diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 47c2b44bff..31a41e4a27 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -1,6 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2019 New Vector Ltd
+# Copyright 2019-2021 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.
@@ -17,10 +17,11 @@
import logging
import os
import urllib
-from typing import Awaitable
+from typing import Awaitable, Dict, Generator, List, Optional, Tuple
from twisted.internet.interfaces import IConsumer
from twisted.protocols.basic import FileSender
+from twisted.web.http import Request
from synapse.api.errors import Codes, SynapseError, cs_error
from synapse.http.server import finish_request, respond_with_json
@@ -46,7 +47,7 @@ TEXT_CONTENT_TYPES = [
]
-def parse_media_id(request):
+def parse_media_id(request: Request) -> Tuple[str, str, Optional[str]]:
try:
# This allows users to append e.g. /test.png to the URL. Useful for
# clients that parse the URL to see content type.
@@ -69,7 +70,7 @@ def parse_media_id(request):
)
-def respond_404(request):
+def respond_404(request: Request) -> None:
respond_with_json(
request,
404,
@@ -79,8 +80,12 @@ def respond_404(request):
async def respond_with_file(
- request, media_type, file_path, file_size=None, upload_name=None
-):
+ request: Request,
+ media_type: str,
+ file_path: str,
+ file_size: Optional[int] = None,
+ upload_name: Optional[str] = None,
+) -> None:
logger.debug("Responding with %r", file_path)
if os.path.isfile(file_path):
@@ -98,15 +103,20 @@ async def respond_with_file(
respond_404(request)
-def add_file_headers(request, media_type, file_size, upload_name):
+def add_file_headers(
+ request: Request,
+ media_type: str,
+ file_size: Optional[int],
+ upload_name: Optional[str],
+) -> None:
"""Adds the correct response headers in preparation for responding with the
media.
Args:
- request (twisted.web.http.Request)
- media_type (str): The media/content type.
- file_size (int): Size in bytes of the media, if known.
- upload_name (str): The name of the requested file, if any.
+ request
+ media_type: The media/content type.
+ file_size: Size in bytes of the media, if known.
+ upload_name: The name of the requested file, if any.
"""
def _quote(x):
@@ -153,7 +163,8 @@ def add_file_headers(request, media_type, file_size, upload_name):
# select private. don't bother setting Expires as all our
# clients are smart enough to be happy with Cache-Control
request.setHeader(b"Cache-Control", b"public,max-age=86400,s-maxage=86400")
- request.setHeader(b"Content-Length", b"%d" % (file_size,))
+ if file_size is not None:
+ request.setHeader(b"Content-Length", b"%d" % (file_size,))
# Tell web crawlers to not index, archive, or follow links in media. This
# should help to prevent things in the media repo from showing up in web
@@ -184,7 +195,7 @@ _FILENAME_SEPARATOR_CHARS = {
}
-def _can_encode_filename_as_token(x):
+def _can_encode_filename_as_token(x: str) -> bool:
for c in x:
# from RFC2616:
#
@@ -206,17 +217,21 @@ def _can_encode_filename_as_token(x):
async def respond_with_responder(
- request, responder, media_type, file_size, upload_name=None
-):
+ request: Request,
+ responder: "Optional[Responder]",
+ media_type: str,
+ file_size: Optional[int],
+ upload_name: Optional[str] = None,
+) -> None:
"""Responds to the request with given responder. If responder is None then
returns 404.
Args:
- request (twisted.web.http.Request)
- responder (Responder|None)
- media_type (str): The media/content type.
- file_size (int|None): Size in bytes of the media. If not known it should be None
- upload_name (str|None): The name of the requested file, if any.
+ request
+ responder
+ media_type: The media/content type.
+ file_size: Size in bytes of the media. If not known it should be None
+ upload_name: The name of the requested file, if any.
"""
if request._disconnected:
logger.warning(
@@ -308,22 +323,22 @@ class FileInfo:
self.thumbnail_type = thumbnail_type
-def get_filename_from_headers(headers):
+def get_filename_from_headers(headers: Dict[bytes, List[bytes]]) -> Optional[str]:
"""
Get the filename of the downloaded file by inspecting the
Content-Disposition HTTP header.
Args:
- headers (dict[bytes, list[bytes]]): The HTTP request headers.
+ headers: The HTTP request headers.
Returns:
- A Unicode string of the filename, or None.
+ The filename, or None.
"""
content_disposition = headers.get(b"Content-Disposition", [b""])
# No header, bail out.
if not content_disposition[0]:
- return
+ return None
_, params = _parse_header(content_disposition[0])
@@ -356,17 +371,16 @@ def get_filename_from_headers(headers):
return upload_name
-def _parse_header(line):
+def _parse_header(line: bytes) -> Tuple[bytes, Dict[bytes, bytes]]:
"""Parse a Content-type like header.
Cargo-culted from `cgi`, but works on bytes rather than strings.
Args:
- line (bytes): header to be parsed
+ line: header to be parsed
Returns:
- Tuple[bytes, dict[bytes, bytes]]:
- the main content-type, followed by the parameter dictionary
+ The main content-type, followed by the parameter dictionary
"""
parts = _parseparam(b";" + line)
key = next(parts)
@@ -386,16 +400,16 @@ def _parse_header(line):
return key, pdict
-def _parseparam(s):
+def _parseparam(s: bytes) -> Generator[bytes, None, None]:
"""Generator which splits the input on ;, respecting double-quoted sequences
Cargo-culted from `cgi`, but works on bytes rather than strings.
Args:
- s (bytes): header to be parsed
+ s: header to be parsed
Returns:
- Iterable[bytes]: the split input
+ The split input
"""
while s[:1] == b";":
s = s[1:]
|
