update_rss_feed: log effective URL after fetching

validate_url: treat scheme as case-insensitive

classes/rssutils.php

@@ -410,7 +410,10 @@ class RSSUtils {
 
 			$feed_data = trim($feed_data);
 
+			global $fetch_effective_url;
+
 			Debug::log("fetch done.", Debug::$LOG_VERBOSE);
+			Debug::log("effective URL (after redirects): " . clean($fetch_effective_url), Debug::$LOG_VERBOSE);
 			Debug::log("source last modified: " . $fetch_last_modified, Debug::$LOG_VERBOSE);
 
 			if ($feed_data && $fetch_last_modified != $stored_last_modified) {

include/functions.php

@@ -1980,14 +1980,14 @@
 		if (!$tokens['host'])
 			return false;
 
-		if (!in_array($tokens['scheme'], ['http', 'https']))
+		if (!in_array(strtolower($tokens['scheme']), ['http', 'https']))
 			return false;
 
 		if ($extended_filtering) {
 			if (!in_array($tokens['port'], [80, 443, '']))
 				return false;
 
-			if ($tokens['host'] == 'localhost' || $tokens['host'] == '::1' || strpos($tokens['host'], '127.') === 0)
+			if (strtolower($tokens['host']) == 'localhost' || $tokens['host'] == '::1' || strpos($tokens['host'], '127.') === 0)
 				return false;
 		}