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a0bc9d387e
This also pins the Twisted version in the mypy job for CI until proper type hints are fixed throughout Synapse.
72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# 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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from typing import TYPE_CHECKING
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from twisted.web.server import Request
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from synapse.http.server import DirectServeJsonResource, set_cors_headers
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from synapse.http.servlet import parse_boolean
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from ._base import parse_media_id, respond_404
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if TYPE_CHECKING:
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from synapse.app.homeserver import HomeServer
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from synapse.rest.media.v1.media_repository import MediaRepository
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logger = logging.getLogger(__name__)
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class DownloadResource(DirectServeJsonResource):
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isLeaf = True
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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.server_name = hs.hostname
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async def _async_render_GET(self, request: Request) -> None:
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set_cors_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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request.setHeader(
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b"Referrer-Policy",
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b"no-referrer",
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)
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server_name, media_id, name = parse_media_id(request)
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if server_name == self.server_name:
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await self.media_repo.get_local_media(request, media_id, 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(request, server_name, media_id, name)
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