J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3 | * |
| 4 | * This code is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License version 2 only, as |
| 6 | * published by the Free Software Foundation. Sun designates this |
| 7 | * particular file as subject to the "Classpath" exception as provided |
| 8 | * by Sun in the LICENSE file that accompanied this code. |
| 9 | * |
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| 14 | * accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License version |
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * |
| 27 | * (C) Copyright IBM Corp. 1999 All Rights Reserved. |
| 28 | * Copyright 1997 The Open Group Research Institute. All rights reserved. |
| 29 | */ |
| 30 | |
| 31 | package sun.security.krb5.internal; |
| 32 | |
| 33 | import sun.security.util.*; |
| 34 | import sun.security.krb5.Asn1Exception; |
| 35 | import java.io.IOException; |
| 36 | import java.math.BigInteger; |
| 37 | |
| 38 | /** |
| 39 | * Implements the ASN.1 PAEncTSEnc type. |
| 40 | * |
| 41 | * <xmp> |
| 42 | * PA-ENC-TS-ENC ::= SEQUENCE { |
| 43 | * patimestamp [0] KerberosTime -- client's time --, |
| 44 | * pausec [1] Microseconds OPTIONAL |
| 45 | * } |
| 46 | * </xmp> |
| 47 | * |
| 48 | * <p> |
| 49 | * This definition reflects the Network Working Group RFC 4120 |
| 50 | * specification available at |
| 51 | * <a href="http://www.ietf.org/rfc/rfc4120.txt"> |
| 52 | * http://www.ietf.org/rfc/rfc4120.txt</a>. |
| 53 | */ |
| 54 | |
| 55 | public class PAEncTSEnc { |
| 56 | public KerberosTime pATimeStamp; |
| 57 | public Integer pAUSec; //optional |
| 58 | |
| 59 | public PAEncTSEnc( |
| 60 | KerberosTime new_pATimeStamp, |
| 61 | Integer new_pAUSec |
| 62 | ) { |
| 63 | pATimeStamp = new_pATimeStamp; |
| 64 | pAUSec = new_pAUSec; |
| 65 | } |
| 66 | |
| 67 | public PAEncTSEnc() { |
| 68 | KerberosTime now = new KerberosTime(KerberosTime.NOW); |
| 69 | pATimeStamp = now; |
| 70 | pAUSec = new Integer(now.getMicroSeconds()); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Constructs a PAEncTSEnc object. |
| 75 | * @param encoding a Der-encoded data. |
| 76 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
| 77 | * @exception IOException if an I/O error occurs while reading encoded data. |
| 78 | */ |
| 79 | public PAEncTSEnc(DerValue encoding) throws Asn1Exception, IOException { |
| 80 | DerValue der; |
| 81 | if (encoding.getTag() != DerValue.tag_Sequence) { |
| 82 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| 83 | } |
| 84 | pATimeStamp = KerberosTime.parse(encoding.getData(), (byte)0x00, false); |
| 85 | if (encoding.getData().available() > 0) { |
| 86 | der = encoding.getData().getDerValue(); |
| 87 | if ((der.getTag() & 0x1F) == 0x01) { |
| 88 | pAUSec = new Integer(der.getData().getBigInteger().intValue()); |
| 89 | } |
| 90 | else throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| 91 | } |
| 92 | if (encoding.getData().available() > 0) |
| 93 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| 94 | } |
| 95 | |
| 96 | |
| 97 | /** |
| 98 | * Encodes a PAEncTSEnc object. |
| 99 | * @return the byte array of encoded PAEncTSEnc object. |
| 100 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
| 101 | * @exception IOException if an I/O error occurs while reading encoded data. |
| 102 | */ |
| 103 | public byte[] asn1Encode() throws Asn1Exception, IOException { |
| 104 | DerOutputStream bytes = new DerOutputStream(); |
| 105 | DerOutputStream temp = new DerOutputStream(); |
| 106 | bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), pATimeStamp.asn1Encode()); |
| 107 | if (pAUSec != null) { |
| 108 | temp = new DerOutputStream(); |
| 109 | temp.putInteger(BigInteger.valueOf(pAUSec.intValue())); |
| 110 | bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); |
| 111 | } |
| 112 | temp = new DerOutputStream(); |
| 113 | temp.write(DerValue.tag_Sequence, bytes); |
| 114 | return temp.toByteArray(); |
| 115 | } |
| 116 | } |