID(event.RoomID())
+		sender, err := s.rsAPI.QueryUserIDForSender(ctx, event.RoomID(), event.SenderID())
-		if err != nil {
-			return nil, err
-		}
-		sender, err := s.rsAPI.QueryUserIDForSender(ctx, *validRoomID, event.SenderID())
 		if err != nil {
 			logger.WithError(err).Errorf("Failed to get userID for sender %s", event.SenderID())
 			return nil, err
@@ -816,7 +806,7 @@ func (s *OutputRoomEventConsumer) notifyHTTP(ctx context.Context, event *rstypes
 				Devices:  devices,
 				EventID:  event.EventID(),
 				ID:       event.EventID(),
-				RoomID:   event.RoomID(),
+				RoomID:   event.RoomID().String(),
 				RoomName: roomName,
 				Sender:   sender.String(),
 				Type:     event.Type(),
@@ -830,19 +820,13 @@ func (s *OutputRoomEventConsumer) notifyHTTP(ctx context.Context, event *rstypes
 			logger.WithError(err).Errorf("Failed to convert local user to userID %s", localpart)
 			return nil, err
 		}
-		roomID, err := spec.NewRoomID(event.RoomID())
+		localSender, err := s.rsAPI.QuerySenderIDForUser(ctx, event.RoomID(), *userID)
 		if err != nil {
-			logger.WithError(err).Errorf("event roomID is invalid %s", event.RoomID())
+			logger.WithError(err).Errorf("Failed to get local user senderID for room %s: %s", userID.String(), event.RoomID().String())
-			return nil, err
-		}
-
-		localSender, err := s.rsAPI.QuerySenderIDForUser(ctx, *roomID, *userID)
-		if err != nil {
-			logger.WithError(err).Errorf("Failed to get local user senderID for room %s: %s", userID.String(), event.RoomID())
 			return nil, err
 		} else if localSender == nil {
-			logger.WithError(err).Errorf("Failed to get local user senderID for room %s: %s", userID.String(), event.RoomID())
+			logger.WithError(err).Errorf("Failed to get local user senderID for room %s: %s", userID.String(), event.RoomID().String())
-			return nil, fmt.Errorf("no sender ID for user %s in %s", userID.String(), roomID.String())
+			return nil, fmt.Errorf("no sender ID for user %s in %s", userID.String(), event.RoomID().String())
 		}
 		if event.StateKey() != nil && *event.StateKey() == string(*localSender) {
 			req.Notification.UserIsTarget = true

userapi/internal/user_api.go

@@ -563,6 +563,7 @@ func (a *UserInternalAPI) QueryAccountData(ctx context.Context, req *api.QueryAc
 func (a *UserInternalAPI) QueryAccessToken(ctx context.Context, req *api.QueryAccessTokenRequest, res *api.QueryAccessTokenResponse) error {
 	if req.AppServiceUserID != "" {
 		appServiceDevice, err := a.queryAppServiceToken(ctx, req.AccessToken, req.AppServiceUserID)
+		if err != nil || appServiceDevice != nil {
 			if err != nil {
 				res.Err = err.Error()
 			}
@@ -570,6 +571,8 @@ func (a *UserInternalAPI) QueryAccessToken(ctx context.Context, req *api.QueryAc
 
 			return nil
 		}
+		// If the provided token wasn't an as_token (both err and appServiceDevice are nil), continue with normal auth.
+	}
 	device, err := a.DB.GetDeviceByAccessToken(ctx, req.AccessToken)
 	if err != nil {
 		if err == sql.ErrNoRows {

userapi/util/notify_test.go

@@ -23,6 +23,14 @@ import (
 	userUtil "github.com/matrix-org/dendrite/userapi/util"
 )
 
+func queryUserIDForSender(senderID spec.SenderID) (*spec.UserID, error) {
+	if senderID == "" {
+		return nil, nil
+	}
+
+	return spec.NewUserID(string(senderID), true)
+}
+
 func TestNotifyUserCountsAsync(t *testing.T) {
 	alice := test.NewUser(t)
 	aliceLocalpart, serverName, err := gomatrixserverlib.SplitID('@', alice.ID)
@@ -100,13 +108,14 @@ func TestNotifyUserCountsAsync(t *testing.T) {
 		}
 
 		// Insert a dummy event
-		sender, err := spec.NewUserID(alice.ID, true)
+		ev, err := synctypes.ToClientEvent(dummyEvent, synctypes.FormatAll, func(roomID spec.RoomID, senderID spec.SenderID) (*spec.UserID, error) {
+			return queryUserIDForSender(senderID)
+		})
 		if err != nil {
 			t.Error(err)
 		}
-		sk := ""
 		if err := db.InsertNotification(ctx, aliceLocalpart, serverName, dummyEvent.EventID(), 0, nil, &api.Notification{
-			Event: synctypes.ToClientEvent(dummyEvent, synctypes.FormatAll, *sender, &sk),
+			Event: *ev,
 		}); err != nil {
 			t.Error(err)
 		}