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<?php
/**
* @package JCE
* @copyright Copyright (c) 2009-2014 Ryan Demmer. All rights reserved.
* @license GNU/GPL 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* JCE is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
*/
defined('_JEXEC') or die('RESTRICTED');
abstract class WFToken {
/**
* Create a token-string
* From JSession::_createToken
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* @access protected
* @param int $length lenght of string
* @return string $id generated token
*/
private static function _createToken($length = 32) {
static $chars = '0123456789abcdef';
$max = strlen($chars) - 1;
$token = '';
$name = session_name();
for ($i = 0; $i < $length; ++$i) {
$token .= $chars[(rand(0, $max))];
}
return md5($token . $name);
}
public static function getToken() {
$session = JFactory::getSession();
$user = JFactory::getUser();
$token = $session->get('session.token', null, 'wf');
//create a token
if ($token === null) {
$token = self::_createToken(12);
$session->set('session.token', $token, 'wf');
}
if (method_exists('JApplication', 'getHash')) {
return 'wf' . JApplication::getHash($user->get('id', 0) . $token);
} else {
return 'wf' . JUtility::getHash($user->get('id', 0) . $token);
}
}
/**
* Check the received token
*/
public static function checkToken($method = 'POST') {
$token = self::getToken();
// check POST and GET for token
return JRequest::getVar($token, JRequest::getVar($token, '', 'GET', 'alnum'), 'POST', 'alnum');
}
}