71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
# Copyright 2020-2021 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 logging
|
|
from typing import TYPE_CHECKING
|
|
|
|
from twisted.web.http import Request
|
|
|
|
from synapse.http.server import DirectServeJsonResource, set_cors_headers
|
|
from synapse.http.servlet import parse_boolean
|
|
|
|
from ._base import parse_media_id, respond_404
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.app.homeserver import HomeServer
|
|
from synapse.rest.media.v1.media_repository import MediaRepository
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class DownloadResource(DirectServeJsonResource):
|
|
isLeaf = True
|
|
|
|
def __init__(self, hs: "HomeServer", media_repo: "MediaRepository"):
|
|
super().__init__()
|
|
self.media_repo = media_repo
|
|
self.server_name = hs.hostname
|
|
|
|
async def _async_render_GET(self, request: Request) -> None:
|
|
set_cors_headers(request)
|
|
request.setHeader(
|
|
b"Content-Security-Policy",
|
|
b"sandbox;"
|
|
b" default-src 'none';"
|
|
b" script-src 'none';"
|
|
b" plugin-types application/pdf;"
|
|
b" style-src 'unsafe-inline';"
|
|
b" media-src 'self';"
|
|
b" object-src 'self';",
|
|
)
|
|
request.setHeader(
|
|
b"Referrer-Policy", b"no-referrer",
|
|
)
|
|
server_name, media_id, name = parse_media_id(request)
|
|
if server_name == self.server_name:
|
|
await self.media_repo.get_local_media(request, media_id, name)
|
|
else:
|
|
allow_remote = parse_boolean(request, "allow_remote", default=True)
|
|
if not allow_remote:
|
|
logger.info(
|
|
"Rejecting request for remote media %s/%s due to allow_remote",
|
|
server_name,
|
|
media_id,
|
|
)
|
|
respond_404(request)
|
|
return
|
|
|
|
await self.media_repo.get_remote_media(request, server_name, media_id, name)
|