Tweak the attachment handling for Hubzilla support

tasks.py

@@ -48,9 +48,9 @@ def process_new_activity(self, iri: str) -> None:
 
         tag_stream = False
         if activity.has_type(ap.ActivityType.ANNOUNCE):
-            tag_stream = True
             try:
                 activity.get_object()
+                tag_stream = True
             except NotAnActivityError:
                 # Most likely on OStatus notice
                 tag_stream = False
@@ -235,7 +235,10 @@ def cache_attachments(self, iri: str) -> None:
 
         if activity.has_type(ap.ActivityType.CREATE):
             for attachment in activity.get_object()._data.get("attachment", []):
-                if attachment.get("mediaType", "").startswith("image/"):
+                if (
+                    attachment.get("mediaType", "").startswith("image/")
+                    or attachment.get("type") == ap.ActivityType.IMAGE.value
+                ):
                     MEDIA_CACHE.cache(attachment["url"], Kind.ATTACHMENT)
 
         log.info(f"attachments cached for {iri}")

templates/utils.html

@@ -54,7 +54,7 @@
 	<ul>
 	{% endif %}
 	{% for a in obj.attachment %}
-	{% if a.mediaType.startswith("image/") %}
+    {% if (a.mediaType and a.mediaType.startswith("image/")) or (a.type and a.type == 'Image') %}
     <a href="{{ a.url | get_attachment_url(None) }}"><img src="{{a.url | get_attachment_url(720) }}" class="img-attachment"></a>
 	{% else %}
 	<li><a href="{{a.url }}" class="l">{% if a.filename %}{{ a.filename }}{% else %}{{ a.url }}{% endif %}</a></li>