include/inc.header.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2005 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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.                      |
        |                                                                             |
        | 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. |
        +-----------------------------------------------------------------------------+
*/

// get pear
include("include/inc.get_pear.php");

//include class.util first to start StopWatch
require_once "classes/class.ilUtil.php";
require_once "classes/class.ilBenchmark.php";
$ilBench =& new ilBenchmark();
$GLOBALS['ilBench'] =& $ilBench;
$ilBench->start("Core", "HeaderInclude");

// start the StopWatch
$t_pagestart = ilUtil::StopWatch();

$ilBench->start("Core", "HeaderInclude_IncludeFiles");

//include files from PEAR
require_once "PEAR.php";
require_once "DB.php";
require_once "Auth/Auth.php";

// memory usage at this point (2005-02-09): ~781KB)
//echo "<br>memory1:".memory_get_usage()."<br>";

// wrapper for php 4.3.2 & higher
@include_once "HTML/ITX.php";

if (!class_exists("IntegratedTemplateExtension"))
{
        include_once "HTML/Template/ITX.php";
        //include_once "classes/class.ilTemplate2.php";
        include_once "classes/class.ilTemplateHTMLITX.php";
}
else
{
        //include_once "classes/class.ilTemplate.php";
        include_once "classes/class.ilTemplateITX.php";
}
require_once "classes/class.ilTemplate.php";

//include classes and function libraries
require_once "include/inc.db_session_handler.php";
require_once "classes/class.ilIniFile.php";
require_once "classes/class.ilDBx.php";
require_once "classes/class.ilShibboleth.php";
require_once "classes/class.ilias.php";
require_once "classes/class.ilObjUser.php";
require_once "classes/class.ilFormat.php";
require_once "classes/class.ilSaxParser.php";
require_once "classes/class.ilObjectDefinition.php";
require_once "classes/class.ilStyleDefinition.php";
require_once "classes/class.perm.php";
require_once "classes/class.ilTree.php";
require_once "classes/class.ilLanguage.php";
require_once "classes/class.ilLog.php";
require_once "classes/class.ilMailbox.php";
require_once "classes/class.ilCtrl.php";
require_once "classes/class.ilConditionHandler.php";
require_once "classes/class.ilBrowser.php";
require_once "classes/class.ilFrameTargetInfo.php";
require_once "Services/Help/classes/class.ilHelp.php";
require_once "include/inc.ilias_version.php";

//include role based access control system
require_once "Services/AccessControl/classes/class.ilAccessHandler.php";
require_once "classes/class.ilRbacAdmin.php";
require_once "classes/class.ilRbacSystem.php";
require_once "classes/class.ilRbacReview.php";

// include object_data cache
require_once "classes/class.ilObjectDataCache.php";

require_once 'Services/Tracking/classes/class.ilOnlineTracking.php';

// memory usage at this point (2005-02-09): ~3MB)
//echo "<br>memory2:".memory_get_usage()."<br>";

// ### AA 03.10.29 added new LocatorGUI class ###
//include LocatorGUI
require_once "classes/class.ilLocatorGUI.php";

// include error_handling
require_once "classes/class.ilErrorHandling.php";

$ilBench->stop("Core", "HeaderInclude_IncludeFiles");

// remove unsafe characters from _GET
if (is_array($_GET))
{
        foreach($_GET as $k => $v)
        {
                if (!in_array($k, array("file")))
                {
                        $_GET[$k] = str_replace(array("\x00", "\n", "\r", "\\", "'", '"', "\x1a"), "", $v);
                }
                
                // this one is for XSS of any kind
                $_GET[$k] = strip_tags($_GET[$k]);
        }
}


$ilBench->start("Core", "HeaderInclude_GetErrorHandler");
$ilErr = new ilErrorHandling();
$GLOBALS['ilErr'] =& $ilErr;
$ilErr->setErrorHandling(PEAR_ERROR_CALLBACK,array($ilErr,'errorHandler'));
$ilBench->stop("Core", "HeaderInclude_GetErrorHandler");

// load main class
$ilBench->start("Core", "HeaderInclude_GetILIASObject");
$ilias =& new ILIAS($_COOKIE["ilClientId"]);
$GLOBALS['ilias'] =& $ilias;
$ilBench->stop("Core", "HeaderInclude_GetILIASObject");

// trace function calls in debug mode
if (DEVMODE)
{
        if (function_exists("xdebug_start_trace"))
        {
                //xdebug_start_trace("/tmp/test.txt");
        }
}


require_once './classes/class.ilHTTPS.php';

$https =& new ilHTTPS();
$GLOBALS['https'] =& $https;
$https->checkPort();

/*
if (!db_set_save_handler())
{
        $message = "Please turn off Safe mode OR set session.save_handler to \"user\" in your php.ini";
        $ilias->raiseError($message, $ilias->error_obj->WARNING);
}*/

// Start object_data cache
$ilObjDataCache = new ilObjectDataCache();
$GLOBALS['ilObjDataCache'] =& $ilObjDataCache;


// LOAD OLD POST VARS IF ERROR HANDLER 'MESSAGE' WAS CALLED
if ($_SESSION["message"])
{
        $_POST = $_SESSION["post_vars"];
}

// put debugging functions here
//if (DEBUG)
//{
        include_once "include/inc.debug.php";
//}

// start logging
$log = new ilLog(ILIAS_LOG_DIR,ILIAS_LOG_FILE,$ilias->getClientId(),ILIAS_LOG_ENABLED,ILIAS_LOG_LEVEL);
$GLOBALS['log'] =& $log;
$ilLog =& $log;
$GLOBALS['ilLog'] =& $ilLog;

//echo "1-".$ilias->account->skin."-";

//authenticate & start session
PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, array($ilErr, "errorHandler"));
$ilBench->start("Core", "HeaderInclude_Authentication");
$ilias->auth->start();
$ilias->setAuthError($ilErr->getLastError());
$ilBench->stop("Core", "HeaderInclude_Authentication");


// force login ; workaround for hsu
if ($_GET["cmd"] == "force_login")
{
        $ilias->auth->logout();
        $_SESSION["AccountId"] = "";
        $ilias->auth->start();
        $ilias->setAuthError($ilErr->getLastError());
}

// load object definitions
$ilBench->start("Core", "HeaderInclude_getObjectDefinitions");
$objDefinition = new ilObjectDefinition();
$GLOBALS['objDefinition'] =& $objDefinition;
$objDefinition->startParsing();
$ilBench->stop("Core", "HeaderInclude_getObjectDefinitions");


// current user account
$ilBench->start("Core", "HeaderInclude_getCurrentUser");
$ilias->account = new ilObjUser();
$ilBench->stop("Core", "HeaderInclude_getCurrentUser");

// create references for subobjects in ilias object
$ilUser =& $ilias->account;
$GLOBALS['ilUser'] =& $ilias->account;
$ilCtrl = new ilCtrl();
$GLOBALS['ilCtrl'] =& $ilCtrl;

//but in login.php and index.php don't check for authentication
$script = substr(strrchr($_SERVER["PHP_SELF"],"/"),1);

// set theme for login
if (in_array($script, array("login.php", "register.php", "view_usr_agreement.php")))
{
        // load style definitions
        $ilBench->start("Core", "HeaderInclude_getStyleDefinitions");
        $styleDefinition = new ilStyleDefinition();
        $GLOBALS['styleDefinition'] =& $styleDefinition;
        $styleDefinition->startParsing();
        $ilBench->stop("Core", "HeaderInclude_getStyleDefinitions");
        
        if ($_GET['skin']  && $_GET['style'])
        {
                include_once("classes/class.ilObjStyleSettings.php");
                if ($styleDefinition->styleExists($_GET['skin'], $_GET['style']) &&
                        ilObjStyleSettings::_lookupActivatedStyle($_GET['skin'], $_GET['style']))
                {
                        $_SESSION['skin'] = $_GET['skin'];
                        $_SESSION['style'] = $_GET['style'];
                }
        }
        if ($_SESSION['skin'] && $_SESSION['style'])
        {
                include_once("classes/class.ilObjStyleSettings.php");
                if ($styleDefinition->styleExists($_SESSION['skin'], $_SESSION['style']) &&
                        ilObjStyleSettings::_lookupActivatedStyle($_SESSION['skin'], $_SESSION['style']))
                {
                        $ilias->account->skin = $_SESSION['skin'];
                        $ilias->account->prefs['style'] = $_SESSION['style'];
                }
        }
}


// check ilias 2 password, if authentication failed
// only if AUTH_LOCAL
if (AUTH_CURRENT == AUTH_LOCAL && !$ilias->auth->getAuth() && $script == "login.php" && $_POST["username"] != "")
//if (!$ilias->auth->getAuth() && $script == "login.php" && $_POST["username"] != "")
{
        if (ilObjUser::_lookupHasIlias2Password($_POST["username"]))
        {
                if (ilObjUser::_switchToIlias3Password($_POST["username"], $_POST["password"]))
                {
                        $ilias->auth->start();
                        $ilias->setAuthError($ilErr->getLastError());
                        ilUtil::redirect("start.php");
                }
        }
}

if (strpos($_SERVER["SCRIPT_FILENAME"], "save_java_question_result") !== FALSE)
{
        // dirty hack for the saving of java applet questions in tests. Unfortunately
        // some changes in this file for ILIAS 3.6 caused this script to stop at the
        // following check (worked in ILIAS <= 3.5).
        // So we return here, because it's only necessary to get the $ilias class for
        // the database connection
        // TODO: Find out what happens here. Talk to Alex Killing
        $lng = new ilLanguage($_SESSION['lang']);
        $GLOBALS['lng'] =& $lng;
        return;
}

if ($ilias->auth->getAuth() && $ilias->account->isCurrentUserActive())
{
        $ilBench->start("Core", "HeaderInclude_getCurrentUserAccountData");

        //get user id
        if (empty($_SESSION["AccountId"]))
        {
                $_SESSION["AccountId"] = $ilias->account->checkUserId();

        // assigned roles are stored in $_SESSION["RoleId"]
                $rbacreview = new ilRbacReview();
                $GLOBALS['rbacreview'] =& $rbacreview;
                $_SESSION["RoleId"] = $rbacreview->assignedRoles($_SESSION["AccountId"]);
        } // TODO: do we need 'else' here?
        else
        {
                // init user
                $ilias->account->setId($_SESSION["AccountId"]);
        }

        // load account data of current user
        $ilias->account->read();
        
        // check client ip
        $clientip = $ilias->account->getClientIP();
        if (trim($clientip) !="" and $clientip != $_SERVER["REMOTE_ADDR"])
        {
                $log ->logError(1,
                        $ilias->account->getLogin().":".$_SERVER["REMOTE_ADDR"].":".$message);
                $ilias->auth->logout();
                @session_destroy();
                ilUtil::redirect("login.php?wrong_ip=true");
        }
        
        // check wether user has accepted the user agreement
        //      echo "-".$script;
        if (!$ilias->account->hasAcceptedUserAgreement() &&
                $script != "view_usr_agreement.php" &&
                $script != "login.php" &&
                $ilias->account->getId() != ANONYMOUS_USER_ID)
        {
//echo "redirect from $script for ".$ilias->account->getFirstName();
                ilUtil::redirect("view_usr_agreement.php?cmd=getAcceptance");
        }

        // update last_login date once the user logged in
        if ($script == "login.php")
        {
                $ilias->account->refreshLogin();
        }

        // set hits per page for all lists using table module
        // Since hits_per_page is always read in ilObjUser we don't need to read it from the session
        #_SESSION["tbl_limit"] = ($_SESSION["tbl_limit"]) ? intval($_SESSION["tbl_limit"]) : intval($ilias->account->prefs["hits_per_page"]);
        #_GET["limit"] = ($_SESSION["tbl_limit"]) ? ($_SESSION["tbl_limit"]) : intval($ilias->account->prefs["hits_per_page"]);
        #_GET["offset"] = intval($_GET["offset"]);
        $_GET['limit'] = $_SESSION['tbl_limit'] = (int) $ilUser->getPref('hits_per_page');
        
        // the next line makes it impossible to save the offset somehow in a session for
        // a specific table (I tried it for the user administration).
        // its not posssible to distinguish whether it has been set to page 1 (=offset = 0)
        // or not set at all (then we want the last offset, e.g. being used from a session var).
        // So I added the wrapping if statement. Seems to work (hopefully).
        // Alex April 14th 2006
        if ($_GET['offset'] != "")                                                      // added April 14th 2006
        {
                $_GET['offset'] = (int) $_GET['offset'];                // old code
        }

        $ilBench->stop("Core", "HeaderInclude_getCurrentUserAccountData");
}
elseif (
                        $script != "login.php" 
                        and $script != "shib_login.php" 
                        and $script != "nologin.php" 
                        and $script != "error.php" 
                        and $script != "index.php"
                        and $script != "view_usr_agreement.php" 
                        and $script != "register.php" 
                        and $script != "chat.php"
                        and $script != "pwassist.php"
                )
{
        // phpinfo();exit;

        $dirname = dirname($_SERVER["PHP_SELF"]);
        $ilurl = parse_url(ILIAS_HTTP_PATH);
        $subdir = substr(strstr($dirname,$ilurl["path"]),strlen($ilurl["path"]));
        $updir = "";

        if ($subdir)
        {
                $num_subdirs = substr_count($subdir,"/");

                for ($i=1;$i<=$num_subdirs;$i++)
                {
                        $updir .= "../";
                }
        }

    if ($ilias->auth->getAuth() && !$ilias->account->isCurrentUserActive())
    {
        $inactive = true;
    }

        session_unset();
        session_destroy();
        
        $return_to = urlencode(substr($_SERVER["REQUEST_URI"],strlen($ilurl["path"])+1));

        if (($_GET["inactive"]) || $inactive)
        {
                ilUtil::redirect($updir."index.php?reload=true&inactive=true&return_to=".$return_to);
        }
        else
        {
                ilUtil::redirect($updir."index.php?client_id=".$_COOKIE["ilClientId"]."&reload=true&return_to=".$return_to);
        }
}

//init language
$ilBench->start("Core", "HeaderInclude_initLanguage");

if (is_null($_SESSION['lang']))
{
        $_GET["lang"] = ($_GET["lang"]) ? $_GET["lang"] : $ilias->account->getPref("language");
}

if ($_POST['change_lang_to'] != "")
{
        $_GET['lang'] = $_POST['change_lang_to'];
}

$_SESSION['lang'] = ($_GET['lang']) ? $_GET['lang'] : $_SESSION['lang'];

// prefer personal setting when coming from login screen 
if ($script == "login.php")
{
        $_SESSION['lang'] = $ilias->account->getPref("language");
}

$lng = new ilLanguage($_SESSION['lang']);
$GLOBALS['lng'] =& $lng;
$ilBench->stop("Core", "HeaderInclude_initLanguage");

// init rbac
$ilBench->start("Core", "HeaderInclude_initRBAC");
$rbacsystem = new ilRbacSystem();
$GLOBALS['rbacsystem'] =& $rbacsystem;
$rbacadmin = new ilRbacAdmin();
$GLOBALS['rbacadmin'] =& $rbacadmin;
$rbacreview = new ilRbacReview();
$GLOBALS['rbacreview'] =& $rbacreview;
$ilAccess =& new ilAccessHandler();
$GLOBALS["ilAccess"] =& $ilAccess;

$ilBench->stop("Core", "HeaderInclude_initRBAC");


// init ref_id on first start ref_id is set to ROOT_FOLDER_ID
//$_GET["ref_id"] = $_GET["ref_id"] ? $_GET["ref_id"] : ROOT_FOLDER_ID;

// init tree
$tree = new ilTree(ROOT_FOLDER_ID);
$GLOBALS['tree'] =& $tree;

// instantiate main template
$tpl = new ilTemplate("tpl.main.html", true, true);
$GLOBALS['tpl'] =& $tpl;


// ### AA 03.10.29 added new LocatorGUI class ###
// when locator data array does not exist, initialise
if ( !isset($_SESSION["locator_level"]) )
{
        $_SESSION["locator_data"] = array();
        $_SESSION["locator_level"] = -1;
}
// initialise global ilias_locator object
$ilias_locator = new ilLocatorGUI();                    // deprecated
$ilLocator = new ilLocatorGUI();
$GLOBALS['ilias_locator'] =& $ilias_locator;    // deprecated
$GLOBALS['ilLocator'] =& $ilLocator;

// load style definitions
$ilBench->start("Core", "HeaderInclude_getStyleDefinitions");
$styleDefinition = new ilStyleDefinition();
$GLOBALS['styleDefinition'] =& $styleDefinition;
$styleDefinition->startParsing();
$ilBench->stop("Core", "HeaderInclude_getStyleDefinitions");

//navigation things
/*
        I really don't know in which case the following code is needed.
        If any errors occur due to disabling this, please do
        not hesitate to mail me... alex.killing@gmx.de

        this function was used for the no_frames template set... shofmann@databay.de

if ($script != "login.php" && $script != "index.php")
{
        if ($tpl->includeNavigation() == true)
        {
                $menu = new ilMainMenu();
                $menu->setTemplate($tpl);
                $menu->addMenuBlock("NAVIGATION", "navigation");
                $menu->setTemplateVars();
                //include("include/inc.mainmenu.php");
        }
}*/

// load style sheet depending on user's settings
$location_stylesheet = ilUtil::getStyleSheetLocation();
$tpl->setVariable("LOCATION_STYLESHEET",$location_stylesheet);
$tpl->setVariable("LOCATION_JAVASCRIPT",dirname($location_stylesheet));

// init infopanel
if ($mail_id = ilMailbox::hasNewMail($_SESSION["AccountId"]))
{
        $mbox = new ilMailbox($_SESSION["AccountId"]);
        $mail =& new ilMail($_SESSION['AccountId']);
        if($rbacsystem->checkAccess('mail_visible',$mail->getMailObjectReferenceId()))
        {
                $folder_id = $mbox->getInboxFolder();
                
                $_SESSION["infopanel"] = array ("link"  => "mail_frameset.php?target=".
                                                                                htmlentities(urlencode("mail_read.php?mobj_id=".$folder_id."&mail_id=".$mail_id)),
                                                                                "text"  => "new_mail"
                                                                                //"img" => "icon_mail.gif"
                        );
        }
}

// php5 downward complaince to php 4 dom xml and clone method
if (version_compare(PHP_VERSION,'5','>='))
{
        require_once("include/inc.xml5compliance.php");
        require_once("include/inc.xsl5compliance.php");
        require_once("include/inc.php4compliance.php");
}
else
{
        require_once("include/inc.php5compliance.php");
}

// provide global browser information
$ilBrowser = new ilBrowser();
$GLOBALS['ilBrowser'] =& $ilBrowser;

// provide global help object
$ilHelp = new ilHelp();
$GLOBALS['ilHelp'] =& $ilHelp;

// main tabs gui
include_once 'classes/class.ilTabsGUI.php';
$ilTabs = new ilTabsGUI();
$GLOBALS['ilTabs'] =& $ilTabs;

// Store online time of user
ilOnlineTracking::_updateAccess($ilUser->getId());


// utf-8 fix?
$q = "SET NAMES utf8";
//$ilDB->query($q);

$ilBench->stop("Core", "HeaderInclude");
$ilBench->save();

?>