mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-26 12:16:12 +00:00
![Sean Quah](/assets/img/avatar_default.png)
Refactor and convert `Linearizer` to async. This makes a `Linearizer` cancellation bug easier to fix. Also refactor to use an async context manager, which eliminates an unlikely footgun where code that doesn't immediately use the context manager could forget to release the lock. Signed-off-by: Sean Quah <seanq@element.io>
1016 lines
35 KiB
Python
1016 lines
35 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
|
|
# Copyright 2018-2021 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 errno
|
|
import logging
|
|
import os
|
|
import shutil
|
|
from io import BytesIO
|
|
from typing import IO, TYPE_CHECKING, Dict, List, Optional, Set, Tuple
|
|
|
|
import twisted.internet.error
|
|
import twisted.web.http
|
|
from twisted.internet.defer import Deferred
|
|
from twisted.web.resource import Resource
|
|
|
|
from synapse.api.errors import (
|
|
FederationDeniedError,
|
|
HttpResponseException,
|
|
NotFoundError,
|
|
RequestSendFailed,
|
|
SynapseError,
|
|
)
|
|
from synapse.config._base import ConfigError
|
|
from synapse.config.repository import ThumbnailRequirement
|
|
from synapse.http.site import SynapseRequest
|
|
from synapse.logging.context import defer_to_thread
|
|
from synapse.metrics.background_process_metrics import run_as_background_process
|
|
from synapse.types import UserID
|
|
from synapse.util.async_helpers import Linearizer
|
|
from synapse.util.retryutils import NotRetryingDestination
|
|
from synapse.util.stringutils import random_string
|
|
|
|
from ._base import (
|
|
FileInfo,
|
|
Responder,
|
|
ThumbnailInfo,
|
|
get_filename_from_headers,
|
|
respond_404,
|
|
respond_with_responder,
|
|
)
|
|
from .config_resource import MediaConfigResource
|
|
from .download_resource import DownloadResource
|
|
from .filepath import MediaFilePaths
|
|
from .media_storage import MediaStorage
|
|
from .preview_url_resource import PreviewUrlResource
|
|
from .storage_provider import StorageProviderWrapper
|
|
from .thumbnail_resource import ThumbnailResource
|
|
from .thumbnailer import Thumbnailer, ThumbnailError
|
|
from .upload_resource import UploadResource
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.server import HomeServer
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
UPDATE_RECENTLY_ACCESSED_TS = 60 * 1000
|
|
|
|
|
|
class MediaRepository:
|
|
def __init__(self, hs: "HomeServer"):
|
|
self.hs = hs
|
|
self.auth = hs.get_auth()
|
|
self.client = hs.get_federation_http_client()
|
|
self.clock = hs.get_clock()
|
|
self.server_name = hs.hostname
|
|
self.store = hs.get_datastores().main
|
|
self.max_upload_size = hs.config.media.max_upload_size
|
|
self.max_image_pixels = hs.config.media.max_image_pixels
|
|
|
|
Thumbnailer.set_limits(self.max_image_pixels)
|
|
|
|
self.primary_base_path: str = hs.config.media.media_store_path
|
|
self.filepaths: MediaFilePaths = MediaFilePaths(self.primary_base_path)
|
|
|
|
self.dynamic_thumbnails = hs.config.media.dynamic_thumbnails
|
|
self.thumbnail_requirements = hs.config.media.thumbnail_requirements
|
|
|
|
self.remote_media_linearizer = Linearizer(name="media_remote")
|
|
|
|
self.recently_accessed_remotes: Set[Tuple[str, str]] = set()
|
|
self.recently_accessed_locals: Set[str] = set()
|
|
|
|
self.federation_domain_whitelist = (
|
|
hs.config.federation.federation_domain_whitelist
|
|
)
|
|
|
|
# List of StorageProviders where we should search for media and
|
|
# potentially upload to.
|
|
storage_providers = []
|
|
|
|
for (
|
|
clz,
|
|
provider_config,
|
|
wrapper_config,
|
|
) in hs.config.media.media_storage_providers:
|
|
backend = clz(hs, provider_config)
|
|
provider = StorageProviderWrapper(
|
|
backend,
|
|
store_local=wrapper_config.store_local,
|
|
store_remote=wrapper_config.store_remote,
|
|
store_synchronous=wrapper_config.store_synchronous,
|
|
)
|
|
storage_providers.append(provider)
|
|
|
|
self.media_storage = MediaStorage(
|
|
self.hs, self.primary_base_path, self.filepaths, storage_providers
|
|
)
|
|
|
|
self.clock.looping_call(
|
|
self._start_update_recently_accessed, UPDATE_RECENTLY_ACCESSED_TS
|
|
)
|
|
|
|
def _start_update_recently_accessed(self) -> Deferred:
|
|
return run_as_background_process(
|
|
"update_recently_accessed_media", self._update_recently_accessed
|
|
)
|
|
|
|
async def _update_recently_accessed(self) -> None:
|
|
remote_media = self.recently_accessed_remotes
|
|
self.recently_accessed_remotes = set()
|
|
|
|
local_media = self.recently_accessed_locals
|
|
self.recently_accessed_locals = set()
|
|
|
|
await self.store.update_cached_last_access_time(
|
|
local_media, remote_media, self.clock.time_msec()
|
|
)
|
|
|
|
def mark_recently_accessed(self, server_name: Optional[str], media_id: str) -> None:
|
|
"""Mark the given media as recently accessed.
|
|
|
|
Args:
|
|
server_name: Origin server of media, or None if local
|
|
media_id: The media ID of the content
|
|
"""
|
|
if server_name:
|
|
self.recently_accessed_remotes.add((server_name, media_id))
|
|
else:
|
|
self.recently_accessed_locals.add(media_id)
|
|
|
|
async def create_content(
|
|
self,
|
|
media_type: str,
|
|
upload_name: Optional[str],
|
|
content: IO,
|
|
content_length: int,
|
|
auth_user: UserID,
|
|
) -> str:
|
|
"""Store uploaded content for a local user and return the mxc URL
|
|
|
|
Args:
|
|
media_type: The content type of the file.
|
|
upload_name: The name of the file, if provided.
|
|
content: A file like object that is the content to store
|
|
content_length: The length of the content
|
|
auth_user: The user_id of the uploader
|
|
|
|
Returns:
|
|
The mxc url of the stored content
|
|
"""
|
|
|
|
media_id = random_string(24)
|
|
|
|
file_info = FileInfo(server_name=None, file_id=media_id)
|
|
|
|
fname = await self.media_storage.store_file(content, file_info)
|
|
|
|
logger.info("Stored local media in file %r", fname)
|
|
|
|
await self.store.store_local_media(
|
|
media_id=media_id,
|
|
media_type=media_type,
|
|
time_now_ms=self.clock.time_msec(),
|
|
upload_name=upload_name,
|
|
media_length=content_length,
|
|
user_id=auth_user,
|
|
)
|
|
|
|
await self._generate_thumbnails(None, media_id, media_id, media_type)
|
|
|
|
return "mxc://%s/%s" % (self.server_name, media_id)
|
|
|
|
async def get_local_media(
|
|
self, request: SynapseRequest, media_id: str, name: Optional[str]
|
|
) -> None:
|
|
"""Responds to requests for local media, if exists, or returns 404.
|
|
|
|
Args:
|
|
request: The incoming request.
|
|
media_id: The media ID of the content. (This is the same as
|
|
the file_id for local content.)
|
|
name: Optional name that, if specified, will be used as
|
|
the filename in the Content-Disposition header of the response.
|
|
|
|
Returns:
|
|
Resolves once a response has successfully been written to request
|
|
"""
|
|
media_info = await self.store.get_local_media(media_id)
|
|
if not media_info or media_info["quarantined_by"]:
|
|
respond_404(request)
|
|
return
|
|
|
|
self.mark_recently_accessed(None, media_id)
|
|
|
|
media_type = media_info["media_type"]
|
|
if not media_type:
|
|
media_type = "application/octet-stream"
|
|
media_length = media_info["media_length"]
|
|
upload_name = name if name else media_info["upload_name"]
|
|
url_cache = media_info["url_cache"]
|
|
|
|
file_info = FileInfo(None, media_id, url_cache=bool(url_cache))
|
|
|
|
responder = await self.media_storage.fetch_media(file_info)
|
|
await respond_with_responder(
|
|
request, responder, media_type, media_length, upload_name
|
|
)
|
|
|
|
async def get_remote_media(
|
|
self,
|
|
request: SynapseRequest,
|
|
server_name: str,
|
|
media_id: str,
|
|
name: Optional[str],
|
|
) -> None:
|
|
"""Respond to requests for remote media.
|
|
|
|
Args:
|
|
request: The incoming request.
|
|
server_name: Remote server_name where the media originated.
|
|
media_id: The media ID of the content (as defined by the remote server).
|
|
name: Optional name that, if specified, will be used as
|
|
the filename in the Content-Disposition header of the response.
|
|
|
|
Returns:
|
|
Resolves once a response has successfully been written to request
|
|
"""
|
|
if (
|
|
self.federation_domain_whitelist is not None
|
|
and server_name not in self.federation_domain_whitelist
|
|
):
|
|
raise FederationDeniedError(server_name)
|
|
|
|
self.mark_recently_accessed(server_name, media_id)
|
|
|
|
# We linearize here to ensure that we don't try and download remote
|
|
# media multiple times concurrently
|
|
key = (server_name, media_id)
|
|
async with self.remote_media_linearizer.queue(key):
|
|
responder, media_info = await self._get_remote_media_impl(
|
|
server_name, media_id
|
|
)
|
|
|
|
# We deliberately stream the file outside the lock
|
|
if responder:
|
|
media_type = media_info["media_type"]
|
|
media_length = media_info["media_length"]
|
|
upload_name = name if name else media_info["upload_name"]
|
|
await respond_with_responder(
|
|
request, responder, media_type, media_length, upload_name
|
|
)
|
|
else:
|
|
respond_404(request)
|
|
|
|
async def get_remote_media_info(self, server_name: str, media_id: str) -> dict:
|
|
"""Gets the media info associated with the remote file, downloading
|
|
if necessary.
|
|
|
|
Args:
|
|
server_name: Remote server_name where the media originated.
|
|
media_id: The media ID of the content (as defined by the remote server).
|
|
|
|
Returns:
|
|
The media info of the file
|
|
"""
|
|
if (
|
|
self.federation_domain_whitelist is not None
|
|
and server_name not in self.federation_domain_whitelist
|
|
):
|
|
raise FederationDeniedError(server_name)
|
|
|
|
# We linearize here to ensure that we don't try and download remote
|
|
# media multiple times concurrently
|
|
key = (server_name, media_id)
|
|
async with self.remote_media_linearizer.queue(key):
|
|
responder, media_info = await self._get_remote_media_impl(
|
|
server_name, media_id
|
|
)
|
|
|
|
# Ensure we actually use the responder so that it releases resources
|
|
if responder:
|
|
with responder:
|
|
pass
|
|
|
|
return media_info
|
|
|
|
async def _get_remote_media_impl(
|
|
self, server_name: str, media_id: str
|
|
) -> Tuple[Optional[Responder], dict]:
|
|
"""Looks for media in local cache, if not there then attempt to
|
|
download from remote server.
|
|
|
|
Args:
|
|
server_name (str): Remote server_name where the media originated.
|
|
media_id (str): The media ID of the content (as defined by the
|
|
remote server).
|
|
|
|
Returns:
|
|
A tuple of responder and the media info of the file.
|
|
"""
|
|
media_info = await self.store.get_cached_remote_media(server_name, media_id)
|
|
|
|
# file_id is the ID we use to track the file locally. If we've already
|
|
# seen the file then reuse the existing ID, otherwise generate a new
|
|
# one.
|
|
|
|
# If we have an entry in the DB, try and look for it
|
|
if media_info:
|
|
file_id = media_info["filesystem_id"]
|
|
file_info = FileInfo(server_name, file_id)
|
|
|
|
if media_info["quarantined_by"]:
|
|
logger.info("Media is quarantined")
|
|
raise NotFoundError()
|
|
|
|
if not media_info["media_type"]:
|
|
media_info["media_type"] = "application/octet-stream"
|
|
|
|
responder = await self.media_storage.fetch_media(file_info)
|
|
if responder:
|
|
return responder, media_info
|
|
|
|
# Failed to find the file anywhere, lets download it.
|
|
|
|
try:
|
|
media_info = await self._download_remote_file(
|
|
server_name,
|
|
media_id,
|
|
)
|
|
except SynapseError:
|
|
raise
|
|
except Exception as e:
|
|
# An exception may be because we downloaded media in another
|
|
# process, so let's check if we magically have the media.
|
|
media_info = await self.store.get_cached_remote_media(server_name, media_id)
|
|
if not media_info:
|
|
raise e
|
|
|
|
file_id = media_info["filesystem_id"]
|
|
if not media_info["media_type"]:
|
|
media_info["media_type"] = "application/octet-stream"
|
|
file_info = FileInfo(server_name, file_id)
|
|
|
|
# We generate thumbnails even if another process downloaded the media
|
|
# as a) it's conceivable that the other download request dies before it
|
|
# generates thumbnails, but mainly b) we want to be sure the thumbnails
|
|
# have finished being generated before responding to the client,
|
|
# otherwise they'll request thumbnails and get a 404 if they're not
|
|
# ready yet.
|
|
await self._generate_thumbnails(
|
|
server_name, media_id, file_id, media_info["media_type"]
|
|
)
|
|
|
|
responder = await self.media_storage.fetch_media(file_info)
|
|
return responder, media_info
|
|
|
|
async def _download_remote_file(
|
|
self,
|
|
server_name: str,
|
|
media_id: str,
|
|
) -> dict:
|
|
"""Attempt to download the remote file from the given server name,
|
|
using the given file_id as the local id.
|
|
|
|
Args:
|
|
server_name: Originating server
|
|
media_id: The media ID of the content (as defined by the
|
|
remote server). This is different than the file_id, which is
|
|
locally generated.
|
|
file_id: Local file ID
|
|
|
|
Returns:
|
|
The media info of the file.
|
|
"""
|
|
|
|
file_id = random_string(24)
|
|
|
|
file_info = FileInfo(server_name=server_name, file_id=file_id)
|
|
|
|
with self.media_storage.store_into_file(file_info) as (f, fname, finish):
|
|
request_path = "/".join(
|
|
("/_matrix/media/r0/download", server_name, media_id)
|
|
)
|
|
try:
|
|
length, headers = await self.client.get_file(
|
|
server_name,
|
|
request_path,
|
|
output_stream=f,
|
|
max_size=self.max_upload_size,
|
|
args={
|
|
# tell the remote server to 404 if it doesn't
|
|
# recognise the server_name, to make sure we don't
|
|
# end up with a routing loop.
|
|
"allow_remote": "false"
|
|
},
|
|
)
|
|
except RequestSendFailed as e:
|
|
logger.warning(
|
|
"Request failed fetching remote media %s/%s: %r",
|
|
server_name,
|
|
media_id,
|
|
e,
|
|
)
|
|
raise SynapseError(502, "Failed to fetch remote media")
|
|
|
|
except HttpResponseException as e:
|
|
logger.warning(
|
|
"HTTP error fetching remote media %s/%s: %s",
|
|
server_name,
|
|
media_id,
|
|
e.response,
|
|
)
|
|
if e.code == twisted.web.http.NOT_FOUND:
|
|
raise e.to_synapse_error()
|
|
raise SynapseError(502, "Failed to fetch remote media")
|
|
|
|
except SynapseError:
|
|
logger.warning(
|
|
"Failed to fetch remote media %s/%s", server_name, media_id
|
|
)
|
|
raise
|
|
except NotRetryingDestination:
|
|
logger.warning("Not retrying destination %r", server_name)
|
|
raise SynapseError(502, "Failed to fetch remote media")
|
|
except Exception:
|
|
logger.exception(
|
|
"Failed to fetch remote media %s/%s", server_name, media_id
|
|
)
|
|
raise SynapseError(502, "Failed to fetch remote media")
|
|
|
|
await finish()
|
|
|
|
if b"Content-Type" in headers:
|
|
media_type = headers[b"Content-Type"][0].decode("ascii")
|
|
else:
|
|
media_type = "application/octet-stream"
|
|
upload_name = get_filename_from_headers(headers)
|
|
time_now_ms = self.clock.time_msec()
|
|
|
|
# Multiple remote media download requests can race (when using
|
|
# multiple media repos), so this may throw a violation constraint
|
|
# exception. If it does we'll delete the newly downloaded file from
|
|
# disk (as we're in the ctx manager).
|
|
#
|
|
# However: we've already called `finish()` so we may have also
|
|
# written to the storage providers. This is preferable to the
|
|
# alternative where we call `finish()` *after* this, where we could
|
|
# end up having an entry in the DB but fail to write the files to
|
|
# the storage providers.
|
|
await self.store.store_cached_remote_media(
|
|
origin=server_name,
|
|
media_id=media_id,
|
|
media_type=media_type,
|
|
time_now_ms=self.clock.time_msec(),
|
|
upload_name=upload_name,
|
|
media_length=length,
|
|
filesystem_id=file_id,
|
|
)
|
|
|
|
logger.info("Stored remote media in file %r", fname)
|
|
|
|
media_info = {
|
|
"media_type": media_type,
|
|
"media_length": length,
|
|
"upload_name": upload_name,
|
|
"created_ts": time_now_ms,
|
|
"filesystem_id": file_id,
|
|
}
|
|
|
|
return media_info
|
|
|
|
def _get_thumbnail_requirements(
|
|
self, media_type: str
|
|
) -> Tuple[ThumbnailRequirement, ...]:
|
|
scpos = media_type.find(";")
|
|
if scpos > 0:
|
|
media_type = media_type[:scpos]
|
|
return self.thumbnail_requirements.get(media_type, ())
|
|
|
|
def _generate_thumbnail(
|
|
self,
|
|
thumbnailer: Thumbnailer,
|
|
t_width: int,
|
|
t_height: int,
|
|
t_method: str,
|
|
t_type: str,
|
|
) -> Optional[BytesIO]:
|
|
m_width = thumbnailer.width
|
|
m_height = thumbnailer.height
|
|
|
|
if m_width * m_height >= self.max_image_pixels:
|
|
logger.info(
|
|
"Image too large to thumbnail %r x %r > %r",
|
|
m_width,
|
|
m_height,
|
|
self.max_image_pixels,
|
|
)
|
|
return None
|
|
|
|
if thumbnailer.transpose_method is not None:
|
|
m_width, m_height = thumbnailer.transpose()
|
|
|
|
if t_method == "crop":
|
|
return thumbnailer.crop(t_width, t_height, t_type)
|
|
elif t_method == "scale":
|
|
t_width, t_height = thumbnailer.aspect(t_width, t_height)
|
|
t_width = min(m_width, t_width)
|
|
t_height = min(m_height, t_height)
|
|
return thumbnailer.scale(t_width, t_height, t_type)
|
|
|
|
return None
|
|
|
|
async def generate_local_exact_thumbnail(
|
|
self,
|
|
media_id: str,
|
|
t_width: int,
|
|
t_height: int,
|
|
t_method: str,
|
|
t_type: str,
|
|
url_cache: bool,
|
|
) -> Optional[str]:
|
|
input_path = await self.media_storage.ensure_media_is_in_local_cache(
|
|
FileInfo(None, media_id, url_cache=url_cache)
|
|
)
|
|
|
|
try:
|
|
thumbnailer = Thumbnailer(input_path)
|
|
except ThumbnailError as e:
|
|
logger.warning(
|
|
"Unable to generate a thumbnail for local media %s using a method of %s and type of %s: %s",
|
|
media_id,
|
|
t_method,
|
|
t_type,
|
|
e,
|
|
)
|
|
return None
|
|
|
|
t_byte_source = await defer_to_thread(
|
|
self.hs.get_reactor(),
|
|
self._generate_thumbnail,
|
|
thumbnailer,
|
|
t_width,
|
|
t_height,
|
|
t_method,
|
|
t_type,
|
|
)
|
|
|
|
if t_byte_source:
|
|
try:
|
|
file_info = FileInfo(
|
|
server_name=None,
|
|
file_id=media_id,
|
|
url_cache=url_cache,
|
|
thumbnail=ThumbnailInfo(
|
|
width=t_width,
|
|
height=t_height,
|
|
method=t_method,
|
|
type=t_type,
|
|
),
|
|
)
|
|
|
|
output_path = await self.media_storage.store_file(
|
|
t_byte_source, file_info
|
|
)
|
|
finally:
|
|
t_byte_source.close()
|
|
|
|
logger.info("Stored thumbnail in file %r", output_path)
|
|
|
|
t_len = os.path.getsize(output_path)
|
|
|
|
await self.store.store_local_thumbnail(
|
|
media_id, t_width, t_height, t_type, t_method, t_len
|
|
)
|
|
|
|
return output_path
|
|
|
|
# Could not generate thumbnail.
|
|
return None
|
|
|
|
async def generate_remote_exact_thumbnail(
|
|
self,
|
|
server_name: str,
|
|
file_id: str,
|
|
media_id: str,
|
|
t_width: int,
|
|
t_height: int,
|
|
t_method: str,
|
|
t_type: str,
|
|
) -> Optional[str]:
|
|
input_path = await self.media_storage.ensure_media_is_in_local_cache(
|
|
FileInfo(server_name, file_id)
|
|
)
|
|
|
|
try:
|
|
thumbnailer = Thumbnailer(input_path)
|
|
except ThumbnailError as e:
|
|
logger.warning(
|
|
"Unable to generate a thumbnail for remote media %s from %s using a method of %s and type of %s: %s",
|
|
media_id,
|
|
server_name,
|
|
t_method,
|
|
t_type,
|
|
e,
|
|
)
|
|
return None
|
|
|
|
t_byte_source = await defer_to_thread(
|
|
self.hs.get_reactor(),
|
|
self._generate_thumbnail,
|
|
thumbnailer,
|
|
t_width,
|
|
t_height,
|
|
t_method,
|
|
t_type,
|
|
)
|
|
|
|
if t_byte_source:
|
|
try:
|
|
file_info = FileInfo(
|
|
server_name=server_name,
|
|
file_id=file_id,
|
|
thumbnail=ThumbnailInfo(
|
|
width=t_width,
|
|
height=t_height,
|
|
method=t_method,
|
|
type=t_type,
|
|
),
|
|
)
|
|
|
|
output_path = await self.media_storage.store_file(
|
|
t_byte_source, file_info
|
|
)
|
|
finally:
|
|
t_byte_source.close()
|
|
|
|
logger.info("Stored thumbnail in file %r", output_path)
|
|
|
|
t_len = os.path.getsize(output_path)
|
|
|
|
await self.store.store_remote_media_thumbnail(
|
|
server_name,
|
|
media_id,
|
|
file_id,
|
|
t_width,
|
|
t_height,
|
|
t_type,
|
|
t_method,
|
|
t_len,
|
|
)
|
|
|
|
return output_path
|
|
|
|
# Could not generate thumbnail.
|
|
return None
|
|
|
|
async def _generate_thumbnails(
|
|
self,
|
|
server_name: Optional[str],
|
|
media_id: str,
|
|
file_id: str,
|
|
media_type: str,
|
|
url_cache: bool = False,
|
|
) -> Optional[dict]:
|
|
"""Generate and store thumbnails for an image.
|
|
|
|
Args:
|
|
server_name: The server name if remote media, else None if local
|
|
media_id: The media ID of the content. (This is the same as
|
|
the file_id for local content)
|
|
file_id: Local file ID
|
|
media_type: The content type of the file
|
|
url_cache: If we are thumbnailing images downloaded for the URL cache,
|
|
used exclusively by the url previewer
|
|
|
|
Returns:
|
|
Dict with "width" and "height" keys of original image or None if the
|
|
media cannot be thumbnailed.
|
|
"""
|
|
requirements = self._get_thumbnail_requirements(media_type)
|
|
if not requirements:
|
|
return None
|
|
|
|
input_path = await self.media_storage.ensure_media_is_in_local_cache(
|
|
FileInfo(server_name, file_id, url_cache=url_cache)
|
|
)
|
|
|
|
try:
|
|
thumbnailer = Thumbnailer(input_path)
|
|
except ThumbnailError as e:
|
|
logger.warning(
|
|
"Unable to generate thumbnails for remote media %s from %s of type %s: %s",
|
|
media_id,
|
|
server_name,
|
|
media_type,
|
|
e,
|
|
)
|
|
return None
|
|
|
|
m_width = thumbnailer.width
|
|
m_height = thumbnailer.height
|
|
|
|
if m_width * m_height >= self.max_image_pixels:
|
|
logger.info(
|
|
"Image too large to thumbnail %r x %r > %r",
|
|
m_width,
|
|
m_height,
|
|
self.max_image_pixels,
|
|
)
|
|
return None
|
|
|
|
if thumbnailer.transpose_method is not None:
|
|
m_width, m_height = await defer_to_thread(
|
|
self.hs.get_reactor(), thumbnailer.transpose
|
|
)
|
|
|
|
# We deduplicate the thumbnail sizes by ignoring the cropped versions if
|
|
# they have the same dimensions of a scaled one.
|
|
thumbnails: Dict[Tuple[int, int, str], str] = {}
|
|
for requirement in requirements:
|
|
if requirement.method == "crop":
|
|
thumbnails.setdefault(
|
|
(requirement.width, requirement.height, requirement.media_type),
|
|
requirement.method,
|
|
)
|
|
elif requirement.method == "scale":
|
|
t_width, t_height = thumbnailer.aspect(
|
|
requirement.width, requirement.height
|
|
)
|
|
t_width = min(m_width, t_width)
|
|
t_height = min(m_height, t_height)
|
|
thumbnails[
|
|
(t_width, t_height, requirement.media_type)
|
|
] = requirement.method
|
|
|
|
# Now we generate the thumbnails for each dimension, store it
|
|
for (t_width, t_height, t_type), t_method in thumbnails.items():
|
|
# Generate the thumbnail
|
|
if t_method == "crop":
|
|
t_byte_source = await defer_to_thread(
|
|
self.hs.get_reactor(), thumbnailer.crop, t_width, t_height, t_type
|
|
)
|
|
elif t_method == "scale":
|
|
t_byte_source = await defer_to_thread(
|
|
self.hs.get_reactor(), thumbnailer.scale, t_width, t_height, t_type
|
|
)
|
|
else:
|
|
logger.error("Unrecognized method: %r", t_method)
|
|
continue
|
|
|
|
if not t_byte_source:
|
|
continue
|
|
|
|
file_info = FileInfo(
|
|
server_name=server_name,
|
|
file_id=file_id,
|
|
url_cache=url_cache,
|
|
thumbnail=ThumbnailInfo(
|
|
width=t_width,
|
|
height=t_height,
|
|
method=t_method,
|
|
type=t_type,
|
|
),
|
|
)
|
|
|
|
with self.media_storage.store_into_file(file_info) as (f, fname, finish):
|
|
try:
|
|
await self.media_storage.write_to_file(t_byte_source, f)
|
|
await finish()
|
|
finally:
|
|
t_byte_source.close()
|
|
|
|
t_len = os.path.getsize(fname)
|
|
|
|
# Write to database
|
|
if server_name:
|
|
# Multiple remote media download requests can race (when
|
|
# using multiple media repos), so this may throw a violation
|
|
# constraint exception. If it does we'll delete the newly
|
|
# generated thumbnail from disk (as we're in the ctx
|
|
# manager).
|
|
#
|
|
# However: we've already called `finish()` so we may have
|
|
# also written to the storage providers. This is preferable
|
|
# to the alternative where we call `finish()` *after* this,
|
|
# where we could end up having an entry in the DB but fail
|
|
# to write the files to the storage providers.
|
|
try:
|
|
await self.store.store_remote_media_thumbnail(
|
|
server_name,
|
|
media_id,
|
|
file_id,
|
|
t_width,
|
|
t_height,
|
|
t_type,
|
|
t_method,
|
|
t_len,
|
|
)
|
|
except Exception as e:
|
|
thumbnail_exists = await self.store.get_remote_media_thumbnail(
|
|
server_name,
|
|
media_id,
|
|
t_width,
|
|
t_height,
|
|
t_type,
|
|
)
|
|
if not thumbnail_exists:
|
|
raise e
|
|
else:
|
|
await self.store.store_local_thumbnail(
|
|
media_id, t_width, t_height, t_type, t_method, t_len
|
|
)
|
|
|
|
return {"width": m_width, "height": m_height}
|
|
|
|
async def delete_old_remote_media(self, before_ts: int) -> Dict[str, int]:
|
|
old_media = await self.store.get_remote_media_before(before_ts)
|
|
|
|
deleted = 0
|
|
|
|
for media in old_media:
|
|
origin = media["media_origin"]
|
|
media_id = media["media_id"]
|
|
file_id = media["filesystem_id"]
|
|
key = (origin, media_id)
|
|
|
|
logger.info("Deleting: %r", key)
|
|
|
|
# TODO: Should we delete from the backup store
|
|
|
|
async with self.remote_media_linearizer.queue(key):
|
|
full_path = self.filepaths.remote_media_filepath(origin, file_id)
|
|
try:
|
|
os.remove(full_path)
|
|
except OSError as e:
|
|
logger.warning("Failed to remove file: %r", full_path)
|
|
if e.errno == errno.ENOENT:
|
|
pass
|
|
else:
|
|
continue
|
|
|
|
thumbnail_dir = self.filepaths.remote_media_thumbnail_dir(
|
|
origin, file_id
|
|
)
|
|
shutil.rmtree(thumbnail_dir, ignore_errors=True)
|
|
|
|
await self.store.delete_remote_media(origin, media_id)
|
|
deleted += 1
|
|
|
|
return {"deleted": deleted}
|
|
|
|
async def delete_local_media_ids(
|
|
self, media_ids: List[str]
|
|
) -> Tuple[List[str], int]:
|
|
"""
|
|
Delete the given local or remote media ID from this server
|
|
|
|
Args:
|
|
media_id: The media ID to delete.
|
|
Returns:
|
|
A tuple of (list of deleted media IDs, total deleted media IDs).
|
|
"""
|
|
return await self._remove_local_media_from_disk(media_ids)
|
|
|
|
async def delete_old_local_media(
|
|
self,
|
|
before_ts: int,
|
|
size_gt: int = 0,
|
|
keep_profiles: bool = True,
|
|
) -> Tuple[List[str], int]:
|
|
"""
|
|
Delete local or remote media from this server by size and timestamp. Removes
|
|
media files, any thumbnails and cached URLs.
|
|
|
|
Args:
|
|
before_ts: Unix timestamp in ms.
|
|
Files that were last used before this timestamp will be deleted
|
|
size_gt: Size of the media in bytes. Files that are larger will be deleted
|
|
keep_profiles: Switch to delete also files that are still used in image data
|
|
(e.g user profile, room avatar)
|
|
If false these files will be deleted
|
|
Returns:
|
|
A tuple of (list of deleted media IDs, total deleted media IDs).
|
|
"""
|
|
old_media = await self.store.get_local_media_before(
|
|
before_ts,
|
|
size_gt,
|
|
keep_profiles,
|
|
)
|
|
return await self._remove_local_media_from_disk(old_media)
|
|
|
|
async def _remove_local_media_from_disk(
|
|
self, media_ids: List[str]
|
|
) -> Tuple[List[str], int]:
|
|
"""
|
|
Delete local or remote media from this server. Removes media files,
|
|
any thumbnails and cached URLs.
|
|
|
|
Args:
|
|
media_ids: List of media_id to delete
|
|
Returns:
|
|
A tuple of (list of deleted media IDs, total deleted media IDs).
|
|
"""
|
|
removed_media = []
|
|
for media_id in media_ids:
|
|
logger.info("Deleting media with ID '%s'", media_id)
|
|
full_path = self.filepaths.local_media_filepath(media_id)
|
|
try:
|
|
os.remove(full_path)
|
|
except OSError as e:
|
|
logger.warning("Failed to remove file: %r: %s", full_path, e)
|
|
if e.errno == errno.ENOENT:
|
|
pass
|
|
else:
|
|
continue
|
|
|
|
thumbnail_dir = self.filepaths.local_media_thumbnail_dir(media_id)
|
|
shutil.rmtree(thumbnail_dir, ignore_errors=True)
|
|
|
|
await self.store.delete_remote_media(self.server_name, media_id)
|
|
|
|
await self.store.delete_url_cache((media_id,))
|
|
await self.store.delete_url_cache_media((media_id,))
|
|
|
|
removed_media.append(media_id)
|
|
|
|
return removed_media, len(removed_media)
|
|
|
|
|
|
class MediaRepositoryResource(Resource):
|
|
"""File uploading and downloading.
|
|
|
|
Uploads are POSTed to a resource which returns a token which is used to GET
|
|
the download::
|
|
|
|
=> POST /_matrix/media/r0/upload HTTP/1.1
|
|
Content-Type: <media-type>
|
|
Content-Length: <content-length>
|
|
|
|
<media>
|
|
|
|
<= HTTP/1.1 200 OK
|
|
Content-Type: application/json
|
|
|
|
{ "content_uri": "mxc://<server-name>/<media-id>" }
|
|
|
|
=> GET /_matrix/media/r0/download/<server-name>/<media-id> HTTP/1.1
|
|
|
|
<= HTTP/1.1 200 OK
|
|
Content-Type: <media-type>
|
|
Content-Disposition: attachment;filename=<upload-filename>
|
|
|
|
<media>
|
|
|
|
Clients can get thumbnails by supplying a desired width and height and
|
|
thumbnailing method::
|
|
|
|
=> GET /_matrix/media/r0/thumbnail/<server_name>
|
|
/<media-id>?width=<w>&height=<h>&method=<m> HTTP/1.1
|
|
|
|
<= HTTP/1.1 200 OK
|
|
Content-Type: image/jpeg or image/png
|
|
|
|
<thumbnail>
|
|
|
|
The thumbnail methods are "crop" and "scale". "scale" tries to return an
|
|
image where either the width or the height is smaller than the requested
|
|
size. The client should then scale and letterbox the image if it needs to
|
|
fit within a given rectangle. "crop" tries to return an image where the
|
|
width and height are close to the requested size and the aspect matches
|
|
the requested size. The client should scale the image if it needs to fit
|
|
within a given rectangle.
|
|
"""
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
# If we're not configured to use it, raise if we somehow got here.
|
|
if not hs.config.media.can_load_media_repo:
|
|
raise ConfigError("Synapse is not configured to use a media repo.")
|
|
|
|
super().__init__()
|
|
media_repo = hs.get_media_repository()
|
|
|
|
self.putChild(b"upload", UploadResource(hs, media_repo))
|
|
self.putChild(b"download", DownloadResource(hs, media_repo))
|
|
self.putChild(
|
|
b"thumbnail", ThumbnailResource(hs, media_repo, media_repo.media_storage)
|
|
)
|
|
if hs.config.media.url_preview_enabled:
|
|
self.putChild(
|
|
b"preview_url",
|
|
PreviewUrlResource(hs, media_repo, media_repo.media_storage),
|
|
)
|
|
self.putChild(b"config", MediaConfigResource(hs))
|