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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.util.Vector; | ||
| 36 | import java.io.IOException; | ||
| 37 | import sun.security.krb5.internal.ccache.CCacheOutputStream; | ||
| 38 | |||
| 39 | /** | ||
| 40 | * In RFC4120, the ASN.1 AuthorizationData is defined as: | ||
| 41 | * | ||
| 42 | * AuthorizationData ::= SEQUENCE OF SEQUENCE { | ||
| 43 | * ad-type [0] Int32, | ||
| 44 | * ad-data [1] OCTET STRING | ||
| 45 | * } | ||
| 46 | * | ||
| 47 | * Here, two classes are used to implement it and they can be represented as follows: | ||
| 48 | * | ||
| 49 | * AuthorizationData ::= SEQUENCE OF AuthorizationDataEntry | ||
| 50 | * AuthorizationDataEntry ::= SEQUENCE { | ||
| 51 | * ad-type[0] Int32, | ||
| 52 | * ad-data[1] OCTET STRING | ||
| 53 | * } | ||
| 54 | */ | ||
| 55 | public class AuthorizationData implements Cloneable { | ||
| 56 | |||
| 57 | private AuthorizationDataEntry[] entry = null; | ||
| 58 | |||
| 59 | private AuthorizationData() { | ||
| 60 | } | ||
| 61 | |||
| 62 | public AuthorizationData(AuthorizationDataEntry[] new_entries) | ||
| 63 | throws IOException { | ||
| 64 | if (new_entries != null) { | ||
| 65 | entry = new AuthorizationDataEntry[new_entries.length]; | ||
| 66 | for (int i = 0; i < new_entries.length; i++) { | ||
| 67 | if (new_entries[i] == null) { | ||
| 68 | throw new IOException("Cannot create an AuthorizationData"); | ||
| 69 | } else { | ||
| 70 | entry[i] = (AuthorizationDataEntry) new_entries[i].clone(); | ||
| 71 | } | ||
| 72 | } | ||
| 73 | } | ||
| 74 | } | ||
| 75 | |||
| 76 | public AuthorizationData(AuthorizationDataEntry new_entry) { | ||
| 77 | entry = new AuthorizationDataEntry[1]; | ||
| 78 | entry[0] = new_entry; | ||
| 79 | } | ||
| 80 | |||
| 81 | public Object clone() { | ||
| 82 | AuthorizationData new_authorizationData = | ||
| 83 | new AuthorizationData(); | ||
| 84 | if (entry != null) { | ||
| 85 | new_authorizationData.entry = | ||
| 86 | new AuthorizationDataEntry[entry.length]; | ||
| 87 | for (int i = 0; i < entry.length; i++) { | ||
| 88 | new_authorizationData.entry[i] = | ||
| 89 | (AuthorizationDataEntry) entry[i].clone(); | ||
| 90 | } | ||
| 91 | } | ||
| 92 | return new_authorizationData; | ||
| 93 | } | ||
| 94 | |||
| 95 | /** | ||
| 96 | * Constructs a new <code>AuthorizationData,</code> instance. | ||
| 97 | * @param der a single DER-encoded value. | ||
| 98 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 99 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 100 | */ | ||
| 101 | public AuthorizationData(DerValue der) throws Asn1Exception, IOException { | ||
| 102 | Vector<AuthorizationDataEntry> v = new Vector<>(); | ||
| 103 | if (der.getTag() != DerValue.tag_Sequence) { | ||
| 104 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 105 | } | ||
| 106 | while (der.getData().available() > 0) { | ||
| 107 | v.addElement(new AuthorizationDataEntry(der.getData().getDerValue())); | ||
| 108 | } | ||
| 109 | if (v.size() > 0) { | ||
| 110 | entry = new AuthorizationDataEntry[v.size()]; | ||
| 111 | v.copyInto(entry); | ||
| 112 | } | ||
| 113 | } | ||
| 114 | |||
| 115 | /** | ||
| 116 | * Encodes an <code>AuthorizationData</code> object. | ||
| 117 | * @return byte array of encoded <code>AuthorizationData</code> object. | ||
| 118 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 119 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 120 | */ | ||
| 121 | public byte[] asn1Encode() throws Asn1Exception, IOException { | ||
| 122 | DerOutputStream bytes = new DerOutputStream(); | ||
| 123 | DerValue der[] = new DerValue[entry.length]; | ||
| 124 | for (int i = 0; i < entry.length; i++) { | ||
| 125 | der[i] = new DerValue(entry[i].asn1Encode()); | ||
| 126 | } | ||
| 127 | bytes.putSequence(der); | ||
| 128 | return bytes.toByteArray(); | ||
| 129 | } | ||
| 130 | |||
| 131 | /** | ||
| 132 | * Parse (unmarshal) an <code>AuthorizationData</code> object from a DER input stream. | ||
| 133 | * This form of parsing might be used when expanding a value which is part of | ||
| 134 | * a constructed sequence and uses explicitly tagged type. | ||
| 135 | * | ||
| 136 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 137 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 138 | * @param data the Der input stream value, which contains one or more marshaled value. | ||
| 139 | * @param explicitTag tag number. | ||
| 140 | * @param optional indicates if this data field is optional | ||
| 141 | * @return an instance of AuthorizationData. | ||
| 142 | * | ||
| 143 | */ | ||
| 144 | public static AuthorizationData parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException { | ||
| 145 | if ((optional) && (((byte) data.peekByte() & (byte) 0x1F) != explicitTag)) { | ||
| 146 | return null; | ||
| 147 | } | ||
| 148 | DerValue der = data.getDerValue(); | ||
| 149 | if (explicitTag != (der.getTag() & (byte) 0x1F)) { | ||
| 150 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 151 | } else { | ||
| 152 | DerValue subDer = der.getData().getDerValue(); | ||
| 153 | return new AuthorizationData(subDer); | ||
| 154 | } | ||
| 155 | } | ||
| 156 | |||
| 157 | /** | ||
| 158 | * Writes <code>AuthorizationData</code> data fields to a output stream. | ||
| 159 | * | ||
| 160 | * @param cos a <code>CCacheOutputStream</code> to be written to. | ||
| 161 | * @exception IOException if an I/O exception occurs. | ||
| 162 | */ | ||
| 163 | public void writeAuth(CCacheOutputStream cos) throws IOException { | ||
| 164 | for (int i = 0; i < entry.length; i++) { | ||
| 165 | entry[i].writeEntry(cos); | ||
| 166 | } | ||
| 167 | } | ||
| 168 | |||
| 169 | public String toString() { | ||
| 170 | String retVal = "AuthorizationData:\n"; | ||
| 171 | for (int i = 0; i < entry.length; i++) { | ||
| 172 | retVal += entry[i].toString(); | ||
| 173 | } | ||
| 174 | return retVal; | ||
| 175 | } | ||
| 176 | |||
| 177 | public int count() { | ||
| 178 | return entry.length; | ||
| 179 | } | ||
| 180 | |||
| 181 | public AuthorizationDataEntry item(int i) { | ||
| 182 | return (AuthorizationDataEntry)entry[i].clone(); | ||
| 183 | } | ||
| 184 | } | ||