# -*- coding: utf-8 -*-
# Copyright 2018 New Vector Ltd
#
# 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.
import logging
from mock import Mock
from twisted.internet import defer
from twisted.internet.defer import succeed
from synapse.api.room_versions import RoomVersions
from synapse.events import FrozenEvent
from synapse.visibility import filter_events_for_server
import tests.unittest
from tests.utils import create_room, setup_test_homeserver
logger = logging.getLogger(__name__)
TEST_ROOM_ID = "!TEST:ROOM"
class FilterEventsForServerTestCase(tests.unittest.TestCase):
@defer.inlineCallbacks
def setUp(self):
self.hs = yield setup_test_homeserver(self.addCleanup)
self.event_creation_handler = self.hs.get_event_creation_handler()
self.event_builder_factory = self.hs.get_event_builder_factory()
self.store = self.hs.get_datastore()
self.storage = self.hs.get_storage()
yield defer.ensureDeferred(create_room(self.hs, TEST_ROOM_ID, "@someone:ROOM"))
@defer.inlineCallbacks
def test_filtering(self):
#
# 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.
yield self.inject_visibility("@admin:hs", "joined")
for i in range(0, 10):
yield self.inject_room_member("@resident%i:hs" % i)
events_to_filter = []
for i in range(0, 10):
user = "@user%i:%s" % (i, "test_server" if i == 5 else "other_server")
evt = yield self.inject_room_member(user, extra_content={"a": "b"})
events_to_filter.append(evt)
filtered = yield defer.ensureDeferred(
filter_events_for_server(self.storage, "test_server", events_to_filter)
)
# the result should be 5 redacted events, and 5 unredacted events.
for i in range(0, 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")
@defer.inlineCallbacks
def test_erased_user(self):
# 4 message events, from erased and unerased users, with a membership
# change in the middle of them.
events_to_filter = []
evt = yield self.inject_message("@unerased:local_hs")
events_to_filter.append(evt)
evt = yield self.inject_message("@erased:local_hs")
events_to_filter.append(evt)
evt = yield self.inject_room_member("@joiner:remote_hs")
events_to_filter.append(evt)
evt = yield self.inject_message("@unerased:local_hs")
events_to_filter.append(evt)
evt = yield self.inject_message("@erased:local_hs")
events_to_filter.append(evt)
# the erasey user gets erased
yield self.hs.get_datastore().mark_user_erased("@erased:local_hs")
# ... and the filtering happens.
filtered = yield defer.ensureDeferred(
filter_events_for_server(self.storage, "test_server", events_to_filter)
)
for i in range(0, 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)
@defer.inlineCallbacks
def inject_visibility(self, user_id, visibility):
content = {"history_visibility": visibility}
builder = self.event_builder_factory.for_room_version(
RoomVersions.V1,
{
"type": "m.room.history_visibility",
"sender": user_id,
"state_key": "",
"room_id": TEST_ROOM_ID,
"content": content,
},
)
event, context = yield defer.ensureDeferred(
self.event_creation_handler.create_new_client_event(builder)
)
yield defer.ensureDeferred(
self.storage.persistence.persist_event(event, context)
)
return event
@defer.inlineCallbacks
def inject_room_member(self, user_id, membership="join", extra_content={}):
content = {"membership": membership}
content.update(extra_content)
builder = self.event_builder_factory.for_room_version(
RoomVersions.V1,
{
"type": "m.room.member",
"sender": user_id,
"state_key": user_id,
"room_id": TEST_ROOM_ID,
"content": content,
},
)
event, context = yield defer.ensureDeferred(
self.event_creation_handler.create_new_client_event(builder)
)
yield defer.ensureDeferred(
self.storage.persistence.persist_event(event, context)
)
return event
@defer.inlineCallbacks
def inject_message(self, user_id, content=None):
if content is None:
content = {"body": "testytest", "msgtype": "m.text"}
builder = self.event_builder_factory.for_room_version(
RoomVersions.V1,
{
"type": "m.room.message",
"sender": user_id,
"room_id": TEST_ROOM_ID,
"content": content,
},
)
event, context = yield defer.ensureDeferred(
self.event_creation_handler.create_new_client_event(builder)
)
yield defer.ensureDeferred(
self.storage.persistence.persist_event(event, context)
)
return event
@defer.inlineCallbacks
def test_large_room(self):
# see what happens when we have a large room with hundreds of thousands
# of membership events
# As above, the events to be filtered consist of 10 membership events,
# where one of them is for a user on the server we are filtering for.
import cProfile
import pstats
import time
# we stub out the store, because building up all that state the normal
# way is very slow.
test_store = _TestStore()
# our initial state is 100000 membership events and one
# history_visibility event.
room_state = []
history_visibility_evt = FrozenEvent(
{
"event_id": "$history_vis",
"type": "m.room.history_visibility",
"sender": "@resident_user_0:test.com",
"state_key": "",
"room_id": TEST_ROOM_ID,
"content": {"history_visibility": "joined"},
}
)
room_state.append(history_visibility_evt)
test_store.add_event(history_visibility_evt)
for i in range(0, 100000):
user = "@resident_user_%i:test.com" % (i,)
evt = FrozenEvent(
{
"event_id": "$res_event_%i" % (i,),
"type": "m.room.member",
"state_key": user,
"sender": user,
"room_id": TEST_ROOM_ID,
"content": {"membership": "join", "extra": "zzz,"},
}
)
room_state.append(evt)
test_store.add_event(evt)
events_to_filter = []
for i in range(0, 10):
user = "@user%i:%s" % (i, "test_server" if i == 5 else "other_server")
evt = FrozenEvent(
{
"event_id": "$evt%i" % (i,),
"type": "m.room.member",
"state_key": user,
"sender": user,
"room_id": TEST_ROOM_ID,
"content": {"membership": "join", "extra": "zzz"},
}
)
events_to_filter.append(evt)
room_state.append(evt)
test_store.add_event(evt)
test_store.set_state_ids_for_event(
evt, {(e.type, e.state_key): e.event_id for e in room_state}
)
pr = cProfile.Profile()
pr.enable()
logger.info("Starting filtering")
start = time.time()
storage = Mock()
storage.main = test_store
storage.state = test_store
filtered = yield defer.ensureDeferred(
filter_events_for_server(test_store, "test_server", events_to_filter)
)
logger.info("Filtering took %f seconds", time.time() - start)
pr.disable()
with open("filter_events_for_server.profile", "w+") as f:
ps = pstats.Stats(pr, stream=f).sort_stats("cumulative")
ps.print_stats()
# the result should be 5 redacted events, and 5 unredacted events.
for i in range(0, 5):
self.assertEqual(events_to_filter[i].event_id, filtered[i].event_id)
self.assertNotIn("extra", 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["extra"], "zzz")
test_large_room.skip = "Disabled by default because it's slow"
class _TestStore(object):
"""Implements a few methods of the DataStore, so that we can test
filter_events_for_server
"""
def __init__(self):
# data for get_events: a map from event_id to event
self.events = {}
# data for get_state_ids_for_events mock: a map from event_id to
# a map from (type_state_key) -> event_id for the state at that
# event
self.state_ids_for_events = {}
def add_event(self, event):
self.events[event.event_id] = event
def set_state_ids_for_event(self, event, state):
self.state_ids_for_events[event.event_id] = state
def get_state_ids_for_events(self, events, types):
res = {}
include_memberships = False
for (type, state_key) in types:
if type == "m.room.history_visibility":
continue
if type != "m.room.member" or state_key is not None:
raise RuntimeError(
"Unimplemented: get_state_ids with type (%s, %s)"
% (type, state_key)
)
include_memberships = True
if include_memberships:
for event_id in events:
res[event_id] = self.state_ids_for_events[event_id]
else:
k = ("m.room.history_visibility", "")
for event_id in events:
hve = self.state_ids_for_events[event_id][k]
res[event_id] = {k: hve}
return succeed(res)
def get_events(self, events):
return succeed({event_id: self.events[event_id] for event_id in events})
def are_users_erased(self, users):
return succeed({u: False for u in users})