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-rw-r--r--synapse/rest/media/v1/download_resource.py2
-rw-r--r--synapse/rest/media/v1/media_repository.py3
-rw-r--r--synapse/rest/media/v1/preview_url_resource.py2
-rw-r--r--synapse/rest/media/v1/thumbnail_resource.py4
4 files changed, 8 insertions, 3 deletions
diff --git a/synapse/rest/media/v1/download_resource.py b/synapse/rest/media/v1/download_resource.py
index 6788375e85..39a286b83c 100644
--- a/synapse/rest/media/v1/download_resource.py
+++ b/synapse/rest/media/v1/download_resource.py
@@ -66,7 +66,7 @@ class DownloadResource(Resource):
     @defer.inlineCallbacks
     def _respond_local_file(self, request, media_id, name):
         media_info = yield self.store.get_local_media(media_id)
-        if not media_info:
+        if not media_info or media_info["quarantined_by"]:
             respond_404(request)
             return
 
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index caca96c222..0718f75241 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -135,6 +135,8 @@ class MediaRepository(object):
             media_info = yield self._download_remote_file(
                 server_name, media_id
             )
+        elif media_info["quarantined_by"]:
+            raise NotFoundError()
         else:
             self.recently_accessed_remotes.add((server_name, media_id))
             yield self.store.update_cached_last_access_time(
@@ -184,6 +186,7 @@ class MediaRepository(object):
                     raise
                 except NotRetryingDestination:
                     logger.warn("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)
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 99760d622f..c680fddab5 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -434,6 +434,8 @@ def _calc_og(tree, media_uri):
                 for el in _iterate_over_text(tree.find("body"), *TAGS_TO_REMOVE)
             )
             og['og:description'] = summarize_paragraphs(text_nodes)
+    else:
+        og['og:description'] = summarize_paragraphs([og['og:description']])
 
     # TODO: delete the url downloads to stop diskfilling,
     # as we only ever cared about its OG
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index d8f54adc99..59b2c39b2f 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -81,7 +81,7 @@ class ThumbnailResource(Resource):
                                  method, m_type):
         media_info = yield self.store.get_local_media(media_id)
 
-        if not media_info:
+        if not media_info or media_info["quarantined_by"]:
             respond_404(request)
             return
 
@@ -117,7 +117,7 @@ class ThumbnailResource(Resource):
                                             desired_type):
         media_info = yield self.store.get_local_media(media_id)
 
-        if not media_info:
+        if not media_info or media_info["quarantined_by"]:
             respond_404(request)
             return