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Strip "join_authorised_via_users_server" from join events which do not need it. (#10933)

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This fixes a "Event not signed by authorising server" error when
transition room member from join -> join, e.g. when updating a
display name or avatar URL for restricted rooms.
This commit is contained in:
Patrick Cloke 2021-09-30 11:13:59 -04:00 • committed by GitHub
parent 7d84d2523a
commit d1bf5f7c9d
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11 changed files with 46 additions and 25 deletions
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6
synapse/federation/federation_base.py
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@ -15,7 +15,7 @@
import logging
from collections import namedtuple
from synapse.api.constants import MAX_DEPTH, EventTypes, Membership
from synapse.api.constants import MAX_DEPTH, EventContentFields, EventTypes, Membership
from synapse.api.errors import Codes, SynapseError
from synapse.api.room_versions import EventFormatVersions, RoomVersion
from synapse.crypto.event_signing import check_event_content_hash
@ -184,10 +184,10 @@ async def _check_sigs_on_pdu(
room_version.msc3083_join_rules
and pdu.type == EventTypes.Member
and pdu.membership == Membership.JOIN
and "join_authorised_via_users_server" in pdu.content
and EventContentFields.AUTHORISING_USER in pdu.content
):
authorising_server = get_domain_from_id(
pdu.content["join_authorised_via_users_server"]
pdu.content[EventContentFields.AUTHORISING_USER]
)
try:
await keyring.verify_event_for_server(