diff options
| -rw-r--r-- | changelog.d/8139.bugfix | 1 | ||||
| -rw-r--r-- | synapse/api/ratelimiting.py | 37 | ||||
| -rw-r--r-- | synapse/handlers/room_member.py | 14 | ||||
| -rw-r--r-- | tests/api/test_ratelimiting.py | 73 |
4 files changed, 119 insertions, 6 deletions
diff --git a/changelog.d/8139.bugfix b/changelog.d/8139.bugfix new file mode 100644 index 0000000000..21f65d87b7 --- /dev/null +++ b/changelog.d/8139.bugfix @@ -0,0 +1 @@ +Fixes a bug where appservices with ratelimiting disabled would still be ratelimited when joining rooms. This bug was introduced in v1.19.0. diff --git a/synapse/api/ratelimiting.py b/synapse/api/ratelimiting.py index ec6b3a69a2..e62ae50ac2 100644 --- a/synapse/api/ratelimiting.py +++ b/synapse/api/ratelimiting.py @@ -17,6 +17,7 @@ from collections import OrderedDict from typing import Any, Optional, Tuple from synapse.api.errors import LimitExceededError +from synapse.types import Requester from synapse.util import Clock @@ -43,6 +44,42 @@ class Ratelimiter(object): # * The rate_hz of this particular entry. This can vary per request self.actions = OrderedDict() # type: OrderedDict[Any, Tuple[float, int, float]] + def can_requester_do_action( + self, + requester: Requester, + rate_hz: Optional[float] = None, + burst_count: Optional[int] = None, + update: bool = True, + _time_now_s: Optional[int] = None, + ) -> Tuple[bool, float]: + """Can the requester perform the action? + + Args: + requester: The requester to key off when rate limiting. The user property + will be used. + rate_hz: The long term number of actions that can be performed in a second. + Overrides the value set during instantiation if set. + burst_count: How many actions that can be performed before being limited. + Overrides the value set during instantiation if set. + update: Whether to count this check as performing the action + _time_now_s: The current time. Optional, defaults to the current time according + to self.clock. Only used by tests. + + Returns: + A tuple containing: + * A bool indicating if they can perform the action now + * The reactor timestamp for when the action can be performed next. + -1 if rate_hz is less than or equal to zero + """ + # Disable rate limiting of users belonging to any AS that is configured + # not to be rate limited in its registration file (rate_limited: true|false). + if requester.app_service and not requester.app_service.is_rate_limited(): + return True, -1.0 + + return self.can_do_action( + requester.user.to_string(), rate_hz, burst_count, update, _time_now_s + ) + def can_do_action( self, key: Any, diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 31705cdbdb..0cd59bce3b 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -459,9 +459,10 @@ class RoomMemberHandler(object): if is_host_in_room: time_now_s = self.clock.time() - allowed, time_allowed = self._join_rate_limiter_local.can_do_action( - requester.user.to_string(), - ) + ( + allowed, + time_allowed, + ) = self._join_rate_limiter_local.can_requester_do_action(requester,) if not allowed: raise LimitExceededError( @@ -470,9 +471,10 @@ class RoomMemberHandler(object): else: time_now_s = self.clock.time() - allowed, time_allowed = self._join_rate_limiter_remote.can_do_action( - requester.user.to_string(), - ) + ( + allowed, + time_allowed, + ) = self._join_rate_limiter_remote.can_requester_do_action(requester,) if not allowed: raise LimitExceededError( diff --git a/tests/api/test_ratelimiting.py b/tests/api/test_ratelimiting.py index d580e729c5..1e1f30d790 100644 --- a/tests/api/test_ratelimiting.py +++ b/tests/api/test_ratelimiting.py @@ -1,4 +1,6 @@ from synapse.api.ratelimiting import LimitExceededError, Ratelimiter +from synapse.appservice import ApplicationService +from synapse.types import create_requester from tests import unittest @@ -18,6 +20,77 @@ class TestRatelimiter(unittest.TestCase): self.assertTrue(allowed) self.assertEquals(20.0, time_allowed) + def test_allowed_user_via_can_requester_do_action(self): + user_requester = create_requester("@user:example.com") + limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1) + allowed, time_allowed = limiter.can_requester_do_action( + user_requester, _time_now_s=0 + ) + self.assertTrue(allowed) + self.assertEquals(10.0, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + user_requester, _time_now_s=5 + ) + self.assertFalse(allowed) + self.assertEquals(10.0, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + user_requester, _time_now_s=10 + ) + self.assertTrue(allowed) + self.assertEquals(20.0, time_allowed) + + def test_allowed_appservice_ratelimited_via_can_requester_do_action(self): + appservice = ApplicationService( + None, "example.com", id="foo", rate_limited=True, + ) + as_requester = create_requester("@user:example.com", app_service=appservice) + + limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1) + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=0 + ) + self.assertTrue(allowed) + self.assertEquals(10.0, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=5 + ) + self.assertFalse(allowed) + self.assertEquals(10.0, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=10 + ) + self.assertTrue(allowed) + self.assertEquals(20.0, time_allowed) + + def test_allowed_appservice_via_can_requester_do_action(self): + appservice = ApplicationService( + None, "example.com", id="foo", rate_limited=False, + ) + as_requester = create_requester("@user:example.com", app_service=appservice) + + limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1) + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=0 + ) + self.assertTrue(allowed) + self.assertEquals(-1, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=5 + ) + self.assertTrue(allowed) + self.assertEquals(-1, time_allowed) + + allowed, time_allowed = limiter.can_requester_do_action( + as_requester, _time_now_s=10 + ) + self.assertTrue(allowed) + self.assertEquals(-1, time_allowed) + def test_allowed_via_ratelimit(self): limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1) |