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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Amf
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /** @see Zend_Amf_Auth_Abstract */
 // require_once 'Zend/Amf/Auth/Abstract.php';
 
 /** @see Zend_Acl */
 // require_once 'Zend/Acl.php';
 
 /** @see Zend_Auth_Result */
 // require_once 'Zend/Auth/Result.php';
 
 /** @see Zend_Xml_Security */
 // require_once 'Zend/Xml/Security.php';
 
 /**
  * This class implements authentication against XML file with roles for Flex Builder.
  *
  * @package    Zend_Amf
  * @subpackage Adobe
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Amf_Adobe_Auth extends Zend_Amf_Auth_Abstract
 {
 
     /**
      * ACL for authorization
      *
      * @var Zend_Acl
      */
     protected $_acl;
 
     /**
      * Username/password array
      *
      * @var array
      */
     protected $_users = array();
 
     /**
      * Create auth adapter
      *
      * @param string $rolefile File containing XML with users and roles
      */
     public function __construct($rolefile)
     {
         $this->_acl = new Zend_Acl();
         $xml = Zend_Xml_Security::scanFile($rolefile);
 /*
 Roles file format:
  <roles>
    <role id=”admin”>
         <user name=”user1” password=”pwd”/>
     </role>
    <role id=”hr”>
         <user name=”user2” password=”pwd2”/>
     </role>
 </roles>
 */
         foreach($xml->role as $role) {
             $this->_acl->addRole(new Zend_Acl_Role((string)$role["id"]));
             foreach($role->user as $user) {
                 $this->_users[(string)$user["name"]] = array("password" => (string)$user["password"],
                                                              "role" => (string)$role["id"]);
             }
         }
     }
 
     /**
      * Get ACL with roles from XML file
      *
      * @return Zend_Acl
      */
     public function getAcl()
     {
         return $this->_acl;
     }
 
     /**
      * Perform authentication
      *
      * @throws Zend_Auth_Adapter_Exception
      * @return Zend_Auth_Result
      * @see Zend_Auth_Adapter_Interface#authenticate()
      */
     public function authenticate()
     {
         if (empty($this->_username) ||
             empty($this->_password)) {
             /**
              * @see Zend_Auth_Adapter_Exception
              */
             // require_once 'Zend/Auth/Adapter/Exception.php';
             throw new Zend_Auth_Adapter_Exception('Username/password should be set');
         }
 
         if(!isset($this->_users[$this->_username])) {
             return new Zend_Auth_Result(Zend_Auth_Result::FAILURE_IDENTITY_NOT_FOUND,
                 null,
                 array('Username not found')
                 );
         }
 
         $user = $this->_users[$this->_username];
         if($user["password"] != $this->_password) {
             return new Zend_Auth_Result(Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID,
                 null,
                 array('Authentication failed')
                 );
         }
 
         $id = new stdClass();
         $id->role = $user["role"];
         $id->name = $this->_username;
         return new Zend_Auth_Result(Zend_Auth_Result::SUCCESS, $id);
     }
 }