forked-synapse/tests/handlers/test_room_member.py

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2022-07-19 07:45:17 -04:00
from http import HTTPStatus
from unittest.mock import Mock, patch
from twisted.test.proto_helpers import MemoryReactor
import synapse.rest.admin
import synapse.rest.client.login
import synapse.rest.client.room
from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import LimitExceededError
from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.events import FrozenEventV3
from synapse.federation.federation_client import SendJoinResult
from synapse.server import HomeServer
from synapse.types import UserID, create_requester
from synapse.util import Clock
from tests.replication._base import RedisMultiWorkerStreamTestCase
from tests.server import make_request
from tests.test_utils import make_awaitable
from tests.unittest import FederatingHomeserverTestCase, override_config
class TestJoinsLimitedByPerRoomRateLimiter(FederatingHomeserverTestCase):
servlets = [
synapse.rest.admin.register_servlets,
synapse.rest.client.login.register_servlets,
synapse.rest.client.room.register_servlets,
]
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.handler = hs.get_room_member_handler()
# Create three users.
self.alice = self.register_user("alice", "pass")
self.alice_token = self.login("alice", "pass")
self.bob = self.register_user("bob", "pass")
self.bob_token = self.login("bob", "pass")
self.chris = self.register_user("chris", "pass")
self.chris_token = self.login("chris", "pass")
# Create a room on this homeserver. Note that this counts as a join: it
# contributes to the rate limter's count of actions
self.room_id = self.helper.create_room_as(self.alice, tok=self.alice_token)
self.intially_unjoined_room_id = f"!example:{self.OTHER_SERVER_NAME}"
@override_config({"rc_joins_per_room": {"per_second": 0, "burst_count": 2}})
def test_local_user_local_joins_contribute_to_limit_and_are_limited(self) -> None:
# The rate limiter has accumulated one token from Alice's join after the create
# event.
# Try joining the room as Bob.
self.get_success(
self.handler.update_membership(
requester=create_requester(self.bob),
target=UserID.from_string(self.bob),
room_id=self.room_id,
action=Membership.JOIN,
)
)
# The rate limiter bucket is full. A second join should be denied.
self.get_failure(
self.handler.update_membership(
requester=create_requester(self.chris),
target=UserID.from_string(self.chris),
room_id=self.room_id,
action=Membership.JOIN,
),
LimitExceededError,
)
@override_config({"rc_joins_per_room": {"per_second": 0, "burst_count": 2}})
def test_local_user_profile_edits_dont_contribute_to_limit(self) -> None:
# The rate limiter has accumulated one token from Alice's join after the create
# event. Alice should still be able to change her displayname.
self.get_success(
self.handler.update_membership(
requester=create_requester(self.alice),
target=UserID.from_string(self.alice),
room_id=self.room_id,
action=Membership.JOIN,
content={"displayname": "Alice Cooper"},
)
)
# Still room in the limiter bucket. Chris's join should be accepted.
self.get_success(
self.handler.update_membership(
requester=create_requester(self.chris),
target=UserID.from_string(self.chris),
room_id=self.room_id,
action=Membership.JOIN,
)
)
@override_config({"rc_joins_per_room": {"per_second": 0, "burst_count": 1}})
def test_remote_joins_contribute_to_rate_limit(self) -> None:
# Join once, to fill the rate limiter bucket.
#
# To do this we have to mock the responses from the remote homeserver.
# We also patch out a bunch of event checks on our end. All we're really
# trying to check here is that remote joins will bump the rate limter when
# they are persisted.
create_event_source = {
"auth_events": [],
"content": {
"creator": f"@creator:{self.OTHER_SERVER_NAME}",
"room_version": self.hs.config.server.default_room_version.identifier,
},
"depth": 0,
"origin_server_ts": 0,
"prev_events": [],
"room_id": self.intially_unjoined_room_id,
"sender": f"@creator:{self.OTHER_SERVER_NAME}",
"state_key": "",
"type": EventTypes.Create,
}
self.add_hashes_and_signatures_from_other_server(
create_event_source,
self.hs.config.server.default_room_version,
)
create_event = FrozenEventV3(
create_event_source,
self.hs.config.server.default_room_version,
{},
None,
)
join_event_source = {
"auth_events": [create_event.event_id],
"content": {"membership": "join"},
"depth": 1,
"origin_server_ts": 100,
"prev_events": [create_event.event_id],
"sender": self.bob,
"state_key": self.bob,
"room_id": self.intially_unjoined_room_id,
"type": EventTypes.Member,
}
add_hashes_and_signatures(
self.hs.config.server.default_room_version,
join_event_source,
self.hs.hostname,
self.hs.signing_key,
)
join_event = FrozenEventV3(
join_event_source,
self.hs.config.server.default_room_version,
{},
None,
)
mock_make_membership_event = Mock(
return_value=make_awaitable(
(
self.OTHER_SERVER_NAME,
join_event,
self.hs.config.server.default_room_version,
)
)
)
mock_send_join = Mock(
return_value=make_awaitable(
SendJoinResult(
join_event,
self.OTHER_SERVER_NAME,
state=[create_event],
auth_chain=[create_event],
partial_state=False,
servers_in_room=[],
)
)
)
with patch.object(
self.handler.federation_handler.federation_client,
"make_membership_event",
mock_make_membership_event,
), patch.object(
self.handler.federation_handler.federation_client,
"send_join",
mock_send_join,
), patch(
"synapse.event_auth._is_membership_change_allowed",
return_value=None,
), patch(
"synapse.handlers.federation_event.check_state_dependent_auth_rules",
return_value=None,
):
self.get_success(
self.handler.update_membership(
requester=create_requester(self.bob),
target=UserID.from_string(self.bob),
room_id=self.intially_unjoined_room_id,
action=Membership.JOIN,
remote_room_hosts=[self.OTHER_SERVER_NAME],
)
)
# Try to join as Chris. Should get denied.
self.get_failure(
self.handler.update_membership(
requester=create_requester(self.chris),
target=UserID.from_string(self.chris),
room_id=self.intially_unjoined_room_id,
action=Membership.JOIN,
remote_room_hosts=[self.OTHER_SERVER_NAME],
),
LimitExceededError,
)
# TODO: test that remote joins to a room are rate limited.
# Could do this by setting the burst count to 1, then:
# - remote-joining a room
# - immediately leaving
# - trying to remote-join again.
class TestReplicatedJoinsLimitedByPerRoomRateLimiter(RedisMultiWorkerStreamTestCase):
servlets = [
synapse.rest.admin.register_servlets,
synapse.rest.client.login.register_servlets,
synapse.rest.client.room.register_servlets,
]
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.handler = hs.get_room_member_handler()
# Create three users.
self.alice = self.register_user("alice", "pass")
self.alice_token = self.login("alice", "pass")
self.bob = self.register_user("bob", "pass")
self.bob_token = self.login("bob", "pass")
self.chris = self.register_user("chris", "pass")
self.chris_token = self.login("chris", "pass")
# Create a room on this homeserver.
# Note that this counts as a
self.room_id = self.helper.create_room_as(self.alice, tok=self.alice_token)
self.intially_unjoined_room_id = "!example:otherhs"
@override_config({"rc_joins_per_room": {"per_second": 0, "burst_count": 2}})
def test_local_users_joining_on_another_worker_contribute_to_rate_limit(
self,
) -> None:
# The rate limiter has accumulated one token from Alice's join after the create
# event.
self.replicate()
# Spawn another worker and have bob join via it.
worker_app = self.make_worker_hs(
"synapse.app.generic_worker", extra_config={"worker_name": "other worker"}
)
worker_site = self._hs_to_site[worker_app]
channel = make_request(
self.reactor,
worker_site,
"POST",
f"/_matrix/client/v3/rooms/{self.room_id}/join",
access_token=self.bob_token,
)
self.assertEqual(channel.code, HTTPStatus.OK, channel.json_body)
# wait for join to arrive over replication
self.replicate()
# Try to join as Chris on the worker. Should get denied because Alice
# and Bob have both joined the room.
self.get_failure(
worker_app.get_room_member_handler().update_membership(
requester=create_requester(self.chris),
target=UserID.from_string(self.chris),
room_id=self.room_id,
action=Membership.JOIN,
),
LimitExceededError,
)
# Try to join as Chris on the original worker. Should get denied because Alice
# and Bob have both joined the room.
self.get_failure(
self.handler.update_membership(
requester=create_requester(self.chris),
target=UserID.from_string(self.chris),
room_id=self.room_id,
action=Membership.JOIN,
),
LimitExceededError,
)