random_captcha_type.module in CAPTCHA Pack 6

File

random_captcha_type/random_captcha_type.module

<?php

/**
 * Implementation of a "meta CAPTCHA" which randomly picks a CAPTCHA type
 */

/**
 * Implementation of hook_help().
 */
function random_captcha_type_help($path, $arg) {
  switch ($path) {
    case 'admin/user/captcha/random_captcha_type':
      return '<p>' . t('This CAPTCHA type is a "meta" CAPTCHA type, which randomly picks one of the selected CAPTCHA types.') . '</p>';
  }
}

/**
 * Implementation of hook_menu().
 */
function random_captcha_type_menu() {
  $items = array();

  // add an administration tab for random_captcha_type
  $items['admin/user/captcha/random_captcha_type'] = array(
    'title' => 'Random CAPTCHA type',
    'file' => 'random_captcha_type.admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'random_captcha_type_settings_form',
    ),
    'access arguments' => array(
      'administer CAPTCHA settings',
    ),
    'type' => MENU_LOCAL_TASK,
  );
  return $items;
}

/**
 * Implementation of hook_captcha
 */
function random_captcha_type_captcha($op, $captcha_type = '', $captcha_sid = '') {
  switch ($op) {
    case 'list':
      require_once 'random_captcha_type.inc';
      $enabled_types = _random_captcha_type_get_enabled_types();
      if (count($enabled_types) < 2) {
        return;
      }
      return array(
        'Random CAPTCHA type',
      );
    case 'generate':
      if ($captcha_type == 'Random CAPTCHA type') {
        require_once 'random_captcha_type.inc';
        if (isset($_POST['random_captcha_type'])) {

          // If this is a POST request, we're possibly in a validation phase
          // so the CAPTCHA type should be the same as in the originating form
          $module_and_type = $_POST['random_captcha_type'];
        }
        else {

          // If not, just pick a random one
          $types = _random_captcha_type_get_enabled_types();
          $module_and_type = $types[array_rand($types)];
        }
        list($module, $type) = explode('/', $module_and_type);

        // Call the generate CAPTCHA hook
        $captcha = module_invoke($module, 'captcha', 'generate', $type, $captcha_sid);

        // Store the current CAPTCHA type so it can be recovered for
        // regenerating the form in the validation phase
        $captcha['form']['random_captcha_type'] = array(
          '#type' => 'hidden',
          '#value' => $module_and_type,
        );
        return $captcha;
      }
  }
}

Functions

Name	Description
random_captcha_type_captcha	Implementation of hook_captcha
random_captcha_type_help	Implementation of hook_help().
random_captcha_type_menu	Implementation of hook_menu().