if (userGroupServiceName!=null) {
try {
GeoServerUserGroupService service = getSecurityManager().loadUserGroupService(userGroupServiceName);
details = service.loadUserByUsername(user);
if (details.isEnabled()==false) {
log (new DisabledException("User "+user+" is disabled"));
return null;
}
} catch (IOException ex ) {
log(new AuthenticationServiceException(ex.getLocalizedMessage(),ex));
return null;