/*
 *   Licensed to the Apache Software Foundation (ASF) under one
 *   or more contributor license agreements.  See the NOTICE file
 *   distributed with this work for additional information
 *   regarding copyright ownership.  The ASF licenses this file
 *   to you under the Apache License, Version 2.0 (the
 *   "License"); you may not use this file except in compliance
 *   with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing,
 *   software distributed under the License is distributed on an
 *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *   KIND, either express or implied.  See the License for the
 *   specific language governing permissions and limitations
 *   under the License.
 *
 */
package org.apache.directory.kerberos.client;

import java.io.File;
import java.util.Collections;

import org.apache.directory.server.kerberos.shared.keytab.Keytab;
import org.apache.directory.server.kerberos.shared.keytab.KeytabEntry;
import org.apache.directory.shared.kerberos.KerberosTime;
import org.apache.directory.shared.kerberos.codec.types.PrincipalNameType;

/**
 * Creates a Keytab from the TgTicket.
 *
 * @author <a href="mailto:kayyagari@keydap.com">Kiran Ayyagari</a>
 */
public class KeytabMaker
{
    public static void main( String[] args ) throws Exception
    {
        KdcConfig config = new KdcConfig();
        config.setKdcPort( 60088 );

        KdcConnection kdcCon = new KdcConnection( config );
        TgTicket tgt = kdcCon.getTgt( "hnelson@EXAMPLE.COM", "secret" );

        Keytab kt = new Keytab();
        KeytabEntry ke = new KeytabEntry( tgt.getClientName()+"@"+tgt.getRealm(), PrincipalNameType.KRB_NT_PRINCIPAL.getValue(),
                         new KerberosTime( tgt.getStartTime() ), (byte)tgt.getSessionKey().getKeyVersion(), tgt.getSessionKey() );

        kt.setEntries( Collections.singletonList( ke ) );


        kt.write( new File("/tmp/apachedskeytab") );

//        KeytabEncoder encoder = new KeytabEncoder();
//        ByteBuffer buf = encoder.write( kt.getKeytabVersion(), kt.getEntries() );
//        System.out.println(Strings.dumpBytes( buf.array() ));
    }
}