When doing CAS logouts, support a baseUrl with schema and host specified.

library/Unl/Controller/Action/Authenticate.php

@@ -48,13 +48,17 @@ abstract class Unl_Controller_Action_Authenticate extends Unl_Controller_Action
         $this->_destroyUser(Zend_Auth::getInstance()->getIdentity());
         Zend_Auth::getInstance()->clearIdentity();
 
+        $baseUrl = Zend_Controller_Front::getInstance()->getBaseUrl();
+        if (parse_url($baseUrl, PHP_URL_SCHEME)) {
+            $returnUrl = $baseUrl;
+        } else {
             if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {
                 $returnUrl = 'https://';
             } else {
                 $returnUrl = 'http://';
             }
-        
-        $returnUrl .= $_SERVER['SERVER_NAME'] . Zend_Controller_Front::getInstance()->getBaseUrl();
+            $returnUrl .= $_SERVER['SERVER_NAME'] . $baseUrl;
+        }
         
         $logoutUrl = $this->_getCasAdapter()->getLogoutUrl($returnUrl);
         $this->_redirect($logoutUrl);