diff --git a/changelog.d/8537.misc b/changelog.d/8537.misc new file mode 100644 index 000000000000..26309b5b9393 --- /dev/null +++ b/changelog.d/8537.misc @@ -0,0 +1 @@ +Factor out common code between `RoomMemberHandler._locally_reject_invite` and `EventCreationHandler.create_event`. diff --git a/synapse/events/builder.py b/synapse/events/builder.py index b6c47be6468c..df4f950fec86 100644 --- a/synapse/events/builder.py +++ b/synapse/events/builder.py @@ -97,32 +97,37 @@ def state_key(self): def is_state(self): return self._state_key is not None - async def build(self, prev_event_ids: List[str]) -> EventBase: + async def build( + self, prev_event_ids: List[str], auth_event_ids: Optional[List[str]] + ) -> EventBase: """Transform into a fully signed and hashed event Args: prev_event_ids: The event IDs to use as the prev events + auth_event_ids: The event IDs to use as the auth events. + Should normally be set to None, which will cause them to be calculated + based on the room state at the prev_events. Returns: The signed and hashed event. """ - - state_ids = await self._state.get_current_state_ids( - self.room_id, prev_event_ids - ) - auth_ids = self._auth.compute_auth_events(self, state_ids) + if auth_event_ids is None: + state_ids = await self._state.get_current_state_ids( + self.room_id, prev_event_ids + ) + auth_event_ids = self._auth.compute_auth_events(self, state_ids) format_version = self.room_version.event_format if format_version == EventFormatVersions.V1: # The types of auth/prev events changes between event versions. auth_events = await self._store.add_event_hashes( - auth_ids + auth_event_ids ) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]] prev_events = await self._store.add_event_hashes( prev_event_ids ) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]] else: - auth_events = auth_ids + auth_events = auth_event_ids prev_events = prev_event_ids old_depth = await self._store.get_max_depth_of(prev_event_ids) diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index c52e6824d340..f18f8825963d 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -437,9 +437,9 @@ async def create_event( self, requester: Requester, event_dict: dict, - token_id: Optional[str] = None, txn_id: Optional[str] = None, prev_event_ids: Optional[List[str]] = None, + auth_event_ids: Optional[List[str]] = None, require_consent: bool = True, ) -> Tuple[EventBase, EventContext]: """ @@ -453,13 +453,18 @@ async def create_event( Args: requester event_dict: An entire event - token_id txn_id prev_event_ids: the forward extremities to use as the prev_events for the new event. If None, they will be requested from the database. + + auth_event_ids: + The event ids to use as the auth_events for the new event. + Should normally be left as None, which will cause them to be calculated + based on the room state at the prev_events. + require_consent: Whether to check if the requester has consented to the privacy policy. Raises: @@ -511,14 +516,17 @@ async def create_event( if require_consent and not is_exempt: await self.assert_accepted_privacy_policy(requester) - if token_id is not None: - builder.internal_metadata.token_id = token_id + if requester.access_token_id is not None: + builder.internal_metadata.token_id = requester.access_token_id if txn_id is not None: builder.internal_metadata.txn_id = txn_id event, context = await self.create_new_client_event( - builder=builder, requester=requester, prev_event_ids=prev_event_ids, + builder=builder, + requester=requester, + prev_event_ids=prev_event_ids, + auth_event_ids=auth_event_ids, ) # In an ideal world we wouldn't need the second part of this condition. However, @@ -726,7 +734,7 @@ async def create_and_send_nonmember_event( return event, event.internal_metadata.stream_ordering event, context = await self.create_event( - requester, event_dict, token_id=requester.access_token_id, txn_id=txn_id + requester, event_dict, txn_id=txn_id ) assert self.hs.is_mine_id(event.sender), "User must be our own: %s" % ( @@ -757,6 +765,7 @@ async def create_new_client_event( builder: EventBuilder, requester: Optional[Requester] = None, prev_event_ids: Optional[List[str]] = None, + auth_event_ids: Optional[List[str]] = None, ) -> Tuple[EventBase, EventContext]: """Create a new event for a local client @@ -769,6 +778,11 @@ async def create_new_client_event( If None, they will be requested from the database. + auth_event_ids: + The event ids to use as the auth_events for the new event. + Should normally be left as None, which will cause them to be calculated + based on the room state at the prev_events. + Returns: Tuple of created event, context """ @@ -790,7 +804,9 @@ async def create_new_client_event( builder.type == EventTypes.Create or len(prev_event_ids) > 0 ), "Attempting to create an event with no prev_events" - event = await builder.build(prev_event_ids=prev_event_ids) + event = await builder.build( + prev_event_ids=prev_event_ids, auth_event_ids=auth_event_ids + ) context = await self.state.compute_event_context(event) if requester: context.app_service = requester.app_service diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 93ed51063ac2..ec300d8877c6 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -214,7 +214,6 @@ async def _upgrade_room( "replacement_room": new_room_id, }, }, - token_id=requester.access_token_id, ) old_room_version = await self.store.get_room_version_id(old_room_id) await self.auth.check_from_context( diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 0080eeaf8dbf..ec784030e90f 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -17,12 +17,10 @@ import logging import random from http import HTTPStatus -from typing import TYPE_CHECKING, Iterable, List, Optional, Tuple, Union - -from unpaddedbase64 import encode_base64 +from typing import TYPE_CHECKING, Iterable, List, Optional, Tuple from synapse import types -from synapse.api.constants import MAX_DEPTH, AccountDataTypes, EventTypes, Membership +from synapse.api.constants import AccountDataTypes, EventTypes, Membership from synapse.api.errors import ( AuthError, Codes, @@ -31,12 +29,8 @@ SynapseError, ) from synapse.api.ratelimiting import Ratelimiter -from synapse.api.room_versions import EventFormatVersions -from synapse.crypto.event_signing import compute_event_reference_hash from synapse.events import EventBase -from synapse.events.builder import create_local_event_from_event_dict from synapse.events.snapshot import EventContext -from synapse.events.validator import EventValidator from synapse.storage.roommember import RoomsForUser from synapse.types import JsonDict, Requester, RoomAlias, RoomID, StateMap, UserID from synapse.util.async_helpers import Linearizer @@ -193,7 +187,6 @@ async def _local_membership_update( # For backwards compatibility: "membership": membership, }, - token_id=requester.access_token_id, txn_id=txn_id, prev_event_ids=prev_event_ids, require_consent=require_consent, @@ -1133,31 +1126,10 @@ async def _locally_reject_invite( room_id = invite_event.room_id target_user = invite_event.state_key - room_version = await self.store.get_room_version(room_id) content["membership"] = Membership.LEAVE - # the auth events for the new event are the same as that of the invite, plus - # the invite itself. - # - # the prev_events are just the invite. - invite_hash = invite_event.event_id # type: Union[str, Tuple] - if room_version.event_format == EventFormatVersions.V1: - alg, h = compute_event_reference_hash(invite_event) - invite_hash = (invite_event.event_id, {alg: encode_base64(h)}) - - auth_events = tuple(invite_event.auth_events) + (invite_hash,) - prev_events = (invite_hash,) - - # we cap depth of generated events, to ensure that they are not - # rejected by other servers (and so that they can be persisted in - # the db) - depth = min(invite_event.depth + 1, MAX_DEPTH) - event_dict = { - "depth": depth, - "auth_events": auth_events, - "prev_events": prev_events, "type": EventTypes.Member, "room_id": room_id, "sender": target_user, @@ -1165,24 +1137,23 @@ async def _locally_reject_invite( "state_key": target_user, } - event = create_local_event_from_event_dict( - clock=self.clock, - hostname=self.hs.hostname, - signing_key=self.hs.signing_key, - room_version=room_version, - event_dict=event_dict, + # the auth events for the new event are the same as that of the invite, plus + # the invite itself. + # + # the prev_events are just the invite. + prev_event_ids = [invite_event.event_id] + auth_event_ids = invite_event.auth_event_ids() + prev_event_ids + + event, context = await self.event_creation_handler.create_event( + requester, + event_dict, + txn_id=txn_id, + prev_event_ids=prev_event_ids, + auth_event_ids=auth_event_ids, ) event.internal_metadata.outlier = True event.internal_metadata.out_of_band_membership = True - if txn_id is not None: - event.internal_metadata.txn_id = txn_id - if requester.access_token_id is not None: - event.internal_metadata.token_id = requester.access_token_id - - EventValidator().validate_new(event, self.config) - context = await self.state_handler.compute_event_context(event) - context.app_service = requester.app_service result_event = await self.event_creation_handler.handle_new_client_event( requester, event, context, extra_users=[UserID.from_string(target_user)], ) diff --git a/tests/handlers/test_message.py b/tests/handlers/test_message.py index 64e28bc639ac..9f6f21a6e202 100644 --- a/tests/handlers/test_message.py +++ b/tests/handlers/test_message.py @@ -66,7 +66,6 @@ def _create_duplicate_event(self, txn_id: str) -> Tuple[EventBase, EventContext] "sender": self.requester.user.to_string(), "content": {"msgtype": "m.text", "body": random_string(5)}, }, - token_id=self.token_id, txn_id=txn_id, ) ) diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py index 914c82e7a8d0..8ed67640f8e7 100644 --- a/tests/handlers/test_presence.py +++ b/tests/handlers/test_presence.py @@ -615,7 +615,7 @@ def _add_new_user(self, room_id, user_id): self.store.get_latest_event_ids_in_room(room_id) ) - event = self.get_success(builder.build(prev_event_ids)) + event = self.get_success(builder.build(prev_event_ids, None)) self.get_success(self.federation_handler.on_receive_pdu(hostname, event)) diff --git a/tests/replication/test_federation_sender_shard.py b/tests/replication/test_federation_sender_shard.py index 9c4a9c35635b..779745ae9da3 100644 --- a/tests/replication/test_federation_sender_shard.py +++ b/tests/replication/test_federation_sender_shard.py @@ -226,7 +226,7 @@ def create_room_with_remote_server(self, user, token, remote_server="other_serve } builder = factory.for_room_version(room_version, event_dict) - join_event = self.get_success(builder.build(prev_event_ids)) + join_event = self.get_success(builder.build(prev_event_ids, None)) self.get_success(federation.on_send_join_request(remote_server, join_event)) self.replicate() diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py index 1ea35d60c11c..d4f9e809db36 100644 --- a/tests/storage/test_redaction.py +++ b/tests/storage/test_redaction.py @@ -236,9 +236,9 @@ def __init__(self, base_builder, event_id): self._event_id = event_id @defer.inlineCallbacks - def build(self, prev_event_ids): + def build(self, prev_event_ids, auth_event_ids): built_event = yield defer.ensureDeferred( - self._base_builder.build(prev_event_ids) + self._base_builder.build(prev_event_ids, auth_event_ids) ) built_event._event_id = self._event_id