mirror of
https://mau.dev/maunium/synapse.git
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2a1470cd05
Copy push rules during a room upgrade from the old room to the new room, instead of deleting them from the old room. For instance, we've defined upgrading of a room multiple times to be possible, and push rules won't be transferred on the second upgrade if they're deleted during the first. Also fix some missing yields that probably broke things quite a bit.
957 lines
35 KiB
Python
957 lines
35 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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# Copyright 2018 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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import abc
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import logging
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from six.moves import http_client
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from twisted.internet import defer
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from synapse import types
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from synapse.api.constants import EventTypes, Membership
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from synapse.api.errors import AuthError, Codes, SynapseError
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from synapse.types import RoomID, UserID
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from synapse.util.async_helpers import Linearizer
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from synapse.util.distributor import user_joined_room, user_left_room
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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class RoomMemberHandler(object):
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# TODO(paul): This handler currently contains a messy conflation of
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# low-level API that works on UserID objects and so on, and REST-level
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# API that takes ID strings and returns pagination chunks. These concerns
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# ought to be separated out a lot better.
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__metaclass__ = abc.ABCMeta
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def __init__(self, hs):
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"""
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Args:
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hs (synapse.server.HomeServer):
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"""
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self.hs = hs
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self.store = hs.get_datastore()
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self.auth = hs.get_auth()
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self.state_handler = hs.get_state_handler()
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self.config = hs.config
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self.federation_handler = hs.get_handlers().federation_handler
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self.directory_handler = hs.get_handlers().directory_handler
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self.identity_handler = hs.get_handlers().identity_handler
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self.registration_handler = hs.get_registration_handler()
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self.profile_handler = hs.get_profile_handler()
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self.event_creation_handler = hs.get_event_creation_handler()
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self.member_linearizer = Linearizer(name="member")
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self.clock = hs.get_clock()
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self.spam_checker = hs.get_spam_checker()
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self.third_party_event_rules = hs.get_third_party_event_rules()
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self._server_notices_mxid = self.config.server_notices_mxid
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self._enable_lookup = hs.config.enable_3pid_lookup
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self.allow_per_room_profiles = self.config.allow_per_room_profiles
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# This is only used to get at ratelimit function, and
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# maybe_kick_guest_users. It's fine there are multiple of these as
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# it doesn't store state.
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self.base_handler = BaseHandler(hs)
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@abc.abstractmethod
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def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
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"""Try and join a room that this server is not in
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Args:
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requester (Requester)
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remote_room_hosts (list[str]): List of servers that can be used
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to join via.
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room_id (str): Room that we are trying to join
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user (UserID): User who is trying to join
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content (dict): A dict that should be used as the content of the
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join event.
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Returns:
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Deferred
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"""
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raise NotImplementedError()
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@abc.abstractmethod
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def _remote_reject_invite(self, requester, remote_room_hosts, room_id, target):
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"""Attempt to reject an invite for a room this server is not in. If we
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fail to do so we locally mark the invite as rejected.
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Args:
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requester (Requester)
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remote_room_hosts (list[str]): List of servers to use to try and
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reject invite
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room_id (str)
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target (UserID): The user rejecting the invite
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Returns:
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Deferred[dict]: A dictionary to be returned to the client, may
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include event_id etc, or nothing if we locally rejected
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"""
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raise NotImplementedError()
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@abc.abstractmethod
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def _user_joined_room(self, target, room_id):
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"""Notifies distributor on master process that the user has joined the
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room.
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Args:
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target (UserID)
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room_id (str)
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Returns:
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Deferred|None
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"""
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raise NotImplementedError()
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@abc.abstractmethod
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def _user_left_room(self, target, room_id):
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"""Notifies distributor on master process that the user has left the
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room.
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Args:
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target (UserID)
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room_id (str)
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Returns:
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Deferred|None
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"""
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raise NotImplementedError()
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@defer.inlineCallbacks
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def _local_membership_update(
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self,
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requester,
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target,
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room_id,
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membership,
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prev_events_and_hashes,
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txn_id=None,
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ratelimit=True,
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content=None,
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require_consent=True,
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):
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user_id = target.to_string()
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if content is None:
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content = {}
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content["membership"] = membership
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if requester.is_guest:
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content["kind"] = "guest"
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event, context = yield self.event_creation_handler.create_event(
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requester,
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{
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"type": EventTypes.Member,
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"content": content,
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"room_id": room_id,
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"sender": requester.user.to_string(),
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"state_key": user_id,
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# For backwards compatibility:
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"membership": membership,
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},
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token_id=requester.access_token_id,
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txn_id=txn_id,
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prev_events_and_hashes=prev_events_and_hashes,
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require_consent=require_consent,
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)
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# Check if this event matches the previous membership event for the user.
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duplicate = yield self.event_creation_handler.deduplicate_state_event(
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event, context
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)
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if duplicate is not None:
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# Discard the new event since this membership change is a no-op.
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return duplicate
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yield self.event_creation_handler.handle_new_client_event(
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requester, event, context, extra_users=[target], ratelimit=ratelimit
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)
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prev_state_ids = yield context.get_prev_state_ids(self.store)
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prev_member_event_id = prev_state_ids.get((EventTypes.Member, user_id), None)
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if event.membership == Membership.JOIN:
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# Only fire user_joined_room if the user has actually joined the
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# room. Don't bother if the user is just changing their profile
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# info.
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newly_joined = True
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if prev_member_event_id:
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prev_member_event = yield self.store.get_event(prev_member_event_id)
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newly_joined = prev_member_event.membership != Membership.JOIN
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if newly_joined:
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yield self._user_joined_room(target, room_id)
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# Copy over direct message status and room tags if this is a join
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# on an upgraded room
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# Check if this is an upgraded room
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predecessor = yield self.store.get_room_predecessor(room_id)
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if predecessor:
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# It is an upgraded room. Copy over old tags
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self.copy_room_tags_and_direct_to_room(
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predecessor["room_id"], room_id, user_id
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)
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# Copy over push rules
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yield self.store.copy_push_rules_from_room_to_room_for_user(
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predecessor["room_id"], room_id, user_id
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)
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elif event.membership == Membership.LEAVE:
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if prev_member_event_id:
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prev_member_event = yield self.store.get_event(prev_member_event_id)
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if prev_member_event.membership == Membership.JOIN:
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yield self._user_left_room(target, room_id)
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return event
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@defer.inlineCallbacks
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def copy_room_tags_and_direct_to_room(self, old_room_id, new_room_id, user_id):
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"""Copies the tags and direct room state from one room to another.
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Args:
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old_room_id (str)
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new_room_id (str)
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user_id (str)
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Returns:
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Deferred[None]
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"""
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# Retrieve user account data for predecessor room
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user_account_data, _ = yield self.store.get_account_data_for_user(user_id)
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# Copy direct message state if applicable
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direct_rooms = user_account_data.get("m.direct", {})
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# Check which key this room is under
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if isinstance(direct_rooms, dict):
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for key, room_id_list in direct_rooms.items():
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if old_room_id in room_id_list and new_room_id not in room_id_list:
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# Add new room_id to this key
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direct_rooms[key].append(new_room_id)
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# Save back to user's m.direct account data
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yield self.store.add_account_data_for_user(
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user_id, "m.direct", direct_rooms
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)
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break
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# Copy room tags if applicable
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room_tags = yield self.store.get_tags_for_room(user_id, old_room_id)
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# Copy each room tag to the new room
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for tag, tag_content in room_tags.items():
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yield self.store.add_tag_to_room(user_id, new_room_id, tag, tag_content)
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@defer.inlineCallbacks
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def update_membership(
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self,
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requester,
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target,
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room_id,
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action,
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txn_id=None,
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remote_room_hosts=None,
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third_party_signed=None,
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ratelimit=True,
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content=None,
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require_consent=True,
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):
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key = (room_id,)
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with (yield self.member_linearizer.queue(key)):
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result = yield self._update_membership(
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requester,
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target,
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room_id,
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action,
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txn_id=txn_id,
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remote_room_hosts=remote_room_hosts,
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third_party_signed=third_party_signed,
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ratelimit=ratelimit,
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content=content,
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require_consent=require_consent,
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)
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return result
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@defer.inlineCallbacks
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def _update_membership(
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self,
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requester,
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target,
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room_id,
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action,
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txn_id=None,
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remote_room_hosts=None,
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third_party_signed=None,
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ratelimit=True,
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content=None,
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require_consent=True,
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):
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content_specified = bool(content)
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if content is None:
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content = {}
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else:
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# We do a copy here as we potentially change some keys
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# later on.
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content = dict(content)
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if not self.allow_per_room_profiles:
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# Strip profile data, knowing that new profile data will be added to the
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# event's content in event_creation_handler.create_event() using the target's
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# global profile.
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content.pop("displayname", None)
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content.pop("avatar_url", None)
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effective_membership_state = action
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if action in ["kick", "unban"]:
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effective_membership_state = "leave"
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# if this is a join with a 3pid signature, we may need to turn a 3pid
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# invite into a normal invite before we can handle the join.
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if third_party_signed is not None:
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yield self.federation_handler.exchange_third_party_invite(
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third_party_signed["sender"],
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target.to_string(),
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room_id,
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third_party_signed,
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)
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if not remote_room_hosts:
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remote_room_hosts = []
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if effective_membership_state not in ("leave", "ban"):
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is_blocked = yield self.store.is_room_blocked(room_id)
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if is_blocked:
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raise SynapseError(403, "This room has been blocked on this server")
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if effective_membership_state == Membership.INVITE:
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# block any attempts to invite the server notices mxid
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if target.to_string() == self._server_notices_mxid:
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raise SynapseError(http_client.FORBIDDEN, "Cannot invite this user")
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block_invite = False
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if (
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self._server_notices_mxid is not None
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and requester.user.to_string() == self._server_notices_mxid
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):
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# allow the server notices mxid to send invites
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is_requester_admin = True
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else:
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is_requester_admin = yield self.auth.is_server_admin(requester.user)
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if not is_requester_admin:
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if self.config.block_non_admin_invites:
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logger.info(
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"Blocking invite: user is not admin and non-admin "
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"invites disabled"
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)
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block_invite = True
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if not self.spam_checker.user_may_invite(
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requester.user.to_string(), target.to_string(), room_id
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):
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logger.info("Blocking invite due to spam checker")
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block_invite = True
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if block_invite:
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raise SynapseError(403, "Invites have been disabled on this server")
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prev_events_and_hashes = yield self.store.get_prev_events_for_room(room_id)
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latest_event_ids = (event_id for (event_id, _, _) in prev_events_and_hashes)
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current_state_ids = yield self.state_handler.get_current_state_ids(
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room_id, latest_event_ids=latest_event_ids
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)
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# TODO: Refactor into dictionary of explicitly allowed transitions
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# between old and new state, with specific error messages for some
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# transitions and generic otherwise
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old_state_id = current_state_ids.get((EventTypes.Member, target.to_string()))
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if old_state_id:
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old_state = yield self.store.get_event(old_state_id, allow_none=True)
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old_membership = old_state.content.get("membership") if old_state else None
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if action == "unban" and old_membership != "ban":
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raise SynapseError(
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403,
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"Cannot unban user who was not banned"
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" (membership=%s)" % old_membership,
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errcode=Codes.BAD_STATE,
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)
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if old_membership == "ban" and action != "unban":
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raise SynapseError(
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403,
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"Cannot %s user who was banned" % (action,),
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errcode=Codes.BAD_STATE,
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)
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if old_state:
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same_content = content == old_state.content
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same_membership = old_membership == effective_membership_state
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same_sender = requester.user.to_string() == old_state.sender
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if same_sender and same_membership and same_content:
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return old_state
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if old_membership in ["ban", "leave"] and action == "kick":
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raise AuthError(403, "The target user is not in the room")
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# we don't allow people to reject invites to the server notice
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# room, but they can leave it once they are joined.
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if (
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old_membership == Membership.INVITE
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and effective_membership_state == Membership.LEAVE
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):
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is_blocked = yield self._is_server_notice_room(room_id)
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if is_blocked:
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raise SynapseError(
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http_client.FORBIDDEN,
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"You cannot reject this invite",
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errcode=Codes.CANNOT_LEAVE_SERVER_NOTICE_ROOM,
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)
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else:
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if action == "kick":
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raise AuthError(403, "The target user is not in the room")
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is_host_in_room = yield self._is_host_in_room(current_state_ids)
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if effective_membership_state == Membership.JOIN:
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if requester.is_guest:
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guest_can_join = yield self._can_guest_join(current_state_ids)
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if not guest_can_join:
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# This should be an auth check, but guests are a local concept,
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# so don't really fit into the general auth process.
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raise AuthError(403, "Guest access not allowed")
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if not is_host_in_room:
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inviter = yield self._get_inviter(target.to_string(), room_id)
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if inviter and not self.hs.is_mine(inviter):
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remote_room_hosts.append(inviter.domain)
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content["membership"] = Membership.JOIN
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profile = self.profile_handler
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if not content_specified:
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content["displayname"] = yield profile.get_displayname(target)
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content["avatar_url"] = yield profile.get_avatar_url(target)
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if requester.is_guest:
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content["kind"] = "guest"
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ret = yield self._remote_join(
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requester, remote_room_hosts, room_id, target, content
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)
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return ret
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elif effective_membership_state == Membership.LEAVE:
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if not is_host_in_room:
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# perhaps we've been invited
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inviter = yield self._get_inviter(target.to_string(), room_id)
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if not inviter:
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raise SynapseError(404, "Not a known room")
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if self.hs.is_mine(inviter):
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# the inviter was on our server, but has now left. Carry on
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# with the normal rejection codepath.
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#
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# This is a bit of a hack, because the room might still be
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# active on other servers.
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pass
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else:
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# send the rejection to the inviter's HS.
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remote_room_hosts = remote_room_hosts + [inviter.domain]
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res = yield self._remote_reject_invite(
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requester, remote_room_hosts, room_id, target
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)
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return res
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res = yield self._local_membership_update(
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requester=requester,
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target=target,
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room_id=room_id,
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membership=effective_membership_state,
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txn_id=txn_id,
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ratelimit=ratelimit,
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prev_events_and_hashes=prev_events_and_hashes,
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content=content,
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require_consent=require_consent,
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)
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return res
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@defer.inlineCallbacks
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def send_membership_event(self, requester, event, context, ratelimit=True):
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"""
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Change the membership status of a user in a room.
|
|
|
|
Args:
|
|
requester (Requester): The local user who requested the membership
|
|
event. If None, certain checks, like whether this homeserver can
|
|
act as the sender, will be skipped.
|
|
event (SynapseEvent): The membership event.
|
|
context: The context of the event.
|
|
ratelimit (bool): Whether to rate limit this request.
|
|
Raises:
|
|
SynapseError if there was a problem changing the membership.
|
|
"""
|
|
target_user = UserID.from_string(event.state_key)
|
|
room_id = event.room_id
|
|
|
|
if requester is not None:
|
|
sender = UserID.from_string(event.sender)
|
|
assert (
|
|
sender == requester.user
|
|
), "Sender (%s) must be same as requester (%s)" % (sender, requester.user)
|
|
assert self.hs.is_mine(sender), "Sender must be our own: %s" % (sender,)
|
|
else:
|
|
requester = types.create_requester(target_user)
|
|
|
|
prev_event = yield self.event_creation_handler.deduplicate_state_event(
|
|
event, context
|
|
)
|
|
if prev_event is not None:
|
|
return
|
|
|
|
prev_state_ids = yield context.get_prev_state_ids(self.store)
|
|
if event.membership == Membership.JOIN:
|
|
if requester.is_guest:
|
|
guest_can_join = yield self._can_guest_join(prev_state_ids)
|
|
if not guest_can_join:
|
|
# This should be an auth check, but guests are a local concept,
|
|
# so don't really fit into the general auth process.
|
|
raise AuthError(403, "Guest access not allowed")
|
|
|
|
if event.membership not in (Membership.LEAVE, Membership.BAN):
|
|
is_blocked = yield self.store.is_room_blocked(room_id)
|
|
if is_blocked:
|
|
raise SynapseError(403, "This room has been blocked on this server")
|
|
|
|
yield self.event_creation_handler.handle_new_client_event(
|
|
requester, event, context, extra_users=[target_user], ratelimit=ratelimit
|
|
)
|
|
|
|
prev_member_event_id = prev_state_ids.get(
|
|
(EventTypes.Member, event.state_key), None
|
|
)
|
|
|
|
if event.membership == Membership.JOIN:
|
|
# Only fire user_joined_room if the user has actually joined the
|
|
# room. Don't bother if the user is just changing their profile
|
|
# info.
|
|
newly_joined = True
|
|
if prev_member_event_id:
|
|
prev_member_event = yield self.store.get_event(prev_member_event_id)
|
|
newly_joined = prev_member_event.membership != Membership.JOIN
|
|
if newly_joined:
|
|
yield self._user_joined_room(target_user, room_id)
|
|
elif event.membership == Membership.LEAVE:
|
|
if prev_member_event_id:
|
|
prev_member_event = yield self.store.get_event(prev_member_event_id)
|
|
if prev_member_event.membership == Membership.JOIN:
|
|
yield self._user_left_room(target_user, room_id)
|
|
|
|
@defer.inlineCallbacks
|
|
def _can_guest_join(self, current_state_ids):
|
|
"""
|
|
Returns whether a guest can join a room based on its current state.
|
|
"""
|
|
guest_access_id = current_state_ids.get((EventTypes.GuestAccess, ""), None)
|
|
if not guest_access_id:
|
|
return False
|
|
|
|
guest_access = yield self.store.get_event(guest_access_id)
|
|
|
|
return (
|
|
guest_access
|
|
and guest_access.content
|
|
and "guest_access" in guest_access.content
|
|
and guest_access.content["guest_access"] == "can_join"
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def lookup_room_alias(self, room_alias):
|
|
"""
|
|
Get the room ID associated with a room alias.
|
|
|
|
Args:
|
|
room_alias (RoomAlias): The alias to look up.
|
|
Returns:
|
|
A tuple of:
|
|
The room ID as a RoomID object.
|
|
Hosts likely to be participating in the room ([str]).
|
|
Raises:
|
|
SynapseError if room alias could not be found.
|
|
"""
|
|
directory_handler = self.directory_handler
|
|
mapping = yield directory_handler.get_association(room_alias)
|
|
|
|
if not mapping:
|
|
raise SynapseError(404, "No such room alias")
|
|
|
|
room_id = mapping["room_id"]
|
|
servers = mapping["servers"]
|
|
|
|
# put the server which owns the alias at the front of the server list.
|
|
if room_alias.domain in servers:
|
|
servers.remove(room_alias.domain)
|
|
servers.insert(0, room_alias.domain)
|
|
|
|
return RoomID.from_string(room_id), servers
|
|
|
|
@defer.inlineCallbacks
|
|
def _get_inviter(self, user_id, room_id):
|
|
invite = yield self.store.get_invite_for_user_in_room(
|
|
user_id=user_id, room_id=room_id
|
|
)
|
|
if invite:
|
|
return UserID.from_string(invite.sender)
|
|
|
|
@defer.inlineCallbacks
|
|
def do_3pid_invite(
|
|
self,
|
|
room_id,
|
|
inviter,
|
|
medium,
|
|
address,
|
|
id_server,
|
|
requester,
|
|
txn_id,
|
|
id_access_token=None,
|
|
):
|
|
if self.config.block_non_admin_invites:
|
|
is_requester_admin = yield self.auth.is_server_admin(requester.user)
|
|
if not is_requester_admin:
|
|
raise SynapseError(
|
|
403, "Invites have been disabled on this server", Codes.FORBIDDEN
|
|
)
|
|
|
|
# We need to rate limit *before* we send out any 3PID invites, so we
|
|
# can't just rely on the standard ratelimiting of events.
|
|
yield self.base_handler.ratelimit(requester)
|
|
|
|
can_invite = yield self.third_party_event_rules.check_threepid_can_be_invited(
|
|
medium, address, room_id
|
|
)
|
|
if not can_invite:
|
|
raise SynapseError(
|
|
403,
|
|
"This third-party identifier can not be invited in this room",
|
|
Codes.FORBIDDEN,
|
|
)
|
|
|
|
if not self._enable_lookup:
|
|
raise SynapseError(
|
|
403, "Looking up third-party identifiers is denied from this server"
|
|
)
|
|
|
|
invitee = yield self.identity_handler.lookup_3pid(
|
|
id_server, medium, address, id_access_token
|
|
)
|
|
|
|
if invitee:
|
|
yield self.update_membership(
|
|
requester, UserID.from_string(invitee), room_id, "invite", txn_id=txn_id
|
|
)
|
|
else:
|
|
yield self._make_and_store_3pid_invite(
|
|
requester,
|
|
id_server,
|
|
medium,
|
|
address,
|
|
room_id,
|
|
inviter,
|
|
txn_id=txn_id,
|
|
id_access_token=id_access_token,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _make_and_store_3pid_invite(
|
|
self,
|
|
requester,
|
|
id_server,
|
|
medium,
|
|
address,
|
|
room_id,
|
|
user,
|
|
txn_id,
|
|
id_access_token=None,
|
|
):
|
|
room_state = yield self.state_handler.get_current_state(room_id)
|
|
|
|
inviter_display_name = ""
|
|
inviter_avatar_url = ""
|
|
member_event = room_state.get((EventTypes.Member, user.to_string()))
|
|
if member_event:
|
|
inviter_display_name = member_event.content.get("displayname", "")
|
|
inviter_avatar_url = member_event.content.get("avatar_url", "")
|
|
|
|
# if user has no display name, default to their MXID
|
|
if not inviter_display_name:
|
|
inviter_display_name = user.to_string()
|
|
|
|
canonical_room_alias = ""
|
|
canonical_alias_event = room_state.get((EventTypes.CanonicalAlias, ""))
|
|
if canonical_alias_event:
|
|
canonical_room_alias = canonical_alias_event.content.get("alias", "")
|
|
|
|
room_name = ""
|
|
room_name_event = room_state.get((EventTypes.Name, ""))
|
|
if room_name_event:
|
|
room_name = room_name_event.content.get("name", "")
|
|
|
|
room_join_rules = ""
|
|
join_rules_event = room_state.get((EventTypes.JoinRules, ""))
|
|
if join_rules_event:
|
|
room_join_rules = join_rules_event.content.get("join_rule", "")
|
|
|
|
room_avatar_url = ""
|
|
room_avatar_event = room_state.get((EventTypes.RoomAvatar, ""))
|
|
if room_avatar_event:
|
|
room_avatar_url = room_avatar_event.content.get("url", "")
|
|
|
|
token, public_keys, fallback_public_key, display_name = (
|
|
yield self.identity_handler.ask_id_server_for_third_party_invite(
|
|
requester=requester,
|
|
id_server=id_server,
|
|
medium=medium,
|
|
address=address,
|
|
room_id=room_id,
|
|
inviter_user_id=user.to_string(),
|
|
room_alias=canonical_room_alias,
|
|
room_avatar_url=room_avatar_url,
|
|
room_join_rules=room_join_rules,
|
|
room_name=room_name,
|
|
inviter_display_name=inviter_display_name,
|
|
inviter_avatar_url=inviter_avatar_url,
|
|
id_access_token=id_access_token,
|
|
)
|
|
)
|
|
|
|
yield self.event_creation_handler.create_and_send_nonmember_event(
|
|
requester,
|
|
{
|
|
"type": EventTypes.ThirdPartyInvite,
|
|
"content": {
|
|
"display_name": display_name,
|
|
"public_keys": public_keys,
|
|
# For backwards compatibility:
|
|
"key_validity_url": fallback_public_key["key_validity_url"],
|
|
"public_key": fallback_public_key["public_key"],
|
|
},
|
|
"room_id": room_id,
|
|
"sender": user.to_string(),
|
|
"state_key": token,
|
|
},
|
|
ratelimit=False,
|
|
txn_id=txn_id,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _is_host_in_room(self, current_state_ids):
|
|
# Have we just created the room, and is this about to be the very
|
|
# first member event?
|
|
create_event_id = current_state_ids.get(("m.room.create", ""))
|
|
if len(current_state_ids) == 1 and create_event_id:
|
|
# We can only get here if we're in the process of creating the room
|
|
return True
|
|
|
|
for etype, state_key in current_state_ids:
|
|
if etype != EventTypes.Member or not self.hs.is_mine_id(state_key):
|
|
continue
|
|
|
|
event_id = current_state_ids[(etype, state_key)]
|
|
event = yield self.store.get_event(event_id, allow_none=True)
|
|
if not event:
|
|
continue
|
|
|
|
if event.membership == Membership.JOIN:
|
|
return True
|
|
|
|
return False
|
|
|
|
@defer.inlineCallbacks
|
|
def _is_server_notice_room(self, room_id):
|
|
if self._server_notices_mxid is None:
|
|
return False
|
|
user_ids = yield self.store.get_users_in_room(room_id)
|
|
return self._server_notices_mxid in user_ids
|
|
|
|
|
|
class RoomMemberMasterHandler(RoomMemberHandler):
|
|
def __init__(self, hs):
|
|
super(RoomMemberMasterHandler, self).__init__(hs)
|
|
|
|
self.distributor = hs.get_distributor()
|
|
self.distributor.declare("user_joined_room")
|
|
self.distributor.declare("user_left_room")
|
|
|
|
@defer.inlineCallbacks
|
|
def _is_remote_room_too_complex(self, room_id, remote_room_hosts):
|
|
"""
|
|
Check if complexity of a remote room is too great.
|
|
|
|
Args:
|
|
room_id (str)
|
|
remote_room_hosts (list[str])
|
|
|
|
Returns: bool of whether the complexity is too great, or None
|
|
if unable to be fetched
|
|
"""
|
|
max_complexity = self.hs.config.limit_remote_rooms.complexity
|
|
complexity = yield self.federation_handler.get_room_complexity(
|
|
remote_room_hosts, room_id
|
|
)
|
|
|
|
if complexity:
|
|
return complexity["v1"] > max_complexity
|
|
return None
|
|
|
|
@defer.inlineCallbacks
|
|
def _is_local_room_too_complex(self, room_id):
|
|
"""
|
|
Check if the complexity of a local room is too great.
|
|
|
|
Args:
|
|
room_id (str)
|
|
|
|
Returns: bool
|
|
"""
|
|
max_complexity = self.hs.config.limit_remote_rooms.complexity
|
|
complexity = yield self.store.get_room_complexity(room_id)
|
|
|
|
return complexity["v1"] > max_complexity
|
|
|
|
@defer.inlineCallbacks
|
|
def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
|
|
"""Implements RoomMemberHandler._remote_join
|
|
"""
|
|
# filter ourselves out of remote_room_hosts: do_invite_join ignores it
|
|
# and if it is the only entry we'd like to return a 404 rather than a
|
|
# 500.
|
|
remote_room_hosts = [
|
|
host for host in remote_room_hosts if host != self.hs.hostname
|
|
]
|
|
|
|
if len(remote_room_hosts) == 0:
|
|
raise SynapseError(404, "No known servers")
|
|
|
|
if self.hs.config.limit_remote_rooms.enabled:
|
|
# Fetch the room complexity
|
|
too_complex = yield self._is_remote_room_too_complex(
|
|
room_id, remote_room_hosts
|
|
)
|
|
if too_complex is True:
|
|
raise SynapseError(
|
|
code=400,
|
|
msg=self.hs.config.limit_remote_rooms.complexity_error,
|
|
errcode=Codes.RESOURCE_LIMIT_EXCEEDED,
|
|
)
|
|
|
|
# We don't do an auth check if we are doing an invite
|
|
# join dance for now, since we're kinda implicitly checking
|
|
# that we are allowed to join when we decide whether or not we
|
|
# need to do the invite/join dance.
|
|
yield self.federation_handler.do_invite_join(
|
|
remote_room_hosts, room_id, user.to_string(), content
|
|
)
|
|
yield self._user_joined_room(user, room_id)
|
|
|
|
# Check the room we just joined wasn't too large, if we didn't fetch the
|
|
# complexity of it before.
|
|
if self.hs.config.limit_remote_rooms.enabled:
|
|
if too_complex is False:
|
|
# We checked, and we're under the limit.
|
|
return
|
|
|
|
# Check again, but with the local state events
|
|
too_complex = yield self._is_local_room_too_complex(room_id)
|
|
|
|
if too_complex is False:
|
|
# We're under the limit.
|
|
return
|
|
|
|
# The room is too large. Leave.
|
|
requester = types.create_requester(user, None, False, None)
|
|
yield self.update_membership(
|
|
requester=requester, target=user, room_id=room_id, action="leave"
|
|
)
|
|
raise SynapseError(
|
|
code=400,
|
|
msg=self.hs.config.limit_remote_rooms.complexity_error,
|
|
errcode=Codes.RESOURCE_LIMIT_EXCEEDED,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _remote_reject_invite(self, requester, remote_room_hosts, room_id, target):
|
|
"""Implements RoomMemberHandler._remote_reject_invite
|
|
"""
|
|
fed_handler = self.federation_handler
|
|
try:
|
|
ret = yield fed_handler.do_remotely_reject_invite(
|
|
remote_room_hosts, room_id, target.to_string()
|
|
)
|
|
return ret
|
|
except Exception as e:
|
|
# if we were unable to reject the exception, just mark
|
|
# it as rejected on our end and plough ahead.
|
|
#
|
|
# The 'except' clause is very broad, but we need to
|
|
# capture everything from DNS failures upwards
|
|
#
|
|
logger.warning("Failed to reject invite: %s", e)
|
|
|
|
yield self.store.locally_reject_invite(target.to_string(), room_id)
|
|
return {}
|
|
|
|
def _user_joined_room(self, target, room_id):
|
|
"""Implements RoomMemberHandler._user_joined_room
|
|
"""
|
|
return user_joined_room(self.distributor, target, room_id)
|
|
|
|
def _user_left_room(self, target, room_id):
|
|
"""Implements RoomMemberHandler._user_left_room
|
|
"""
|
|
return user_left_room(self.distributor, target, room_id)
|
|
|
|
@defer.inlineCallbacks
|
|
def forget(self, user, room_id):
|
|
user_id = user.to_string()
|
|
|
|
member = yield self.state_handler.get_current_state(
|
|
room_id=room_id, event_type=EventTypes.Member, state_key=user_id
|
|
)
|
|
membership = member.membership if member else None
|
|
|
|
if membership is not None and membership not in [
|
|
Membership.LEAVE,
|
|
Membership.BAN,
|
|
]:
|
|
raise SynapseError(400, "User %s in room %s" % (user_id, room_id))
|
|
|
|
if membership:
|
|
yield self.store.forget(user_id, room_id)
|