init.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 1999-2008 Kasper Skaarhoj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project 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.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script 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.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * TYPO3 Backend initialization
 *
 * This script is called by every backend script.
 * The script authenticates the backend user.
 * In addition this script also initializes the database and other stuff by including the script localconf.php
 *
 * IMPORTANT:
 * This script exits if no user is logged in!
 * If you want the script to return even if no user is logged in,
 * you must define the constant TYPO3_PROCEED_IF_NO_USER=1
 * before you include this script.
 *
 *
 * This script does the following:
 * - extracts and defines path's
 * - includes certain libraries
 * - authenticates the user
 * - sets the configuration values (localconf.php)
 * - includes tables.php that sets more values and possibly overrides others
 * - load the groupdata for the user and set filemounts / webmounts
 *
 * For a detailed description of this script, the scope of constants and variables in it,
 * please refer to the document "Inside TYPO3"
 *
 * $Id: init.php 4597 2008-12-23 17:16:20Z dmitry $
 * Revised for TYPO3 3.6 2/2003 by Kasper Skaarhoj
 *
 * @author  Kasper Skaarhoj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage core
 */

// *******************************
// Checking PHP version
// *******************************
if (version_compare(phpversion(), '5.2', '<'))  die ('TYPO3 requires PHP 5.2.0 or higher.');


// *******************************
// Set error reporting
// *******************************
error_reporting (E_ALL ^ E_NOTICE);

// *******************************
// Prevent any unwanted output that may corrupt AJAX/compression. Note: this does
// not interfeer with "die()" or "echo"+"exit()" messages!
// *******************************
ob_start();

// *******************************
// Define constants
// *******************************
define('TYPO3_OS', stristr(PHP_OS,'win')&&!stristr(PHP_OS,'darwin')?'WIN':'');
define('TYPO3_MODE','BE');
define('PATH_thisScript',str_replace('//','/', str_replace('\\','/', (php_sapi_name()=='cgi'||php_sapi_name()=='isapi' ||php_sapi_name()=='cgi-fcgi')&&($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED'])? ($_SERVER['ORIG_PATH_TRANSLATED']?$_SERVER['ORIG_PATH_TRANSLATED']:$_SERVER['PATH_TRANSLATED']):($_SERVER['ORIG_SCRIPT_FILENAME']?$_SERVER['ORIG_SCRIPT_FILENAME']:$_SERVER['SCRIPT_FILENAME']))));
define('TYPO3_mainDir', 'typo3/');      // This is the directory of the backend administration for the sites of this TYPO3 installation.


// *******************************
// Checking path
// *******************************
$temp_path = str_replace('\\','/',dirname(PATH_thisScript).'/');
$temp_modPath='';
    // If TYPO3_MOD_PATH is defined we must calculate the modPath since init.php must be included by a module
if (substr($temp_path,-strlen(TYPO3_mainDir))!=TYPO3_mainDir)   {
    if (defined('TYPO3_MOD_PATH'))  {
        if (substr($temp_path,-strlen(TYPO3_MOD_PATH))==TYPO3_MOD_PATH) {
            $temp_path=substr($temp_path,0,-strlen(TYPO3_MOD_PATH));
            $temp_modPath=TYPO3_MOD_PATH;
        } elseif (substr(TYPO3_MOD_PATH,0,13)=='../typo3conf/' && (substr(TYPO3_MOD_PATH,3)==substr($temp_path,-strlen(substr(TYPO3_MOD_PATH,3))))) {
            $temp_path = substr($temp_path,0,-strlen(substr(TYPO3_MOD_PATH,3))).TYPO3_mainDir;
            $temp_modPath=TYPO3_MOD_PATH;
        }
        if (!@is_dir($temp_path))   {
            $temp_path='';
        }
    }
}

// OUTPUT error message and exit if there are problems with the path. Otherwise define constants and continue.
if (!$temp_path || substr($temp_path,-strlen(TYPO3_mainDir))!=TYPO3_mainDir)    {   // This must be the case in order to proceed
    if (TYPO3_OS=='WIN')    {
        $thisPath_base = basename(substr($temp_path,-strlen(TYPO3_mainDir)));
        $mainPath_base = basename(TYPO3_mainDir);
        if (!strcasecmp($thisPath, $mainPath))  {   // Seems like the requested URL is not case-specific. This may happen on Windows only. -case. Otherwise, redirect to the correct URL. TYPO3_mainDir must be lower-case!!
            $script_name = (php_sapi_name()=='cgi'||php_sapi_name()=='cgi-fcgi')&&($_SERVER['ORIG_PATH_INFO']?$_SERVER['ORIG_PATH_INFO']:$_SERVER['PATH_INFO']) ? ($_SERVER['ORIG_PATH_INFO']?$_SERVER['ORIG_PATH_INFO']:$_SERVER['PATH_INFO']) : ($_SERVER['ORIG_SCRIPT_NAME']?$_SERVER['ORIG_SCRIPT_NAME']:$_SERVER['SCRIPT_NAME']);  // Copied from t3lib_div::getIndpEnv()
            header('Location: '.str_replace($thisPath_base, $mainPath_base, $script_name));
            exit;
        }
    }

    echo 'Error in init.php: Path to TYPO3 main dir could not be resolved correctly. <br /><br />';

    echo '<font color="red"><strong>';
    if (strstr($temp_path,'typo3_src')) {
        echo 'It seems you are trying to run the TYPO3 source libraries DIRECTLY! You cannot do that.<br />
        Please read the installation documents for more information.';
    } else {
        echo 'This happens if the last '.strlen(TYPO3_mainDir).' characters of this path, '.$temp_path.' ($temp_path), is NOT "'.TYPO3_mainDir.'" for some reason.<br />
        You may have a strange server configuration.
        Or maybe you didn\'t set constant TYPO3_MOD_PATH in your module?';
    }
    echo '</strong></font>';

    echo '<br /><br />If you want to debug this issue, please edit typo3/init.php of your TYPO3 source and search for the die() call right after this line (search for this text to find)...';

// Remove this line if you want to debug this problem a little more...
die();
    echo '<br /><br /><strong>If you expect any help from anybody on this issue, you should save this page as an html document and send it along with your request for help!</strong>';
    echo '<HR><pre>';
    print_r(array(
        'TYPO3_OS'=>TYPO3_OS,
        'PATH_thisScript'=>PATH_thisScript,
        'php_sapi_name()'=>php_sapi_name(),
        'TYPO3_MOD_PATH'=>TYPO3_MOD_PATH,
        'PATH_TRANSLATED'=>$_SERVER['PATH_TRANSLATED'],
        'SCRIPT_FILENAME'=>$_SERVER['SCRIPT_FILENAME']
    ));
    echo '</pre><HR>';
    phpinfo();
    exit;
} else {
    define('PATH_typo3', $temp_path);           // Abs. path of the TYPO3 admin dir (PATH_site + TYPO3_mainDir).
    define('PATH_typo3_mod', $temp_modPath);    // Relative path (from the PATH_typo3) to a properly configured module
    define('PATH_site', substr(PATH_typo3,0,-strlen(TYPO3_mainDir)));   // Abs. path to directory with the frontend (one above the admin-dir)
    $temp_path_t3lib = @is_dir(PATH_site.'t3lib/') ? PATH_site.'t3lib/' : PATH_typo3.'t3lib/';
    define('PATH_t3lib', $temp_path_t3lib);         // Abs. path to t3lib/ (general TYPO3 library) within the TYPO3 admin dir
    define('PATH_typo3conf', PATH_site.'typo3conf/');   // Abs. TYPO3 configuration path (local, not part of source)
}


// *************************************************
// t3lib_div + extention management class included
// *************************************************
require_once(PATH_t3lib.'class.t3lib_div.php');     // The standard-library is included
require_once(PATH_t3lib.'class.t3lib_extmgm.php');  // Extension API Management library included

// ****************************************************
// Include configuration (localconf + ext_localconf)
// ****************************************************
require(PATH_t3lib.'config_default.php');
if (!defined ('TYPO3_db'))  die ('The configuration file was not included.');

require_once(PATH_t3lib.'class.t3lib_db.php');      // The database library
/** @var TYPO3_DB t3lib_db */
$TYPO3_DB = t3lib_div::makeInstance('t3lib_DB');
$TYPO3_DB->debugOutput = $TYPO3_CONF_VARS['SYS']['sqlDebug'];

$CLIENT = t3lib_div::clientInfo();                  // $CLIENT includes information about the browser/user-agent
$PARSETIME_START = t3lib_div::milliseconds();       // Is set to the system time in milliseconds. This could be used to output script parsetime in the end of the script

// ***********************************
// Initializing the Caching System
// ***********************************

    // TODO implement autoloading so that we only require stuff we really need
require_once(PATH_t3lib . 'class.t3lib_cache.php');

require_once(PATH_t3lib . 'cache/class.t3lib_cache_abstractbackend.php');
require_once(PATH_t3lib . 'cache/class.t3lib_cache_abstractcache.php');
require_once(PATH_t3lib . 'cache/class.t3lib_cache_exception.php');
require_once(PATH_t3lib . 'cache/class.t3lib_cache_factory.php');
require_once(PATH_t3lib . 'cache/class.t3lib_cache_manager.php');
require_once(PATH_t3lib . 'cache/class.t3lib_cache_variablecache.php');

require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_classalreadyloaded.php');
require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_duplicateidentifier.php');
require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_invalidbackend.php');
require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_invalidcache.php');
require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_invaliddata.php');
require_once(PATH_t3lib . 'cache/exception/class.t3lib_cache_exception_nosuchcache.php');

$typo3CacheManager = t3lib_div::makeInstance('t3lib_cache_Manager');
$cacheFactoryClass = t3lib_div::makeInstanceClassName('t3lib_cache_Factory');
$typo3CacheFactory = new $cacheFactoryClass($typo3CacheManager);

t3lib_cache::initPageCache();
t3lib_cache::initPageSectionCache();
t3lib_cache::initContentHashCache();
unset($cacheFactoryClass);

// *************************
// CLI dispatch processing
// *************************
if (defined('TYPO3_cliMode') && TYPO3_cliMode && basename(PATH_thisScript)=='cli_dispatch.phpsh')   {
        // First, take out the first argument (cli-key)
    $temp_cliScriptPath = array_shift($_SERVER['argv']);
    $temp_cliKey = array_shift($_SERVER['argv']);
    array_unshift($_SERVER['argv'],$temp_cliScriptPath);

        // If cli_key was found in configuration, then set up the cliInclude path and module name:
    if ($temp_cliKey)   {
        if (is_array($TYPO3_CONF_VARS['SC_OPTIONS']['GLOBAL']['cliKeys'][$temp_cliKey]))    {
            define('TYPO3_cliInclude', t3lib_div::getFileAbsFileName($TYPO3_CONF_VARS['SC_OPTIONS']['GLOBAL']['cliKeys'][$temp_cliKey][0]));
            $MCONF['name'] = $TYPO3_CONF_VARS['SC_OPTIONS']['GLOBAL']['cliKeys'][$temp_cliKey][1];
        } else {
            echo "The supplied 'cliKey' was not valid. Please use one of the available from this list:\n\n";
            print_r(array_keys($TYPO3_CONF_VARS['SC_OPTIONS']['GLOBAL']['cliKeys']));
            echo "\n";
            exit;
        }
    } else {
        echo "Please supply a 'cliKey' as first argument. The following are available:\n\n";
        print_r($TYPO3_CONF_VARS['SC_OPTIONS']['GLOBAL']['cliKeys']);
        echo "\n";
        exit;
    }
}



// *********************
// Libraries included
// *********************
require_once(PATH_t3lib.'class.t3lib_userauth.php');
require_once(PATH_t3lib.'class.t3lib_userauthgroup.php');
require_once(PATH_t3lib.'class.t3lib_beuserauth.php');
require_once(PATH_t3lib.'class.t3lib_iconworks.php');
require_once(PATH_t3lib.'class.t3lib_befunc.php');
require_once(PATH_t3lib.'class.t3lib_cs.php');

// **********************
// Check Hardcoded lock on BE:
// **********************
if ($TYPO3_CONF_VARS['BE']['adminOnly'] < 0)    {
    header('Status: 404 Not Found');    // Send Not Found header - if the webserver can make use of it...
    header('Location: http://');    // Just point us away from here...
    exit;   // ... and exit good!
}

// **********************
// Check IP
// **********************
if (trim($TYPO3_CONF_VARS['BE']['IPmaskList']) && !(defined('TYPO3_cliMode') && TYPO3_cliMode)) {
    if (!t3lib_div::cmpIP(t3lib_div::getIndpEnv('REMOTE_ADDR'), $TYPO3_CONF_VARS['BE']['IPmaskList']))  {
        header('Status: 404 Not Found');    // Send Not Found header - if the webserver can make use of it...
        header('Location: http://');    // Just point us away from here...
        exit;   // ... and exit good!
    }
}


// **********************
// Check SSL (https)
// **********************
if (intval($TYPO3_CONF_VARS['BE']['lockSSL']) && !(defined('TYPO3_cliMode') && TYPO3_cliMode))  {
    if(intval($TYPO3_CONF_VARS['BE']['lockSSLPort'])) {
        $sslPortSuffix = ':'.intval($TYPO3_CONF_VARS['BE']['lockSSLPort']);
    } else {
        $sslPortSuffix = '';
    }
    if ($TYPO3_CONF_VARS['BE']['lockSSL'] == 3) {
        $requestStr = substr(t3lib_div::getIndpEnv('TYPO3_REQUEST_SCRIPT'), strlen(t3lib_div::getIndpEnv('TYPO3_SITE_URL').TYPO3_mainDir));
        if($requestStr == 'index.php' && !t3lib_div::getIndpEnv('TYPO3_SSL'))   {
            list(,$url) = explode('://',t3lib_div::getIndpEnv('TYPO3_REQUEST_URL'),2);
            list($server,$address) = explode('/',$url,2);
            header('Location: https://'.$server.$sslPortSuffix.'/'.$address);
            exit;
        }
    } elseif (!t3lib_div::getIndpEnv('TYPO3_SSL') ) {
        if ($TYPO3_CONF_VARS['BE']['lockSSL'] == 2) {
            list(,$url) = explode('://',t3lib_div::getIndpEnv('TYPO3_SITE_URL').TYPO3_mainDir,2);
            list($server,$address) = explode('/',$url,2);
            header('Location: https://'.$server.$sslPortSuffix.'/'.$address);
        } else {
            header('Status: 404 Not Found');    // Send Not Found header - if the webserver can make use of it...
            header('Location: http://');    // Just point us away from here...
        }
        exit;   // ... and exit good!
    }
}


// *******************************
// Checking environment
// *******************************
if (isset($_POST['GLOBALS']) || isset($_GET['GLOBALS']))    die('You cannot set the GLOBALS-array from outside the script.');
if (!get_magic_quotes_gpc())    {
    t3lib_div::addSlashesOnArray($_GET);
    t3lib_div::addSlashesOnArray($_POST);
    $HTTP_GET_VARS = $_GET;
    $HTTP_POST_VARS = $_POST;
}


// ********************************************
// Check if the install script should be run:
// ********************************************
if (defined('TYPO3_enterInstallScript') && TYPO3_enterInstallScript)    {
    if(!t3lib_extMgm::isLoaded('install')) {
        die('Install Tool is not loaded as an extension.<br/>You must add the key "install" to the list of installed extensions in typo3conf/localconf.php, $TYPO3_CONF_VARS["EXT"]["extList"].');
    }

    require_once(t3lib_extMgm::extPath('install').'mod/class.tx_install.php');
    $install_check = t3lib_div::makeInstance('tx_install');
    $install_check->allowUpdateLocalConf = 1;
    $install_check->init();
    exit;
}


// *************************
// Connect to the database
// *************************
if ($TYPO3_DB->sql_pconnect(TYPO3_db_host, TYPO3_db_username, TYPO3_db_password))   {
    if (!TYPO3_db)  {
        t3lib_BEfunc::typo3PrintError ('No database selected','Database Error');
        exit;
    } elseif (!$TYPO3_DB->sql_select_db(TYPO3_db))  {
        t3lib_BEfunc::typo3PrintError ('Cannot connect to the current database, "'.TYPO3_db.'"','Database Error');
        exit;
    }
} else {
    t3lib_BEfunc::typo3PrintError ('The current username, password or host was not accepted when the connection to the database was attempted to be established!','Database Error');
    exit;
}


// *******************************
// Checks for proper browser
// *******************************
if (!$CLIENT['BROWSER'] && !(defined('TYPO3_cliMode') && TYPO3_cliMode))    {
    t3lib_BEfunc::typo3PrintError ('Browser error','Your browser version looks incompatible with this TYPO3 version!',0);
    exit;
}


// ****************************************************
// Include tables customization (tables + ext_tables)
// ****************************************************
include (TYPO3_tables_script ? PATH_typo3conf.TYPO3_tables_script : PATH_t3lib.'stddb/tables.php');
    // Extension additions
if ($TYPO3_LOADED_EXT['_CACHEFILE'])    {
    include (PATH_typo3conf.$TYPO3_LOADED_EXT['_CACHEFILE'].'_ext_tables.php');
} else {
    include (PATH_t3lib.'stddb/load_ext_tables.php');
}
    // extScript
if (TYPO3_extTableDef_script)   {
    include (PATH_typo3conf.TYPO3_extTableDef_script);
}



// *******************************
// BackEnd User authentication
// *******************************
/*
    NOTICE:
    if constant TYPO3_PROCEED_IF_NO_USER is defined true (in the mainscript), this script will return even though a user did not log in!
*/
$BE_USER = t3lib_div::makeInstance('t3lib_beUserAuth'); // New backend user object
$BE_USER->warningEmail = $TYPO3_CONF_VARS['BE']['warning_email_addr'];
$BE_USER->lockIP = $TYPO3_CONF_VARS['BE']['lockIP'];
$BE_USER->auth_timeout_field = intval($TYPO3_CONF_VARS['BE']['sessionTimeout']);
$BE_USER->OS = TYPO3_OS;
$BE_USER->start();          // Object is initialized
$BE_USER->checkCLIuser();
$BE_USER->backendCheckLogin();  // Checking if there's a user logged in
$BE_USER->trackBeUser($TYPO3_CONF_VARS['BE']['trackBeUser']);   // Tracking backend user script hits

    // Setting the web- and filemount global vars:
$WEBMOUNTS = $BE_USER->returnWebmounts();       // ! WILL INCLUDE deleted mount pages as well!
$FILEMOUNTS = $BE_USER->returnFilemounts();

// *******************************
// $GLOBALS['LANG'] initialisation
// *******************************
require_once(PATH_typo3.'sysext/lang/lang.php');
$GLOBALS['LANG'] = t3lib_div::makeInstance('language');
$GLOBALS['LANG']->init($BE_USER->uc['lang']);


// ****************
// CLI processing
// ****************
if (defined('TYPO3_cliMode') && TYPO3_cliMode)  {
        // Status output:
    if (!strcmp($_SERVER['argv'][1],'status'))  {
        echo "Status of TYPO3 CLI script:\n\n";
        echo "Username [uid]: ".$BE_USER->user['username']." [".$BE_USER->user['uid']."]\n";
        echo "Database: ".TYPO3_db."\n";
        echo "PATH_site: ".PATH_site."\n";
        echo "\n";
        exit;
    }
}

// ****************
// compression
// ****************
ob_clean();
if (extension_loaded('zlib') && $TYPO3_CONF_VARS['BE']['compressionLevel']) {
    if (t3lib_div::testInt($TYPO3_CONF_VARS['BE']['compressionLevel'])) {
        @ini_set('zlib.output_compression_level', $TYPO3_CONF_VARS['BE']['compressionLevel']);
    }
    ob_start('ob_gzhandler');
}

?>

---