/* * 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.util.*;import sun.security.krb5.Asn1Exception;import java.util.Vector;import java.io.IOException;import java.math.BigInteger; /** * Implements the ASN.1 EncKrbPrivPart type. * * <xmp> * EncKrbPrivPart  ::= [APPLICATION 28] SEQUENCE { *         user-data       [0] OCTET STRING, *         timestamp       [1] KerberosTime OPTIONAL, *         usec            [2] Microseconds OPTIONAL, *         seq-number      [3] UInt32 OPTIONAL, *         s-address       [4] HostAddress -- sender's addr --, *         r-address       [5] HostAddress OPTIONAL -- recip's addr * } * </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 EncKrbPrivPart {     public byte[] userData = null;    public KerberosTime timestamp; //optional    public Integer usec; //optional    public Integer seqNumber; //optional    public HostAddress sAddress; //optional    public HostAddress rAddress; //optional     public EncKrbPrivPart(            byte[] new_userData,            KerberosTime new_timestamp,            Integer new_usec,            Integer new_seqNumber,            HostAddress new_sAddress,            HostAddress new_rAddress) {        if (new_userData != null) {            userData = new_userData.clone();        }        timestamp = new_timestamp;        usec = new_usec;        seqNumber = new_seqNumber;        sAddress = new_sAddress;        rAddress = new_rAddress;    }     public EncKrbPrivPart(byte[] data) throws Asn1Exception, IOException {        init(new DerValue(data));    }     public EncKrbPrivPart(DerValue encoding) throws Asn1Exception, IOException {        init(encoding);    }     /**     * Initializes an EncKrbPrivPart 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.     */    private void init(DerValue encoding) throws Asn1Exception, IOException {        DerValue der, subDer;        if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1C)                || (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) {            userData = subDer.getData().getOctetString();        } else {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }        timestamp = KerberosTime.parse(der.getData(), (byte) 0x01, true);        if ((der.getData().peekByte() & 0x1F) == 0x02) {            subDer = der.getData().getDerValue();            usec = new Integer(subDer.getData().getBigInteger().intValue());        } else {            usec = null;        }        if ((der.getData().peekByte() & 0x1F) == 0x03) {            subDer = der.getData().getDerValue();            seqNumber = new Integer(subDer.getData().getBigInteger().intValue());        } else {            seqNumber = null;        }        sAddress = HostAddress.parse(der.getData(), (byte) 0x04, false);        if (der.getData().available() > 0) {            rAddress = HostAddress.parse(der.getData(), (byte) 0x05, true);        }        if (der.getData().available() > 0) {            throw new Asn1Exception(Krb5.ASN1_BAD_ID);        }    }     /**     * Encodes an EncKrbPrivPart object.     * @return byte array of encoded EncKrbPrivPart 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 temp = new DerOutputStream();        DerOutputStream bytes = new DerOutputStream();         temp.putOctetString(userData);        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp);        if (timestamp != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), timestamp.asn1Encode());        }        if (usec != null) {            temp = new DerOutputStream();            temp.putInteger(BigInteger.valueOf(usec.intValue()));            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), temp);        }        if (seqNumber != null) {            temp = new DerOutputStream();            // encode as an unsigned integer (UInt32)            temp.putInteger(BigInteger.valueOf(seqNumber.longValue()));            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x03), temp);        }        bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x04), sAddress.asn1Encode());        if (rAddress != null) {            bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x05), rAddress.asn1Encode());        }        temp = new DerOutputStream();        temp.write(DerValue.tag_Sequence, bytes);        bytes = new DerOutputStream();        bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x1C), temp);        return bytes.toByteArray();    }}