From 0d63d93ca834771324f0c5b9340346ad2113a4b1 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Wed, 25 Jul 2018 22:25:41 +0100 Subject: Enforce compatibility when processing make_join requests Reject make_join requests from servers which do not support the room version. Also include the room version in the response. --- synapse/api/errors.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'synapse/api') diff --git a/synapse/api/errors.py b/synapse/api/errors.py index 477ca07a24..70400347bc 100644 --- a/synapse/api/errors.py +++ b/synapse/api/errors.py @@ -58,6 +58,7 @@ class Codes(object): CANNOT_LEAVE_SERVER_NOTICE_ROOM = "M_CANNOT_LEAVE_SERVER_NOTICE_ROOM" MAU_LIMIT_EXCEEDED = "M_MAU_LIMIT_EXCEEDED" UNSUPPORTED_ROOM_VERSION = "M_UNSUPPORTED_ROOM_VERSION" + INCOMPATIBLE_ROOM_VERSION = "M_INCOMPATIBLE_ROOM_VERSION" class CodeMessageException(RuntimeError): @@ -287,6 +288,27 @@ class LimitExceededError(SynapseError): ) +class IncompatibleRoomVersionError(SynapseError): + """A server is trying to join a room whose version it does not support.""" + + def __init__(self, room_version): + super(IncompatibleRoomVersionError, self).__init__( + code=400, + msg="Your homeserver does not support the features required to " + "join this room", + errcode=Codes.INCOMPATIBLE_ROOM_VERSION, + ) + + self._room_version = room_version + + def error_dict(self): + return cs_error( + self.msg, + self.errcode, + room_version=self._room_version, + ) + + def cs_error(msg, code=Codes.UNKNOWN, **kwargs): """ Utility method for constructing an error response for client-server interactions. -- cgit 1.4.1