GET /rooms/ROOM/state/TYPE and /rooms/ROOM/state/TYPE/STATE_KEY accept unspecced format query parameter

[DMRobertson]

Here:

synapse/synapse/rest/client/room.py

Lines 227 to 254 in 719488d

	@cancellable
	async def on_GET(
	self, request: SynapseRequest, room_id: str, event_type: str, state_key: str
	) -> Tuple[int, JsonDict]:
	requester = await self.auth.get_user_by_req(request, allow_guest=True)
	format = parse_string(
	request, "format", default="content", allowed_values=["content", "event"]
	)
	msg_handler = self.message_handler
	data = await msg_handler.get_room_data(
	requester=requester,
	room_id=room_id,
	event_type=event_type,
	state_key=state_key,
	)
	if not data:
	raise SynapseError(404, "Event not found.", errcode=Codes.NOT_FOUND)
	if format == "event":
	event = format_event_for_client_v2(data.get_dict())
	return 200, event
	elif format == "content":
	return 200, data.get_dict()["content"]
	# Format must be event or content, per the parse_string call above.
	raise RuntimeError(f"Unknown format: {format:r}.")

Not mentioned in

• https://spec.matrix.org/v1.4/client-server-api/#get_matrixclientv3roomsroomidstate
• https://spec.matrix.org/v1.4/client-server-api/#get_matrixclientv3roomsroomidstateeventtypestatekey

[DMRobertson]

Oh, it seems like we actually want to spec this? matrix-org/matrix-spec#1047. Never mind then.