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<?php

/**

*

* @package VC

* @copyright (c) 2008 phpBB Group

* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2

*

*/

/**

* @ignore

*/

if (!defined('IN_PHPBB'))

{

        exit;

}

/**

* A small class for 3.0.x (no autoloader in 3.0.x)

*

* @package VC

*/

class phpbb_captcha_factory

{

        /**

        * return an instance of class $name in file $name_plugin.php

        */

        function get_instance($name)

        {

                global $phpbb_root_path, $phpEx;

                $name = basename($name);

                if (!class_exists($name))

                {

                        include($phpbb_root_path . "includes/captcha/plugins/{$name}_plugin." . $phpEx);

                }

                $instance = call_user_func(array($name, 'get_instance'));

                return $instance;

        }

        /**

        * Call the garbage collector

        */

        function garbage_collect($name)

        {

                global $phpbb_root_path, $phpEx;

                $name = basename($name);

                if (!class_exists($name))

                {

                        include($phpbb_root_path . "includes/captcha/plugins/{$name}_plugin." . $phpEx);

                }

                call_user_func(array($name, 'garbage_collect'), 0);

        }

        /**

        * return a list of all discovered CAPTCHA plugins

        */

        function get_captcha_types()

        {

                global $phpbb_root_path, $phpEx, $phpbb_extension_manager;

                $captchas = array(

                        'available'                => array(),

                        'unavailable'        => array(),

                );

                $finder = $phpbb_extension_manager->get_finder();

                $captcha_plugin_classes = $finder

                        ->extension_directory('/captcha')

                        ->suffix('_plugin')

                        ->core_path('includes/captcha/plugins/')

                        ->get_classes();

                foreach ($captcha_plugin_classes as $class)

                {

                        // check if this class needs to be loaded in legacy mode

                        $old_class = preg_replace('/^phpbb_captcha_plugins_/', '', $class);

                        if (file_exists($phpbb_root_path . "includes/captcha/plugins/$old_class.$phpEx") && !class_exists($old_class))

                        {

                                include($phpbb_root_path . "includes/captcha/plugins/$old_class.$phpEx");

                                $class = preg_replace('/_plugin$/', '', $old_class);

                        }

                        if (call_user_func(array($class, 'is_available')))

                        {

                                $captchas['available'][$class] = call_user_func(array($class, 'get_name'));

                        }

                        else

                        {

                                $captchas['unavailable'][$class] = call_user_func(array($class, 'get_name'));

                        }

                }

                return $captchas;

        }

}