/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, 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.test;

import java.io.Serializable;
import java.math.BigInteger;
import java.rmi.RemoteException;
import java.security.KeyException;
import java.security.MessageDigest;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.NDC;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.WriterAppender;

import org.jboss.security.Util;
import org.jboss.security.srp.SRPConf;
import org.jboss.security.srp.SRPServerInterface;
import org.jboss.security.srp.SRPClientSession;
import org.jboss.security.srp.SRPParameters;
import org.jboss.security.srp.SRPServerSession;

/** Test of the SRP protocol msg exchange sequence.

@author Scott.Stark@jboss.org
@version $Revision: 103547 $
*/
public class SRPProtocolTestCase extends junit.framework.TestCase
{
   String username = "stark";
   char[] password = "scott".toCharArray();
   SRPServerInterface server;

   public SRPProtocolTestCase(String name)
   {
       super(name);
   }
   public SRPProtocolTestCase(String name, String username, char[] password)
   {
      super(name);
      this.username = username;
      this.password = password;
   }

   protected void setUp() throws Exception
   {
      // Set up a simple configuration that logs on the console.
       Logger root = Logger.getRootLogger();
       root.setLevel(Level.TRACE);
       root.addAppender(new WriterAppender(new PatternLayout("%x%m%n"), System.out));
       Util.init();
       NDC.push("S,");
       server = new SimpleSRPServer(password, "123456");
       NDC.pop();
       NDC.remove();
   }

    public void testProtocol() throws Exception
    {
        SRPParameters params = server.getSRPParameters(username);
        NDC.push("C,");
        SRPClientSession client = new SRPClientSession(username, password, params);
        byte[] A = client.exponential();
        NDC.pop();
        NDC.push("S,");
        byte[] B = server.init(username, A);
        NDC.pop();
        NDC.push("C,");
        byte[] M1 = client.response(B);
        NDC.pop();
        NDC.push("S,");
        byte[] M2 = server.verify(username, M1);
        NDC.pop();
        NDC.push("C,");
        if( client.verify(M2) == false )
            throw new SecurityException("Failed to validate server reply");
        NDC.pop();
        NDC.remove();
    }

    /**
    * @param args the command line arguments
    */
    public static void main(String args[])
    {
        long start = System.currentTimeMillis();
        try
        {
            SRPProtocolTestCase tst = null;
            if( args.length == 0 )
               tst = new SRPProtocolTestCase("main");
            else
               tst = new SRPProtocolTestCase("main", args[0], args[1].toCharArray());

            tst.setUp();
            tst.testProtocol();
        }
        catch(Exception e)
        {
            e.printStackTrace(System.out);
        }
        finally
        {
            long end = System.currentTimeMillis();
            System.out.println("Elapsed time = "+(end - start));
        }
    }

}
