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   1  <?php
   2  //

   3  // +----------------------------------------------------------------------+

   4  // |zen-cart Open Source E-commerce                                       |

   5  // +----------------------------------------------------------------------+

   6  // | Copyright (c) 2003 The zen-cart developers                           |

   7  // |                                                                      |   

   8  // | http://www.zen-cart.com/index.php                                    |   

   9  // |                                                                      |   

  10  // | Portions Copyright (c) 2003 osCommerce                               |

  11  // +----------------------------------------------------------------------+

  12  // | This source file is subject to version 2.0 of the GPL license,       |

  13  // | that is bundled with this package in the file LICENSE, and is        |

  14  // | available through the world-wide-web at the following url:           |

  15  // | http://www.zen-cart.com/license/2_0.txt.                             |

  16  // | If you did not receive a copy of the zen-cart license and are unable |

  17  // | to obtain it through the world-wide-web, please send a note to       |

  18  // | license@zen-cart.com so we can mail you a copy immediately.          |

  19  // +----------------------------------------------------------------------+

  20  // $Id: password_funcs.php 2386 2005-11-17 23:09:03Z drbyte $

  21  //

  22  
  23  ////

  24  // This function validates a plain text password with an encrpyted password

  25    function zen_validate_password($plain, $encrypted) {
  26      if (zen_not_null($plain) && zen_not_null($encrypted)) {
  27  // split apart the hash / salt

  28        $stack = explode(':', $encrypted);
  29  
  30        if (sizeof($stack) != 2) return false;
  31  
  32        if (md5($stack[1] . $plain) == $stack[0]) {
  33          return true;
  34        }
  35      }
  36  
  37      return false;
  38    }
  39  
  40  ////

  41  // This function makes a new password from a plaintext password. 

  42    function zen_encrypt_password($plain) {
  43      $password = '';
  44  
  45      for ($i=0; $i<10; $i++) {
  46        $password .= zen_rand();
  47      }
  48  
  49      $salt = substr(md5($password), 0, 2);
  50  
  51      $password = md5($salt . $plain) . ':' . $salt;
  52  
  53      return $password;
  54    }
  55  
  56  ////

  57  // This function comes up with a plaintext word. 

  58  // You can then pass this word over to zen_encrypt_password or another similar function

  59    function zen_create_random_value($length, $type = 'mixed') {
  60      if ( ($type != 'mixed') && ($type != 'chars') && ($type != 'digits')) return false;
  61  
  62      $rand_value = '';
  63      while (strlen($rand_value) < $length) {
  64        if ($type == 'digits') {
  65          $char = zen_rand(0,9);
  66        } else {
  67          $char = chr(zen_rand(0,255));
  68        }
  69        if ($type == 'mixed') {
  70          if (eregi('^[a-z0-9]$', $char)) $rand_value .= $char;
  71        } elseif ($type == 'chars') {
  72          if (eregi('^[a-z]$', $char)) $rand_value .= $char;
  73        } elseif ($type == 'digits') {
  74          if (ereg('^[0-9]$', $char)) $rand_value .= $char;
  75        }
  76      }
  77  
  78      return $rand_value;
  79    }
  80  ?>