mirror of
https://github.com/element-hq/synapse
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125 lines
4.6 KiB
Python
125 lines
4.6 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2020-2021 The Matrix.org Foundation C.I.C.
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# Copyright 2014-2016 OpenMarket Ltd
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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import logging
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import re
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from typing import TYPE_CHECKING
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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_integer, parse_string
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from synapse.http.site import SynapseRequest
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from synapse.media._base import (
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DEFAULT_MAX_TIMEOUT_MS,
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MAXIMUM_ALLOWED_MAX_TIMEOUT_MS,
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respond_404,
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)
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from synapse.media.media_storage import MediaStorage
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from synapse.media.thumbnailer import ThumbnailProvider
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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 ThumbnailResource(RestServlet):
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PATTERNS = [
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re.compile(
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"/_matrix/media/(r0|v3|v1)/thumbnail/(?P<server_name>[^/]*)/(?P<media_id>[^/]*)$"
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)
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]
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def __init__(
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self,
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hs: "HomeServer",
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media_repo: "MediaRepository",
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media_storage: MediaStorage,
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):
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super().__init__()
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self.store = hs.get_datastores().main
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self.media_repo = media_repo
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self.media_storage = media_storage
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self._is_mine_server_name = hs.is_mine_server_name
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self._server_name = hs.hostname
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self.prevent_media_downloads_from = hs.config.media.prevent_media_downloads_from
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self.dynamic_thumbnails = hs.config.media.dynamic_thumbnails
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self.thumbnail_provider = ThumbnailProvider(hs, media_repo, media_storage)
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async def on_GET(
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self, request: SynapseRequest, server_name: str, media_id: str
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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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width = parse_integer(request, "width", required=True)
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height = parse_integer(request, "height", required=True)
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method = parse_string(request, "method", "scale")
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# TODO Parse the Accept header to get an prioritised list of thumbnail types.
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m_type = "image/png"
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max_timeout_ms = parse_integer(
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request, "timeout_ms", default=DEFAULT_MAX_TIMEOUT_MS
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)
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max_timeout_ms = min(max_timeout_ms, MAXIMUM_ALLOWED_MAX_TIMEOUT_MS)
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if self._is_mine_server_name(server_name):
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if self.dynamic_thumbnails:
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await self.thumbnail_provider.select_or_generate_local_thumbnail(
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request, media_id, width, height, method, m_type, max_timeout_ms
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)
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else:
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await self.thumbnail_provider.respond_local_thumbnail(
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request, media_id, width, height, method, m_type, max_timeout_ms
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)
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self.media_repo.mark_recently_accessed(None, media_id)
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else:
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# Don't let users download media from configured domains, even if it
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# is already downloaded. This is Trust & Safety tooling to make some
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# media inaccessible to local users.
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# See `prevent_media_downloads_from` config docs for more info.
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if server_name in self.prevent_media_downloads_from:
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respond_404(request)
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return
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ip_address = request.getClientAddress().host
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remote_resp_function = (
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self.thumbnail_provider.select_or_generate_remote_thumbnail
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if self.dynamic_thumbnails
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else self.thumbnail_provider.respond_remote_thumbnail
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)
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await remote_resp_function(
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request,
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server_name,
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media_id,
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width,
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height,
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method,
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m_type,
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max_timeout_ms,
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ip_address,
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)
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self.media_repo.mark_recently_accessed(server_name, media_id)
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