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68a6717312
Invalid mentions data received over the Client-Server API should be rejected with a 400 error. This will hopefully stop clients from sending invalid data, although does not help with data received over federation.
433 lines
16 KiB
Python
433 lines
16 KiB
Python
# Copyright 2022 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from typing import Any, Optional
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from unittest.mock import patch
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from parameterized import parameterized
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from twisted.test.proto_helpers import MemoryReactor
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from synapse.api.constants import EventContentFields, RelationTypes
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from synapse.api.room_versions import RoomVersions
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from synapse.push.bulk_push_rule_evaluator import BulkPushRuleEvaluator
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from synapse.rest import admin
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from synapse.rest.client import login, register, room
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from synapse.server import HomeServer
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from synapse.types import JsonDict, create_requester
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from synapse.util import Clock
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from tests.test_utils import simple_async_mock
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from tests.unittest import HomeserverTestCase, override_config
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class TestBulkPushRuleEvaluator(HomeserverTestCase):
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servlets = [
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admin.register_servlets_for_client_rest_resource,
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room.register_servlets,
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login.register_servlets,
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register.register_servlets,
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]
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def prepare(
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self, reactor: MemoryReactor, clock: Clock, homeserver: HomeServer
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) -> None:
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# Create a new user and room.
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self.alice = self.register_user("alice", "pass")
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self.token = self.login(self.alice, "pass")
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self.requester = create_requester(self.alice)
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self.room_id = self.helper.create_room_as(
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# This is deliberately set to V9, because we want to test the logic which
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# handles stringy power levels. Stringy power levels were outlawed in V10.
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self.alice,
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room_version=RoomVersions.V9.identifier,
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tok=self.token,
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)
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self.event_creation_handler = self.hs.get_event_creation_handler()
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@parameterized.expand(
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[
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# The historically-permitted bad values. Alice's notification should be
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# allowed if this threshold is at or below her power level (60)
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("100", False),
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("0", True),
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(12.34, True),
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(60.0, True),
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(67.89, False),
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# Values that int(...) would not successfully cast should be ignored.
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# The room notification level should then default to 50, per the spec, so
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# Alice's notification is allowed.
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(None, True),
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# We haven't seen `"room": []` or `"room": {}` in the wild (yet), but
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# let's check them for paranoia's sake.
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([], True),
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({}, True),
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]
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)
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def test_action_for_event_by_user_handles_noninteger_room_power_levels(
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self, bad_room_level: object, should_permit: bool
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) -> None:
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"""We should convert strings in `room` to integers before passing to Rust.
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Test this as follows:
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- Create a room as Alice and invite two other users Bob and Charlie.
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- Set PLs so that Alice has PL 60 and `notifications.room` is set to a bad value.
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- Have Alice create a message notifying @room.
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- Evaluate notification actions for that message. This should not raise.
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- Look in the DB to see if that message triggered a highlight for Bob.
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The test is parameterised with two arguments:
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- the bad power level value for "room", before JSON serisalistion
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- whether Bob should expect the message to be highlighted
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Reproduces #14060.
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A lack of validation: the gift that keeps on giving.
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"""
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# Join another user to the room, so that there is someone to see Alice's
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# @room notification.
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bob = self.register_user("bob", "pass")
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bob_token = self.login(bob, "pass")
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self.helper.join(self.room_id, bob, tok=bob_token)
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# Alter the power levels in that room to include the bad @room notification
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# level. We need to suppress
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#
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# - canonicaljson validation, because canonicaljson forbids floats;
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# - the event jsonschema validation, because it will forbid bad values; and
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# - the auth rules checks, because they stop us from creating power levels
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# with `"room": null`. (We want to test this case, because we have seen it
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# in the wild.)
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#
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# We have seen stringy and null values for "room" in the wild, so presumably
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# some of this validation was missing in the past.
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with patch("synapse.events.validator.validate_canonicaljson"), patch(
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"synapse.events.validator.jsonschema.validate"
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), patch("synapse.handlers.event_auth.check_state_dependent_auth_rules"):
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pl_event_id = self.helper.send_state(
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self.room_id,
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"m.room.power_levels",
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{
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"users": {self.alice: 60},
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"notifications": {"room": bad_room_level},
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},
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self.token,
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state_key="",
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)["event_id"]
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# Create a new message event, and try to evaluate it under the dodgy
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# power level event.
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event, unpersisted_context = self.get_success(
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self.event_creation_handler.create_event(
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self.requester,
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{
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"type": "m.room.message",
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"room_id": self.room_id,
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"content": {
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"msgtype": "m.text",
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"body": "helo @room",
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},
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"sender": self.alice,
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},
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prev_event_ids=[pl_event_id],
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)
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)
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context = self.get_success(unpersisted_context.persist(event))
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bulk_evaluator = BulkPushRuleEvaluator(self.hs)
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# should not raise
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self.get_success(bulk_evaluator.action_for_events_by_user([(event, context)]))
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# Did Bob see Alice's @room notification?
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highlighted_actions = self.get_success(
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self.hs.get_datastores().main.db_pool.simple_select_list(
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table="event_push_actions_staging",
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keyvalues={
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"event_id": event.event_id,
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"user_id": bob,
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"highlight": 1,
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},
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retcols=("*",),
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desc="get_event_push_actions_staging",
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)
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)
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self.assertEqual(len(highlighted_actions), int(should_permit))
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@override_config({"push": {"enabled": False}})
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def test_action_for_event_by_user_disabled_by_config(self) -> None:
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"""Ensure that push rules are not calculated when disabled in the config"""
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# Create a new message event which should cause a notification.
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event, unpersisted_context = self.get_success(
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self.event_creation_handler.create_event(
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self.requester,
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{
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"type": "m.room.message",
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"room_id": self.room_id,
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"content": {
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"msgtype": "m.text",
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"body": "helo",
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},
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"sender": self.alice,
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},
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)
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)
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context = self.get_success(unpersisted_context.persist(event))
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bulk_evaluator = BulkPushRuleEvaluator(self.hs)
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# Mock the method which calculates push rules -- we do this instead of
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# e.g. checking the results in the database because we want to ensure
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# that code isn't even running.
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bulk_evaluator._action_for_event_by_user = simple_async_mock() # type: ignore[assignment]
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# Ensure no actions are generated!
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self.get_success(bulk_evaluator.action_for_events_by_user([(event, context)]))
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bulk_evaluator._action_for_event_by_user.assert_not_called()
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def _create_and_process(
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self, bulk_evaluator: BulkPushRuleEvaluator, content: Optional[JsonDict] = None
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) -> bool:
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"""Returns true iff the `mentions` trigger an event push action."""
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# Create a new message event which should cause a notification.
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event, unpersisted_context = self.get_success(
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self.event_creation_handler.create_event(
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self.requester,
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{
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"type": "test",
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"room_id": self.room_id,
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"content": content or {},
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"sender": f"@bob:{self.hs.hostname}",
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},
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)
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)
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context = self.get_success(unpersisted_context.persist(event))
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# Execute the push rule machinery.
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self.get_success(bulk_evaluator.action_for_events_by_user([(event, context)]))
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# If any actions are generated for this event, return true.
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result = self.get_success(
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self.hs.get_datastores().main.db_pool.simple_select_list(
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table="event_push_actions_staging",
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keyvalues={"event_id": event.event_id},
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retcols=("*",),
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desc="get_event_push_actions_staging",
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)
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)
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return len(result) > 0
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@override_config({"experimental_features": {"msc3952_intentional_mentions": True}})
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def test_user_mentions(self) -> None:
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"""Test the behavior of an event which includes invalid user mentions."""
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bulk_evaluator = BulkPushRuleEvaluator(self.hs)
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# Not including the mentions field should not notify.
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self.assertFalse(self._create_and_process(bulk_evaluator))
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# An empty mentions field should not notify.
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator, {EventContentFields.MSC3952_MENTIONS: {}}
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)
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)
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# Non-dict mentions should be ignored.
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#
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# Avoid C-S validation as these aren't expected.
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with patch(
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"synapse.events.validator.EventValidator.validate_new",
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new=lambda s, event, config: True,
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):
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mentions: Any
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for mentions in (None, True, False, 1, "foo", []):
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator, {EventContentFields.MSC3952_MENTIONS: mentions}
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)
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)
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# A non-list should be ignored.
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for mentions in (None, True, False, 1, "foo", {}):
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{EventContentFields.MSC3952_MENTIONS: {"user_ids": mentions}},
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)
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)
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# The Matrix ID appearing anywhere in the list should notify.
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self.assertTrue(
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self._create_and_process(
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bulk_evaluator,
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{EventContentFields.MSC3952_MENTIONS: {"user_ids": [self.alice]}},
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)
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)
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self.assertTrue(
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self._create_and_process(
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bulk_evaluator,
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{
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EventContentFields.MSC3952_MENTIONS: {
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"user_ids": ["@another:test", self.alice]
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}
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},
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)
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)
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# Duplicate user IDs should notify.
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self.assertTrue(
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self._create_and_process(
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bulk_evaluator,
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{
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EventContentFields.MSC3952_MENTIONS: {
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"user_ids": [self.alice, self.alice]
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}
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},
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)
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)
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# Invalid entries in the list are ignored.
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#
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# Avoid C-S validation as these aren't expected.
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with patch(
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"synapse.events.validator.EventValidator.validate_new",
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new=lambda s, event, config: True,
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):
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{
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EventContentFields.MSC3952_MENTIONS: {
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"user_ids": [None, True, False, {}, []]
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}
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},
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)
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)
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self.assertTrue(
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self._create_and_process(
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bulk_evaluator,
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{
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EventContentFields.MSC3952_MENTIONS: {
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"user_ids": [None, True, False, {}, [], self.alice]
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}
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},
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)
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)
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# The legacy push rule should not mention if the mentions field exists.
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{
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"body": self.alice,
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"msgtype": "m.text",
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EventContentFields.MSC3952_MENTIONS: {},
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},
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)
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)
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@override_config({"experimental_features": {"msc3952_intentional_mentions": True}})
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def test_room_mentions(self) -> None:
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"""Test the behavior of an event which includes invalid room mentions."""
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bulk_evaluator = BulkPushRuleEvaluator(self.hs)
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# Room mentions from those without power should not notify.
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator, {EventContentFields.MSC3952_MENTIONS: {"room": True}}
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)
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)
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# Room mentions from those with power should notify.
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self.helper.send_state(
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self.room_id,
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"m.room.power_levels",
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{"notifications": {"room": 0}},
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self.token,
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state_key="",
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)
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self.assertTrue(
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self._create_and_process(
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bulk_evaluator, {EventContentFields.MSC3952_MENTIONS: {"room": True}}
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)
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)
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# Invalid data should not notify.
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#
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# Avoid C-S validation as these aren't expected.
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with patch(
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"synapse.events.validator.EventValidator.validate_new",
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new=lambda s, event, config: True,
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):
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mentions: Any
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for mentions in (None, False, 1, "foo", [], {}):
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{EventContentFields.MSC3952_MENTIONS: {"room": mentions}},
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)
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)
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# The legacy push rule should not mention if the mentions field exists.
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{
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"body": "@room",
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"msgtype": "m.text",
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EventContentFields.MSC3952_MENTIONS: {},
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},
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)
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)
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@override_config({"experimental_features": {"msc3958_supress_edit_notifs": True}})
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def test_suppress_edits(self) -> None:
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"""Under the default push rules, event edits should not generate notifications."""
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bulk_evaluator = BulkPushRuleEvaluator(self.hs)
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# Create & persist an event to use as the parent of the relation.
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event, unpersisted_context = self.get_success(
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self.event_creation_handler.create_event(
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self.requester,
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{
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"type": "m.room.message",
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"room_id": self.room_id,
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"content": {
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"msgtype": "m.text",
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"body": "helo",
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},
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"sender": self.alice,
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},
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)
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)
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context = self.get_success(unpersisted_context.persist(event))
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self.get_success(
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self.event_creation_handler.handle_new_client_event(
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self.requester, events_and_context=[(event, context)]
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)
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)
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# Room mentions from those without power should not notify.
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self.assertFalse(
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self._create_and_process(
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bulk_evaluator,
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{
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"body": self.alice,
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"m.relates_to": {
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"rel_type": RelationTypes.REPLACE,
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"event_id": event.event_id,
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},
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},
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)
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)
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