diff options
Diffstat (limited to 'setup/mscs/msc2946/msc2946.go')
| -rw-r--r-- | setup/mscs/msc2946/msc2946.go | 744 |
1 files changed, 0 insertions, 744 deletions
diff --git a/setup/mscs/msc2946/msc2946.go b/setup/mscs/msc2946/msc2946.go deleted file mode 100644 index 3e5ffda9..00000000 --- a/setup/mscs/msc2946/msc2946.go +++ /dev/null @@ -1,744 +0,0 @@ -// Copyright 2021 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 msc2946 'Spaces Summary' implements https://github.com/matrix-org/matrix-doc/pull/2946 -package msc2946 - -import ( - "context" - "encoding/json" - "net/http" - "net/url" - "sort" - "strconv" - "strings" - "sync" - "time" - - "github.com/google/uuid" - "github.com/gorilla/mux" - fs "github.com/matrix-org/dendrite/federationapi/api" - "github.com/matrix-org/dendrite/internal/caching" - "github.com/matrix-org/dendrite/internal/httputil" - roomserver "github.com/matrix-org/dendrite/roomserver/api" - "github.com/matrix-org/dendrite/roomserver/types" - "github.com/matrix-org/dendrite/setup/config" - userapi "github.com/matrix-org/dendrite/userapi/api" - "github.com/matrix-org/gomatrixserverlib" - "github.com/matrix-org/gomatrixserverlib/fclient" - "github.com/matrix-org/gomatrixserverlib/spec" - "github.com/matrix-org/util" - "github.com/tidwall/gjson" -) - -const ( - ConstCreateEventContentKey = "type" - ConstCreateEventContentValueSpace = "m.space" - ConstSpaceChildEventType = "m.space.child" - ConstSpaceParentEventType = "m.space.parent" -) - -type MSC2946ClientResponse struct { - Rooms []fclient.MSC2946Room `json:"rooms"` - NextBatch string `json:"next_batch,omitempty"` -} - -// Enable this MSC -func Enable( - cfg *config.Dendrite, routers httputil.Routers, rsAPI roomserver.RoomserverInternalAPI, userAPI userapi.UserInternalAPI, - fsAPI fs.FederationInternalAPI, keyRing gomatrixserverlib.JSONVerifier, cache caching.SpaceSummaryRoomsCache, -) error { - clientAPI := httputil.MakeAuthAPI("spaces", userAPI, spacesHandler(rsAPI, fsAPI, cache, cfg.Global.ServerName), httputil.WithAllowGuests()) - routers.Client.Handle("/v1/rooms/{roomID}/hierarchy", clientAPI).Methods(http.MethodGet, http.MethodOptions) - routers.Client.Handle("/unstable/org.matrix.msc2946/rooms/{roomID}/hierarchy", clientAPI).Methods(http.MethodGet, http.MethodOptions) - - fedAPI := httputil.MakeExternalAPI( - "msc2946_fed_spaces", func(req *http.Request) util.JSONResponse { - fedReq, errResp := fclient.VerifyHTTPRequest( - req, time.Now(), cfg.Global.ServerName, cfg.Global.IsLocalServerName, keyRing, - ) - if fedReq == nil { - return errResp - } - // Extract the room ID from the request. Sanity check request data. - params, err := httputil.URLDecodeMapValues(mux.Vars(req)) - if err != nil { - return util.ErrorResponse(err) - } - roomID := params["roomID"] - return federatedSpacesHandler(req.Context(), fedReq, roomID, cache, rsAPI, fsAPI, cfg.Global.ServerName) - }, - ) - routers.Federation.Handle("/unstable/org.matrix.msc2946/hierarchy/{roomID}", fedAPI).Methods(http.MethodGet) - routers.Federation.Handle("/v1/hierarchy/{roomID}", fedAPI).Methods(http.MethodGet) - return nil -} - -func federatedSpacesHandler( - ctx context.Context, fedReq *fclient.FederationRequest, roomID string, - cache caching.SpaceSummaryRoomsCache, - rsAPI roomserver.RoomserverInternalAPI, fsAPI fs.FederationInternalAPI, - thisServer spec.ServerName, -) util.JSONResponse { - u, err := url.Parse(fedReq.RequestURI()) - if err != nil { - return util.JSONResponse{ - Code: 400, - JSON: spec.InvalidParam("bad request uri"), - } - } - - w := walker{ - rootRoomID: roomID, - serverName: fedReq.Origin(), - thisServer: thisServer, - ctx: ctx, - cache: cache, - suggestedOnly: u.Query().Get("suggested_only") == "true", - limit: 1000, - // The main difference is that it does not recurse into spaces and does not support pagination. - // This is somewhat equivalent to a Client-Server request with a max_depth=1. - maxDepth: 1, - - rsAPI: rsAPI, - fsAPI: fsAPI, - // inline cache as we don't have pagination in federation mode - paginationCache: make(map[string]paginationInfo), - } - return w.walk() -} - -func spacesHandler( - rsAPI roomserver.RoomserverInternalAPI, - fsAPI fs.FederationInternalAPI, - cache caching.SpaceSummaryRoomsCache, - thisServer spec.ServerName, -) func(*http.Request, *userapi.Device) util.JSONResponse { - // declared outside the returned handler so it persists between calls - // TODO: clear based on... time? - paginationCache := make(map[string]paginationInfo) - - return func(req *http.Request, device *userapi.Device) util.JSONResponse { - // Extract the room ID from the request. Sanity check request data. - params, err := httputil.URLDecodeMapValues(mux.Vars(req)) - if err != nil { - return util.ErrorResponse(err) - } - roomID := params["roomID"] - w := walker{ - suggestedOnly: req.URL.Query().Get("suggested_only") == "true", - limit: parseInt(req.URL.Query().Get("limit"), 1000), - maxDepth: parseInt(req.URL.Query().Get("max_depth"), -1), - paginationToken: req.URL.Query().Get("from"), - rootRoomID: roomID, - caller: device, - thisServer: thisServer, - ctx: req.Context(), - cache: cache, - - rsAPI: rsAPI, - fsAPI: fsAPI, - paginationCache: paginationCache, - } - return w.walk() - } -} - -type paginationInfo struct { - processed set - unvisited []roomVisit -} - -type walker struct { - rootRoomID string - caller *userapi.Device - serverName spec.ServerName - thisServer spec.ServerName - rsAPI roomserver.RoomserverInternalAPI - fsAPI fs.FederationInternalAPI - ctx context.Context - cache caching.SpaceSummaryRoomsCache - suggestedOnly bool - limit int - maxDepth int - paginationToken string - - paginationCache map[string]paginationInfo - mu sync.Mutex -} - -func (w *walker) newPaginationCache() (string, paginationInfo) { - p := paginationInfo{ - processed: make(set), - unvisited: nil, - } - tok := uuid.NewString() - return tok, p -} - -func (w *walker) loadPaginationCache(paginationToken string) *paginationInfo { - w.mu.Lock() - defer w.mu.Unlock() - p := w.paginationCache[paginationToken] - return &p -} - -func (w *walker) storePaginationCache(paginationToken string, cache paginationInfo) { - w.mu.Lock() - defer w.mu.Unlock() - w.paginationCache[paginationToken] = cache -} - -type roomVisit struct { - roomID string - parentRoomID string - depth int - vias []string // vias to query this room by -} - -func (w *walker) walk() util.JSONResponse { - if authorised, _ := w.authorised(w.rootRoomID, ""); !authorised { - if w.caller != nil { - // CS API format - return util.JSONResponse{ - Code: 403, - JSON: spec.Forbidden("room is unknown/forbidden"), - } - } else { - // SS API format - return util.JSONResponse{ - Code: 404, - JSON: spec.NotFound("room is unknown/forbidden"), - } - } - } - - var discoveredRooms []fclient.MSC2946Room - - var cache *paginationInfo - if w.paginationToken != "" { - cache = w.loadPaginationCache(w.paginationToken) - if cache == nil { - return util.JSONResponse{ - Code: 400, - JSON: spec.InvalidParam("invalid from"), - } - } - } else { - tok, c := w.newPaginationCache() - cache = &c - w.paginationToken = tok - // Begin walking the graph starting with the room ID in the request in a queue of unvisited rooms - c.unvisited = append(c.unvisited, roomVisit{ - roomID: w.rootRoomID, - parentRoomID: "", - depth: 0, - }) - } - - processed := cache.processed - unvisited := cache.unvisited - - // Depth first -> stack data structure - for len(unvisited) > 0 { - if len(discoveredRooms) >= w.limit { - break - } - - // pop the stack - rv := unvisited[len(unvisited)-1] - unvisited = unvisited[:len(unvisited)-1] - // If this room has already been processed, skip. - // If this room exceeds the specified depth, skip. - if processed.isSet(rv.roomID) || rv.roomID == "" || (w.maxDepth > 0 && rv.depth > w.maxDepth) { - continue - } - - // Mark this room as processed. - processed.set(rv.roomID) - - // if this room is not a space room, skip. - var roomType string - create := w.stateEvent(rv.roomID, spec.MRoomCreate, "") - if create != nil { - // escape the `.`s so gjson doesn't think it's nested - roomType = gjson.GetBytes(create.Content(), strings.ReplaceAll(ConstCreateEventContentKey, ".", `\.`)).Str - } - - // Collect rooms/events to send back (either locally or fetched via federation) - var discoveredChildEvents []fclient.MSC2946StrippedEvent - - // If we know about this room and the caller is authorised (joined/world_readable) then pull - // events locally - roomExists := w.roomExists(rv.roomID) - if !roomExists { - // attempt to query this room over federation, as either we've never heard of it before - // or we've left it and hence are not authorised (but info may be exposed regardless) - fedRes := w.federatedRoomInfo(rv.roomID, rv.vias) - if fedRes != nil { - discoveredChildEvents = fedRes.Room.ChildrenState - discoveredRooms = append(discoveredRooms, fedRes.Room) - if len(fedRes.Children) > 0 { - discoveredRooms = append(discoveredRooms, fedRes.Children...) - } - // mark this room as a space room as the federated server responded. - // we need to do this so we add the children of this room to the unvisited stack - // as these children may be rooms we do know about. - roomType = ConstCreateEventContentValueSpace - } - } else if authorised, isJoinedOrInvited := w.authorised(rv.roomID, rv.parentRoomID); authorised { - // Get all `m.space.child` state events for this room - events, err := w.childReferences(rv.roomID) - if err != nil { - util.GetLogger(w.ctx).WithError(err).WithField("room_id", rv.roomID).Error("failed to extract references for room") - continue - } - discoveredChildEvents = events - - pubRoom := w.publicRoomsChunk(rv.roomID) - - discoveredRooms = append(discoveredRooms, fclient.MSC2946Room{ - PublicRoom: *pubRoom, - RoomType: roomType, - ChildrenState: events, - }) - // don't walk children if the user is not joined/invited to the space - if !isJoinedOrInvited { - continue - } - } else { - // room exists but user is not authorised - continue - } - - // don't walk the children - // if the parent is not a space room - if roomType != ConstCreateEventContentValueSpace { - continue - } - - // For each referenced room ID in the child events being returned to the caller - // add the room ID to the queue of unvisited rooms. Loop from the beginning. - // We need to invert the order here because the child events are lo->hi on the timestamp, - // so we need to ensure we pop in the same lo->hi order, which won't be the case if we - // insert the highest timestamp last in a stack. - for i := len(discoveredChildEvents) - 1; i >= 0; i-- { - spaceContent := struct { - Via []string `json:"via"` - }{} - ev := discoveredChildEvents[i] - _ = json.Unmarshal(ev.Content, &spaceContent) - unvisited = append(unvisited, roomVisit{ - roomID: ev.StateKey, - parentRoomID: rv.roomID, - depth: rv.depth + 1, - vias: spaceContent.Via, - }) - } - } - - if len(unvisited) > 0 { - // we still have more rooms so we need to send back a pagination token, - // we probably hit a room limit - cache.processed = processed - cache.unvisited = unvisited - w.storePaginationCache(w.paginationToken, *cache) - } else { - // clear the pagination token so we don't send it back to the client - // Note we do NOT nuke the cache just in case this response is lost - // and the client retries it. - w.paginationToken = "" - } - - if w.caller != nil { - // return CS API format - return util.JSONResponse{ - Code: 200, - JSON: MSC2946ClientResponse{ - Rooms: discoveredRooms, - NextBatch: w.paginationToken, - }, - } - } - // return SS API format - // the first discovered room will be the room asked for, and subsequent ones the depth=1 children - if len(discoveredRooms) == 0 { - return util.JSONResponse{ - Code: 404, - JSON: spec.NotFound("room is unknown/forbidden"), - } - } - return util.JSONResponse{ - Code: 200, - JSON: fclient.MSC2946SpacesResponse{ - Room: discoveredRooms[0], - Children: discoveredRooms[1:], - }, - } -} - -func (w *walker) stateEvent(roomID, evType, stateKey string) *types.HeaderedEvent { - var queryRes roomserver.QueryCurrentStateResponse - tuple := gomatrixserverlib.StateKeyTuple{ - EventType: evType, - StateKey: stateKey, - } - err := w.rsAPI.QueryCurrentState(w.ctx, &roomserver.QueryCurrentStateRequest{ - RoomID: roomID, - StateTuples: []gomatrixserverlib.StateKeyTuple{tuple}, - }, &queryRes) - if err != nil { - return nil - } - return queryRes.StateEvents[tuple] -} - -func (w *walker) publicRoomsChunk(roomID string) *fclient.PublicRoom { - pubRooms, err := roomserver.PopulatePublicRooms(w.ctx, []string{roomID}, w.rsAPI) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Error("failed to PopulatePublicRooms") - return nil - } - if len(pubRooms) == 0 { - return nil - } - return &pubRooms[0] -} - -// federatedRoomInfo returns more of the spaces graph from another server. Returns nil if this was -// unsuccessful. -func (w *walker) federatedRoomInfo(roomID string, vias []string) *fclient.MSC2946SpacesResponse { - // only do federated requests for client requests - if w.caller == nil { - return nil - } - resp, ok := w.cache.GetSpaceSummary(roomID) - if ok { - util.GetLogger(w.ctx).Debugf("Returning cached response for %s", roomID) - return &resp - } - util.GetLogger(w.ctx).Debugf("Querying %s via %+v", roomID, vias) - ctx := context.Background() - // query more of the spaces graph using these servers - for _, serverName := range vias { - if serverName == string(w.thisServer) { - continue - } - res, err := w.fsAPI.MSC2946Spaces(ctx, w.thisServer, spec.ServerName(serverName), roomID, w.suggestedOnly) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Warnf("failed to call MSC2946Spaces on server %s", serverName) - continue - } - // ensure nil slices are empty as we send this to the client sometimes - if res.Room.ChildrenState == nil { - res.Room.ChildrenState = []fclient.MSC2946StrippedEvent{} - } - for i := 0; i < len(res.Children); i++ { - child := res.Children[i] - if child.ChildrenState == nil { - child.ChildrenState = []fclient.MSC2946StrippedEvent{} - } - res.Children[i] = child - } - w.cache.StoreSpaceSummary(roomID, res) - - return &res - } - return nil -} - -func (w *walker) roomExists(roomID string) bool { - var queryRes roomserver.QueryServerJoinedToRoomResponse - err := w.rsAPI.QueryServerJoinedToRoom(w.ctx, &roomserver.QueryServerJoinedToRoomRequest{ - RoomID: roomID, - ServerName: w.thisServer, - }, &queryRes) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Error("failed to QueryServerJoinedToRoom") - return false - } - // if the room exists but we aren't in the room then we might have stale data so we want to fetch - // it fresh via federation - return queryRes.RoomExists && queryRes.IsInRoom -} - -// authorised returns true iff the user is joined this room or the room is world_readable -func (w *walker) authorised(roomID, parentRoomID string) (authed, isJoinedOrInvited bool) { - if w.caller != nil { - return w.authorisedUser(roomID, parentRoomID) - } - return w.authorisedServer(roomID), false -} - -// authorisedServer returns true iff the server is joined this room or the room is world_readable, public, or knockable -func (w *walker) authorisedServer(roomID string) bool { - // Check history visibility / join rules first - hisVisTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomHistoryVisibility, - StateKey: "", - } - joinRuleTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomJoinRules, - StateKey: "", - } - var queryRoomRes roomserver.QueryCurrentStateResponse - err := w.rsAPI.QueryCurrentState(w.ctx, &roomserver.QueryCurrentStateRequest{ - RoomID: roomID, - StateTuples: []gomatrixserverlib.StateKeyTuple{ - hisVisTuple, joinRuleTuple, - }, - }, &queryRoomRes) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Error("failed to QueryCurrentState") - return false - } - hisVisEv := queryRoomRes.StateEvents[hisVisTuple] - if hisVisEv != nil { - hisVis, _ := hisVisEv.HistoryVisibility() - if hisVis == "world_readable" { - return true - } - } - - // check if this room is a restricted room and if so, we need to check if the server is joined to an allowed room ID - // in addition to the actual room ID (but always do the actual one first as it's quicker in the common case) - allowJoinedToRoomIDs := []string{roomID} - joinRuleEv := queryRoomRes.StateEvents[joinRuleTuple] - - if joinRuleEv != nil { - rule, ruleErr := joinRuleEv.JoinRule() - if ruleErr != nil { - util.GetLogger(w.ctx).WithError(ruleErr).WithField("parent_room_id", roomID).Warn("failed to get join rule") - return false - } - - if rule == spec.Public || rule == spec.Knock { - return true - } - - if rule == spec.Restricted { - allowJoinedToRoomIDs = append(allowJoinedToRoomIDs, w.restrictedJoinRuleAllowedRooms(joinRuleEv, "m.room_membership")...) - } - } - - // check if server is joined to any allowed room - for _, allowedRoomID := range allowJoinedToRoomIDs { - var queryRes fs.QueryJoinedHostServerNamesInRoomResponse - err = w.fsAPI.QueryJoinedHostServerNamesInRoom(w.ctx, &fs.QueryJoinedHostServerNamesInRoomRequest{ - RoomID: allowedRoomID, - }, &queryRes) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Error("failed to QueryJoinedHostServerNamesInRoom") - continue - } - for _, srv := range queryRes.ServerNames { - if srv == w.serverName { - return true - } - } - } - - return false -} - -// authorisedUser returns true iff the user is invited/joined this room or the room is world_readable -// or if the room has a public or knock join rule. -// Failing that, if the room has a restricted join rule and belongs to the space parent listed, it will return true. -func (w *walker) authorisedUser(roomID, parentRoomID string) (authed bool, isJoinedOrInvited bool) { - hisVisTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomHistoryVisibility, - StateKey: "", - } - joinRuleTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomJoinRules, - StateKey: "", - } - roomMemberTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomMember, - StateKey: w.caller.UserID, - } - var queryRes roomserver.QueryCurrentStateResponse - err := w.rsAPI.QueryCurrentState(w.ctx, &roomserver.QueryCurrentStateRequest{ - RoomID: roomID, - StateTuples: []gomatrixserverlib.StateKeyTuple{ - hisVisTuple, joinRuleTuple, roomMemberTuple, - }, - }, &queryRes) - if err != nil { - util.GetLogger(w.ctx).WithError(err).Error("failed to QueryCurrentState") - return false, false - } - memberEv := queryRes.StateEvents[roomMemberTuple] - if memberEv != nil { - membership, _ := memberEv.Membership() - if membership == spec.Join || membership == spec.Invite { - return true, true - } - } - hisVisEv := queryRes.StateEvents[hisVisTuple] - if hisVisEv != nil { - hisVis, _ := hisVisEv.HistoryVisibility() - if hisVis == "world_readable" { - return true, false - } - } - joinRuleEv := queryRes.StateEvents[joinRuleTuple] - if parentRoomID != "" && joinRuleEv != nil { - var allowed bool - rule, ruleErr := joinRuleEv.JoinRule() - if ruleErr != nil { - util.GetLogger(w.ctx).WithError(ruleErr).WithField("parent_room_id", parentRoomID).Warn("failed to get join rule") - } else if rule == spec.Public || rule == spec.Knock { - allowed = true - } else if rule == spec.Restricted { - allowedRoomIDs := w.restrictedJoinRuleAllowedRooms(joinRuleEv, "m.room_membership") - // check parent is in the allowed set - for _, a := range allowedRoomIDs { - if parentRoomID == a { - allowed = true - break - } - } - } - if allowed { - // ensure caller is joined to the parent room - var queryRes2 roomserver.QueryCurrentStateResponse - err = w.rsAPI.QueryCurrentState(w.ctx, &roomserver.QueryCurrentStateRequest{ - RoomID: parentRoomID, - StateTuples: []gomatrixserverlib.StateKeyTuple{ - roomMemberTuple, - }, - }, &queryRes2) - if err != nil { - util.GetLogger(w.ctx).WithError(err).WithField("parent_room_id", parentRoomID).Warn("failed to check user is joined to parent room") - } else { - memberEv = queryRes2.StateEvents[roomMemberTuple] - if memberEv != nil { - membership, _ := memberEv.Membership() - if membership == spec.Join { - return true, false - } - } - } - } - } - return false, false -} - -func (w *walker) restrictedJoinRuleAllowedRooms(joinRuleEv *types.HeaderedEvent, allowType string) (allows []string) { - rule, _ := joinRuleEv.JoinRule() - if rule != spec.Restricted { - return nil - } - var jrContent gomatrixserverlib.JoinRuleContent - if err := json.Unmarshal(joinRuleEv.Content(), &jrContent); err != nil { - util.GetLogger(w.ctx).Warnf("failed to check join_rule on room %s: %s", joinRuleEv.RoomID(), err) - return nil - } - for _, allow := range jrContent.Allow { - if allow.Type == allowType { - allows = append(allows, allow.RoomID) - } - } - return -} - -// references returns all child references pointing to or from this room. -func (w *walker) childReferences(roomID string) ([]fclient.MSC2946StrippedEvent, error) { - createTuple := gomatrixserverlib.StateKeyTuple{ - EventType: spec.MRoomCreate, - StateKey: "", - } - var res roomserver.QueryCurrentStateResponse - err := w.rsAPI.QueryCurrentState(context.Background(), &roomserver.QueryCurrentStateRequest{ - RoomID: roomID, - AllowWildcards: true, - StateTuples: []gomatrixserverlib.StateKeyTuple{ - createTuple, { - EventType: ConstSpaceChildEventType, - StateKey: "*", - }, - }, - }, &res) - if err != nil { - return nil, err - } - - // don't return any child refs if the room is not a space room - if res.StateEvents[createTuple] != nil { - // escape the `.`s so gjson doesn't think it's nested - roomType := gjson.GetBytes(res.StateEvents[createTuple].Content(), strings.ReplaceAll(ConstCreateEventContentKey, ".", `\.`)).Str - if roomType != ConstCreateEventContentValueSpace { - return []fclient.MSC2946StrippedEvent{}, nil - } - } - delete(res.StateEvents, createTuple) - - el := make([]fclient.MSC2946StrippedEvent, 0, len(res.StateEvents)) - for _, ev := range res.StateEvents { - content := gjson.ParseBytes(ev.Content()) - // only return events that have a `via` key as per MSC1772 - // else we'll incorrectly walk redacted events (as the link - // is in the state_key) - if content.Get("via").Exists() { - strip := stripped(ev.PDU) - if strip == nil { - continue - } - // if suggested only and this child isn't suggested, skip it. - // if suggested only = false we include everything so don't need to check the content. - if w.suggestedOnly && !content.Get("suggested").Bool() { - continue - } - el = append(el, *strip) - } - } - // sort by origin_server_ts as per MSC2946 - sort.Slice(el, func(i, j int) bool { - return el[i].OriginServerTS < el[j].OriginServerTS - }) - - return el, nil -} - -type set map[string]struct{} - -func (s set) set(val string) { - s[val] = struct{}{} -} -func (s set) isSet(val string) bool { - _, ok := s[val] - return ok -} - -func stripped(ev gomatrixserverlib.PDU) *fclient.MSC2946StrippedEvent { - if ev.StateKey() == nil { - return nil - } - return &fclient.MSC2946StrippedEvent{ - Type: ev.Type(), - StateKey: *ev.StateKey(), - Content: ev.Content(), - Sender: string(ev.SenderID()), - OriginServerTS: ev.OriginServerTS(), - } -} - -func parseInt(intstr string, defaultVal int) int { - i, err := strconv.ParseInt(intstr, 10, 32) - if err != nil { - return defaultVal - } - return int(i) -} |