692 lines
24 KiB
Python
692 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019-2021 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 logging
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from http import HTTPStatus
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from typing import TYPE_CHECKING, List, Optional, Tuple
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from urllib import parse as urlparse
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from synapse.api.constants import EventTypes, JoinRules, Membership
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from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
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from synapse.api.filtering import Filter
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from synapse.http.servlet import (
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RestServlet,
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assert_params_in_dict,
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parse_integer,
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parse_json_object_from_request,
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parse_string,
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)
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from synapse.http.site import SynapseRequest
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from synapse.rest.admin._base import (
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admin_patterns,
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assert_requester_is_admin,
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assert_user_is_admin,
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)
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from synapse.storage.databases.main.room import RoomSortOrder
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from synapse.types import JsonDict, RoomAlias, RoomID, UserID, create_requester
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from synapse.util import json_decoder
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class ResolveRoomIdMixin:
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def __init__(self, hs: "HomeServer"):
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self.room_member_handler = hs.get_room_member_handler()
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async def resolve_room_id(
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self, room_identifier: str, remote_room_hosts: Optional[List[str]] = None
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) -> Tuple[str, Optional[List[str]]]:
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"""
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Resolve a room identifier to a room ID, if necessary.
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This also performanes checks to ensure the room ID is of the proper form.
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Args:
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room_identifier: The room ID or alias.
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remote_room_hosts: The potential remote room hosts to use.
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Returns:
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The resolved room ID.
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Raises:
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SynapseError if the room ID is of the wrong form.
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"""
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if RoomID.is_valid(room_identifier):
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resolved_room_id = room_identifier
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elif RoomAlias.is_valid(room_identifier):
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room_alias = RoomAlias.from_string(room_identifier)
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(
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room_id,
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remote_room_hosts,
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) = await self.room_member_handler.lookup_room_alias(room_alias)
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resolved_room_id = room_id.to_string()
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else:
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raise SynapseError(
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400, "%s was not legal room ID or room alias" % (room_identifier,)
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)
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if not resolved_room_id:
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raise SynapseError(
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400, "Unknown room ID or room alias %s" % room_identifier
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)
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return resolved_room_id, remote_room_hosts
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class ShutdownRoomRestServlet(RestServlet):
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"""Shuts down a room by removing all local users from the room and blocking
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all future invites and joins to the room. Any local aliases will be repointed
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to a new room created by `new_room_user_id` and kicked users will be auto
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joined to the new room.
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"""
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PATTERNS = admin_patterns("/shutdown_room/(?P<room_id>[^/]+)")
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def __init__(self, hs: "HomeServer"):
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self.hs = hs
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self.auth = hs.get_auth()
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self.room_shutdown_handler = hs.get_room_shutdown_handler()
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async def on_POST(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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content = parse_json_object_from_request(request)
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assert_params_in_dict(content, ["new_room_user_id"])
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ret = await self.room_shutdown_handler.shutdown_room(
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room_id=room_id,
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new_room_user_id=content["new_room_user_id"],
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new_room_name=content.get("room_name"),
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message=content.get("message"),
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requester_user_id=requester.user.to_string(),
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block=True,
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)
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return (200, ret)
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class DeleteRoomRestServlet(RestServlet):
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"""Delete a room from server.
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It is a combination and improvement of shutdown and purge room.
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Shuts down a room by removing all local users from the room.
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Blocking all future invites and joins to the room is optional.
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If desired any local aliases will be repointed to a new room
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created by `new_room_user_id` and kicked users will be auto-
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joined to the new room.
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If 'purge' is true, it will remove all traces of a room from the database.
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"""
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PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]+)/delete$")
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def __init__(self, hs: "HomeServer"):
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self.hs = hs
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self.auth = hs.get_auth()
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self.room_shutdown_handler = hs.get_room_shutdown_handler()
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self.pagination_handler = hs.get_pagination_handler()
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async def on_POST(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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content = parse_json_object_from_request(request)
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block = content.get("block", False)
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if not isinstance(block, bool):
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raise SynapseError(
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HTTPStatus.BAD_REQUEST,
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"Param 'block' must be a boolean, if given",
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Codes.BAD_JSON,
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)
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purge = content.get("purge", True)
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if not isinstance(purge, bool):
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raise SynapseError(
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HTTPStatus.BAD_REQUEST,
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"Param 'purge' must be a boolean, if given",
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Codes.BAD_JSON,
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)
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force_purge = content.get("force_purge", False)
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if not isinstance(force_purge, bool):
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raise SynapseError(
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HTTPStatus.BAD_REQUEST,
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"Param 'force_purge' must be a boolean, if given",
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Codes.BAD_JSON,
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)
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ret = await self.room_shutdown_handler.shutdown_room(
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room_id=room_id,
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new_room_user_id=content.get("new_room_user_id"),
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new_room_name=content.get("room_name"),
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message=content.get("message"),
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requester_user_id=requester.user.to_string(),
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block=block,
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)
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# Purge room
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if purge:
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await self.pagination_handler.purge_room(room_id, force=force_purge)
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return (200, ret)
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class ListRoomRestServlet(RestServlet):
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"""
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List all rooms that are known to the homeserver. Results are returned
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in a dictionary containing room information. Supports pagination.
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"""
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PATTERNS = admin_patterns("/rooms$")
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def __init__(self, hs: "HomeServer"):
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self.store = hs.get_datastore()
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self.auth = hs.get_auth()
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self.admin_handler = hs.get_admin_handler()
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async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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# Extract query parameters
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start = parse_integer(request, "from", default=0)
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limit = parse_integer(request, "limit", default=100)
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order_by = parse_string(request, "order_by", default=RoomSortOrder.NAME.value)
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if order_by not in (
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RoomSortOrder.ALPHABETICAL.value,
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RoomSortOrder.SIZE.value,
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RoomSortOrder.NAME.value,
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RoomSortOrder.CANONICAL_ALIAS.value,
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RoomSortOrder.JOINED_MEMBERS.value,
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RoomSortOrder.JOINED_LOCAL_MEMBERS.value,
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RoomSortOrder.VERSION.value,
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RoomSortOrder.CREATOR.value,
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RoomSortOrder.ENCRYPTION.value,
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RoomSortOrder.FEDERATABLE.value,
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RoomSortOrder.PUBLIC.value,
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RoomSortOrder.JOIN_RULES.value,
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RoomSortOrder.GUEST_ACCESS.value,
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RoomSortOrder.HISTORY_VISIBILITY.value,
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RoomSortOrder.STATE_EVENTS.value,
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):
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raise SynapseError(
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400,
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"Unknown value for order_by: %s" % (order_by,),
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errcode=Codes.INVALID_PARAM,
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)
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search_term = parse_string(request, "search_term")
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if search_term == "":
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raise SynapseError(
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400,
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"search_term cannot be an empty string",
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errcode=Codes.INVALID_PARAM,
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)
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direction = parse_string(request, "dir", default="f")
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if direction not in ("f", "b"):
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raise SynapseError(
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400, "Unknown direction: %s" % (direction,), errcode=Codes.INVALID_PARAM
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)
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reverse_order = True if direction == "b" else False
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# Return list of rooms according to parameters
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rooms, total_rooms = await self.store.get_rooms_paginate(
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start, limit, order_by, reverse_order, search_term
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)
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response = {
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# next_token should be opaque, so return a value the client can parse
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"offset": start,
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"rooms": rooms,
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"total_rooms": total_rooms,
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}
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# Are there more rooms to paginate through after this?
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if (start + limit) < total_rooms:
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# There are. Calculate where the query should start from next time
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# to get the next part of the list
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response["next_batch"] = start + limit
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# Is it possible to paginate backwards? Check if we currently have an
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# offset
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if start > 0:
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if start > limit:
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# Going back one iteration won't take us to the start.
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# Calculate new offset
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response["prev_batch"] = start - limit
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else:
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response["prev_batch"] = 0
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return 200, response
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class RoomRestServlet(RestServlet):
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"""Get room details.
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TODO: Add on_POST to allow room creation without joining the room
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"""
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PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]+)$")
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def __init__(self, hs: "HomeServer"):
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self.hs = hs
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self.auth = hs.get_auth()
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self.store = hs.get_datastore()
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async def on_GET(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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await assert_requester_is_admin(self.auth, request)
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ret = await self.store.get_room_with_stats(room_id)
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if not ret:
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raise NotFoundError("Room not found")
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members = await self.store.get_users_in_room(room_id)
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ret["joined_local_devices"] = await self.store.count_devices_by_users(members)
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return (200, ret)
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class RoomMembersRestServlet(RestServlet):
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"""
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Get members list of a room.
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"""
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PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]+)/members")
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def __init__(self, hs: "HomeServer"):
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self.hs = hs
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self.auth = hs.get_auth()
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self.store = hs.get_datastore()
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async def on_GET(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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await assert_requester_is_admin(self.auth, request)
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ret = await self.store.get_room(room_id)
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if not ret:
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raise NotFoundError("Room not found")
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members = await self.store.get_users_in_room(room_id)
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ret = {"members": members, "total": len(members)}
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return 200, ret
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class RoomStateRestServlet(RestServlet):
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"""
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Get full state within a room.
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"""
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PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]+)/state")
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def __init__(self, hs: "HomeServer"):
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self.hs = hs
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self.auth = hs.get_auth()
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self.store = hs.get_datastore()
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self.clock = hs.get_clock()
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self._event_serializer = hs.get_event_client_serializer()
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async def on_GET(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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ret = await self.store.get_room(room_id)
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if not ret:
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raise NotFoundError("Room not found")
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event_ids = await self.store.get_current_state_ids(room_id)
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events = await self.store.get_events(event_ids.values())
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now = self.clock.time_msec()
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room_state = await self._event_serializer.serialize_events(
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events.values(),
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now,
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# We don't bother bundling aggregations in when asked for state
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# events, as clients won't use them.
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bundle_aggregations=False,
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)
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ret = {"state": room_state}
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return 200, ret
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class JoinRoomAliasServlet(ResolveRoomIdMixin, RestServlet):
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PATTERNS = admin_patterns("/join/(?P<room_identifier>[^/]*)")
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def __init__(self, hs: "HomeServer"):
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super().__init__(hs)
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self.hs = hs
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self.auth = hs.get_auth()
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self.admin_handler = hs.get_admin_handler()
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self.state_handler = hs.get_state_handler()
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async def on_POST(
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self, request: SynapseRequest, room_identifier: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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content = parse_json_object_from_request(request)
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assert_params_in_dict(content, ["user_id"])
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target_user = UserID.from_string(content["user_id"])
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if not self.hs.is_mine(target_user):
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raise SynapseError(400, "This endpoint can only be used with local users")
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if not await self.admin_handler.get_user(target_user):
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raise NotFoundError("User not found")
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# Get the room ID from the identifier.
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try:
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remote_room_hosts = [
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x.decode("ascii") for x in request.args[b"server_name"]
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] # type: Optional[List[str]]
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except Exception:
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remote_room_hosts = None
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room_id, remote_room_hosts = await self.resolve_room_id(
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room_identifier, remote_room_hosts
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)
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fake_requester = create_requester(
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target_user, authenticated_entity=requester.authenticated_entity
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)
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# send invite if room has "JoinRules.INVITE"
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room_state = await self.state_handler.get_current_state(room_id)
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join_rules_event = room_state.get((EventTypes.JoinRules, ""))
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if join_rules_event:
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if not (join_rules_event.content.get("join_rule") == JoinRules.PUBLIC):
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# update_membership with an action of "invite" can raise a
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# ShadowBanError. This is not handled since it is assumed that
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# an admin isn't going to call this API with a shadow-banned user.
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await self.room_member_handler.update_membership(
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requester=requester,
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target=fake_requester.user,
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room_id=room_id,
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action="invite",
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remote_room_hosts=remote_room_hosts,
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ratelimit=False,
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)
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await self.room_member_handler.update_membership(
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requester=fake_requester,
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target=fake_requester.user,
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room_id=room_id,
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action="join",
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remote_room_hosts=remote_room_hosts,
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ratelimit=False,
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)
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return 200, {"room_id": room_id}
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class MakeRoomAdminRestServlet(ResolveRoomIdMixin, RestServlet):
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"""Allows a server admin to get power in a room if a local user has power in
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a room. Will also invite the user if they're not in the room and it's a
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private room. Can specify another user (rather than the admin user) to be
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granted power, e.g.:
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POST/_synapse/admin/v1/rooms/<room_id_or_alias>/make_room_admin
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{
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"user_id": "@foo:example.com"
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}
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"""
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PATTERNS = admin_patterns("/rooms/(?P<room_identifier>[^/]*)/make_room_admin")
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def __init__(self, hs: "HomeServer"):
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super().__init__(hs)
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self.hs = hs
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self.auth = hs.get_auth()
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self.event_creation_handler = hs.get_event_creation_handler()
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self.state_handler = hs.get_state_handler()
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self.is_mine_id = hs.is_mine_id
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async def on_POST(
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self, request: SynapseRequest, room_identifier: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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await assert_user_is_admin(self.auth, requester.user)
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content = parse_json_object_from_request(request, allow_empty_body=True)
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room_id, _ = await self.resolve_room_id(room_identifier)
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# Which user to grant room admin rights to.
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user_to_add = content.get("user_id", requester.user.to_string())
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# Figure out which local users currently have power in the room, if any.
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room_state = await self.state_handler.get_current_state(room_id)
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if not room_state:
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raise SynapseError(400, "Server not in room")
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create_event = room_state[(EventTypes.Create, "")]
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power_levels = room_state.get((EventTypes.PowerLevels, ""))
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if power_levels is not None:
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# We pick the local user with the highest power.
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user_power = power_levels.content.get("users", {})
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admin_users = [
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user_id for user_id in user_power if self.is_mine_id(user_id)
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]
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admin_users.sort(key=lambda user: user_power[user])
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if not admin_users:
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raise SynapseError(400, "No local admin user in room")
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admin_user_id = None
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|
|
|
for admin_user in reversed(admin_users):
|
|
if room_state.get((EventTypes.Member, admin_user)):
|
|
admin_user_id = admin_user
|
|
break
|
|
|
|
if not admin_user_id:
|
|
raise SynapseError(
|
|
400,
|
|
"No local admin user in room",
|
|
)
|
|
|
|
pl_content = power_levels.content
|
|
else:
|
|
# If there is no power level events then the creator has rights.
|
|
pl_content = {}
|
|
admin_user_id = create_event.sender
|
|
if not self.is_mine_id(admin_user_id):
|
|
raise SynapseError(
|
|
400,
|
|
"No local admin user in room",
|
|
)
|
|
|
|
# Grant the user power equal to the room admin by attempting to send an
|
|
# updated power level event.
|
|
new_pl_content = dict(pl_content)
|
|
new_pl_content["users"] = dict(pl_content.get("users", {}))
|
|
new_pl_content["users"][user_to_add] = new_pl_content["users"][admin_user_id]
|
|
|
|
fake_requester = create_requester(
|
|
admin_user_id,
|
|
authenticated_entity=requester.authenticated_entity,
|
|
)
|
|
|
|
try:
|
|
await self.event_creation_handler.create_and_send_nonmember_event(
|
|
fake_requester,
|
|
event_dict={
|
|
"content": new_pl_content,
|
|
"sender": admin_user_id,
|
|
"type": EventTypes.PowerLevels,
|
|
"state_key": "",
|
|
"room_id": room_id,
|
|
},
|
|
)
|
|
except AuthError:
|
|
# The admin user we found turned out not to have enough power.
|
|
raise SynapseError(
|
|
400, "No local admin user in room with power to update power levels."
|
|
)
|
|
|
|
# Now we check if the user we're granting admin rights to is already in
|
|
# the room. If not and it's not a public room we invite them.
|
|
member_event = room_state.get((EventTypes.Member, user_to_add))
|
|
is_joined = False
|
|
if member_event:
|
|
is_joined = member_event.content["membership"] in (
|
|
Membership.JOIN,
|
|
Membership.INVITE,
|
|
)
|
|
|
|
if is_joined:
|
|
return 200, {}
|
|
|
|
join_rules = room_state.get((EventTypes.JoinRules, ""))
|
|
is_public = False
|
|
if join_rules:
|
|
is_public = join_rules.content.get("join_rule") == JoinRules.PUBLIC
|
|
|
|
if is_public:
|
|
return 200, {}
|
|
|
|
await self.room_member_handler.update_membership(
|
|
fake_requester,
|
|
target=UserID.from_string(user_to_add),
|
|
room_id=room_id,
|
|
action=Membership.INVITE,
|
|
)
|
|
|
|
return 200, {}
|
|
|
|
|
|
class ForwardExtremitiesRestServlet(ResolveRoomIdMixin, RestServlet):
|
|
"""Allows a server admin to get or clear forward extremities.
|
|
|
|
Clearing does not require restarting the server.
|
|
|
|
Clear forward extremities:
|
|
DELETE /_synapse/admin/v1/rooms/<room_id_or_alias>/forward_extremities
|
|
|
|
Get forward_extremities:
|
|
GET /_synapse/admin/v1/rooms/<room_id_or_alias>/forward_extremities
|
|
"""
|
|
|
|
PATTERNS = admin_patterns("/rooms/(?P<room_identifier>[^/]*)/forward_extremities")
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__(hs)
|
|
self.hs = hs
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastore()
|
|
|
|
async def on_DELETE(
|
|
self, request: SynapseRequest, room_identifier: str
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request)
|
|
await assert_user_is_admin(self.auth, requester.user)
|
|
|
|
room_id, _ = await self.resolve_room_id(room_identifier)
|
|
|
|
deleted_count = await self.store.delete_forward_extremities_for_room(room_id)
|
|
return 200, {"deleted": deleted_count}
|
|
|
|
async def on_GET(
|
|
self, request: SynapseRequest, room_identifier: str
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request)
|
|
await assert_user_is_admin(self.auth, requester.user)
|
|
|
|
room_id, _ = await self.resolve_room_id(room_identifier)
|
|
|
|
extremities = await self.store.get_forward_extremities_for_room(room_id)
|
|
return 200, {"count": len(extremities), "results": extremities}
|
|
|
|
|
|
class RoomEventContextServlet(RestServlet):
|
|
"""
|
|
Provide the context for an event.
|
|
This API is designed to be used when system administrators wish to look at
|
|
an abuse report and understand what happened during and immediately prior
|
|
to this event.
|
|
"""
|
|
|
|
PATTERNS = admin_patterns("/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$")
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.clock = hs.get_clock()
|
|
self.room_context_handler = hs.get_room_context_handler()
|
|
self._event_serializer = hs.get_event_client_serializer()
|
|
self.auth = hs.get_auth()
|
|
|
|
async def on_GET(
|
|
self, request: SynapseRequest, room_id: str, event_id: str
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request, allow_guest=False)
|
|
await assert_user_is_admin(self.auth, requester.user)
|
|
|
|
limit = parse_integer(request, "limit", default=10)
|
|
|
|
# picking the API shape for symmetry with /messages
|
|
filter_str = parse_string(request, b"filter", encoding="utf-8")
|
|
if filter_str:
|
|
filter_json = urlparse.unquote(filter_str)
|
|
event_filter = Filter(
|
|
json_decoder.decode(filter_json)
|
|
) # type: Optional[Filter]
|
|
else:
|
|
event_filter = None
|
|
|
|
results = await self.room_context_handler.get_event_context(
|
|
requester,
|
|
room_id,
|
|
event_id,
|
|
limit,
|
|
event_filter,
|
|
use_admin_priviledge=True,
|
|
)
|
|
|
|
if not results:
|
|
raise SynapseError(404, "Event not found.", errcode=Codes.NOT_FOUND)
|
|
|
|
time_now = self.clock.time_msec()
|
|
results["events_before"] = await self._event_serializer.serialize_events(
|
|
results["events_before"], time_now
|
|
)
|
|
results["event"] = await self._event_serializer.serialize_event(
|
|
results["event"], time_now
|
|
)
|
|
results["events_after"] = await self._event_serializer.serialize_events(
|
|
results["events_after"], time_now
|
|
)
|
|
results["state"] = await self._event_serializer.serialize_events(
|
|
results["state"], time_now
|
|
)
|
|
|
|
return 200, results
|