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Correct field name for stripped state events when knocking. knock_state_events -> knock_room_state (#14102)

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Andrew Morgan 2022-10-12 14:37:20 +01:00 committed by GitHub
parent c152e58116
commit 9c23442ac9
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4 changed files with 26 additions and 6 deletions
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1
changelog.d/14102.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug introduced in Synapse v1.37.0 in which an incorrect key name was used for sending and receiving room metadata when knocking on a room.

2
synapse/federation/federation_client.py
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@ -1294,7 +1294,7 @@ class FederationClient(FederationBase):
return resp[1]
async def send_knock(self, destinations: List[str], pdu: EventBase) -> JsonDict:
"""Attempts to send a knock event to given a list of servers. Iterates
"""Attempts to send a knock event to a given list of servers. Iterates
through the list until one attempt succeeds.
Doing so will cause the remote server to add the event to the graph,

9
synapse/federation/federation_server.py
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@ -824,7 +824,14 @@ class FederationServer(FederationBase):
context, self._room_prejoin_state_types
)
)
return {"knock_state_events": stripped_room_state}
return {
"knock_room_state": stripped_room_state,
# Since v1.37, Synapse incorrectly used "knock_state_events" for this field.
# Thus, we also populate a 'knock_state_events' with the same content to
# support old instances.
# See https://github.com/matrix-org/synapse/issues/14088.
"knock_state_events": stripped_room_state,
}
async def _on_send_membership_event(
self, origin: str, content: JsonDict, membership_type: str, room_id: str

20
synapse/handlers/federation.py
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@ -781,15 +781,27 @@ class FederationHandler:
# Send the signed event back to the room, and potentially receive some
# further information about the room in the form of partial state events
stripped_room_state = await self.federation_client.send_knock(
target_hosts, event
)
knock_response = await self.federation_client.send_knock(target_hosts, event)
# Store any stripped room state events in the "unsigned" key of the event.
# This is a bit of a hack and is cribbing off of invites. Basically we
# store the room state here and retrieve it again when this event appears
# in the invitee's sync stream. It is stripped out for all other local users.
event.unsigned["knock_room_state"] = stripped_room_state["knock_state_events"]
stripped_room_state = (
knock_response.get("knock_room_state")
# Since v1.37, Synapse incorrectly used "knock_state_events" for this field.
# Thus, we also check for a 'knock_state_events' to support old instances.
# See https://github.com/matrix-org/synapse/issues/14088.
or knock_response.get("knock_state_events")
)
if stripped_room_state is None:
raise KeyError(
"Missing 'knock_room_state' (or legacy 'knock_state_events') field in "
"send_knock response"
)
event.unsigned["knock_room_state"] = stripped_room_state
context = EventContext.for_outlier(self._storage_controllers)
stream_id = await self._federation_event_handler.persist_events_and_notify(