Adding api_protect_course_script in ajax calls

main/inc/ajax/document.ajax.php

@@ -4,9 +4,9 @@
  * Responses to AJAX calls for the document upload 
  */
 require_once '../global.inc.php';
-if (api_is_anonymous()) {
-    exit;
-}
+
+api_protect_course_script(true);
+
 if(!empty($_FILES)) {
     require_once api_get_path(LIBRARY_PATH).'document.lib.php';
     require_once api_get_path(LIBRARY_PATH).'fileDisplay.lib.php';

main/inc/ajax/exercise.ajax.php

@@ -4,9 +4,8 @@
  * Responses to AJAX calls
  */
 require_once '../global.inc.php';
-if (api_is_anonymous()) {
-    exit;
-}
+
+api_protect_course_script(true);
 
 $action = $_REQUEST['a'];
 

main/inc/ajax/thematic.ajax.php

@@ -8,6 +8,8 @@ require_once '../global.inc.php';
 require_once api_get_path(LIBRARY_PATH).'attendance.lib.php';
 require_once api_get_path(LIBRARY_PATH).'thematic.lib.php';
 
+api_protect_course_script(true);
+
 $action = $_GET['a'];
 
 switch ($action) {