<?php
/**
 * my little forum - a simple PHP and MySQL based internet forum that displays 
 * the messages in classical threaded view
 *
 * @author Mark Alexander Hoschek < alex at mylittleforum dot net >
 * @author Michael Lösler (https://github.com/loesler)
 * @author Heiko August (https://github.com/auge8472)
 * @copyright 2006-2018 Mark Alexander Hoschek
 * @version 2.4.24 (2020-10-12)
 * @link https://mylittleforum.net/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

define('IN_INDEX', true);
define('LANG_DIR', 'lang');
define('THEMES_DIR', 'themes');

session_start();

include('config/db_settings.php');
include('includes/functions.inc.php');
include('includes/main.inc.php');

require('modules/smarty/libs/Smarty.class.php');
$smarty                  = new Smarty;
$smarty->error_reporting = 'E_ALL & ~E_NOTICE';
$smarty->template_dir    = THEMES_DIR;
$smarty->assign('THEMES_DIR', THEMES_DIR);
$smarty->assign('CSRF_TOKEN', $_SESSION['csrf_token']);
$smarty->assign('FORUM_ADDRESS', rtrim($settings['forum_address'], "/"));
$smarty->compile_dir       = 'templates_c';
$smarty->config_dir        = LANG_DIR;
$smarty->config_overwrite  = false;
$smarty->config_booleanize = false;
if (isset($_SESSION[$settings['session_prefix'] . 'usersettings']['language']) && file_exists(LANG_DIR . '/' . $_SESSION[$settings['session_prefix'] . 'usersettings']['language'])) {
    $language_file = $_SESSION[$settings['session_prefix'] . 'usersettings']['language'];
} else {
    $language_file = $settings['language_file'];
}
$smarty->assign('language_file', $language_file);
$smarty->configLoad($language_file, 'default');
$lang = $smarty->getConfigVars();

define('CHARSET', $lang['charset']);
if ($lang['locale_charset'] != $lang['charset'])
    define('LOCALE_CHARSET', $lang['locale_charset']);
@ini_set('default_charset', $lang['charset']);
setlocale(LC_ALL, $lang['locale']);
setlocale(LC_NUMERIC, "C");

$smarty->assign('settings', $settings);

$smarty->assign('forum_time', format_time($lang['time_format'], TIMESTAMP + intval($time_difference) * 60));
if (isset($forum_time_zone))
    $smarty->assign('forum_time_zone', htmlspecialchars($forum_time_zone));

if (isset($_SESSION[$settings['session_prefix'] . 'usersettings']))
    $smarty->assign('usersettings', $_SESSION[$settings['session_prefix'] . 'usersettings']);
#$smarty->assign('category', $category);
if (isset($categories) and !empty($categories)) {
    $smarty->assign('categories', $categories);
    $smarty->assign('number_of_categories', count($categories) - 1);
}
if (isset($category_selection)) {
    $smarty->assign('category_selection', true);
}

$smarty->assign('total_postings', $total_postings);
$smarty->assign('total_spam', $total_spam);
$smarty->assign('total_threads', $total_threads);
$smarty->assign('registered_users', $registered_users);
if (isset($total_users_online)) {
    $smarty->assign('total_users_online', $total_users_online);
    $smarty->assign('unregistered_users_online', $unregistered_users_online);
    $smarty->assign('registered_users_online', $registered_users_online);
}

if (isset($_SESSION[$settings['session_prefix'] . 'user_id']) && isset($_SESSION[$settings['session_prefix'] . 'user_name'])) {
    $smarty->assign('user_id', $_SESSION[$settings['session_prefix'] . 'user_id']);
    $smarty->assign('user', htmlspecialchars($_SESSION[$settings['session_prefix'] . 'user_name']));
    $smarty->assign('user_type', intval($_SESSION[$settings['session_prefix'] . 'user_type']));
}
if (isset($_SESSION[$settings['session_prefix'] . 'user_type']) && $_SESSION[$settings['session_prefix'] . 'user_type'] == 1)
    $smarty->assign('mod', true);
if (isset($_SESSION[$settings['session_prefix'] . 'user_type']) && $_SESSION[$settings['session_prefix'] . 'user_type'] == 2)
    $smarty->assign('admin', true);
if (isset($_SESSION[$settings['session_prefix'] . 'usersettings']['newtime']))
    $smarty->assign('newtime', $_SESSION[$settings['session_prefix'] . 'usersettings']['newtime']);
if (isset($last_visit))
    $smarty->assign('last_visit', $last_visit);
if (isset($menu))
    $smarty->assign('menu', $menu);
if (isset($read))
    $smarty->assign('read', $read);

$mode = isset($_REQUEST['mode']) ? $_REQUEST['mode'] : '';

if ($settings['access_for_users_only'] == 1 && empty($_SESSION[$settings['session_prefix'] . 'user_id'])) {
    if (empty($mode) || $mode != 'account_locked' && $mode != 'register' && $mode != 'page' && $mode != 'js_defaults')
        $mode = 'login';
}
if ($settings['forum_enabled'] != 1 && (empty($_SESSION[$settings['session_prefix'] . 'user_type']) || $_SESSION[$settings['session_prefix'] . 'user_type'] < 2)) {
    if (empty($mode) || $mode != 'disabled' && $mode != 'rss' && $mode != 'login' && $mode != 'js_defaults')
        $mode = 'disabled';
}
if (empty($mode) && isset($_REQUEST['id']))
    $mode = 'entry';

if (empty($mode)) {
    // set user settings to default values if index page is requested
    $_SESSION[$settings['session_prefix'] . 'usersettings']['page'] = 1;
    if (isset($_SESSION[$settings['session_prefix'] . 'usersettings']['category_selection']))
        $_SESSION[$settings['session_prefix'] . 'usersettings']['category'] = -1;
    else
        $_SESSION[$settings['session_prefix'] . 'usersettings']['category'] = 0;
    $smarty->assign('top', true);
    $mode = 'index';
}

switch ($mode) {
    case 'index':
        include('includes/index.inc.php');
        break;
    case 'admin':
        include('includes/admin.inc.php');
        break;
    case 'bookmarks':
        include('includes/bookmark.inc.php');
        break;
    case 'contact':
        include('includes/contact.inc.php');
        break;
    case 'delete_cookie':
        include('includes/delete_cookie.inc.php');
        break;
    case 'login':
        include('includes/login.inc.php');
        break;
    case 'posting':
        include('includes/posting.inc.php');
        break;
    case 'register':
        include('includes/register.inc.php');
        break;
    case 'rss':
        include('includes/rss.inc.php');
        break;
    case 'search':
        include('includes/search.inc.php');
        break;
    case 'entry':
        include('includes/entry.inc.php');
        break;
    case 'thread':
        include('includes/thread.inc.php');
        break;
    case 'user':
        include('includes/user.inc.php');
        break;
    case 'page':
        include('includes/page.inc.php');
        break;
    case 'js_defaults':
        include('includes/js_defaults.inc.php');
        break;
    case 'upload_image':
        include('includes/upload_image.inc.php');
        break;
    case 'insert_flash':
        include('includes/insert_flash.inc.php');
        break;
    case 'avatar':
        include('includes/avatar.inc.php');
        break;
    case 'account_locked':
        include('includes/account_locked.inc.php');
        break;
    case 'disabled':
        include('includes/disabled.inc.php');
        break;
    default:
        $mode = 'index';
        include('includes/index.inc.php');
}
$smarty->assign('mode', $mode);

if (empty($template)) {
    header('Location: index.php');
    exit;
}

if ($mode == 'rss') {
    header("Content-Type: text/xml; charset=" . $lang['charset']);
} else {
    header('Cache-Control: private, no-cache="set-cookie"');
    header('Content-Type: text/html; charset=' . $lang['charset']);
    
    $currentURI = (isProtocolHTTPS() ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    if ($mode != 'login' && (!isset($_SESSION[$settings['session_prefix'] . 'last_visited_uri']) || $_SESSION[$settings['session_prefix'] . 'last_visited_uri'] != $currentURI))
        $_SESSION[$settings['session_prefix'] . 'last_visited_uri'] = $currentURI;
}

if (isset($_SESSION[$settings['session_prefix'] . 'usersettings']['theme']) && $smarty->templateExists($_SESSION[$settings['session_prefix'] . 'usersettings']['theme'] . '/' . $template)) {
    $theme = $_SESSION[$settings['session_prefix'] . 'usersettings']['theme'];
} else {
    $theme = $settings['theme'];
}
$smarty->assign('theme', $theme);
$smarty->display($theme . '/' . $template);
?>