diff options
| -rw-r--r-- | changelog.d/15394.misc | 1 | ||||
| -rw-r--r-- | synapse/api/constants.py | 2 | ||||
| -rw-r--r-- | synapse/api/room_versions.py | 17 | ||||
| -rw-r--r-- | synapse/event_auth.py | 25 | ||||
| -rw-r--r-- | synapse/handlers/federation_event.py | 5 | ||||
| -rw-r--r-- | synapse/handlers/message.py | 7 | ||||
| -rw-r--r-- | synapse/handlers/room.py | 22 | ||||
| -rw-r--r-- | synapse/storage/databases/main/room.py | 17 |
8 files changed, 72 insertions, 24 deletions
diff --git a/changelog.d/15394.misc b/changelog.d/15394.misc new file mode 100644 index 0000000000..91e6540438 --- /dev/null +++ b/changelog.d/15394.misc @@ -0,0 +1 @@ +Implement [MSC2175](https://github.com/matrix-org/matrix-doc/pull/2175) to stop adding `creator` to create events. diff --git a/synapse/api/constants.py b/synapse/api/constants.py index 0f224b34cd..c56b2f2561 100644 --- a/synapse/api/constants.py +++ b/synapse/api/constants.py @@ -215,6 +215,8 @@ class EventContentFields: FEDERATE: Final = "m.federate" # The creator of the room, as used in `m.room.create` events. + # + # This is deprecated in MSC2175. ROOM_CREATOR: Final = "creator" # Used in m.room.guest_access events. diff --git a/synapse/api/room_versions.py b/synapse/api/room_versions.py index bc15f2d063..3dcae12161 100644 --- a/synapse/api/room_versions.py +++ b/synapse/api/room_versions.py @@ -78,6 +78,8 @@ class RoomVersion: # MSC2209: Check 'notifications' key while verifying # m.room.power_levels auth rules. limit_notifications_power_levels: bool + # MSC2175: No longer include the creator in m.room.create events. + msc2175_implicit_room_creator: bool # MSC2174/MSC2176: Apply updated redaction rules algorithm. msc2176_redaction_rules: bool # MSC3083: Support the 'restricted' join_rule. @@ -118,6 +120,7 @@ class RoomVersions: special_case_aliases_auth=True, strict_canonicaljson=False, limit_notifications_power_levels=False, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -138,6 +141,7 @@ class RoomVersions: special_case_aliases_auth=True, strict_canonicaljson=False, limit_notifications_power_levels=False, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -158,6 +162,7 @@ class RoomVersions: special_case_aliases_auth=True, strict_canonicaljson=False, limit_notifications_power_levels=False, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -178,6 +183,7 @@ class RoomVersions: special_case_aliases_auth=True, strict_canonicaljson=False, limit_notifications_power_levels=False, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -198,6 +204,7 @@ class RoomVersions: special_case_aliases_auth=True, strict_canonicaljson=False, limit_notifications_power_levels=False, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -218,6 +225,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -238,6 +246,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=True, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -258,6 +267,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -278,6 +288,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=False, @@ -298,6 +309,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=True, @@ -318,6 +330,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=True, @@ -338,6 +351,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=True, @@ -358,6 +372,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=False, msc3375_redaction_rules=False, @@ -379,6 +394,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=True, @@ -399,6 +415,7 @@ class RoomVersions: special_case_aliases_auth=False, strict_canonicaljson=True, limit_notifications_power_levels=True, + msc2175_implicit_room_creator=False, msc2176_redaction_rules=False, msc3083_join_rules=True, msc3375_redaction_rules=True, diff --git a/synapse/event_auth.py b/synapse/event_auth.py index af55874b5c..f95d00d472 100644 --- a/synapse/event_auth.py +++ b/synapse/event_auth.py @@ -455,8 +455,11 @@ def _check_create(event: "EventBase") -> None: "room appears to have unsupported version %s" % (room_version_prop,), ) - # 1.4 If content has no creator field, reject. - if EventContentFields.ROOM_CREATOR not in event.content: + # 1.4 If content has no creator field, reject if the room version requires it. + if ( + not event.room_version.msc2175_implicit_room_creator + and EventContentFields.ROOM_CREATOR not in event.content + ): raise AuthError(403, "Create event lacks a 'creator' property") @@ -491,7 +494,11 @@ def _is_membership_change_allowed( key = (EventTypes.Create, "") create = auth_events.get(key) if create and event.prev_event_ids()[0] == create.event_id: - if create.content["creator"] == event.state_key: + if room_version.msc2175_implicit_room_creator: + creator = create.sender + else: + creator = create.content[EventContentFields.ROOM_CREATOR] + if creator == event.state_key: return target_user_id = event.state_key @@ -1004,10 +1011,14 @@ def get_user_power_level(user_id: str, auth_events: StateMap["EventBase"]) -> in # that. key = (EventTypes.Create, "") create_event = auth_events.get(key) - if create_event is not None and create_event.content["creator"] == user_id: - return 100 - else: - return 0 + if create_event is not None: + if create_event.room_version.msc2175_implicit_room_creator: + creator = create_event.sender + else: + creator = create_event.content[EventContentFields.ROOM_CREATOR] + if creator == user_id: + return 100 + return 0 def get_named_level(auth_events: StateMap["EventBase"], name: str, default: int) -> int: diff --git a/synapse/handlers/federation_event.py b/synapse/handlers/federation_event.py index 982c8d3b2f..8d5be81a92 100644 --- a/synapse/handlers/federation_event.py +++ b/synapse/handlers/federation_event.py @@ -1515,7 +1515,10 @@ class FederationEventHandler: # support it or the event is not from the room creator. room_version = await self._store.get_room_version(marker_event.room_id) create_event = await self._store.get_create_event_for_room(marker_event.room_id) - room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR) + if not room_version.msc2175_implicit_room_creator: + room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR) + else: + room_creator = create_event.sender if not room_version.msc2716_historical and ( not self._config.experimental.msc2716_enabled or marker_event.sender != room_creator diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 4c75433a63..a17fe3bf53 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -1909,7 +1909,12 @@ class EventCreationHandler: room_version_obj = KNOWN_ROOM_VERSIONS[room_version] create_event = await self.store.get_create_event_for_room(event.room_id) - room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR) + if not room_version_obj.msc2175_implicit_room_creator: + room_creator = create_event.content.get( + EventContentFields.ROOM_CREATOR + ) + else: + room_creator = create_event.sender # Only check an insertion event if the room version # supports it or the event is from the room creator. diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index be120cb12f..2d69cabf43 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -567,6 +567,7 @@ class RoomCreationHandler: await self._send_events_for_new_room( requester, new_room_id, + new_room_version, # we expect to override all the presets with initial_state, so this is # somewhat arbitrary. room_config={"preset": RoomCreationPreset.PRIVATE_CHAT}, @@ -922,6 +923,7 @@ class RoomCreationHandler: ) = await self._send_events_for_new_room( requester, room_id, + room_version, room_config=config, invite_list=invite_list, initial_state=initial_state, @@ -998,6 +1000,7 @@ class RoomCreationHandler: self, creator: Requester, room_id: str, + room_version: RoomVersion, room_config: JsonDict, invite_list: List[str], initial_state: MutableStateMap, @@ -1020,6 +1023,8 @@ class RoomCreationHandler: the user requesting the room creation room_id: room id for the room being created + room_version: + The room version of the new room. room_config: A dict of configuration options. This will be the body of a /createRoom request; see @@ -1053,14 +1058,6 @@ class RoomCreationHandler: # (as this info can't be pulled from the db) state_map: MutableStateMap[str] = {} - def create_event_dict(etype: str, content: JsonDict, **kwargs: Any) -> JsonDict: - e = {"type": etype, "content": content} - - e.update(event_keys) - e.update(kwargs) - - return e - async def create_event( etype: str, content: JsonDict, @@ -1083,7 +1080,10 @@ class RoomCreationHandler: nonlocal depth nonlocal prev_event - event_dict = create_event_dict(etype, content, **kwargs) + # Create the event dictionary. + event_dict = {"type": etype, "content": content} + event_dict.update(event_keys) + event_dict.update(kwargs) ( new_event, @@ -1120,7 +1120,9 @@ class RoomCreationHandler: 400, f"'{preset_config}' is not a valid preset", errcode=Codes.BAD_JSON ) - creation_content.update({"creator": creator_id}) + # MSC2175 removes the creator field from the create event. + if not room_version.msc2175_implicit_room_creator: + creation_content["creator"] = creator_id creation_event, unpersisted_creation_context = await create_event( EventTypes.Create, creation_content, False ) diff --git a/synapse/storage/databases/main/room.py b/synapse/storage/databases/main/room.py index 3825bd6079..dd7dbb6901 100644 --- a/synapse/storage/databases/main/room.py +++ b/synapse/storage/databases/main/room.py @@ -1998,6 +1998,9 @@ class RoomBackgroundUpdateStore(SQLBaseStore): for room_id, event_json in room_id_to_create_event_results: event_dict = db_to_json(event_json) + # The creator property might not exist in newer room versions, but + # for those versions the creator column should be properly populate + # during room creation. creator = event_dict.get("content").get(EventContentFields.ROOM_CREATOR) self.db_pool.simple_update_txn( @@ -2132,12 +2135,16 @@ class RoomStore(RoomBackgroundUpdateStore, RoomWorkerStore): # invalid, and it would fail auth checks anyway. raise StoreError(400, "No create event in state") - room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR) + # Before MSC2175, the room creator was a separate field. + if not room_version.msc2175_implicit_room_creator: + room_creator = create_event.content.get(EventContentFields.ROOM_CREATOR) - if not isinstance(room_creator, str): - # If the create event does not have a creator then the room is - # invalid, and it would fail auth checks anyway. - raise StoreError(400, "No creator defined on the create event") + if not isinstance(room_creator, str): + # If the create event does not have a creator then the room is + # invalid, and it would fail auth checks anyway. + raise StoreError(400, "No creator defined on the create event") + else: + room_creator = create_event.sender await self.db_pool.simple_upsert( desc="upsert_room_on_join", |