diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py
index a400091db7..5188b7f0db 100644
--- a/synapse/federation/federation_base.py
+++ b/synapse/federation/federation_base.py
@@ -20,7 +20,7 @@ import six
from twisted.internet import defer
from twisted.internet.defer import DeferredList
-from synapse.api.constants import KNOWN_ROOM_VERSIONS, MAX_DEPTH, EventTypes, Membership
+from synapse.api.constants import MAX_DEPTH, EventTypes, Membership, RoomVersions
from synapse.api.errors import Codes, SynapseError
from synapse.crypto.event_signing import check_event_content_hash
from synapse.events import event_type_from_format_version
@@ -274,7 +274,10 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
# now let's look for events where the sender's domain is different to the
# event id's domain (normally only the case for joins/leaves), and add additional
# checks. Only do this if the room version has a concept of event ID domain
- if room_version in KNOWN_ROOM_VERSIONS:
+ if room_version in (
+ RoomVersions.V1, RoomVersions.V2, RoomVersions.VDH_TEST,
+ RoomVersions.STATE_V2_TEST,
+ ):
pdus_to_check_event_id = [
p for p in pdus_to_check
if p.sender_domain != get_domain_from_id(p.pdu.event_id)
@@ -287,6 +290,10 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
for p, d in zip(pdus_to_check_event_id, more_deferreds):
p.deferreds.append(d)
+ elif room_version in (RoomVersions.V3,):
+ pass # No further checks needed, as event IDs are hashes here
+ else:
+ raise RuntimeError("Unrecognized room version %s" % (room_version,))
# replace lists of deferreds with single Deferreds
return [_flatten_deferred_list(p.deferreds) for p in pdus_to_check]
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