Merge branch 'master' into event-redaction

CONTRIBUTING.md

@@ -20,6 +20,39 @@ should pick up any unit test and run it). There are also [scripts](scripts) for
 [linting](scripts/find-lint.sh) and doing a [build/test/lint
 run](scripts/build-test-lint.sh).
 
+## Continuous Integration
+
+When a Pull Request is submitted, continuous integration jobs are run
+automatically to ensure the code builds and is relatively well-written. Checks
+are run on [Buildkite](https://buildkite.com/matrix-dot-org/dendrite/) and
+[CircleCI](https://circleci.com/gh/matrix-org/dendrite/).
+
+If a job fails, click the "details" button and you should be taken to the job's
+logs.
+
+![Click the details button on the failing build step](docs/images/details-button-location.jpg)
+
+Scroll down to the failing step and you should see some log output. Scan
+the logs until you find what it's complaining about, fix it, submit a new
+commit, then rinse and repeat until CI passes.
+
+### Running CI Tests Locally
+
+To save waiting for CI to finish after every commit, it is ideal to run the
+checks locally before pushing, fixing errors first. This also saves other
+people time as only so many PRs can be tested at a given time.
+
+To execute what Buildkite tests, simply run `./scripts/build-test-lint.sh`.
+This script will build the code, lint it, and run `go test ./...` with race
+condition checking enabled. If something needs to be changed, fix it and then
+run the script again until it no longer complains. Be warned that the linting
+can take a significant amount of CPU and RAM.
+
+CircleCI simply runs [Sytest](https://github.com/matrix-org/sytest) with a test
+whitelist. See
+[docs/sytest.md](https://github.com/matrix-org/dendrite/blob/master/docs/sytest.md#using-a-sytest-docker-image)
+for instructions on setting it up to run locally.
+
 
 ## Picking Things To Do
 

README.md

@@ -1,4 +1,4 @@
-# Dendrite [![Build Status](https://badge.buildkite.com/4be40938ab19f2bbc4a6c6724517353ee3ec1422e279faf374.svg)](https://buildkite.com/matrix-dot-org/dendrite) [![CircleCI](https://circleci.com/gh/matrix-org/dendrite.svg?style=svg)](https://circleci.com/gh/matrix-org/dendrite) [![Dendrite Dev on Matrix](https://img.shields.io/matrix/dendrite-dev:matrix.org.svg?label=%23dendrite-dev%3Amatrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#dendrite-dev:matrix.org) [![Dendrite on Matrix](https://img.shields.io/matrix/dendrite:matrix.org.svg?label=%23dendrite%3Amatrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#dendrite:matrix.org)
+# Dendrite [![Build Status](https://badge.buildkite.com/4be40938ab19f2bbc4a6c6724517353ee3ec1422e279faf374.svg?branch=master)](https://buildkite.com/matrix-dot-org/dendrite) [![CircleCI](https://circleci.com/gh/matrix-org/dendrite.svg?style=svg)](https://circleci.com/gh/matrix-org/dendrite) [![Dendrite Dev on Matrix](https://img.shields.io/matrix/dendrite-dev:matrix.org.svg?label=%23dendrite-dev%3Amatrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#dendrite-dev:matrix.org) [![Dendrite on Matrix](https://img.shields.io/matrix/dendrite:matrix.org.svg?label=%23dendrite%3Amatrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#dendrite:matrix.org)
 
 Dendrite will be a matrix homeserver written in go.
 

appservice/api/query.go

@@ -20,13 +20,13 @@ package api
 import (
 	"context"
 	"database/sql"
-	"errors"
 	"net/http"
 
 	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
 	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
 	"github.com/matrix-org/gomatrixserverlib"
 
+	"github.com/matrix-org/dendrite/common"
 	commonHTTP "github.com/matrix-org/dendrite/common/http"
 	opentracing "github.com/opentracing/opentracing-go"
 )
@@ -164,7 +164,7 @@ func RetrieveUserProfile(
 
 	// If no user exists, return
 	if !userResp.UserIDExists {
-		return nil, errors.New("no known profile for given user ID")
+		return nil, common.ErrProfileNoExists
 	}
 
 	// Try to query the user from the local database again

clientapi/auth/authtypes/profile.go

@@ -14,7 +14,7 @@
 
 package authtypes
 
-// Profile represents the profile for a Matrix account on this home server.
+// Profile represents the profile for a Matrix account.
 type Profile struct {
 	Localpart   string
 	DisplayName string

clientapi/auth/storage/accounts/storage.go

@@ -230,7 +230,7 @@ func (d *Database) newMembership(
 		}
 
 		// Only "join" membership events can be considered as new memberships
-		if membership == "join" {
+		if membership == gomatrixserverlib.Join {
 			if err := d.saveMembership(ctx, txn, localpart, roomID, eventID); err != nil {
 				return err
 			}

clientapi/routing/createroom.go

@@ -55,10 +55,6 @@ const (
 	presetPublicChat         = "public_chat"
 )
 
-const (
-	joinRulePublic = "public"
-	joinRuleInvite = "invite"
-)
 const (
 	historyVisibilityShared = "shared"
 	// TODO: These should be implemented once history visibility is implemented
@@ -201,7 +197,7 @@ func createRoom(
 	}
 
 	membershipContent := common.MemberContent{
-		Membership:  "join",
+		Membership:  gomatrixserverlib.Join,
 		DisplayName: profile.DisplayName,
 		AvatarURL:   profile.AvatarURL,
 	}
@@ -209,19 +205,19 @@ func createRoom(
 	var joinRules, historyVisibility string
 	switch r.Preset {
 	case presetPrivateChat:
-		joinRules = joinRuleInvite
+		joinRules = gomatrixserverlib.Invite
 		historyVisibility = historyVisibilityShared
 	case presetTrustedPrivateChat:
-		joinRules = joinRuleInvite
+		joinRules = gomatrixserverlib.Invite
 		historyVisibility = historyVisibilityShared
 		// TODO If trusted_private_chat, all invitees are given the same power level as the room creator.
 	case presetPublicChat:
-		joinRules = joinRulePublic
+		joinRules = gomatrixserverlib.Public
 		historyVisibility = historyVisibilityShared
 	default:
 		// Default room rules, r.Preset was previously checked for valid values so
 		// only a request with no preset should end up here.
-		joinRules = joinRuleInvite
+		joinRules = gomatrixserverlib.Invite
 		historyVisibility = historyVisibilityShared
 	}
 

clientapi/routing/directory.go

@@ -164,13 +164,36 @@ func SetLocalAlias(
 }
 
 // RemoveLocalAlias implements DELETE /directory/room/{roomAlias}
-// TODO: Check if the user has the power level to remove an alias
 func RemoveLocalAlias(
 	req *http.Request,
 	device *authtypes.Device,
 	alias string,
 	aliasAPI roomserverAPI.RoomserverAliasAPI,
 ) util.JSONResponse {
+
+	creatorQueryReq := roomserverAPI.GetCreatorIDForAliasRequest{
+		Alias: alias,
+	}
+	var creatorQueryRes roomserverAPI.GetCreatorIDForAliasResponse
+	if err := aliasAPI.GetCreatorIDForAlias(req.Context(), &creatorQueryReq, &creatorQueryRes); err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	if creatorQueryRes.UserID == "" {
+		return util.JSONResponse{
+			Code: http.StatusNotFound,
+			JSON: jsonerror.NotFound("Alias does not exist"),
+		}
+	}
+
+	if creatorQueryRes.UserID != device.UserID {
+		// TODO: Still allow deletion if user is admin
+		return util.JSONResponse{
+			Code: http.StatusForbidden,
+			JSON: jsonerror.Forbidden("You do not have permission to delete this alias"),
+		}
+	}
+
 	queryReq := roomserverAPI.RemoveRoomAliasRequest{
 		Alias:  alias,
 		UserID: device.UserID,

clientapi/routing/getevent.go

@@ -0,0 +1,127 @@
+// Copyright 2019 Alex Chen
+//
+// 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 routing
+
+import (
+	"net/http"
+
+	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
+	"github.com/matrix-org/dendrite/clientapi/httputil"
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	"github.com/matrix-org/dendrite/common/config"
+	"github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+)
+
+type getEventRequest struct {
+	req            *http.Request
+	device         *authtypes.Device
+	roomID         string
+	eventID        string
+	cfg            config.Dendrite
+	federation     *gomatrixserverlib.FederationClient
+	keyRing        gomatrixserverlib.KeyRing
+	requestedEvent gomatrixserverlib.Event
+}
+
+// GetEvent implements GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}
+// https://matrix.org/docs/spec/client_server/r0.4.0.html#get-matrix-client-r0-rooms-roomid-event-eventid
+func GetEvent(
+	req *http.Request,
+	device *authtypes.Device,
+	roomID string,
+	eventID string,
+	cfg config.Dendrite,
+	queryAPI api.RoomserverQueryAPI,
+	federation *gomatrixserverlib.FederationClient,
+	keyRing gomatrixserverlib.KeyRing,
+) util.JSONResponse {
+	eventsReq := api.QueryEventsByIDRequest{
+		EventIDs: []string{eventID},
+	}
+	var eventsResp api.QueryEventsByIDResponse
+	err := queryAPI.QueryEventsByID(req.Context(), &eventsReq, &eventsResp)
+	if err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	if len(eventsResp.Events) == 0 {
+		// Event not found locally
+		return util.JSONResponse{
+			Code: http.StatusNotFound,
+			JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
+		}
+	}
+
+	requestedEvent := eventsResp.Events[0]
+
+	r := getEventRequest{
+		req:            req,
+		device:         device,
+		roomID:         roomID,
+		eventID:        eventID,
+		cfg:            cfg,
+		federation:     federation,
+		keyRing:        keyRing,
+		requestedEvent: requestedEvent,
+	}
+
+	stateReq := api.QueryStateAfterEventsRequest{
+		RoomID:       r.requestedEvent.RoomID(),
+		PrevEventIDs: r.requestedEvent.PrevEventIDs(),
+		StateToFetch: []gomatrixserverlib.StateKeyTuple{{
+			EventType: gomatrixserverlib.MRoomMember,
+			StateKey:  device.UserID,
+		}},
+	}
+	var stateResp api.QueryStateAfterEventsResponse
+	if err := queryAPI.QueryStateAfterEvents(req.Context(), &stateReq, &stateResp); err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	if !stateResp.RoomExists {
+		util.GetLogger(req.Context()).Errorf("Expected to find room for event %s but failed", r.requestedEvent.EventID())
+		return jsonerror.InternalServerError()
+	}
+
+	if !stateResp.PrevEventsExist {
+		// Missing some events locally; stateResp.StateEvents unavailable.
+		return util.JSONResponse{
+			Code: http.StatusNotFound,
+			JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
+		}
+	}
+
+	for _, stateEvent := range stateResp.StateEvents {
+		if stateEvent.StateKeyEquals(r.device.UserID) {
+			membership, err := stateEvent.Membership()
+			if err != nil {
+				return httputil.LogThenError(req, err)
+			}
+			if membership == gomatrixserverlib.Join {
+				return util.JSONResponse{
+					Code: http.StatusOK,
+					JSON: gomatrixserverlib.ToClientEvent(r.requestedEvent, gomatrixserverlib.FormatAll),
+				}
+			}
+		}
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusNotFound,
+		JSON: jsonerror.NotFound("The event was not found or you do not have permission to read this event"),
+	}
+}

clientapi/routing/joinroom.go

@@ -70,7 +70,7 @@ func JoinRoomByIDOrAlias(
 		return httputil.LogThenError(req, err)
 	}
 
-	content["membership"] = "join"
+	content["membership"] = gomatrixserverlib.Join
 	content["displayname"] = profile.DisplayName
 	content["avatar_url"] = profile.AvatarURL
 

clientapi/routing/membership.go

@@ -102,7 +102,7 @@ func SendMembership(
 	var returnData interface{} = struct{}{}
 
 	// The join membership requires the room id to be sent in the response
-	if membership == "join" {
+	if membership == gomatrixserverlib.Join {
 		returnData = struct {
 			RoomID string `json:"room_id"`
 		}{roomID}
@@ -141,7 +141,7 @@ func buildMembershipEvent(
 
 	// "unban" or "kick" isn't a valid membership value, change it to "leave"
 	if membership == "unban" || membership == "kick" {
-		membership = "leave"
+		membership = gomatrixserverlib.Leave
 	}
 
 	content := common.MemberContent{
@@ -192,7 +192,7 @@ func loadProfile(
 func getMembershipStateKey(
 	body threepid.MembershipRequest, device *authtypes.Device, membership string,
 ) (stateKey string, reason string, err error) {
-	if membership == "ban" || membership == "unban" || membership == "kick" || membership == "invite" {
+	if membership == gomatrixserverlib.Ban || membership == "unban" || membership == "kick" || membership == gomatrixserverlib.Invite {
 		// If we're in this case, the state key is contained in the request body,
 		// possibly along with a reason (for "kick" and "ban") so we need to parse
 		// it

clientapi/routing/profile.go

@@ -30,43 +30,61 @@ import (
 	"github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/gomatrixserverlib"
 
+	"github.com/matrix-org/gomatrix"
 	"github.com/matrix-org/util"
 )
 
 // GetProfile implements GET /profile/{userID}
 func GetProfile(
-	req *http.Request, accountDB *accounts.Database, userID string, asAPI appserviceAPI.AppServiceQueryAPI,
+	req *http.Request, accountDB *accounts.Database, cfg *config.Dendrite,
+	userID string,
+	asAPI appserviceAPI.AppServiceQueryAPI,
+	federation *gomatrixserverlib.FederationClient,
 ) util.JSONResponse {
-	profile, err := appserviceAPI.RetrieveUserProfile(req.Context(), userID, asAPI, accountDB)
+	profile, err := getProfile(req.Context(), accountDB, cfg, userID, asAPI, federation)
 	if err != nil {
+		if err == common.ErrProfileNoExists {
+			return util.JSONResponse{
+				Code: http.StatusNotFound,
+				JSON: jsonerror.NotFound("The user does not exist or does not have a profile"),
+			}
+		}
+
 		return httputil.LogThenError(req, err)
 	}
 
-	res := common.ProfileResponse{
-		AvatarURL:   profile.AvatarURL,
-		DisplayName: profile.DisplayName,
-	}
 	return util.JSONResponse{
 		Code: http.StatusOK,
-		JSON: res,
+		JSON: common.ProfileResponse{
+			AvatarURL:   profile.AvatarURL,
+			DisplayName: profile.DisplayName,
+		},
 	}
 }
 
 // GetAvatarURL implements GET /profile/{userID}/avatar_url
 func GetAvatarURL(
-	req *http.Request, accountDB *accounts.Database, userID string, asAPI appserviceAPI.AppServiceQueryAPI,
+	req *http.Request, accountDB *accounts.Database, cfg *config.Dendrite,
+	userID string, asAPI appserviceAPI.AppServiceQueryAPI,
+	federation *gomatrixserverlib.FederationClient,
 ) util.JSONResponse {
-	profile, err := appserviceAPI.RetrieveUserProfile(req.Context(), userID, asAPI, accountDB)
+	profile, err := getProfile(req.Context(), accountDB, cfg, userID, asAPI, federation)
 	if err != nil {
+		if err == common.ErrProfileNoExists {
+			return util.JSONResponse{
+				Code: http.StatusNotFound,
+				JSON: jsonerror.NotFound("The user does not exist or does not have a profile"),
+			}
+		}
+
 		return httputil.LogThenError(req, err)
 	}
 
-	res := common.AvatarURL{
-		AvatarURL: profile.AvatarURL,
-	}
 	return util.JSONResponse{
 		Code: http.StatusOK,
-		JSON: res,
+		JSON: common.AvatarURL{
+			AvatarURL: profile.AvatarURL,
+		},
 	}
 }
 
@@ -152,18 +170,27 @@ func SetAvatarURL(
 
 // GetDisplayName implements GET /profile/{userID}/displayname
 func GetDisplayName(
-	req *http.Request, accountDB *accounts.Database, userID string, asAPI appserviceAPI.AppServiceQueryAPI,
+	req *http.Request, accountDB *accounts.Database, cfg *config.Dendrite,
+	userID string, asAPI appserviceAPI.AppServiceQueryAPI,
+	federation *gomatrixserverlib.FederationClient,
 ) util.JSONResponse {
-	profile, err := appserviceAPI.RetrieveUserProfile(req.Context(), userID, asAPI, accountDB)
+	profile, err := getProfile(req.Context(), accountDB, cfg, userID, asAPI, federation)
 	if err != nil {
+		if err == common.ErrProfileNoExists {
+			return util.JSONResponse{
+				Code: http.StatusNotFound,
+				JSON: jsonerror.NotFound("The user does not exist or does not have a profile"),
+			}
+		}
+
 		return httputil.LogThenError(req, err)
 	}
-	res := common.DisplayName{
+
-		DisplayName: profile.DisplayName,
-	}
 	return util.JSONResponse{
 		Code: http.StatusOK,
-		JSON: res,
+		JSON: common.DisplayName{
+			DisplayName: profile.DisplayName,
+		},
 	}
 }
 
@@ -247,6 +274,48 @@ func SetDisplayName(
 	}
 }
 
+// getProfile gets the full profile of a user by querying the database or a
+// remote homeserver.
+// Returns an error when something goes wrong or specifically
+// common.ErrProfileNoExists when the profile doesn't exist.
+func getProfile(
+	ctx context.Context, accountDB *accounts.Database, cfg *config.Dendrite,
+	userID string,
+	asAPI appserviceAPI.AppServiceQueryAPI,
+	federation *gomatrixserverlib.FederationClient,
+) (*authtypes.Profile, error) {
+	localpart, domain, err := gomatrixserverlib.SplitID('@', userID)
+	if err != nil {
+		return nil, err
+	}
+
+	if domain != cfg.Matrix.ServerName {
+		profile, fedErr := federation.LookupProfile(ctx, domain, userID, "")
+		if fedErr != nil {
+			if x, ok := fedErr.(gomatrix.HTTPError); ok {
+				if x.Code == http.StatusNotFound {
+					return nil, common.ErrProfileNoExists
+				}
+			}
+
+			return nil, fedErr
+		}
+
+		return &authtypes.Profile{
+			Localpart:   localpart,
+			DisplayName: profile.DisplayName,
+			AvatarURL:   profile.AvatarURL,
+		}, nil
+	}
+
+	profile, err := appserviceAPI.RetrieveUserProfile(ctx, userID, asAPI, accountDB)
+	if err != nil {
+		return nil, err
+	}
+
+	return profile, nil
+}
+
 func buildMembershipEvents(
 	ctx context.Context,
 	memberships []authtypes.Membership,
@@ -264,7 +333,7 @@ func buildMembershipEvents(
 		}
 
 		content := common.MemberContent{
-			Membership: "join",
+			Membership: gomatrixserverlib.Join,
 		}
 
 		content.DisplayName = newProfile.DisplayName

clientapi/routing/routing.go

@@ -93,7 +93,7 @@ func Setup(
 		}),
 	).Methods(http.MethodPost, http.MethodOptions)
 	r0mux.Handle("/join/{roomIDOrAlias}",
-		common.MakeAuthAPI("join", authData, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
+		common.MakeAuthAPI(gomatrixserverlib.Join, authData, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
 			vars, err := common.URLDecodeMapValues(mux.Vars(req))
 			if err != nil {
 				return util.ErrorResponse(err)
@@ -132,6 +132,15 @@ func Setup(
 				nil, cfg, queryAPI, producer, transactionsCache)
 		}),
 	).Methods(http.MethodPut, http.MethodOptions)
+	r0mux.Handle("/rooms/{roomID}/event/{eventID}",
+		common.MakeAuthAPI("rooms_get_event", authData, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
+			vars, err := common.URLDecodeMapValues(mux.Vars(req))
+			if err != nil {
+				return util.ErrorResponse(err)
+			}
+			return GetEvent(req, device, vars["roomID"], vars["eventID"], cfg, queryAPI, federation, keyRing)
+		}),
+	).Methods(http.MethodGet, http.MethodOptions)
 	r0mux.Handle("/rooms/{roomID}/state/{eventType:[^/]+/?}",
 		common.MakeAuthAPI("send_message", authData, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
 			vars, err := common.URLDecodeMapValues(mux.Vars(req))
@@ -305,7 +314,7 @@ func Setup(
 			if err != nil {
 				return util.ErrorResponse(err)
 			}
-			return GetProfile(req, accountDB, vars["userID"], asAPI)
+			return GetProfile(req, accountDB, &cfg, vars["userID"], asAPI, federation)
 		}),
 	).Methods(http.MethodGet, http.MethodOptions)
 
@@ -315,7 +324,7 @@ func Setup(
 			if err != nil {
 				return util.ErrorResponse(err)
 			}
-			return GetAvatarURL(req, accountDB, vars["userID"], asAPI)
+			return GetAvatarURL(req, accountDB, &cfg, vars["userID"], asAPI, federation)
 		}),
 	).Methods(http.MethodGet, http.MethodOptions)
 
@@ -337,7 +346,7 @@ func Setup(
 			if err != nil {
 				return util.ErrorResponse(err)
 			}
-			return GetDisplayName(req, accountDB, vars["userID"], asAPI)
+			return GetDisplayName(req, accountDB, &cfg, vars["userID"], asAPI, federation)
 		}),
 	).Methods(http.MethodGet, http.MethodOptions)
 

clientapi/routing/sendevent.go

@@ -50,7 +50,7 @@ func SendEvent(
 ) util.JSONResponse {
 	if txnID != nil {
 		// Try to fetch response from transactionsCache
-		if res, ok := txnCache.FetchTransaction(*txnID); ok {
+		if res, ok := txnCache.FetchTransaction(device.AccessToken, *txnID); ok {
 			return *res
 		}
 	}
@@ -83,7 +83,7 @@ func SendEvent(
 	}
 	// Add response to transactionsCache
 	if txnID != nil {
-		txnCache.AddTransaction(*txnID, &res)
+		txnCache.AddTransaction(device.AccessToken, *txnID, &res)
 	}
 
 	return res

clientapi/threepid/invites.go

@@ -91,7 +91,7 @@ func CheckAndProcessInvite(
 	producer *producers.RoomserverProducer, membership string, roomID string,
 	evTime time.Time,
 ) (inviteStoredOnIDServer bool, err error) {
-	if membership != "invite" || (body.Address == "" && body.IDServer == "" && body.Medium == "") {
+	if membership != gomatrixserverlib.Invite || (body.Address == "" && body.IDServer == "" && body.Medium == "") {
 		// If none of the 3PID-specific fields are supplied, it's a standard invite
 		// so return nil for it to be processed as such
 		return

cmd/create-room-events/main.go

@@ -86,7 +86,7 @@ func main() {
 	// Build a m.room.member event.
 	b.Type = "m.room.member"
 	b.StateKey = userID
-	b.SetContent(map[string]string{"membership": "join"}) // nolint: errcheck
+	b.SetContent(map[string]string{"membership": gomatrixserverlib.Join}) // nolint: errcheck
 	b.AuthEvents = []gomatrixserverlib.EventReference{create}
 	member := buildAndOutput()
 

common/transactions/transactions.go

@@ -22,7 +22,14 @@ import (
 // DefaultCleanupPeriod represents the default time duration after which cacheCleanService runs.
 const DefaultCleanupPeriod time.Duration = 30 * time.Minute
 
-type txnsMap map[string]*util.JSONResponse
+type txnsMap map[CacheKey]*util.JSONResponse
+
+// CacheKey is the type for the key in a transactions cache.
+// This is needed because the spec requires transaction IDs to have a per-access token scope.
+type CacheKey struct {
+	AccessToken string
+	TxnID       string
+}
 
 // Cache represents a temporary store for response entries.
 // Entries are evicted after a certain period, defined by cleanupPeriod.
@@ -50,14 +57,14 @@ func NewWithCleanupPeriod(cleanupPeriod time.Duration) *Cache {
 	return &t
 }
 
-// FetchTransaction looks up an entry for txnID in Cache.
+// FetchTransaction looks up an entry for the (accessToken, txnID) tuple in Cache.
 // Looks in both the txnMaps.
 // Returns (JSON response, true) if txnID is found, else the returned bool is false.
-func (t *Cache) FetchTransaction(txnID string) (*util.JSONResponse, bool) {
+func (t *Cache) FetchTransaction(accessToken, txnID string) (*util.JSONResponse, bool) {
 	t.RLock()
 	defer t.RUnlock()
 	for _, txns := range t.txnsMaps {
-		res, ok := txns[txnID]
+		res, ok := txns[CacheKey{accessToken, txnID}]
 		if ok {
 			return res, true
 		}
@@ -65,13 +72,13 @@ func (t *Cache) FetchTransaction(txnID string) (*util.JSONResponse, bool) {
 	return nil, false
 }
 
-// AddTransaction adds an entry for txnID in Cache for later access.
+// AddTransaction adds an entry for the (accessToken, txnID) tuple in Cache.
 // Adds to the front txnMap.
-func (t *Cache) AddTransaction(txnID string, res *util.JSONResponse) {
+func (t *Cache) AddTransaction(accessToken, txnID string, res *util.JSONResponse) {
 	t.Lock()
 	defer t.Unlock()
 
-	t.txnsMaps[0][txnID] = res
+	t.txnsMaps[0][CacheKey{accessToken, txnID}] = res
 }
 
 // cacheCleanService is responsible for cleaning up entries after cleanupPeriod.

common/transactions/transactions_test.go

@@ -24,27 +24,54 @@ type fakeType struct {
 }
 
 var (
+	fakeAccessToken  = "aRandomAccessToken"
+	fakeAccessToken2 = "anotherRandomAccessToken"
 	fakeTxnID        = "aRandomTxnID"
-	fakeResponse = &util.JSONResponse{Code: http.StatusOK, JSON: fakeType{ID: "0"}}
+	fakeResponse     = &util.JSONResponse{
+		Code: http.StatusOK, JSON: fakeType{ID: "0"},
+	}
+	fakeResponse2 = &util.JSONResponse{
+		Code: http.StatusOK, JSON: fakeType{ID: "1"},
+	}
 )
 
 // TestCache creates a New Cache and tests AddTransaction & FetchTransaction
 func TestCache(t *testing.T) {
 	fakeTxnCache := New()
-	fakeTxnCache.AddTransaction(fakeTxnID, fakeResponse)
+	fakeTxnCache.AddTransaction(fakeAccessToken, fakeTxnID, fakeResponse)
 
 	// Add entries for noise.
 	for i := 1; i <= 100; i++ {
 		fakeTxnCache.AddTransaction(
+			fakeAccessToken,
 			fakeTxnID+string(i),
 			&util.JSONResponse{Code: http.StatusOK, JSON: fakeType{ID: string(i)}},
 		)
 	}
 
-	testResponse, ok := fakeTxnCache.FetchTransaction(fakeTxnID)
+	testResponse, ok := fakeTxnCache.FetchTransaction(fakeAccessToken, fakeTxnID)
 	if !ok {
 		t.Error("Failed to retrieve entry for txnID: ", fakeTxnID)
 	} else if testResponse.JSON != fakeResponse.JSON {
 		t.Error("Fetched response incorrect. Expected: ", fakeResponse.JSON, " got: ", testResponse.JSON)
 	}
 }
+
+// TestCacheScope ensures transactions with the same transaction ID are not shared
+// across multiple access tokens.
+func TestCacheScope(t *testing.T) {
+	cache := New()
+	cache.AddTransaction(fakeAccessToken, fakeTxnID, fakeResponse)
+	cache.AddTransaction(fakeAccessToken2, fakeTxnID, fakeResponse2)
+
+	if res, ok := cache.FetchTransaction(fakeAccessToken, fakeTxnID); !ok {
+		t.Errorf("failed to retrieve entry for (%s, %s)", fakeAccessToken, fakeTxnID)
+	} else if res.JSON != fakeResponse.JSON {
+		t.Errorf("Wrong cache entry for (%s, %s). Expected: %v; got: %v", fakeAccessToken, fakeTxnID, fakeResponse.JSON, res.JSON)
+	}
+	if res, ok := cache.FetchTransaction(fakeAccessToken2, fakeTxnID); !ok {
+		t.Errorf("failed to retrieve entry for (%s, %s)", fakeAccessToken, fakeTxnID)
+	} else if res.JSON != fakeResponse2.JSON {
+		t.Errorf("Wrong cache entry for (%s, %s). Expected: %v; got: %v", fakeAccessToken, fakeTxnID, fakeResponse2.JSON, res.JSON)
+	}
+}

common/types.go

@@ -15,9 +15,14 @@
 package common
 
 import (
+	"errors"
 	"strconv"
 )
 
+// ErrProfileNoExists is returned when trying to lookup a user's profile that
+// doesn't exist locally.
+var ErrProfileNoExists = errors.New("no known profile for given user ID")
+
 // AccountData represents account data sent from the client API server to the
 // sync API server
 type AccountData struct {

docker/README.md

@@ -58,7 +58,7 @@ docker-compose up kafka zookeeper postgres
 and the following dendrite components 
 
 ```
-docker-compose up client_api media_api sync_api room_server public_rooms_api
+docker-compose up client_api media_api sync_api room_server public_rooms_api typing_server
 docker-compose up client_api_proxy
 ```
 

docker/dendrite-docker.yml

@@ -114,6 +114,7 @@ listen:
     media_api: "media_api:7774"
     public_rooms_api: "public_rooms_api:7775"
     federation_sender: "federation_sender:7776"
+    typing_server: "typing_server:7777"
 
 # The configuration for tracing the dendrite components.
 tracing:

docker/docker-compose.yml

@@ -95,6 +95,16 @@ services:
     networks:
       - internal
 
+  typing_server:
+    container_name: dendrite_typing_server
+    hostname: typing_server
+    entrypoint: ["bash", "./docker/services/typing-server.sh"]
+    build: ./
+    volumes:
+      - ..:/build
+    networks:
+      - internal
+
   federation_api_proxy:
     container_name: dendrite_federation_api_proxy
     hostname: federation_api_proxy

docker/services/typing-server.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+bash ./docker/build.sh
+
+./bin/dendrite-typing-server --config=dendrite.yaml

federationapi/routing/join.go

@@ -58,7 +58,7 @@ func MakeJoin(
 		Type:     "m.room.member",
 		StateKey: &userID,
 	}
-	err = builder.SetContent(map[string]interface{}{"membership": "join"})
+	err = builder.SetContent(map[string]interface{}{"membership": gomatrixserverlib.Join})
 	if err != nil {
 		return httputil.LogThenError(httpReq, err)
 	}

federationapi/routing/leave.go

@@ -56,7 +56,7 @@ func MakeLeave(
 		Type:     "m.room.member",
 		StateKey: &userID,
 	}
-	err = builder.SetContent(map[string]interface{}{"membership": "leave"})
+	err = builder.SetContent(map[string]interface{}{"membership": gomatrixserverlib.Leave})
 	if err != nil {
 		return httputil.LogThenError(httpReq, err)
 	}
@@ -153,7 +153,7 @@ func SendLeave(
 	mem, err := event.Membership()
 	if err != nil {
 		return httputil.LogThenError(httpReq, err)
-	} else if mem != "leave" {
+	} else if mem != gomatrixserverlib.Leave {
 		return util.JSONResponse{
 			Code: http.StatusBadRequest,
 			JSON: jsonerror.BadJSON("The membership in the event content must be set to leave"),

federationapi/routing/threepid.go

@@ -202,7 +202,7 @@ func createInviteFrom3PIDInvite(
 	content := common.MemberContent{
 		AvatarURL:   profile.AvatarURL,
 		DisplayName: profile.DisplayName,
-		Membership:  "invite",
+		Membership:  gomatrixserverlib.Invite,
 		ThirdPartyInvite: &common.TPInvite{
 			Signed: inv.Signed,
 		},

federationsender/consumers/roomserver.go

@@ -233,7 +233,7 @@ func joinedHostsFromEvents(evs []gomatrixserverlib.Event) ([]types.JoinedHost, e
 		if err != nil {
 			return nil, err
 		}
-		if membership != "join" {
+		if membership != gomatrixserverlib.Join {
 			continue
 		}
 		_, serverName, err := gomatrixserverlib.SplitID('@', *ev.StateKey())

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/lib/pq v0.0.0-20170918175043-23da1db4f16d
 	github.com/matrix-org/dugong v0.0.0-20171220115018-ea0a4690a0d5
 	github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20190727114627-340519e0d9e3
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20190805173246-3a2199d5ecd6
 	github.com/matrix-org/naffka v0.0.0-20171115094957-662bfd0841d0
 	github.com/matrix-org/util v0.0.0-20171127121716-2e2df66af2f5
 	github.com/matttproud/golang_protobuf_extensions v1.0.1

go.sum

@@ -56,8 +56,8 @@ github.com/matrix-org/gomatrixserverlib v0.0.0-20190619132215-178ed5e3b8e2 h1:pY
 github.com/matrix-org/gomatrixserverlib v0.0.0-20190619132215-178ed5e3b8e2/go.mod h1:sf0RcKOdiwJeTti7A313xsaejNUGYDq02MQZ4JD4w/E=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20190724145009-a6df10ef35d6 h1:B8n1H5Wb1B5jwLzTylBpY0kJCMRqrofT7PmOw4aJFJA=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20190724145009-a6df10ef35d6/go.mod h1:sf0RcKOdiwJeTti7A313xsaejNUGYDq02MQZ4JD4w/E=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20190727114627-340519e0d9e3 h1:KFsMDKAyyyA04qJFNrhOpnIGfjPZRu6797ylL2cG4zs=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20190805173246-3a2199d5ecd6 h1:xr69Hk6QM3RIN6JSvx3RpDowBGpHpDDqhqXCeySwYow=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20190727114627-340519e0d9e3/go.mod h1:sf0RcKOdiwJeTti7A313xsaejNUGYDq02MQZ4JD4w/E=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20190805173246-3a2199d5ecd6/go.mod h1:sf0RcKOdiwJeTti7A313xsaejNUGYDq02MQZ4JD4w/E=
 github.com/matrix-org/naffka v0.0.0-20171115094957-662bfd0841d0 h1:p7WTwG+aXM86+yVrYAiCMW3ZHSmotVvuRbjtt3jC+4A=
 github.com/matrix-org/naffka v0.0.0-20171115094957-662bfd0841d0/go.mod h1:cXoYQIENbdWIQHt1SyCo6Bl3C3raHwJ0wgVrXHSqf+A=
 github.com/matrix-org/util v0.0.0-20171013132526-8b1c8ab81986 h1:TiWl4hLvezAhRPM8tPcPDFTysZ7k4T/1J4GPp/iqlZo=

publicroomsapi/directory/directory.go

@@ -19,6 +19,7 @@ import (
 
 	"github.com/matrix-org/dendrite/clientapi/httputil"
 	"github.com/matrix-org/dendrite/publicroomsapi/storage"
+	"github.com/matrix-org/gomatrixserverlib"
 
 	"github.com/matrix-org/util"
 )
@@ -39,7 +40,7 @@ func GetVisibility(
 
 	var v roomVisibility
 	if isPublic {
-		v.Visibility = "public"
+		v.Visibility = gomatrixserverlib.Public
 	} else {
 		v.Visibility = "private"
 	}
@@ -61,7 +62,7 @@ func SetVisibility(
 		return *reqErr
 	}
 
-	isPublic := v.Visibility == "public"
+	isPublic := v.Visibility == gomatrixserverlib.Public
 	if err := publicRoomsDatabase.SetRoomVisibility(req.Context(), isPublic, roomID); err != nil {
 		return httputil.LogThenError(req, err)
 	}

publicroomsapi/storage/storage.go

@@ -185,7 +185,7 @@ func (d *PublicRoomsServerDatabase) updateNumJoinedUsers(
 		return err
 	}
 
-	if membership != "join" {
+	if membership != gomatrixserverlib.Join {
 		return nil
 	}
 

roomserver/alias/alias.go

@@ -33,13 +33,16 @@ import (
 type RoomserverAliasAPIDatabase interface {
 	// Save a given room alias with the room ID it refers to.
 	// Returns an error if there was a problem talking to the database.
-	SetRoomAlias(ctx context.Context, alias string, roomID string) error
+	SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error
 	// Look up the room ID a given alias refers to.
 	// Returns an error if there was a problem talking to the database.
 	GetRoomIDForAlias(ctx context.Context, alias string) (string, error)
 	// Look up all aliases referring to a given room ID.
 	// Returns an error if there was a problem talking to the database.
 	GetAliasesForRoomID(ctx context.Context, roomID string) ([]string, error)
+	// Get the user ID of the creator of an alias.
+	// Returns an error if there was a problem talking to the database.
+	GetCreatorIDForAlias(ctx context.Context, alias string) (string, error)
 	// Remove a given room alias.
 	// Returns an error if there was a problem talking to the database.
 	RemoveRoomAlias(ctx context.Context, alias string) error
@@ -73,7 +76,7 @@ func (r *RoomserverAliasAPI) SetRoomAlias(
 	response.AliasExists = false
 
 	// Save the new alias
-	if err := r.DB.SetRoomAlias(ctx, request.Alias, request.RoomID); err != nil {
+	if err := r.DB.SetRoomAlias(ctx, request.Alias, request.RoomID, request.UserID); err != nil {
 		return err
 	}
 
@@ -133,6 +136,22 @@ func (r *RoomserverAliasAPI) GetAliasesForRoomID(
 	return nil
 }
 
+// GetCreatorIDForAlias implements alias.RoomserverAliasAPI
+func (r *RoomserverAliasAPI) GetCreatorIDForAlias(
+	ctx context.Context,
+	request *roomserverAPI.GetCreatorIDForAliasRequest,
+	response *roomserverAPI.GetCreatorIDForAliasResponse,
+) error {
+	// Look up the aliases in the database for the given RoomID
+	creatorID, err := r.DB.GetCreatorIDForAlias(ctx, request.Alias)
+	if err != nil {
+		return err
+	}
+
+	response.UserID = creatorID
+	return nil
+}
+
 // RemoveRoomAlias implements alias.RoomserverAliasAPI
 func (r *RoomserverAliasAPI) RemoveRoomAlias(
 	ctx context.Context,
@@ -277,6 +296,20 @@ func (r *RoomserverAliasAPI) SetupHTTP(servMux *http.ServeMux) {
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
+	servMux.Handle(
+		roomserverAPI.RoomserverGetCreatorIDForAliasPath,
+		common.MakeInternalAPI("GetCreatorIDForAlias", func(req *http.Request) util.JSONResponse {
+			var request roomserverAPI.GetCreatorIDForAliasRequest
+			var response roomserverAPI.GetCreatorIDForAliasResponse
+			if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
+				return util.ErrorResponse(err)
+			}
+			if err := r.GetCreatorIDForAlias(req.Context(), &request, &response); err != nil {
+				return util.ErrorResponse(err)
+			}
+			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
+		}),
+	)
 	servMux.Handle(
 		roomserverAPI.RoomserverGetAliasesForRoomIDPath,
 		common.MakeInternalAPI("getAliasesForRoomID", func(req *http.Request) util.JSONResponse {

roomserver/alias/alias_test.go

@@ -30,7 +30,7 @@ type MockRoomserverAliasAPIDatabase struct {
 }
 
 // These methods can be essentially noop
-func (db MockRoomserverAliasAPIDatabase) SetRoomAlias(ctx context.Context, alias string, roomID string) error {
+func (db MockRoomserverAliasAPIDatabase) SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error {
 	return nil
 }
 
@@ -43,6 +43,12 @@ func (db MockRoomserverAliasAPIDatabase) RemoveRoomAlias(ctx context.Context, al
 	return nil
 }
 
+func (db *MockRoomserverAliasAPIDatabase) GetCreatorIDForAlias(
+	ctx context.Context, alias string,
+) (string, error) {
+	return "", nil
+}
+
 // This method needs to change depending on test case
 func (db *MockRoomserverAliasAPIDatabase) GetRoomIDForAlias(
 	ctx context.Context,

roomserver/api/alias.go

@@ -62,6 +62,18 @@ type GetAliasesForRoomIDResponse struct {
 	Aliases []string `json:"aliases"`
 }
 
+// GetCreatorIDForAliasRequest is a request to GetCreatorIDForAlias
+type GetCreatorIDForAliasRequest struct {
+	// The alias we want to find the creator of
+	Alias string `json:"alias"`
+}
+
+// GetCreatorIDForAliasResponse is a response to GetCreatorIDForAlias
+type GetCreatorIDForAliasResponse struct {
+	// The user ID of the alias creator
+	UserID string `json:"user_id"`
+}
+
 // RemoveRoomAliasRequest is a request to RemoveRoomAlias
 type RemoveRoomAliasRequest struct {
 	// ID of the user removing the alias
@@ -96,6 +108,13 @@ type RoomserverAliasAPI interface {
 		response *GetAliasesForRoomIDResponse,
 	) error
 
+	// Get the user ID of the creator of an alias
+	GetCreatorIDForAlias(
+		ctx context.Context,
+		req *GetCreatorIDForAliasRequest,
+		response *GetCreatorIDForAliasResponse,
+	) error
+
 	// Remove a room alias
 	RemoveRoomAlias(
 		ctx context.Context,
@@ -113,6 +132,9 @@ const RoomserverGetRoomIDForAliasPath = "/api/roomserver/GetRoomIDForAlias"
 // RoomserverGetAliasesForRoomIDPath is the HTTP path for the GetAliasesForRoomID API.
 const RoomserverGetAliasesForRoomIDPath = "/api/roomserver/GetAliasesForRoomID"
 
+// RoomserverGetCreatorIDForAliasPath is the HTTP path for the GetCreatorIDForAlias API.
+const RoomserverGetCreatorIDForAliasPath = "/api/roomserver/GetCreatorIDForAlias"
+
 // RoomserverRemoveRoomAliasPath is the HTTP path for the RemoveRoomAlias API.
 const RoomserverRemoveRoomAliasPath = "/api/roomserver/removeRoomAlias"
 
@@ -169,6 +191,19 @@ func (h *httpRoomserverAliasAPI) GetAliasesForRoomID(
 	return commonHTTP.PostJSON(ctx, span, h.httpClient, apiURL, request, response)
 }
 
+// GetCreatorIDForAlias implements RoomserverAliasAPI
+func (h *httpRoomserverAliasAPI) GetCreatorIDForAlias(
+	ctx context.Context,
+	request *GetCreatorIDForAliasRequest,
+	response *GetCreatorIDForAliasResponse,
+) error {
+	span, ctx := opentracing.StartSpanFromContext(ctx, "GetCreatorIDForAlias")
+	defer span.Finish()
+
+	apiURL := h.roomserverURL + RoomserverGetCreatorIDForAliasPath
+	return commonHTTP.PostJSON(ctx, span, h.httpClient, apiURL, request, response)
+}
+
 // RemoveRoomAlias implements RoomserverAliasAPI
 func (h *httpRoomserverAliasAPI) RemoveRoomAlias(
 	ctx context.Context,

roomserver/auth/auth.go

@@ -23,7 +23,7 @@ func IsServerAllowed(
 ) bool {
 	for _, ev := range authEvents {
 		membership, err := ev.Membership()
-		if err != nil || membership != "join" {
+		if err != nil || membership != gomatrixserverlib.Join {
 			continue
 		}
 

roomserver/input/membership.go

@@ -23,13 +23,6 @@ import (
 	"github.com/matrix-org/gomatrixserverlib"
 )
 
-// Membership values
-// TODO: Factor these out somewhere sensible?
-const join = "join"
-const leave = "leave"
-const invite = "invite"
-const ban = "ban"
-
 // updateMembership updates the current membership and the invites for each
 // user affected by a change in the current state of the room.
 // Returns a list of output events to write to the kafka log to inform the
@@ -91,8 +84,8 @@ func updateMembership(
 ) ([]api.OutputEvent, error) {
 	var err error
 	// Default the membership to Leave if no event was added or removed.
-	oldMembership := leave
+	oldMembership := gomatrixserverlib.Leave
-	newMembership := leave
+	newMembership := gomatrixserverlib.Leave
 
 	if remove != nil {
 		oldMembership, err = remove.Membership()
@@ -106,7 +99,7 @@ func updateMembership(
 			return nil, err
 		}
 	}
-	if oldMembership == newMembership && newMembership != join {
+	if oldMembership == newMembership && newMembership != gomatrixserverlib.Join {
 		// If the membership is the same then nothing changed and we can return
 		// immediately, unless it's a Join update (e.g. profile update).
 		return updates, nil
@@ -118,11 +111,11 @@ func updateMembership(
 	}
 
 	switch newMembership {
-	case invite:
+	case gomatrixserverlib.Invite:
 		return updateToInviteMembership(mu, add, updates)
-	case join:
+	case gomatrixserverlib.Join:
 		return updateToJoinMembership(mu, add, updates)
-	case leave, ban:
+	case gomatrixserverlib.Leave, gomatrixserverlib.Ban:
 		return updateToLeaveMembership(mu, add, newMembership, updates)
 	default:
 		panic(fmt.Errorf(
@@ -183,7 +176,7 @@ func updateToJoinMembership(
 	for _, eventID := range retired {
 		orie := api.OutputRetireInviteEvent{
 			EventID:          eventID,
-			Membership:       join,
+			Membership:       gomatrixserverlib.Join,
 			RetiredByEventID: add.EventID(),
 			TargetUserID:     *add.StateKey(),
 		}

roomserver/query/query.go

@@ -359,7 +359,7 @@ func (r *RoomserverQueryAPI) getMembershipsBeforeEventNID(
 			return nil, err
 		}
 
-		if membership == "join" {
+		if membership == gomatrixserverlib.Join {
 			events = append(events, event)
 		}
 	}

roomserver/storage/room_aliases_table.go

@@ -25,14 +25,16 @@ CREATE TABLE IF NOT EXISTS roomserver_room_aliases (
     -- Alias of the room
     alias TEXT NOT NULL PRIMARY KEY,
     -- Room ID the alias refers to
-    room_id TEXT NOT NULL
+    room_id TEXT NOT NULL,
+    -- User ID of the creator of this alias
+    creator_id TEXT NOT NULL
 );
 
 CREATE INDEX IF NOT EXISTS roomserver_room_id_idx ON roomserver_room_aliases(room_id);
 `
 
 const insertRoomAliasSQL = "" +
-	"INSERT INTO roomserver_room_aliases (alias, room_id) VALUES ($1, $2)"
+	"INSERT INTO roomserver_room_aliases (alias, room_id, creator_id) VALUES ($1, $2, $3)"
 
 const selectRoomIDFromAliasSQL = "" +
 	"SELECT room_id FROM roomserver_room_aliases WHERE alias = $1"
@@ -40,6 +42,9 @@ const selectRoomIDFromAliasSQL = "" +
 const selectAliasesFromRoomIDSQL = "" +
 	"SELECT alias FROM roomserver_room_aliases WHERE room_id = $1"
 
+const selectCreatorIDFromAliasSQL = "" +
+	"SELECT creator_id FROM roomserver_room_aliases WHERE alias = $1"
+
 const deleteRoomAliasSQL = "" +
 	"DELETE FROM roomserver_room_aliases WHERE alias = $1"
 
@@ -47,6 +52,7 @@ type roomAliasesStatements struct {
 	insertRoomAliasStmt          *sql.Stmt
 	selectRoomIDFromAliasStmt    *sql.Stmt
 	selectAliasesFromRoomIDStmt  *sql.Stmt
+	selectCreatorIDFromAliasStmt *sql.Stmt
 	deleteRoomAliasStmt          *sql.Stmt
 }
 
@@ -59,14 +65,15 @@ func (s *roomAliasesStatements) prepare(db *sql.DB) (err error) {
 		{&s.insertRoomAliasStmt, insertRoomAliasSQL},
 		{&s.selectRoomIDFromAliasStmt, selectRoomIDFromAliasSQL},
 		{&s.selectAliasesFromRoomIDStmt, selectAliasesFromRoomIDSQL},
+		{&s.selectCreatorIDFromAliasStmt, selectCreatorIDFromAliasSQL},
 		{&s.deleteRoomAliasStmt, deleteRoomAliasSQL},
 	}.prepare(db)
 }
 
 func (s *roomAliasesStatements) insertRoomAlias(
-	ctx context.Context, alias string, roomID string,
+	ctx context.Context, alias string, roomID string, creatorUserID string,
 ) (err error) {
-	_, err = s.insertRoomAliasStmt.ExecContext(ctx, alias, roomID)
+	_, err = s.insertRoomAliasStmt.ExecContext(ctx, alias, roomID, creatorUserID)
 	return
 }
 
@@ -101,6 +108,16 @@ func (s *roomAliasesStatements) selectAliasesFromRoomID(
 	return
 }
 
+func (s *roomAliasesStatements) selectCreatorIDFromAlias(
+	ctx context.Context, alias string,
+) (creatorID string, err error) {
+	err = s.selectCreatorIDFromAliasStmt.QueryRowContext(ctx, alias).Scan(&creatorID)
+	if err == sql.ErrNoRows {
+		return "", nil
+	}
+	return
+}
+
 func (s *roomAliasesStatements) deleteRoomAlias(
 	ctx context.Context, alias string,
 ) (err error) {

roomserver/storage/storage.go

@@ -615,8 +615,8 @@ func (d *Database) GetInvitesForUser(
 }
 
 // SetRoomAlias implements alias.RoomserverAliasAPIDB
-func (d *Database) SetRoomAlias(ctx context.Context, alias string, roomID string) error {
+func (d *Database) SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error {
-	return d.statements.insertRoomAlias(ctx, alias, roomID)
+	return d.statements.insertRoomAlias(ctx, alias, roomID, creatorUserID)
 }
 
 // GetRoomIDForAlias implements alias.RoomserverAliasAPIDB
@@ -629,6 +629,13 @@ func (d *Database) GetAliasesForRoomID(ctx context.Context, roomID string) ([]st
 	return d.statements.selectAliasesFromRoomID(ctx, roomID)
 }
 
+// GetCreatorIDForAlias implements alias.RoomserverAliasAPIDB
+func (d *Database) GetCreatorIDForAlias(
+	ctx context.Context, alias string,
+) (string, error) {
+	return d.statements.selectCreatorIDFromAlias(ctx, alias)
+}
+
 // RemoveRoomAlias implements alias.RoomserverAliasAPIDB
 func (d *Database) RemoveRoomAlias(ctx context.Context, alias string) error {
 	return d.statements.deleteRoomAlias(ctx, alias)

syncapi/routing/state.go

@@ -44,7 +44,10 @@ func OnIncomingStateRequest(req *http.Request, db *storage.SyncServerDatasource,
 	// TODO(#287): Auth request and handle the case where the user has left (where
 	// we should return the state at the poin they left)
 
-	stateEvents, err := db.GetStateEventsForRoom(req.Context(), roomID)
+	stateFilterPart := gomatrixserverlib.DefaultFilterPart()
+	// TODO: stateFilterPart should not limit the number of state events (or only limits abusive number of events)
+
+	stateEvents, err := db.GetStateEventsForRoom(req.Context(), roomID, &stateFilterPart)
 	if err != nil {
 		return httputil.LogThenError(req, err)
 	}

syncapi/storage/account_data_table.go

@@ -18,7 +18,9 @@ import (
 	"context"
 	"database/sql"
 
+	"github.com/lib/pq"
 	"github.com/matrix-org/dendrite/common"
+	"github.com/matrix-org/gomatrixserverlib"
 )
 
 const accountDataSchema = `
@@ -41,7 +43,7 @@ CREATE TABLE IF NOT EXISTS syncapi_account_data_type (
     CONSTRAINT syncapi_account_data_unique UNIQUE (user_id, room_id, type)
 );
 
-CREATE UNIQUE INDEX IF NOT EXISTS syncapi_account_data_id_idx ON syncapi_account_data_type(id);
+CREATE UNIQUE INDEX IF NOT EXISTS syncapi_account_data_id_idx ON syncapi_account_data_type(id, type);
 `
 
 const insertAccountDataSQL = "" +
@@ -53,7 +55,9 @@ const insertAccountDataSQL = "" +
 const selectAccountDataInRangeSQL = "" +
 	"SELECT room_id, type FROM syncapi_account_data_type" +
 	" WHERE user_id = $1 AND id > $2 AND id <= $3" +
-	" ORDER BY id ASC"
+	" AND ( $4::text[] IS NULL OR     type LIKE ANY($4)  )" +
+	" AND ( $5::text[] IS NULL OR NOT(type LIKE ANY($5)) )" +
+	" ORDER BY id ASC LIMIT $6"
 
 const selectMaxAccountDataIDSQL = "" +
 	"SELECT MAX(id) FROM syncapi_account_data_type"
@@ -93,6 +97,7 @@ func (s *accountDataStatements) selectAccountDataInRange(
 	ctx context.Context,
 	userID string,
 	oldPos, newPos int64,
+	accountDataFilterPart *gomatrixserverlib.FilterPart,
 ) (data map[string][]string, err error) {
 	data = make(map[string][]string)
 
@@ -103,7 +108,11 @@ func (s *accountDataStatements) selectAccountDataInRange(
 		oldPos--
 	}
 
-	rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos)
+	rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos,
+		pq.StringArray(filterConvertTypeWildcardToSQL(accountDataFilterPart.Types)),
+		pq.StringArray(filterConvertTypeWildcardToSQL(accountDataFilterPart.NotTypes)),
+		accountDataFilterPart.Limit,
+	)
 	if err != nil {
 		return
 	}

syncapi/storage/current_room_state_table.go

@@ -17,6 +17,7 @@ package storage
 import (
 	"context"
 	"database/sql"
+	"encoding/json"
 
 	"github.com/lib/pq"
 	"github.com/matrix-org/dendrite/common"
@@ -32,6 +33,10 @@ CREATE TABLE IF NOT EXISTS syncapi_current_room_state (
     event_id TEXT NOT NULL,
     -- The state event type e.g 'm.room.member'
     type TEXT NOT NULL,
+    -- The 'sender' property of the event.
+    sender TEXT NOT NULL,
+	-- true if the event content contains a url key
+    contains_url BOOL NOT NULL,
     -- The state_key value for this state event e.g ''
     state_key TEXT NOT NULL,
     -- The JSON for the event. Stored as TEXT because this should be valid UTF-8.
@@ -46,16 +51,16 @@ CREATE TABLE IF NOT EXISTS syncapi_current_room_state (
     CONSTRAINT syncapi_room_state_unique UNIQUE (room_id, type, state_key)
 );
 -- for event deletion
-CREATE UNIQUE INDEX IF NOT EXISTS syncapi_event_id_idx ON syncapi_current_room_state(event_id);
+CREATE UNIQUE INDEX IF NOT EXISTS syncapi_event_id_idx ON syncapi_current_room_state(event_id, room_id, type, sender, contains_url);
 -- for querying membership states of users
 CREATE INDEX IF NOT EXISTS syncapi_membership_idx ON syncapi_current_room_state(type, state_key, membership) WHERE membership IS NOT NULL AND membership != 'leave';
 `
 
 const upsertRoomStateSQL = "" +
-	"INSERT INTO syncapi_current_room_state (room_id, event_id, type, state_key, event_json, membership, added_at)" +
+	"INSERT INTO syncapi_current_room_state (room_id, event_id, type, sender, contains_url, state_key, event_json, membership, added_at)" +
-	" VALUES ($1, $2, $3, $4, $5, $6, $7)" +
+	" VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)" +
 	" ON CONFLICT ON CONSTRAINT syncapi_room_state_unique" +
-	" DO UPDATE SET event_id = $2, event_json = $5, membership = $6, added_at = $7"
+	" DO UPDATE SET event_id = $2, sender=$4, contains_url=$5, event_json = $7, membership = $8, added_at = $9"
 
 const deleteRoomStateByEventIDSQL = "" +
 	"DELETE FROM syncapi_current_room_state WHERE event_id = $1"
@@ -64,7 +69,13 @@ const selectRoomIDsWithMembershipSQL = "" +
 	"SELECT room_id FROM syncapi_current_room_state WHERE type = 'm.room.member' AND state_key = $1 AND membership = $2"
 
 const selectCurrentStateSQL = "" +
-	"SELECT event_json FROM syncapi_current_room_state WHERE room_id = $1"
+	"SELECT event_json FROM syncapi_current_room_state WHERE room_id = $1" +
+	" AND ( $2::text[] IS NULL OR     sender  = ANY($2)  )" +
+	" AND ( $3::text[] IS NULL OR NOT(sender  = ANY($3)) )" +
+	" AND ( $4::text[] IS NULL OR     type LIKE ANY($4)  )" +
+	" AND ( $5::text[] IS NULL OR NOT(type LIKE ANY($5)) )" +
+	" AND ( $6::bool IS NULL   OR     contains_url = $6  )" +
+	" LIMIT $7"
 
 const selectJoinedUsersSQL = "" +
 	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join'"
@@ -166,9 +177,17 @@ func (s *currentRoomStateStatements) selectRoomIDsWithMembership(
 // CurrentState returns all the current state events for the given room.
 func (s *currentRoomStateStatements) selectCurrentState(
 	ctx context.Context, txn *sql.Tx, roomID string,
+	stateFilterPart *gomatrixserverlib.FilterPart,
 ) ([]gomatrixserverlib.Event, error) {
 	stmt := common.TxStmt(txn, s.selectCurrentStateStmt)
-	rows, err := stmt.QueryContext(ctx, roomID)
+	rows, err := stmt.QueryContext(ctx, roomID,
+		pq.StringArray(stateFilterPart.Senders),
+		pq.StringArray(stateFilterPart.NotSenders),
+		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
+		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.NotTypes)),
+		stateFilterPart.ContainsURL,
+		stateFilterPart.Limit,
+	)
 	if err != nil {
 		return nil, err
 	}
@@ -189,12 +208,23 @@ func (s *currentRoomStateStatements) upsertRoomState(
 	ctx context.Context, txn *sql.Tx,
 	event gomatrixserverlib.Event, membership *string, addedAt int64,
 ) error {
+	// Parse content as JSON and search for an "url" key
+	containsURL := false
+	var content map[string]interface{}
+	if json.Unmarshal(event.Content(), &content) != nil {
+		// Set containsURL to true if url is present
+		_, containsURL = content["url"]
+	}
+
+	// upsert state event
 	stmt := common.TxStmt(txn, s.upsertRoomStateStmt)
 	_, err := stmt.ExecContext(
 		ctx,
 		event.RoomID(),
 		event.EventID(),
 		event.Type(),
+		event.Sender(),
+		containsURL,
 		*event.StateKey(),
 		event.JSON(),
 		membership,

syncapi/storage/filtering.go

@@ -0,0 +1,36 @@
+// Copyright 2017 Thibaut CHARLES
+//
+// 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 storage
+
+import (
+	"strings"
+)
+
+// filterConvertWildcardToSQL converts wildcards as defined in
+// https://matrix.org/docs/spec/client_server/r0.3.0.html#post-matrix-client-r0-user-userid-filter
+// to SQL wildcards that can be used with LIKE()
+func filterConvertTypeWildcardToSQL(values []string) []string {
+	if values == nil {
+		// Return nil instead of []string{} so IS NULL can work correctly when
+		// the return value is passed into SQL queries
+		return nil
+	}
+
+	ret := make([]string, len(values))
+	for i := range values {
+		ret[i] = strings.Replace(values[i], "*", "%", -1)
+	}
+	return ret
+}

syncapi/storage/output_room_events_table.go

@@ -17,6 +17,7 @@ package storage
 import (
 	"context"
 	"database/sql"
+	"encoding/json"
 	"sort"
 
 	"github.com/matrix-org/dendrite/roomserver/api"
@@ -43,6 +44,12 @@ CREATE TABLE IF NOT EXISTS syncapi_output_room_events (
     room_id TEXT NOT NULL,
     -- The JSON for the event. Stored as TEXT because this should be valid UTF-8.
     event_json TEXT NOT NULL,
+    -- The event type e.g 'm.room.member'.
+    type TEXT NOT NULL,
+    -- The 'sender' property of the event.
+    sender TEXT NOT NULL,
+	-- true if the event content contains a url key.
+    contains_url BOOL NOT NULL,
     -- A list of event IDs which represent a delta of added/removed room state. This can be NULL
     -- if there is no delta.
     add_state_ids TEXT[],
@@ -56,8 +63,8 @@ CREATE UNIQUE INDEX IF NOT EXISTS syncapi_event_id_idx ON syncapi_output_room_ev
 
 const insertEventSQL = "" +
 	"INSERT INTO syncapi_output_room_events (" +
-	" room_id, event_id, event_json, add_state_ids, remove_state_ids, device_id, transaction_id" +
+	"room_id, event_id, event_json, type, sender, contains_url, add_state_ids, remove_state_ids, device_id, transaction_id" +
-	") VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING id"
+	") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id"
 
 const selectEventsSQL = "" +
 	"SELECT id, event_json, device_id, transaction_id" +
@@ -76,7 +83,13 @@ const selectStateInRangeSQL = "" +
 	"SELECT id, event_json, add_state_ids, remove_state_ids" +
 	" FROM syncapi_output_room_events" +
 	" WHERE (id > $1 AND id <= $2) AND (add_state_ids IS NOT NULL OR remove_state_ids IS NOT NULL)" +
-	" ORDER BY id ASC"
+	" AND ( $3::text[] IS NULL OR     sender  = ANY($3)  )" +
+	" AND ( $4::text[] IS NULL OR NOT(sender  = ANY($4)) )" +
+	" AND ( $5::text[] IS NULL OR     type LIKE ANY($5)  )" +
+	" AND ( $6::text[] IS NULL OR NOT(type LIKE ANY($6)) )" +
+	" AND ( $7::bool IS NULL   OR     contains_url = $7  )" +
+	" ORDER BY id ASC" +
+	" LIMIT $8"
 
 type outputRoomEventsStatements struct {
 	insertEventStmt        *sql.Stmt
@@ -114,10 +127,19 @@ func (s *outputRoomEventsStatements) prepare(db *sql.DB) (err error) {
 // two positions, only the most recent state is returned.
 func (s *outputRoomEventsStatements) selectStateInRange(
 	ctx context.Context, txn *sql.Tx, oldPos, newPos int64,
+	stateFilterPart *gomatrixserverlib.FilterPart,
 ) (map[string]map[string]bool, map[string]streamEvent, error) {
 	stmt := common.TxStmt(txn, s.selectStateInRangeStmt)
 
-	rows, err := stmt.QueryContext(ctx, oldPos, newPos)
+	rows, err := stmt.QueryContext(
+		ctx, oldPos, newPos,
+		pq.StringArray(stateFilterPart.Senders),
+		pq.StringArray(stateFilterPart.NotSenders),
+		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
+		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.NotTypes)),
+		stateFilterPart.ContainsURL,
+		stateFilterPart.Limit,
+	)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -205,12 +227,23 @@ func (s *outputRoomEventsStatements) insertEvent(
 		txnID = &transactionID.TransactionID
 	}
 
+	// Parse content as JSON and search for an "url" key
+	containsURL := false
+	var content map[string]interface{}
+	if json.Unmarshal(event.Content(), &content) != nil {
+		// Set containsURL to true if url is present
+		_, containsURL = content["url"]
+	}
+
 	stmt := common.TxStmt(txn, s.insertEventStmt)
 	err = stmt.QueryRowContext(
 		ctx,
 		event.RoomID(),
 		event.EventID(),
 		event.JSON(),
+		event.Type(),
+		event.Sender(),
+		containsURL,
 		pq.StringArray(addState),
 		pq.StringArray(removeState),
 		deviceID,

syncapi/storage/syncserver.go

@@ -35,12 +35,6 @@ import (
 	"github.com/matrix-org/gomatrixserverlib"
 )
 
-const (
-	membershipJoin  = "join"
-	membershipLeave = "leave"
-	membershipBan   = "ban"
-)
-
 type stateDelta struct {
 	roomID      string
 	stateEvents []gomatrixserverlib.Event
@@ -227,10 +221,10 @@ func (d *SyncServerDatasource) GetStateEvent(
 // Returns an empty slice if no state events could be found for this room.
 // Returns an error if there was an issue with the retrieval.
 func (d *SyncServerDatasource) GetStateEventsForRoom(
-	ctx context.Context, roomID string,
+	ctx context.Context, roomID string, stateFilterPart *gomatrixserverlib.FilterPart,
 ) (stateEvents []gomatrixserverlib.Event, err error) {
 	err = common.WithTransaction(d.db, func(txn *sql.Tx) error {
-		stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID)
+		stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID, stateFilterPart)
 		if err != nil {
 			return err
 		}
@@ -290,6 +284,8 @@ func (d *SyncServerDatasource) addPDUDeltaToResponse(
 	var succeeded bool
 	defer common.EndTransaction(txn, &succeeded)
 
+	stateFilterPart := gomatrixserverlib.DefaultFilterPart() // TODO: use filter provided in request
+
 	// Work out which rooms to return in the response. This is done by getting not only the currently
 	// joined rooms, but also which rooms have membership transitions for this user between the 2 PDU stream positions.
 	// This works out what the 'state' key should be for each room as well as which membership block
@@ -297,9 +293,13 @@ func (d *SyncServerDatasource) addPDUDeltaToResponse(
 	var deltas []stateDelta
 	var joinedRoomIDs []string
 	if !wantFullState {
-		deltas, joinedRoomIDs, err = d.getStateDeltas(ctx, &device, txn, fromPos, toPos, device.UserID)
+		deltas, joinedRoomIDs, err = d.getStateDeltas(
+			ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilterPart,
+		)
 	} else {
-		deltas, joinedRoomIDs, err = d.getStateDeltasForFullStateSync(ctx, &device, txn, fromPos, toPos, device.UserID)
+		deltas, joinedRoomIDs, err = d.getStateDeltasForFullStateSync(
+			ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilterPart,
+		)
 	}
 	if err != nil {
 		return nil, err
@@ -395,7 +395,7 @@ func (d *SyncServerDatasource) IncrementalSync(
 		)
 	} else {
 		joinedRoomIDs, err = d.roomstate.selectRoomIDsWithMembership(
-			ctx, nil, device.UserID, membershipJoin,
+			ctx, nil, device.UserID, gomatrixserverlib.Join,
 		)
 	}
 	if err != nil {
@@ -444,15 +444,17 @@ func (d *SyncServerDatasource) getResponseWithPDUsForCompleteSync(
 	res = types.NewResponse(toPos)
 
 	// Extract room state and recent events for all rooms the user is joined to.
-	joinedRoomIDs, err = d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, membershipJoin)
+	joinedRoomIDs, err = d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
 	if err != nil {
 		return
 	}
 
+	stateFilterPart := gomatrixserverlib.DefaultFilterPart() // TODO: use filter provided in request
+
 	// Build up a /sync response. Add joined rooms.
 	for _, roomID := range joinedRoomIDs {
 		var stateEvents []gomatrixserverlib.Event
-		stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID)
+		stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID, &stateFilterPart)
 		if err != nil {
 			return
 		}
@@ -541,8 +543,9 @@ var txReadOnlySnapshot = sql.TxOptions{
 // If there was an issue with the retrieval, returns an error
 func (d *SyncServerDatasource) GetAccountDataInRange(
 	ctx context.Context, userID string, oldPos, newPos int64,
+	accountDataFilterPart *gomatrixserverlib.FilterPart,
 ) (map[string][]string, error) {
-	return d.accountData.selectAccountDataInRange(ctx, userID, oldPos, newPos)
+	return d.accountData.selectAccountDataInRange(ctx, userID, oldPos, newPos, accountDataFilterPart)
 }
 
 // UpsertAccountData keeps track of new or updated account data, by saving the type
@@ -647,7 +650,7 @@ func (d *SyncServerDatasource) addRoomDeltaToResponse(
 	res *types.Response,
 ) error {
 	endPos := toPos
-	if delta.membershipPos > 0 && delta.membership == membershipLeave {
+	if delta.membershipPos > 0 && delta.membership == gomatrixserverlib.Leave {
 		// make sure we don't leak recent events after the leave event.
 		// TODO: History visibility makes this somewhat complex to handle correctly. For example:
 		// TODO: This doesn't work for join -> leave in a single /sync request (see events prior to join).
@@ -694,7 +697,7 @@ func (d *SyncServerDatasource) addRoomDeltaToResponse(
 	}
 
 	switch delta.membership {
-	case membershipJoin:
+	case gomatrixserverlib.Join:
 		jr := types.NewJoinResponse()
 		// Use the short form of batch token for prev_batch
 		jr.Timeline.PrevBatch = strconv.FormatInt(prevPDUPos, 10)
@@ -702,9 +705,9 @@ func (d *SyncServerDatasource) addRoomDeltaToResponse(
 		jr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
 		jr.State.Events = gomatrixserverlib.ToClientEvents(delta.stateEvents, gomatrixserverlib.FormatSync)
 		res.Rooms.Join[delta.roomID] = *jr
-	case membershipLeave:
+	case gomatrixserverlib.Leave:
 		fallthrough // transitions to leave are the same as ban
-	case membershipBan:
+	case gomatrixserverlib.Ban:
 		// TODO: recentEvents may contain events that this user is not allowed to see because they are
 		//       no longer in the room.
 		lr := types.NewLeaveResponse()
@@ -812,6 +815,7 @@ func (d *SyncServerDatasource) fetchMissingStateEvents(
 func (d *SyncServerDatasource) getStateDeltas(
 	ctx context.Context, device *authtypes.Device, txn *sql.Tx,
 	fromPos, toPos int64, userID string,
+	stateFilterPart *gomatrixserverlib.FilterPart,
 ) ([]stateDelta, []string, error) {
 	// Implement membership change algorithm: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L821
 	// - Get membership list changes for this user in this sync response
@@ -824,7 +828,7 @@ func (d *SyncServerDatasource) getStateDeltas(
 	var deltas []stateDelta
 
 	// get all the state events ever between these two positions
-	stateNeeded, eventMap, err := d.events.selectStateInRange(ctx, txn, fromPos, toPos)
+	stateNeeded, eventMap, err := d.events.selectStateInRange(ctx, txn, fromPos, toPos, stateFilterPart)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -841,10 +845,10 @@ func (d *SyncServerDatasource) getStateDeltas(
 			//       the 'state' part of the response though, so is transparent modulo bandwidth concerns as it is not added to
 			//       the timeline.
 			if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
-				if membership == membershipJoin {
+				if membership == gomatrixserverlib.Join {
 					// send full room state down instead of a delta
 					var s []streamEvent
-					s, err = d.currentStateStreamEventsForRoom(ctx, txn, roomID)
+					s, err = d.currentStateStreamEventsForRoom(ctx, txn, roomID, stateFilterPart)
 					if err != nil {
 						return nil, nil, err
 					}
@@ -864,13 +868,13 @@ func (d *SyncServerDatasource) getStateDeltas(
 	}
 
 	// Add in currently joined rooms
-	joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, membershipJoin)
+	joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
 	if err != nil {
 		return nil, nil, err
 	}
 	for _, joinedRoomID := range joinedRoomIDs {
 		deltas = append(deltas, stateDelta{
-			membership:  membershipJoin,
+			membership:  gomatrixserverlib.Join,
 			stateEvents: streamEventsToEvents(device, state[joinedRoomID]),
 			roomID:      joinedRoomID,
 		})
@@ -886,8 +890,9 @@ func (d *SyncServerDatasource) getStateDeltas(
 func (d *SyncServerDatasource) getStateDeltasForFullStateSync(
 	ctx context.Context, device *authtypes.Device, txn *sql.Tx,
 	fromPos, toPos int64, userID string,
+	stateFilterPart *gomatrixserverlib.FilterPart,
 ) ([]stateDelta, []string, error) {
-	joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, "join")
+	joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -897,19 +902,19 @@ func (d *SyncServerDatasource) getStateDeltasForFullStateSync(
 
 	// Add full states for all joined rooms
 	for _, joinedRoomID := range joinedRoomIDs {
-		s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, joinedRoomID)
+		s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, joinedRoomID, stateFilterPart)
 		if stateErr != nil {
 			return nil, nil, stateErr
 		}
 		deltas = append(deltas, stateDelta{
-			membership:  "join",
+			membership:  gomatrixserverlib.Join,
 			stateEvents: streamEventsToEvents(device, s),
 			roomID:      joinedRoomID,
 		})
 	}
 
 	// Get all the state events ever between these two positions
-	stateNeeded, eventMap, err := d.events.selectStateInRange(ctx, txn, fromPos, toPos)
+	stateNeeded, eventMap, err := d.events.selectStateInRange(ctx, txn, fromPos, toPos, stateFilterPart)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -921,7 +926,7 @@ func (d *SyncServerDatasource) getStateDeltasForFullStateSync(
 	for roomID, stateStreamEvents := range state {
 		for _, ev := range stateStreamEvents {
 			if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
-				if membership != "join" { // We've already added full state for all joined rooms above.
+				if membership != gomatrixserverlib.Join { // We've already added full state for all joined rooms above.
 					deltas = append(deltas, stateDelta{
 						membership:    membership,
 						membershipPos: ev.streamPosition,
@@ -940,8 +945,9 @@ func (d *SyncServerDatasource) getStateDeltasForFullStateSync(
 
 func (d *SyncServerDatasource) currentStateStreamEventsForRoom(
 	ctx context.Context, txn *sql.Tx, roomID string,
+	stateFilterPart *gomatrixserverlib.FilterPart,
 ) ([]streamEvent, error) {
-	allState, err := d.roomstate.selectCurrentState(ctx, txn, roomID)
+	allState, err := d.roomstate.selectCurrentState(ctx, txn, roomID, stateFilterPart)
 	if err != nil {
 		return nil, err
 	}

syncapi/sync/notifier.go

@@ -93,16 +93,16 @@ func (n *Notifier) OnNewEvent(
 			} else {
 				// Keep the joined user map up-to-date
 				switch membership {
-				case "invite":
+				case gomatrixserverlib.Invite:
 					usersToNotify = append(usersToNotify, targetUserID)
-				case "join":
+				case gomatrixserverlib.Join:
 					// Manually append the new user's ID so they get notified
 					// along all members in the room
 					usersToNotify = append(usersToNotify, targetUserID)
 					n.addJoinedUser(ev.RoomID(), targetUserID)
-				case "leave":
+				case gomatrixserverlib.Leave:
 					fallthrough
-				case "ban":
+				case gomatrixserverlib.Ban:
 					n.removeJoinedUser(ev.RoomID(), targetUserID)
 				}
 			}

syncapi/sync/requestpool.go

@@ -141,12 +141,14 @@ func (rp *RequestPool) currentSyncForUser(req syncRequest, latestPos types.SyncP
 		return
 	}
 
-	res, err = rp.appendAccountData(res, req.device.UserID, req, latestPos.PDUPosition)
+	accountDataFilter := gomatrixserverlib.DefaultFilterPart() // TODO: use filter provided in req instead
+	res, err = rp.appendAccountData(res, req.device.UserID, req, latestPos.PDUPosition, &accountDataFilter)
 	return
 }
 
 func (rp *RequestPool) appendAccountData(
 	data *types.Response, userID string, req syncRequest, currentPos int64,
+	accountDataFilter *gomatrixserverlib.FilterPart,
 ) (*types.Response, error) {
 	// TODO: Account data doesn't have a sync position of its own, meaning that
 	// account data might be sent multiple time to the client if multiple account
@@ -180,7 +182,7 @@ func (rp *RequestPool) appendAccountData(
 	}
 
 	// Sync is not initial, get all account data since the latest sync
-	dataTypes, err := rp.db.GetAccountDataInRange(req.ctx, userID, req.since.PDUPosition, currentPos)
+	dataTypes, err := rp.db.GetAccountDataInRange(req.ctx, userID, req.since.PDUPosition, currentPos, accountDataFilter)
 	if err != nil {
 		return nil, err
 	}

testfile

@@ -159,12 +159,17 @@ Inbound federation rejects remote attempts to kick local users to rooms
 An event which redacts itself should be ignored
 A pair of events which redact each other should be ignored
 Full state sync includes joined rooms
+A message sent after an initial sync appears in the timeline of an incremental sync.
 Can add tag
 Can remove tag
 Can list tags for a room
 Tags appear in an initial v2 /sync
 Newly updated tags appear in an incremental v2 /sync
 Deleted tags appear in an incremental v2 /sync
+/event/ on non world readable room does not work
+Outbound federation can query profile data
+/event/ on joined room works
+/event/ does not allow access to events before the user joined
 POST /rooms/:room_id/redact/:event_id as original message sender redacts message
 POST /rooms/:room_id/redact/:event_id as random user does not redact message
 POST /redact disallows redaction of event in different room