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Rate limiting invites per issuer (#13125)

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Co-authored-by: reivilibre <oliverw@matrix.org>
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David Teller 2022-06-30 11:44:47 +02:00 committed by GitHub
parent 4d3b8fb23f
commit 80c7a06777
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3 changed files with 24 additions and 2 deletions
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1
changelog.d/13125.feature Normal file
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@ -0,0 +1 @@
Add a rate limit for local users sending invites.

5
synapse/config/ratelimiting.py
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@ -136,6 +136,11 @@ class RatelimitConfig(Config):
defaults={"per_second": 0.003, "burst_count": 5},
)
self.rc_invites_per_issuer = RateLimitConfig(
config.get("rc_invites", {}).get("per_issuer", {}),
defaults={"per_second": 0.3, "burst_count": 10},
)
self.rc_third_party_invite = RateLimitConfig(
config.get("rc_third_party_invite", {}),
defaults={

20
synapse/handlers/room_member.py
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@ -101,19 +101,33 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
burst_count=hs.config.ratelimiting.rc_joins_remote.burst_count,
)
# Ratelimiter for invites, keyed by room (across all issuers, all
# recipients).
self._invites_per_room_limiter = Ratelimiter(
store=self.store,
clock=self.clock,
rate_hz=hs.config.ratelimiting.rc_invites_per_room.per_second,
burst_count=hs.config.ratelimiting.rc_invites_per_room.burst_count,
)
self._invites_per_user_limiter = Ratelimiter(
# Ratelimiter for invites, keyed by recipient (across all rooms, all
# issuers).
self._invites_per_recipient_limiter = Ratelimiter(
store=self.store,
clock=self.clock,
rate_hz=hs.config.ratelimiting.rc_invites_per_user.per_second,
burst_count=hs.config.ratelimiting.rc_invites_per_user.burst_count,
)
# Ratelimiter for invites, keyed by issuer (across all rooms, all
# recipients).
self._invites_per_issuer_limiter = Ratelimiter(
store=self.store,
clock=self.clock,
rate_hz=hs.config.ratelimiting.rc_invites_per_issuer.per_second,
burst_count=hs.config.ratelimiting.rc_invites_per_issuer.burst_count,
)
self._third_party_invite_limiter = Ratelimiter(
store=self.store,
clock=self.clock,
@ -258,7 +272,9 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
if room_id:
await self._invites_per_room_limiter.ratelimit(requester, room_id)
await self._invites_per_user_limiter.ratelimit(requester, invitee_user_id)
await self._invites_per_recipient_limiter.ratelimit(requester, invitee_user_id)
if requester is not None:
await self._invites_per_issuer_limiter.ratelimit(requester)
async def _local_membership_update(
self,