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1 <?php |
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2 /** |
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3 * Zend Framework |
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4 * |
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5 * LICENSE |
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6 * |
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7 * This source file is subject to the new BSD license that is bundled |
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8 * with this package in the file LICENSE.txt. |
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9 * It is also available through the world-wide-web at this URL: |
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10 * http://framework.zend.com/license/new-bsd |
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11 * If you did not receive a copy of the license and are unable to |
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12 * obtain it through the world-wide-web, please send an email |
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13 * to license@zend.com so we can send you a copy immediately. |
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14 * |
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15 * @category Zend |
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16 * @package Zend_Mail |
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17 * @subpackage Protocol |
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18 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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19 * @license http://framework.zend.com/license/new-bsd New BSD License |
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20 * @version $Id: Crammd5.php 22653 2010-07-22 18:41:39Z mabe $ |
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21 */ |
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22 |
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23 |
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24 /** |
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25 * @see Zend_Mail_Protocol_Smtp |
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26 */ |
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27 require_once 'Zend/Mail/Protocol/Smtp.php'; |
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28 |
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29 |
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30 /** |
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31 * Performs CRAM-MD5 authentication |
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32 * |
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33 * @category Zend |
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34 * @package Zend_Mail |
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35 * @subpackage Protocol |
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36 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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37 * @license http://framework.zend.com/license/new-bsd New BSD License |
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38 */ |
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39 class Zend_Mail_Protocol_Smtp_Auth_Crammd5 extends Zend_Mail_Protocol_Smtp |
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40 { |
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41 /** |
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42 * Constructor. |
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43 * |
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44 * @param string $host (Default: 127.0.0.1) |
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45 * @param int $port (Default: null) |
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46 * @param array $config Auth-specific parameters |
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47 * @return void |
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48 */ |
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49 public function __construct($host = '127.0.0.1', $port = null, $config = null) |
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50 { |
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51 if (is_array($config)) { |
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52 if (isset($config['username'])) { |
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53 $this->_username = $config['username']; |
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54 } |
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55 if (isset($config['password'])) { |
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56 $this->_password = $config['password']; |
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57 } |
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58 } |
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59 |
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60 parent::__construct($host, $port, $config); |
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61 } |
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62 |
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63 |
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64 /** |
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65 * @todo Perform CRAM-MD5 authentication with supplied credentials |
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66 * |
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67 * @return void |
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68 */ |
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69 public function auth() |
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70 { |
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71 // Ensure AUTH has not already been initiated. |
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72 parent::auth(); |
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73 |
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74 $this->_send('AUTH CRAM-MD5'); |
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75 $challenge = $this->_expect(334); |
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76 $challenge = base64_decode($challenge); |
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77 $digest = $this->_hmacMd5($this->_password, $challenge); |
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78 $this->_send(base64_encode($this->_username . ' ' . $digest)); |
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79 $this->_expect(235); |
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80 $this->_auth = true; |
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81 } |
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82 |
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83 |
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84 /** |
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85 * Prepare CRAM-MD5 response to server's ticket |
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86 * |
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87 * @param string $key Challenge key (usually password) |
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88 * @param string $data Challenge data |
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89 * @param string $block Length of blocks |
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90 * @return string |
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91 */ |
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92 protected function _hmacMd5($key, $data, $block = 64) |
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93 { |
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94 if (strlen($key) > 64) { |
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95 $key = pack('H32', md5($key)); |
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96 } elseif (strlen($key) < 64) { |
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97 $key = str_pad($key, $block, "\0"); |
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98 } |
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99 |
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100 $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64); |
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101 $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64); |
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102 |
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103 $inner = pack('H32', md5($k_ipad . $data)); |
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104 $digest = md5($k_opad . $inner); |
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105 |
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106 return $digest; |
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107 } |
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108 } |