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https://github.com/1f349/dendrite.git
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Set historyVisibility for backfilled events over federation (#2656)
This should hopefully deflake Backfill works correctly with history visibility set to joined as we were using the default shared visibility, even if the events are set to joined (or something else)
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parent
5cacca92d2
commit
365da70a23
@ -5,9 +5,10 @@ import (
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"fmt"
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"net/http"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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)
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type PerformErrorCode int
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@ -161,7 +162,8 @@ func (r *PerformBackfillRequest) PrevEventIDs() []string {
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// PerformBackfillResponse is a response to PerformBackfill.
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type PerformBackfillResponse struct {
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// Missing events, arbritrary order.
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Events []*gomatrixserverlib.HeaderedEvent `json:"events"`
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Events []*gomatrixserverlib.HeaderedEvent `json:"events"`
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HistoryVisibility gomatrixserverlib.HistoryVisibility `json:"history_visibility"`
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}
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type PerformPublishRequest struct {
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@ -164,6 +164,7 @@ func (r *Backfiller) backfillViaFederation(ctx context.Context, req *api.Perform
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// TODO: update backwards extremities, as that should be moved from syncapi to roomserver at some point.
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res.Events = events
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res.HistoryVisibility = requester.historyVisiblity
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return nil
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}
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@ -248,6 +249,7 @@ type backfillRequester struct {
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servers []gomatrixserverlib.ServerName
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eventIDToBeforeStateIDs map[string][]string
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eventIDMap map[string]*gomatrixserverlib.Event
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historyVisiblity gomatrixserverlib.HistoryVisibility
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}
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func newBackfillRequester(
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@ -266,6 +268,7 @@ func newBackfillRequester(
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eventIDMap: make(map[string]*gomatrixserverlib.Event),
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bwExtrems: bwExtrems,
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preferServer: preferServer,
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historyVisiblity: gomatrixserverlib.HistoryVisibilityShared,
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}
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}
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@ -447,7 +450,8 @@ FindSuccessor:
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}
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// possibly return all joined servers depending on history visiblity
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memberEventsFromVis, err := joinEventsFromHistoryVisibility(ctx, b.db, roomID, stateEntries, b.thisServer)
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memberEventsFromVis, visibility, err := joinEventsFromHistoryVisibility(ctx, b.db, roomID, stateEntries, b.thisServer)
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b.historyVisiblity = visibility
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if err != nil {
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logrus.WithError(err).Error("ServersAtEvent: failed calculate servers from history visibility rules")
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return nil
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@ -528,7 +532,7 @@ func (b *backfillRequester) ProvideEvents(roomVer gomatrixserverlib.RoomVersion,
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// pull all events and then filter by that table.
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func joinEventsFromHistoryVisibility(
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ctx context.Context, db storage.Database, roomID string, stateEntries []types.StateEntry,
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thisServer gomatrixserverlib.ServerName) ([]types.Event, error) {
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thisServer gomatrixserverlib.ServerName) ([]types.Event, gomatrixserverlib.HistoryVisibility, error) {
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var eventNIDs []types.EventNID
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for _, entry := range stateEntries {
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@ -542,7 +546,9 @@ func joinEventsFromHistoryVisibility(
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// Get all of the events in this state
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stateEvents, err := db.Events(ctx, eventNIDs)
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if err != nil {
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return nil, err
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// even though the default should be shared, restricting the visibility to joined
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// feels more secure here.
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return nil, gomatrixserverlib.HistoryVisibilityJoined, err
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}
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events := make([]*gomatrixserverlib.Event, len(stateEvents))
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for i := range stateEvents {
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@ -551,20 +557,22 @@ func joinEventsFromHistoryVisibility(
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// Can we see events in the room?
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canSeeEvents := auth.IsServerAllowed(thisServer, true, events)
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visibility := gomatrixserverlib.HistoryVisibility(auth.HistoryVisibilityForRoom(events))
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if !canSeeEvents {
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logrus.Infof("ServersAtEvent history not visible to us: %s", auth.HistoryVisibilityForRoom(events))
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return nil, nil
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logrus.Infof("ServersAtEvent history not visible to us: %s", visibility)
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return nil, visibility, nil
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}
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// get joined members
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info, err := db.RoomInfo(ctx, roomID)
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if err != nil {
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return nil, err
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return nil, visibility, nil
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}
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joinEventNIDs, err := db.GetMembershipEventNIDsForRoom(ctx, info.RoomNID, true, false)
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if err != nil {
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return nil, err
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return nil, visibility, err
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}
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return db.Events(ctx, joinEventNIDs)
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evs, err := db.Events(ctx, joinEventNIDs)
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return evs, visibility, err
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}
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func persistEvents(ctx context.Context, db storage.Database, events []*gomatrixserverlib.HeaderedEvent) (types.RoomNID, map[string]types.Event) {
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@ -350,8 +350,10 @@ func (r *messagesReq) retrieveEvents() (
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startTime := time.Now()
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filteredEvents, err := internal.ApplyHistoryVisibilityFilter(r.ctx, r.db, r.rsAPI, events, nil, r.device.UserID, "messages")
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logrus.WithFields(logrus.Fields{
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"duration": time.Since(startTime),
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"room_id": r.roomID,
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"duration": time.Since(startTime),
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"room_id": r.roomID,
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"events_before": len(events),
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"events_after": len(filteredEvents),
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}).Debug("applied history visibility (messages)")
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return gomatrixserverlib.HeaderedToClientEvents(filteredEvents, gomatrixserverlib.FormatAll), start, end, err
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}
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@ -513,6 +515,9 @@ func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]
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// Store the events in the database, while marking them as unfit to show
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// up in responses to sync requests.
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if res.HistoryVisibility == "" {
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res.HistoryVisibility = gomatrixserverlib.HistoryVisibilityShared
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}
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for i := range res.Events {
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_, err = r.db.WriteEvent(
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context.Background(),
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@ -521,7 +526,7 @@ func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]
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[]string{},
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[]string{},
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nil, true,
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gomatrixserverlib.HistoryVisibilityShared,
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res.HistoryVisibility,
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)
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if err != nil {
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return nil, err
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@ -534,6 +539,9 @@ func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]
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// last `limit` events
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events = events[len(events)-limit:]
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}
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for _, ev := range events {
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ev.Visibility = res.HistoryVisibility
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}
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return events, nil
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}
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