library/Zend/InfoCard/Xml/Security/Transform/EnvelopedSignature.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_InfoCard
  17  * @subpackage Zend_InfoCard_Xml_Security
  18  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  19  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  20  * @version    $Id: EnvelopedSignature.php 16214 2009-06-21 19:34:03Z thomas $
  21  */
  22
  23 /**
  24  * Zend_InfoCard_Xml_Security_Transform_Interface
  25  */
  26 require_once 'Zend/InfoCard/Xml/Security/Transform/Interface.php';
  27
  28 /**
  29  * A object implementing the EnvelopedSignature XML Transform
  30  *
  31  * @category   Zend
  32  * @package    Zend_InfoCard
  33  * @subpackage Zend_InfoCard_Xml_Security
  34  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  35  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  36  */
  37 class Zend_InfoCard_Xml_Security_Transform_EnvelopedSignature
  38     implements Zend_InfoCard_Xml_Security_Transform_Interface
  39 {
  40     /**
  41      * Transforms the XML Document according to the EnvelopedSignature Transform
  42      *
  43      * @throws Zend_InfoCard_Xml_Security_Transform_Exception
  44      * @param string $strXMLData The input XML data
  45      * @return string the transformed XML data
  46      */
  47     public function transform($strXMLData)
  48     {
  49         $sxe = simplexml_load_string($strXMLData);
  50
  51         if(!$sxe->Signature) {
  52             require_once 'Zend/InfoCard/Xml/Security/Transform/Exception.php';
  53             throw new Zend_InfoCard_Xml_Security_Transform_Exception("Unable to locate Signature Block for EnvelopedSignature Transform");
  54         }
  55
  56         unset($sxe->Signature);
  57
  58         return $sxe->asXML();
  59     }
  60 }