diff options
Diffstat (limited to 'synapse/handlers/sync.py')
| -rw-r--r-- | synapse/handlers/sync.py | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 5293fa4d0e..e75fc6b947 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -1191,7 +1191,9 @@ class SyncHandler: room_id: The partial state room to find the remaining memberships for. members_to_fetch: The memberships to find. events_with_membership_auth: A mapping from user IDs to events whose auth - events are known to contain their membership. + events would contain their prior membership, if one exists. + Note that join events will not cite a prior membership if a user has + never been in a room before. found_state_ids: A dict from (type, state_key) -> state_event_id, containing memberships that have been previously found. Entries in `members_to_fetch` that have a membership in `found_state_ids` are @@ -1201,6 +1203,10 @@ class SyncHandler: A dict from ("m.room.member", state_key) -> state_event_id, containing the memberships missing from `found_state_ids`. + When `events_with_membership_auth` contains a join event for a given user + which does not cite a prior membership, no membership is returned for that + user. + Raises: KeyError: if `events_with_membership_auth` does not have an entry for a missing membership. Memberships in `found_state_ids` do not need an @@ -1218,8 +1224,18 @@ class SyncHandler: if (EventTypes.Member, member) in found_state_ids: continue - missing_members.add(member) event_with_membership_auth = events_with_membership_auth[member] + is_join = ( + event_with_membership_auth.is_state() + and event_with_membership_auth.type == EventTypes.Member + and event_with_membership_auth.state_key == member + and event_with_membership_auth.content.get("membership") + == Membership.JOIN + ) + if not is_join: + # The event must include the desired membership as an auth event, unless + # it's the first join event for a given user. + missing_members.add(member) auth_event_ids.update(event_with_membership_auth.auth_event_ids()) auth_events = await self.store.get_events(auth_event_ids) @@ -1243,7 +1259,7 @@ class SyncHandler: auth_event.type == EventTypes.Member and auth_event.state_key == member ): - missing_members.remove(member) + missing_members.discard(member) additional_state_ids[ (EventTypes.Member, member) ] = auth_event.event_id |