/zend/classes/Zend/Mail/Protocol/Smtp/Auth/Crammd5.php
PHP | 108 lines | 40 code | 13 blank | 55 comment | 4 complexity | ec0d12ba10cc242b945ac4dfd210cc78 MD5 | raw file
Possible License(s): LGPL-2.1, GPL-2.0
- <?php defined('SYSPATH') OR die('No direct script access.');
- /**
- * 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) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @version $Id: Crammd5.php 23775 2011-03-01 17:25:24Z ralph $
- */
- /**
- * @see Zend_Mail_Protocol_Smtp
- */
- // require_once 'Zend/Mail/Protocol/Smtp.php';
- /**
- * Performs CRAM-MD5 authentication
- *
- * @category Zend
- * @package Zend_Mail
- * @subpackage Protocol
- * @copyright Copyright (c) 2005-2011 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_Crammd5 extends Zend_Mail_Protocol_Smtp
- {
- /**
- * 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);
- }
- /**
- * @todo Perform CRAM-MD5 authentication with supplied credentials
- *
- * @return void
- */
- public function auth()
- {
- // Ensure AUTH has not already been initiated.
- parent::auth();
- $this->_send('AUTH CRAM-MD5');
- $challenge = $this->_expect(334);
- $challenge = base64_decode($challenge);
- $digest = $this->_hmacMd5($this->_password, $challenge);
- $this->_send(base64_encode($this->_username . ' ' . $digest));
- $this->_expect(235);
- $this->_auth = true;
- }
- /**
- * Prepare CRAM-MD5 response to server's ticket
- *
- * @param string $key Challenge key (usually password)
- * @param string $data Challenge data
- * @param string $block Length of blocks
- * @return string
- */
- protected function _hmacMd5($key, $data, $block = 64)
- {
- if (strlen($key) > 64) {
- $key = pack('H32', md5($key));
- } elseif (strlen($key) < 64) {
- $key = str_pad($key, $block, "\0");
- }
- $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64);
- $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64);
- $inner = pack('H32', md5($k_ipad . $data));
- $digest = md5($k_opad . $inner);
- return $digest;
- }
- }