fix usage of phpCAS::proxy(), re #1573

Merge request studip/studip!1074

app/controllers/cas.php

@@ -24,9 +24,11 @@ class CasController extends StudipController
         $pgt = Request::get('pgtId');
         $pgt_iou = Request::get('pgtIou');
         $cas_config = $GLOBALS['STUDIP_AUTH_CONFIG_CAS'];
-        $cas = phpCAS::proxy(CAS_VERSION_2_0, $cas_config['host'], $cas_config['port'], $cas_config['uri'], false);
-        $pgt_storage = new CAS_PGTStorage_Cache($cas);
+        phpCAS::proxy(CAS_VERSION_2_0, $cas_config['host'], $cas_config['port'], $cas_config['uri'], false);
+
+        $pgt_storage = new CAS_PGTStorage_Cache(phpCAS::getCasClient());
         $pgt_storage->write($pgt, $pgt_iou);
+
         $this->render_nothing();
     }
 }

lib/classes/auth_plugins/StudipAuthCAS.class.php

@@ -33,8 +33,8 @@ class StudipAuthCAS extends StudipAuthSSO
         if (Request::get('sso') === $this->plugin_name) {
             if ($this->proxy) {
                 URLHelper::setBaseUrl($GLOBALS['ABSOLUTE_URI_STUDIP']);
-                $cas = phpCAS::proxy(CAS_VERSION_2_0, $this->host, $this->port, $this->uri, false);
-                phpCAS::setPGTStorage(new CAS_PGTStorage_Cache($cas));
+                phpCAS::proxy(CAS_VERSION_2_0, $this->host, $this->port, $this->uri, false);
+                phpCAS::setPGTStorage(new CAS_PGTStorage_Cache(phpCAS::getCasClient()));
                 phpCAS::setFixedCallbackURL(URLHelper::getURL('dispatch.php/cas/proxy'));
             } else {
                 phpCAS::client(CAS_VERSION_2_0, $this->host, $this->port, $this->uri, false);

lib/classes/cas/CAS_PGTStorage_Cache.php

@@ -26,13 +26,13 @@ class CAS_PGTStorage_Cache extends CAS_PGTStorage_AbstractStorage
 
     /**
      * This method returns an informational string giving informations on the
-     * parameters of the storage.(used for debugging purposes).
+     * parameters of the storage (used for debugging purposes).
      *
      * @return an informational string.
      */
     public function getStorageInfo()
     {
-        return 'cache_class_file=' . Config::get()->cache_class_file;
+        return 'type=' . Config::get()->SYSTEMCACHE['type'];
     }
 
     /**