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| 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. Oracle designates this | ||
| 7 | * particular file as subject to the "Classpath" exception as provided | ||
| 8 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 21 | * or visit www.oracle.com if you need additional information or have any | ||
| 22 | * 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 EncKrbPrivPart type. | ||
| 40 | * | ||
| 41 | * <xmp> | ||
| 42 | * METHOD-DATA ::= SEQUENCE { | ||
| 43 | * method-type[0] INTEGER, | ||
| 44 | * method-data[1] OCTET STRING OPTIONAL | ||
| 45 | * } | ||
| 46 | * </xmp> | ||
| 47 | */ | ||
| 48 | public class MethodData { | ||
| 49 | private int methodType; | ||
| 50 | private byte[] methodData = null; //optional | ||
| 51 | |||
| 52 | public MethodData(int type, byte[] data) { | ||
| 53 | methodType = type; | ||
| 54 | if (data != null) { | ||
| 55 | methodData = data.clone(); | ||
| 56 | } | ||
| 57 | } | ||
| 58 | |||
| 59 | /** | ||
| 60 | * Constructs a MethodData object. | ||
| 61 | * @param encoding a Der-encoded data. | ||
| 62 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 63 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 64 | */ | ||
| 65 | public MethodData(DerValue encoding) throws Asn1Exception, IOException { | ||
| 66 | DerValue der; | ||
| 67 | if (encoding.getTag() != DerValue.tag_Sequence) { | ||
| 68 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 69 | } | ||
| 70 | der = encoding.getData().getDerValue(); | ||
| 71 | if ((der.getTag() & 0x1F) == 0x00) { | ||
| 72 | BigInteger bint = der.getData().getBigInteger(); | ||
| 73 | methodType = bint.intValue(); | ||
| 74 | } | ||
| 75 | else | ||
| 76 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 77 | if (encoding.getData().available() > 0) { | ||
| 78 | der = encoding.getData().getDerValue(); | ||
| 79 | if ((der.getTag() & 0x1F) == 0x01) { | ||
| 80 | methodData = der.getData().getOctetString(); | ||
| 81 | } | ||
| 82 | else throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 83 | } | ||
| 84 | if (encoding.getData().available() > 0) | ||
| 85 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 86 | } | ||
| 87 | |||
| 88 | /** | ||
| 89 | * Encodes an MethodData object. | ||
| 90 | * @return the byte array of encoded MethodData object. | ||
| 91 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 92 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 93 | */ | ||
| 94 | |||
| 95 | public byte[] asn1Encode() throws Asn1Exception, IOException { | ||
| 96 | DerOutputStream bytes = new DerOutputStream(); | ||
| 97 | DerOutputStream temp = new DerOutputStream(); | ||
| 98 | temp.putInteger(BigInteger.valueOf(methodType)); | ||
| 99 | bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); | ||
| 100 | if (methodData != null) { | ||
| 101 | temp = new DerOutputStream(); | ||
| 102 | temp.putOctetString(methodData); | ||
| 103 | bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); | ||
| 104 | } | ||
| 105 | |||
| 106 | temp = new DerOutputStream(); | ||
| 107 | temp.write(DerValue.tag_Sequence, bytes); | ||
| 108 | return temp.toByteArray(); | ||
| 109 | } | ||
| 110 | |||
| 111 | } | ||