/*
* 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.server.kerberos.shared.io.encoder;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.apache.directory.server.kerberos.shared.messages.components.Ticket;
import org.apache.directory.shared.asn1.der.ASN1OutputStream;
import org.apache.directory.shared.asn1.der.DERApplicationSpecific;
import org.apache.directory.shared.asn1.der.DERGeneralString;
import org.apache.directory.shared.asn1.der.DERInteger;
import org.apache.directory.shared.asn1.der.DERSequence;
import org.apache.directory.shared.asn1.der.DERTaggedObject;
/**
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev: 589780 $, $Date: 2007-10-29 19:14:59 +0100 (Lun, 29 oct 2007) $
*/
public class TicketEncoder
{
/**
* Encodes a {@link Ticket} into a its ASN.1 DER encoding.
*
* @param ticket
* @return The byte[] containing the ASN.1 DER encoding of the {@link Ticket}.
* @throws IOException
*/
public static byte[] encodeTicket( Ticket ticket ) throws IOException
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ASN1OutputStream aos = new ASN1OutputStream( baos );
aos.writeObject( encode( ticket ) );
aos.close();
return baos.toByteArray();
}
/**
* Ticket ::= [APPLICATION 1] SEQUENCE {
* tkt-vno[0] INTEGER,
* realm[1] Realm,
* sname[2] PrincipalName,
* enc-part[3] EncryptedData
* }
*/
protected static DERApplicationSpecific encode( Ticket ticket )
{
DERSequence vector = new DERSequence();
vector.add( new DERTaggedObject( 0, DERInteger.valueOf( ticket.getTktVno() ) ) );
vector.add( new DERTaggedObject( 1, DERGeneralString.valueOf( ticket.getRealm() ) ) );
vector.add( new DERTaggedObject( 2, PrincipalNameEncoder.encode( ticket.getSName() ) ) );
vector.add( new DERTaggedObject( 3, EncryptedDataEncoder.encodeSequence( ticket.getEncPart() ) ) );
DERApplicationSpecific ticketSequence = null;
try
{
ticketSequence = DERApplicationSpecific.valueOf( 1, vector );
}
catch ( Exception e )
{
e.printStackTrace();
}
return ticketSequence;
}
protected static DERSequence encodeSequence( Ticket[] tickets )
{
DERSequence outerVector = new DERSequence();
for ( int ii = 0; ii < tickets.length; ii++ )
{
DERSequence vector = new DERSequence();
vector.add( encode( tickets[ii] ) );
outerVector.add( vector );
}
return outerVector;
}
}