diff options
Diffstat (limited to 'synapse/handlers/room_member.py')
| -rw-r--r-- | synapse/handlers/room_member.py | 130 |
1 files changed, 90 insertions, 40 deletions
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 8b17632fdc..ba49075a20 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -85,6 +85,12 @@ class RoomMemberHandler(BaseHandler): prev_event_ids=prev_event_ids, ) + # Check if this event matches the previous membership event for the user. + duplicate = yield msg_handler.deduplicate_state_event(event, context) + if duplicate is not None: + # Discard the new event since this membership change is a no-op. + return + yield msg_handler.handle_new_client_event( requester, event, @@ -93,20 +99,26 @@ class RoomMemberHandler(BaseHandler): ratelimit=ratelimit, ) - prev_member_event = context.current_state.get( + prev_member_event_id = context.prev_state_ids.get( (EventTypes.Member, target.to_string()), None ) if event.membership == Membership.JOIN: - if not prev_member_event or prev_member_event.membership != Membership.JOIN: - # Only fire user_joined_room if the user has acutally joined the - # room. Don't bother if the user is just changing their profile - # info. + # Only fire user_joined_room if the user has acutally joined the + # room. Don't bother if the user is just changing their profile + # info. + newly_joined = True + if prev_member_event_id: + prev_member_event = yield self.store.get_event(prev_member_event_id) + newly_joined = prev_member_event.membership != Membership.JOIN + if newly_joined: yield user_joined_room(self.distributor, target, room_id) elif event.membership == Membership.LEAVE: - if prev_member_event and prev_member_event.membership == Membership.JOIN: - user_left_room(self.distributor, target, room_id) + if prev_member_event_id: + prev_member_event = yield self.store.get_event(prev_member_event_id) + if prev_member_event.membership == Membership.JOIN: + user_left_room(self.distributor, target, room_id) @defer.inlineCallbacks def remote_join(self, remote_room_hosts, room_id, user, content): @@ -195,29 +207,32 @@ class RoomMemberHandler(BaseHandler): remote_room_hosts = [] latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id) - current_state = yield self.state_handler.get_current_state( + current_state_ids = yield self.state_handler.get_current_state_ids( room_id, latest_event_ids=latest_event_ids, ) - old_state = current_state.get((EventTypes.Member, target.to_string())) - old_membership = old_state.content.get("membership") if old_state else None - if action == "unban" and old_membership != "ban": - raise SynapseError( - 403, - "Cannot unban user who was not banned (membership=%s)" % old_membership, - errcode=Codes.BAD_STATE - ) - if old_membership == "ban" and action != "unban": - raise SynapseError( - 403, - "Cannot %s user who was banned" % (action,), - errcode=Codes.BAD_STATE - ) + old_state_id = current_state_ids.get((EventTypes.Member, target.to_string())) + if old_state_id: + old_state = yield self.store.get_event(old_state_id, allow_none=True) + old_membership = old_state.content.get("membership") if old_state else None + if action == "unban" and old_membership != "ban": + raise SynapseError( + 403, + "Cannot unban user who was not banned" + " (membership=%s)" % old_membership, + errcode=Codes.BAD_STATE + ) + if old_membership == "ban" and action != "unban": + raise SynapseError( + 403, + "Cannot %s user who was banned" % (action,), + errcode=Codes.BAD_STATE + ) - is_host_in_room = self.is_host_in_room(current_state) + is_host_in_room = yield self._is_host_in_room(current_state_ids) if effective_membership_state == Membership.JOIN: - if requester.is_guest and not self._can_guest_join(current_state): + if requester.is_guest and not self._can_guest_join(current_state_ids): # This should be an auth check, but guests are a local concept, # so don't really fit into the general auth process. raise AuthError(403, "Guest access not allowed") @@ -326,15 +341,17 @@ class RoomMemberHandler(BaseHandler): requester = synapse.types.create_requester(target_user) message_handler = self.hs.get_handlers().message_handler - prev_event = message_handler.deduplicate_state_event(event, context) + prev_event = yield message_handler.deduplicate_state_event(event, context) if prev_event is not None: return if event.membership == Membership.JOIN: - if requester.is_guest and not self._can_guest_join(context.current_state): - # This should be an auth check, but guests are a local concept, - # so don't really fit into the general auth process. - raise AuthError(403, "Guest access not allowed") + if requester.is_guest: + guest_can_join = yield self._can_guest_join(context.prev_state_ids) + if not guest_can_join: + # This should be an auth check, but guests are a local concept, + # so don't really fit into the general auth process. + raise AuthError(403, "Guest access not allowed") yield message_handler.handle_new_client_event( requester, @@ -344,27 +361,39 @@ class RoomMemberHandler(BaseHandler): ratelimit=ratelimit, ) - prev_member_event = context.current_state.get( - (EventTypes.Member, target_user.to_string()), + prev_member_event_id = context.prev_state_ids.get( + (EventTypes.Member, event.state_key), None ) if event.membership == Membership.JOIN: - if not prev_member_event or prev_member_event.membership != Membership.JOIN: - # Only fire user_joined_room if the user has acutally joined the - # room. Don't bother if the user is just changing their profile - # info. + # Only fire user_joined_room if the user has acutally joined the + # room. Don't bother if the user is just changing their profile + # info. + newly_joined = True + if prev_member_event_id: + prev_member_event = yield self.store.get_event(prev_member_event_id) + newly_joined = prev_member_event.membership != Membership.JOIN + if newly_joined: yield user_joined_room(self.distributor, target_user, room_id) elif event.membership == Membership.LEAVE: - if prev_member_event and prev_member_event.membership == Membership.JOIN: - user_left_room(self.distributor, target_user, room_id) + if prev_member_event_id: + prev_member_event = yield self.store.get_event(prev_member_event_id) + if prev_member_event.membership == Membership.JOIN: + user_left_room(self.distributor, target_user, room_id) - def _can_guest_join(self, current_state): + @defer.inlineCallbacks + def _can_guest_join(self, current_state_ids): """ Returns whether a guest can join a room based on its current state. """ - guest_access = current_state.get((EventTypes.GuestAccess, ""), None) - return ( + guest_access_id = current_state_ids.get((EventTypes.GuestAccess, ""), None) + if not guest_access_id: + defer.returnValue(False) + + guest_access = yield self.store.get_event(guest_access_id) + + defer.returnValue( guest_access and guest_access.content and "guest_access" in guest_access.content @@ -683,3 +712,24 @@ class RoomMemberHandler(BaseHandler): if membership: yield self.store.forget(user_id, room_id) + + @defer.inlineCallbacks + def _is_host_in_room(self, current_state_ids): + # Have we just created the room, and is this about to be the very + # first member event? + create_event_id = current_state_ids.get(("m.room.create", "")) + if len(current_state_ids) == 1 and create_event_id: + defer.returnValue(self.hs.is_mine_id(create_event_id)) + + for (etype, state_key), event_id in current_state_ids.items(): + if etype != EventTypes.Member or not self.hs.is_mine_id(state_key): + continue + + event = yield self.store.get_event(event_id, allow_none=True) + if not event: + continue + + if event.membership == Membership.JOIN: + defer.returnValue(True) + + defer.returnValue(False) |