diff options
| -rw-r--r-- | synapse/event_auth.py | 34 | ||||
| -rw-r--r-- | tests/test_event_auth.py | 153 |
2 files changed, 167 insertions, 20 deletions
diff --git a/synapse/event_auth.py b/synapse/event_auth.py index 36a48870a0..f512d88145 100644 --- a/synapse/event_auth.py +++ b/synapse/event_auth.py @@ -370,28 +370,22 @@ def get_send_level(etype, state_key, power_levels_event): int: power level required to send this event. """ - send_level_event = power_levels_event # todo: rename refs below - send_level = None - if send_level_event: - send_level = send_level_event.content.get("events", {}).get( - etype - ) - if send_level is None: - if state_key is not None: - send_level = send_level_event.content.get( - "state_default", 50 - ) - else: - send_level = send_level_event.content.get( - "events_default", 0 - ) - - if send_level: - send_level = int(send_level) + if power_levels_event: + power_levels_content = power_levels_event.content else: - send_level = 0 + power_levels_content = {} + + # see if we have a custom level for this event type + send_level = power_levels_content.get("events", {}).get(etype) + + # otherwise, fall back to the state_default/events_default. + if send_level is None: + if state_key is not None: + send_level = power_levels_content.get("state_default", 50) + else: + send_level = power_levels_content.get("events_default", 0) - return send_level + return int(send_level) def _can_send_event(event, auth_events): diff --git a/tests/test_event_auth.py b/tests/test_event_auth.py new file mode 100644 index 0000000000..3d756b0d85 --- /dev/null +++ b/tests/test_event_auth.py @@ -0,0 +1,153 @@ +# -*- 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. + +from synapse import event_auth +from synapse.api.errors import AuthError +from synapse.events import FrozenEvent +import unittest + + +class EventAuthTestCase(unittest.TestCase): + @unittest.DEBUG + def test_random_users_cannot_send_state_before_first_pl(self): + """ + Check that, before the first PL lands, the creator is the only user + that can send a state event. + """ + creator = "@creator:example.com" + joiner = "@joiner:example.com" + auth_events = { + ("m.room.create", ""): _create_event(creator), + ("m.room.member", creator): _join_event(creator), + ("m.room.member", joiner): _join_event(joiner), + } + + # creator should be able to send state + event_auth.check( + _random_state_event(creator), auth_events, + do_sig_check=False, + ) + + # joiner should not be able to send state + self.assertRaises( + AuthError, + event_auth.check, + _random_state_event(joiner), + auth_events, + do_sig_check=False, + ), + + @unittest.DEBUG + def test_state_default_level(self): + """ + Check that users above the state_default level can send state and + those below cannot + """ + creator = "@creator:example.com" + pleb = "@joiner:example.com" + king = "@joiner2:example.com" + + auth_events = { + ("m.room.create", ""): _create_event(creator), + ("m.room.member", creator): _join_event(creator), + ("m.room.power_levels", ""): _power_levels_event(creator, { + "state_default": "30", + "users": { + pleb: "29", + king: "30", + }, + }), + ("m.room.member", pleb): _join_event(pleb), + ("m.room.member", king): _join_event(king), + } + + # pleb should not be able to send state + self.assertRaises( + AuthError, + event_auth.check, + _random_state_event(pleb), + auth_events, + do_sig_check=False, + ), + + # king should be able to send state + event_auth.check( + _random_state_event(king), auth_events, + do_sig_check=False, + ) + + +# helpers for making events + +TEST_ROOM_ID = "!test:room" + + +def _create_event(user_id): + return FrozenEvent({ + "room_id": TEST_ROOM_ID, + "event_id": _get_event_id(), + "type": "m.room.create", + "sender": user_id, + "content": { + "creator": user_id, + }, + }) + + +def _join_event(user_id): + return FrozenEvent({ + "room_id": TEST_ROOM_ID, + "event_id": _get_event_id(), + "type": "m.room.member", + "sender": user_id, + "state_key": user_id, + "content": { + "membership": "join", + }, + }) + + +def _power_levels_event(sender, content): + return FrozenEvent({ + "room_id": TEST_ROOM_ID, + "event_id": _get_event_id(), + "type": "m.room.power_levels", + "sender": sender, + "state_key": "", + "content": content, + }) + + +def _random_state_event(sender): + return FrozenEvent({ + "room_id": TEST_ROOM_ID, + "event_id": _get_event_id(), + "type": "test.state", + "sender": sender, + "state_key": "", + "content": { + "membership": "join", + }, + }) + + +event_count = 0 + + +def _get_event_id(): + global event_count + c = event_count + event_count += 1 + return "!%i:example.com" % (c, ) |