diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/handlers/room_member.py | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 5a40e8c144..78586a0a1e 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -469,26 +469,39 @@ class RoomMemberHandler(object): user_id=target.to_string(), room_id=room_id ) # type: Optional[RoomsForUser] if not invite: + logger.info( + "%s sent a leave request to %s, but that is not an active room " + "on this server, and there is no pending invite", + target, + room_id, + ) + raise SynapseError(404, "Not a known room") logger.info( "%s rejects invite to %s from %s", target, room_id, invite.sender ) - if self.hs.is_mine_id(invite.sender): - # the inviter was on our server, but has now left. Carry on - # with the normal rejection codepath. - # - # This is a bit of a hack, because the room might still be - # active on other servers. - pass - else: + if not self.hs.is_mine_id(invite.sender): # send the rejection to the inviter's HS (with fallback to # local event) return await self.remote_reject_invite( invite.event_id, txn_id, requester, content, ) + # the inviter was on our server, but has now left. Carry on + # with the normal rejection codepath, which will also send the + # rejection out to any other servers we believe are still in the room. + + # thanks to overzealous cleaning up of event_forward_extremities in + # `delete_old_current_state_events`, it's possible to end up with no + # forward extremities here. If that happens, let's just hang the + # rejection off the invite event. + # + # see: https://github.com/matrix-org/synapse/issues/7139 + if len(latest_event_ids) == 0: + latest_event_ids = [invite.event_id] + return await self._local_membership_update( requester=requester, target=target, |