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   1  <?php
   2  /**
   3  *
   4  * @package VC
   5  * @version $Id$
   6  * @copyright (c) 2008 phpBB Group
   7  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
   8  *
   9  */
  10  
  11  /**
  12  * @ignore
  13  */
  14  if (!defined('IN_PHPBB'))
  15  {
  16      exit;
  17  }
  18  
  19  /**
  20  * A small class for 3.0.x (no autoloader in 3.0.x)
  21  *
  22  * @package VC
  23  */
  24  class phpbb_captcha_factory
  25  {
  26      /**
  27      * return an instance of class $name in file $name_plugin.php
  28      */
  29      function &get_instance($name)
  30      {
  31          global $phpbb_root_path, $phpEx;
  32  
  33          $name = basename($name);
  34          if (!class_exists($name))
  35          {
  36              include($phpbb_root_path . "includes/captcha/plugins/{$name}_plugin." . $phpEx);
  37          }
  38          $instance = call_user_func(array($name, 'get_instance'));
  39          return $instance;
  40      }
  41  
  42      /**
  43      * Call the garbage collector
  44      */
  45  	function garbage_collect($name)
  46      {
  47          global $phpbb_root_path, $phpEx;
  48  
  49          $name = basename($name);
  50          if (!class_exists($name))
  51          {
  52              include($phpbb_root_path . "includes/captcha/plugins/{$name}_plugin." . $phpEx);
  53          }
  54          call_user_func(array($name, 'garbage_collect'), 0);
  55      }
  56  
  57      /**
  58      * return a list of all discovered CAPTCHA plugins
  59      */
  60  	function get_captcha_types()
  61      {
  62          global $phpbb_root_path, $phpEx;
  63  
  64          $captchas = array(
  65              'available'        => array(),
  66              'unavailable'    => array(),
  67          );
  68  
  69          $dp = @opendir($phpbb_root_path . 'includes/captcha/plugins');
  70  
  71          if ($dp)
  72          {
  73              while (($file = readdir($dp)) !== false)
  74              {
  75                  if ((preg_match('#_plugin\.' . $phpEx . '$#', $file)))
  76                  {
  77                      $name = preg_replace('#^(.*?)_plugin\.' . $phpEx . '$#', '\1', $file);
  78                      if (!class_exists($name))
  79                      {
  80                          include($phpbb_root_path . "includes/captcha/plugins/$file");
  81                      }
  82  
  83                      if (call_user_func(array($name, 'is_available')))
  84                      {
  85                          $captchas['available'][$name] = call_user_func(array($name, 'get_name'));
  86                      }
  87                      else
  88                      {
  89                          $captchas['unavailable'][$name] = call_user_func(array($name, 'get_name'));
  90                      }
  91                  }
  92              }
  93              closedir($dp);
  94          }
  95  
  96          return $captchas;
  97      }
  98  }
  99  
 100  ?>