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![Patrick Cloke](/assets/img/avatar_default.png)
This converts the media servlet URLs in the same way as (most) of the rest of Synapse. This will give more flexibility in the versions each endpoint exists under.
88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2020-2021 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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import re
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from typing import TYPE_CHECKING, Optional
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from synapse.http.server import set_corp_headers, set_cors_headers
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from synapse.http.servlet import RestServlet, parse_boolean
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from synapse.http.site import SynapseRequest
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from synapse.media._base import respond_404
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from synapse.util.stringutils import parse_and_validate_server_name
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if TYPE_CHECKING:
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from synapse.media.media_repository import MediaRepository
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class DownloadResource(RestServlet):
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PATTERNS = [
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re.compile(
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"/_matrix/media/(r0|v3|v1)/download/(?P<server_name>[^/]*)/(?P<media_id>[^/]*)(/(?P<file_name>[^/]*))?$"
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)
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]
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def __init__(self, hs: "HomeServer", media_repo: "MediaRepository"):
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super().__init__()
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self.media_repo = media_repo
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self._is_mine_server_name = hs.is_mine_server_name
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async def on_GET(
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self,
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request: SynapseRequest,
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server_name: str,
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media_id: str,
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file_name: Optional[str] = None,
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) -> None:
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# Validate the server name, raising if invalid
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parse_and_validate_server_name(server_name)
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set_cors_headers(request)
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set_corp_headers(request)
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request.setHeader(
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b"Content-Security-Policy",
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b"sandbox;"
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b" default-src 'none';"
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b" script-src 'none';"
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b" plugin-types application/pdf;"
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b" style-src 'unsafe-inline';"
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b" media-src 'self';"
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b" object-src 'self';",
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)
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# Limited non-standard form of CSP for IE11
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request.setHeader(b"X-Content-Security-Policy", b"sandbox;")
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request.setHeader(
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b"Referrer-Policy",
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b"no-referrer",
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)
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if self._is_mine_server_name(server_name):
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await self.media_repo.get_local_media(request, media_id, file_name)
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else:
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allow_remote = parse_boolean(request, "allow_remote", default=True)
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if not allow_remote:
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logger.info(
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"Rejecting request for remote media %s/%s due to allow_remote",
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server_name,
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media_id,
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)
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respond_404(request)
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return
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await self.media_repo.get_remote_media(
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request, server_name, media_id, file_name
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)
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