mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-24 22:49:24 -05:00
df727f2126
If rejecting a remote invite fails with an error response don't fail the entire request; instead mark the invite as locally rejected. This fixes the bug where users can get stuck invites which they can neither accept nor reject.
433 lines
14 KiB
Python
433 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from twisted.internet import defer
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from collections import namedtuple
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from ._base import SQLBaseStore
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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from synapse.api.constants import Membership
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from synapse.types import UserID
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import logging
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logger = logging.getLogger(__name__)
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RoomsForUser = namedtuple(
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"RoomsForUser",
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("room_id", "sender", "membership", "event_id", "stream_ordering")
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)
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class RoomMemberStore(SQLBaseStore):
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def _store_room_members_txn(self, txn, events, backfilled):
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"""Store a room member in the database.
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"""
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self._simple_insert_many_txn(
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txn,
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table="room_memberships",
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values=[
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{
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"event_id": event.event_id,
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"user_id": event.state_key,
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"sender": event.user_id,
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"room_id": event.room_id,
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"membership": event.membership,
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}
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for event in events
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]
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)
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for event in events:
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txn.call_after(self.get_rooms_for_user.invalidate, (event.state_key,))
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txn.call_after(self.get_joined_hosts_for_room.invalidate, (event.room_id,))
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txn.call_after(self.get_users_in_room.invalidate, (event.room_id,))
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txn.call_after(
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self._membership_stream_cache.entity_has_changed,
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event.state_key, event.internal_metadata.stream_ordering
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)
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txn.call_after(
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self.get_invited_rooms_for_user.invalidate, (event.state_key,)
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)
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# We update the local_invites table only if the event is "current",
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# i.e., its something that has just happened.
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# The only current event that can also be an outlier is if its an
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# invite that has come in across federation.
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is_new_state = not backfilled and (
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not event.internal_metadata.is_outlier()
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or event.internal_metadata.is_invite_from_remote()
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)
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is_mine = self.hs.is_mine_id(event.state_key)
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if is_new_state and is_mine:
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if event.membership == Membership.INVITE:
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self._simple_insert_txn(
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txn,
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table="local_invites",
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values={
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"event_id": event.event_id,
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"invitee": event.state_key,
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"inviter": event.sender,
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"room_id": event.room_id,
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"stream_id": event.internal_metadata.stream_ordering,
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}
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)
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else:
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sql = (
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"UPDATE local_invites SET stream_id = ?, replaced_by = ? WHERE"
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" room_id = ? AND invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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txn.execute(sql, (
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event.internal_metadata.stream_ordering,
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event.event_id,
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event.room_id,
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event.state_key,
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))
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@defer.inlineCallbacks
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def locally_reject_invite(self, user_id, room_id):
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sql = (
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"UPDATE local_invites SET stream_id = ?, locally_rejected = ? WHERE"
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" room_id = ? AND invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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def f(txn, stream_ordering):
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txn.execute(sql, (
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stream_ordering,
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True,
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room_id,
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user_id,
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))
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with self._stream_id_gen.get_next() as stream_ordering:
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yield self.runInteraction("locally_reject_invite", f, stream_ordering)
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def get_room_member(self, user_id, room_id):
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"""Retrieve the current state of a room member.
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Args:
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user_id (str): The member's user ID.
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room_id (str): The room the member is in.
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Returns:
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Deferred: Results in a MembershipEvent or None.
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"""
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return self.runInteraction(
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"get_room_member",
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self._get_members_events_txn,
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room_id,
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user_id=user_id,
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).addCallback(
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self._get_events
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).addCallback(
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lambda events: events[0] if events else None
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)
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@cached(max_entries=5000)
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def get_users_in_room(self, room_id):
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def f(txn):
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rows = self._get_members_rows_txn(
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txn,
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room_id=room_id,
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membership=Membership.JOIN,
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)
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return [r["user_id"] for r in rows]
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return self.runInteraction("get_users_in_room", f)
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def get_room_members(self, room_id, membership=None):
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"""Retrieve the current room member list for a room.
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Args:
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room_id (str): The room to get the list of members.
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membership (synapse.api.constants.Membership): The filter to apply
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to this list, or None to return all members with some state
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associated with this room.
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Returns:
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list of namedtuples representing the members in this room.
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"""
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return self.runInteraction(
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"get_room_members",
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self._get_members_events_txn,
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room_id,
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membership=membership,
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).addCallback(self._get_events)
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@cached()
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def get_invited_rooms_for_user(self, user_id):
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""" Get all the rooms the user is invited to
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Args:
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user_id (str): The user ID.
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Returns:
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A deferred list of RoomsForUser.
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"""
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return self.get_rooms_for_user_where_membership_is(
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user_id, [Membership.INVITE]
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)
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@defer.inlineCallbacks
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def get_invite_for_user_in_room(self, user_id, room_id):
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"""Gets the invite for the given user and room
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Args:
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user_id (str)
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room_id (str)
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Returns:
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Deferred: Resolves to either a RoomsForUser or None if no invite was
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found.
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"""
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invites = yield self.get_invited_rooms_for_user(user_id)
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for invite in invites:
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if invite.room_id == room_id:
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defer.returnValue(invite)
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defer.returnValue(None)
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def get_leave_and_ban_events_for_user(self, user_id):
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""" Get all the leave events for a user
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Args:
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user_id (str): The user ID.
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Returns:
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A deferred list of event objects.
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"""
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return self.get_rooms_for_user_where_membership_is(
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user_id, (Membership.LEAVE, Membership.BAN)
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).addCallback(lambda leaves: self._get_events([
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leave.event_id for leave in leaves
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]))
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def get_rooms_for_user_where_membership_is(self, user_id, membership_list):
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""" Get all the rooms for this user where the membership for this user
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matches one in the membership list.
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Args:
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user_id (str): The user ID.
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membership_list (list): A list of synapse.api.constants.Membership
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values which the user must be in.
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Returns:
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A list of dictionary objects, with room_id, membership and sender
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defined.
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"""
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if not membership_list:
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return defer.succeed(None)
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return self.runInteraction(
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"get_rooms_for_user_where_membership_is",
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self._get_rooms_for_user_where_membership_is_txn,
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user_id, membership_list
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)
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def _get_rooms_for_user_where_membership_is_txn(self, txn, user_id,
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membership_list):
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do_invite = Membership.INVITE in membership_list
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membership_list = [m for m in membership_list if m != Membership.INVITE]
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results = []
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if membership_list:
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where_clause = "user_id = ? AND (%s) AND forgotten = 0" % (
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" OR ".join(["membership = ?" for _ in membership_list]),
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)
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args = [user_id]
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args.extend(membership_list)
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sql = (
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"SELECT m.room_id, m.sender, m.membership, m.event_id, e.stream_ordering"
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" FROM current_state_events as c"
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" INNER JOIN room_memberships as m"
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" ON m.event_id = c.event_id"
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" INNER JOIN events as e"
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" ON e.event_id = c.event_id"
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" AND m.room_id = c.room_id"
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" AND m.user_id = c.state_key"
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" WHERE %s"
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) % (where_clause,)
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txn.execute(sql, args)
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results = [
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RoomsForUser(**r) for r in self.cursor_to_dict(txn)
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]
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if do_invite:
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sql = (
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"SELECT i.room_id, inviter, i.event_id, e.stream_ordering"
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" FROM local_invites as i"
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" INNER JOIN events as e USING (event_id)"
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" WHERE invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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txn.execute(sql, (user_id,))
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results.extend(RoomsForUser(
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room_id=r["room_id"],
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sender=r["inviter"],
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event_id=r["event_id"],
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stream_ordering=r["stream_ordering"],
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membership=Membership.INVITE,
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) for r in self.cursor_to_dict(txn))
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return results
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@cached(max_entries=5000)
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def get_joined_hosts_for_room(self, room_id):
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return self.runInteraction(
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"get_joined_hosts_for_room",
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self._get_joined_hosts_for_room_txn,
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room_id,
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)
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def _get_joined_hosts_for_room_txn(self, txn, room_id):
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rows = self._get_members_rows_txn(
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txn,
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room_id, membership=Membership.JOIN
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)
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joined_domains = set(
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UserID.from_string(r["user_id"]).domain
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for r in rows
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)
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return joined_domains
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def _get_members_events_txn(self, txn, room_id, membership=None, user_id=None):
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rows = self._get_members_rows_txn(
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txn,
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room_id, membership, user_id,
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)
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return [r["event_id"] for r in rows]
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def _get_members_rows_txn(self, txn, room_id, membership=None, user_id=None):
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where_clause = "c.room_id = ?"
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where_values = [room_id]
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if membership:
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where_clause += " AND m.membership = ?"
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where_values.append(membership)
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if user_id:
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where_clause += " AND m.user_id = ?"
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where_values.append(user_id)
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sql = (
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"SELECT m.* FROM room_memberships as m"
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" INNER JOIN current_state_events as c"
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" ON m.event_id = c.event_id "
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" AND m.room_id = c.room_id "
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" AND m.user_id = c.state_key"
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" WHERE %(where)s"
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) % {
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"where": where_clause,
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}
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txn.execute(sql, where_values)
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rows = self.cursor_to_dict(txn)
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return rows
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@cached(max_entries=5000)
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def get_rooms_for_user(self, user_id):
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return self.get_rooms_for_user_where_membership_is(
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user_id, membership_list=[Membership.JOIN],
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)
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@defer.inlineCallbacks
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def forget(self, user_id, room_id):
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"""Indicate that user_id wishes to discard history for room_id."""
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def f(txn):
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sql = (
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"UPDATE"
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" room_memberships"
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" SET"
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" forgotten = 1"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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)
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txn.execute(sql, (user_id, room_id))
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yield self.runInteraction("forget_membership", f)
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self.was_forgotten_at.invalidate_all()
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self.who_forgot_in_room.invalidate_all()
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self.did_forget.invalidate((user_id, room_id))
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@cachedInlineCallbacks(num_args=2)
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def did_forget(self, user_id, room_id):
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"""Returns whether user_id has elected to discard history for room_id.
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Returns False if they have since re-joined."""
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def f(txn):
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sql = (
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"SELECT"
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" COUNT(*)"
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" FROM"
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" room_memberships"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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" AND"
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" forgotten = 0"
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)
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txn.execute(sql, (user_id, room_id))
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rows = txn.fetchall()
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return rows[0][0]
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count = yield self.runInteraction("did_forget_membership", f)
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defer.returnValue(count == 0)
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@cachedInlineCallbacks(num_args=3)
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def was_forgotten_at(self, user_id, room_id, event_id):
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"""Returns whether user_id has elected to discard history for room_id at event_id.
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event_id must be a membership event."""
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def f(txn):
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sql = (
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"SELECT"
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" forgotten"
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" FROM"
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" room_memberships"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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" AND"
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" event_id = ?"
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)
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txn.execute(sql, (user_id, room_id, event_id))
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rows = txn.fetchall()
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return rows[0][0]
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forgot = yield self.runInteraction("did_forget_membership_at", f)
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defer.returnValue(forgot == 1)
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@cached()
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def who_forgot_in_room(self, room_id):
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return self._simple_select_list(
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table="room_memberships",
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retcols=("user_id", "event_id"),
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keyvalues={
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"room_id": room_id,
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"forgotten": 1,
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},
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desc="who_forgot"
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)
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