<?php
// $Id: common.php,v 1.1 2008/09/25 00:08:44 nao-pon Exp $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  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 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //

if (!defined("XOOPS_MAINFILE_INCLUDED")) {
    exit();
} else {
    foreach (array('GLOBALS', '_SESSION', 'HTTP_SESSION_VARS', '_GET', 'HTTP_GET_VARS', '_POST', 'HTTP_POST_VARS', '_COOKIE', 'HTTP_COOKIE_VARS', '_REQUEST', '_SERVER', 'HTTP_SERVER_VARS', '_ENV', 'HTTP_ENV_VARS', '_FILES', 'HTTP_POST_FILES', 'xoopsDB', 'xoopsUser', 'xoopsUserId', 'xoopsUserGroups', 'xoopsUserIsAdmin', 'xoopsConfig', 'xoopsOption', 'xoopsModule', 'xoopsModuleConfig') as $bad_global) {
        if (isset($_REQUEST[$bad_global])) {
            header('Location: '.XOOPS_URL.'/');
            exit();
        }
    }
    // ############## Activate error handler ##############
    include_once XOOPS_ROOT_PATH . '/class/errorhandler.php';
    $xoopsErrorHandler =& XoopsErrorHandler::getInstance();
    // Turn on error handler by default (until config value obtained from DB)
    $xoopsErrorHandler->activate(true);

    define("XOOPS_SIDEBLOCK_LEFT",0);
    define("XOOPS_SIDEBLOCK_RIGHT",1);
    define("XOOPS_SIDEBLOCK_BOTH",2);
    define("XOOPS_CENTERBLOCK_LEFT",3);
    define("XOOPS_CENTERBLOCK_RIGHT",4);
    define("XOOPS_CENTERBLOCK_CENTER",5);
    define("XOOPS_CENTERBLOCK_ALL",6);
    define("XOOPS_BLOCK_INVISIBLE",0);
    define("XOOPS_BLOCK_VISIBLE",1);
    define("XOOPS_MATCH_START",0);
    define("XOOPS_MATCH_END",1);
    define("XOOPS_MATCH_EQUAL",2);
    define("XOOPS_MATCH_CONTAIN",3);
    define("SMARTY_DIR", XOOPS_ROOT_PATH."/class/smarty/");
    define("XOOPS_CACHE_PATH", XOOPS_ROOT_PATH."/cache");
    define("XOOPS_UPLOAD_PATH", XOOPS_ROOT_PATH."/uploads");
    define("XOOPS_THEME_PATH", XOOPS_ROOT_PATH."/themes");
    define("XOOPS_COMPILE_PATH", XOOPS_ROOT_PATH."/templates_c");
    define("XOOPS_THEME_URL", XOOPS_URL."/themes");
    define("XOOPS_UPLOAD_URL", XOOPS_URL."/uploads");
    set_magic_quotes_runtime(0);
    include_once XOOPS_ROOT_PATH.'/class/logger.php';
    $xoopsLogger =& XoopsLogger::instance();
    $xoopsLogger->startTime();
    if (!defined('XOOPS_XMLRPC')) {
        define('XOOPS_DB_CHKREF', 1);
    } else {
        define('XOOPS_DB_CHKREF', 0);
    }

    // ############## Include common functions file ##############
    include_once XOOPS_ROOT_PATH.'/include/functions.php';

    // ############# Set Query Words & Load HypCommonFunction Class #############
    include_once XOOPS_TRUST_PATH . '/class/hyp_common/preload/hyp_preload.php';
    $HypCommonPreLoad = @ new HypCommonPreLoad();
    $HypCommonPreLoad->preFilter();

    // #################### Connect to DB ##################
    require_once XOOPS_ROOT_PATH.'/class/database/databasefactory.php';
    if ($_SERVER['REQUEST_METHOD'] != 'POST' || !xoops_refcheck(XOOPS_DB_CHKREF)) {
        define('XOOPS_DB_PROXY', 1);
    }
    $xoopsDB =& XoopsDatabaseFactory::getDatabaseConnection();

    // ################# Include required files ##############
    require_once XOOPS_ROOT_PATH.'/kernel/object.php';
    require_once XOOPS_ROOT_PATH.'/class/criteria.php';
    require_once XOOPS_ROOT_PATH.'/class/token.php';

    // for xoops.org 2.0.10 compatibility
    require_once XOOPS_ROOT_PATH.'/class/xoopssecurity.php';
    $xoopsSecurity = new XoopsSecurity();

    // #################### Include text sanitizer ##################
    include_once XOOPS_ROOT_PATH."/class/module.textsanitizer.php";

    // ################# Load Config Settings ##############
    $config_handler =& xoops_gethandler('config');
    $xoopsConfig =& $config_handler->getConfigsByCat(XOOPS_CONF);

    // #################### Error reporting settings ##################
    error_reporting(0);

    if ($xoopsConfig['debug_mode'] == 1) {
        error_reporting(E_ALL);
    } else {
        // Turn off error handler
        $xoopsErrorHandler->activate(false);
    }

    if ($xoopsConfig['enable_badips'] == 1 && isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] != '') {
        foreach ($xoopsConfig['bad_ips'] as $bi) {
            if (!empty($bi) && preg_match("/".$bi."/", $_SERVER['REMOTE_ADDR'])) {
                exit();
            }
        }
    }
    unset($bi);
    unset($bad_ips);
    unset($xoopsConfig['badips']);

    // ################# Include version info file ##############
    include_once XOOPS_ROOT_PATH."/include/version.php";

    // for older versions...will be DEPRECATED!
    $xoopsConfig['xoops_url'] = XOOPS_URL;
    $xoopsConfig['root_path'] = XOOPS_ROOT_PATH."/";


    // #################### Include site-wide lang file ##################
    if ( file_exists(XOOPS_ROOT_PATH."/language/".$xoopsConfig['language']."/global.php") ) {
        include_once XOOPS_ROOT_PATH."/language/".$xoopsConfig['language']."/global.php";
    } else {
        include_once XOOPS_ROOT_PATH."/language/english/global.php";
    }

    // ################ Include page-specific lang file ################
    if (isset($xoopsOption['pagetype']) && false === strpos($xoopsOption['pagetype'], '.')) {
        if ( file_exists(XOOPS_ROOT_PATH."/language/".$xoopsConfig['language']."/".$xoopsOption['pagetype'].".php") ) {
            include_once XOOPS_ROOT_PATH."/language/".$xoopsConfig['language']."/".$xoopsOption['pagetype'].".php";
        } else {
            include_once XOOPS_ROOT_PATH."/language/english/".$xoopsOption['pagetype'].".php";
        }
    }
    $xoopsOption = array();

    if ( !defined("XOOPS_USE_MULTIBYTES") ) {
        define("XOOPS_USE_MULTIBYTES",0);
    }

    /**#@+
     * Host abstraction layer
     */
    if ( !isset($_SERVER['PATH_TRANSLATED']) && isset($_SERVER['SCRIPT_FILENAME']) ) {
        $_SERVER['PATH_TRANSLATED'] =& $_SERVER['SCRIPT_FILENAME'];     // For Apache CGI
    } elseif ( isset($_SERVER['PATH_TRANSLATED']) && !isset($_SERVER['SCRIPT_FILENAME']) ) {
        $_SERVER['SCRIPT_FILENAME'] =& $_SERVER['PATH_TRANSLATED'];     // For IIS/2K now I think :-(
    }

    if (empty($_SERVER['REQUEST_URI'])) {         // Not defined by IIS
        // Under some configs, IIS makes SCRIPT_NAME point to php.exe :-(
        if ( !( $_SERVER[ 'REQUEST_URI' ] = @$_SERVER['PHP_SELF'] ) ) {
            $_SERVER[ 'REQUEST_URI' ] = $_SERVER['SCRIPT_NAME'];
        }
        if ( isset( $_SERVER[ 'QUERY_STRING' ] ) ) {
            $_SERVER[ 'REQUEST_URI' ] .= '?' . $_SERVER[ 'QUERY_STRING' ];
        }
        
        // Guard for XSS string of PHP_SELF
        if(preg_match("/[\<\>\"\'\(\)]/",$_SERVER['REQUEST_URI']))
            die();
    }
    $xoopsRequestUri = $_SERVER[ 'REQUEST_URI' ];       // Deprecated (use the corrected $_SERVER variable now)
    /**#@-*/

    // ############## Login a user with a valid session ##############
    $xoopsUser = '';
    $xoopsUserIsAdmin = false;
    $member_handler =& xoops_gethandler('member');
    $sess_handler =& xoops_gethandler('session');
    if ($xoopsConfig['use_ssl'] && isset($_POST[$xoopsConfig['sslpost_name']]) && $_POST[$xoopsConfig['sslpost_name']] != '') {
        session_id($_POST[$xoopsConfig['sslpost_name']]);
    } elseif ($xoopsConfig['use_mysession'] && $xoopsConfig['session_name'] != '') {
        if (isset($_COOKIE[$xoopsConfig['session_name']])) {
            session_id($_COOKIE[$xoopsConfig['session_name']]);
        } else {
            // no custom session cookie set, destroy session if any
            $_SESSION = array();
            //session_destroy();
        }
        @ini_set('session.gc_maxlifetime', $xoopsConfig['session_expire'] * 60);
    }
    session_set_save_handler(array(&$sess_handler, 'open'), array(&$sess_handler, 'close'), array(&$sess_handler, 'read'), array(&$sess_handler, 'write'), array(&$sess_handler, 'destroy'), array(&$sess_handler, 'gc'));
    session_start();

    if (!empty($_SESSION['xoopsUserId'])) {
        $xoopsUser =& $member_handler->getUser($_SESSION['xoopsUserId']);
        if (!is_object($xoopsUser)) {
            $xoopsUser = '';
            $_SESSION = array();
        } else {
            if ($xoopsConfig['use_mysession'] && $xoopsConfig['session_name'] != '') {
                setcookie($xoopsConfig['session_name'], session_id(), time()+(60*$xoopsConfig['session_expire']), '/',  '', 0);
            }
            $xoopsUser->setGroups($_SESSION['xoopsUserGroups']);
            $xoopsUserIsAdmin = $xoopsUser->isAdmin();
        }
    }
    if (!empty($_POST['xoops_theme_select']) && in_array($_POST['xoops_theme_select'], $xoopsConfig['theme_set_allowed'])) {
        $xoopsConfig['theme_set'] = $_POST['xoops_theme_select'];
        $_SESSION['xoopsUserTheme'] = $_POST['xoops_theme_select'];
    } elseif (!empty($_SESSION['xoopsUserTheme']) && in_array($_SESSION['xoopsUserTheme'], $xoopsConfig['theme_set_allowed'])) {
        $xoopsConfig['theme_set'] = $_SESSION['xoopsUserTheme'];
    }

    if ($xoopsConfig['closesite'] == 1) {
        $allowed = false;
        if (is_object($xoopsUser)) {
            foreach ($xoopsUser->getGroups() as $group) {
                if (in_array($group, $xoopsConfig['closesite_okgrp']) || XOOPS_GROUP_ADMIN == $group) {
                    $allowed = true;
                    break;
                }
            }
        } elseif (!empty($_POST['xoops_login'])) {
            include_once XOOPS_ROOT_PATH.'/include/checklogin.php';
            exit();
        }
        if (!$allowed) {
            include_once XOOPS_ROOT_PATH.'/class/template.php';
            $xoopsTpl = new XoopsTpl();
            $xoopsTpl->assign(array('xoops_sitename' => htmlspecialchars($xoopsConfig['sitename']), 'xoops_themecss' => xoops_getcss(), 'xoops_imageurl' => XOOPS_THEME_URL.'/'.$xoopsConfig['theme_set'].'/', 'lang_login' => _LOGIN, 'lang_username' => _USERNAME, 'lang_password' => _PASSWORD, 'lang_siteclosemsg' => $xoopsConfig['closesite_text']));
            $xoopsTpl->xoops_setCaching(1);
            $xoopsTpl->display('db:system_siteclosed.html');
            exit();
        }
        unset($allowed, $group);
    }

    // ############# POST Filter with HypCommonPreLoad #############
    $HypCommonPreLoad->postFilter();

    if (file_exists('./xoops_version.php')) {
        $url_arr = explode('/',strstr($xoopsRequestUri,'/modules/'));
        $module_handler =& xoops_gethandler('module');
        $xoopsModule =& $module_handler->getByDirname($url_arr[2]);
        unset($url_arr);
        if (!$xoopsModule || !$xoopsModule->getVar('isactive')) {
            include_once XOOPS_ROOT_PATH."/header.php";
            echo "<h4>"._MODULENOEXIST."</h4>";
            include_once XOOPS_ROOT_PATH."/footer.php";
            exit();
        }
        $moduleperm_handler =& xoops_gethandler('groupperm');
        if ($xoopsUser) {
            if (!$moduleperm_handler->checkRight('module_read', $xoopsModule->getVar('mid'), $xoopsUser->getGroups())) {
                redirect_header(XOOPS_URL."/user.php",1,_NOPERM);
                exit();
            }
            $xoopsUserIsAdmin = $xoopsUser->isAdmin($xoopsModule->getVar('mid'));
        } else {
            if (!$moduleperm_handler->checkRight('module_read', $xoopsModule->getVar('mid'), XOOPS_GROUP_ANONYMOUS)) {
                redirect_header(XOOPS_URL."/user.php",1,_NOPERM);
                exit();
            }
        }
        if ( file_exists(XOOPS_ROOT_PATH."/modules/".$xoopsModule->getVar('dirname')."/language/".$xoopsConfig['language']."/main.php") ) {
            include_once XOOPS_ROOT_PATH."/modules/".$xoopsModule->getVar('dirname')."/language/".$xoopsConfig['language']."/main.php";
        } else {
            if ( file_exists(XOOPS_ROOT_PATH."/modules/".$xoopsModule->getVar('dirname')."/language/english/main.php") ) {
                include_once XOOPS_ROOT_PATH."/modules/".$xoopsModule->getVar('dirname')."/language/english/main.php";
            }
        }
        if ($xoopsModule->getVar('hasconfig') == 1 || $xoopsModule->getVar('hascomments') == 1 || $xoopsModule->getVar( 'hasnotification' ) == 1) {
            $xoopsModuleConfig =& $config_handler->getConfigsByCat(0, $xoopsModule->getVar('mid'));
        }
    } elseif($xoopsUser) {
        $xoopsUserIsAdmin = $xoopsUser->isAdmin(1);
    }
}
?>