limesurvey_ynh/sources/application/core/LSWebUser.php

<?php 
    Yii::import('application.helpers.Hash', true);

    class LSWebUser extends CWebUser
    {
        protected $sessionVariable = 'LSWebUser';
        
        
        public function __construct() 
        {
            $this->loginUrl = Yii::app()->createUrl('admin/authentication', array('sa' => 'login'));
            
            // Try to fix missing language in plugin controller
            Yii::import('application.libraries.Limesurvey_lang');
            if (empty(Yii::app()->session['adminlang'])) 
            {
                 Yii::app()->session["adminlang"] = Yii::app()->getConfig("defaultlang");
            }
               
            $lang = new Limesurvey_lang(Yii::app()->session['adminlang']);
            Yii::app()->setLang($lang);
        }

        public function checkAccess($operation, $params = array(), $allowCaching = true)
        {
            if ($operation == 'administrator')
            {
                return Permission::model()->hasGlobalPermission('superadmin', 'read');
            }
            else
            {
                return parent::checkAccess($operation, $params, $allowCaching);
            }
            
        }

        public function getStateKeyPrefix() 
        {
            return $this->sessionVariable;
        }
        
        
        public function setFlash($key, $value, $defaultValue = null) {
            $this->setState("flash.$key", $value, $defaultValue);
        }
        public function hasFlash($key) {
            $this->hasState("flash.$key");
        }
        
        public function getFlashes($delete = true)
       	{
            $result = $this->getState('flash', array());
            $this->removeState('flash');
            return $result;
        }
        
        public function getState($key, $defaultValue = null) 
        {
            if (!isset($_SESSION[$this->sessionVariable]) || !Hash::check($_SESSION[$this->sessionVariable], $key))
            {
                return $defaultValue;
            }
            else
            {
                return Hash::get($_SESSION[$this->sessionVariable], $key);
            }
        }
        
        /**
         * Removes a state variable.
         * @param string $key
         */
        public function removeState($key)
        {
            $this->setState($key, null);
        }

        public function setState($key, $value, $defaultValue = null) 
        {
            $current = isset($_SESSION[$this->sessionVariable]) ? $_SESSION[$this->sessionVariable] : array();
            if($value === $defaultValue)
            {
                $_SESSION[$this->sessionVariable] = Hash::remove($current, $key);
            }
            else
            {
                $_SESSION[$this->sessionVariable] = Hash::insert($current, $key, $value);
            }
                
            
        }

        public function hasState($key) 
        {
            return isset($_SESSION[$this->sessionVariable]) && Hash::check($_SESSION[$this->sessionVariable], $key);
        }
        
    }
?>