+ * @param DOMElement $feedEl root element of a loaded RSS feed
+ * @param array $hints additional discovery information passed from higher levels
+ * @fixme should this be marked public?
+ * @return Ostatus_profile
+ * @throws Exception
+ */
+ public static function ensureRssChannel($feedEl, $hints)
+ {
+ // Special-case for Posterous. They have some nice metadata in their
+ // posterous:author elements. We should use them instead of the channel.
+
+ $items = $feedEl->getElementsByTagName('item');
+
+ if ($items->length > 0) {
+ $item = $items->item(0);
+ $authorEl = ActivityUtils::child($item, ActivityObject::AUTHOR, ActivityObject::POSTEROUS);
+ if (!empty($authorEl)) {
+ $obj = ActivityObject::fromPosterousAuthor($authorEl);
+ // Posterous has multiple authors per feed, and multiple feeds
+ // per author. We check if this is the "main" feed for this author.
+ if (array_key_exists('profileurl', $hints) &&
+ !empty($obj->poco) &&
+ common_url_to_nickname($hints['profileurl']) == $obj->poco->preferredUsername) {
+ return self::ensureActivityObjectProfile($obj, $hints);
+ }
+ }
+ }
+
+ // @fixme we should check whether this feed has elements
+ // with different <author> or <dc:creator> elements, and... I dunno.
+ // Do something about that.
+
+ $obj = ActivityObject::fromRssChannel($feedEl);
+
+ return self::ensureActivityObjectProfile($obj, $hints);
+ }
+
+ /**