<?php
/*
Plugin Name: URL Cloaker 
Plugin URI: http://www.nme.pl/url-cloaker-wp-plugin
Description: URL Cloaker
Version: 0.1
Author: mw@nme.pl
Author URI: http://www.nme.pl
*/
?>
<?php
/*  Copyright (c) 2010 nme.pl
 *
 *  Licensed under GNU General Public License v3
 *  http://www.gnu.org/licenses/gpl.html
 *
 *  If some of You will decide to add database support, hits counting or 
 *  wp-admin interface, I kindly ask to let me know. Take care!
 */
?>
<?php                          #  TYPES  #

define('PERMANENT_REDIRECT',301);      # PERMANENT_REDIRECT  (or numeric value: 301)
define('TEMPORARY_REDIRECT',302);      # TEMPORARY_REDIRECT  (or numeric value: 302)
define('LOCAL_CLOAK',1);               # LOCAL_CLOAK         (or numeric value: 1)
                                       # cloaking means that real link will not be shown

$redirects = array(          ###  SETTINGS  ###


  # source match                TYPE                              destination url

  # /u
  "^/u$" =>                     array(TEMPORARY_REDIRECT,         "/u/"),
  "^/u/(.*)$" =>                array(LOCAL_CLOAK,                "/category/u/$1"),
  # /hyde
  "^/hyde/?(.*)$" =>            array(LOCAL_CLOAK,                "/category/hyde/$1"),
  # /en
  "^/en/?(.*)$" =>              array(LOCAL_CLOAK,                "/category/en/$1"),
  # YT: 3D Projections on Buildings
  "^/ub5/?$" =>                 array(TEMPORARY_REDIRECT,        "http://www.youtube.com/watch?v=ihQk2kqPyKU"),
  # /video/yamaha
  "^/ymh/?$" =>                 array(TEMPORARY_REDIRECT,        "/video/yamaha/"),
  # Koniec anonimowosci w Internecie
  "^/zu/?$" =>                  array(TEMPORARY_REDIRECT,        "/2009/08/koniec-anonimowosci-w-internecie/"),


);                             #  NO NEED TO CHANGE ANYTHING BELOW  #

function url_cloaker()
{
    global $redirects;
    $src_url = $_SERVER['REQUEST_URI'];
    foreach ($redirects as $src => $dst) {
        $src = str_replace('/','\/',$src);
        if (preg_match('/'.$src.'/',$src_url)) {
            #__d('Matched: '.$src);
            $dst_url = preg_replace('/'.$src.'/', $dst[1], $src_url);
            switch ($dst[0]) {
                case PERMANENT_REDIRECT:
                    wp_redirect($dst_url, PERMANENT_REDIRECT);
                    exit;
                case TEMPORARY_REDIRECT:
                    wp_redirect($dst_url, TEMPORARY_REDIRECT);
                    exit;
                case LOCAL_CLOAK:
                    $_SERVER['REQUEST_URI'] = $dst_url;
                    break;
            }
        }
    }
}

add_action('init', 'url_cloaker');

?>