Merge branch 'matrix-org:main' into main

build/docker/Dockerfile.monolith

@@ -1,4 +1,4 @@
-FROM docker.io/golang:1.17-alpine AS base
+FROM docker.io/golang:1.18-alpine AS base
 
 RUN apk --update --no-cache add bash build-base
 
@@ -23,4 +23,4 @@ COPY --from=base /build/bin/* /usr/bin/
 VOLUME /etc/dendrite
 WORKDIR /etc/dendrite
 
-ENTRYPOINT ["/usr/bin/dendrite-monolith-server"]
+ENTRYPOINT ["/usr/bin/dendrite-monolith-server"]

build/docker/Dockerfile.polylith

@@ -1,4 +1,4 @@
-FROM docker.io/golang:1.17-alpine AS base
+FROM docker.io/golang:1.18-alpine AS base
 
 RUN apk --update --no-cache add bash build-base
 
@@ -23,4 +23,4 @@ COPY --from=base /build/bin/* /usr/bin/
 VOLUME /etc/dendrite
 WORKDIR /etc/dendrite
 
-ENTRYPOINT ["/usr/bin/dendrite-polylith-multi"]
+ENTRYPOINT ["/usr/bin/dendrite-polylith-multi"]

build/gobind-pinecone/monolith.go

@@ -314,6 +314,7 @@ func (m *DendriteMonolith) Start() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 
 	httpRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()

build/gobind-yggdrasil/monolith.go

@@ -152,6 +152,7 @@ func (m *DendriteMonolith) Start() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 
 	httpRouter := mux.NewRouter()

clientapi/clientapi.go

@@ -36,6 +36,7 @@ func AddPublicRoutes(
 	process *process.ProcessContext,
 	router *mux.Router,
 	synapseAdminRouter *mux.Router,
+	dendriteAdminRouter *mux.Router,
 	cfg *config.ClientAPI,
 	federation *gomatrixserverlib.FederationClient,
 	rsAPI roomserverAPI.RoomserverInternalAPI,
@@ -62,7 +63,8 @@ func AddPublicRoutes(
 	}
 
 	routing.Setup(
-		router, synapseAdminRouter, cfg, rsAPI, asAPI,
+		router, synapseAdminRouter, dendriteAdminRouter,
+		cfg, rsAPI, asAPI,
 		userAPI, userDirectoryProvider, federation,
 		syncProducer, transactionsCache, fsAPI, keyAPI,
 		extRoomsProvider, mscCfg, natsClient,

clientapi/routing/routing.go

@@ -48,7 +48,8 @@ import (
 // applied:
 // nolint: gocyclo
 func Setup(
-	publicAPIMux, synapseAdminRouter *mux.Router, cfg *config.ClientAPI,
+	publicAPIMux, synapseAdminRouter, dendriteAdminRouter *mux.Router,
+	cfg *config.ClientAPI,
 	rsAPI roomserverAPI.RoomserverInternalAPI,
 	asAPI appserviceAPI.AppServiceQueryAPI,
 	userAPI userapi.UserInternalAPI,
@@ -119,6 +120,45 @@ func Setup(
 		).Methods(http.MethodGet, http.MethodPost, http.MethodOptions)
 	}
 
+	dendriteAdminRouter.Handle("/admin/evacuateRoom/{roomID}",
+		httputil.MakeAuthAPI("admin_evacuate_room", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
+			if device.AccountType != userapi.AccountTypeAdmin {
+				return util.JSONResponse{
+					Code: http.StatusForbidden,
+					JSON: jsonerror.Forbidden("This API can only be used by admin users."),
+				}
+			}
+			vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
+			if err != nil {
+				return util.ErrorResponse(err)
+			}
+			roomID, ok := vars["roomID"]
+			if !ok {
+				return util.JSONResponse{
+					Code: http.StatusBadRequest,
+					JSON: jsonerror.MissingArgument("Expecting room ID."),
+				}
+			}
+			res := &roomserverAPI.PerformAdminEvacuateRoomResponse{}
+			rsAPI.PerformAdminEvacuateRoom(
+				req.Context(),
+				&roomserverAPI.PerformAdminEvacuateRoomRequest{
+					RoomID: roomID,
+				},
+				res,
+			)
+			if err := res.Error; err != nil {
+				return err.JSONResponse()
+			}
+			return util.JSONResponse{
+				Code: 200,
+				JSON: map[string]interface{}{
+					"affected": res.Affected,
+				},
+			}
+		}),
+	).Methods(http.MethodGet, http.MethodOptions)
+
 	// server notifications
 	if cfg.Matrix.ServerNotices.Enabled {
 		logrus.Info("Enabling server notices at /_synapse/admin/v1/send_server_notice")

cmd/dendrite-demo-pinecone/main.go

@@ -193,6 +193,7 @@ func main() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 
 	wsUpgrader := websocket.Upgrader{

cmd/dendrite-demo-yggdrasil/main.go

@@ -150,6 +150,7 @@ func main() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 	if err := mscs.Enable(base, &monolith); err != nil {
 		logrus.WithError(err).Fatalf("Failed to enable MSCs")

cmd/dendrite-monolith-server/main.go

@@ -153,6 +153,7 @@ func main() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 
 	if len(base.Cfg.MSCs.MSCs) > 0 {

cmd/dendrite-polylith-multi/personalities/clientapi.go

@@ -31,8 +31,10 @@ func ClientAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
 	keyAPI := base.KeyServerHTTPClient()
 
 	clientapi.AddPublicRoutes(
-		base.ProcessContext, base.PublicClientAPIMux, base.SynapseAdminMux, &base.Cfg.ClientAPI,
+		base.ProcessContext, base.PublicClientAPIMux,
-		federation, rsAPI, asQuery, transactions.New(), fsAPI, userAPI, userAPI,
+		base.SynapseAdminMux, base.DendriteAdminMux,
+		&base.Cfg.ClientAPI, federation, rsAPI, asQuery,
+		transactions.New(), fsAPI, userAPI, userAPI,
 		keyAPI, nil, &cfg.MSCs,
 	)
 

cmd/dendritejs-pinecone/main.go

@@ -220,6 +220,7 @@ func startup() {
 		base.PublicWellKnownAPIMux,
 		base.PublicMediaAPIMux,
 		base.SynapseAdminMux,
+		base.DendriteAdminMux,
 	)
 
 	httpRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()

federationapi/routing/backfill.go

@@ -51,6 +51,12 @@ func Backfill(
 		}
 	}
 
+	// If we don't think we belong to this room then don't waste the effort
+	// responding to expensive requests for it.
+	if err := ErrorIfLocalServerNotInRoom(httpReq.Context(), rsAPI, roomID); err != nil {
+		return *err
+	}
+
 	// Check if all of the required parameters are there.
 	eIDs, exists = httpReq.URL.Query()["v"]
 	if !exists {

federationapi/routing/eventauth.go

@@ -30,6 +30,12 @@ func GetEventAuth(
 	roomID string,
 	eventID string,
 ) util.JSONResponse {
+	// If we don't think we belong to this room then don't waste the effort
+	// responding to expensive requests for it.
+	if err := ErrorIfLocalServerNotInRoom(ctx, rsAPI, roomID); err != nil {
+		return *err
+	}
+
 	event, resErr := fetchEvent(ctx, rsAPI, eventID)
 	if resErr != nil {
 		return *resErr

federationapi/routing/missingevents.go

@@ -45,6 +45,12 @@ func GetMissingEvents(
 		}
 	}
 
+	// If we don't think we belong to this room then don't waste the effort
+	// responding to expensive requests for it.
+	if err := ErrorIfLocalServerNotInRoom(httpReq.Context(), rsAPI, roomID); err != nil {
+		return *err
+	}
+
 	var eventsResponse api.QueryMissingEventsResponse
 	if err := rsAPI.QueryMissingEvents(
 		httpReq.Context(), &api.QueryMissingEventsRequest{

federationapi/routing/routing.go

@@ -15,6 +15,8 @@
 package routing
 
 import (
+	"context"
+	"fmt"
 	"net/http"
 
 	"github.com/gorilla/mux"
@@ -24,6 +26,7 @@ import (
 	"github.com/matrix-org/dendrite/internal"
 	"github.com/matrix-org/dendrite/internal/httputil"
 	keyserverAPI "github.com/matrix-org/dendrite/keyserver/api"
+	"github.com/matrix-org/dendrite/roomserver/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/setup/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
@@ -491,3 +494,27 @@ func Setup(
 		}),
 	).Methods(http.MethodGet)
 }
+
+func ErrorIfLocalServerNotInRoom(
+	ctx context.Context,
+	rsAPI api.RoomserverInternalAPI,
+	roomID string,
+) *util.JSONResponse {
+	// Check if we think we're in this room. If we aren't then
+	// we won't waste CPU cycles serving this request.
+	joinedReq := &api.QueryServerJoinedToRoomRequest{
+		RoomID: roomID,
+	}
+	joinedRes := &api.QueryServerJoinedToRoomResponse{}
+	if err := rsAPI.QueryServerJoinedToRoom(ctx, joinedReq, joinedRes); err != nil {
+		res := util.ErrorResponse(err)
+		return &res
+	}
+	if !joinedRes.IsInRoom {
+		return &util.JSONResponse{
+			Code: http.StatusNotFound,
+			JSON: jsonerror.NotFound(fmt.Sprintf("This server is not joined to room %s", roomID)),
+		}
+	}
+	return nil
+}

federationapi/routing/state.go

@@ -101,6 +101,12 @@ func getState(
 	roomID string,
 	eventID string,
 ) (stateEvents, authEvents []*gomatrixserverlib.HeaderedEvent, errRes *util.JSONResponse) {
+	// If we don't think we belong to this room then don't waste the effort
+	// responding to expensive requests for it.
+	if err := ErrorIfLocalServerNotInRoom(ctx, rsAPI, roomID); err != nil {
+		return nil, nil, err
+	}
+
 	event, resErr := fetchEvent(ctx, rsAPI, eventID)
 	if resErr != nil {
 		return nil, nil, resErr

keyserver/internal/internal.go

@@ -319,6 +319,9 @@ func (a *KeyInternalAPI) QueryKeys(ctx context.Context, req *api.QueryKeysReques
 	// JSON, add the signatures and marshal it again, for some reason?
 
 	for targetUserID, masterKey := range res.MasterKeys {
+		if masterKey.Signatures == nil {
+			masterKey.Signatures = map[string]map[gomatrixserverlib.KeyID]gomatrixserverlib.Base64Bytes{}
+		}
 		for targetKeyID := range masterKey.Keys {
 			sigMap, err := a.DB.CrossSigningSigsForTarget(ctx, req.UserID, targetUserID, targetKeyID)
 			if err != nil {

roomserver/api/api.go

@@ -66,6 +66,12 @@ type RoomserverInternalAPI interface {
 		res *PerformInboundPeekResponse,
 	) error
 
+	PerformAdminEvacuateRoom(
+		ctx context.Context,
+		req *PerformAdminEvacuateRoomRequest,
+		res *PerformAdminEvacuateRoomResponse,
+	)
+
 	QueryPublishedRooms(
 		ctx context.Context,
 		req *QueryPublishedRoomsRequest,

roomserver/api/api_trace.go

@@ -104,6 +104,15 @@ func (t *RoomserverInternalAPITrace) PerformPublish(
 	util.GetLogger(ctx).Infof("PerformPublish req=%+v res=%+v", js(req), js(res))
 }
 
+func (t *RoomserverInternalAPITrace) PerformAdminEvacuateRoom(
+	ctx context.Context,
+	req *PerformAdminEvacuateRoomRequest,
+	res *PerformAdminEvacuateRoomResponse,
+) {
+	t.Impl.PerformAdminEvacuateRoom(ctx, req, res)
+	util.GetLogger(ctx).Infof("PerformAdminEvacuateRoom req=%+v res=%+v", js(req), js(res))
+}
+
 func (t *RoomserverInternalAPITrace) PerformInboundPeek(
 	ctx context.Context,
 	req *PerformInboundPeekRequest,

roomserver/api/perform.go

@@ -214,3 +214,12 @@ type PerformRoomUpgradeResponse struct {
 	NewRoomID string
 	Error     *PerformError
 }
+
+type PerformAdminEvacuateRoomRequest struct {
+	RoomID string `json:"room_id"`
+}
+
+type PerformAdminEvacuateRoomResponse struct {
+	Affected []string `json:"affected"`
+	Error    *PerformError
+}

roomserver/internal/api.go

@@ -35,6 +35,7 @@ type RoomserverInternalAPI struct {
 	*perform.Backfiller
 	*perform.Forgetter
 	*perform.Upgrader
+	*perform.Admin
 	ProcessContext         *process.ProcessContext
 	DB                     storage.Database
 	Cfg                    *config.RoomServer
@@ -164,6 +165,12 @@ func (r *RoomserverInternalAPI) SetFederationAPI(fsAPI fsAPI.FederationInternalA
 		Cfg:    r.Cfg,
 		URSAPI: r,
 	}
+	r.Admin = &perform.Admin{
+		DB:      r.DB,
+		Cfg:     r.Cfg,
+		Inputer: r.Inputer,
+		Queryer: r.Queryer,
+	}
 
 	if err := r.Inputer.Start(); err != nil {
 		logrus.WithError(err).Panic("failed to start roomserver input API")

roomserver/internal/perform/perform_admin.go

@@ -0,0 +1,162 @@
+// Copyright 2022 The Matrix.org Foundation C.I.C.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package perform
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/matrix-org/dendrite/internal/eventutil"
+	"github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/dendrite/roomserver/internal/input"
+	"github.com/matrix-org/dendrite/roomserver/internal/query"
+	"github.com/matrix-org/dendrite/roomserver/storage"
+	"github.com/matrix-org/dendrite/setup/config"
+	"github.com/matrix-org/gomatrixserverlib"
+)
+
+type Admin struct {
+	DB      storage.Database
+	Cfg     *config.RoomServer
+	Queryer *query.Queryer
+	Inputer *input.Inputer
+}
+
+// PerformEvacuateRoom will remove all local users from the given room.
+func (r *Admin) PerformAdminEvacuateRoom(
+	ctx context.Context,
+	req *api.PerformAdminEvacuateRoomRequest,
+	res *api.PerformAdminEvacuateRoomResponse,
+) {
+	roomInfo, err := r.DB.RoomInfo(ctx, req.RoomID)
+	if err != nil {
+		res.Error = &api.PerformError{
+			Code: api.PerformErrorBadRequest,
+			Msg:  fmt.Sprintf("r.DB.RoomInfo: %s", err),
+		}
+		return
+	}
+	if roomInfo == nil || roomInfo.IsStub {
+		res.Error = &api.PerformError{
+			Code: api.PerformErrorNoRoom,
+			Msg:  fmt.Sprintf("Room %s not found", req.RoomID),
+		}
+		return
+	}
+
+	memberNIDs, err := r.DB.GetMembershipEventNIDsForRoom(ctx, roomInfo.RoomNID, true, true)
+	if err != nil {
+		res.Error = &api.PerformError{
+			Code: api.PerformErrorBadRequest,
+			Msg:  fmt.Sprintf("r.DB.GetMembershipEventNIDsForRoom: %s", err),
+		}
+		return
+	}
+
+	memberEvents, err := r.DB.Events(ctx, memberNIDs)
+	if err != nil {
+		res.Error = &api.PerformError{
+			Code: api.PerformErrorBadRequest,
+			Msg:  fmt.Sprintf("r.DB.Events: %s", err),
+		}
+		return
+	}
+
+	inputEvents := make([]api.InputRoomEvent, 0, len(memberEvents))
+	res.Affected = make([]string, 0, len(memberEvents))
+	latestReq := &api.QueryLatestEventsAndStateRequest{
+		RoomID: req.RoomID,
+	}
+	latestRes := &api.QueryLatestEventsAndStateResponse{}
+	if err = r.Queryer.QueryLatestEventsAndState(ctx, latestReq, latestRes); err != nil {
+		res.Error = &api.PerformError{
+			Code: api.PerformErrorBadRequest,
+			Msg:  fmt.Sprintf("r.Queryer.QueryLatestEventsAndState: %s", err),
+		}
+		return
+	}
+
+	prevEvents := latestRes.LatestEvents
+	for _, memberEvent := range memberEvents {
+		if memberEvent.StateKey() == nil {
+			continue
+		}
+
+		var memberContent gomatrixserverlib.MemberContent
+		if err = json.Unmarshal(memberEvent.Content(), &memberContent); err != nil {
+			res.Error = &api.PerformError{
+				Code: api.PerformErrorBadRequest,
+				Msg:  fmt.Sprintf("json.Unmarshal: %s", err),
+			}
+			return
+		}
+		memberContent.Membership = gomatrixserverlib.Leave
+
+		stateKey := *memberEvent.StateKey()
+		fledglingEvent := &gomatrixserverlib.EventBuilder{
+			RoomID:     req.RoomID,
+			Type:       gomatrixserverlib.MRoomMember,
+			StateKey:   &stateKey,
+			Sender:     stateKey,
+			PrevEvents: prevEvents,
+		}
+
+		if fledglingEvent.Content, err = json.Marshal(memberContent); err != nil {
+			res.Error = &api.PerformError{
+				Code: api.PerformErrorBadRequest,
+				Msg:  fmt.Sprintf("json.Marshal: %s", err),
+			}
+			return
+		}
+
+		eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(fledglingEvent)
+		if err != nil {
+			res.Error = &api.PerformError{
+				Code: api.PerformErrorBadRequest,
+				Msg:  fmt.Sprintf("gomatrixserverlib.StateNeededForEventBuilder: %s", err),
+			}
+			return
+		}
+
+		event, err := eventutil.BuildEvent(ctx, fledglingEvent, r.Cfg.Matrix, time.Now(), &eventsNeeded, latestRes)
+		if err != nil {
+			res.Error = &api.PerformError{
+				Code: api.PerformErrorBadRequest,
+				Msg:  fmt.Sprintf("eventutil.BuildEvent: %s", err),
+			}
+			return
+		}
+
+		inputEvents = append(inputEvents, api.InputRoomEvent{
+			Kind:         api.KindNew,
+			Event:        event,
+			Origin:       r.Cfg.Matrix.ServerName,
+			SendAsServer: string(r.Cfg.Matrix.ServerName),
+		})
+		res.Affected = append(res.Affected, stateKey)
+		prevEvents = []gomatrixserverlib.EventReference{
+			event.EventReference(),
+		}
+	}
+
+	inputReq := &api.InputRoomEventsRequest{
+		InputRoomEvents: inputEvents,
+		Asynchronous:    true,
+	}
+	inputRes := &api.InputRoomEventsResponse{}
+	r.Inputer.InputRoomEvents(ctx, inputReq, inputRes)
+}

roomserver/inthttp/client.go

@@ -29,16 +29,17 @@ const (
 	RoomserverInputRoomEventsPath = "/roomserver/inputRoomEvents"
 
 	// Perform operations
-	RoomserverPerformInvitePath      = "/roomserver/performInvite"
+	RoomserverPerformInvitePath            = "/roomserver/performInvite"
-	RoomserverPerformPeekPath        = "/roomserver/performPeek"
+	RoomserverPerformPeekPath              = "/roomserver/performPeek"
-	RoomserverPerformUnpeekPath      = "/roomserver/performUnpeek"
+	RoomserverPerformUnpeekPath            = "/roomserver/performUnpeek"
-	RoomserverPerformRoomUpgradePath = "/roomserver/performRoomUpgrade"
+	RoomserverPerformRoomUpgradePath       = "/roomserver/performRoomUpgrade"
-	RoomserverPerformJoinPath        = "/roomserver/performJoin"
+	RoomserverPerformJoinPath              = "/roomserver/performJoin"
-	RoomserverPerformLeavePath       = "/roomserver/performLeave"
+	RoomserverPerformLeavePath             = "/roomserver/performLeave"
-	RoomserverPerformBackfillPath    = "/roomserver/performBackfill"
+	RoomserverPerformBackfillPath          = "/roomserver/performBackfill"
-	RoomserverPerformPublishPath     = "/roomserver/performPublish"
+	RoomserverPerformPublishPath           = "/roomserver/performPublish"
-	RoomserverPerformInboundPeekPath = "/roomserver/performInboundPeek"
+	RoomserverPerformInboundPeekPath       = "/roomserver/performInboundPeek"
-	RoomserverPerformForgetPath      = "/roomserver/performForget"
+	RoomserverPerformForgetPath            = "/roomserver/performForget"
+	RoomserverPerformAdminEvacuateRoomPath = "/roomserver/performAdminEvacuateRoom"
 
 	// Query operations
 	RoomserverQueryLatestEventsAndStatePath    = "/roomserver/queryLatestEventsAndState"
@@ -299,6 +300,23 @@ func (h *httpRoomserverInternalAPI) PerformPublish(
 	}
 }
 
+func (h *httpRoomserverInternalAPI) PerformAdminEvacuateRoom(
+	ctx context.Context,
+	req *api.PerformAdminEvacuateRoomRequest,
+	res *api.PerformAdminEvacuateRoomResponse,
+) {
+	span, ctx := opentracing.StartSpanFromContext(ctx, "PerformAdminEvacuateRoom")
+	defer span.Finish()
+
+	apiURL := h.roomserverURL + RoomserverPerformAdminEvacuateRoomPath
+	err := httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
+	if err != nil {
+		res.Error = &api.PerformError{
+			Msg: fmt.Sprintf("failed to communicate with roomserver: %s", err),
+		}
+	}
+}
+
 // QueryLatestEventsAndState implements RoomserverQueryAPI
 func (h *httpRoomserverInternalAPI) QueryLatestEventsAndState(
 	ctx context.Context,

roomserver/inthttp/server.go

@@ -118,6 +118,17 @@ func AddRoutes(r api.RoomserverInternalAPI, internalAPIMux *mux.Router) {
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
+	internalAPIMux.Handle(RoomserverPerformAdminEvacuateRoomPath,
+		httputil.MakeInternalAPI("performAdminEvacuateRoom", func(req *http.Request) util.JSONResponse {
+			var request api.PerformAdminEvacuateRoomRequest
+			var response api.PerformAdminEvacuateRoomResponse
+			if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
+				return util.MessageResponse(http.StatusBadRequest, err.Error())
+			}
+			r.PerformAdminEvacuateRoom(req.Context(), &request, &response)
+			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
+		}),
+	)
 	internalAPIMux.Handle(
 		RoomserverQueryPublishedRoomsPath,
 		httputil.MakeInternalAPI("queryPublishedRooms", func(req *http.Request) util.JSONResponse {

setup/monolith.go

@@ -54,13 +54,13 @@ type Monolith struct {
 }
 
 // AddAllPublicRoutes attaches all public paths to the given router
-func (m *Monolith) AddAllPublicRoutes(process *process.ProcessContext, csMux, ssMux, keyMux, wkMux, mediaMux, synapseMux *mux.Router) {
+func (m *Monolith) AddAllPublicRoutes(process *process.ProcessContext, csMux, ssMux, keyMux, wkMux, mediaMux, synapseMux, dendriteMux *mux.Router) {
 	userDirectoryProvider := m.ExtUserDirectoryProvider
 	if userDirectoryProvider == nil {
 		userDirectoryProvider = m.UserAPI
 	}
 	clientapi.AddPublicRoutes(
-		process, csMux, synapseMux, &m.Config.ClientAPI,
+		process, csMux, synapseMux, dendriteMux, &m.Config.ClientAPI,
 		m.FedClient, m.RoomserverAPI,
 		m.AppserviceAPI, transactions.New(),
 		m.FederationAPI, m.UserAPI, userDirectoryProvider, m.KeyAPI,

syncapi/notifier/notifier.go

@@ -333,6 +333,20 @@ func (n *Notifier) Load(ctx context.Context, db storage.Database) error {
 	return nil
 }
 
+// LoadRooms loads the membership states required to notify users correctly.
+func (n *Notifier) LoadRooms(ctx context.Context, db storage.Database, roomIDs []string) error {
+	n.lock.Lock()
+	defer n.lock.Unlock()
+
+	roomToUsers, err := db.AllJoinedUsersInRoom(ctx, roomIDs)
+	if err != nil {
+		return err
+	}
+	n.setUsersJoinedToRooms(roomToUsers)
+
+	return nil
+}
+
 // CurrentPosition returns the current sync position
 func (n *Notifier) CurrentPosition() types.StreamingToken {
 	n.lock.RLock()

syncapi/storage/interface.go

@@ -52,6 +52,9 @@ type Database interface {
 
 	// AllJoinedUsersInRooms returns a map of room ID to a list of all joined user IDs.
 	AllJoinedUsersInRooms(ctx context.Context) (map[string][]string, error)
+	// AllJoinedUsersInRoom returns a map of room ID to a list of all joined user IDs for a given room.
+	AllJoinedUsersInRoom(ctx context.Context, roomIDs []string) (map[string][]string, error)
+
 	// AllPeekingDevicesInRooms returns a map of room ID to a list of all peeking devices.
 	AllPeekingDevicesInRooms(ctx context.Context) (map[string][]types.PeekingDevice, error)
 	// Events lookups a list of event by their event ID.
@@ -159,6 +162,6 @@ type Database interface {
 type Presence interface {
 	UpdatePresence(ctx context.Context, userID string, presence types.Presence, statusMsg *string, lastActiveTS gomatrixserverlib.Timestamp, fromSync bool) (types.StreamPosition, error)
 	GetPresence(ctx context.Context, userID string) (*types.PresenceInternal, error)
-	PresenceAfter(ctx context.Context, after types.StreamPosition) (map[string]*types.PresenceInternal, error)
+	PresenceAfter(ctx context.Context, after types.StreamPosition, filter gomatrixserverlib.EventFilter) (map[string]*types.PresenceInternal, error)
 	MaxStreamPositionForPresence(ctx context.Context) (types.StreamPosition, error)
 }

syncapi/storage/postgres/current_room_state_table.go

@@ -93,6 +93,9 @@ const selectCurrentStateSQL = "" +
 const selectJoinedUsersSQL = "" +
 	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join'"
 
+const selectJoinedUsersInRoomSQL = "" +
+	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join' AND room_id = ANY($1)"
+
 const selectStateEventSQL = "" +
 	"SELECT headered_event_json FROM syncapi_current_room_state WHERE room_id = $1 AND type = $2 AND state_key = $3"
 
@@ -112,6 +115,7 @@ type currentRoomStateStatements struct {
 	selectRoomIDsWithAnyMembershipStmt *sql.Stmt
 	selectCurrentStateStmt             *sql.Stmt
 	selectJoinedUsersStmt              *sql.Stmt
+	selectJoinedUsersInRoomStmt        *sql.Stmt
 	selectEventsWithEventIDsStmt       *sql.Stmt
 	selectStateEventStmt               *sql.Stmt
 }
@@ -143,6 +147,9 @@ func NewPostgresCurrentRoomStateTable(db *sql.DB) (tables.CurrentRoomState, erro
 	if s.selectJoinedUsersStmt, err = db.Prepare(selectJoinedUsersSQL); err != nil {
 		return nil, err
 	}
+	if s.selectJoinedUsersInRoomStmt, err = db.Prepare(selectJoinedUsersInRoomSQL); err != nil {
+		return nil, err
+	}
 	if s.selectEventsWithEventIDsStmt, err = db.Prepare(selectEventsWithEventIDsSQL); err != nil {
 		return nil, err
 	}
@@ -163,9 +170,32 @@ func (s *currentRoomStateStatements) SelectJoinedUsers(
 	defer internal.CloseAndLogIfError(ctx, rows, "selectJoinedUsers: rows.close() failed")
 
 	result := make(map[string][]string)
+	var roomID string
+	var userID string
+	for rows.Next() {
+		if err := rows.Scan(&roomID, &userID); err != nil {
+			return nil, err
+		}
+		users := result[roomID]
+		users = append(users, userID)
+		result[roomID] = users
+	}
+	return result, rows.Err()
+}
+
+// SelectJoinedUsersInRoom returns a map of room ID to a list of joined user IDs for a given room.
+func (s *currentRoomStateStatements) SelectJoinedUsersInRoom(
+	ctx context.Context, roomIDs []string,
+) (map[string][]string, error) {
+	rows, err := s.selectJoinedUsersInRoomStmt.QueryContext(ctx, pq.StringArray(roomIDs))
+	if err != nil {
+		return nil, err
+	}
+	defer internal.CloseAndLogIfError(ctx, rows, "selectJoinedUsers: rows.close() failed")
+
+	result := make(map[string][]string)
+	var userID, roomID string
 	for rows.Next() {
-		var roomID string
-		var userID string
 		if err := rows.Scan(&roomID, &userID); err != nil {
 			return nil, err
 		}

syncapi/storage/postgres/memberships_table.go

@@ -64,7 +64,7 @@ const selectMembershipCountSQL = "" +
 	") t WHERE t.membership = $3"
 
 const selectHeroesSQL = "" +
-	"SELECT user_id FROM syncapi_memberships WHERE room_id = $1 AND user_id != $2 AND membership = ANY($3) LIMIT 5"
+	"SELECT DISTINCT user_id FROM syncapi_memberships WHERE room_id = $1 AND user_id != $2 AND membership = ANY($3) LIMIT 5"
 
 type membershipsStatements struct {
 	upsertMembershipStmt      *sql.Stmt

syncapi/storage/postgres/presence_table.go

@@ -17,6 +17,7 @@ package postgres
 import (
 	"context"
 	"database/sql"
+	"time"
 
 	"github.com/matrix-org/dendrite/internal"
 	"github.com/matrix-org/dendrite/internal/sqlutil"
@@ -72,7 +73,8 @@ const selectMaxPresenceSQL = "" +
 const selectPresenceAfter = "" +
 	" SELECT id, user_id, presence, status_msg, last_active_ts" +
 	" FROM syncapi_presence" +
-	" WHERE id > $1"
+	" WHERE id > $1 AND last_active_ts >= $2" +
+	" ORDER BY id ASC LIMIT $3"
 
 type presenceStatements struct {
 	upsertPresenceStmt         *sql.Stmt
@@ -144,11 +146,12 @@ func (p *presenceStatements) GetMaxPresenceID(ctx context.Context, txn *sql.Tx)
 func (p *presenceStatements) GetPresenceAfter(
 	ctx context.Context, txn *sql.Tx,
 	after types.StreamPosition,
+	filter gomatrixserverlib.EventFilter,
 ) (presences map[string]*types.PresenceInternal, err error) {
 	presences = make(map[string]*types.PresenceInternal)
 	stmt := sqlutil.TxStmt(txn, p.selectPresenceAfterStmt)
-
+	afterTS := gomatrixserverlib.AsTimestamp(time.Now().Add(time.Minute * -5))
-	rows, err := stmt.QueryContext(ctx, after)
+	rows, err := stmt.QueryContext(ctx, after, afterTS, filter.Limit)
 	if err != nil {
 		return nil, err
 	}

syncapi/storage/shared/syncserver.go

@@ -168,6 +168,10 @@ func (d *Database) AllJoinedUsersInRooms(ctx context.Context) (map[string][]stri
 	return d.CurrentRoomState.SelectJoinedUsers(ctx)
 }
 
+func (d *Database) AllJoinedUsersInRoom(ctx context.Context, roomIDs []string) (map[string][]string, error) {
+	return d.CurrentRoomState.SelectJoinedUsersInRoom(ctx, roomIDs)
+}
+
 func (d *Database) AllPeekingDevicesInRooms(ctx context.Context) (map[string][]types.PeekingDevice, error) {
 	return d.Peeks.SelectPeekingDevices(ctx)
 }
@@ -1056,8 +1060,8 @@ func (s *Database) GetPresence(ctx context.Context, userID string) (*types.Prese
 	return s.Presence.GetPresenceForUser(ctx, nil, userID)
 }
 
-func (s *Database) PresenceAfter(ctx context.Context, after types.StreamPosition) (map[string]*types.PresenceInternal, error) {
+func (s *Database) PresenceAfter(ctx context.Context, after types.StreamPosition, filter gomatrixserverlib.EventFilter) (map[string]*types.PresenceInternal, error) {
-	return s.Presence.GetPresenceAfter(ctx, nil, after)
+	return s.Presence.GetPresenceAfter(ctx, nil, after, filter)
 }
 
 func (s *Database) MaxStreamPositionForPresence(ctx context.Context) (types.StreamPosition, error) {

syncapi/storage/sqlite3/current_room_state_table.go

@@ -77,6 +77,9 @@ const selectCurrentStateSQL = "" +
 const selectJoinedUsersSQL = "" +
 	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join'"
 
+const selectJoinedUsersInRoomSQL = "" +
+	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join' AND room_id IN ($1)"
+
 const selectStateEventSQL = "" +
 	"SELECT headered_event_json FROM syncapi_current_room_state WHERE room_id = $1 AND type = $2 AND state_key = $3"
 
@@ -97,7 +100,8 @@ type currentRoomStateStatements struct {
 	selectRoomIDsWithMembershipStmt    *sql.Stmt
 	selectRoomIDsWithAnyMembershipStmt *sql.Stmt
 	selectJoinedUsersStmt              *sql.Stmt
-	selectStateEventStmt               *sql.Stmt
+	//selectJoinedUsersInRoomStmt        *sql.Stmt - prepared at runtime due to variadic
+	selectStateEventStmt *sql.Stmt
 }
 
 func NewSqliteCurrentRoomStateTable(db *sql.DB, streamID *StreamIDStatements) (tables.CurrentRoomState, error) {
@@ -127,13 +131,16 @@ func NewSqliteCurrentRoomStateTable(db *sql.DB, streamID *StreamIDStatements) (t
 	if s.selectJoinedUsersStmt, err = db.Prepare(selectJoinedUsersSQL); err != nil {
 		return nil, err
 	}
+	//if s.selectJoinedUsersInRoomStmt, err = db.Prepare(selectJoinedUsersInRoomSQL); err != nil {
+	//	return nil, err
+	//}
 	if s.selectStateEventStmt, err = db.Prepare(selectStateEventSQL); err != nil {
 		return nil, err
 	}
 	return s, nil
 }
 
-// JoinedMemberLists returns a map of room ID to a list of joined user IDs.
+// SelectJoinedUsers returns a map of room ID to a list of joined user IDs.
 func (s *currentRoomStateStatements) SelectJoinedUsers(
 	ctx context.Context,
 ) (map[string][]string, error) {
@@ -144,9 +151,9 @@ func (s *currentRoomStateStatements) SelectJoinedUsers(
 	defer internal.CloseAndLogIfError(ctx, rows, "selectJoinedUsers: rows.close() failed")
 
 	result := make(map[string][]string)
+	var roomID string
+	var userID string
 	for rows.Next() {
-		var roomID string
-		var userID string
 		if err := rows.Scan(&roomID, &userID); err != nil {
 			return nil, err
 		}
@@ -157,6 +164,40 @@ func (s *currentRoomStateStatements) SelectJoinedUsers(
 	return result, nil
 }
 
+// SelectJoinedUsersInRoom returns a map of room ID to a list of joined user IDs for a given room.
+func (s *currentRoomStateStatements) SelectJoinedUsersInRoom(
+	ctx context.Context, roomIDs []string,
+) (map[string][]string, error) {
+	query := strings.Replace(selectJoinedUsersInRoomSQL, "($1)", sqlutil.QueryVariadic(len(roomIDs)), 1)
+	params := make([]interface{}, 0, len(roomIDs))
+	for _, roomID := range roomIDs {
+		params = append(params, roomID)
+	}
+	stmt, err := s.db.Prepare(query)
+	if err != nil {
+		return nil, fmt.Errorf("SelectJoinedUsersInRoom s.db.Prepare: %w", err)
+	}
+	defer internal.CloseAndLogIfError(ctx, stmt, "SelectJoinedUsersInRoom: stmt.close() failed")
+
+	rows, err := stmt.QueryContext(ctx, params...)
+	if err != nil {
+		return nil, err
+	}
+	defer internal.CloseAndLogIfError(ctx, rows, "SelectJoinedUsersInRoom: rows.close() failed")
+
+	result := make(map[string][]string)
+	var userID, roomID string
+	for rows.Next() {
+		if err := rows.Scan(&roomID, &userID); err != nil {
+			return nil, err
+		}
+		users := result[roomID]
+		users = append(users, userID)
+		result[roomID] = users
+	}
+	return result, rows.Err()
+}
+
 // SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
 func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
 	ctx context.Context,

syncapi/storage/sqlite3/presence_table.go

@@ -17,6 +17,7 @@ package sqlite3
 import (
 	"context"
 	"database/sql"
+	"time"
 
 	"github.com/matrix-org/dendrite/internal"
 	"github.com/matrix-org/dendrite/internal/sqlutil"
@@ -71,7 +72,8 @@ const selectMaxPresenceSQL = "" +
 const selectPresenceAfter = "" +
 	" SELECT id, user_id, presence, status_msg, last_active_ts" +
 	" FROM syncapi_presence" +
-	" WHERE id > $1"
+	" WHERE id > $1 AND last_active_ts >= $2" +
+	" ORDER BY id ASC LIMIT $3"
 
 type presenceStatements struct {
 	db                         *sql.DB
@@ -158,12 +160,12 @@ func (p *presenceStatements) GetMaxPresenceID(ctx context.Context, txn *sql.Tx)
 // GetPresenceAfter returns the changes presences after a given stream id
 func (p *presenceStatements) GetPresenceAfter(
 	ctx context.Context, txn *sql.Tx,
-	after types.StreamPosition,
+	after types.StreamPosition, filter gomatrixserverlib.EventFilter,
 ) (presences map[string]*types.PresenceInternal, err error) {
 	presences = make(map[string]*types.PresenceInternal)
 	stmt := sqlutil.TxStmt(txn, p.selectPresenceAfterStmt)
-
+	afterTS := gomatrixserverlib.AsTimestamp(time.Now().Add(time.Minute * -5))
-	rows, err := stmt.QueryContext(ctx, after)
+	rows, err := stmt.QueryContext(ctx, after, afterTS, filter.Limit)
 	if err != nil {
 		return nil, err
 	}

syncapi/storage/tables/interface.go

@@ -102,6 +102,8 @@ type CurrentRoomState interface {
 	SelectRoomIDsWithAnyMembership(ctx context.Context, txn *sql.Tx, userID string) (map[string]string, error)
 	// SelectJoinedUsers returns a map of room ID to a list of joined user IDs.
 	SelectJoinedUsers(ctx context.Context) (map[string][]string, error)
+	// SelectJoinedUsersInRoom returns a map of room ID to a list of joined user IDs for a given room.
+	SelectJoinedUsersInRoom(ctx context.Context, roomIDs []string) (map[string][]string, error)
 }
 
 // BackwardsExtremities keeps track of backwards extremities for a room.
@@ -188,5 +190,5 @@ type Presence interface {
 	UpsertPresence(ctx context.Context, txn *sql.Tx, userID string, statusMsg *string, presence types.Presence, lastActiveTS gomatrixserverlib.Timestamp, fromSync bool) (pos types.StreamPosition, err error)
 	GetPresenceForUser(ctx context.Context, txn *sql.Tx, userID string) (presence *types.PresenceInternal, err error)
 	GetMaxPresenceID(ctx context.Context, txn *sql.Tx) (pos types.StreamPosition, err error)
-	GetPresenceAfter(ctx context.Context, txn *sql.Tx, after types.StreamPosition) (presences map[string]*types.PresenceInternal, err error)
+	GetPresenceAfter(ctx context.Context, txn *sql.Tx, after types.StreamPosition, filter gomatrixserverlib.EventFilter) (presences map[string]*types.PresenceInternal, err error)
 }

syncapi/streams/stream_presence.go

@@ -53,7 +53,8 @@ func (p *PresenceStreamProvider) IncrementalSync(
 	req *types.SyncRequest,
 	from, to types.StreamPosition,
 ) types.StreamPosition {
-	presences, err := p.DB.PresenceAfter(ctx, from)
+	// We pull out a larger number than the filter asks for, since we're filtering out events later
+	presences, err := p.DB.PresenceAfter(ctx, from, gomatrixserverlib.EventFilter{Limit: 1000})
 	if err != nil {
 		req.Log.WithError(err).Error("p.DB.PresenceAfter failed")
 		return from
@@ -66,12 +67,12 @@ func (p *PresenceStreamProvider) IncrementalSync(
 	// add newly joined rooms user presences
 	newlyJoined := joinedRooms(req.Response, req.Device.UserID)
 	if len(newlyJoined) > 0 {
-		// TODO: This refreshes all lists and is quite expensive
+		// TODO: Check if this is working better than before.
-		// The notifier should update the lists itself
+		if err = p.notifier.LoadRooms(ctx, p.DB, newlyJoined); err != nil {
-		if err = p.notifier.Load(ctx, p.DB); err != nil {
 			req.Log.WithError(err).Error("unable to refresh notifier lists")
 			return from
 		}
+	NewlyJoinedLoop:
 		for _, roomID := range newlyJoined {
 			roomUsers := p.notifier.JoinedUsers(roomID)
 			for i := range roomUsers {
@@ -86,11 +87,14 @@ func (p *PresenceStreamProvider) IncrementalSync(
 					req.Log.WithError(err).Error("unable to query presence for user")
 					return from
 				}
+				if len(presences) > req.Filter.Presence.Limit {
+					break NewlyJoinedLoop
+				}
 			}
 		}
 	}
 
-	lastPos := to
+	lastPos := from
 	for _, presence := range presences {
 		if presence == nil {
 			continue
@@ -135,6 +139,9 @@ func (p *PresenceStreamProvider) IncrementalSync(
 		if presence.StreamPos > lastPos {
 			lastPos = presence.StreamPos
 		}
+		if len(req.Response.Presence.Events) == req.Filter.Presence.Limit {
+			break
+		}
 		p.cache.Store(cacheKey, presence)
 	}
 

syncapi/sync/requestpool_test.go

@@ -30,7 +30,7 @@ func (d dummyDB) GetPresence(ctx context.Context, userID string) (*types.Presenc
 	return &types.PresenceInternal{}, nil
 }
 
-func (d dummyDB) PresenceAfter(ctx context.Context, after types.StreamPosition) (map[string]*types.PresenceInternal, error) {
+func (d dummyDB) PresenceAfter(ctx context.Context, after types.StreamPosition, filter gomatrixserverlib.EventFilter) (map[string]*types.PresenceInternal, error) {
 	return map[string]*types.PresenceInternal{}, nil
 }
 

sytest-blacklist

@@ -48,4 +48,3 @@ Notifications can be viewed with GET /notifications
 # More flakey
 
 If remote user leaves room we no longer receive device updates
-Local device key changes get to remote servers

userapi/storage/postgres/devices_table.go

@@ -75,7 +75,7 @@ const selectDeviceByTokenSQL = "" +
 	"SELECT session_id, device_id, localpart FROM device_devices WHERE access_token = $1"
 
 const selectDeviceByIDSQL = "" +
-	"SELECT display_name FROM device_devices WHERE localpart = $1 and device_id = $2"
+	"SELECT display_name, last_seen_ts, ip FROM device_devices WHERE localpart = $1 and device_id = $2"
 
 const selectDevicesByLocalpartSQL = "" +
 	"SELECT device_id, display_name, last_seen_ts, ip, user_agent FROM device_devices WHERE localpart = $1 AND device_id != $2 ORDER BY last_seen_ts DESC"
@@ -215,15 +215,22 @@ func (s *devicesStatements) SelectDeviceByID(
 	ctx context.Context, localpart, deviceID string,
 ) (*api.Device, error) {
 	var dev api.Device
-	var displayName sql.NullString
+	var displayName, ip sql.NullString
+	var lastseenTS sql.NullInt64
 	stmt := s.selectDeviceByIDStmt
-	err := stmt.QueryRowContext(ctx, localpart, deviceID).Scan(&displayName)
+	err := stmt.QueryRowContext(ctx, localpart, deviceID).Scan(&displayName, &lastseenTS, &ip)
 	if err == nil {
 		dev.ID = deviceID
 		dev.UserID = userutil.MakeUserID(localpart, s.serverName)
 		if displayName.Valid {
 			dev.DisplayName = displayName.String
 		}
+		if lastseenTS.Valid {
+			dev.LastSeenTS = lastseenTS.Int64
+		}
+		if ip.Valid {
+			dev.LastSeenIP = ip.String
+		}
 	}
 	return &dev, err
 }

userapi/storage/sqlite3/devices_table.go

@@ -60,7 +60,7 @@ const selectDeviceByTokenSQL = "" +
 	"SELECT session_id, device_id, localpart FROM device_devices WHERE access_token = $1"
 
 const selectDeviceByIDSQL = "" +
-	"SELECT display_name FROM device_devices WHERE localpart = $1 and device_id = $2"
+	"SELECT display_name, last_seen_ts, ip FROM device_devices WHERE localpart = $1 and device_id = $2"
 
 const selectDevicesByLocalpartSQL = "" +
 	"SELECT device_id, display_name, last_seen_ts, ip, user_agent FROM device_devices WHERE localpart = $1 AND device_id != $2 ORDER BY last_seen_ts DESC"
@@ -212,15 +212,22 @@ func (s *devicesStatements) SelectDeviceByID(
 	ctx context.Context, localpart, deviceID string,
 ) (*api.Device, error) {
 	var dev api.Device
-	var displayName sql.NullString
+	var displayName, ip sql.NullString
 	stmt := s.selectDeviceByIDStmt
-	err := stmt.QueryRowContext(ctx, localpart, deviceID).Scan(&displayName)
+	var lastseenTS sql.NullInt64
+	err := stmt.QueryRowContext(ctx, localpart, deviceID).Scan(&displayName, &lastseenTS, &ip)
 	if err == nil {
 		dev.ID = deviceID
 		dev.UserID = userutil.MakeUserID(localpart, s.serverName)
 		if displayName.Valid {
 			dev.DisplayName = displayName.String
 		}
+		if lastseenTS.Valid {
+			dev.LastSeenTS = lastseenTS.Int64
+		}
+		if ip.Valid {
+			dev.LastSeenIP = ip.String
+		}
 	}
 	return &dev, err
 }

userapi/storage/storage_test.go

@@ -180,12 +180,12 @@ func Test_Devices(t *testing.T) {
 		deviceWithID.DisplayName = newName
 		deviceWithID.LastSeenIP = "127.0.0.1"
 		deviceWithID.LastSeenTS = int64(gomatrixserverlib.AsTimestamp(time.Now().Truncate(time.Second)))
-		devices, err = db.GetDevicesByLocalpart(ctx, localpart)
+		gotDevice, err = db.GetDeviceByID(ctx, localpart, deviceWithID.ID)
 		assert.NoError(t, err, "unable to get device by id")
 		assert.Equal(t, 2, len(devices))
-		assert.Equal(t, deviceWithID.DisplayName, devices[0].DisplayName)
+		assert.Equal(t, deviceWithID.DisplayName, gotDevice.DisplayName)
-		assert.Equal(t, deviceWithID.LastSeenIP, devices[0].LastSeenIP)
+		assert.Equal(t, deviceWithID.LastSeenIP, gotDevice.LastSeenIP)
-		truncatedTime := gomatrixserverlib.Timestamp(devices[0].LastSeenTS).Time().Truncate(time.Second)
+		truncatedTime := gomatrixserverlib.Timestamp(gotDevice.LastSeenTS).Time().Truncate(time.Second)
 		assert.Equal(t, gomatrixserverlib.Timestamp(deviceWithID.LastSeenTS), gomatrixserverlib.AsTimestamp(truncatedTime))
 
 		// create one more device and remove the devices step by step