ilInitialisation Class Reference

ILIAS Initialisation Utility Class perform basic setup: init database handler, load configuration file, init user authentification & error handler, load object type definitions. More...

Collaboration diagram for ilInitialisation:

Static Public Member Functions
static	setSessionHandler ()
	set session handler to db More...
static	goToPublicSection ($a_auth_stat="")
	go to public section More...
static	initILIAS ()
	ilias initialisation More...

Static Protected Member Functions
static	removeUnsafeCharacters ()
	Remove unsafe characters from GET. More...
static	requireCommonIncludes ()
	get common include code files More...
static	includePhp5Compliance ()
	This is a hack for authentication. More...
static	initIliasIniFile ()
	This method provides a global instance of class ilIniFile for the ilias.ini.php file in variable $ilIliasIniFile. More...
static	buildHTTPPath ()
	builds http path More...
static	determineClient ()
	This method determines the current client and sets the constant CLIENT_ID. More...
static	initClientIniFile ()
	This method provides a global instance of class ilIniFile for the client.ini.php file in variable $ilClientIniFile. More...
static	handleMaintenanceMode ()
	handle maintenance mode More...
static	initDatabase ()
	initialise database object $ilDB More...
static	setCookieParams ()
	set session cookie params for path, domain, etc. More...
static	initSettings ()
	initialise $ilSettings object and define constants More...
static	initStyle ()
	provide $styleDefinition object More...
static	initLocale ()
	Init Locale. More...
static	goToLogin ($a_auth_stat="")
	go to login More...
static	initLanguage ()
	$lng initialisation More...
static	initAccessHandling ()
	$ilAccess and $rbac... More...
static	initLog ()
	Init log instance. More...
static	initGlobal ($a_name, $a_class, $a_source_file=null)
	Initialize global instance. More...
static	abortAndDie ($a_message)
	Exit. More...
static	handleDevMode ()
	Prepare developer tools. More...
static	initCore ()
	Init core objects (level 0) More...
static	initClient ()
	Init client-based objects (level 1) More...
static	initUser ()
	Init user / authentification (level 2) More...
static	authenticate ()
	Try authentication. More...
static	getCurrentCmd ()
	Extract current cmd from request. More...
static	blockedAuthentication ($a_current_script)
	Block authentication based on current request. More...
static	showingLoginForm ($a_current_script)
	Is current view the login form? More...
static	translateMessage ($a_message_id, array $a_message_static=null)
	Translate message if possible. More...
static	redirect ($a_target, $a_message_id, $a_message_static)
	Redirects to target url if context supports it. More...

Detailed Description

ILIAS Initialisation Utility Class perform basic setup: init database handler, load configuration file, init user authentification & error handler, load object type definitions.

Author

Alex Killing alex..nosp@m.kill.nosp@m.ing@g.nosp@m.mx.d.nosp@m.e

Sascha Hofmann shofm.nosp@m.ann@.nosp@m.datab.nosp@m.ay.d.nosp@m.e

Version

$Id$

Definition at line 27 of file class.ilInitialisation.php.

Member Function Documentation

abortAndDie()

static ilInitialisation::abortAndDie (   $a_message )

staticprotected

Exit.

Parameters

string

$a_message

Definition at line 869 of file class.ilInitialisation.php.

References $GLOBALS.

        {               
                if(is_object($GLOBALS['ilLog']))
                {
                        $GLOBALS['ilLog']->write("Fatal Error: ilInitialisation - ".$a_message);
                }
                die($a_message);
        }

authenticate()

static ilInitialisation::authenticate ( )

staticprotected

Try authentication.

This will basically validate the current session

Definition at line 1144 of file class.ilInitialisation.php.

References $_GET, $ilCtrl, $ilErr, $ilSetting, $ilUser, $tpl, AUTH_EXPIRED, AUTH_IDLED, ilContext\CONTEXT_SOAP, ilContext\doAuthentication(), ilUtil\getStyleSheetLocation(), ilContext\getType(), ilContext\hasUser(), and ilSession\set().

        {
                global $ilAuth, $ilias, $ilErr;
                
                $current_script = substr(strrchr($_SERVER["PHP_SELF"], "/"), 1);                
                
                if(self::blockedAuthentication($current_script))
                {
                        return;
                }
                                                
                $oldSid = session_id();         
                
                $ilAuth->start();
                $ilias->setAuthError($ilErr->getLastError());
                                
                if(IS_PAYMENT_ENABLED)
                {
                        // cart is "attached" to session, has to be updated
                        $newSid = session_id();
                        if($oldSid != $newSid)
                        {
                                include_once './Services/Payment/classes/class.ilPaymentShoppingCart.php';
                                ilPaymentShoppingCart::_migrateShoppingCart($oldSid, $newSid);
                        }
                }                                       
                
                if($ilAuth->getAuth() && $ilAuth->getStatus() == '')
                {
                        self::initUserAccount();
                        
                        self::handleAuthenticationSuccess();
                }                       
                else 
                {                                                                       
                        if (!self::showingLoginForm($current_script))
                        {                                                               
                                // :TODO: should be moved to context?!
                                $mandatory_auth = ($current_script != "shib_login.php"
                                                && $current_script != "shib_logout.php"
                                                && $current_script != "error.php"
                                                && $current_script != "chat.php"
                                                && $current_script != "index.php"); // #10316
                                
                                if($mandatory_auth)
                                {
                                        self::handleAuthenticationFail();
                                }
                        }               
                }                                       
        }

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blockedAuthentication()

static ilInitialisation::blockedAuthentication (   $a_current_script )

staticprotected

Block authentication based on current request.

Returns

boolean

Definition at line 1341 of file class.ilInitialisation.php.

References $_GET, $_REQUEST, and $cmd.

        {
                if($a_current_script == "register.php" || 
                        $a_current_script == "pwassist.php" ||
                        $a_current_script == "confirmReg.php" ||
                        $a_current_script == "il_securimage_play.php" ||
                        $a_current_script == "il_securimage_show.php") 
                {
                        return true;
                }
                
                if($_REQUEST["baseClass"] == "ilStartUpGUI")
                {
                        $cmd_class = $_REQUEST["cmdClass"];
                        
                        if($cmd_class == "ilaccountregistrationgui" ||
                                $cmd_class == "ilpasswordassistancegui")
                        {
                                return true;
                        }
                        
                        $cmd = self::getCurrentCmd();
                        if($cmd == "showTermsOfService" || $cmd == "showClientList" || 
                                $cmd == 'showAccountMigration' || $cmd == 'migrateAccount' ||
                                $cmd == 'processCode')
                        {
                                return true;
                        }
                }
                
                // #12884
                if(($a_current_script == "goto.php" && $_GET["target"] == "impr_0") ||
                        $_GET["baseClass"] == "ilImprintGUI")
                {
                        return true;
                }
                
                return false;
        }

buildHTTPPath()

static ilInitialisation::buildHTTPPath ( )

staticprotected

builds http path

Definition at line 185 of file class.ilInitialisation.php.

References $dirs, $https, $path, ILIAS_MODULE, and ilUtil\removeTrailingPathSeparators().

        {
                include_once './Services/Http/classes/class.ilHTTPS.php';
                $https = new ilHTTPS();

            if($https->isDetected())
                {
                        $protocol = 'https://';
                }
                else
                {
                        $protocol = 'http://';
                }
                $host = $_SERVER['HTTP_HOST'];

                $rq_uri = $_SERVER['REQUEST_URI'];

                // security fix: this failed, if the URI contained "?" and following "/"
                // -> we remove everything after "?"
                if (is_int($pos = strpos($rq_uri, "?")))
                {
                        $rq_uri = substr($rq_uri, 0, $pos);
                }

                if(!defined('ILIAS_MODULE'))
                {
                        $path = pathinfo($rq_uri);
                        if(!$path['extension'])
                        {
                                $uri = $rq_uri;
                        }
                        else
                        {
                                $uri = dirname($rq_uri);
                        }
                }
                else
                {
                        // if in module remove module name from HTTP_PATH
                        $path = dirname($rq_uri);

                        // dirname cuts the last directory from a directory path e.g content/classes return content

                        $module = ilUtil::removeTrailingPathSeparators(ILIAS_MODULE);

                        $dirs = explode('/',$module);
                        $uri = $path;
                        foreach($dirs as $dir)
                        {
                                $uri = dirname($uri);
                        }
                }
                
                return define('ILIAS_HTTP_PATH',ilUtil::removeTrailingPathSeparators($protocol.$host.$uri));
        }

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determineClient()

static ilInitialisation::determineClient ( )

staticprotected

This method determines the current client and sets the constant CLIENT_ID.

Definition at line 245 of file class.ilInitialisation.php.

References $_COOKIE, $_GET, $client_id, $ilIliasIniFile, ilUtil\setCookie(), and ilUtil\stripSlashes().

        {
                global $ilIliasIniFile;

                // check whether ini file object exists
                if (!is_object($ilIliasIniFile))
                {
                        self::abortAndDie("Fatal Error: ilInitialisation::determineClient called without initialisation of ILIAS ini file object.");
                }
                                
                // set to default client if empty
                if ($_GET["client_id"] != "")
                {
                        $_GET["client_id"] = ilUtil::stripSlashes($_GET["client_id"]);
                        if (!defined("IL_PHPUNIT_TEST"))
                        {
                                ilUtil::setCookie("ilClientId", $_GET["client_id"]);
                        }
                }
                else if (!$_COOKIE["ilClientId"])
                {
                        // to do: ilias ini raus nehmen
                        $client_id = $ilIliasIniFile->readVariable("clients","default");
                        ilUtil::setCookie("ilClientId", $client_id);
                }
                if (!defined("IL_PHPUNIT_TEST"))
                {
                        define ("CLIENT_ID", $_COOKIE["ilClientId"]);
                }
                else
                {
                        define ("CLIENT_ID", $_GET["client_id"]);
                }
        }

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getCurrentCmd()

static ilInitialisation::getCurrentCmd ( )

staticprotected

Extract current cmd from request.

Returns

string

Definition at line 1323 of file class.ilInitialisation.php.

References $_REQUEST, and $cmd.

        {
                $cmd = $_REQUEST["cmd"];
                if(is_array($cmd))
                {
                        return array_shift(array_keys($cmd));
                }
                else 
                {
                        return $cmd;
                }
        }

goToLogin()

static ilInitialisation::goToLogin (   $a_auth_stat = "" )

staticprotected

go to login

Parameters

int

$a_auth_stat

Definition at line 711 of file class.ilInitialisation.php.

References $_COOKIE, $_GET, AUTH_EXPIRED, AUTH_IDLED, ilSession\SESSION_CLOSE_EXPIRE, ilSession\SESSION_CLOSE_LOGIN, and ilSession\setClosingContext().

        {               
                global $ilAuth;
                
                // close current session
                if($a_auth_stat == AUTH_EXPIRED ||
                        $a_auth_stat == AUTH_IDLED)
                {
                        ilSession::setClosingContext(ilSession::SESSION_CLOSE_EXPIRE);
                }
                else
                {
                        ilSession::setClosingContext(ilSession::SESSION_CLOSE_LOGIN);
                }
                $ilAuth->logout();
                session_unset();
                session_destroy();

                $add = "";
                if ($_GET["soap_pw"] != "")
                {
                        $add = "&soap_pw=".$_GET["soap_pw"]."&ext_uid=".$_GET["ext_uid"];
                }

                $script = "login.php?target=".$_GET["target"]."&client_id=".$_COOKIE["ilClientId"].
                        "&auth_stat=".$a_auth_stat.$add;
                                        
                self::redirect($script, "init_error_authentication_fail",
                        array("en" => "Authentication failed.",
                                "de" => "Authentifizierung fehlgeschlagen."));
        }

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goToPublicSection()

static ilInitialisation::goToPublicSection (   $a_auth_stat = "" )

static

go to public section

Parameters

int

$a_auth_stat

Definition at line 631 of file class.ilInitialisation.php.

References $_GET, $_POST, ilAuthUtils\_initAuth(), AUTH_EXPIRED, AUTH_IDLED, ilSession\SESSION_CLOSE_EXPIRE, ilSession\SESSION_CLOSE_PUBLIC, and ilSession\setClosingContext().

Referenced by ilStartUpGUI\processIndexPHP().

        {
                global $ilAuth;
                                
                if (ANONYMOUS_USER_ID == "")
                {
                        self::abortAndDie("Public Section enabled, but no Anonymous user found.");
                }

                // logout and end previous session
                if($a_auth_stat == AUTH_EXPIRED ||
                        $a_auth_stat == AUTH_IDLED)
                {
                        ilSession::setClosingContext(ilSession::SESSION_CLOSE_EXPIRE);
                }
                else
                {
                        ilSession::setClosingContext(ilSession::SESSION_CLOSE_PUBLIC);
                }
                $ilAuth->logout();
                session_unset();
                session_destroy();
                
                // new session and login as anonymous
                self::setSessionHandler();
                session_start();
                $_POST["username"] = "anonymous";
                $_POST["password"] = "anonymous";
                ilAuthUtils::_initAuth();
                
                // authenticate (anonymous)
                $oldSid = session_id();         
                $ilAuth->start();               
                if (IS_PAYMENT_ENABLED)
                {
                        $newSid = session_id();
                        if($oldSid != $newSid)
                        {
                                include_once './Services/Payment/classes/class.ilPaymentShoppingCart.php';
                                ilPaymentShoppingCart::_migrateShoppingCart($oldSid, $newSid);
                        }
                }
                
                if (!$ilAuth->getAuth())
                {
                        self::abortAndDie("ANONYMOUS user with the object_id ".ANONYMOUS_USER_ID." not found!");
                }
                
                self::initUserAccount();
                
                $mess_id = "init_error_authentication_fail";
                $mess = array("en" => "Authentication failed.",
                        "de" => "Authentifizierung fehlgeschlagen.");
                
                // if target given, try to go there
                if ($_GET["target"] != "")
                {       
                        // when we are already "inside" goto.php no redirect is needed
                        $current_script = substr(strrchr($_SERVER["PHP_SELF"], "/"), 1);        
                        if($current_script == "goto.php")
                        {
                                return;
                        }               
                        
                        // goto will check if target is accessible or redirect to login
                        self::redirect("goto.php?target=".$_GET["target"], $mess_id, $mess);                    
                }
                
                // we do not know if ref_id of request is accesible, so redirecting to root
                $_GET["ref_id"] = ROOT_FOLDER_ID;
                $_GET["cmd"] = "frameset";
                self::redirect("ilias.php?baseClass=ilrepositorygui&reloadpublic=1&cmd=".
                        $_GET["cmd"]."&ref_id=".$_GET["ref_id"], $mess_id, $mess);
        }

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handleDevMode()

static ilInitialisation::handleDevMode ( )

staticprotected

Prepare developer tools.

Definition at line 881 of file class.ilInitialisation.php.

        {
                if(defined(SHOWNOTICES) && SHOWNOTICES)
                {
                        // no further differentiating of php version regarding to 5.4 neccessary
                        // when the error reporting is set to E_ALL anyway
                        
                        // remove notices from error reporting
                        if (version_compare(PHP_VERSION, '5.3.0', '>='))
                        {
                                error_reporting(E_ALL);
                        }
                        else
                        {
                                error_reporting(E_ALL);
                        }
                }

                include_once "include/inc.debug.php";
        }

handleMaintenanceMode()

static ilInitialisation::handleMaintenanceMode ( )

staticprotected

handle maintenance mode

Definition at line 376 of file class.ilInitialisation.php.

References ilContext\hasHTML().

        {
                global $ilClientIniFile;

                if (!$ilClientIniFile->readVariable("client","access"))
                {                                               
                        $mess = array("en" => "The server is not available due to maintenance.".
                                        " We apologise for any inconvenience.",
                                "de" => "Der Server ist aufgrund von Wartungsarbeiten nicht verfügbar.".
                                        " Wir bitten um Verständnis.");
                        $mess_id = "init_error_maintenance";
                        
                        if (ilContext::hasHTML() && is_file("./maintenance.html"))
                        {
                                self::redirect("./maintenance.html", $mess_id, $mess);
                        }
                        else
                        {                                       
                                $mess = self::translateMessage($mess_id, $mess);
                                self::abortAndDie($mess);
                        }
                }
        }

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includePhp5Compliance()

static ilInitialisation::includePhp5Compliance ( )

staticprotected

This is a hack for authentication.

Since the phpCAS lib ships with its own compliance functions.

Definition at line 93 of file class.ilInitialisation.php.

References ilAuthFactory\CONTEXT_CAS, and ilAuthFactory\getContext().

        {
                // php5 downward complaince to php 4 dom xml and clone method
                if (version_compare(PHP_VERSION,'5','>='))
                {
                        include_once 'Services/Authentication/classes/class.ilAuthFactory.php';
                        if(ilAuthFactory::getContext() != ilAuthFactory::CONTEXT_CAS)
                        {
                                require_once("include/inc.xml5compliance.php");
                        }
                        require_once("include/inc.xsl5compliance.php");
                }
        }

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initAccessHandling()

static ilInitialisation::initAccessHandling ( )

staticprotected

$ilAccess and $rbac...

initialisation

Definition at line 807 of file class.ilInitialisation.php.

References ilRbacSystem\getInstance().

        {                               
                self::initGlobal("rbacreview", "ilRbacReview",
                        "./Services/AccessControl/classes/class.ilRbacReview.php");
                
                require_once "./Services/AccessControl/classes/class.ilRbacSystem.php";
                $rbacsystem = ilRbacSystem::getInstance();
                self::initGlobal("rbacsystem", $rbacsystem);
                
                self::initGlobal("rbacadmin", "ilRbacAdmin",
                         "./Services/AccessControl/classes/class.ilRbacAdmin.php");
                
                self::initGlobal("ilAccess", "ilAccessHandler", 
                         "./Services/AccessControl/classes/class.ilAccessHandler.php");
                
                require_once "./Services/AccessControl/classes/class.ilConditionHandler.php";
        }

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initClient()

static ilInitialisation::initClient ( )

staticprotected

Init client-based objects (level 1)

Definition at line 1001 of file class.ilInitialisation.php.

References $GLOBALS, $https, and ilContext\usesHTTP().

        {
                global $https, $ilias; 
                
                self::determineClient();

                self::initClientIniFile();
                                
                
                // --- needs client ini         
                
                $ilias->client_id = CLIENT_ID;
                
                if (DEVMODE)
                {
                        self::handleDevMode();
                }                                               
        
                self::initLog();                

                self::handleMaintenanceMode();

                self::initDatabase();
                
                
                // --- needs database
                
                self::initGlobal("ilAppEventHandler", "ilAppEventHandler",
                        "./Services/EventHandling/classes/class.ilAppEventHandler.php");

                // there are rare cases where initILIAS is called twice for a request
                // example goto.php is called and includes ilias.php later
                // we must prevent that ilPluginAdmin is initialized twice in
                // this case, since this won't get the values out of plugin.php the
                // second time properly
                if (!is_object($GLOBALS["ilPluginAdmin"]))
                {
                        self::initGlobal("ilPluginAdmin", "ilPluginAdmin",
                                "./Services/Component/classes/class.ilPluginAdmin.php");
                }

                self::setSessionHandler();

                self::initSettings();
                
                
                // --- needs settings   
                
                self::initLocale();                             
                                                
                if(ilContext::usesHTTP())
                {
                        // $https 
                        self::initGlobal("https", "ilHTTPS", "./Services/Http/classes/class.ilHTTPS.php");
                        $https->enableSecureCookies();
                        $https->checkPort();    
                }               
                

                // --- object handling          
                
                self::initGlobal("ilObjDataCache", "ilObjectDataCache",
                        "./Services/Object/classes/class.ilObjectDataCache.php");
                                                                                                
                // needed in ilObjectDefinition
                require_once "./Services/Xml/classes/class.ilSaxParser.php";
                
                self::initGlobal("objDefinition", "ilObjectDefinition",
                        "./Services/Object/classes/class.ilObjectDefinition.php");
                
                // $tree
                require_once "./Services/Tree/classes/class.ilTree.php";
                $tree = new ilTree(ROOT_FOLDER_ID);
                self::initGlobal("tree", $tree);
                unset($tree);

                self::initGlobal("ilCtrl", "ilCtrl",
                                "./Services/UICore/classes/class.ilCtrl.php");
        }

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initClientIniFile()

static ilInitialisation::initClientIniFile ( )

staticprotected

This method provides a global instance of class ilIniFile for the client.ini.php file in variable $ilClientIniFile.

It initializes a lot of constants accordingly to the settings in the client.ini.php file.

Preconditions: ILIAS_WEB_DIR and CLIENT_ID must be set.

Returns

boolean true, if no error occured with client init file otherwise false

Definition at line 292 of file class.ilInitialisation.php.

References $_COOKIE, $ilIliasIniFile, ILIAS_ABSOLUTE_PATH, ILIAS_WEB_DIR, and ilUtil\setCookie().

        {
                global $ilIliasIniFile;
                
                // check whether ILIAS_WEB_DIR is set.
                if (ILIAS_WEB_DIR == "")
                {
                        self::abortAndDie("Fatal Error: ilInitialisation::initClientIniFile called without ILIAS_WEB_DIR.");
                }

                // check whether CLIENT_ID is set.
                if (CLIENT_ID == "")
                {
                        self::abortAndDie("Fatal Error: ilInitialisation::initClientIniFile called without CLIENT_ID.");
                }

                $ini_file = "./".ILIAS_WEB_DIR."/".CLIENT_ID."/client.ini.php";

                // get settings from ini file
                require_once("./Services/Init/classes/class.ilIniFile.php");
                $ilClientIniFile = new ilIniFile($ini_file);            
                $ilClientIniFile->read();
                
                // invalid client id / client ini
                if ($ilClientIniFile->ERROR != "")
                {
                        $c = $_COOKIE["ilClientId"];
                        $default_client = $ilIliasIniFile->readVariable("clients","default");                                           
                        ilUtil::setCookie("ilClientId", $default_client);
                        if (CLIENT_ID != "" && CLIENT_ID != $default_client)
                        {
                                $mess = array("en" => "Client does not exist.",
                                                "de" => "Mandant ist ungültig.");
                                self::redirect("index.php?client_id=".$default_client, null, $mess);                                                    
                        }
                        else
                        {
                                self::abortAndDie("Invalid client");
                        }
                }
                
                self::initGlobal("ilClientIniFile", $ilClientIniFile);

                // set constants
                define ("SESSION_REMINDER_LEADTIME", 30);
                define ("DEBUG",$ilClientIniFile->readVariable("system","DEBUG"));
                define ("DEVMODE",$ilClientIniFile->readVariable("system","DEVMODE"));
                define ("SHOWNOTICES",$ilClientIniFile->readVariable("system","SHOWNOTICES"));
                define ("ROOT_FOLDER_ID",$ilClientIniFile->readVariable('system','ROOT_FOLDER_ID'));
                define ("SYSTEM_FOLDER_ID",$ilClientIniFile->readVariable('system','SYSTEM_FOLDER_ID'));
                define ("ROLE_FOLDER_ID",$ilClientIniFile->readVariable('system','ROLE_FOLDER_ID'));
                define ("MAIL_SETTINGS_ID",$ilClientIniFile->readVariable('system','MAIL_SETTINGS_ID'));
                
                // this is for the online help installation, which sets OH_REF_ID to the
                // ref id of the online module
                define ("OH_REF_ID",$ilClientIniFile->readVariable("system","OH_REF_ID"));

                define ("SYSTEM_MAIL_ADDRESS",$ilClientIniFile->readVariable('system','MAIL_SENT_ADDRESS')); // Change SS
                define ("MAIL_REPLY_WARNING",$ilClientIniFile->readVariable('system','MAIL_REPLY_WARNING')); // Change SS

                // see ilObject::TITLE_LENGTH, ilObject::DESC_LENGTH
                // define ("MAXLENGTH_OBJ_TITLE",125);#$ilClientIniFile->readVariable('system','MAXLENGTH_OBJ_TITLE'));
                // define ("MAXLENGTH_OBJ_DESC",$ilClientIniFile->readVariable('system','MAXLENGTH_OBJ_DESC'));

                define ("CLIENT_DATA_DIR",ILIAS_DATA_DIR."/".CLIENT_ID);
                define ("CLIENT_WEB_DIR",ILIAS_ABSOLUTE_PATH."/".ILIAS_WEB_DIR."/".CLIENT_ID);
                define ("CLIENT_NAME",$ilClientIniFile->readVariable('client','name')); // Change SS

                $val = $ilClientIniFile->readVariable("db","type");
                if ($val == "")
                {
                        define ("IL_DB_TYPE", "mysql");
                }
                else
                {
                        define ("IL_DB_TYPE", $val);
                }
                
                return true;
        }

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initCore()

static ilInitialisation::initCore ( )

staticprotected

Init core objects (level 0)

Definition at line 945 of file class.ilInitialisation.php.

References $_POST, $ilErr, ilSession\get(), PEAR_ERROR_CALLBACK, and PEAR\setErrorHandling().

        {
                global $ilErr;
                
                // remove notices from error reporting
                if (version_compare(PHP_VERSION, '5.4.0', '>='))
                {
                        // Prior to PHP 5.4.0 E_ALL does not include E_STRICT.
                        // With PHP 5.4.0 and above E_ALL >DOES< include E_STRICT.
                        
                        error_reporting(((ini_get("error_reporting") & ~E_NOTICE) & ~E_DEPRECATED) & ~E_STRICT);
                }
                elseif (version_compare(PHP_VERSION, '5.3.0', '>='))
                {
                        error_reporting((ini_get("error_reporting") & ~E_NOTICE) & ~E_DEPRECATED);
                }
                else
                {
                        error_reporting(ini_get('error_reporting') & ~E_NOTICE);
                }
                // breaks CAS: must be included after CAS context isset in AuthUtils
                //self::includePhp5Compliance();

                self::requireCommonIncludes();
                
                
                // error handler 
                self::initGlobal("ilErr", "ilErrorHandling", 
                        "./Services/Init/classes/class.ilErrorHandling.php");
                $ilErr->setErrorHandling(PEAR_ERROR_CALLBACK, array($ilErr, 'errorHandler'));           
                
                // :TODO: obsolete?
                PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, array($ilErr, "errorHandler"));
                                        
                // workaround: load old post variables if error handler 'message' was called
                include_once "Services/Authentication/classes/class.ilSession.php";
                if (ilSession::get("message"))
                {
                        $_POST = ilSession::get("post_vars");
                }
                                        
                self::removeUnsafeCharacters();
                                
                self::setCookieParams();
                
                
                self::initIliasIniFile();               
                
                
                // deprecated
                self::initGlobal("ilias", "ILIAS", "./Services/Init/classes/class.ilias.php");                          
        }

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initDatabase()

static ilInitialisation::initDatabase ( )

staticprotected

initialise database object $ilDB

Definition at line 404 of file class.ilInitialisation.php.

References ilDBWrapperFactory\getWrapper().

        {
                // build dsn of database connection and connect
                require_once("./Services/Database/classes/class.ilDBWrapperFactory.php");                               
                $ilDB = ilDBWrapperFactory::getWrapper(IL_DB_TYPE);
                $ilDB->initFromIniFile();
                $ilDB->connect();
                
                self::initGlobal("ilDB", $ilDB);                
        }

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initGlobal()

static ilInitialisation::initGlobal (   $a_name,   $a_class,   $a_source_file = null  )

staticprotected

Initialize global instance.

Parameters

string	$a_name
string	$a_class
string	$a_source_file

Definition at line 851 of file class.ilInitialisation.php.

References $GLOBALS.

        {
                if($a_source_file)
                {
                        include_once $a_source_file;
                        $GLOBALS[$a_name] = new $a_class;
                }
                else
                {
                        $GLOBALS[$a_name] = $a_class;
                }
        }

initILIAS()

static ilInitialisation::initILIAS ( )

static

ilias initialisation

Definition at line 905 of file class.ilInitialisation.php.

References ilContext\doAuthentication(), ilContext\hasHTML(), ilContext\hasUser(), ilContext\initClient(), and ilECSTaskScheduler\start().

Referenced by ilSoapAdministration\getClientInfoXML(), ilSoapAdministration\getInstallationInfoXML(), ilCalendarRemoteAccessHandler\initIlias(), and ilSoapAdministration\initIlias().

        {
                global $tree;
                
                self::initCore();
                                
                if(ilContext::initClient())
                {
                        self::initClient();
                                                                        
                        if (ilContext::hasUser())
                        {                                               
                                self::initUser();
                                
                                if(ilContext::doAuthentication())
                                {
                                        self::authenticate();
                                }                               
                        }       

                        // init after Auth otherwise breaks CAS
                        self::includePhp5Compliance();
                        
                        // language may depend on user setting
                        self::initLanguage();
                        $tree->initLangCode();

                        if(ilContext::hasHTML())
                        {                                                                                                       
                                include_once('./Services/WebServices/ECS/classes/class.ilECSTaskScheduler.php');
                                ilECSTaskScheduler::start();                                    
                                
                                self::initHTML();               
                        }                                                       
                }                                       
        }

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initIliasIniFile()

static ilInitialisation::initIliasIniFile ( )

staticprotected

This method provides a global instance of class ilIniFile for the ilias.ini.php file in variable $ilIliasIniFile.

It initializes a lot of constants accordingly to the settings in the ilias.ini.php file.

Definition at line 114 of file class.ilInitialisation.php.

References $ilIliasIniFile.

        {               
                require_once("./Services/Init/classes/class.ilIniFile.php");
                $ilIliasIniFile = new ilIniFile("./ilias.ini.php");                             
                $ilIliasIniFile->read();
                self::initGlobal('ilIliasIniFile', $ilIliasIniFile);

                // initialize constants
                define("ILIAS_DATA_DIR",$ilIliasIniFile->readVariable("clients","datadir"));
                define("ILIAS_WEB_DIR",$ilIliasIniFile->readVariable("clients","path"));
                define("ILIAS_ABSOLUTE_PATH",$ilIliasIniFile->readVariable('server','absolute_path'));

                // logging
                define ("ILIAS_LOG_DIR",$ilIliasIniFile->readVariable("log","path"));
                define ("ILIAS_LOG_FILE",$ilIliasIniFile->readVariable("log","file"));
                define ("ILIAS_LOG_ENABLED",$ilIliasIniFile->readVariable("log","enabled"));
                define ("ILIAS_LOG_LEVEL",$ilIliasIniFile->readVariable("log","level"));
                define ("SLOW_REQUEST_TIME",$ilIliasIniFile->readVariable("log","slow_request_time"));

                // read path + command for third party tools from ilias.ini
                define ("PATH_TO_CONVERT",$ilIliasIniFile->readVariable("tools","convert"));
                define ("PATH_TO_FFMPEG",$ilIliasIniFile->readVariable("tools","ffmpeg"));
                define ("PATH_TO_ZIP",$ilIliasIniFile->readVariable("tools","zip"));
                define ("PATH_TO_MKISOFS",$ilIliasIniFile->readVariable("tools","mkisofs"));
                define ("PATH_TO_UNZIP",$ilIliasIniFile->readVariable("tools","unzip"));
                define ("PATH_TO_GHOSTSCRIPT",$ilIliasIniFile->readVariable("tools","ghostscript"));
                define ("PATH_TO_JAVA",$ilIliasIniFile->readVariable("tools","java"));
                define ("PATH_TO_HTMLDOC",$ilIliasIniFile->readVariable("tools","htmldoc"));
                define ("URL_TO_LATEX",$ilIliasIniFile->readVariable("tools","latex"));
                define ("PATH_TO_FOP",$ilIliasIniFile->readVariable("tools","fop"));

                // read virus scanner settings
                switch ($ilIliasIniFile->readVariable("tools", "vscantype"))
                {
                        case "sophos":
                                define("IL_VIRUS_SCANNER", "Sophos");
                                define("IL_VIRUS_SCAN_COMMAND", $ilIliasIniFile->readVariable("tools", "scancommand"));
                                define("IL_VIRUS_CLEAN_COMMAND", $ilIliasIniFile->readVariable("tools", "cleancommand"));
                                break;

                        case "antivir":
                                define("IL_VIRUS_SCANNER", "AntiVir");
                                define("IL_VIRUS_SCAN_COMMAND", $ilIliasIniFile->readVariable("tools", "scancommand"));
                                define("IL_VIRUS_CLEAN_COMMAND", $ilIliasIniFile->readVariable("tools", "cleancommand"));
                                break;

                        case "clamav":
                                define("IL_VIRUS_SCANNER", "ClamAV");
                                define("IL_VIRUS_SCAN_COMMAND", $ilIliasIniFile->readVariable("tools", "scancommand"));
                                define("IL_VIRUS_CLEAN_COMMAND", $ilIliasIniFile->readVariable("tools", "cleancommand"));
                                break;

                        default:
                                define("IL_VIRUS_SCANNER", "None");
                                break;
                }
                
                $tz = $ilIliasIniFile->readVariable("server","timezone");
                if ($tz != "")
                {
                        if (function_exists('date_default_timezone_set'))
                        {
                                date_default_timezone_set($tz);
                        }
                }
                define ("IL_TIMEZONE", $ilIliasIniFile->readVariable("server","timezone"));
        }

initLanguage()

static ilInitialisation::initLanguage ( )

staticprotected

$lng initialisation

Definition at line 746 of file class.ilInitialisation.php.

References $_GET, $_POST, $ilSetting, $ilUser, $lng, ilSession\get(), ilLanguage\getInstalledLanguages(), ilSession\set(), and ilUtil\stripSlashes().

        {
                global $ilUser, $ilSetting, $rbacsystem;
                
                if (!ilSession::get("lang"))
                {
                        if ($_GET['lang'])
                        {
                                $_GET['lang'] = $_GET['lang'];
                        }
                        else
                        {
                                if (is_object($ilUser))
                                {
                                        $_GET['lang'] = $ilUser->getPref('language');
                                }
                        }
                }

                if (isset($_POST['change_lang_to']) && $_POST['change_lang_to'] != "")
                {
                        $_GET['lang'] = ilUtil::stripSlashes($_POST['change_lang_to']);
                }

                // prefer personal setting when coming from login screen
                // Added check for ilUser->getId > 0 because it is 0 when the language is changed and the terms of service should be displayes (Helmut Schottm��ller, 2006-10-14)
                if (is_object($ilUser) && $ilUser->getId() != ANONYMOUS_USER_ID && $ilUser->getId() > 0)
                {
                        ilSession::set('lang', $ilUser->getPref('language'));
                }

                ilSession::set('lang', (isset($_GET['lang']) && $_GET['lang']) ? $_GET['lang'] : ilSession::get('lang'));

                // check whether lang selection is valid
                require_once "./Services/Language/classes/class.ilLanguage.php";
                $langs = ilLanguage::getInstalledLanguages();
                if (!in_array(ilSession::get('lang'), $langs))
                {
                        if (is_object($ilSetting) && $ilSetting->get('language') != '')
                        {
                                ilSession::set('lang', $ilSetting->get('language'));
                        }
                        else
                        {
                                ilSession::set('lang', $langs[0]);
                        }
                }
                $_GET['lang'] = ilSession::get('lang');
                                                
                $lng = new ilLanguage(ilSession::get('lang'));
                self::initGlobal('lng', $lng);
                
                if(is_object($rbacsystem))
                {
                        $rbacsystem->initMemberView();
                }
        }

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initLocale()

static ilInitialisation::initLocale ( )

staticprotected

Init Locale.

Definition at line 599 of file class.ilInitialisation.php.

References $GLOBALS, and $ilSetting.

        {
                global $ilSetting;
                
                if (trim($ilSetting->get("locale") != ""))
                {
                        $larr = explode(",", trim($ilSetting->get("locale")));
                        $ls = array();
                        $first = $larr[0];
                        foreach ($larr as $l)
                        {
                                if (trim($l) != "")
                                {
                                        $ls[] = $l;
                                }
                        }
                        if (count($ls) > 0)
                        {
                                setlocale(LC_ALL, $ls);
                                if (class_exists("Collator"))
                                {
                                        $GLOBALS["ilCollator"] = new Collator($first);
                                }
                        }
                }
        }

initLog()

static ilInitialisation::initLog ( )

staticprotected

Init log instance.

Definition at line 828 of file class.ilInitialisation.php.

References $log.

        {               
                require_once "./Services/Logging/classes/class.ilLog.php";
                try
                {
                        $log = new ilLog(ILIAS_LOG_DIR,ILIAS_LOG_FILE,CLIENT_ID,ILIAS_LOG_ENABLED,ILIAS_LOG_LEVEL);                             
                }
                catch(ilLogException $e)
                {
                        self::abortAndDie($e->getMessage());
                }
                self::initGlobal("ilLog", $log);
                // deprecated
                self::initGlobal("log", $log);
        }

initSettings()

static ilInitialisation::initSettings ( )

staticprotected

initialise $ilSettings object and define constants

Used in Soap

Definition at line 499 of file class.ilInitialisation.php.

References $ilSetting, ilPaymentSettings\_isPaymentEnabled(), and ilContext\usesHTTP().

        {
                global $ilSetting;

                self::initGlobal("ilSetting", "ilSetting", 
                        "Services/Administration/classes/class.ilSetting.php");
                                
                // check correct setup
                if (!$ilSetting->get("setup_ok"))
                {
                        self::abortAndDie("Setup is not completed. Please run setup routine again.");
                }

                // set anonymous user & role id and system role id
                define ("ANONYMOUS_USER_ID", $ilSetting->get("anonymous_user_id"));
                define ("ANONYMOUS_ROLE_ID", $ilSetting->get("anonymous_role_id"));
                define ("SYSTEM_USER_ID", $ilSetting->get("system_user_id"));
                define ("SYSTEM_ROLE_ID", $ilSetting->get("system_role_id"));
                define ("USER_FOLDER_ID", 7);

                // recovery folder
                define ("RECOVERY_FOLDER_ID", $ilSetting->get("recovery_folder_id"));

                // installation id
                define ("IL_INST_ID", $ilSetting->get("inst_id",0));

                // define default suffix replacements
                define ("SUFFIX_REPL_DEFAULT", "php,php3,php4,inc,lang,phtml,htaccess");
                define ("SUFFIX_REPL_ADDITIONAL", $ilSetting->get("suffix_repl_additional"));

                if(ilContext::usesHTTP())
                {
                        self::buildHTTPPath();
                }

                // payment setting
                require_once('Services/Payment/classes/class.ilPaymentSettings.php');
                define('IS_PAYMENT_ENABLED', ilPaymentSettings::_isPaymentEnabled());           
        }

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initStyle()

static ilInitialisation::initStyle ( )

staticprotected

provide $styleDefinition object

Definition at line 542 of file class.ilInitialisation.php.

References $GLOBALS, $ilUser, ilSession\get(), ilPluginAdmin\getPluginObject(), IL_COMP_SERVICE, and ilSession\set().

        {
                global $styleDefinition, $ilPluginAdmin;

                // load style definitions
                self::initGlobal("styleDefinition", "ilStyleDefinition",
                         "./Services/Style/classes/class.ilStyleDefinition.php");

                // add user interface hook for style initialisation
                $pl_names = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_SERVICE, "UIComponent", "uihk");
                foreach ($pl_names as $pl)
                {
                        $ui_plugin = ilPluginAdmin::getPluginObject(IL_COMP_SERVICE, "UIComponent", "uihk", $pl);
                        $gui_class = $ui_plugin->getUIClassInstance();
                        $gui_class->modifyGUI("Services/Init", "init_style", array("styleDefinition" => $styleDefinition));
                }

                $styleDefinition->startParsing();
        }

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initUser()

static ilInitialisation::initUser ( )

staticprotected

Init user / authentification (level 2)

Definition at line 1084 of file class.ilInitialisation.php.

References $_GET, $_POST, $_SESSION, $ilUser, ilSession\_destroy(), ilAuthUtils\_initAuth(), ilSession\SESSION_CLOSE_LOGIN, ilSession\set(), and ilContext\usesHTTP().

        {
                global $ilias, $ilAuth, $ilUser;
                
                if(ilContext::usesHTTP())
                {                                                               
                        // allow login by submitting user data
                        // in query string when DEVMODE is enabled
                        if( DEVMODE
                                && isset($_GET['username']) && strlen($_GET['username'])
                                && isset($_GET['password']) && strlen($_GET['password'])
                        ){
                                $_POST['username'] = $_GET['username'];
                                $_POST['password'] = $_GET['password'];
                        }                                                                               
                }               

                // $ilAuth 
                require_once "Auth/Auth.php";
                require_once "./Services/AuthShibboleth/classes/class.ilShibboleth.php";                
                include_once("./Services/Authentication/classes/class.ilAuthUtils.php");
                ilAuthUtils::_initAuth();
                $ilias->auth = $ilAuth;

                // $ilUser 
                self::initGlobal("ilUser", "ilObjUser", 
                        "./Services/User/classes/class.ilObjUser.php");
                $ilias->account =& $ilUser;
                                
                self::initAccessHandling();

                
                // force login
                if ((isset($_GET["cmd"]) && $_GET["cmd"] == "force_login"))
                {                       
                        $ilAuth->logout();
                        
                        // we need to do this for the session statistics
                        // could we use session_destroy() instead?
                        // [this is done after every $ilAuth->logout() call elsewhere] 
                        ilSession::_destroy(session_id(), ilSession::SESSION_CLOSE_LOGIN);

                        // :TODO: keep session because of cart content?
                        if(!isset($_GET['forceShoppingCartRedirect']))
                        {
                                $_SESSION = array();
                        }
                        else
                        {
                                ilSession::set("AccountId", "");        
                        }
                }               
                
        }

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redirect()

static ilInitialisation::redirect (   $a_target,   $a_message_id,   $a_message_static  )

staticprotected

Redirects to target url if context supports it.

Parameters

string	$a_target
string	$a_message_id
array	$a_message_details

Definition at line 1470 of file class.ilInitialisation.php.

References ilContext\hasHTML(), ilUtil\redirect(), ilContext\supportsRedirects(), and ilContext\usesHTTP().

        {               
                // #12739
                if(defined("ILIAS_HTTP_PATH") &&
                        !stristr($a_target, ILIAS_HTTP_PATH))
                {
                        $a_target = ILIAS_HTTP_PATH."/".$a_target;
                }
                
                if(ilContext::supportsRedirects())
                {
                        ilUtil::redirect($a_target);
                }               
                else
                {                       
                        $message = self::translateMessage($a_message_id, $a_message_static);
                        
                        // user-directed linked message
                        if(ilContext::usesHTTP() && ilContext::hasHTML())
                        {                                                               
                                $link = self::translateMessage("init_error_redirect_click", 
                                        array("en" => 'Please click to continue.',
                                                "de" => 'Bitte klicken um fortzufahren.'));                             
                                $mess = $message.
                                        '<br /><a href="'.$a_target.'">'.$link.'</a>';                                  
                        }
                        // plain text 
                        else
                        {                                                                       
                                // not much we can do here
                                $mess = $message;               
                                
                                if(!trim($mess))
                                {
                                        $mess = self::translateMessage("init_error_redirect_info", 
                                                array("en" => 'Redirect not supported by context.',
                                                        "de" => 'Weiterleitungen werden durch Kontext nicht unterstützt.')).
                                        ' ('.$a_target.')';                                     
                                }
                        }
                                                                        
                        self::abortAndDie($mess);                       
                }
        }

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removeUnsafeCharacters()

static ilInitialisation::removeUnsafeCharacters ( )

staticprotected

Remove unsafe characters from GET.

Definition at line 32 of file class.ilInitialisation.php.

References $_GET.

        {
                // Remove unsafe characters from GET parameters.
                // We do not need this characters in any case, so it is
                // feasible to filter them everytime. POST parameters
                // need attention through ilUtil::stripSlashes() and similar functions)
                if (is_array($_GET))
                {
                        foreach($_GET as $k => $v)
                        {
                                // \r\n used for IMAP MX Injection
                                // ' used for SQL Injection
                                $_GET[$k] = str_replace(array("\x00", "\n", "\r", "\\", "'", '"', "\x1a"), "", $v);

                                // this one is for XSS of any kind
                                $_GET[$k] = strip_tags($_GET[$k]);
                        }
                }
        }

requireCommonIncludes()

static ilInitialisation::requireCommonIncludes ( )

staticprotected

get common include code files

Definition at line 55 of file class.ilInitialisation.php.

References ilContext\usesTemplate().

        {                       
                // pear
                require_once("include/inc.get_pear.php");
                require_once("include/inc.check_pear.php");
                require_once "PEAR.php";
                
                // ilTemplate
                if(ilContext::usesTemplate())
                {
                        // HTML_Template_IT support
                        @include_once "HTML/Template/ITX.php";          // new implementation
                        if (class_exists("HTML_Template_ITX"))
                        {
                                include_once "./Services/UICore/classes/class.ilTemplateHTMLITX.php";
                        }
                        else
                        {
                                include_once "HTML/ITX.php";            // old implementation
                                include_once "./Services/UICore/classes/class.ilTemplateITX.php";
                        }
                        require_once "./Services/UICore/classes/class.ilTemplate.php";
                }               
                                
                // really always required?
                require_once "./Services/Utilities/classes/class.ilUtil.php";   
                require_once "./Services/Utilities/classes/class.ilFormat.php";
                require_once "./Services/Calendar/classes/class.ilDatePresentation.php";                                                                                                                
                require_once "include/inc.ilias_version.php";   
                
                self::initGlobal("ilBench", "ilBenchmark", "./Services/Utilities/classes/class.ilBenchmark.php");                               
        }

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setCookieParams()

static ilInitialisation::setCookieParams ( )

staticprotected

set session cookie params for path, domain, etc.

Definition at line 444 of file class.ilInitialisation.php.

References $GLOBALS, ilAuthFactory\CONTEXT_HTTP, ilAuthFactory\getContext(), and IL_COOKIE_PATH.

        {
                include_once 'Services/Authentication/classes/class.ilAuthFactory.php';
                if(ilAuthFactory::getContext() == ilAuthFactory::CONTEXT_HTTP) 
                {
                        $cookie_path = '/';
                }
                elseif ($GLOBALS['COOKIE_PATH'])
                {
                        // use a predefined cookie path from WebAccessChecker
                $cookie_path = $GLOBALS['COOKIE_PATH'];
            }
                else
                {
                        $cookie_path = dirname( $_SERVER['PHP_SELF'] );
                }
                
                /* if ilias is called directly within the docroot $cookie_path
                is set to '/' expecting on servers running under windows..
                here it is set to '\'.
                in both cases a further '/' won't be appended due to the following regex
                */
                $cookie_path .= (!preg_match("/[\/|\\\\]$/", $cookie_path)) ? "/" : "";
                
                if($cookie_path == "\\") $cookie_path = '/';
                
                define('IL_COOKIE_EXPIRE',0);
                define('IL_COOKIE_PATH',$cookie_path);
                define('IL_COOKIE_DOMAIN','');
                define('IL_COOKIE_SECURE',false); // Default Value

                // session_set_cookie_params() supports 5th parameter
                // only for php version 5.2.0 and above
                if( version_compare(PHP_VERSION, '5.2.0', '>=') )
                {
                        // PHP version >= 5.2.0
                        define('IL_COOKIE_HTTPONLY',true); // Default Value
                        session_set_cookie_params(
                                        IL_COOKIE_EXPIRE, IL_COOKIE_PATH, IL_COOKIE_DOMAIN, IL_COOKIE_SECURE, IL_COOKIE_HTTPONLY
                        );
                }
                else
                {
                        // PHP version < 5.2.0
                        session_set_cookie_params(
                                        IL_COOKIE_EXPIRE, IL_COOKIE_PATH, IL_COOKIE_DOMAIN, IL_COOKIE_SECURE
                        );
                }
        }

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setSessionHandler()

static ilInitialisation::setSessionHandler ( )

static

set session handler to db

Used in Soap/CAS

Definition at line 420 of file class.ilInitialisation.php.

References ilSession\_exists().

Referenced by CASClient\renameSession().

        {
                if(ini_get('session.save_handler') != 'user')
                {
                        ini_set("session.save_handler", "user");
                }
                
                require_once "Services/Authentication/classes/class.ilSessionDBHandler.php";
                $db_session_handler = new ilSessionDBHandler();
                if (!$db_session_handler->setSaveHandler())
                {
                        self::abortAndDie("Please turn off Safe mode OR set session.save_handler to \"user\" in your php.ini");
                }
                                                
                // Do not accept external session ids
                if (!ilSession::_exists(session_id()) && !defined('IL_PHPUNIT_TEST'))
                {
                        session_regenerate_id();
                }                               
        }

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showingLoginForm()

static ilInitialisation::showingLoginForm (   $a_current_script )

staticprotected

Is current view the login form?

Returns

boolean

Definition at line 1386 of file class.ilInitialisation.php.

References $_REQUEST.

        {               
                if($a_current_script == "login.php")
                {
                        return true;
                }
                
                if($_REQUEST["baseClass"] == "ilStartUpGUI" && 
                        self::getCurrentCmd() == "showLogin")
                {       
                        return true;                                    
                }
                
                return false;
        }

translateMessage()

static ilInitialisation::translateMessage (   $a_message_id, array  $a_message_static = null  )

staticprotected

Translate message if possible.

Parameters

string	$a_message_id
array	$a_message_static

Returns

string

Definition at line 1409 of file class.ilInitialisation.php.

References $_REQUEST, $ilSetting, $ilUser, $lang, and $lng.

        {
                global $ilDB, $lng, $ilSetting, $ilClientIniFile, $ilUser;
                        
                // current language
                if(!$lng)
                {
                        $lang = "en";
                        if($ilUser)
                        {
                                $lang = $ilUser->getLanguage();
                        }
                        else if($_REQUEST["lang"])
                        {
                                $lang = (string)$_REQUEST["lang"];
                        }
                        else if($ilSetting)
                        {
                                $lang = $ilSetting->get("language");
                        }
                        else if($ilClientIniFile)
                        {
                                $lang = $ilClientIniFile->readVariable("language", "default");
                        }                       
                }
                else
                {
                        $lang = $lng->getLangKey();
                }

                $message = "";
                if($ilDB && $a_message_id)
                {       
                        if(!$lng)
                        {
                                require_once "./Services/Language/classes/class.ilLanguage.php";
                                $lng = new ilLanguage($lang);
                        }
                                        
                        $lng->loadLanguageModule("init");
                        $message = $lng->txt($a_message_id);    
                }
                else if(is_array($a_message_static))
                {
                        if(!isset($a_message_static[$lang]))
                        {
                                $lang = "en";
                        }
                        $message = $a_message_static[$lang];
                }
        
                return utf8_decode($message);
        }

---

The documentation for this class was generated from the following file:

• Services/Init/classes/class.ilInitialisation.php