- core/Auth_Controller does NOT load anymore hlp_authentication helper

- Added function getAuthPersonId to hlp_authentication helper
- Added function isLogged to hlp_common helper
- hlp_authentication helper functions getAuthPersonId and getAuthUID make use of isLogged function
- AuthLib loads hlp_authentication helper after a successful login or if a user is already logged
- FilterLib does NOT load anymore hlp_authentication helper
- FilterLib does NOT use anymore BenutzerModel and getAuthUID, but retrieves user data directly using the person_id from getAuthPersonId

application/helpers/hlp_authentication_helper.php

@@ -2,20 +2,35 @@
 
 if (!defined('BASEPATH')) exit('No direct script access allowed');
 
-// ------------------------------------------------------------------------
+// -----------------------------------------------------------------------------------------------------
 // Functions needed to manage the user authentication
-// ------------------------------------------------------------------------
+// NOTE: the following functions do NOT prompt a login page if the user is NOT logged in
+// -----------------------------------------------------------------------------------------------------
 
 /**
- * It calls the AuthLib, if the user is NOT logged then the login page is shown
+ * If the user is NOT logged then a null value is returned.
+ * If the user is alredy logged, then it is possible to access to the authentication object
+ * that contains the person_id of the logged user
+ * NOTE: if a user is logged then a person_id is always present!
+ */
+function getAuthPersonId()
+{
+	$ci =& get_instance(); // get CI instance
+
+	return isLogged() ? ($ci->authlib->getAuthObj())->{AuthLib::AO_PERSON_ID} : null;
+}
+
+
+/**
+ * If the user is NOT logged then a null value is returned.
  * If the user is alredy logged, then it is possible to access to the authentication object
  * that contains the username of the logged user
- *
- * @return string or null
+ * NOTE: if the user is logged with a "foreign" method (ex. Bewerbungstool),
+ *		then it is possible that the username is null!
  */
 function getAuthUID()
 {
 	$ci =& get_instance(); // get CI instance
 
-	return ($ci->authlib->getAuthObj())->{AuthLib::AO_USERNAME};
+	return isLogged() ? ($ci->authlib->getAuthObj())->{AuthLib::AO_USERNAME} : null;
 }

application/helpers/hlp_common_helper.php

@@ -224,3 +224,19 @@ function isDateWorkingDay($date, $days = null)
 			return true;
 	}
 }
+
+/**
+ * Checks if the current user is logged by checking that the AuthLib is loaded and
+ * it is present the authentication object in session
+ * NOTE: it is placed here instead of being placed in the helper hlp_authentication_helper
+ *		because hlp_authentication_helper is loaded after the authentication.
+ *		It is very useful to use this function even in those parts of the code that are accessible
+ *		even when a user is NOT authenticated!!!
+ *		If and only if this function returns true, then all the functions present in hlp_authentication_helper can be used!
+ */
+function isLogged()
+{
+	$ci =& get_instance(); // get CI instance
+
+	return isset($ci->authlib) && $ci->authlib->getAuthObj() != null;
+}