diff options
| -rw-r--r-- | changelog.d/11003.bugfix | 1 | ||||
| -rw-r--r-- | synapse/handlers/user_directory.py | 63 | ||||
| -rw-r--r-- | tests/handlers/test_user_directory.py | 71 |
3 files changed, 104 insertions, 31 deletions
diff --git a/changelog.d/11003.bugfix b/changelog.d/11003.bugfix new file mode 100644 index 0000000000..0786f1b886 --- /dev/null +++ b/changelog.d/11003.bugfix @@ -0,0 +1 @@ +Fix a long-standing bug where a user's per-room nickname/avatar would overwrite their profile in the user directory when a room was made public. \ No newline at end of file diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py index b7b1973346..8810f048ba 100644 --- a/synapse/handlers/user_directory.py +++ b/synapse/handlers/user_directory.py @@ -242,18 +242,15 @@ class UserDirectoryHandler(StateDeltasHandler): continue if change is MatchChange.now_true: # The user joined - event = await self.store.get_event(event_id, allow_none=True) - # It isn't expected for this event to not exist, but we - # don't want the entire background process to break. - if event is None: - continue - - profile = ProfileInfo( - avatar_url=event.content.get("avatar_url"), - display_name=event.content.get("displayname"), - ) - - await self._handle_new_user(room_id, state_key, profile) + # This may be the first time we've seen a remote user. If + # so, ensure we have a directory entry for them. (We don't + # need to do this for local users: their directory entry + # is created at the point of registration. + if is_remote: + await self._upsert_directory_entry_for_remote_user( + state_key, event_id + ) + await self._track_user_joined_room(room_id, state_key) else: # The user left await self._handle_remove_user(room_id, state_key) else: @@ -303,7 +300,7 @@ class UserDirectoryHandler(StateDeltasHandler): room_id ) - logger.debug("Change: %r, publicness: %r", publicness, is_public) + logger.debug("Publicness change: %r, is_public: %r", publicness, is_public) if publicness is MatchChange.now_true and not is_public: # If we became world readable but room isn't currently public then @@ -314,42 +311,50 @@ class UserDirectoryHandler(StateDeltasHandler): # ignore the change return - other_users_in_room_with_profiles = ( - await self.store.get_users_in_room_with_profiles(room_id) - ) + users_in_room = await self.store.get_users_in_room(room_id) # Remove every user from the sharing tables for that room. - for user_id in other_users_in_room_with_profiles.keys(): + for user_id in users_in_room: await self.store.remove_user_who_share_room(user_id, room_id) # Then, re-add them to the tables. - # NOTE: this is not the most efficient method, as handle_new_user sets + # NOTE: this is not the most efficient method, as _track_user_joined_room sets # up local_user -> other_user and other_user_whos_local -> local_user, # which when ran over an entire room, will result in the same values # being added multiple times. The batching upserts shouldn't make this # too bad, though. - for user_id, profile in other_users_in_room_with_profiles.items(): - await self._handle_new_user(room_id, user_id, profile) + for user_id in users_in_room: + await self._track_user_joined_room(room_id, user_id) - async def _handle_new_user( - self, room_id: str, user_id: str, profile: ProfileInfo + async def _upsert_directory_entry_for_remote_user( + self, user_id: str, event_id: str ) -> None: - """Called when we might need to add user to directory - - Args: - room_id: The room ID that user joined or started being public - user_id + """A remote user has just joined a room. Ensure they have an entry in + the user directory. The caller is responsible for making sure they're + remote. """ + event = await self.store.get_event(event_id, allow_none=True) + # It isn't expected for this event to not exist, but we + # don't want the entire background process to break. + if event is None: + return + logger.debug("Adding new user to dir, %r", user_id) await self.store.update_profile_in_user_dir( - user_id, profile.display_name, profile.avatar_url + user_id, event.content.get("displayname"), event.content.get("avatar_url") ) + async def _track_user_joined_room(self, room_id: str, user_id: str) -> None: + """Someone's just joined a room. Update `users_in_public_rooms` or + `users_who_share_private_rooms` as appropriate. + + The caller is responsible for ensuring that the given user is not excluded + from the user directory. + """ is_public = await self.store.is_room_world_readable_or_publicly_joinable( room_id ) - # Now we update users who share rooms with users. other_users_in_room = await self.store.get_users_in_room(room_id) if is_public: diff --git a/tests/handlers/test_user_directory.py b/tests/handlers/test_user_directory.py index 47217f0542..db65253773 100644 --- a/tests/handlers/test_user_directory.py +++ b/tests/handlers/test_user_directory.py @@ -372,8 +372,6 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase): # Alice makes two rooms. Bob joins one of them. room1 = self.helper.create_room_as(alice, tok=alice_token) room2 = self.helper.create_room_as(alice, tok=alice_token) - print("room1=", room1) - print("room2=", room2) self.helper.join(room1, bob, tok=bob_token) # The user sharing tables should have been updated. @@ -436,6 +434,75 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase): 0, ) + def test_making_room_public_doesnt_alter_directory_entry(self) -> None: + """Per-room names shouldn't go to the directory when the room becomes public. + + This isn't about preventing a leak (the room is now public, so the nickname + is too). It's about preserving the invariant that we only show a user's public + profile in the user directory results. + + I made this a Synapse test case rather than a Complement one because + I think this is (strictly speaking) an implementation choice. Synapse + has chosen to only ever use the public profile when responding to a user + directory search. There's no privacy leak here, because making the room + public discloses the per-room name. + + The spec doesn't mandate anything about _how_ a user + should appear in a /user_directory/search result. Hypothetical example: + suppose Bob searches for Alice. When representing Alice in a search + result, it's reasonable to use any of Alice's nicknames that Bob is + aware of. Heck, maybe we even want to use lots of them in a combined + displayname like `Alice (aka "ali", "ally", "41iC3")`. + """ + + # TODO the same should apply when Alice is a remote user. + alice = self.register_user("alice", "pass") + alice_token = self.login(alice, "pass") + bob = self.register_user("bob", "pass") + bob_token = self.login(bob, "pass") + + # Alice and Bob are in a private room. + room = self.helper.create_room_as(alice, is_public=False, tok=alice_token) + self.helper.invite(room, src=alice, targ=bob, tok=alice_token) + self.helper.join(room, user=bob, tok=bob_token) + + # Alice has a nickname unique to that room. + + self.helper.send_state( + room, + "m.room.member", + { + "displayname": "Freddy Mercury", + "membership": "join", + }, + alice_token, + state_key=alice, + ) + + # Check Alice isn't recorded as being in a public room. + public = self.get_success(self.user_dir_helper.get_users_in_public_rooms()) + self.assertNotIn((alice, room), public) + + # One of them makes the room public. + self.helper.send_state( + room, + "m.room.join_rules", + {"join_rule": "public"}, + alice_token, + ) + + # Check that Alice is now recorded as being in a public room + public = self.get_success(self.user_dir_helper.get_users_in_public_rooms()) + self.assertIn((alice, room), public) + + # Alice's display name remains the same in the user directory. + search_result = self.get_success(self.handler.search_users(bob, alice, 10)) + self.assertEqual( + search_result["results"], + [{"display_name": "alice", "avatar_url": None, "user_id": alice}], + 0, + ) + def test_private_room(self) -> None: """ A user can be searched for only by people that are either in a public |