/* * 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.*;import sun.security.util.*;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 AP-REQ type. * * <xmp> * AP-REQ               ::= [APPLICATION 14] SEQUENCE { *      pvno            [0] INTEGER (5), *      msg-type        [1] INTEGER (14), *      ap-options      [2] APOptions, *      ticket          [3] Ticket, *      authenticator   [4] EncryptedData -- Authenticator * } * </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 APReq {     public int pvno;    public int msgType;    public APOptions apOptions;    public Ticket ticket;    public EncryptedData authenticator;     public APReq(            APOptions new_apOptions,            Ticket new_ticket,            EncryptedData new_authenticator) {        pvno = Krb5.PVNO;        msgType = Krb5.KRB_AP_REQ;        apOptions = new_apOptions;        ticket = new_ticket;        authenticator = new_authenticator;    }     public APReq(byte[] data) throws Asn1Exception, IOException, KrbApErrException, RealmException {        init(new DerValue(data));    }     public APReq(DerValue encoding) throws Asn1Exception, IOException, KrbApErrException, RealmException {        init(encoding);    }     /**     * Initializes an APReq 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,            IOException, KrbApErrException, RealmException {        DerValue der, subDer;        if (((encoding.getTag() & (byte) 0x1F) != Krb5.KRB_AP_REQ)                || (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);        }        pvno = subDer.getData().getBigInteger().intValue();        if (pvno != Krb5.PVNO) {            throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);        }        subDer = der.getData().getDerValue();        if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x01) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        msgType = subDer.getData().getBigInteger().intValue();        if (msgType != Krb5.KRB_AP_REQ) {            throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE);        }        apOptions = APOptions.parse(der.getData(), (byte) 0x02, false);        ticket = Ticket.parse(der.getData(), (byte) 0x03, false);        authenticator = EncryptedData.parse(der.getData(), (byte) 0x04, false);        if (der.getData().available() > 0) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }    }     /**     * Encodes an APReq object.     * @return byte array of encoded APReq 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();        temp.putInteger(BigInteger.valueOf(pvno));        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp);        temp = new DerOutputStream();        temp.putInteger(BigInteger.valueOf(msgType));        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), temp);        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), apOptions.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x03), ticket.asn1Encode());        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x04), authenticator.asn1Encode());        temp = new DerOutputStream();        temp.write(DerValue.tag_Sequence, bytes);        DerOutputStream apreq = new DerOutputStream();        apreq.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x0E), temp);        return apreq.toByteArray();    }}