695 lines
23 KiB
Python
695 lines
23 KiB
Python
# Copyright 2018 New Vector Ltd
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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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import unittest
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from typing import Optional
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from parameterized import parameterized
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from synapse import event_auth
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from synapse.api.constants import EventContentFields
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from synapse.api.errors import AuthError
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from synapse.api.room_versions import EventFormatVersions, RoomVersion, RoomVersions
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from synapse.events import EventBase, make_event_from_dict
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from synapse.types import JsonDict, get_domain_from_id
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class EventAuthTestCase(unittest.TestCase):
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def test_rejected_auth_events(self):
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"""
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Events that refer to rejected events in their auth events are rejected
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"""
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creator = "@creator:example.com"
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auth_events = [
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_create_event(RoomVersions.V9, creator),
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_join_event(RoomVersions.V9, creator),
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]
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# creator should be able to send state
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event_auth.check_auth_rules_for_event(
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RoomVersions.V9,
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_random_state_event(RoomVersions.V9, creator),
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auth_events,
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)
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# ... but a rejected join_rules event should cause it to be rejected
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rejected_join_rules = _join_rules_event(
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RoomVersions.V9,
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creator,
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"public",
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)
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rejected_join_rules.rejected_reason = "stinky"
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auth_events.append(rejected_join_rules)
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self.assertRaises(
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AuthError,
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event_auth.check_auth_rules_for_event,
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RoomVersions.V9,
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_random_state_event(RoomVersions.V9, creator),
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auth_events,
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)
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# ... even if there is *also* a good join rules
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auth_events.append(_join_rules_event(RoomVersions.V9, creator, "public"))
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self.assertRaises(
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AuthError,
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event_auth.check_auth_rules_for_event,
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RoomVersions.V9,
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_random_state_event(RoomVersions.V9, creator),
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auth_events,
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)
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def test_random_users_cannot_send_state_before_first_pl(self):
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"""
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Check that, before the first PL lands, the creator is the only user
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that can send a state event.
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"""
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creator = "@creator:example.com"
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joiner = "@joiner:example.com"
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auth_events = [
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_create_event(RoomVersions.V1, creator),
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_join_event(RoomVersions.V1, creator),
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_join_event(RoomVersions.V1, joiner),
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]
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# creator should be able to send state
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_random_state_event(RoomVersions.V1, creator),
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auth_events,
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)
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# joiner should not be able to send state
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self.assertRaises(
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AuthError,
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event_auth.check_auth_rules_for_event,
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RoomVersions.V1,
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_random_state_event(RoomVersions.V1, joiner),
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auth_events,
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)
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def test_state_default_level(self):
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"""
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Check that users above the state_default level can send state and
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those below cannot
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"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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king = "@joiner2:example.com"
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auth_events = [
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_create_event(RoomVersions.V1, creator),
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_join_event(RoomVersions.V1, creator),
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_power_levels_event(
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RoomVersions.V1,
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creator,
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{"state_default": "30", "users": {pleb: "29", king: "30"}},
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),
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_join_event(RoomVersions.V1, pleb),
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_join_event(RoomVersions.V1, king),
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]
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# pleb should not be able to send state
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self.assertRaises(
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AuthError,
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event_auth.check_auth_rules_for_event,
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RoomVersions.V1,
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_random_state_event(RoomVersions.V1, pleb),
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auth_events,
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),
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# king should be able to send state
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_random_state_event(RoomVersions.V1, king),
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auth_events,
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)
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def test_alias_event(self):
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"""Alias events have special behavior up through room version 6."""
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creator = "@creator:example.com"
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other = "@other:example.com"
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auth_events = [
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_create_event(RoomVersions.V1, creator),
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_join_event(RoomVersions.V1, creator),
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]
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# creator should be able to send aliases
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_alias_event(RoomVersions.V1, creator),
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auth_events,
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)
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# Reject an event with no state key.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_alias_event(RoomVersions.V1, creator, state_key=""),
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auth_events,
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)
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# If the domain of the sender does not match the state key, reject.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_alias_event(RoomVersions.V1, creator, state_key="test.com"),
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auth_events,
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)
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# Note that the member does *not* need to be in the room.
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event_auth.check_auth_rules_for_event(
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RoomVersions.V1,
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_alias_event(RoomVersions.V1, other),
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auth_events,
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)
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def test_msc2432_alias_event(self):
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"""After MSC2432, alias events have no special behavior."""
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creator = "@creator:example.com"
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other = "@other:example.com"
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auth_events = [
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_create_event(RoomVersions.V6, creator),
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_join_event(RoomVersions.V6, creator),
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]
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# creator should be able to send aliases
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_alias_event(RoomVersions.V6, creator),
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auth_events,
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)
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# No particular checks are done on the state key.
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_alias_event(RoomVersions.V6, creator, state_key=""),
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auth_events,
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_alias_event(RoomVersions.V6, creator, state_key="test.com"),
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auth_events,
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)
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# Per standard auth rules, the member must be in the room.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_alias_event(RoomVersions.V6, other),
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auth_events,
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)
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@parameterized.expand([(RoomVersions.V1, True), (RoomVersions.V6, False)])
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def test_notifications(self, room_version: RoomVersion, allow_modification: bool):
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"""
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Notifications power levels get checked due to MSC2209.
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"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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auth_events = [
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_create_event(room_version, creator),
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_join_event(room_version, creator),
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_power_levels_event(
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room_version, creator, {"state_default": "30", "users": {pleb: "30"}}
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),
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_join_event(room_version, pleb),
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]
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pl_event = _power_levels_event(
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room_version, pleb, {"notifications": {"room": 100}}
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)
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# on room V1, pleb should be able to modify the notifications power level.
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if allow_modification:
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event_auth.check_auth_rules_for_event(room_version, pl_event, auth_events)
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else:
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# But an MSC2209 room rejects this change.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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room_version, pl_event, auth_events
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)
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def test_join_rules_public(self):
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"""
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Test joining a public room.
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"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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auth_events = {
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("m.room.create", ""): _create_event(RoomVersions.V6, creator),
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("m.room.member", creator): _join_event(RoomVersions.V6, creator),
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("m.room.join_rules", ""): _join_rules_event(
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RoomVersions.V6, creator, "public"
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),
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}
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# Check join.
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user cannot be force-joined to a room.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_member_event(RoomVersions.V6, pleb, "join", sender=creator),
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auth_events.values(),
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)
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# Banned should be rejected.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "ban"
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)
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user who left can re-join.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "leave"
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user can send a join if they're in the room.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "join"
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user can accept an invite.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "invite", sender=creator
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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def test_join_rules_invite(self):
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"""
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Test joining an invite only room.
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"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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auth_events = {
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("m.room.create", ""): _create_event(RoomVersions.V6, creator),
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("m.room.member", creator): _join_event(RoomVersions.V6, creator),
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("m.room.join_rules", ""): _join_rules_event(
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RoomVersions.V6, creator, "invite"
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),
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}
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# A join without an invite is rejected.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user cannot be force-joined to a room.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_member_event(RoomVersions.V6, pleb, "join", sender=creator),
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auth_events.values(),
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)
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# Banned should be rejected.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "ban"
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)
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user who left cannot re-join.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "leave"
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)
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user can send a join if they're in the room.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "join"
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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# A user can accept an invite.
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auth_events[("m.room.member", pleb)] = _member_event(
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RoomVersions.V6, pleb, "invite", sender=creator
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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def test_join_rules_restricted_old_room(self) -> None:
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"""Old room versions should reject joins to restricted rooms"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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auth_events = {
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("m.room.create", ""): _create_event(RoomVersions.V6, creator),
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("m.room.member", creator): _join_event(RoomVersions.V6, creator),
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("m.room.power_levels", ""): _power_levels_event(
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RoomVersions.V6, creator, {"invite": 0}
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),
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("m.room.join_rules", ""): _join_rules_event(
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RoomVersions.V6, creator, "restricted"
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),
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}
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V6,
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_join_event(RoomVersions.V6, pleb),
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auth_events.values(),
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)
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def test_join_rules_msc3083_restricted(self) -> None:
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"""
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Test joining a restricted room from MSC3083.
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This is similar to the public test, but has some additional checks on
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signatures.
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The checks which care about signatures fake them by simply adding an
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object of the proper form, not generating valid signatures.
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"""
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creator = "@creator:example.com"
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pleb = "@joiner:example.com"
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auth_events = {
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("m.room.create", ""): _create_event(RoomVersions.V8, creator),
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("m.room.member", creator): _join_event(RoomVersions.V8, creator),
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("m.room.power_levels", ""): _power_levels_event(
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RoomVersions.V8, creator, {"invite": 0}
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),
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("m.room.join_rules", ""): _join_rules_event(
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RoomVersions.V8, creator, "restricted"
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),
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}
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# A properly formatted join event should work.
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authorised_join_event = _join_event(
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RoomVersions.V8,
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pleb,
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additional_content={
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EventContentFields.AUTHORISING_USER: "@creator:example.com"
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},
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V8,
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authorised_join_event,
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auth_events.values(),
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)
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# A join issued by a specific user works (i.e. the power level checks
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# are done properly).
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pl_auth_events = auth_events.copy()
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pl_auth_events[("m.room.power_levels", "")] = _power_levels_event(
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RoomVersions.V8,
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creator,
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{"invite": 100, "users": {"@inviter:foo.test": 150}},
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)
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pl_auth_events[("m.room.member", "@inviter:foo.test")] = _join_event(
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RoomVersions.V8, "@inviter:foo.test"
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)
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event_auth.check_auth_rules_for_event(
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RoomVersions.V8,
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_join_event(
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RoomVersions.V8,
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pleb,
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additional_content={
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EventContentFields.AUTHORISING_USER: "@inviter:foo.test"
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},
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),
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pl_auth_events.values(),
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)
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# A join which is missing an authorised server is rejected.
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V8,
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_join_event(RoomVersions.V8, pleb),
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auth_events.values(),
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)
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# An join authorised by a user who is not in the room is rejected.
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pl_auth_events = auth_events.copy()
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pl_auth_events[("m.room.power_levels", "")] = _power_levels_event(
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RoomVersions.V8,
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creator,
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{"invite": 100, "users": {"@other:example.com": 150}},
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)
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V8,
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_join_event(
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RoomVersions.V8,
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pleb,
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additional_content={
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EventContentFields.AUTHORISING_USER: "@other:example.com"
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},
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),
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auth_events.values(),
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)
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# A user cannot be force-joined to a room. (This uses an event which
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# *would* be valid, but is sent be a different user.)
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with self.assertRaises(AuthError):
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event_auth.check_auth_rules_for_event(
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RoomVersions.V8,
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_member_event(
|
|
RoomVersions.V8,
|
|
pleb,
|
|
"join",
|
|
sender=creator,
|
|
additional_content={
|
|
EventContentFields.AUTHORISING_USER: "@inviter:foo.test"
|
|
},
|
|
),
|
|
auth_events.values(),
|
|
)
|
|
|
|
# Banned should be rejected.
|
|
auth_events[("m.room.member", pleb)] = _member_event(
|
|
RoomVersions.V8, pleb, "ban"
|
|
)
|
|
with self.assertRaises(AuthError):
|
|
event_auth.check_auth_rules_for_event(
|
|
RoomVersions.V8,
|
|
authorised_join_event,
|
|
auth_events.values(),
|
|
)
|
|
|
|
# A user who left can re-join.
|
|
auth_events[("m.room.member", pleb)] = _member_event(
|
|
RoomVersions.V8, pleb, "leave"
|
|
)
|
|
event_auth.check_auth_rules_for_event(
|
|
RoomVersions.V8,
|
|
authorised_join_event,
|
|
auth_events.values(),
|
|
)
|
|
|
|
# A user can send a join if they're in the room. (This doesn't need to
|
|
# be authorised since the user is already joined.)
|
|
auth_events[("m.room.member", pleb)] = _member_event(
|
|
RoomVersions.V8, pleb, "join"
|
|
)
|
|
event_auth.check_auth_rules_for_event(
|
|
RoomVersions.V8,
|
|
_join_event(RoomVersions.V8, pleb),
|
|
auth_events.values(),
|
|
)
|
|
|
|
# A user can accept an invite. (This doesn't need to be authorised since
|
|
# the user was invited.)
|
|
auth_events[("m.room.member", pleb)] = _member_event(
|
|
RoomVersions.V8, pleb, "invite", sender=creator
|
|
)
|
|
event_auth.check_auth_rules_for_event(
|
|
RoomVersions.V8,
|
|
_join_event(RoomVersions.V8, pleb),
|
|
auth_events.values(),
|
|
)
|
|
|
|
|
|
# helpers for making events
|
|
|
|
TEST_ROOM_ID = "!test:room"
|
|
|
|
|
|
def _create_event(
|
|
room_version: RoomVersion,
|
|
user_id: str,
|
|
) -> EventBase:
|
|
return make_event_from_dict(
|
|
{
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "m.room.create",
|
|
"state_key": "",
|
|
"sender": user_id,
|
|
"content": {"creator": user_id},
|
|
},
|
|
room_version=room_version,
|
|
)
|
|
|
|
|
|
def _member_event(
|
|
room_version: RoomVersion,
|
|
user_id: str,
|
|
membership: str,
|
|
sender: Optional[str] = None,
|
|
additional_content: Optional[dict] = None,
|
|
) -> EventBase:
|
|
return make_event_from_dict(
|
|
{
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "m.room.member",
|
|
"sender": sender or user_id,
|
|
"state_key": user_id,
|
|
"content": {"membership": membership, **(additional_content or {})},
|
|
"prev_events": [],
|
|
},
|
|
room_version=room_version,
|
|
)
|
|
|
|
|
|
def _join_event(
|
|
room_version: RoomVersion,
|
|
user_id: str,
|
|
additional_content: Optional[dict] = None,
|
|
) -> EventBase:
|
|
return _member_event(
|
|
room_version,
|
|
user_id,
|
|
"join",
|
|
additional_content=additional_content,
|
|
)
|
|
|
|
|
|
def _power_levels_event(
|
|
room_version: RoomVersion,
|
|
sender: str,
|
|
content: JsonDict,
|
|
) -> EventBase:
|
|
return make_event_from_dict(
|
|
{
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "m.room.power_levels",
|
|
"sender": sender,
|
|
"state_key": "",
|
|
"content": content,
|
|
},
|
|
room_version=room_version,
|
|
)
|
|
|
|
|
|
def _alias_event(room_version: RoomVersion, sender: str, **kwargs) -> EventBase:
|
|
data = {
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "m.room.aliases",
|
|
"sender": sender,
|
|
"state_key": get_domain_from_id(sender),
|
|
"content": {"aliases": []},
|
|
}
|
|
data.update(**kwargs)
|
|
return make_event_from_dict(data, room_version=room_version)
|
|
|
|
|
|
def _random_state_event(room_version: RoomVersion, sender: str) -> EventBase:
|
|
return make_event_from_dict(
|
|
{
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "test.state",
|
|
"sender": sender,
|
|
"state_key": "",
|
|
"content": {"membership": "join"},
|
|
},
|
|
room_version=room_version,
|
|
)
|
|
|
|
|
|
def _join_rules_event(
|
|
room_version: RoomVersion, sender: str, join_rule: str
|
|
) -> EventBase:
|
|
return make_event_from_dict(
|
|
{
|
|
"room_id": TEST_ROOM_ID,
|
|
**_maybe_get_event_id_dict_for_room_version(room_version),
|
|
"type": "m.room.join_rules",
|
|
"sender": sender,
|
|
"state_key": "",
|
|
"content": {
|
|
"join_rule": join_rule,
|
|
},
|
|
},
|
|
room_version=room_version,
|
|
)
|
|
|
|
|
|
event_count = 0
|
|
|
|
|
|
def _maybe_get_event_id_dict_for_room_version(room_version: RoomVersion) -> dict:
|
|
"""If this room version needs it, generate an event id"""
|
|
if room_version.event_format != EventFormatVersions.V1:
|
|
return {}
|
|
|
|
global event_count
|
|
c = event_count
|
|
event_count += 1
|
|
return {"event_id": "!%i:example.com" % (c,)}
|