2
|
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.krb5.EncryptedData;
|
|
34 |
import sun.security.krb5.Asn1Exception;
|
|
35 |
import sun.security.krb5.RealmException;
|
|
36 |
import sun.security.util.*;
|
|
37 |
import java.util.Vector;
|
|
38 |
import java.io.IOException;
|
|
39 |
import java.math.BigInteger;
|
|
40 |
|
|
41 |
/**
|
|
42 |
* Implements the ASN.1 Authenticator type.
|
|
43 |
*
|
|
44 |
* <xmp>
|
|
45 |
* KRB-CRED ::= [APPLICATION 22] SEQUENCE {
|
|
46 |
* pvno [0] INTEGER (5),
|
|
47 |
* msg-type [1] INTEGER (22),
|
|
48 |
* tickets [2] SEQUENCE OF Ticket,
|
|
49 |
* enc-part [3] EncryptedData -- EncKrbCredPart
|
|
50 |
* }
|
|
51 |
* </xmp>
|
|
52 |
*
|
|
53 |
* <p>
|
|
54 |
* This definition reflects the Network Working Group RFC 4120
|
|
55 |
* specification available at
|
|
56 |
* <a href="http://www.ietf.org/rfc/rfc4120.txt">
|
|
57 |
* http://www.ietf.org/rfc/rfc4120.txt</a>.
|
|
58 |
*/
|
|
59 |
|
|
60 |
public class KRBCred {
|
|
61 |
public Ticket[] tickets = null;
|
|
62 |
public EncryptedData encPart;
|
|
63 |
|
|
64 |
private int pvno;
|
|
65 |
private int msgType;
|
|
66 |
|
|
67 |
public KRBCred(Ticket[] new_tickets, EncryptedData new_encPart) throws IOException {
|
|
68 |
pvno = Krb5.PVNO;
|
|
69 |
msgType = Krb5.KRB_CRED;
|
|
70 |
if (new_tickets != null) {
|
|
71 |
tickets = new Ticket[new_tickets.length];
|
|
72 |
for (int i = 0; i < new_tickets.length; i++) {
|
|
73 |
if (new_tickets[i] == null) {
|
|
74 |
throw new IOException("Cannot create a KRBCred");
|
|
75 |
} else {
|
|
76 |
tickets[i] = (Ticket)new_tickets[i].clone();
|
|
77 |
}
|
|
78 |
}
|
|
79 |
}
|
|
80 |
encPart = new_encPart;
|
|
81 |
}
|
|
82 |
|
|
83 |
public KRBCred(byte[] data) throws Asn1Exception,
|
|
84 |
RealmException, KrbApErrException, IOException {
|
|
85 |
init(new DerValue(data));
|
|
86 |
}
|
|
87 |
|
|
88 |
public KRBCred(DerValue encoding) throws Asn1Exception,
|
|
89 |
RealmException, KrbApErrException, IOException {
|
|
90 |
init(encoding);
|
|
91 |
}
|
|
92 |
|
|
93 |
/**
|
|
94 |
* Initializes an KRBCred object.
|
|
95 |
* @param encoding a single DER-encoded value.
|
|
96 |
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
|
|
97 |
* @exception IOException if an I/O error occurs while reading encoded data.
|
|
98 |
* @exception KrbApErrException if the value read from the DER-encoded data
|
|
99 |
* stream does not match the pre-defined value.
|
|
100 |
* @exception RealmException if an error occurs while parsing a Realm object.
|
|
101 |
*/
|
|
102 |
private void init(DerValue encoding) throws Asn1Exception,
|
|
103 |
RealmException, KrbApErrException, IOException {
|
|
104 |
if (((encoding.getTag() & (byte)0x1F) != (byte)0x16)
|
|
105 |
|| (encoding.isApplication() != true)
|
|
106 |
|| (encoding.isConstructed() != true))
|
|
107 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
108 |
DerValue der, subDer;
|
|
109 |
der = encoding.getData().getDerValue();
|
|
110 |
if (der.getTag() != DerValue.tag_Sequence)
|
|
111 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
112 |
subDer = der.getData().getDerValue();
|
|
113 |
if ((subDer.getTag() & 0x1F) == 0x00) {
|
|
114 |
pvno = subDer.getData().getBigInteger().intValue();
|
|
115 |
if (pvno != Krb5.PVNO) {
|
|
116 |
throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);
|
|
117 |
}
|
|
118 |
}
|
|
119 |
else
|
|
120 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
121 |
subDer = der.getData().getDerValue();
|
|
122 |
if ((subDer.getTag() & 0x1F) == 0x01) {
|
|
123 |
msgType = subDer.getData().getBigInteger().intValue();
|
|
124 |
if (msgType != Krb5.KRB_CRED)
|
|
125 |
throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE);
|
|
126 |
}
|
|
127 |
else
|
|
128 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
129 |
subDer = der.getData().getDerValue();
|
|
130 |
if ((subDer.getTag() & 0x1F) == 0x02) {
|
|
131 |
DerValue subsubDer = subDer.getData().getDerValue();
|
|
132 |
if (subsubDer.getTag() != DerValue.tag_SequenceOf) {
|
|
133 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
134 |
}
|
|
135 |
Vector<Ticket> v = new Vector<Ticket> ();
|
|
136 |
while (subsubDer.getData().available() > 0) {
|
|
137 |
v.addElement(new Ticket(subsubDer.getData().getDerValue()));
|
|
138 |
}
|
|
139 |
if (v.size() > 0) {
|
|
140 |
tickets = new Ticket[v.size()];
|
|
141 |
v.copyInto(tickets);
|
|
142 |
}
|
|
143 |
}
|
|
144 |
else
|
|
145 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
146 |
encPart = EncryptedData.parse(der.getData(), (byte)0x03, false);
|
|
147 |
|
|
148 |
if (der.getData().available() > 0)
|
|
149 |
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
|
|
150 |
}
|
|
151 |
|
|
152 |
|
|
153 |
/**
|
|
154 |
* Encodes an KRBCred object.
|
|
155 |
* @return the data of encoded EncAPRepPart object.
|
|
156 |
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
|
|
157 |
* @exception IOException if an I/O error occurs while reading encoded data.
|
|
158 |
*/
|
|
159 |
public byte[] asn1Encode() throws Asn1Exception, IOException {
|
|
160 |
DerOutputStream temp, bytes, out;
|
|
161 |
temp = new DerOutputStream();
|
|
162 |
temp.putInteger(BigInteger.valueOf(pvno));
|
|
163 |
out = new DerOutputStream();
|
|
164 |
out.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp);
|
|
165 |
temp = new DerOutputStream();
|
|
166 |
temp.putInteger(BigInteger.valueOf(msgType));
|
|
167 |
out.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp);
|
|
168 |
temp = new DerOutputStream();
|
|
169 |
for (int i = 0; i < tickets.length; i++) {
|
|
170 |
temp.write(tickets[i].asn1Encode());
|
|
171 |
}
|
|
172 |
bytes = new DerOutputStream();
|
|
173 |
bytes.write(DerValue.tag_SequenceOf, temp);
|
|
174 |
out.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), bytes);
|
|
175 |
out.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), encPart.asn1Encode());
|
|
176 |
bytes = new DerOutputStream();
|
|
177 |
bytes.write(DerValue.tag_Sequence, out);
|
|
178 |
out = new DerOutputStream();
|
|
179 |
out.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x16), bytes);
|
|
180 |
return out.toByteArray();
|
|
181 |
}
|
|
182 |
|
|
183 |
}
|