diff --git a/changelog.d/17164.bugfix b/changelog.d/17164.bugfix new file mode 100644 index 0000000000..597e2f14b0 --- /dev/null +++ b/changelog.d/17164.bugfix @@ -0,0 +1 @@ +Fix deduplicating of membership events to not create unused state groups. diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index ccaa5508ff..de5bd44a5f 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -496,13 +496,6 @@ class EventCreationHandler: self.room_prejoin_state_types = self.hs.config.api.room_prejoin_state - self.membership_types_to_include_profile_data_in = { - Membership.JOIN, - Membership.KNOCK, - } - if self.hs.config.server.include_profile_data_on_invite: - self.membership_types_to_include_profile_data_in.add(Membership.INVITE) - self.send_event = ReplicationSendEventRestServlet.make_client(hs) self.send_events = ReplicationSendEventsRestServlet.make_client(hs) @@ -594,8 +587,6 @@ class EventCreationHandler: Creates an FrozenEvent object, filling out auth_events, prev_events, etc. - Adds display names to Join membership events. - Args: requester event_dict: An entire event @@ -672,29 +663,6 @@ class EventCreationHandler: self.validator.validate_builder(builder) - if builder.type == EventTypes.Member: - membership = builder.content.get("membership", None) - target = UserID.from_string(builder.state_key) - - if membership in self.membership_types_to_include_profile_data_in: - # If event doesn't include a display name, add one. - profile = self.profile_handler - content = builder.content - - try: - if "displayname" not in content: - displayname = await profile.get_displayname(target) - if displayname is not None: - content["displayname"] = displayname - if "avatar_url" not in content: - avatar_url = await profile.get_avatar_url(target) - if avatar_url is not None: - content["avatar_url"] = avatar_url - except Exception as e: - logger.info( - "Failed to get profile information for %r: %s", target, e - ) - is_exempt = await self._is_exempt_from_privacy_policy(builder, requester) if require_consent and not is_exempt: await self.assert_accepted_privacy_policy(requester) diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 655c78e150..51b9772329 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -106,6 +106,13 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): self.event_auth_handler = hs.get_event_auth_handler() self._worker_lock_handler = hs.get_worker_locks_handler() + self._membership_types_to_include_profile_data_in = { + Membership.JOIN, + Membership.KNOCK, + } + if self.hs.config.server.include_profile_data_on_invite: + self._membership_types_to_include_profile_data_in.add(Membership.INVITE) + self.member_linearizer: Linearizer = Linearizer(name="member") self.member_as_limiter = Linearizer(max_count=10, name="member_as_limiter") @@ -785,9 +792,8 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): if ( not self.allow_per_room_profiles and not is_requester_server_notices_user ) or requester.shadow_banned: - # Strip profile data, knowing that new profile data will be added to the - # event's content in event_creation_handler.create_event() using the target's - # global profile. + # Strip profile data, knowing that new profile data will be added to + # the event's content below using the target's global profile. content.pop("displayname", None) content.pop("avatar_url", None) @@ -823,6 +829,29 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): if action in ["kick", "unban"]: effective_membership_state = "leave" + if effective_membership_state not in Membership.LIST: + raise SynapseError(400, "Invalid membership key") + + # Add profile data for joins etc, if no per-room profile. + if ( + effective_membership_state + in self._membership_types_to_include_profile_data_in + ): + # If event doesn't include a display name, add one. + profile = self.profile_handler + + try: + if "displayname" not in content: + displayname = await profile.get_displayname(target) + if displayname is not None: + content["displayname"] = displayname + if "avatar_url" not in content: + avatar_url = await profile.get_avatar_url(target) + if avatar_url is not None: + content["avatar_url"] = avatar_url + except Exception as e: + logger.info("Failed to get profile information for %r: %s", target, e) + # if this is a join with a 3pid signature, we may need to turn a 3pid # invite into a normal invite before we can handle the join. if third_party_signed is not None: diff --git a/tests/handlers/test_room_member.py b/tests/handlers/test_room_member.py index df43ce581c..213a66ed1a 100644 --- a/tests/handlers/test_room_member.py +++ b/tests/handlers/test_room_member.py @@ -407,3 +407,24 @@ class RoomMemberMasterHandlerTestCase(HomeserverTestCase): self.assertFalse( self.get_success(self.store.did_forget(self.alice, self.room_id)) ) + + def test_deduplicate_joins(self) -> None: + """ + Test that calling /join multiple times does not store a new state group. + """ + + self.helper.join(self.room_id, user=self.bob, tok=self.bob_token) + + sql = "SELECT COUNT(*) FROM state_groups WHERE room_id = ?" + rows = self.get_success( + self.store.db_pool.execute("test_deduplicate_joins", sql, self.room_id) + ) + initial_count = rows[0][0] + + self.helper.join(self.room_id, user=self.bob, tok=self.bob_token) + rows = self.get_success( + self.store.db_pool.execute("test_deduplicate_joins", sql, self.room_id) + ) + new_count = rows[0][0] + + self.assertEqual(initial_count, new_count)