diff --git a/src/IDF/Views.php b/src/IDF/Views.php
index 03d8680..82afccb 100644
--- a/src/IDF/Views.php
+++ b/src/IDF/Views.php
@@ -20,7 +20,6 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #
 # ***** END LICENSE BLOCK ***** */
-
 Pluf::loadFunction('Pluf_HTTP_URL_urlForView');
 Pluf::loadFunction('Pluf_Shortcuts_RenderToResponse');
 Pluf::loadFunction('Pluf_Shortcuts_GetObjectOr404');
@@ -31,12 +30,44 @@ Pluf::loadFunction('Pluf_Shortcuts_GetFormForModel');
  */
 class IDF_Views
 {
+
+   public function checkNewUser($login)
+    {
+	$ldapOnly = Pluf::f('ldap_only');
+        $ldapHost = Pluf::f('ldap_host_port');
+        $binddn = Pluf::f('ldap_user');
+	$bindpass = Pluf::f('ldap_password');
+        $dn = Pluf::f('ldap_baseDn');
+        $version= Pluf::f('ldap_version');
+	$key = Pluf::f('ldap_primaryKey');		
+	if ($ldapOnly)
+	{
+    	    $ds=ldap_connect($ldapHost);
+            ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, $version);
+	    $result=@ldap_bind($ds,$binddn,$bindpass);
+       
+    	    if ($result)
+	    {
+    		$filter = "(uid=$login)";
+		$sr = ldap_search($ds, $dn, $filter); //the search result
+		$entry = ldap_first_entry($ds, $sr);  //returns the first entry of the search result 
+		$countE = ldap_get_entries($ds,$sr);
+		if ($countE["count"] === 1) {
+		    return true;
+		} else return false;
+		ldap_close($ds);
+	    } else return false;
+	} else return false;
+    }
+    
+    
     /**
      * List all the projects managed by InDefero.
      *
      * Only the public projects are listed or the private with correct
      * rights.
      */
+     
     public function index($request, $match)
     {
         $projects = self::getProjects($request->user);
@@ -46,6 +77,7 @@ class IDF_Views
                                                $request);
     }
 
+
     /**
      * Login view.
      */
@@ -54,9 +86,11 @@ class IDF_Views
         if (isset($request->POST['action']) 
             and $request->POST['action'] == 'new-user') {
             $login = (isset($request->POST['login'])) ? $request->POST['login'] : '';
-            $url = Pluf_HTTP_URL_urlForView('IDF_Views::register', array(),
+	    if ($this->checkNewUser($login)){
+                $url = Pluf_HTTP_URL_urlForView('IDF_Views::register', array(),
                                             array('login' => $login));
-            return new Pluf_HTTP_Response_Redirect($url);
+	        return new Pluf_HTTP_Response_Redirect($url);
+	    }
         }
         $v = new Pluf_Views();
         $request->POST['login'] = (isset($request->POST['login'])) ? mb_strtolower($request->POST['login']) : '';