111 lines
3.4 KiB
Python
111 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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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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from synapse.http.server import respond_with_json, finish_request
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from synapse.api.errors import (
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cs_error, Codes, SynapseError
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)
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from twisted.internet import defer
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from twisted.protocols.basic import FileSender
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from synapse.util.stringutils import is_ascii
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import os
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import logging
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import urllib
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import urlparse
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logger = logging.getLogger(__name__)
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def parse_media_id(request):
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try:
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# This allows users to append e.g. /test.png to the URL. Useful for
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# clients that parse the URL to see content type.
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server_name, media_id = request.postpath[:2]
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file_name = None
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if len(request.postpath) > 2:
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try:
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file_name = urlparse.unquote(request.postpath[-1]).decode("utf-8")
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except UnicodeDecodeError:
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pass
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return server_name, media_id, file_name
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except:
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raise SynapseError(
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404,
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"Invalid media id token %r" % (request.postpath,),
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Codes.UNKNOWN,
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)
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def respond_404(request):
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respond_with_json(
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request, 404,
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cs_error(
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"Not found %r" % (request.postpath,),
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code=Codes.NOT_FOUND,
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),
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send_cors=True
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)
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@defer.inlineCallbacks
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def respond_with_file(request, media_type, file_path,
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file_size=None, upload_name=None):
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logger.debug("Responding with %r", file_path)
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if os.path.isfile(file_path):
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request.setHeader(b"Content-Type", media_type.encode("UTF-8"))
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if upload_name:
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if is_ascii(upload_name):
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request.setHeader(
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b"Content-Disposition",
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b"inline; filename=%s" % (
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urllib.quote(upload_name.encode("utf-8")),
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),
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)
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else:
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request.setHeader(
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b"Content-Disposition",
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b"inline; filename*=utf-8''%s" % (
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urllib.quote(upload_name.encode("utf-8")),
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),
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)
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# cache for at least a day.
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# XXX: we might want to turn this off for data we don't want to
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# recommend caching as it's sensitive or private - or at least
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# select private. don't bother setting Expires as all our
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# clients are smart enough to be happy with Cache-Control
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request.setHeader(
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b"Cache-Control", b"public,max-age=86400,s-maxage=86400"
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)
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if file_size is None:
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stat = os.stat(file_path)
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file_size = stat.st_size
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request.setHeader(
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b"Content-Length", b"%d" % (file_size,)
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)
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with open(file_path, "rb") as f:
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yield FileSender().beginFileTransfer(f, request)
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finish_request(request)
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else:
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respond_404(request)
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