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# Copyright 2019 Matrix.org Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from unittest.mock import AsyncMock
from synapse.api.errors import Codes, SynapseError
from synapse.rest import admin
from synapse.rest.client import login, room
from synapse.types import JsonDict, UserID, create_requester
from tests import unittest
class RoomComplexityTests(unittest.FederatingHomeserverTestCase):
servlets = [
admin.register_servlets,
room.register_servlets,
login.register_servlets,
]
def default_config(self) -> JsonDict:
config = super().default_config()
config["limit_remote_rooms"] = {"enabled": True, "complexity": 0.05}
return config
def test_complexity_simple(self) -> None:
u1 = self.register_user("u1", "pass")
u1_token = self.login("u1", "pass")
room_1 = self.helper.create_room_as(u1, tok=u1_token)
self.helper.send_state(
room_1, event_type="m.room.topic", body={"topic": "foo"}, tok=u1_token
)
# Get the room complexity
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
)
self.assertEqual(200, channel.code)
complexity = channel.json_body["v1"]
self.assertTrue(complexity > 0, complexity)
# Artificially raise the complexity
store = self.hs.get_datastores().main
async def get_current_state_event_counts(room_id: str) -> int:
return int(500 * 1.23)
store.get_current_state_event_counts = get_current_state_event_counts # type: ignore[assignment]
# Get the room complexity again -- make sure it's our artificial value
channel = self.make_signed_federation_request(
"GET", "/_matrix/federation/unstable/rooms/%s/complexity" % (room_1,)
)
self.assertEqual(200, channel.code)
complexity = channel.json_body["v1"]
self.assertEqual(complexity, 1.23)
def test_join_too_large(self) -> None:
u1 = self.register_user("u1", "pass")
handler = self.hs.get_room_member_handler()
fed_transport = self.hs.get_federation_transport_client()
# Mock out some things, because we don't want to test the whole join
fed_transport.client.get_json = AsyncMock(return_value={"v1": 9999}) # type: ignore[assignment]
handler.federation_handler.do_invite_join = AsyncMock( # type: ignore[assignment]
return_value=("", 1)
)
d = handler._remote_join(
create_requester(u1),
["other.example.com"],
"roomid",
UserID.from_string(u1),
{"membership": "join"},
)
self.pump()
# The request failed with a SynapseError saying the resource limit was
# exceeded.
f = self.get_failure(d, SynapseError)
self.assertEqual(f.value.code, 400, f.value)
self.assertEqual(f.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
def test_join_too_large_admin(self) -> None:
# Check whether an admin can join if option "admins_can_join" is undefined,
# this option defaults to false, so the join should fail.
u1 = self.register_user("u1", "pass", admin=True)
handler = self.hs.get_room_member_handler()
fed_transport = self.hs.get_federation_transport_client()
# Mock out some things, because we don't want to test the whole join
fed_transport.client.get_json = AsyncMock(return_value={"v1": 9999}) # type: ignore[assignment]
handler.federation_handler.do_invite_join = AsyncMock( # type: ignore[assignment]
return_value=("", 1)
)
d = handler._remote_join(
create_requester(u1),
["other.example.com"],
"roomid",
UserID.from_string(u1),
{"membership": "join"},
)
self.pump()
# The request failed with a SynapseError saying the resource limit was
# exceeded.
f = self.get_failure(d, SynapseError)
self.assertEqual(f.value.code, 400, f.value)
self.assertEqual(f.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
def test_join_too_large_once_joined(self) -> None:
u1 = self.register_user("u1", "pass")
u1_token = self.login("u1", "pass")
# Ok, this might seem a bit weird -- I want to test that we actually
# leave the room, but I don't want to simulate two servers. So, we make
# a local room, which we say we're joining remotely, even if there's no
# remote, because we mock that out. Then, we'll leave the (actually
# local) room, which will be propagated over federation in a real
# scenario.
room_1 = self.helper.create_room_as(u1, tok=u1_token)
handler = self.hs.get_room_member_handler()
fed_transport = self.hs.get_federation_transport_client()
# Mock out some things, because we don't want to test the whole join
fed_transport.client.get_json = AsyncMock(return_value=None) # type: ignore[assignment]
handler.federation_handler.do_invite_join = AsyncMock( # type: ignore[assignment]
return_value=("", 1)
)
# Artificially raise the complexity
async def get_current_state_event_counts(room_id: str) -> int:
return 600
self.hs.get_datastores().main.get_current_state_event_counts = get_current_state_event_counts # type: ignore[assignment]
d = handler._remote_join(
create_requester(u1),
["other.example.com"],
room_1,
UserID.from_string(u1),
{"membership": "join"},
)
self.pump()
# The request failed with a SynapseError saying the resource limit was
# exceeded.
f = self.get_failure(d, SynapseError)
self.assertEqual(f.value.code, 400)
self.assertEqual(f.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
class RoomComplexityAdminTests(unittest.FederatingHomeserverTestCase):
# Test the behavior of joining rooms which exceed the complexity if option
# limit_remote_rooms.admins_can_join is True.
servlets = [
admin.register_servlets,
room.register_servlets,
login.register_servlets,
]
def default_config(self) -> JsonDict:
config = super().default_config()
config["limit_remote_rooms"] = {
"enabled": True,
"complexity": 0.05,
"admins_can_join": True,
}
return config
def test_join_too_large_no_admin(self) -> None:
# A user which is not an admin should not be able to join a remote room
# which is too complex.
u1 = self.register_user("u1", "pass")
handler = self.hs.get_room_member_handler()
fed_transport = self.hs.get_federation_transport_client()
# Mock out some things, because we don't want to test the whole join
fed_transport.client.get_json = AsyncMock(return_value={"v1": 9999}) # type: ignore[assignment]
handler.federation_handler.do_invite_join = AsyncMock( # type: ignore[assignment]
return_value=("", 1)
)
d = handler._remote_join(
create_requester(u1),
["other.example.com"],
"roomid",
UserID.from_string(u1),
{"membership": "join"},
)
self.pump()
# The request failed with a SynapseError saying the resource limit was
# exceeded.
f = self.get_failure(d, SynapseError)
self.assertEqual(f.value.code, 400, f.value)
self.assertEqual(f.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
def test_join_too_large_admin(self) -> None:
# An admin should be able to join rooms where a complexity check fails.
u1 = self.register_user("u1", "pass", admin=True)
handler = self.hs.get_room_member_handler()
fed_transport = self.hs.get_federation_transport_client()
# Mock out some things, because we don't want to test the whole join
fed_transport.client.get_json = AsyncMock(return_value={"v1": 9999}) # type: ignore[assignment]
handler.federation_handler.do_invite_join = AsyncMock( # type: ignore[assignment]
return_value=("", 1)
)
d = handler._remote_join(
create_requester(u1),
["other.example.com"],
"roomid",
UserID.from_string(u1),
{"membership": "join"},
)
self.pump()
# The request success since the user is an admin
self.get_success(d)
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