synapse/tests/api/test_ratelimiting.py
Erik Johnston f21e24ffc2
Add ability for access tokens to belong to one user but grant access to another user. (#8616)
We do it this way round so that only the "owner" can delete the access token (i.e. `/logout/all` by the "owner" also deletes that token, but `/logout/all` by the "target user" doesn't).

A future PR will add an API for creating such a token.

When the target user and authenticated entity are different the `Processed request` log line will be logged with a: `{@admin:server as @bob:server} ...`. I'm not convinced by that format (especially since it adds spaces in there, making it harder to use `cut -d ' '` to chop off the start of log lines). Suggestions welcome.
2020-10-29 15:58:44 +00:00

170 lines
6.5 KiB
Python

from synapse.api.ratelimiting import LimitExceededError, Ratelimiter
from synapse.appservice import ApplicationService
from synapse.types import create_requester
from tests import unittest
class TestRatelimiter(unittest.TestCase):
def test_allowed_via_can_do_action(self):
limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1)
allowed, time_allowed = limiter.can_do_action(key="test_id", _time_now_s=0)
self.assertTrue(allowed)
self.assertEquals(10.0, time_allowed)
allowed, time_allowed = limiter.can_do_action(key="test_id", _time_now_s=5)
self.assertFalse(allowed)
self.assertEquals(10.0, time_allowed)
allowed, time_allowed = limiter.can_do_action(key="test_id", _time_now_s=10)
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, sender="@as:example.com",
)
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, sender="@as:example.com",
)
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)
# Shouldn't raise
limiter.ratelimit(key="test_id", _time_now_s=0)
# Should raise
with self.assertRaises(LimitExceededError) as context:
limiter.ratelimit(key="test_id", _time_now_s=5)
self.assertEqual(context.exception.retry_after_ms, 5000)
# Shouldn't raise
limiter.ratelimit(key="test_id", _time_now_s=10)
def test_allowed_via_can_do_action_and_overriding_parameters(self):
"""Test that we can override options of can_do_action that would otherwise fail
an action
"""
# Create a Ratelimiter with a very low allowed rate_hz and burst_count
limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1)
# First attempt should be allowed
allowed, time_allowed = limiter.can_do_action(("test_id",), _time_now_s=0,)
self.assertTrue(allowed)
self.assertEqual(10.0, time_allowed)
# Second attempt, 1s later, will fail
allowed, time_allowed = limiter.can_do_action(("test_id",), _time_now_s=1,)
self.assertFalse(allowed)
self.assertEqual(10.0, time_allowed)
# But, if we allow 10 actions/sec for this request, we should be allowed
# to continue.
allowed, time_allowed = limiter.can_do_action(
("test_id",), _time_now_s=1, rate_hz=10.0
)
self.assertTrue(allowed)
self.assertEqual(1.1, time_allowed)
# Similarly if we allow a burst of 10 actions
allowed, time_allowed = limiter.can_do_action(
("test_id",), _time_now_s=1, burst_count=10
)
self.assertTrue(allowed)
self.assertEqual(1.0, time_allowed)
def test_allowed_via_ratelimit_and_overriding_parameters(self):
"""Test that we can override options of the ratelimit method that would otherwise
fail an action
"""
# Create a Ratelimiter with a very low allowed rate_hz and burst_count
limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1)
# First attempt should be allowed
limiter.ratelimit(key=("test_id",), _time_now_s=0)
# Second attempt, 1s later, will fail
with self.assertRaises(LimitExceededError) as context:
limiter.ratelimit(key=("test_id",), _time_now_s=1)
self.assertEqual(context.exception.retry_after_ms, 9000)
# But, if we allow 10 actions/sec for this request, we should be allowed
# to continue.
limiter.ratelimit(key=("test_id",), _time_now_s=1, rate_hz=10.0)
# Similarly if we allow a burst of 10 actions
limiter.ratelimit(key=("test_id",), _time_now_s=1, burst_count=10)
def test_pruning(self):
limiter = Ratelimiter(clock=None, rate_hz=0.1, burst_count=1)
limiter.can_do_action(key="test_id_1", _time_now_s=0)
self.assertIn("test_id_1", limiter.actions)
limiter.can_do_action(key="test_id_2", _time_now_s=10)
self.assertNotIn("test_id_1", limiter.actions)