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	/*
	* 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 KRBSafeBody type.
	*
	* <pre>{@code
	* KRB-SAFE-BODY ::= SEQUENCE {
	* user-data [0] OCTET STRING,
	* timestamp [1] KerberosTime OPTIONAL,
	* usec [2] Microseconds OPTIONAL,
	* seq-number [3] UInt32 OPTIONAL,
	* s-address [4] HostAddress,
	* r-address [5] HostAddress OPTIONAL
	* }
	* }</pre>
	*
	* <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 KRBSafeBody {
	public byte[] userData = null;
	public KerberosTime timestamp; //optional
	public Integer usec; //optional
	public Integer seqNumber; //optional
	public HostAddress sAddress;
	public HostAddress rAddress; //optional

	public KRBSafeBody(
	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;
	}


	/**
	* Constructs a KRBSafeBody object.
	* @param encoding a Der-encoded data.
	* @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 KRBSafeBody(DerValue encoding) throws Asn1Exception, IOException {
	DerValue der;
	if (encoding.getTag() != DerValue.tag_Sequence) {
	throw new Asn1Exception(Krb5.ASN1_BAD_ID);
	}
	der = encoding.getData().getDerValue();
	if ((der.getTag() & 0x1F) == 0x00) {
	userData = der.getData().getOctetString();
	}
	else
	throw new Asn1Exception(Krb5.ASN1_BAD_ID);
	timestamp = KerberosTime.parse(encoding.getData(), (byte)0x01, true);
	if ((encoding.getData().peekByte() & 0x1F) == 0x02) {
	der = encoding.getData().getDerValue();
	usec = new Integer(der.getData().getBigInteger().intValue());
	}
	if ((encoding.getData().peekByte() & 0x1F) == 0x03) {
	der = encoding.getData().getDerValue();
	seqNumber = new Integer(der.getData().getBigInteger().intValue());
	}
	sAddress = HostAddress.parse(encoding.getData(), (byte)0x04, false);
	if (encoding.getData().available() > 0)
	rAddress = HostAddress.parse(encoding.getData(), (byte)0x05, true);
	if (encoding.getData().available() > 0)
	throw new Asn1Exception(Krb5.ASN1_BAD_ID);
	}

	/**
	* Encodes an KRBSafeBody object.
	* @return the byte array of encoded KRBSafeBody 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.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)
	temp = new DerOutputStream();
	temp.write(DerValue.tag_Sequence, bytes);
	return temp.toByteArray();
	}

	/**
	* Parse (unmarshal) a KRBSafeBody 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 indicates if this data field is optional
	* @return an instance of KRBSafeBody.
	*
	*/
	public static KRBSafeBody parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException {
	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 KRBSafeBody(subDer);
	}
	}



	}

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