diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/config/repository.py | 35 | ||||
| -rw-r--r-- | synapse/rest/media/v1/thumbnail_resource.py | 40 |
2 files changed, 66 insertions, 9 deletions
diff --git a/synapse/config/repository.py b/synapse/config/repository.py index 3c69dd325f..1033496bb4 100644 --- a/synapse/config/repository.py +++ b/synapse/config/repository.py @@ -42,6 +42,18 @@ THUMBNAIL_SIZE_YAML = """\ # method: %(method)s """ +# A map from the given media type to the type of thumbnail we should generate +# for it. +THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP = { + "image/jpeg": "jpeg", + "image/jpg": "jpeg", + "image/webp": "jpeg", + # Thumbnails can only be jpeg or png. We choose png thumbnails for gif + # because it can have transparency. + "image/gif": "png", + "image/png": "png", +} + HTTP_PROXY_SET_WARNING = """\ The Synapse config url_preview_ip_range_blacklist will be ignored as an HTTP(s) proxy is configured.""" @@ -79,13 +91,22 @@ def parse_thumbnail_requirements( width = size["width"] height = size["height"] method = size["method"] - jpeg_thumbnail = ThumbnailRequirement(width, height, method, "image/jpeg") - png_thumbnail = ThumbnailRequirement(width, height, method, "image/png") - requirements.setdefault("image/jpeg", []).append(jpeg_thumbnail) - requirements.setdefault("image/jpg", []).append(jpeg_thumbnail) - requirements.setdefault("image/webp", []).append(jpeg_thumbnail) - requirements.setdefault("image/gif", []).append(png_thumbnail) - requirements.setdefault("image/png", []).append(png_thumbnail) + + for format, thumbnail_format in THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP.items(): + requirement = requirements.setdefault(format, []) + if thumbnail_format == "jpeg": + requirement.append( + ThumbnailRequirement(width, height, method, "image/jpeg") + ) + elif thumbnail_format == "png": + requirement.append( + ThumbnailRequirement(width, height, method, "image/png") + ) + else: + raise Exception( + "Unknown thumbnail mapping from %s to %s. This is a Synapse problem, please report!" + % (format, thumbnail_format) + ) return { media_type: tuple(thumbnails) for media_type, thumbnails in requirements.items() } diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py index 2295adfaa7..5f725c7600 100644 --- a/synapse/rest/media/v1/thumbnail_resource.py +++ b/synapse/rest/media/v1/thumbnail_resource.py @@ -17,9 +17,11 @@ import logging from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple -from synapse.api.errors import SynapseError +from synapse.api.errors import Codes, SynapseError, cs_error +from synapse.config.repository import THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP from synapse.http.server import ( DirectServeJsonResource, + respond_with_json, set_corp_headers, set_cors_headers, ) @@ -309,6 +311,19 @@ class ThumbnailResource(DirectServeJsonResource): url_cache: True if this is from a URL cache. server_name: The server name, if this is a remote thumbnail. """ + logger.debug( + "_select_and_respond_with_thumbnail: media_id=%s desired=%sx%s (%s) thumbnail_infos=%s", + media_id, + desired_width, + desired_height, + desired_method, + thumbnail_infos, + ) + + # If `dynamic_thumbnails` is enabled, we expect Synapse to go down a + # different code path to handle it. + assert not self.dynamic_thumbnails + if thumbnail_infos: file_info = self._select_thumbnail( desired_width, @@ -384,8 +399,29 @@ class ThumbnailResource(DirectServeJsonResource): file_info.thumbnail.length, ) else: + # This might be because: + # 1. We can't create thumbnails for the given media (corrupted or + # unsupported file type), or + # 2. The thumbnailing process never ran or errored out initially + # when the media was first uploaded (these bugs should be + # reported and fixed). + # Note that we don't attempt to generate a thumbnail now because + # `dynamic_thumbnails` is disabled. logger.info("Failed to find any generated thumbnails") - respond_404(request) + + respond_with_json( + request, + 400, + cs_error( + "Cannot find any thumbnails for the requested media (%r). This might mean the media is not a supported_media_format=(%s) or that thumbnailing failed for some other reason. (Dynamic thumbnails are disabled on this server.)" + % ( + request.postpath, + ", ".join(THUMBNAIL_SUPPORTED_MEDIA_FORMAT_MAP.keys()), + ), + code=Codes.UNKNOWN, + ), + send_cors=True, + ) def _select_thumbnail( self, |