set_meta.php

<?php
// The source code packaged with this file is Free Software, Copyright (C) 2005 by
// Ricardo Galli <gallir at uib dot es>.
// It's licensed under the AFFERO GENERAL PUBLIC LICENSE unless stated otherwise.
// You can get copies of the licenses here:
// 		http://www.affero.org/oagpl.html
// AFFERO GENERAL PUBLIC LICENSE is also included in the file called "COPYING".

require_once __DIR__.'/../config.php';

header('Content-Type: text/plain; charset=UTF-8');

$user = intval($_REQUEST['type']);
if ($user != $current_user->user_id) {
    error(_('usuario incorrecto'));
}

$meta_src = $meta_new = intval($_REQUEST['id']);
if ($meta_new == 0) {
    // expire the cookie
    setcookie("mnm_user_meta", '', time()-3600, $globals['base_url']);
} else {
    $meta_uri = $db->get_var("select category_uri from categories where category_id = '$meta_new' and category_parent = 0");
    if (empty($meta_uri)) {
        error(_('meta incorrecta'). " $meta_new");
    }
    if ($meta_uri == $_COOKIE['mnm_user_meta']) {
        setcookie("mnm_user_meta", '', time()-3600, $globals['base_url']);
        $meta_new = 0;
    } else {
        $expiration = time() + 3600000; // Valid for 1000 hours
        setcookie("mnm_user_meta", $meta_uri, $expiration, $globals['base_url']);
    }
}

echo meta_teaser($meta_src, $meta_new);

function error($mess)
{
    echo "ERROR: $mess\n";
    die;
}