/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.security.auth.spi;

import java.security.acl.Group;
import javax.security.auth.login.LoginException;

import org.jboss.security.SimpleGroup;
import org.jboss.security.auth.spi.UsernamePasswordLoginModule;

/**
 * A simple login module that simply allows for the specification of the
 * identity of unauthenticated users via the unauthenticatedIdentity property.
 *
 * @author Scott.Stark@jboss.org
 * @version $Revision: 57203 $
 */
public class AnonLoginModule extends UsernamePasswordLoginModule
{
   /**
    * Override to return an empty Roles set.
    * @return an array comtaning an empty 'Roles' Group.
    */
   protected Group[] getRoleSets() throws LoginException
   {
      SimpleGroup roles = new SimpleGroup("Roles");
      Group[] roleSets = {roles};
      return roleSets;
   }

   /**
    * Overriden to return null.
    * @return null always
    */
   protected String getUsersPassword() throws LoginException
   {
      return null;
   }
}
