<?php
/**
 * DokuWiki Plugin Authdomain Limitation (Action Component)
 *
 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
 * @author  basteyyy <sebastian@34n.de>
 */

// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();

class action_plugin_authdomainlimitation_signup extends DokuWiki_Action_Plugin {

    /**
     * Registers a callback function for a given event
     *
     * @param Doku_Event_Handler $controller DokuWiki's event controller object
     * @return void
     */
    public function register(Doku_Event_Handler $controller) {

       $controller->register_hook('AUTH_USER_CHANGE', 'BEFORE', $this, 'handle_auth_user_change');
   
    }

    /**
     * [Custom event handler which performs action]
     *
     * @param Doku_Event $event  event object by reference
     * @param mixed      $param  [the parameters passed as fifth argument to register_hook() when this
     *                           handler was registered]
     * @return void
     */

    public function handle_auth_user_change(Doku_Event &$event, $param) {
    
      if ( $event->data['type'] !== 'create' ) {
        return true;
      }
      
      $domains = array_map(function($domain){
        return trim($domain);
      }, explode(';', $this->getConf('_domainWhiteList')));
      
      if ( in_array(trim( substr(strrchr($event->data['params'][3], "@"), 1)),$domains) ) {
        return true;
      }
      
      $event->preventDefault();
      $event->stopPropagation();
      $event->result = false;  
      
      msg($this->getConf('_domainlistErrorMEssage'), -1);
      return false;
    }

}

// vim:ts=4:sw=4:et: