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Discard PDUs from invalid origins due to #1753 in 0.18.[56]

This commit is contained in:
Matthew 2017-01-07 02:13:06 +00:00
parent 2f5be2d8dc
commit e10c527930

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@ -23,6 +23,7 @@ from synapse.util.async import Linearizer
from synapse.util.logutils import log_function
from synapse.util.caches.response_cache import ResponseCache
from synapse.events import FrozenEvent
from synapse.types import get_domain_from_id
import synapse.metrics
from synapse.api.errors import AuthError, FederationError, SynapseError
@ -132,7 +133,7 @@ class FederationServer(FederationBase):
if response:
logger.debug(
"[%s] We've already responed to this request",
"[%s] We've already responded to this request",
transaction.transaction_id
)
defer.returnValue(response)
@ -475,6 +476,27 @@ class FederationServer(FederationBase):
@defer.inlineCallbacks
@log_function
def _handle_new_pdu(self, origin, pdu, get_missing=True):
# check that it's actually being sent from a valid destination to
# workaround bug #1753 in 0.18.5 and 0.18.6
if origin != get_domain_from_id(pdu.event_id):
if not (
pdu.type == 'm.room.member' and
pdu.content and
pdu.content.get("membership", None) == 'join' and
self.hs.is_mine_id(pdu.state_key)
):
logger.info(
"Discarding PDU %s from invalid origin %s",
pdu.event_id, origin
)
return
else:
logger.info(
"Accepting join PDU %s from %s",
pdu.event_id, origin
)
# We reprocess pdus when we have seen them only as outliers
existing = yield self._get_persisted_pdu(
origin, pdu.event_id, do_auth=False