1040 lines
38 KiB
Python
1040 lines
38 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 - 2016 OpenMarket Ltd
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# Copyright 2018-2019 New Vector Ltd
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# Copyright 2019 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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"""Contains functions for performing events on rooms."""
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import itertools
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import logging
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import math
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import string
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from collections import OrderedDict
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from six import iteritems, string_types
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from twisted.internet import defer
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from synapse.api.constants import EventTypes, JoinRules, RoomCreationPreset
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from synapse.api.errors import AuthError, Codes, NotFoundError, StoreError, SynapseError
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from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersion
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from synapse.events.utils import copy_power_levels_contents
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from synapse.http.endpoint import parse_and_validate_server_name
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from synapse.storage.state import StateFilter
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from synapse.types import (
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Requester,
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RoomAlias,
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RoomID,
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RoomStreamToken,
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StateMap,
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StreamToken,
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UserID,
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)
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from synapse.util import stringutils
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from synapse.util.async_helpers import Linearizer
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from synapse.util.caches.response_cache import ResponseCache
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from synapse.visibility import filter_events_for_client
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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id_server_scheme = "https://"
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FIVE_MINUTES_IN_MS = 5 * 60 * 1000
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class RoomCreationHandler(BaseHandler):
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PRESETS_DICT = {
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RoomCreationPreset.PRIVATE_CHAT: {
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"join_rules": JoinRules.INVITE,
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"history_visibility": "shared",
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"original_invitees_have_ops": False,
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"guest_can_join": True,
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"power_level_content_override": {"invite": 0},
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},
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RoomCreationPreset.TRUSTED_PRIVATE_CHAT: {
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"join_rules": JoinRules.INVITE,
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"history_visibility": "shared",
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"original_invitees_have_ops": True,
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"guest_can_join": True,
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"power_level_content_override": {"invite": 0},
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},
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RoomCreationPreset.PUBLIC_CHAT: {
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"join_rules": JoinRules.PUBLIC,
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"history_visibility": "shared",
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"original_invitees_have_ops": False,
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"guest_can_join": False,
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"power_level_content_override": {},
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},
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}
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def __init__(self, hs):
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super(RoomCreationHandler, self).__init__(hs)
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self.spam_checker = hs.get_spam_checker()
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self.event_creation_handler = hs.get_event_creation_handler()
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self.room_member_handler = hs.get_room_member_handler()
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self.config = hs.config
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# linearizer to stop two upgrades happening at once
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self._upgrade_linearizer = Linearizer("room_upgrade_linearizer")
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# If a user tries to update the same room multiple times in quick
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# succession, only process the first attempt and return its result to
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# subsequent requests
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self._upgrade_response_cache = ResponseCache(
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hs, "room_upgrade", timeout_ms=FIVE_MINUTES_IN_MS
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)
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self._server_notices_mxid = hs.config.server_notices_mxid
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self.third_party_event_rules = hs.get_third_party_event_rules()
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@defer.inlineCallbacks
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def upgrade_room(
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self, requester: Requester, old_room_id: str, new_version: RoomVersion
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):
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"""Replace a room with a new room with a different version
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Args:
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requester: the user requesting the upgrade
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old_room_id: the id of the room to be replaced
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new_version: the new room version to use
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Returns:
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Deferred[unicode]: the new room id
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"""
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yield self.ratelimit(requester)
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user_id = requester.user.to_string()
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# Check if this room is already being upgraded by another person
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for key in self._upgrade_response_cache.pending_result_cache:
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if key[0] == old_room_id and key[1] != user_id:
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# Two different people are trying to upgrade the same room.
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# Send the second an error.
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#
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# Note that this of course only gets caught if both users are
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# on the same homeserver.
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raise SynapseError(
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400, "An upgrade for this room is currently in progress"
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)
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# Upgrade the room
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#
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# If this user has sent multiple upgrade requests for the same room
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# and one of them is not complete yet, cache the response and
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# return it to all subsequent requests
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ret = yield self._upgrade_response_cache.wrap(
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(old_room_id, user_id),
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self._upgrade_room,
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requester,
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old_room_id,
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new_version, # args for _upgrade_room
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)
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return ret
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@defer.inlineCallbacks
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def _upgrade_room(
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self, requester: Requester, old_room_id: str, new_version: RoomVersion
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):
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user_id = requester.user.to_string()
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# start by allocating a new room id
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r = yield self.store.get_room(old_room_id)
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if r is None:
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raise NotFoundError("Unknown room id %s" % (old_room_id,))
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new_room_id = yield self._generate_room_id(
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creator_id=user_id, is_public=r["is_public"], room_version=new_version,
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)
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logger.info("Creating new room %s to replace %s", new_room_id, old_room_id)
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# we create and auth the tombstone event before properly creating the new
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# room, to check our user has perms in the old room.
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(
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tombstone_event,
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tombstone_context,
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) = yield self.event_creation_handler.create_event(
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requester,
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{
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"type": EventTypes.Tombstone,
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"state_key": "",
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"room_id": old_room_id,
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"sender": user_id,
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"content": {
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"body": "This room has been replaced",
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"replacement_room": new_room_id,
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},
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},
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token_id=requester.access_token_id,
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)
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old_room_version = yield self.store.get_room_version_id(old_room_id)
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yield self.auth.check_from_context(
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old_room_version, tombstone_event, tombstone_context
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)
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yield self.clone_existing_room(
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requester,
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old_room_id=old_room_id,
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new_room_id=new_room_id,
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new_room_version=new_version,
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tombstone_event_id=tombstone_event.event_id,
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)
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# now send the tombstone
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yield self.event_creation_handler.send_nonmember_event(
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requester, tombstone_event, tombstone_context
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)
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old_room_state = yield tombstone_context.get_current_state_ids()
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# update any aliases
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yield self._move_aliases_to_new_room(
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requester, old_room_id, new_room_id, old_room_state
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)
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# Copy over user push rules, tags and migrate room directory state
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yield self.room_member_handler.transfer_room_state_on_room_upgrade(
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old_room_id, new_room_id
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)
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# finally, shut down the PLs in the old room, and update them in the new
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# room.
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yield self._update_upgraded_room_pls(
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requester, old_room_id, new_room_id, old_room_state,
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)
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return new_room_id
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@defer.inlineCallbacks
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def _update_upgraded_room_pls(
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self,
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requester: Requester,
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old_room_id: str,
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new_room_id: str,
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old_room_state: StateMap[str],
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):
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"""Send updated power levels in both rooms after an upgrade
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Args:
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requester: the user requesting the upgrade
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old_room_id: the id of the room to be replaced
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new_room_id: the id of the replacement room
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old_room_state: the state map for the old room
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Returns:
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Deferred
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"""
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old_room_pl_event_id = old_room_state.get((EventTypes.PowerLevels, ""))
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if old_room_pl_event_id is None:
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logger.warning(
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"Not supported: upgrading a room with no PL event. Not setting PLs "
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"in old room."
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)
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return
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old_room_pl_state = yield self.store.get_event(old_room_pl_event_id)
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# we try to stop regular users from speaking by setting the PL required
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# to send regular events and invites to 'Moderator' level. That's normally
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# 50, but if the default PL in a room is 50 or more, then we set the
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# required PL above that.
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pl_content = dict(old_room_pl_state.content)
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users_default = int(pl_content.get("users_default", 0))
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restricted_level = max(users_default + 1, 50)
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updated = False
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for v in ("invite", "events_default"):
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current = int(pl_content.get(v, 0))
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if current < restricted_level:
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logger.debug(
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"Setting level for %s in %s to %i (was %i)",
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v,
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old_room_id,
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restricted_level,
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current,
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)
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pl_content[v] = restricted_level
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updated = True
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else:
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logger.debug("Not setting level for %s (already %i)", v, current)
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if updated:
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try:
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yield self.event_creation_handler.create_and_send_nonmember_event(
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requester,
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{
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"type": EventTypes.PowerLevels,
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"state_key": "",
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"room_id": old_room_id,
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"sender": requester.user.to_string(),
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"content": pl_content,
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},
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ratelimit=False,
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)
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except AuthError as e:
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logger.warning("Unable to update PLs in old room: %s", e)
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yield self.event_creation_handler.create_and_send_nonmember_event(
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requester,
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{
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"type": EventTypes.PowerLevels,
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"state_key": "",
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"room_id": new_room_id,
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"sender": requester.user.to_string(),
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"content": old_room_pl_state.content,
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},
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ratelimit=False,
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)
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@defer.inlineCallbacks
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def clone_existing_room(
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self,
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requester: Requester,
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old_room_id: str,
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new_room_id: str,
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new_room_version: RoomVersion,
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tombstone_event_id: str,
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):
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"""Populate a new room based on an old room
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Args:
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requester: the user requesting the upgrade
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old_room_id : the id of the room to be replaced
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new_room_id: the id to give the new room (should already have been
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created with _gemerate_room_id())
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new_room_version: the new room version to use
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tombstone_event_id: the ID of the tombstone event in the old room.
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Returns:
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Deferred
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"""
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user_id = requester.user.to_string()
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if not self.spam_checker.user_may_create_room(user_id):
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raise SynapseError(403, "You are not permitted to create rooms")
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creation_content = {
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"room_version": new_room_version.identifier,
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"predecessor": {"room_id": old_room_id, "event_id": tombstone_event_id},
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}
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# Check if old room was non-federatable
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# Get old room's create event
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old_room_create_event = yield self.store.get_create_event_for_room(old_room_id)
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# Check if the create event specified a non-federatable room
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if not old_room_create_event.content.get("m.federate", True):
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# If so, mark the new room as non-federatable as well
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creation_content["m.federate"] = False
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initial_state = {}
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# Replicate relevant room events
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types_to_copy = (
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(EventTypes.JoinRules, ""),
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(EventTypes.Name, ""),
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(EventTypes.Topic, ""),
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(EventTypes.RoomHistoryVisibility, ""),
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(EventTypes.GuestAccess, ""),
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(EventTypes.RoomAvatar, ""),
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(EventTypes.RoomEncryption, ""),
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(EventTypes.ServerACL, ""),
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(EventTypes.RelatedGroups, ""),
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(EventTypes.PowerLevels, ""),
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)
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old_room_state_ids = yield self.store.get_filtered_current_state_ids(
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old_room_id, StateFilter.from_types(types_to_copy)
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)
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# map from event_id to BaseEvent
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old_room_state_events = yield self.store.get_events(old_room_state_ids.values())
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for k, old_event_id in iteritems(old_room_state_ids):
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old_event = old_room_state_events.get(old_event_id)
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if old_event:
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initial_state[k] = old_event.content
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# deep-copy the power-levels event before we start modifying it
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# note that if frozen_dicts are enabled, `power_levels` will be a frozen
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# dict so we can't just copy.deepcopy it.
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initial_state[
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(EventTypes.PowerLevels, "")
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] = power_levels = copy_power_levels_contents(
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initial_state[(EventTypes.PowerLevels, "")]
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)
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# Resolve the minimum power level required to send any state event
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# We will give the upgrading user this power level temporarily (if necessary) such that
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# they are able to copy all of the state events over, then revert them back to their
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# original power level afterwards in _update_upgraded_room_pls
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# Copy over user power levels now as this will not be possible with >100PL users once
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# the room has been created
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# Calculate the minimum power level needed to clone the room
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event_power_levels = power_levels.get("events", {})
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state_default = power_levels.get("state_default", 0)
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ban = power_levels.get("ban")
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needed_power_level = max(state_default, ban, max(event_power_levels.values()))
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# Raise the requester's power level in the new room if necessary
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current_power_level = power_levels["users"][user_id]
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if current_power_level < needed_power_level:
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power_levels["users"][user_id] = needed_power_level
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yield self._send_events_for_new_room(
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requester,
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new_room_id,
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# we expect to override all the presets with initial_state, so this is
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# somewhat arbitrary.
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preset_config=RoomCreationPreset.PRIVATE_CHAT,
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invite_list=[],
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initial_state=initial_state,
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creation_content=creation_content,
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)
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# Transfer membership events
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old_room_member_state_ids = yield self.store.get_filtered_current_state_ids(
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old_room_id, StateFilter.from_types([(EventTypes.Member, None)])
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)
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# map from event_id to BaseEvent
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old_room_member_state_events = yield self.store.get_events(
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old_room_member_state_ids.values()
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)
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for k, old_event in iteritems(old_room_member_state_events):
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# Only transfer ban events
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if (
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"membership" in old_event.content
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and old_event.content["membership"] == "ban"
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):
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yield self.room_member_handler.update_membership(
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requester,
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UserID.from_string(old_event["state_key"]),
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new_room_id,
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"ban",
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ratelimit=False,
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content=old_event.content,
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)
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# XXX invites/joins
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# XXX 3pid invites
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@defer.inlineCallbacks
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def _move_aliases_to_new_room(
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self,
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requester: Requester,
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old_room_id: str,
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new_room_id: str,
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old_room_state: StateMap[str],
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):
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directory_handler = self.hs.get_handlers().directory_handler
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aliases = yield self.store.get_aliases_for_room(old_room_id)
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# check to see if we have a canonical alias.
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canonical_alias_event = None
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canonical_alias_event_id = old_room_state.get((EventTypes.CanonicalAlias, ""))
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if canonical_alias_event_id:
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canonical_alias_event = yield self.store.get_event(canonical_alias_event_id)
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# first we try to remove the aliases from the old room (we suppress sending
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# the room_aliases event until the end).
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#
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# Note that we'll only be able to remove aliases that (a) aren't owned by an AS,
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# and (b) unless the user is a server admin, which the user created.
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#
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# This is probably correct - given we don't allow such aliases to be deleted
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# normally, it would be odd to allow it in the case of doing a room upgrade -
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# but it makes the upgrade less effective, and you have to wonder why a room
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# admin can't remove aliases that point to that room anyway.
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# (cf https://github.com/matrix-org/synapse/issues/2360)
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#
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removed_aliases = []
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for alias_str in aliases:
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alias = RoomAlias.from_string(alias_str)
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try:
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yield directory_handler.delete_association(requester, alias)
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removed_aliases.append(alias_str)
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except SynapseError as e:
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logger.warning("Unable to remove alias %s from old room: %s", alias, e)
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# if we didn't find any aliases, or couldn't remove anyway, we can skip the rest
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# of this.
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if not removed_aliases:
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return
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# we can now add any aliases we successfully removed to the new room.
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for alias in removed_aliases:
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try:
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yield directory_handler.create_association(
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requester,
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RoomAlias.from_string(alias),
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new_room_id,
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servers=(self.hs.hostname,),
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check_membership=False,
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)
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logger.info("Moved alias %s to new room", alias)
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except SynapseError as e:
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# I'm not really expecting this to happen, but it could if the spam
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# checking module decides it shouldn't, or similar.
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logger.error("Error adding alias %s to new room: %s", alias, e)
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# If a canonical alias event existed for the old room, fire a canonical
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# alias event for the new room with a copy of the information.
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try:
|
|
if canonical_alias_event:
|
|
yield self.event_creation_handler.create_and_send_nonmember_event(
|
|
requester,
|
|
{
|
|
"type": EventTypes.CanonicalAlias,
|
|
"state_key": "",
|
|
"room_id": new_room_id,
|
|
"sender": requester.user.to_string(),
|
|
"content": canonical_alias_event.content,
|
|
},
|
|
ratelimit=False,
|
|
)
|
|
except SynapseError as e:
|
|
# again I'm not really expecting this to fail, but if it does, I'd rather
|
|
# we returned the new room to the client at this point.
|
|
logger.error("Unable to send updated alias events in new room: %s", e)
|
|
|
|
@defer.inlineCallbacks
|
|
def create_room(self, requester, config, ratelimit=True, creator_join_profile=None):
|
|
""" Creates a new room.
|
|
|
|
Args:
|
|
requester (synapse.types.Requester):
|
|
The user who requested the room creation.
|
|
config (dict) : A dict of configuration options.
|
|
ratelimit (bool): set to False to disable the rate limiter
|
|
|
|
creator_join_profile (dict|None):
|
|
Set to override the displayname and avatar for the creating
|
|
user in this room. If unset, displayname and avatar will be
|
|
derived from the user's profile. If set, should contain the
|
|
values to go in the body of the 'join' event (typically
|
|
`avatar_url` and/or `displayname`.
|
|
|
|
Returns:
|
|
Deferred[dict]:
|
|
a dict containing the keys `room_id` and, if an alias was
|
|
requested, `room_alias`.
|
|
Raises:
|
|
SynapseError if the room ID couldn't be stored, or something went
|
|
horribly wrong.
|
|
ResourceLimitError if server is blocked to some resource being
|
|
exceeded
|
|
"""
|
|
user_id = requester.user.to_string()
|
|
|
|
yield self.auth.check_auth_blocking(user_id)
|
|
|
|
if (
|
|
self._server_notices_mxid is not None
|
|
and requester.user.to_string() == self._server_notices_mxid
|
|
):
|
|
# allow the server notices mxid to create rooms
|
|
is_requester_admin = True
|
|
else:
|
|
is_requester_admin = yield self.auth.is_server_admin(requester.user)
|
|
|
|
# Check whether the third party rules allows/changes the room create
|
|
# request.
|
|
event_allowed = yield self.third_party_event_rules.on_create_room(
|
|
requester, config, is_requester_admin=is_requester_admin
|
|
)
|
|
if not event_allowed:
|
|
raise SynapseError(
|
|
403, "You are not permitted to create rooms", Codes.FORBIDDEN
|
|
)
|
|
|
|
if not is_requester_admin and not self.spam_checker.user_may_create_room(
|
|
user_id
|
|
):
|
|
raise SynapseError(403, "You are not permitted to create rooms")
|
|
|
|
if ratelimit:
|
|
yield self.ratelimit(requester)
|
|
|
|
room_version_id = config.get(
|
|
"room_version", self.config.default_room_version.identifier
|
|
)
|
|
|
|
if not isinstance(room_version_id, string_types):
|
|
raise SynapseError(400, "room_version must be a string", Codes.BAD_JSON)
|
|
|
|
room_version = KNOWN_ROOM_VERSIONS.get(room_version_id)
|
|
if room_version is None:
|
|
raise SynapseError(
|
|
400,
|
|
"Your homeserver does not support this room version",
|
|
Codes.UNSUPPORTED_ROOM_VERSION,
|
|
)
|
|
|
|
if "room_alias_name" in config:
|
|
for wchar in string.whitespace:
|
|
if wchar in config["room_alias_name"]:
|
|
raise SynapseError(400, "Invalid characters in room alias")
|
|
|
|
room_alias = RoomAlias(config["room_alias_name"], self.hs.hostname)
|
|
mapping = yield self.store.get_association_from_room_alias(room_alias)
|
|
|
|
if mapping:
|
|
raise SynapseError(400, "Room alias already taken", Codes.ROOM_IN_USE)
|
|
else:
|
|
room_alias = None
|
|
|
|
invite_list = config.get("invite", [])
|
|
for i in invite_list:
|
|
try:
|
|
uid = UserID.from_string(i)
|
|
parse_and_validate_server_name(uid.domain)
|
|
except Exception:
|
|
raise SynapseError(400, "Invalid user_id: %s" % (i,))
|
|
|
|
yield self.event_creation_handler.assert_accepted_privacy_policy(requester)
|
|
|
|
power_level_content_override = config.get("power_level_content_override")
|
|
if (
|
|
power_level_content_override
|
|
and "users" in power_level_content_override
|
|
and user_id not in power_level_content_override["users"]
|
|
):
|
|
raise SynapseError(
|
|
400,
|
|
"Not a valid power_level_content_override: 'users' did not contain %s"
|
|
% (user_id,),
|
|
)
|
|
|
|
invite_3pid_list = config.get("invite_3pid", [])
|
|
|
|
visibility = config.get("visibility", None)
|
|
is_public = visibility == "public"
|
|
|
|
room_id = yield self._generate_room_id(
|
|
creator_id=user_id, is_public=is_public, room_version=room_version,
|
|
)
|
|
|
|
directory_handler = self.hs.get_handlers().directory_handler
|
|
if room_alias:
|
|
yield directory_handler.create_association(
|
|
requester=requester,
|
|
room_id=room_id,
|
|
room_alias=room_alias,
|
|
servers=[self.hs.hostname],
|
|
check_membership=False,
|
|
)
|
|
|
|
preset_config = config.get(
|
|
"preset",
|
|
RoomCreationPreset.PRIVATE_CHAT
|
|
if visibility == "private"
|
|
else RoomCreationPreset.PUBLIC_CHAT,
|
|
)
|
|
|
|
raw_initial_state = config.get("initial_state", [])
|
|
|
|
initial_state = OrderedDict()
|
|
for val in raw_initial_state:
|
|
initial_state[(val["type"], val.get("state_key", ""))] = val["content"]
|
|
|
|
creation_content = config.get("creation_content", {})
|
|
|
|
# override any attempt to set room versions via the creation_content
|
|
creation_content["room_version"] = room_version.identifier
|
|
|
|
yield self._send_events_for_new_room(
|
|
requester,
|
|
room_id,
|
|
preset_config=preset_config,
|
|
invite_list=invite_list,
|
|
initial_state=initial_state,
|
|
creation_content=creation_content,
|
|
room_alias=room_alias,
|
|
power_level_content_override=power_level_content_override,
|
|
creator_join_profile=creator_join_profile,
|
|
)
|
|
|
|
if "name" in config:
|
|
name = config["name"]
|
|
yield self.event_creation_handler.create_and_send_nonmember_event(
|
|
requester,
|
|
{
|
|
"type": EventTypes.Name,
|
|
"room_id": room_id,
|
|
"sender": user_id,
|
|
"state_key": "",
|
|
"content": {"name": name},
|
|
},
|
|
ratelimit=False,
|
|
)
|
|
|
|
if "topic" in config:
|
|
topic = config["topic"]
|
|
yield self.event_creation_handler.create_and_send_nonmember_event(
|
|
requester,
|
|
{
|
|
"type": EventTypes.Topic,
|
|
"room_id": room_id,
|
|
"sender": user_id,
|
|
"state_key": "",
|
|
"content": {"topic": topic},
|
|
},
|
|
ratelimit=False,
|
|
)
|
|
|
|
for invitee in invite_list:
|
|
content = {}
|
|
is_direct = config.get("is_direct", None)
|
|
if is_direct:
|
|
content["is_direct"] = is_direct
|
|
|
|
yield self.room_member_handler.update_membership(
|
|
requester,
|
|
UserID.from_string(invitee),
|
|
room_id,
|
|
"invite",
|
|
ratelimit=False,
|
|
content=content,
|
|
)
|
|
|
|
for invite_3pid in invite_3pid_list:
|
|
id_server = invite_3pid["id_server"]
|
|
id_access_token = invite_3pid.get("id_access_token") # optional
|
|
address = invite_3pid["address"]
|
|
medium = invite_3pid["medium"]
|
|
yield self.hs.get_room_member_handler().do_3pid_invite(
|
|
room_id,
|
|
requester.user,
|
|
medium,
|
|
address,
|
|
id_server,
|
|
requester,
|
|
txn_id=None,
|
|
id_access_token=id_access_token,
|
|
)
|
|
|
|
result = {"room_id": room_id}
|
|
|
|
if room_alias:
|
|
result["room_alias"] = room_alias.to_string()
|
|
|
|
return result
|
|
|
|
@defer.inlineCallbacks
|
|
def _send_events_for_new_room(
|
|
self,
|
|
creator, # A Requester object.
|
|
room_id,
|
|
preset_config,
|
|
invite_list,
|
|
initial_state,
|
|
creation_content,
|
|
room_alias=None,
|
|
power_level_content_override=None, # Doesn't apply when initial state has power level state event content
|
|
creator_join_profile=None,
|
|
):
|
|
def create(etype, content, **kwargs):
|
|
e = {"type": etype, "content": content}
|
|
|
|
e.update(event_keys)
|
|
e.update(kwargs)
|
|
|
|
return e
|
|
|
|
@defer.inlineCallbacks
|
|
def send(etype, content, **kwargs):
|
|
event = create(etype, content, **kwargs)
|
|
logger.debug("Sending %s in new room", etype)
|
|
yield self.event_creation_handler.create_and_send_nonmember_event(
|
|
creator, event, ratelimit=False
|
|
)
|
|
|
|
config = RoomCreationHandler.PRESETS_DICT[preset_config]
|
|
|
|
creator_id = creator.user.to_string()
|
|
|
|
event_keys = {"room_id": room_id, "sender": creator_id, "state_key": ""}
|
|
|
|
creation_content.update({"creator": creator_id})
|
|
yield send(etype=EventTypes.Create, content=creation_content)
|
|
|
|
logger.debug("Sending %s in new room", EventTypes.Member)
|
|
yield self.room_member_handler.update_membership(
|
|
creator,
|
|
creator.user,
|
|
room_id,
|
|
"join",
|
|
ratelimit=False,
|
|
content=creator_join_profile,
|
|
)
|
|
|
|
# We treat the power levels override specially as this needs to be one
|
|
# of the first events that get sent into a room.
|
|
pl_content = initial_state.pop((EventTypes.PowerLevels, ""), None)
|
|
if pl_content is not None:
|
|
yield send(etype=EventTypes.PowerLevels, content=pl_content)
|
|
else:
|
|
power_level_content = {
|
|
"users": {creator_id: 100},
|
|
"users_default": 0,
|
|
"events": {
|
|
EventTypes.Name: 50,
|
|
EventTypes.PowerLevels: 100,
|
|
EventTypes.RoomHistoryVisibility: 100,
|
|
EventTypes.CanonicalAlias: 50,
|
|
EventTypes.RoomAvatar: 50,
|
|
EventTypes.Tombstone: 100,
|
|
EventTypes.ServerACL: 100,
|
|
},
|
|
"events_default": 0,
|
|
"state_default": 50,
|
|
"ban": 50,
|
|
"kick": 50,
|
|
"redact": 50,
|
|
"invite": 50,
|
|
}
|
|
|
|
if config["original_invitees_have_ops"]:
|
|
for invitee in invite_list:
|
|
power_level_content["users"][invitee] = 100
|
|
|
|
# Power levels overrides are defined per chat preset
|
|
power_level_content.update(config["power_level_content_override"])
|
|
|
|
if power_level_content_override:
|
|
power_level_content.update(power_level_content_override)
|
|
|
|
yield send(etype=EventTypes.PowerLevels, content=power_level_content)
|
|
|
|
if room_alias and (EventTypes.CanonicalAlias, "") not in initial_state:
|
|
yield send(
|
|
etype=EventTypes.CanonicalAlias,
|
|
content={"alias": room_alias.to_string()},
|
|
)
|
|
|
|
if (EventTypes.JoinRules, "") not in initial_state:
|
|
yield send(
|
|
etype=EventTypes.JoinRules, content={"join_rule": config["join_rules"]}
|
|
)
|
|
|
|
if (EventTypes.RoomHistoryVisibility, "") not in initial_state:
|
|
yield send(
|
|
etype=EventTypes.RoomHistoryVisibility,
|
|
content={"history_visibility": config["history_visibility"]},
|
|
)
|
|
|
|
if config["guest_can_join"]:
|
|
if (EventTypes.GuestAccess, "") not in initial_state:
|
|
yield send(
|
|
etype=EventTypes.GuestAccess, content={"guest_access": "can_join"}
|
|
)
|
|
|
|
for (etype, state_key), content in initial_state.items():
|
|
yield send(etype=etype, state_key=state_key, content=content)
|
|
|
|
@defer.inlineCallbacks
|
|
def _generate_room_id(
|
|
self, creator_id: str, is_public: str, room_version: RoomVersion,
|
|
):
|
|
# autogen room IDs and try to create it. We may clash, so just
|
|
# try a few times till one goes through, giving up eventually.
|
|
attempts = 0
|
|
while attempts < 5:
|
|
try:
|
|
random_string = stringutils.random_string(18)
|
|
gen_room_id = RoomID(random_string, self.hs.hostname).to_string()
|
|
if isinstance(gen_room_id, bytes):
|
|
gen_room_id = gen_room_id.decode("utf-8")
|
|
yield self.store.store_room(
|
|
room_id=gen_room_id,
|
|
room_creator_user_id=creator_id,
|
|
is_public=is_public,
|
|
room_version=room_version,
|
|
)
|
|
return gen_room_id
|
|
except StoreError:
|
|
attempts += 1
|
|
raise StoreError(500, "Couldn't generate a room ID.")
|
|
|
|
|
|
class RoomContextHandler(object):
|
|
def __init__(self, hs):
|
|
self.hs = hs
|
|
self.store = hs.get_datastore()
|
|
self.storage = hs.get_storage()
|
|
self.state_store = self.storage.state
|
|
|
|
@defer.inlineCallbacks
|
|
def get_event_context(self, user, room_id, event_id, limit, event_filter):
|
|
"""Retrieves events, pagination tokens and state around a given event
|
|
in a room.
|
|
|
|
Args:
|
|
user (UserID)
|
|
room_id (str)
|
|
event_id (str)
|
|
limit (int): The maximum number of events to return in total
|
|
(excluding state).
|
|
event_filter (Filter|None): the filter to apply to the events returned
|
|
(excluding the target event_id)
|
|
|
|
Returns:
|
|
dict, or None if the event isn't found
|
|
"""
|
|
before_limit = math.floor(limit / 2.0)
|
|
after_limit = limit - before_limit
|
|
|
|
users = yield self.store.get_users_in_room(room_id)
|
|
is_peeking = user.to_string() not in users
|
|
|
|
def filter_evts(events):
|
|
return filter_events_for_client(
|
|
self.storage, user.to_string(), events, is_peeking=is_peeking
|
|
)
|
|
|
|
event = yield self.store.get_event(
|
|
event_id, get_prev_content=True, allow_none=True
|
|
)
|
|
if not event:
|
|
return None
|
|
|
|
filtered = yield (filter_evts([event]))
|
|
if not filtered:
|
|
raise AuthError(403, "You don't have permission to access that event.")
|
|
|
|
results = yield self.store.get_events_around(
|
|
room_id, event_id, before_limit, after_limit, event_filter
|
|
)
|
|
|
|
if event_filter:
|
|
results["events_before"] = event_filter.filter(results["events_before"])
|
|
results["events_after"] = event_filter.filter(results["events_after"])
|
|
|
|
results["events_before"] = yield filter_evts(results["events_before"])
|
|
results["events_after"] = yield filter_evts(results["events_after"])
|
|
# filter_evts can return a pruned event in case the user is allowed to see that
|
|
# there's something there but not see the content, so use the event that's in
|
|
# `filtered` rather than the event we retrieved from the datastore.
|
|
results["event"] = filtered[0]
|
|
|
|
if results["events_after"]:
|
|
last_event_id = results["events_after"][-1].event_id
|
|
else:
|
|
last_event_id = event_id
|
|
|
|
if event_filter and event_filter.lazy_load_members():
|
|
state_filter = StateFilter.from_lazy_load_member_list(
|
|
ev.sender
|
|
for ev in itertools.chain(
|
|
results["events_before"],
|
|
(results["event"],),
|
|
results["events_after"],
|
|
)
|
|
)
|
|
else:
|
|
state_filter = StateFilter.all()
|
|
|
|
# XXX: why do we return the state as of the last event rather than the
|
|
# first? Shouldn't we be consistent with /sync?
|
|
# https://github.com/matrix-org/matrix-doc/issues/687
|
|
|
|
state = yield self.state_store.get_state_for_events(
|
|
[last_event_id], state_filter=state_filter
|
|
)
|
|
|
|
state_events = list(state[last_event_id].values())
|
|
if event_filter:
|
|
state_events = event_filter.filter(state_events)
|
|
|
|
results["state"] = yield filter_evts(state_events)
|
|
|
|
# We use a dummy token here as we only care about the room portion of
|
|
# the token, which we replace.
|
|
token = StreamToken.START
|
|
|
|
results["start"] = token.copy_and_replace(
|
|
"room_key", results["start"]
|
|
).to_string()
|
|
|
|
results["end"] = token.copy_and_replace("room_key", results["end"]).to_string()
|
|
|
|
return results
|
|
|
|
|
|
class RoomEventSource(object):
|
|
def __init__(self, hs):
|
|
self.store = hs.get_datastore()
|
|
|
|
@defer.inlineCallbacks
|
|
def get_new_events(
|
|
self, user, from_key, limit, room_ids, is_guest, explicit_room_id=None
|
|
):
|
|
# We just ignore the key for now.
|
|
|
|
to_key = yield self.get_current_key()
|
|
|
|
from_token = RoomStreamToken.parse(from_key)
|
|
if from_token.topological:
|
|
logger.warning("Stream has topological part!!!! %r", from_key)
|
|
from_key = "s%s" % (from_token.stream,)
|
|
|
|
app_service = self.store.get_app_service_by_user_id(user.to_string())
|
|
if app_service:
|
|
# We no longer support AS users using /sync directly.
|
|
# See https://github.com/matrix-org/matrix-doc/issues/1144
|
|
raise NotImplementedError()
|
|
else:
|
|
room_events = yield self.store.get_membership_changes_for_user(
|
|
user.to_string(), from_key, to_key
|
|
)
|
|
|
|
room_to_events = yield self.store.get_room_events_stream_for_rooms(
|
|
room_ids=room_ids,
|
|
from_key=from_key,
|
|
to_key=to_key,
|
|
limit=limit or 10,
|
|
order="ASC",
|
|
)
|
|
|
|
events = list(room_events)
|
|
events.extend(e for evs, _ in room_to_events.values() for e in evs)
|
|
|
|
events.sort(key=lambda e: e.internal_metadata.order)
|
|
|
|
if limit:
|
|
events[:] = events[:limit]
|
|
|
|
if events:
|
|
end_key = events[-1].internal_metadata.after
|
|
else:
|
|
end_key = to_key
|
|
|
|
return (events, end_key)
|
|
|
|
def get_current_key(self):
|
|
return self.store.get_room_events_max_id()
|
|
|
|
def get_current_key_for_room(self, room_id):
|
|
return self.store.get_room_events_max_id(room_id)
|