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   1  <?php
   2  /**
   3  *
   4  * @package VC
   5  * @version $Id$
   6  * @copyright (c) 2006, 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  * Placeholder for autoload
  21  */
  22  if (!class_exists('phpbb_default_captcha'))
  23  {
  24      include($phpbb_root_path . 'includes/captcha/plugins/captcha_abstract.' . $phpEx);
  25  }
  26  
  27  /**
  28  * @package VC
  29  */
  30  class phpbb_captcha_gd extends phpbb_default_captcha
  31  {
  32  
  33      var $captcha_vars = array(
  34          'captcha_gd_x_grid'                => 'CAPTCHA_GD_X_GRID',
  35          'captcha_gd_y_grid'                => 'CAPTCHA_GD_Y_GRID',
  36          'captcha_gd_foreground_noise'    => 'CAPTCHA_GD_FOREGROUND_NOISE',
  37  //        'captcha_gd'                    => 'CAPTCHA_GD_PREVIEWED',
  38          'captcha_gd_wave'                => 'CAPTCHA_GD_WAVE',
  39          'captcha_gd_3d_noise'            => 'CAPTCHA_GD_3D_NOISE',
  40          'captcha_gd_fonts'                => 'CAPTCHA_GD_FONTS',
  41      );
  42  
  43  	function phpbb_captcha_gd()
  44      {
  45          global $phpbb_root_path, $phpEx;
  46  
  47          if (!class_exists('captcha'))
  48          {
  49              include($phpbb_root_path . 'includes/captcha/captcha_gd.' . $phpEx);
  50          }
  51      }
  52  
  53      function &get_instance()
  54      {
  55          $instance =& new phpbb_captcha_gd();
  56          return $instance;
  57      }
  58  
  59  	function is_available()
  60      {
  61          global $phpbb_root_path, $phpEx;
  62  
  63          if (@extension_loaded('gd'))
  64          {
  65              return true;
  66          }
  67  
  68          if (!function_exists('can_load_dll'))
  69          {
  70              include($phpbb_root_path . 'includes/functions_install.' . $phpEx);
  71          }
  72  
  73          return can_load_dll('gd');
  74      }
  75  
  76      /**
  77      *  API function
  78      */
  79  	function has_config()
  80      {
  81          return true;
  82      }
  83  
  84  	function get_name()
  85      {
  86          return 'CAPTCHA_GD';
  87      }
  88  
  89  	function get_class_name()
  90      {
  91          return 'phpbb_captcha_gd';
  92      }
  93  
  94  	function acp_page($id, &$module)
  95      {
  96          global $db, $user, $auth, $template;
  97          global $config, $phpbb_root_path, $phpbb_admin_path, $phpEx;
  98  
  99          $user->add_lang('acp/board');
 100  
 101          $config_vars = array(
 102              'enable_confirm'        => 'REG_ENABLE',
 103              'enable_post_confirm'    => 'POST_ENABLE',
 104              'confirm_refresh'        => 'CONFIRM_REFRESH',
 105              'captcha_gd'            => 'CAPTCHA_GD',
 106          );
 107  
 108          $module->tpl_name = 'captcha_gd_acp';
 109          $module->page_title = 'ACP_VC_SETTINGS';
 110          $form_key = 'acp_captcha';
 111          add_form_key($form_key);
 112  
 113          $submit = request_var('submit', '');
 114  
 115          if ($submit && check_form_key($form_key))
 116          {
 117              $captcha_vars = array_keys($this->captcha_vars);
 118              foreach ($captcha_vars as $captcha_var)
 119              {
 120                  $value = request_var($captcha_var, 0);
 121                  if ($value >= 0)
 122                  {
 123                      set_config($captcha_var, $value);
 124                  }
 125              }
 126  
 127              add_log('admin', 'LOG_CONFIG_VISUAL');
 128              trigger_error($user->lang['CONFIG_UPDATED'] . adm_back_link($module->u_action));
 129          }
 130          else if ($submit)
 131          {
 132              trigger_error($user->lang['FORM_INVALID'] . adm_back_link($module->u_action));
 133          }
 134          else
 135          {
 136              foreach ($this->captcha_vars as $captcha_var => $template_var)
 137              {
 138                  $var = (isset($_REQUEST[$captcha_var])) ? request_var($captcha_var, 0) : $config[$captcha_var];
 139                  $template->assign_var($template_var, $var);
 140              }
 141  
 142              $template->assign_vars(array(
 143                  'CAPTCHA_PREVIEW'    => $this->get_demo_template($id),
 144                  'CAPTCHA_NAME'        => $this->get_class_name(),
 145                  'U_ACTION'            => $module->u_action,
 146              ));
 147          }
 148      }
 149  
 150  	function execute_demo()
 151      {
 152          global $config;
 153  
 154          $config_old = $config;
 155          foreach ($this->captcha_vars as $captcha_var => $template_var)
 156          {
 157                  $config[$captcha_var] = request_var($captcha_var, (int) $config[$captcha_var]);
 158          }
 159          parent::execute_demo();
 160          $config = $config_old;
 161      }
 162  
 163  }
 164  
 165  ?>