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Rate limit joins per-room (#13276)

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David Robertson 2022-07-19 12:45:17 +01:00 • committed by GitHub
parent 2ee0b6ef4b
commit b977867358
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18 changed files with 498 additions and 15 deletions
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16
synapse/federation/federation_server.py
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@ -118,6 +118,7 @@ class FederationServer(FederationBase):
self._federation_event_handler = hs.get_federation_event_handler()
self.state = hs.get_state_handler()
self._event_auth_handler = hs.get_event_auth_handler()
self._room_member_handler = hs.get_room_member_handler()
self._state_storage_controller = hs.get_storage_controllers().state
@ -621,6 +622,15 @@ class FederationServer(FederationBase):
)
raise IncompatibleRoomVersionError(room_version=room_version)
# Refuse the request if that room has seen too many joins recently.
# This is in addition to the HS-level rate limiting applied by
# BaseFederationServlet.
# type-ignore: mypy doesn't seem able to deduce the type of the limiter(!?)
await self._room_member_handler._join_rate_per_room_limiter.ratelimit( # type: ignore[has-type]
requester=None,
key=room_id,
update=False,
)
pdu = await self.handler.on_make_join_request(origin, room_id, user_id)
return {"event": pdu.get_templated_pdu_json(), "room_version": room_version}
@ -655,6 +665,12 @@ class FederationServer(FederationBase):
room_id: str,
caller_supports_partial_state: bool = False,
) -> Dict[str, Any]:
await self._room_member_handler._join_rate_per_room_limiter.ratelimit( # type: ignore[has-type]
requester=None,
key=room_id,
update=False,
)
event, context = await self._on_send_membership_event(
origin, content, Membership.JOIN, room_id
)