/* * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved. * 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.KrbException; import sun.security.util.*; import sun.security.krb5.Asn1Exception; import java.io.IOException; import java.util.Vector; import sun.security.krb5.internal.util.KerberosString; /** * Implements the ASN.1 PA-DATA type. * *
* This definition reflects the Network Working Group RFC 4120
* specification available at
*
* http://www.ietf.org/rfc/rfc4120.txt.
*/
public class PAData {
private int pADataType;
private byte[] pADataValue = null;
private static final byte TAG_PATYPE = 1;
private static final byte TAG_PAVALUE = 2;
private PAData() {
}
public PAData(int new_pADataType, byte[] new_pADataValue) {
pADataType = new_pADataType;
if (new_pADataValue != null) {
pADataValue = new_pADataValue.clone();
}
}
public Object clone() {
PAData new_pAData = new PAData();
new_pAData.pADataType = pADataType;
if (pADataValue != null) {
new_pAData.pADataValue = new byte[pADataValue.length];
System.arraycopy(pADataValue, 0, new_pAData.pADataValue,
0, pADataValue.length);
}
return new_pAData;
}
/**
* Constructs a PAData 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 PAData(DerValue encoding) throws Asn1Exception, IOException {
DerValue der = null;
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x01) {
this.pADataType = der.getData().getBigInteger().intValue();
}
else
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x02) {
this.pADataValue = der.getData().getOctetString();
}
if (encoding.getData().available() > 0)
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
/**
* Encodes this object to an OutputStream.
*
* @return byte array of the encoded data.
* @exception IOException if an I/O error occurs while reading encoded data.
* @exception Asn1Exception on encoding errors.
*/
public byte[] asn1Encode() throws Asn1Exception, IOException {
DerOutputStream bytes = new DerOutputStream();
DerOutputStream temp = new DerOutputStream();
temp.putInteger(pADataType);
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, TAG_PATYPE), temp);
temp = new DerOutputStream();
temp.putOctetString(pADataValue);
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, TAG_PAVALUE), temp);
temp = new DerOutputStream();
temp.write(DerValue.tag_Sequence, bytes);
return temp.toByteArray();
}
// accessor methods
public int getType() {
return pADataType;
}
public byte[] getValue() {
return ((pADataValue == null) ? null : pADataValue.clone());
}
/**
* Parse (unmarshal) a PAData 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 if an Asn1Exception occurs.
* @param data the Der input stream value, which contains one or more
* marshaled values.
* @param explicitTag tag number.
* @param optional indicates if this data field is optional.
* @return an array of PAData.
*/
public static PAData[] parseSequence(DerInputStream data,
byte explicitTag, boolean optional)
throws Asn1Exception, IOException {
if ((optional) &&
(((byte)data.peekByte() & (byte)0x1F) != explicitTag))
return null;
DerValue subDer = data.getDerValue();
DerValue subsubDer = subDer.getData().getDerValue();
if (subsubDer.getTag() != DerValue.tag_SequenceOf) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
Vector