diff options
| -rw-r--r-- | changelog.d/4405.bugfix | 1 | ||||
| -rw-r--r-- | synapse/events/__init__.py | 9 | ||||
| -rw-r--r-- | synapse/federation/federation_client.py | 24 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 32 | ||||
| -rw-r--r-- | synapse/storage/roommember.py | 8 |
5 files changed, 35 insertions, 39 deletions
diff --git a/changelog.d/4405.bugfix b/changelog.d/4405.bugfix new file mode 100644 index 0000000000..974d799b88 --- /dev/null +++ b/changelog.d/4405.bugfix @@ -0,0 +1 @@ +Fix bug when rejecting remote invites diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py index 9dd6940385..888296933b 100644 --- a/synapse/events/__init__.py +++ b/synapse/events/__init__.py @@ -42,8 +42,13 @@ class _EventInternalMetadata(object): def is_outlier(self): return getattr(self, "outlier", False) - def is_invite_from_remote(self): - return getattr(self, "invite_from_remote", False) + def is_out_of_band_membership(self): + """Whether this is an out of band membership, like an invite or an invite + rejection. This is needed as those events are marked as outliers, but + they still need to be processed as if they're new events (e.g. updating + invite state in the database, relaying to clients, etc). + """ + return getattr(self, "out_of_band_membership", False) def get_send_on_behalf_of(self): """Whether this server should send the event on behalf of another server. diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py index d05ed91d64..df7d18700c 100644 --- a/synapse/federation/federation_client.py +++ b/synapse/federation/federation_client.py @@ -32,7 +32,7 @@ from synapse.api.errors import ( HttpResponseException, SynapseError, ) -from synapse.events import builder +from synapse.crypto.event_signing import add_hashes_and_signatures from synapse.federation.federation_base import FederationBase, event_from_pdu_json from synapse.util import logcontext, unwrapFirstError from synapse.util.caches.expiringcache import ExpiringCache @@ -66,6 +66,8 @@ class FederationClient(FederationBase): self.state = hs.get_state_handler() self.transport_layer = hs.get_federation_transport_client() + self.event_builder_factory = hs.get_event_builder_factory() + self._get_pdu_cache = ExpiringCache( cache_name="get_pdu_cache", clock=self._clock, @@ -522,6 +524,8 @@ class FederationClient(FederationBase): Does so by asking one of the already participating servers to create an event with proper context. + Returns a fully signed and hashed event. + Note that this does not append any events to any graphs. Args: @@ -536,8 +540,9 @@ class FederationClient(FederationBase): params (dict[str, str|Iterable[str]]): Query parameters to include in the request. Return: - Deferred: resolves to a tuple of (origin (str), event (object)) - where origin is the remote homeserver which generated the event. + Deferred[tuple[str, FrozenEvent]]: resolves to a tuple of `origin` + and event where origin is the remote homeserver which generated + the event. Fails with a ``SynapseError`` if the chosen remote server returns a 300/400 code. @@ -571,7 +576,18 @@ class FederationClient(FederationBase): if "prev_state" not in pdu_dict: pdu_dict["prev_state"] = [] - ev = builder.EventBuilder(pdu_dict) + # Strip off the fields that we want to clobber. + pdu_dict.pop("origin", None) + pdu_dict.pop("origin_server_ts", None) + pdu_dict.pop("unsigned", None) + + builder = self.event_builder_factory.new(pdu_dict) + add_hashes_and_signatures( + builder, + self.hs.hostname, + self.hs.config.signing_key[0] + ) + ev = builder.build() defer.returnValue( (destination, ev) diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index a3bb864bb2..d53b716ffb 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -43,10 +43,7 @@ from synapse.api.errors import ( StoreError, SynapseError, ) -from synapse.crypto.event_signing import ( - add_hashes_and_signatures, - compute_event_signature, -) +from synapse.crypto.event_signing import compute_event_signature from synapse.events.validator import EventValidator from synapse.replication.http.federation import ( ReplicationCleanRoomRestServlet, @@ -58,7 +55,6 @@ from synapse.types import UserID, get_domain_from_id from synapse.util import logcontext, unwrapFirstError from synapse.util.async_helpers import Linearizer from synapse.util.distributor import user_joined_room -from synapse.util.frozenutils import unfreeze from synapse.util.logutils import log_function from synapse.util.retryutils import NotRetryingDestination from synapse.visibility import filter_events_for_server @@ -1083,7 +1079,6 @@ class FederationHandler(BaseHandler): handled_events = set() try: - event = self._sign_event(event) # Try the host we successfully got a response to /make_join/ # request first. try: @@ -1287,7 +1282,7 @@ class FederationHandler(BaseHandler): ) event.internal_metadata.outlier = True - event.internal_metadata.invite_from_remote = True + event.internal_metadata.out_of_band_membership = True event.signatures.update( compute_event_signature( @@ -1313,7 +1308,7 @@ class FederationHandler(BaseHandler): # Mark as outlier as we don't have any state for this event; we're not # even in the room. event.internal_metadata.outlier = True - event = self._sign_event(event) + event.internal_metadata.out_of_band_membership = True # Try the host that we succesfully called /make_leave/ on first for # the /send_leave/ request. @@ -1357,27 +1352,6 @@ class FederationHandler(BaseHandler): assert(event.room_id == room_id) defer.returnValue((origin, event)) - def _sign_event(self, event): - event.internal_metadata.outlier = False - - builder = self.event_builder_factory.new( - unfreeze(event.get_pdu_json()) - ) - - builder.event_id = self.event_builder_factory.create_event_id() - builder.origin = self.hs.hostname - - if not hasattr(event, "signatures"): - builder.signatures = {} - - add_hashes_and_signatures( - builder, - self.hs.hostname, - self.hs.config.signing_key[0], - ) - - return builder.build() - @defer.inlineCallbacks @log_function def on_make_leave_request(self, room_id, user_id): diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index 0707f9a86a..592c1bcd33 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -588,12 +588,12 @@ class RoomMemberStore(RoomMemberWorkerStore): ) # We update the local_invites table only if the event is "current", - # i.e., its something that has just happened. - # The only current event that can also be an outlier is if its an - # invite that has come in across federation. + # i.e., its something that has just happened. If the event is an + # outlier it is only current if its an "out of band membership", + # like a remote invite or a rejection of a remote invite. is_new_state = not backfilled and ( not event.internal_metadata.is_outlier() - or event.internal_metadata.is_invite_from_remote() + or event.internal_metadata.is_out_of_band_membership() ) is_mine = self.hs.is_mine_id(event.state_key) if is_new_state and is_mine: |