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Merge remote-tracking branch 'origin/release-v0.20.0' into develop

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This commit is contained in:
Richard van der Hoff 2017-04-03 16:23:23 +01:00
commit 2d05eb3cf5
2 changed files with 19 additions and 5 deletions
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8
synapse/federation/federation_server.py
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@ -146,11 +146,15 @@ class FederationServer(FederationBase):
# check that it's actually being sent from a valid destination to # check that it's actually being sent from a valid destination to
# workaround bug #1753 in 0.18.5 and 0.18.6 # workaround bug #1753 in 0.18.5 and 0.18.6
if transaction.origin != get_domain_from_id(pdu.event_id): if transaction.origin != get_domain_from_id(pdu.event_id):
# We continue to accept join events from any server; this is
# necessary for the federation join dance to work correctly.
# (When we join over federation, the "helper" server is
# responsible for sending out the join event, rather than the
# origin. See bug #1893).
if not ( if not (
pdu.type == 'm.room.member' and pdu.type == 'm.room.member' and
pdu.content and pdu.content and
pdu.content.get("membership", None) == 'join' and pdu.content.get("membership", None) == 'join'
self.hs.is_mine_id(pdu.state_key)
): ):
logger.info( logger.info(
"Discarding PDU %s from invalid origin %s", "Discarding PDU %s from invalid origin %s",

16
synapse/handlers/federation.py
View File

@ -1004,9 +1004,19 @@ class FederationHandler(BaseHandler):
) )
event.internal_metadata.outlier = False event.internal_metadata.outlier = False
# Send this event on behalf of the origin server since they may not # Send this event on behalf of the origin server.
# have an up to data view of the state of the room at this event so #
# will not know which servers to send the event to. # The reasons we have the destination server rather than the origin
# server send it are slightly mysterious: the origin server should have
# all the neccessary state once it gets the response to the send_join,
# so it could send the event itself if it wanted to. It may be that
# doing it this way reduces failure modes, or avoids certain attacks
# where a new server selectively tells a subset of the federation that
# it has joined.
#
# The fact is that, as of the current writing, Synapse doesn't send out
# the join event over federation after joining, and changing it now
# would introduce the danger of backwards-compatibility problems.
event.internal_metadata.send_on_behalf_of = origin event.internal_metadata.send_on_behalf_of = origin
context, event_stream_id, max_stream_id = yield self._handle_new_event( context, event_stream_id, max_stream_id = yield self._handle_new_event(