1f349/dendrite
4
0
Fork 0
mirror of https://github.com/1f349/dendrite.git synced 2024-11-22 11:41:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix Dendrite not backfilling on world_readable rooms (#1575)

Browse Source 
The previous implementation was only checking if room history was
"shared", which it wasn't for rooms where a user was invited, or world
readable rooms.
This implementation leverages the IsServerAllowed method, which already
implements the complete verification algorithm.

Signed-off-by: `Mayeul Cantan <oss+matrix@mayeul.net>`

Co-authored-by: Kegsay <kegan@matrix.org>
This commit is contained in:
Mayeul Cantan 2020-11-16 11:47:16 +01:00 committed by GitHub
parent 41c0b5acfb
commit af41fcadc4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
roomserver/internal/perform/perform_backfill.go
View File

@ -426,7 +426,7 @@ FindSuccessor:
} }
// possibly return all joined servers depending on history visiblity // possibly return all joined servers depending on history visiblity
memberEventsFromVis, err := joinEventsFromHistoryVisibility(ctx, b.db, roomID, stateEntries) memberEventsFromVis, err := joinEventsFromHistoryVisibility(ctx, b.db, roomID, stateEntries, b.thisServer)
if err != nil { if err != nil {
logrus.WithError(err).Error("ServersAtEvent: failed calculate servers from history visibility rules") logrus.WithError(err).Error("ServersAtEvent: failed calculate servers from history visibility rules")
return nil return nil
@ -501,11 +501,12 @@ func (b *backfillRequester) ProvideEvents(roomVer gomatrixserverlib.RoomVersion,
return events, nil return events, nil
} }
// joinEventsFromHistoryVisibility returns all CURRENTLY joined members if the provided state indicated a 'shared' history visibility. // joinEventsFromHistoryVisibility returns all CURRENTLY joined members if our server can read the room history
// TODO: Long term we probably want a history_visibility table which stores eventNID | visibility_enum so we can just // TODO: Long term we probably want a history_visibility table which stores eventNID | visibility_enum so we can just
// pull all events and then filter by that table. // pull all events and then filter by that table.
func joinEventsFromHistoryVisibility( func joinEventsFromHistoryVisibility(
ctx context.Context, db storage.Database, roomID string, stateEntries []types.StateEntry) ([]types.Event, error) { ctx context.Context, db storage.Database, roomID string, stateEntries []types.StateEntry,
thisServer gomatrixserverlib.ServerName) ([]types.Event, error) {
var eventNIDs []types.EventNID var eventNIDs []types.EventNID
for _, entry := range stateEntries { for _, entry := range stateEntries {
@ -525,9 +526,11 @@ func joinEventsFromHistoryVisibility(
for i := range stateEvents { for i := range stateEvents {
events[i] = stateEvents[i].Event events[i] = stateEvents[i].Event
} }
visibility := auth.HistoryVisibilityForRoom(events)
if visibility != "shared" { // Can we see events in the room?
logrus.Infof("ServersAtEvent history visibility not shared: %s", visibility) canSeeEvents := auth.IsServerAllowed(thisServer, true, events)
if !canSeeEvents {
logrus.Infof("ServersAtEvent history not visible to us: %s", auth.HistoryVisibilityForRoom(events))
return nil, nil return nil, nil
} }
// get joined members // get joined members