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synapse/tests/test_visibility.py

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#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import logging
from typing import Optional
from unittest.mock import patch
from synapse.api.constants import EventUnsignedContentFields
from synapse.api.room_versions import RoomVersions
from synapse.events import EventBase, make_event_from_dict
from synapse.events.snapshot import EventContext
from synapse.rest import admin
from synapse.rest.client import login, room
from synapse.server import HomeServer
from synapse.types import create_requester
from synapse.visibility import filter_events_for_client, filter_events_for_server
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from tests import unittest
from tests.test_utils.event_injection import inject_event, inject_member_event
from tests.unittest import HomeserverTestCase
from tests.utils import create_room
logger = logging.getLogger(__name__)
TEST_ROOM_ID = "!TEST:ROOM"
class FilterEventsForServerTestCase(unittest.HomeserverTestCase):
def setUp(self) -> None:
super().setUp()
self.event_creation_handler = self.hs.get_event_creation_handler()
self.event_builder_factory = self.hs.get_event_builder_factory()
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self._storage_controllers = self.hs.get_storage_controllers()
assert self._storage_controllers.persistence is not None
self._persistence = self._storage_controllers.persistence
self.get_success(create_room(self.hs, TEST_ROOM_ID, "@someone:ROOM"))
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def test_filtering(self) -> None:
#
# The events to be filtered consist of 10 membership events (it doesn't
# really matter if they are joins or leaves, so let's make them joins).
# One of those membership events is going to be for a user on the
# server we are filtering for (so we can check the filtering is doing
# the right thing).
#
# before we do that, we persist some other events to act as state.
self.get_success(
inject_visibility_event(self.hs, TEST_ROOM_ID, "@admin:hs", "joined")
)
for i in range(10):
self.get_success(
inject_member_event(
self.hs,
TEST_ROOM_ID,
"@resident%i:hs" % i,
"join",
)
)
events_to_filter = []
for i in range(10):
evt = self.get_success(
inject_member_event(
self.hs,
TEST_ROOM_ID,
"@user%i:%s" % (i, "test_server" if i == 5 else "other_server"),
"join",
extra_content={"a": "b"},
)
)
events_to_filter.append(evt)
filtered = self.get_success(
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filter_events_for_server(
self._storage_controllers,
"test_server",
"hs",
events_to_filter,
redact=True,
filter_out_erased_senders=True,
filter_out_remote_partial_state_events=True,
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)
)
# the result should be 5 redacted events, and 5 unredacted events.
for i in range(5):
self.assertEqual(events_to_filter[i].event_id, filtered[i].event_id)
self.assertNotIn("a", filtered[i].content)
for i in range(5, 10):
self.assertEqual(events_to_filter[i].event_id, filtered[i].event_id)
self.assertEqual(filtered[i].content["a"], "b")
def test_filter_outlier(self) -> None:
# outlier events must be returned, for the good of the collective federation
self.get_success(
inject_member_event(
self.hs,
TEST_ROOM_ID,
"@resident:remote_hs",
"join",
)
)
self.get_success(
inject_visibility_event(
self.hs, TEST_ROOM_ID, "@resident:remote_hs", "joined"
)
)
outlier = self._inject_outlier()
self.assertEqual(
self.get_success(
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filter_events_for_server(
self._storage_controllers,
"remote_hs",
"hs",
[outlier],
redact=True,
filter_out_erased_senders=True,
filter_out_remote_partial_state_events=True,
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)
),
[outlier],
)
# it should also work when there are other events in the list
evt = self.get_success(
inject_message_event(self.hs, TEST_ROOM_ID, "@unerased:local_hs")
)
filtered = self.get_success(
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filter_events_for_server(
self._storage_controllers,
"remote_hs",
"local_hs",
[outlier, evt],
redact=True,
filter_out_erased_senders=True,
filter_out_remote_partial_state_events=True,
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)
)
self.assertEqual(len(filtered), 2, f"expected 2 results, got: {filtered}")
self.assertEqual(filtered[0], outlier)
self.assertEqual(filtered[1].event_id, evt.event_id)
self.assertEqual(filtered[1].content, evt.content)
# ... but other servers should only be able to see the outlier (the other should
# be redacted)
filtered = self.get_success(
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filter_events_for_server(
self._storage_controllers,
"other_server",
"local_hs",
[outlier, evt],
redact=True,
filter_out_erased_senders=True,
filter_out_remote_partial_state_events=True,
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)
)
self.assertEqual(filtered[0], outlier)
self.assertEqual(filtered[1].event_id, evt.event_id)
self.assertNotIn("body", filtered[1].content)
def test_erased_user(self) -> None:
# 4 message events, from erased and unerased users, with a membership
# change in the middle of them.
events_to_filter = []
evt = self.get_success(
inject_message_event(self.hs, TEST_ROOM_ID, "@unerased:local_hs")
)
events_to_filter.append(evt)
evt = self.get_success(
inject_message_event(self.hs, TEST_ROOM_ID, "@erased:local_hs")
)
events_to_filter.append(evt)
evt = self.get_success(
inject_member_event(
self.hs,
TEST_ROOM_ID,
"@joiner:remote_hs",
"join",
)
)
events_to_filter.append(evt)
evt = self.get_success(
inject_message_event(self.hs, TEST_ROOM_ID, "@unerased:local_hs")
)
events_to_filter.append(evt)
evt = self.get_success(
inject_message_event(self.hs, TEST_ROOM_ID, "@erased:local_hs")
)
events_to_filter.append(evt)
# the erasey user gets erased
self.get_success(
self.hs.get_datastores().main.mark_user_erased("@erased:local_hs")
)
# ... and the filtering happens.
filtered = self.get_success(
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filter_events_for_server(
self._storage_controllers,
"test_server",
"local_hs",
events_to_filter,
redact=True,
filter_out_erased_senders=True,
filter_out_remote_partial_state_events=True,
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)
)
for i in range(len(events_to_filter)):
self.assertEqual(
events_to_filter[i].event_id,
filtered[i].event_id,
"Unexpected event at result position %i" % (i,),
)
for i in (0, 3):
self.assertEqual(
events_to_filter[i].content["body"],
filtered[i].content["body"],
"Unexpected event content at result position %i" % (i,),
)
for i in (1, 4):
self.assertNotIn("body", filtered[i].content)
def _inject_outlier(self) -> EventBase:
builder = self.event_builder_factory.for_room_version(
RoomVersions.V1,
{
"type": "m.room.member",
"sender": "@test:user",
"state_key": "@test:user",
"room_id": TEST_ROOM_ID,
"content": {"membership": "join"},
},
)
event = self.get_success(builder.build(prev_event_ids=[], auth_event_ids=[]))
event.internal_metadata.outlier = True
self.get_success(
self._persistence.persist_event(
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event, EventContext.for_outlier(self._storage_controllers)
)
)
return event
class FilterEventsForClientTestCase(HomeserverTestCase):
servlets = [
admin.register_servlets,
login.register_servlets,
room.register_servlets,
]
def test_joined_history_visibility(self) -> None:
# User joins and leaves room. Should be able to see the join and leave,
# and messages sent between the two, but not before or after.
self.register_user("resident", "p1")
resident_token = self.login("resident", "p1")
room_id = self.helper.create_room_as("resident", tok=resident_token)
self.get_success(
inject_visibility_event(self.hs, room_id, "@resident:test", "joined")
)
before_event = self.get_success(
inject_message_event(self.hs, room_id, "@resident:test", body="before")
)
join_event = self.get_success(
inject_member_event(self.hs, room_id, "@joiner:test", "join")
)
during_event = self.get_success(
inject_message_event(self.hs, room_id, "@resident:test", body="during")
)
leave_event = self.get_success(
inject_member_event(self.hs, room_id, "@joiner:test", "leave")
)
after_event = self.get_success(
inject_message_event(self.hs, room_id, "@resident:test", body="after")
)
# We have to reload the events from the db, to ensure that prev_content is
# populated.
events_to_filter = [
self.get_success(
self.hs.get_storage_controllers().main.get_event(
e.event_id,
get_prev_content=True,
)
)
for e in [
before_event,
join_event,
during_event,
leave_event,
after_event,
]
]
# Now run the events through the filter, and check that we can see the events
# we expect, and that the membership prop is as expected.
#
# We deliberately do the queries for both users upfront; this simulates
# concurrent queries on the server, and helps ensure that we aren't
# accidentally serving the same event object (with the same unsigned.membership
# property) to both users.
joiner_filtered_events = self.get_success(
filter_events_for_client(
self.hs.get_storage_controllers(),
"@joiner:test",
events_to_filter,
)
)
resident_filtered_events = self.get_success(
filter_events_for_client(
self.hs.get_storage_controllers(),
"@resident:test",
events_to_filter,
)
)
# The joiner should be able to seem the join and leave,
# and messages sent between the two, but not before or after.
self.assertEqual(
[e.event_id for e in [join_event, during_event, leave_event]],
[e.event_id for e in joiner_filtered_events],
)
self.assertEqual(
["join", "join", "leave"],
[
e.unsigned[EventUnsignedContentFields.MEMBERSHIP]
for e in joiner_filtered_events
],
)
# The resident user should see all the events.
self.assertEqual(
[
e.event_id
for e in [
before_event,
join_event,
during_event,
leave_event,
after_event,
]
],
[e.event_id for e in resident_filtered_events],
)
self.assertEqual(
["join", "join", "join", "join", "join"],
[
e.unsigned[EventUnsignedContentFields.MEMBERSHIP]
for e in resident_filtered_events
],
)
class FilterEventsOutOfBandEventsForClientTestCase(
unittest.FederatingHomeserverTestCase
):
def test_out_of_band_invite_rejection(self) -> None:
# this is where we have received an invite event over federation, and then
# rejected it.
invite_pdu = {
"room_id": "!room:id",
"depth": 1,
"auth_events": [],
"prev_events": [],
"origin_server_ts": 1,
"sender": "@someone:" + self.OTHER_SERVER_NAME,
"type": "m.room.member",
"state_key": "@user:test",
"content": {"membership": "invite"},
}
self.add_hashes_and_signatures_from_other_server(invite_pdu)
invite_event_id = make_event_from_dict(invite_pdu, RoomVersions.V9).event_id
self.get_success(
self.hs.get_federation_server().on_invite_request(
self.OTHER_SERVER_NAME,
invite_pdu,
"9",
)
)
# stub out do_remotely_reject_invite so that we fall back to a locally-
# generated rejection
with patch.object(
self.hs.get_federation_handler(),
"do_remotely_reject_invite",
side_effect=Exception(),
):
reject_event_id, _ = self.get_success(
self.hs.get_room_member_handler().remote_reject_invite(
invite_event_id,
txn_id=None,
requester=create_requester("@user:test"),
content={},
)
)
invite_event, reject_event = self.get_success(
self.hs.get_datastores().main.get_events_as_list(
[invite_event_id, reject_event_id]
)
)
# the invited user should be able to see both the invite and the rejection
filtered_events = self.get_success(
filter_events_for_client(
self.hs.get_storage_controllers(),
"@user:test",
[invite_event, reject_event],
)
)
self.assertEqual(
[e.event_id for e in filtered_events],
[e.event_id for e in [invite_event, reject_event]],
)
self.assertEqual(
["invite", "leave"],
[
e.unsigned[EventUnsignedContentFields.MEMBERSHIP]
for e in filtered_events
],
)
# other users should see neither
self.assertEqual(
self.get_success(
filter_events_for_client(
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self.hs.get_storage_controllers(),
"@other:test",
[invite_event, reject_event],
)
),
[],
)
async def inject_visibility_event(
hs: HomeServer,
room_id: str,
sender: str,
visibility: str,
) -> EventBase:
return await inject_event(
hs,
type="m.room.history_visibility",
sender=sender,
state_key="",
room_id=room_id,
content={"history_visibility": visibility},
)
async def inject_message_event(
hs: HomeServer,
room_id: str,
sender: str,
body: Optional[str] = "testytest",
) -> EventBase:
return await inject_event(
hs,
type="m.room.message",
sender=sender,
room_id=room_id,
content={"body": body, "msgtype": "m.text"},
)