sb_root_relative_urls-blacklist-1.diff

--- sb_root_relative_urls.php
+++ sb_root_relative_urls.php
@@ -116,6 +116,9 @@
         //This method is used for urls that can be acceptably reformatted into root-relative urls without causing issues
         //related to other deficiencies in the wp core.

+        if (MP_WP_Root_Relative_URLS::check_blacklist($url, 'http'))
+            return $url;
+
         if (self::$massage) {
             //massage back to absolute because we're rendering a feed and the platform mixes url procurment methods between the delivery methods
             //despite offering _rss specific filters
@@ -180,6 +183,22 @@
         return $o;
     }

+    static function check_blacklist($url, $str_prefix = false) {
+        $emc2_blacklist_urls = get_option('emc2_blacklist_urls');
+        if ($emc2_blacklist_urls != '') {
+            $emc2_blacklist_urls = explode("\n", $emc2_blacklist_urls);
+
+            foreach ($emc2_blacklist_urls as &$blacklist_url) {
+                if ($str_prefix && substr($blacklist_url, 0, strlen($str_prefix)) !== $str_prefix)
+                    continue;
+
+                if (stripos($url, trim($blacklist_url)) !== false)
+                    return true;
+            }
+        }
+        return false;
+    }
+
     static function init() {

         add_action('admin_init', array( 'MP_WP_Root_Relative_URLS', 'admin_settings_init' ));
@@ -187,7 +206,7 @@
         //Here we check the url blacklist to disable proper root relative urls, this helps with certain 3rd party
         //plugins / certain clients for rss feeds
         $cur_url = MP_WP_Root_Relative_URLS::dynamic_absolute_url(@$_SERVER['REQUEST_URI']);
-        if (stripos(get_option('emc2_blacklist_urls'), $cur_url) !== false) {
+        if (MP_WP_Root_Relative_URLS::check_blacklist($cur_url, '/')) {
             //for blacklists, create a dynamic but full absolute url instead
             self::$massage = true;
         }