mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-10 12:14:19 -05:00
1013 lines
37 KiB
Python
1013 lines
37 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2016 OpenMarket Ltd
|
|
# Copyright 2018 New Vector Ltd
|
|
# Copyright 2019 The Matrix.org Foundation C.I.C.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import abc
|
|
import logging
|
|
|
|
from six.moves import http_client
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse import types
|
|
from synapse.api.constants import EventTypes, Membership
|
|
from synapse.api.errors import AuthError, Codes, SynapseError
|
|
from synapse.types import RoomID, UserID
|
|
from synapse.util.async_helpers import Linearizer
|
|
from synapse.util.distributor import user_joined_room, user_left_room
|
|
|
|
from ._base import BaseHandler
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class RoomMemberHandler(object):
|
|
# TODO(paul): This handler currently contains a messy conflation of
|
|
# low-level API that works on UserID objects and so on, and REST-level
|
|
# API that takes ID strings and returns pagination chunks. These concerns
|
|
# ought to be separated out a lot better.
|
|
|
|
__metaclass__ = abc.ABCMeta
|
|
|
|
def __init__(self, hs):
|
|
"""
|
|
|
|
Args:
|
|
hs (synapse.server.HomeServer):
|
|
"""
|
|
self.hs = hs
|
|
self.store = hs.get_datastore()
|
|
self.auth = hs.get_auth()
|
|
self.state_handler = hs.get_state_handler()
|
|
self.config = hs.config
|
|
|
|
self.federation_handler = hs.get_handlers().federation_handler
|
|
self.directory_handler = hs.get_handlers().directory_handler
|
|
self.identity_handler = hs.get_handlers().identity_handler
|
|
self.registration_handler = hs.get_registration_handler()
|
|
self.profile_handler = hs.get_profile_handler()
|
|
self.event_creation_handler = hs.get_event_creation_handler()
|
|
|
|
self.member_linearizer = Linearizer(name="member")
|
|
|
|
self.clock = hs.get_clock()
|
|
self.spam_checker = hs.get_spam_checker()
|
|
self.third_party_event_rules = hs.get_third_party_event_rules()
|
|
self._server_notices_mxid = self.config.server_notices_mxid
|
|
self._enable_lookup = hs.config.enable_3pid_lookup
|
|
self.allow_per_room_profiles = self.config.allow_per_room_profiles
|
|
|
|
# This is only used to get at ratelimit function, and
|
|
# maybe_kick_guest_users. It's fine there are multiple of these as
|
|
# it doesn't store state.
|
|
self.base_handler = BaseHandler(hs)
|
|
|
|
@abc.abstractmethod
|
|
def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
|
|
"""Try and join a room that this server is not in
|
|
|
|
Args:
|
|
requester (Requester)
|
|
remote_room_hosts (list[str]): List of servers that can be used
|
|
to join via.
|
|
room_id (str): Room that we are trying to join
|
|
user (UserID): User who is trying to join
|
|
content (dict): A dict that should be used as the content of the
|
|
join event.
|
|
|
|
Returns:
|
|
Deferred
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def _remote_reject_invite(self, requester, remote_room_hosts, room_id, target):
|
|
"""Attempt to reject an invite for a room this server is not in. If we
|
|
fail to do so we locally mark the invite as rejected.
|
|
|
|
Args:
|
|
requester (Requester)
|
|
remote_room_hosts (list[str]): List of servers to use to try and
|
|
reject invite
|
|
room_id (str)
|
|
target (UserID): The user rejecting the invite
|
|
|
|
Returns:
|
|
Deferred[dict]: A dictionary to be returned to the client, may
|
|
include event_id etc, or nothing if we locally rejected
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def _user_joined_room(self, target, room_id):
|
|
"""Notifies distributor on master process that the user has joined the
|
|
room.
|
|
|
|
Args:
|
|
target (UserID)
|
|
room_id (str)
|
|
|
|
Returns:
|
|
Deferred|None
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def _user_left_room(self, target, room_id):
|
|
"""Notifies distributor on master process that the user has left the
|
|
room.
|
|
|
|
Args:
|
|
target (UserID)
|
|
room_id (str)
|
|
|
|
Returns:
|
|
Deferred|None
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@defer.inlineCallbacks
|
|
def _local_membership_update(
|
|
self,
|
|
requester,
|
|
target,
|
|
room_id,
|
|
membership,
|
|
prev_events_and_hashes,
|
|
txn_id=None,
|
|
ratelimit=True,
|
|
content=None,
|
|
require_consent=True,
|
|
):
|
|
user_id = target.to_string()
|
|
|
|
if content is None:
|
|
content = {}
|
|
|
|
content["membership"] = membership
|
|
if requester.is_guest:
|
|
content["kind"] = "guest"
|
|
|
|
event, context = yield self.event_creation_handler.create_event(
|
|
requester,
|
|
{
|
|
"type": EventTypes.Member,
|
|
"content": content,
|
|
"room_id": room_id,
|
|
"sender": requester.user.to_string(),
|
|
"state_key": user_id,
|
|
# For backwards compatibility:
|
|
"membership": membership,
|
|
},
|
|
token_id=requester.access_token_id,
|
|
txn_id=txn_id,
|
|
prev_events_and_hashes=prev_events_and_hashes,
|
|
require_consent=require_consent,
|
|
)
|
|
|
|
# Check if this event matches the previous membership event for the user.
|
|
duplicate = yield self.event_creation_handler.deduplicate_state_event(
|
|
event, context
|
|
)
|
|
if duplicate is not None:
|
|
# Discard the new event since this membership change is a no-op.
|
|
return duplicate
|
|
|
|
yield self.event_creation_handler.handle_new_client_event(
|
|
requester, event, context, extra_users=[target], ratelimit=ratelimit
|
|
)
|
|
|
|
prev_state_ids = yield context.get_prev_state_ids(self.store)
|
|
|
|
prev_member_event_id = prev_state_ids.get((EventTypes.Member, user_id), 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, 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, room_id)
|
|
|
|
return event
|
|
|
|
@defer.inlineCallbacks
|
|
def copy_room_tags_and_direct_to_room(self, old_room_id, new_room_id, user_id):
|
|
"""Copies the tags and direct room state from one room to another.
|
|
|
|
Args:
|
|
old_room_id (str)
|
|
new_room_id (str)
|
|
user_id (str)
|
|
|
|
Returns:
|
|
Deferred[None]
|
|
"""
|
|
# Retrieve user account data for predecessor room
|
|
user_account_data, _ = yield self.store.get_account_data_for_user(user_id)
|
|
|
|
# Copy direct message state if applicable
|
|
direct_rooms = user_account_data.get("m.direct", {})
|
|
|
|
# Check which key this room is under
|
|
if isinstance(direct_rooms, dict):
|
|
for key, room_id_list in direct_rooms.items():
|
|
if old_room_id in room_id_list and new_room_id not in room_id_list:
|
|
# Add new room_id to this key
|
|
direct_rooms[key].append(new_room_id)
|
|
|
|
# Save back to user's m.direct account data
|
|
yield self.store.add_account_data_for_user(
|
|
user_id, "m.direct", direct_rooms
|
|
)
|
|
break
|
|
|
|
# Copy room tags if applicable
|
|
room_tags = yield self.store.get_tags_for_room(user_id, old_room_id)
|
|
|
|
# Copy each room tag to the new room
|
|
for tag, tag_content in room_tags.items():
|
|
yield self.store.add_tag_to_room(user_id, new_room_id, tag, tag_content)
|
|
|
|
@defer.inlineCallbacks
|
|
def update_membership(
|
|
self,
|
|
requester,
|
|
target,
|
|
room_id,
|
|
action,
|
|
txn_id=None,
|
|
remote_room_hosts=None,
|
|
third_party_signed=None,
|
|
ratelimit=True,
|
|
content=None,
|
|
require_consent=True,
|
|
):
|
|
key = (room_id,)
|
|
|
|
with (yield self.member_linearizer.queue(key)):
|
|
result = yield self._update_membership(
|
|
requester,
|
|
target,
|
|
room_id,
|
|
action,
|
|
txn_id=txn_id,
|
|
remote_room_hosts=remote_room_hosts,
|
|
third_party_signed=third_party_signed,
|
|
ratelimit=ratelimit,
|
|
content=content,
|
|
require_consent=require_consent,
|
|
)
|
|
|
|
return result
|
|
|
|
@defer.inlineCallbacks
|
|
def _update_membership(
|
|
self,
|
|
requester,
|
|
target,
|
|
room_id,
|
|
action,
|
|
txn_id=None,
|
|
remote_room_hosts=None,
|
|
third_party_signed=None,
|
|
ratelimit=True,
|
|
content=None,
|
|
require_consent=True,
|
|
):
|
|
content_specified = bool(content)
|
|
if content is None:
|
|
content = {}
|
|
else:
|
|
# We do a copy here as we potentially change some keys
|
|
# later on.
|
|
content = dict(content)
|
|
|
|
if not self.allow_per_room_profiles:
|
|
# Strip profile data, knowing that new profile data will be added to the
|
|
# event's content in event_creation_handler.create_event() using the target's
|
|
# global profile.
|
|
content.pop("displayname", None)
|
|
content.pop("avatar_url", None)
|
|
|
|
effective_membership_state = action
|
|
if action in ["kick", "unban"]:
|
|
effective_membership_state = "leave"
|
|
|
|
# if this is a join with a 3pid signature, we may need to turn a 3pid
|
|
# invite into a normal invite before we can handle the join.
|
|
if third_party_signed is not None:
|
|
yield self.federation_handler.exchange_third_party_invite(
|
|
third_party_signed["sender"],
|
|
target.to_string(),
|
|
room_id,
|
|
third_party_signed,
|
|
)
|
|
|
|
if not remote_room_hosts:
|
|
remote_room_hosts = []
|
|
|
|
if effective_membership_state not in ("leave", "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")
|
|
|
|
if effective_membership_state == Membership.INVITE:
|
|
# block any attempts to invite the server notices mxid
|
|
if target.to_string() == self._server_notices_mxid:
|
|
raise SynapseError(http_client.FORBIDDEN, "Cannot invite this user")
|
|
|
|
block_invite = False
|
|
|
|
if (
|
|
self._server_notices_mxid is not None
|
|
and requester.user.to_string() == self._server_notices_mxid
|
|
):
|
|
# allow the server notices mxid to send invites
|
|
is_requester_admin = True
|
|
|
|
else:
|
|
is_requester_admin = yield self.auth.is_server_admin(requester.user)
|
|
|
|
if not is_requester_admin:
|
|
if self.config.block_non_admin_invites:
|
|
logger.info(
|
|
"Blocking invite: user is not admin and non-admin "
|
|
"invites disabled"
|
|
)
|
|
block_invite = True
|
|
|
|
if not self.spam_checker.user_may_invite(
|
|
requester.user.to_string(), target.to_string(), room_id
|
|
):
|
|
logger.info("Blocking invite due to spam checker")
|
|
block_invite = True
|
|
|
|
if block_invite:
|
|
raise SynapseError(403, "Invites have been disabled on this server")
|
|
|
|
prev_events_and_hashes = yield self.store.get_prev_events_for_room(room_id)
|
|
latest_event_ids = (event_id for (event_id, _, _) in prev_events_and_hashes)
|
|
|
|
current_state_ids = yield self.state_handler.get_current_state_ids(
|
|
room_id, latest_event_ids=latest_event_ids
|
|
)
|
|
|
|
# TODO: Refactor into dictionary of explicitly allowed transitions
|
|
# between old and new state, with specific error messages for some
|
|
# transitions and generic otherwise
|
|
old_state_id = current_state_ids.get((EventTypes.Member, target.to_string()))
|
|
if old_state_id:
|
|
old_state = yield self.store.get_event(old_state_id, allow_none=True)
|
|
old_membership = old_state.content.get("membership") if old_state else None
|
|
if action == "unban" and old_membership != "ban":
|
|
raise SynapseError(
|
|
403,
|
|
"Cannot unban user who was not banned"
|
|
" (membership=%s)" % old_membership,
|
|
errcode=Codes.BAD_STATE,
|
|
)
|
|
if old_membership == "ban" and action != "unban":
|
|
raise SynapseError(
|
|
403,
|
|
"Cannot %s user who was banned" % (action,),
|
|
errcode=Codes.BAD_STATE,
|
|
)
|
|
|
|
if old_state:
|
|
same_content = content == old_state.content
|
|
same_membership = old_membership == effective_membership_state
|
|
same_sender = requester.user.to_string() == old_state.sender
|
|
if same_sender and same_membership and same_content:
|
|
return old_state
|
|
|
|
if old_membership in ["ban", "leave"] and action == "kick":
|
|
raise AuthError(403, "The target user is not in the room")
|
|
|
|
# we don't allow people to reject invites to the server notice
|
|
# room, but they can leave it once they are joined.
|
|
if (
|
|
old_membership == Membership.INVITE
|
|
and effective_membership_state == Membership.LEAVE
|
|
):
|
|
is_blocked = yield self._is_server_notice_room(room_id)
|
|
if is_blocked:
|
|
raise SynapseError(
|
|
http_client.FORBIDDEN,
|
|
"You cannot reject this invite",
|
|
errcode=Codes.CANNOT_LEAVE_SERVER_NOTICE_ROOM,
|
|
)
|
|
else:
|
|
if action == "kick":
|
|
raise AuthError(403, "The target user is not in the room")
|
|
|
|
is_host_in_room = yield self._is_host_in_room(current_state_ids)
|
|
|
|
if effective_membership_state == Membership.JOIN:
|
|
if requester.is_guest:
|
|
guest_can_join = yield self._can_guest_join(current_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 not is_host_in_room:
|
|
inviter = yield self._get_inviter(target.to_string(), room_id)
|
|
if inviter and not self.hs.is_mine(inviter):
|
|
remote_room_hosts.append(inviter.domain)
|
|
|
|
content["membership"] = Membership.JOIN
|
|
|
|
profile = self.profile_handler
|
|
if not content_specified:
|
|
content["displayname"] = yield profile.get_displayname(target)
|
|
content["avatar_url"] = yield profile.get_avatar_url(target)
|
|
|
|
if requester.is_guest:
|
|
content["kind"] = "guest"
|
|
|
|
remote_join_response = yield self._remote_join(
|
|
requester, remote_room_hosts, room_id, target, content
|
|
)
|
|
|
|
return remote_join_response
|
|
|
|
elif effective_membership_state == Membership.LEAVE:
|
|
if not is_host_in_room:
|
|
# perhaps we've been invited
|
|
inviter = yield self._get_inviter(target.to_string(), room_id)
|
|
if not inviter:
|
|
raise SynapseError(404, "Not a known room")
|
|
|
|
if self.hs.is_mine(inviter):
|
|
# the inviter was on our server, but has now left. Carry on
|
|
# with the normal rejection codepath.
|
|
#
|
|
# This is a bit of a hack, because the room might still be
|
|
# active on other servers.
|
|
pass
|
|
else:
|
|
# send the rejection to the inviter's HS.
|
|
remote_room_hosts = remote_room_hosts + [inviter.domain]
|
|
res = yield self._remote_reject_invite(
|
|
requester, remote_room_hosts, room_id, target
|
|
)
|
|
return res
|
|
|
|
res = yield self._local_membership_update(
|
|
requester=requester,
|
|
target=target,
|
|
room_id=room_id,
|
|
membership=effective_membership_state,
|
|
txn_id=txn_id,
|
|
ratelimit=ratelimit,
|
|
prev_events_and_hashes=prev_events_and_hashes,
|
|
content=content,
|
|
require_consent=require_consent,
|
|
)
|
|
return res
|
|
|
|
@defer.inlineCallbacks
|
|
def transfer_room_state_on_room_upgrade(self, old_room_id, room_id):
|
|
"""Upon our server becoming aware of an upgraded room, either by upgrading a room
|
|
ourselves or joining one, we can transfer over information from the previous room.
|
|
|
|
Copies user state (tags/push rules) for every local user that was in the old room, as
|
|
well as migrating the room directory state.
|
|
|
|
Args:
|
|
old_room_id (str): The ID of the old room
|
|
|
|
room_id (str): The ID of the new room
|
|
|
|
Returns:
|
|
Deferred
|
|
"""
|
|
# Find all local users that were in the old room and copy over each user's state
|
|
users = yield self.store.get_users_in_room(old_room_id)
|
|
yield self.copy_user_state_on_room_upgrade(old_room_id, room_id, users)
|
|
|
|
# Add new room to the room directory if the old room was there
|
|
# Remove old room from the room directory
|
|
old_room = yield self.store.get_room(old_room_id)
|
|
if old_room and old_room["is_public"]:
|
|
yield self.store.set_room_is_public(old_room_id, False)
|
|
yield self.store.set_room_is_public(room_id, True)
|
|
|
|
@defer.inlineCallbacks
|
|
def copy_user_state_on_room_upgrade(self, old_room_id, new_room_id, user_ids):
|
|
"""Copy user-specific information when they join a new room when that new room is the
|
|
result of a room upgrade
|
|
|
|
Args:
|
|
old_room_id (str): The ID of upgraded room
|
|
new_room_id (str): The ID of the new room
|
|
user_ids (Iterable[str]): User IDs to copy state for
|
|
|
|
Returns:
|
|
Deferred
|
|
"""
|
|
|
|
logger.debug(
|
|
"Copying over room tags and push rules from %s to %s for users %s",
|
|
old_room_id,
|
|
new_room_id,
|
|
user_ids,
|
|
)
|
|
|
|
for user_id in user_ids:
|
|
try:
|
|
# It is an upgraded room. Copy over old tags
|
|
yield self.copy_room_tags_and_direct_to_room(
|
|
old_room_id, new_room_id, user_id
|
|
)
|
|
# Copy over push rules
|
|
yield self.store.copy_push_rules_from_room_to_room_for_user(
|
|
old_room_id, new_room_id, user_id
|
|
)
|
|
except Exception:
|
|
logger.exception(
|
|
"Error copying tags and/or push rules from rooms %s to %s for user %s. "
|
|
"Skipping...",
|
|
old_room_id,
|
|
new_room_id,
|
|
user_id,
|
|
)
|
|
continue
|
|
|
|
@defer.inlineCallbacks
|
|
def send_membership_event(self, requester, event, context, ratelimit=True):
|
|
"""
|
|
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)
|