/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * *  (C) Copyright IBM Corp. 1999 All Rights Reserved. *  Copyright 1997 The Open Group Research Institute.  All rights reserved. */ package sun.security.krb5.internal; import sun.security.krb5.PrincipalName;import sun.security.krb5.EncryptedData;import sun.security.krb5.Asn1Exception;import sun.security.krb5.Realm;import sun.security.krb5.RealmException;import sun.security.util.*;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 Ticket type. * * <xmp> * Ticket               ::= [APPLICATION 1] SEQUENCE { *      tkt-vno         [0] INTEGER (5), *      realm           [1] Realm, *      sname           [2] PrincipalName, *      enc-part        [3] EncryptedData -- EncTicketPart * } * </xmp> * * <p> * This definition reflects the Network Working Group RFC 4120 * specification available at * <a href="http://www.ietf.org/rfc/rfc4120.txt"> * http://www.ietf.org/rfc/rfc4120.txt</a>. */ public class Ticket implements Cloneable {    public int tkt_vno;    public Realm realm;    public PrincipalName sname;    public EncryptedData encPart;     private Ticket() {    }     public Object clone() {        Ticket new_ticket = new Ticket();        new_ticket.realm = (Realm)realm.clone();        new_ticket.sname = (PrincipalName)sname.clone();        new_ticket.encPart = (EncryptedData)encPart.clone();        new_ticket.tkt_vno = tkt_vno;        return new_ticket;    }     public Ticket(                  Realm new_realm,                  PrincipalName new_sname,                  EncryptedData new_encPart                      ) {        tkt_vno = Krb5.TICKET_VNO;        realm = new_realm;        sname = new_sname;        encPart = new_encPart;    }     public Ticket(byte[] data) throws Asn1Exception,    RealmException, KrbApErrException, IOException {        init(new DerValue(data));    }     public Ticket(DerValue encoding) throws Asn1Exception,    RealmException, KrbApErrException, IOException {        init(encoding);    }     /**     * Initializes a Ticket object.     * @param encoding a single DER-encoded value.     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.     * @exception IOException if an I/O error occurs while reading encoded data.     * @exception KrbApErrException if the value read from the DER-encoded data stream does not match the pre-defined value.     * @exception RealmException if an error occurs while parsing a Realm object.     */     private void init(DerValue encoding) throws Asn1Exception,    RealmException, KrbApErrException, IOException {        DerValue der;        DerValue subDer;        if (((encoding.getTag() & (byte)0x1F) != Krb5.KRB_TKT)            || (encoding.isApplication() != true)            || (encoding.isConstructed() != true))            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        der = encoding.getData().getDerValue();        if (der.getTag() != DerValue.tag_Sequence)            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        subDer = der.getData().getDerValue();        if ((subDer.getTag() & (byte)0x1F) != (byte)0x00)            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        tkt_vno = subDer.getData().getBigInteger().intValue();        if (tkt_vno != Krb5.TICKET_VNO)            throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);        realm = Realm.parse(der.getData(), (byte)0x01, false);        sname = PrincipalName.parse(der.getData(), (byte)0x02, false);        encPart = EncryptedData.parse(der.getData(), (byte)0x03, false);        if (der.getData().available() > 0)            throw new Asn1Exception(Krb5.ASN1_BAD_ID);    }     /**     * Encodes a Ticket object.     * @return byte array of encoded ticket object.     * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.     * @exception IOException if an I/O error occurs while reading encoded data.     */    public byte[] asn1Encode() throws Asn1Exception, IOException {        DerOutputStream bytes = new DerOutputStream();        DerOutputStream temp = new DerOutputStream();        DerValue der[] = new DerValue[4];        temp.putInteger(BigInteger.valueOf(tkt_vno));        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp);        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), realm.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), sname.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), encPart.asn1Encode());        temp = new DerOutputStream();        temp.write(DerValue.tag_Sequence, bytes);        DerOutputStream ticket = new DerOutputStream();        ticket.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x01), temp);        return ticket.toByteArray();    }     /**     * Parse (unmarshal) a Ticket from a DER input stream.  This form     * parsing might be used when expanding a value which is part of     * a constructed sequence and uses explicitly tagged type.     *     * @exception Asn1Exception on error.     * @param data the Der input stream value, which contains one or more marshaled value.     * @param explicitTag tag number.     * @param optional indicate if this data field is optional     * @return an instance of Ticket.     */    public static Ticket parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException, RealmException, KrbApErrException {        if ((optional) && (((byte)data.peekByte() & (byte)0x1F)!= explicitTag))            return null;        DerValue der = data.getDerValue();        if (explicitTag != (der.getTag() & (byte)0x1F))  {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        else {            DerValue subDer = der.getData().getDerValue();            return new Ticket(subDer);        }    }  }