diff options
| -rw-r--r-- | changelog.d/8463.misc | 1 | ||||
| -rw-r--r-- | synapse/handlers/message.py | 134 | ||||
| -rw-r--r-- | synapse/handlers/room.py | 5 | ||||
| -rw-r--r-- | synapse/handlers/room_member.py | 29 | ||||
| -rw-r--r-- | tests/handlers/test_register.py | 2 | ||||
| -rw-r--r-- | tests/unittest.py | 4 |
6 files changed, 83 insertions, 92 deletions
diff --git a/changelog.d/8463.misc b/changelog.d/8463.misc new file mode 100644 index 0000000000..040c9bb90f --- /dev/null +++ b/changelog.d/8463.misc @@ -0,0 +1 @@ +Reduce inconsistencies between codepaths for membership and non-membership events. diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 00513fbf37..3e9a22e8f3 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -635,61 +635,6 @@ class EventCreationHandler: msg = self._block_events_without_consent_error % {"consent_uri": consent_uri} raise ConsentNotGivenError(msg=msg, consent_uri=consent_uri) - async def send_nonmember_event( - self, - requester: Requester, - event: EventBase, - context: EventContext, - ratelimit: bool = True, - ignore_shadow_ban: bool = False, - ) -> int: - """ - Persists and notifies local clients and federation of an event. - - Args: - requester: The requester sending the event. - event: The event to send. - context: The context of the event. - ratelimit: Whether to rate limit this send. - ignore_shadow_ban: True if shadow-banned users should be allowed to - send this event. - - Return: - The stream_id of the persisted event. - - Raises: - ShadowBanError if the requester has been shadow-banned. - """ - if event.type == EventTypes.Member: - raise SynapseError( - 500, "Tried to send member event through non-member codepath" - ) - - if not ignore_shadow_ban and requester.shadow_banned: - # We randomly sleep a bit just to annoy the requester. - await self.clock.sleep(random.randint(1, 10)) - raise ShadowBanError() - - user = UserID.from_string(event.sender) - - assert self.hs.is_mine(user), "User must be our own: %s" % (user,) - - if event.is_state(): - prev_event = await self.deduplicate_state_event(event, context) - if prev_event is not None: - logger.info( - "Not bothering to persist state event %s duplicated by %s", - event.event_id, - prev_event.event_id, - ) - # we know it was persisted, so must have a stream ordering - assert prev_event.internal_metadata.stream_ordering - return prev_event.internal_metadata.stream_ordering - - return await self.handle_new_client_event( - requester=requester, event=event, context=context, ratelimit=ratelimit - ) - async def deduplicate_state_event( self, event: EventBase, context: EventContext ) -> Optional[EventBase]: @@ -730,7 +675,7 @@ class EventCreationHandler: """ Creates an event, then sends it. - See self.create_event and self.send_nonmember_event. + See self.create_event and self.handle_new_client_event. Args: requester: The requester sending the event. @@ -740,9 +685,19 @@ class EventCreationHandler: ignore_shadow_ban: True if shadow-banned users should be allowed to send this event. + Returns: + The event, and its stream ordering (if state event deduplication happened, + the previous, duplicate event). + Raises: ShadowBanError if the requester has been shadow-banned. """ + + if event_dict["type"] == EventTypes.Member: + raise SynapseError( + 500, "Tried to send member event through non-member codepath" + ) + if not ignore_shadow_ban and requester.shadow_banned: # We randomly sleep a bit just to annoy the requester. await self.clock.sleep(random.randint(1, 10)) @@ -758,20 +713,27 @@ class EventCreationHandler: requester, event_dict, token_id=requester.access_token_id, txn_id=txn_id ) + assert self.hs.is_mine_id(event.sender), "User must be our own: %s" % ( + event.sender, + ) + spam_error = self.spam_checker.check_event_for_spam(event) if spam_error: if not isinstance(spam_error, str): spam_error = "Spam is not permitted here" raise SynapseError(403, spam_error, Codes.FORBIDDEN) - stream_id = await self.send_nonmember_event( - requester, - event, - context, + ev = await self.handle_new_client_event( + requester=requester, + event=event, + context=context, ratelimit=ratelimit, ignore_shadow_ban=ignore_shadow_ban, ) - return event, stream_id + + # we know it was persisted, so must have a stream ordering + assert ev.internal_metadata.stream_ordering + return ev, ev.internal_metadata.stream_ordering @measure_func("create_new_client_event") async def create_new_client_event( @@ -845,8 +807,11 @@ class EventCreationHandler: context: EventContext, ratelimit: bool = True, extra_users: List[UserID] = [], - ) -> int: - """Processes a new event. This includes checking auth, persisting it, + ignore_shadow_ban: bool = False, + ) -> EventBase: + """Processes a new event. + + This includes deduplicating, checking auth, persisting, notifying users, sending to remote servers, etc. If called from a worker will hit out to the master process for final @@ -859,10 +824,39 @@ class EventCreationHandler: ratelimit extra_users: Any extra users to notify about event + ignore_shadow_ban: True if shadow-banned users should be allowed to + send this event. + Return: - The stream_id of the persisted event. + If the event was deduplicated, the previous, duplicate, event. Otherwise, + `event`. + + Raises: + ShadowBanError if the requester has been shadow-banned. """ + # we don't apply shadow-banning to membership events here. Invites are blocked + # higher up the stack, and we allow shadow-banned users to send join and leave + # events as normal. + if ( + event.type != EventTypes.Member + and not ignore_shadow_ban + and requester.shadow_banned + ): + # We randomly sleep a bit just to annoy the requester. + await self.clock.sleep(random.randint(1, 10)) + raise ShadowBanError() + + if event.is_state(): + prev_event = await self.deduplicate_state_event(event, context) + if prev_event is not None: + logger.info( + "Not bothering to persist state event %s duplicated by %s", + event.event_id, + prev_event.event_id, + ) + return prev_event + if event.is_state() and (event.type, event.state_key) == ( EventTypes.Create, "", @@ -917,13 +911,13 @@ class EventCreationHandler: ) stream_id = result["stream_id"] event.internal_metadata.stream_ordering = stream_id - return stream_id + return event stream_id = await self.persist_and_notify_client_event( requester, event, context, ratelimit=ratelimit, extra_users=extra_users ) - return stream_id + return event except Exception: # Ensure that we actually remove the entries in the push actions # staging area, if we calculated them. @@ -1234,8 +1228,12 @@ class EventCreationHandler: # Since this is a dummy-event it is OK if it is sent by a # shadow-banned user. - await self.send_nonmember_event( - requester, event, context, ratelimit=False, ignore_shadow_ban=True, + await self.handle_new_client_event( + requester=requester, + event=event, + context=context, + ratelimit=False, + ignore_shadow_ban=True, ) return True except ConsentNotGivenError: diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index f14f791586..d0530a446c 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -185,6 +185,7 @@ class RoomCreationHandler(BaseHandler): ShadowBanError if the requester is shadow-banned. """ user_id = requester.user.to_string() + assert self.hs.is_mine_id(user_id), "User must be our own: %s" % (user_id,) # start by allocating a new room id r = await self.store.get_room(old_room_id) @@ -229,8 +230,8 @@ class RoomCreationHandler(BaseHandler): ) # now send the tombstone - await self.event_creation_handler.send_nonmember_event( - requester, tombstone_event, tombstone_context + await self.event_creation_handler.handle_new_client_event( + requester=requester, event=tombstone_event, context=tombstone_context, ) old_room_state = await tombstone_context.get_current_state_ids() diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 13b749b7cb..fd8114a64d 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -188,16 +188,6 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): require_consent=require_consent, ) - # Check if this event matches the previous membership event for the user. - duplicate = await self.event_creation_handler.deduplicate_state_event( - event, context - ) - if duplicate is not None: - # Discard the new event since this membership change is a no-op. - # we know it was persisted, so must have a stream ordering. - assert duplicate.internal_metadata.stream_ordering - return duplicate.event_id, duplicate.internal_metadata.stream_ordering - prev_state_ids = await context.get_prev_state_ids() prev_member_event_id = prev_state_ids.get((EventTypes.Member, user_id), None) @@ -222,7 +212,7 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): retry_after_ms=int(1000 * (time_allowed - time_now_s)) ) - stream_id = await self.event_creation_handler.handle_new_client_event( + result_event = await self.event_creation_handler.handle_new_client_event( requester, event, context, extra_users=[target], ratelimit=ratelimit, ) @@ -232,7 +222,9 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): if prev_member_event.membership == Membership.JOIN: await self._user_left_room(target, room_id) - return event.event_id, stream_id + # we know it was persisted, so should have a stream ordering + assert result_event.internal_metadata.stream_ordering + return result_event.event_id, result_event.internal_metadata.stream_ordering async def copy_room_tags_and_direct_to_room( self, old_room_id, new_room_id, user_id @@ -673,12 +665,6 @@ class RoomMemberHandler(metaclass=abc.ABCMeta): else: requester = types.create_requester(target_user) - prev_event = await self.event_creation_handler.deduplicate_state_event( - event, context - ) - if prev_event is not None: - return - prev_state_ids = await context.get_prev_state_ids() if event.membership == Membership.JOIN: if requester.is_guest: @@ -1186,10 +1172,13 @@ class RoomMemberMasterHandler(RoomMemberHandler): context = await self.state_handler.compute_event_context(event) context.app_service = requester.app_service - stream_id = await self.event_creation_handler.handle_new_client_event( + result_event = await self.event_creation_handler.handle_new_client_event( requester, event, context, extra_users=[UserID.from_string(target_user)], ) - return event.event_id, stream_id + # we know it was persisted, so must have a stream ordering + assert result_event.internal_metadata.stream_ordering + + return result_event.event_id, result_event.internal_metadata.stream_ordering async def _user_left_room(self, target: UserID, room_id: str) -> None: """Implements RoomMemberHandler._user_left_room diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py index cb7c0ed51a..702c6aa089 100644 --- a/tests/handlers/test_register.py +++ b/tests/handlers/test_register.py @@ -413,7 +413,7 @@ class RegistrationTestCase(unittest.HomeserverTestCase): ) ) self.get_success( - event_creation_handler.send_nonmember_event(requester, event, context) + event_creation_handler.handle_new_client_event(requester, event, context) ) # Register a second user, which won't be be in the room (or even have an invite) diff --git a/tests/unittest.py b/tests/unittest.py index 82ede9de34..5c87f6097e 100644 --- a/tests/unittest.py +++ b/tests/unittest.py @@ -608,7 +608,9 @@ class HomeserverTestCase(TestCase): if soft_failed: event.internal_metadata.soft_failed = True - self.get_success(event_creator.send_nonmember_event(requester, event, context)) + self.get_success( + event_creator.handle_new_client_event(requester, event, context) + ) return event.event_id |