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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_Mail
  * @subpackage Protocol
  * @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_Mail_Protocol_Smtp
  */
 // require_once 'Zend/Mail/Protocol/Smtp.php';
 
 
 /**
  * Performs PLAIN authentication
  *
  * @category   Zend
  * @package    Zend_Mail
  * @subpackage Protocol
  * @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_Mail_Protocol_Smtp_Auth_Plain extends Zend_Mail_Protocol_Smtp
 {
     /**
      * PLAIN username
      *
      * @var string
      */
     protected $_username;
 
 
     /**
      * PLAIN password
      *
      * @var string
      */
     protected $_password;
 
 
     /**
      * Constructor.
      *
      * @param  string $host   (Default: 127.0.0.1)
      * @param  int    $port   (Default: null)
      * @param  array  $config Auth-specific parameters
      * @return void
      */
     public function __construct($host = '127.0.0.1', $port = null, $config = null)
     {
         if (is_array($config)) {
             if (isset($config['username'])) {
                 $this->_username = $config['username'];
             }
             if (isset($config['password'])) {
                 $this->_password = $config['password'];
             }
         }
 
         parent::__construct($host, $port, $config);
     }
 
 
     /**
      * Perform PLAIN authentication with supplied credentials
      *
      * @return void
      */
     public function auth()
     {
         // Ensure AUTH has not already been initiated.
         parent::auth();
 
         $this->_send('AUTH PLAIN');
         $this->_expect(334);
         $this->_send(base64_encode("\0" . $this->_username . "\0" . $this->_password));
         $this->_expect(235);
         $this->_auth = true;
     }
 }