diff --git a/changelog.d/4448.misc b/changelog.d/4448.misc new file mode 100644 index 000000000000..43f8963614b7 --- /dev/null +++ b/changelog.d/4448.misc @@ -0,0 +1 @@ +Add infrastructure to support different event formats diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py index b7ad729c634e..d749bfdd3a4b 100644 --- a/synapse/federation/federation_base.py +++ b/synapse/federation/federation_base.py @@ -43,8 +43,8 @@ def __init__(self, hs): self._clock = hs.get_clock() @defer.inlineCallbacks - def _check_sigs_and_hash_and_fetch(self, origin, pdus, outlier=False, - include_none=False): + def _check_sigs_and_hash_and_fetch(self, origin, pdus, room_version, + outlier=False, include_none=False): """Takes a list of PDUs and checks the signatures and hashs of each one. If a PDU fails its signature check then we check if we have it in the database and if not then request if from the originating server of @@ -56,8 +56,12 @@ def _check_sigs_and_hash_and_fetch(self, origin, pdus, outlier=False, a new list. Args: + origin (str) pdu (list) - outlier (bool) + room_version (str) + outlier (bool): Whether the events are outliers or not + include_none (str): Whether to include None in the returned list + for events that have failed their checks Returns: Deferred : A list of PDUs that have valid signatures and hashes. @@ -84,6 +88,7 @@ def handle_check_result(pdu, deferred): res = yield self.get_pdu( destinations=[pdu.origin], event_id=pdu.event_id, + room_version=room_version, outlier=outlier, timeout=10000, ) diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py index d05ed91d64b7..7fb573614261 100644 --- a/synapse/federation/federation_client.py +++ b/synapse/federation/federation_client.py @@ -25,7 +25,12 @@ from twisted.internet import defer -from synapse.api.constants import KNOWN_ROOM_VERSIONS, EventTypes, Membership +from synapse.api.constants import ( + KNOWN_ROOM_VERSIONS, + EventTypes, + Membership, + RoomVersions, +) from synapse.api.errors import ( CodeMessageException, FederationDeniedError, @@ -202,7 +207,8 @@ def backfill(self, dest, context, limit, extremities): @defer.inlineCallbacks @log_function - def get_pdu(self, destinations, event_id, outlier=False, timeout=None): + def get_pdu(self, destinations, event_id, room_version, outlier=False, + timeout=None): """Requests the PDU with given origin and ID from the remote home servers. @@ -212,6 +218,7 @@ def get_pdu(self, destinations, event_id, outlier=False, timeout=None): Args: destinations (list): Which home servers to query event_id (str): event to fetch + room_version (str): version of the room outlier (bool): Indicates whether the PDU is an `outlier`, i.e. if it's from an arbitary point in the context as opposed to part of the current block of PDUs. Defaults to `False` @@ -352,10 +359,13 @@ def get_state_for_room(self, destination, room_id, event_id): ev.event_id for ev in itertools.chain(pdus, auth_chain) ]) + room_version = yield self.store.get_room_version(room_id) + signed_pdus = yield self._check_sigs_and_hash_and_fetch( destination, [p for p in pdus if p.event_id not in seen_events], - outlier=True + outlier=True, + room_version=room_version, ) signed_pdus.extend( seen_events[p.event_id] for p in pdus if p.event_id in seen_events @@ -364,7 +374,8 @@ def get_state_for_room(self, destination, room_id, event_id): signed_auth = yield self._check_sigs_and_hash_and_fetch( destination, [p for p in auth_chain if p.event_id not in seen_events], - outlier=True + outlier=True, + room_version=room_version, ) signed_auth.extend( seen_events[p.event_id] for p in auth_chain if p.event_id in seen_events @@ -411,6 +422,8 @@ def random_server_list(): random.shuffle(srvs) return srvs + room_version = yield self.store.get_room_version(room_id) + batch_size = 20 missing_events = list(missing_events) for i in range(0, len(missing_events), batch_size): @@ -421,6 +434,7 @@ def random_server_list(): self.get_pdu, destinations=random_server_list(), event_id=e_id, + room_version=room_version, ) for e_id in batch ] @@ -450,8 +464,11 @@ def get_event_auth(self, destination, room_id, event_id): for p in res["auth_chain"] ] + room_version = yield self.store.get_room_version(room_id) + signed_auth = yield self._check_sigs_and_hash_and_fetch( - destination, auth_chain, outlier=True + destination, auth_chain, + outlier=True, room_version=room_version, ) signed_auth.sort(key=lambda e: e.depth) @@ -650,9 +667,21 @@ def send_request(destination): for p in itertools.chain(state, auth_chain) } + room_version = None + for e in state: + if (e.type, e.state_key) == (EventTypes.Create, ""): + room_version = e.content.get("room_version", RoomVersions.V1) + break + + if room_version is None: + # If the state doesn't have a create event then the room is + # invalid, and it would fail auth checks anyway. + raise SynapseError(400, "No create event in state") + valid_pdus = yield self._check_sigs_and_hash_and_fetch( destination, list(pdus.values()), outlier=True, + room_version=room_version, ) valid_pdus_map = { @@ -790,8 +819,10 @@ def query_auth(self, destination, room_id, event_id, local_auth): for e in content["auth_chain"] ] + room_version = yield self.store.get_room_version(room_id) + signed_auth = yield self._check_sigs_and_hash_and_fetch( - destination, auth_chain, outlier=True + destination, auth_chain, outlier=True, room_version=room_version, ) signed_auth.sort(key=lambda e: e.depth) @@ -838,8 +869,10 @@ def get_missing_events(self, destination, room_id, earliest_events_ids, for e in content.get("events", []) ] + room_version = yield self.store.get_room_version(room_id) + signed_events = yield self._check_sigs_and_hash_and_fetch( - destination, events, outlier=False + destination, events, outlier=False, room_version=room_version, ) except HttpResponseException as e: if not e.code == 400: diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index 37d29e702739..cb729c69ea6d 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -457,8 +457,10 @@ def on_query_auth_request(self, origin, content, room_id, event_id): for e in content["auth_chain"] ] + room_version = yield self.store.get_room_version(room_id) + signed_auth = yield self._check_sigs_and_hash_and_fetch( - origin, auth_chain, outlier=True + origin, auth_chain, outlier=True, room_version=room_version, ) ret = yield self.handler.on_query_auth( diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index a3bb864bb223..5280d88a5036 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -34,6 +34,7 @@ EventTypes, Membership, RejectedReason, + RoomVersions, ) from synapse.api.errors import ( AuthError, @@ -342,6 +343,8 @@ def on_receive_pdu( room_id, event_id, p, ) + room_version = yield self.store.get_room_version(room_id) + with logcontext.nested_logging_context(p): # note that if any of the missing prevs share missing state or # auth events, the requests to fetch those events are deduped @@ -355,7 +358,7 @@ def on_receive_pdu( # we want the state *after* p; get_state_for_room returns the # state *before* p. remote_event = yield self.federation_client.get_pdu( - [origin], p, outlier=True, + [origin], p, room_version, outlier=True, ) if remote_event is None: @@ -379,7 +382,6 @@ def on_receive_pdu( for x in remote_state: event_map[x.event_id] = x - room_version = yield self.store.get_room_version(room_id) state_map = yield resolve_events_with_store( room_version, state_maps, event_map, state_res_store=StateResolutionStore(self.store), @@ -655,6 +657,8 @@ def backfill(self, dest, room_id, limit, extremities): if dest == self.server_name: raise SynapseError(400, "Can't backfill from self.") + room_version = yield self.store.get_room_version(room_id) + events = yield self.federation_client.backfill( dest, room_id, @@ -748,6 +752,7 @@ def backfill(self, dest, room_id, limit, extremities): self.federation_client.get_pdu, [dest], event_id, + room_version=room_version, outlier=True, timeout=10000, ) @@ -1659,6 +1664,13 @@ def _persist_auth_tree(self, origin, auth_events, state, event): create_event = e break + if create_event is None: + # If the state doesn't have a create event then the room is + # invalid, and it would fail auth checks anyway. + raise SynapseError(400, "No create event in state") + + room_version = create_event.content.get("room_version", RoomVersions.V1) + missing_auth_events = set() for e in itertools.chain(auth_events, state, [event]): for e_id in e.auth_event_ids(): @@ -1669,6 +1681,7 @@ def _persist_auth_tree(self, origin, auth_events, state, event): m_ev = yield self.federation_client.get_pdu( [origin], e_id, + room_version=room_version, outlier=True, timeout=10000, )