/**
  * update existing user
  *
  * @access protected
  */
 protected function updateUser(ilECSUser $user, $a_local_user_id)
 {
     global $ilClientIniFile, $ilLog, $rbacadmin;
     $user_obj = new ilObjUser($a_local_user_id);
     $user_obj->setFirstname($user->getFirstname());
     $user_obj->setLastname($user->getLastname());
     $user_obj->setEmail($user->getEmail());
     $user_obj->setInstitution($user->getInstitution());
     $user_obj->setActive(true);
     $until = $user_obj->getTimeLimitUntil();
     $user_obj->setTimeLimitFrom(time() - 5);
     if ($until < time() + $ilClientIniFile->readVariable('session', 'expire')) {
         $user_obj->setTimeLimitUntil(time() + $ilClientIniFile->readVariable("session", "expire"));
     }
     $user_obj->update();
     $user_obj->refreshLogin();
     if ($global_role = $this->getCurrentServer()->getGlobalRole()) {
         $rbacadmin->assignUser($this->getCurrentServer()->getGlobalRole(), $user_obj->getId(), true);
     }
     $ilLog->write(__METHOD__ . ': Finished update of remote user with usr_id: ' . $user->getImportId());
     return $user_obj->getLogin();
 }