/*
* 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
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*/
/*
*
* (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 sun.security.krb5.RealmException;
import java.util.Vector;
import java.io.IOException;
import java.math.BigInteger;
/**
* Implements the ASN.1 EncKrbCredPart type.
*
* <xmp>
* EncKrbCredPart ::= [APPLICATION 29] SEQUENCE {
* ticket-info [0] SEQUENCE OF KrbCredInfo,
* nonce [1] UInt32 OPTIONAL,
* timestamp [2] KerberosTime OPTIONAL,
* usec [3] Microseconds OPTIONAL,
* s-address [4] HostAddress OPTIONAL,
* r-address [5] HostAddress OPTIONAL
* }
* </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 EncKrbCredPart {
public KrbCredInfo[] ticketInfo = null;
public KerberosTime timeStamp; //optional
private Integer nonce; //optional
private Integer usec; //optional
private HostAddress sAddress; //optional
private HostAddresses rAddress; //optional
public EncKrbCredPart(
KrbCredInfo[] new_ticketInfo,
KerberosTime new_timeStamp,
Integer new_usec,
Integer new_nonce,
HostAddress new_sAddress,
HostAddresses new_rAddress) throws IOException {
if (new_ticketInfo != null) {
ticketInfo = new KrbCredInfo[new_ticketInfo.length];
for (int i = 0; i < new_ticketInfo.length; i++) {
if (new_ticketInfo[i] == null) {
throw new IOException("Cannot create a EncKrbCredPart");
} else {
ticketInfo[i] = (KrbCredInfo) new_ticketInfo[i].clone();
}
}
}
timeStamp = new_timeStamp;
usec = new_usec;
nonce = new_nonce;
sAddress = new_sAddress;
rAddress = new_rAddress;
}
public EncKrbCredPart(byte[] data) throws Asn1Exception,
IOException, RealmException {
init(new DerValue(data));
}
public EncKrbCredPart(DerValue encoding) throws Asn1Exception,
IOException, RealmException {
init(encoding);
}
/**
* Initializes an EncKrbCredPart 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 RealmException if an error occurs while parsing a Realm object.
*/
private void init(DerValue encoding) throws Asn1Exception,
IOException, RealmException {
DerValue der, subDer;
//may not be the correct error code for a tag
//mismatch on an encrypted structure
nonce = null;
timeStamp = null;
usec = null;
sAddress = null;
rAddress = null;
if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1D)
|| (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) {
DerValue derValues[] = subDer.getData().getSequence(1);
ticketInfo = new KrbCredInfo[derValues.length];
for (int i = 0; i < derValues.length; i++) {
ticketInfo[i] = new KrbCredInfo(derValues[i]);
}
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
if (der.getData().available() > 0) {
if (((byte) (der.getData().peekByte()) & (byte) 0x1F) == (byte) 0x01) {
subDer = der.getData().getDerValue();
nonce = new Integer(subDer.getData().getBigInteger().intValue());
}
}
if (der.getData().available() > 0) {
timeStamp = KerberosTime.parse(der.getData(), (byte) 0x02, true);
}
if (der.getData().available() > 0) {
if (((byte) (der.getData().peekByte()) & (byte) 0x1F) == (byte) 0x03) {
subDer = der.getData().getDerValue();
usec = new Integer(subDer.getData().getBigInteger().intValue());
}
}
if (der.getData().available() > 0) {
sAddress = HostAddress.parse(der.getData(), (byte) 0x04, true);
}
if (der.getData().available() > 0) {
rAddress = HostAddresses.parse(der.getData(), (byte) 0x05, true);
}
if (der.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Encodes an EncKrbCredPart object.
* @return byte array of encoded EncKrbCredPart 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[] tickets = new DerValue[ticketInfo.length];
for (int i = 0; i < ticketInfo.length; i++) {
tickets[i] = new DerValue(ticketInfo[i].asn1Encode());
}
temp.putSequence(tickets);
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, (byte) 0x00), temp);
if (nonce != null) {
temp = new DerOutputStream();
temp.putInteger(BigInteger.valueOf(nonce.intValue()));
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, (byte) 0x01), temp);
}
if (timeStamp != null) {
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, (byte) 0x02), timeStamp.asn1Encode());
}
if (usec != null) {
temp = new DerOutputStream();
temp.putInteger(BigInteger.valueOf(usec.intValue()));
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, (byte) 0x03), temp);
}
if (sAddress != null) {
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) 0x1D), temp);
return bytes.toByteArray();
}
}