diff options
Diffstat (limited to 'synapse/handlers/message.py')
| -rw-r--r-- | synapse/handlers/message.py | 126 |
1 files changed, 97 insertions, 29 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index a5e23c4caf..0f8cce8ffe 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -24,7 +24,7 @@ from twisted.internet import defer from twisted.internet.defer import succeed from synapse import event_auth -from synapse.api.constants import EventTypes, Membership, RelationTypes +from synapse.api.constants import EventTypes, Membership, RelationTypes, UserTypes from synapse.api.errors import ( AuthError, Codes, @@ -222,6 +222,13 @@ class MessageHandler(object): } +# The duration (in ms) after which rooms should be removed +# `_rooms_to_exclude_from_dummy_event_insertion` (with the effect that we will try +# to generate a dummy event for them once more) +# +_DUMMY_EVENT_ROOM_EXCLUSION_EXPIRY = 7 * 24 * 60 * 60 * 1000 + + class EventCreationHandler(object): def __init__(self, hs): self.hs = hs @@ -258,6 +265,13 @@ class EventCreationHandler(object): self.config.block_events_without_consent_error ) + # Rooms which should be excluded from dummy insertion. (For instance, + # those without local users who can send events into the room). + # + # map from room id to time-of-last-attempt. + # + self._rooms_to_exclude_from_dummy_event_insertion = {} # type: dict[str, int] + # we need to construct a ConsentURIBuilder here, as it checks that the necessary # config options, but *only* if we have a configuration for which we are # going to need it. @@ -469,6 +483,9 @@ class EventCreationHandler(object): u = yield self.store.get_user_by_id(user_id) assert u is not None + if u["user_type"] in (UserTypes.SUPPORT, UserTypes.BOT): + # support and bot users are not required to consent + return if u["appservice_id"] is not None: # users registered by an appservice are exempt return @@ -726,7 +743,27 @@ class EventCreationHandler(object): assert not self.config.worker_app if ratelimit: - yield self.base_handler.ratelimit(requester) + # We check if this is a room admin redacting an event so that we + # can apply different ratelimiting. We do this by simply checking + # it's not a self-redaction (to avoid having to look up whether the + # user is actually admin or not). + is_admin_redaction = False + if event.type == EventTypes.Redaction: + original_event = yield self.store.get_event( + event.redacts, + check_redacted=False, + get_prev_content=False, + allow_rejected=False, + allow_none=True, + ) + + is_admin_redaction = ( + original_event and event.sender != original_event.sender + ) + + yield self.base_handler.ratelimit( + requester, is_admin_redaction=is_admin_redaction + ) yield self.base_handler.maybe_kick_guest_users(event, context) @@ -865,9 +902,11 @@ class EventCreationHandler(object): """Background task to send dummy events into rooms that have a large number of extremities """ - + self._expire_rooms_to_exclude_from_dummy_event_insertion() room_ids = yield self.store.get_rooms_with_many_extremities( - min_count=10, limit=5 + min_count=10, + limit=5, + room_id_filter=self._rooms_to_exclude_from_dummy_event_insertion.keys(), ) for room_id in room_ids: @@ -881,32 +920,61 @@ class EventCreationHandler(object): members = yield self.state.get_current_users_in_room( room_id, latest_event_ids=latest_event_ids ) + dummy_event_sent = False + for user_id in members: + if not self.hs.is_mine_id(user_id): + continue + requester = create_requester(user_id) + try: + event, context = yield self.create_event( + requester, + { + "type": "org.matrix.dummy_event", + "content": {}, + "room_id": room_id, + "sender": user_id, + }, + prev_events_and_hashes=prev_events_and_hashes, + ) - user_id = None - for member in members: - if self.hs.is_mine_id(member): - user_id = member - break - - if not user_id: - # We don't have a joined user. - # TODO: We should do something here to stop the room from - # appearing next time. - continue + event.internal_metadata.proactively_send = False - requester = create_requester(user_id) + yield self.send_nonmember_event( + requester, event, context, ratelimit=False + ) + dummy_event_sent = True + break + except ConsentNotGivenError: + logger.info( + "Failed to send dummy event into room %s for user %s due to " + "lack of consent. Will try another user" % (room_id, user_id) + ) + except AuthError: + logger.info( + "Failed to send dummy event into room %s for user %s due to " + "lack of power. Will try another user" % (room_id, user_id) + ) - event, context = yield self.create_event( - requester, - { - "type": "org.matrix.dummy_event", - "content": {}, - "room_id": room_id, - "sender": user_id, - }, - prev_events_and_hashes=prev_events_and_hashes, + if not dummy_event_sent: + # Did not find a valid user in the room, so remove from future attempts + # Exclusion is time limited, so the room will be rechecked in the future + # dependent on _DUMMY_EVENT_ROOM_EXCLUSION_EXPIRY + logger.info( + "Failed to send dummy event into room %s. Will exclude it from " + "future attempts until cache expires" % (room_id,) + ) + now = self.clock.time_msec() + self._rooms_to_exclude_from_dummy_event_insertion[room_id] = now + + def _expire_rooms_to_exclude_from_dummy_event_insertion(self): + expire_before = self.clock.time_msec() - _DUMMY_EVENT_ROOM_EXCLUSION_EXPIRY + to_expire = set() + for room_id, time in self._rooms_to_exclude_from_dummy_event_insertion.items(): + if time < expire_before: + to_expire.add(room_id) + for room_id in to_expire: + logger.debug( + "Expiring room id %s from dummy event insertion exclusion cache", + room_id, ) - - event.internal_metadata.proactively_send = False - - yield self.send_nonmember_event(requester, event, context, ratelimit=False) + del self._rooms_to_exclude_from_dummy_event_insertion[room_id] |