synapse-product/synapse/rest/admin/media.py
Patrick Cloke 3e4cdfe5d9
Add an admin API endpoint to protect media. ()
Protecting media stops it from being quarantined when
e.g. all media in a room is quarantined. This is useful
for sticker packs and other media that is uploaded by
server administrators, but used by many people.
2021-01-15 11:18:09 -05:00

270 lines
9.0 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018-2019 New Vector Ltd
#
# 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 logging
from typing import TYPE_CHECKING, Tuple
from twisted.web.http import Request
from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
from synapse.http.servlet import RestServlet, parse_boolean, parse_integer
from synapse.rest.admin._base import (
admin_patterns,
assert_requester_is_admin,
assert_user_is_admin,
)
from synapse.types import JsonDict
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
class QuarantineMediaInRoom(RestServlet):
"""Quarantines all media in a room so that no one can download it via
this server.
"""
PATTERNS = (
admin_patterns("/room/(?P<room_id>[^/]+)/media/quarantine")
+
# This path kept around for legacy reasons
admin_patterns("/quarantine_media/(?P<room_id>[^/]+)")
)
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
async def on_POST(self, request: Request, room_id: str) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
await assert_user_is_admin(self.auth, requester.user)
logging.info("Quarantining room: %s", room_id)
# Quarantine all media in this room
num_quarantined = await self.store.quarantine_media_ids_in_room(
room_id, requester.user.to_string()
)
return 200, {"num_quarantined": num_quarantined}
class QuarantineMediaByUser(RestServlet):
"""Quarantines all local media by a given user so that no one can download it via
this server.
"""
PATTERNS = admin_patterns("/user/(?P<user_id>[^/]+)/media/quarantine")
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
async def on_POST(self, request: Request, user_id: str) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
await assert_user_is_admin(self.auth, requester.user)
logging.info("Quarantining local media by user: %s", user_id)
# Quarantine all media this user has uploaded
num_quarantined = await self.store.quarantine_media_ids_by_user(
user_id, requester.user.to_string()
)
return 200, {"num_quarantined": num_quarantined}
class QuarantineMediaByID(RestServlet):
"""Quarantines local or remote media by a given ID so that no one can download
it via this server.
"""
PATTERNS = admin_patterns(
"/media/quarantine/(?P<server_name>[^/]+)/(?P<media_id>[^/]+)"
)
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
async def on_POST(
self, request: Request, server_name: str, media_id: str
) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
await assert_user_is_admin(self.auth, requester.user)
logging.info("Quarantining local media by ID: %s/%s", server_name, media_id)
# Quarantine this media id
await self.store.quarantine_media_by_id(
server_name, media_id, requester.user.to_string()
)
return 200, {}
class ProtectMediaByID(RestServlet):
"""Protect local media from being quarantined.
"""
PATTERNS = admin_patterns("/media/protect/(?P<media_id>[^/]+)")
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
async def on_POST(self, request: Request, media_id: str) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
await assert_user_is_admin(self.auth, requester.user)
logging.info("Protecting local media by ID: %s", media_id)
# Quarantine this media id
await self.store.mark_local_media_as_safe(media_id)
return 200, {}
class ListMediaInRoom(RestServlet):
"""Lists all of the media in a given room.
"""
PATTERNS = admin_patterns("/room/(?P<room_id>[^/]+)/media")
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
async def on_GET(self, request: Request, room_id: str) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
is_admin = await self.auth.is_server_admin(requester.user)
if not is_admin:
raise AuthError(403, "You are not a server admin")
local_mxcs, remote_mxcs = await self.store.get_media_mxcs_in_room(room_id)
return 200, {"local": local_mxcs, "remote": remote_mxcs}
class PurgeMediaCacheRestServlet(RestServlet):
PATTERNS = admin_patterns("/purge_media_cache")
def __init__(self, hs: "HomeServer"):
self.media_repository = hs.get_media_repository()
self.auth = hs.get_auth()
async def on_POST(self, request: Request) -> Tuple[int, JsonDict]:
await assert_requester_is_admin(self.auth, request)
before_ts = parse_integer(request, "before_ts", required=True)
logger.info("before_ts: %r", before_ts)
ret = await self.media_repository.delete_old_remote_media(before_ts)
return 200, ret
class DeleteMediaByID(RestServlet):
"""Delete local media by a given ID. Removes it from this server.
"""
PATTERNS = admin_patterns("/media/(?P<server_name>[^/]+)/(?P<media_id>[^/]+)")
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
self.server_name = hs.hostname
self.media_repository = hs.get_media_repository()
async def on_DELETE(
self, request: Request, server_name: str, media_id: str
) -> Tuple[int, JsonDict]:
await assert_requester_is_admin(self.auth, request)
if self.server_name != server_name:
raise SynapseError(400, "Can only delete local media")
if await self.store.get_local_media(media_id) is None:
raise NotFoundError("Unknown media")
logging.info("Deleting local media by ID: %s", media_id)
deleted_media, total = await self.media_repository.delete_local_media(media_id)
return 200, {"deleted_media": deleted_media, "total": total}
class DeleteMediaByDateSize(RestServlet):
"""Delete local media and local copies of remote media by
timestamp and size.
"""
PATTERNS = admin_patterns("/media/(?P<server_name>[^/]+)/delete")
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastore()
self.auth = hs.get_auth()
self.server_name = hs.hostname
self.media_repository = hs.get_media_repository()
async def on_POST(self, request: Request, server_name: str) -> Tuple[int, JsonDict]:
await assert_requester_is_admin(self.auth, request)
before_ts = parse_integer(request, "before_ts", required=True)
size_gt = parse_integer(request, "size_gt", default=0)
keep_profiles = parse_boolean(request, "keep_profiles", default=True)
if before_ts < 0:
raise SynapseError(
400,
"Query parameter before_ts must be a string representing a positive integer.",
errcode=Codes.INVALID_PARAM,
)
if size_gt < 0:
raise SynapseError(
400,
"Query parameter size_gt must be a string representing a positive integer.",
errcode=Codes.INVALID_PARAM,
)
if self.server_name != server_name:
raise SynapseError(400, "Can only delete local media")
logging.info(
"Deleting local media by timestamp: %s, size larger than: %s, keep profile media: %s"
% (before_ts, size_gt, keep_profiles)
)
deleted_media, total = await self.media_repository.delete_old_local_media(
before_ts, size_gt, keep_profiles
)
return 200, {"deleted_media": deleted_media, "total": total}
def register_servlets_for_media_repo(hs: "HomeServer", http_server):
"""
Media repo specific APIs.
"""
PurgeMediaCacheRestServlet(hs).register(http_server)
QuarantineMediaInRoom(hs).register(http_server)
QuarantineMediaByID(hs).register(http_server)
QuarantineMediaByUser(hs).register(http_server)
ProtectMediaByID(hs).register(http_server)
ListMediaInRoom(hs).register(http_server)
DeleteMediaByID(hs).register(http_server)
DeleteMediaByDateSize(hs).register(http_server)