272 lines
10 KiB
Python
272 lines
10 KiB
Python
# Copyright 2014, 2015 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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import logging
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import os
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from typing import Any, Dict, List, Tuple
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from urllib.request import getproxies_environment # type: ignore
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import attr
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from synapse.config.server import generate_ip_set
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from synapse.types import JsonDict
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from synapse.util.check_dependencies import check_requirements
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from synapse.util.module_loader import load_module
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from ._base import Config, ConfigError
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logger = logging.getLogger(__name__)
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DEFAULT_THUMBNAIL_SIZES = [
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{"width": 32, "height": 32, "method": "crop"},
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{"width": 96, "height": 96, "method": "crop"},
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{"width": 320, "height": 240, "method": "scale"},
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{"width": 640, "height": 480, "method": "scale"},
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{"width": 800, "height": 600, "method": "scale"},
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]
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THUMBNAIL_SIZE_YAML = """\
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# - width: %(width)i
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# height: %(height)i
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# method: %(method)s
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"""
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# A map from the given media type to the type of thumbnail we should generate
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# for it.
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THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP = {
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"image/jpeg": "jpeg",
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"image/jpg": "jpeg",
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"image/webp": "jpeg",
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# Thumbnails can only be jpeg or png. We choose png thumbnails for gif
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# because it can have transparency.
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"image/gif": "png",
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"image/png": "png",
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}
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HTTP_PROXY_SET_WARNING = """\
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The Synapse config url_preview_ip_range_blacklist will be ignored as an HTTP(s) proxy is configured."""
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@attr.s(frozen=True, slots=True, auto_attribs=True)
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class ThumbnailRequirement:
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width: int
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height: int
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method: str
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media_type: str
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@attr.s(frozen=True, slots=True, auto_attribs=True)
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class MediaStorageProviderConfig:
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store_local: bool # Whether to store newly uploaded local files
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store_remote: bool # Whether to store newly downloaded remote files
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store_synchronous: bool # Whether to wait for successful storage for local uploads
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def parse_thumbnail_requirements(
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thumbnail_sizes: List[JsonDict],
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) -> Dict[str, Tuple[ThumbnailRequirement, ...]]:
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"""Takes a list of dictionaries with "width", "height", and "method" keys
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and creates a map from image media types to the thumbnail size, thumbnailing
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method, and thumbnail media type to precalculate
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Args:
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thumbnail_sizes: List of dicts with "width", "height", and "method" keys
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Returns:
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Dictionary mapping from media type string to list of ThumbnailRequirement.
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"""
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requirements: Dict[str, List[ThumbnailRequirement]] = {}
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for size in thumbnail_sizes:
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width = size["width"]
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height = size["height"]
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method = size["method"]
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for format, thumbnail_format in THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP.items():
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requirement = requirements.setdefault(format, [])
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if thumbnail_format == "jpeg":
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requirement.append(
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ThumbnailRequirement(width, height, method, "image/jpeg")
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)
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elif thumbnail_format == "png":
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requirement.append(
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ThumbnailRequirement(width, height, method, "image/png")
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)
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else:
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raise Exception(
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"Unknown thumbnail mapping from %s to %s. This is a Synapse problem, please report!"
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% (format, thumbnail_format)
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)
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return {
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media_type: tuple(thumbnails) for media_type, thumbnails in requirements.items()
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}
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class ContentRepositoryConfig(Config):
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section = "media"
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def read_config(self, config: JsonDict, **kwargs: Any) -> None:
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# Only enable the media repo if either the media repo is enabled or the
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# current worker app is the media repo.
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if (
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self.root.server.enable_media_repo is False
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and config.get("worker_app") != "synapse.app.media_repository"
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):
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self.can_load_media_repo = False
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return
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else:
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self.can_load_media_repo = True
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# Whether this instance should be the one to run the background jobs to
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# e.g clean up old URL previews.
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self.media_instance_running_background_jobs = config.get(
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"media_instance_running_background_jobs",
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)
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self.max_upload_size = self.parse_size(config.get("max_upload_size", "50M"))
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self.max_image_pixels = self.parse_size(config.get("max_image_pixels", "32M"))
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self.max_spider_size = self.parse_size(config.get("max_spider_size", "10M"))
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self.prevent_media_downloads_from = config.get(
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"prevent_media_downloads_from", []
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)
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self.unused_expiration_time = self.parse_duration(
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config.get("unused_expiration_time", "24h")
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)
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self.max_pending_media_uploads = config.get("max_pending_media_uploads", 5)
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self.media_store_path = self.ensure_directory(
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config.get("media_store_path", "media_store")
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)
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backup_media_store_path = config.get("backup_media_store_path")
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synchronous_backup_media_store = config.get(
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"synchronous_backup_media_store", False
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)
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storage_providers = config.get("media_storage_providers", [])
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if backup_media_store_path:
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if storage_providers:
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raise ConfigError(
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"Cannot use both 'backup_media_store_path' and 'storage_providers'"
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)
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storage_providers = [
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{
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"module": "file_system",
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"store_local": True,
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"store_synchronous": synchronous_backup_media_store,
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"store_remote": True,
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"config": {"directory": backup_media_store_path},
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}
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]
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# This is a list of config that can be used to create the storage
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# providers. The entries are tuples of (Class, class_config,
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# MediaStorageProviderConfig), where Class is the class of the provider,
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# the class_config the config to pass to it, and
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# MediaStorageProviderConfig are options for StorageProviderWrapper.
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#
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# We don't create the storage providers here as not all workers need
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# them to be started.
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self.media_storage_providers: List[tuple] = []
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for i, provider_config in enumerate(storage_providers):
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# We special case the module "file_system" so as not to need to
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# expose FileStorageProviderBackend
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if (
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provider_config["module"] == "file_system"
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or provider_config["module"] == "synapse.rest.media.v1.storage_provider"
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):
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provider_config[
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"module"
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] = "synapse.media.storage_provider.FileStorageProviderBackend"
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provider_class, parsed_config = load_module(
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provider_config, ("media_storage_providers", "<item %i>" % i)
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)
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wrapper_config = MediaStorageProviderConfig(
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provider_config.get("store_local", False),
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provider_config.get("store_remote", False),
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provider_config.get("store_synchronous", False),
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)
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self.media_storage_providers.append(
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(provider_class, parsed_config, wrapper_config)
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)
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self.dynamic_thumbnails = config.get("dynamic_thumbnails", False)
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self.thumbnail_requirements = parse_thumbnail_requirements(
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config.get("thumbnail_sizes", DEFAULT_THUMBNAIL_SIZES)
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)
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self.url_preview_enabled = config.get("url_preview_enabled", False)
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if self.url_preview_enabled:
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check_requirements("url-preview")
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proxy_env = getproxies_environment()
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if "url_preview_ip_range_blacklist" not in config:
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if "http" not in proxy_env or "https" not in proxy_env:
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raise ConfigError(
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"For security, you must specify an explicit target IP address "
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"blacklist in url_preview_ip_range_blacklist for url previewing "
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"to work"
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)
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else:
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if "http" in proxy_env or "https" in proxy_env:
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logger.warning("".join(HTTP_PROXY_SET_WARNING))
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# we always block '0.0.0.0' and '::', which are supposed to be
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# unroutable addresses.
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self.url_preview_ip_range_blocklist = generate_ip_set(
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config["url_preview_ip_range_blacklist"],
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["0.0.0.0", "::"],
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config_path=("url_preview_ip_range_blacklist",),
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)
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self.url_preview_ip_range_allowlist = generate_ip_set(
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config.get("url_preview_ip_range_whitelist", ()),
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config_path=("url_preview_ip_range_whitelist",),
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)
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self.url_preview_url_blocklist = config.get("url_preview_url_blacklist", ())
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self.url_preview_accept_language = config.get(
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"url_preview_accept_language"
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) or ["en"]
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media_retention = config.get("media_retention") or {}
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self.media_retention_local_media_lifetime_ms = None
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local_media_lifetime = media_retention.get("local_media_lifetime")
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if local_media_lifetime is not None:
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self.media_retention_local_media_lifetime_ms = self.parse_duration(
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local_media_lifetime
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)
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self.media_retention_remote_media_lifetime_ms = None
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remote_media_lifetime = media_retention.get("remote_media_lifetime")
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if remote_media_lifetime is not None:
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self.media_retention_remote_media_lifetime_ms = self.parse_duration(
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remote_media_lifetime
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)
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def generate_config_section(self, data_dir_path: str, **kwargs: Any) -> str:
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assert data_dir_path is not None
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media_store = os.path.join(data_dir_path, "media_store")
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return f"media_store_path: {media_store}"
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