1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2020-2021 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.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import re
from typing import IO, TYPE_CHECKING, Dict, List, Optional, Tuple
from synapse.api.errors import Codes, SynapseError
from synapse.http.server import respond_with_json
from synapse.http.servlet import RestServlet, parse_bytes_from_args
from synapse.http.site import SynapseRequest
from synapse.media.media_storage import SpamMediaException
if TYPE_CHECKING:
from synapse.media.media_repository import MediaRepository
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
# The name of the lock to use when uploading media.
_UPLOAD_MEDIA_LOCK_NAME = "upload_media"
class BaseUploadServlet(RestServlet):
def __init__(self, hs: "HomeServer", media_repo: "MediaRepository"):
super().__init__()
self.media_repo = media_repo
self.filepaths = media_repo.filepaths
self.store = hs.get_datastores().main
self.server_name = hs.hostname
self.auth = hs.get_auth()
self.max_upload_size = hs.config.media.max_upload_size
def _get_file_metadata(
self, request: SynapseRequest
) -> Tuple[int, Optional[str], str]:
raw_content_length = request.getHeader("Content-Length")
if raw_content_length is None:
raise SynapseError(msg="Request must specify a Content-Length", code=400)
try:
content_length = int(raw_content_length)
except ValueError:
raise SynapseError(msg="Content-Length value is invalid", code=400)
if content_length > self.max_upload_size:
raise SynapseError(
msg="Upload request body is too large",
code=413,
errcode=Codes.TOO_LARGE,
)
args: Dict[bytes, List[bytes]] = request.args # type: ignore
upload_name_bytes = parse_bytes_from_args(args, "filename")
if upload_name_bytes:
try:
upload_name: Optional[str] = upload_name_bytes.decode("utf8")
except UnicodeDecodeError:
raise SynapseError(
msg="Invalid UTF-8 filename parameter: %r" % (upload_name_bytes,),
code=400,
)
# If the name is falsey (e.g. an empty byte string) ensure it is None.
else:
upload_name = None
headers = request.requestHeaders
if headers.hasHeader(b"Content-Type"):
content_type_headers = headers.getRawHeaders(b"Content-Type")
assert content_type_headers # for mypy
media_type = content_type_headers[0].decode("ascii")
else:
media_type = "application/octet-stream"
# if headers.hasHeader(b"Content-Disposition"):
# disposition = headers.getRawHeaders(b"Content-Disposition")[0]
# TODO(markjh): parse content-dispostion
return content_length, upload_name, media_type
class UploadServlet(BaseUploadServlet):
PATTERNS = [re.compile("/_matrix/media/(r0|v3|v1)/upload$")]
async def on_POST(self, request: SynapseRequest) -> None:
requester = await self.auth.get_user_by_req(request)
content_length, upload_name, media_type = self._get_file_metadata(request)
try:
content: IO = request.content # type: ignore
content_uri = await self.media_repo.create_content(
media_type, upload_name, content, content_length, requester.user
)
except SpamMediaException:
# For uploading of media we want to respond with a 400, instead of
# the default 404, as that would just be confusing.
raise SynapseError(400, "Bad content")
logger.info("Uploaded content with URI '%s'", content_uri)
respond_with_json(
request, 200, {"content_uri": str(content_uri)}, send_cors=True
)
class AsyncUploadServlet(BaseUploadServlet):
PATTERNS = [
re.compile(
"/_matrix/media/v3/upload/(?P<server_name>[^/]*)/(?P<media_id>[^/]*)$"
)
]
async def on_PUT(
self, request: SynapseRequest, server_name: str, media_id: str
) -> None:
requester = await self.auth.get_user_by_req(request)
if server_name != self.server_name:
raise SynapseError(
404,
"Non-local server name specified",
errcode=Codes.NOT_FOUND,
)
lock = await self.store.try_acquire_lock(_UPLOAD_MEDIA_LOCK_NAME, media_id)
if not lock:
raise SynapseError(
409,
"Media ID cannot be overwritten",
errcode=Codes.CANNOT_OVERWRITE_MEDIA,
)
async with lock:
await self.media_repo.verify_can_upload(media_id, requester.user)
content_length, upload_name, media_type = self._get_file_metadata(request)
try:
content: IO = request.content # type: ignore
await self.media_repo.update_content(
media_id,
media_type,
upload_name,
content,
content_length,
requester.user,
)
except SpamMediaException:
# For uploading of media we want to respond with a 400, instead of
# the default 404, as that would just be confusing.
raise SynapseError(400, "Bad content")
logger.info("Uploaded content for media ID %r", media_id)
respond_with_json(request, 200, {}, send_cors=True)
|
