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
31package sun.security.krb5.internal.ktab;
32
33import sun.security.krb5.*;
34import sun.security.krb5.internal.*;
35import java.io.UnsupportedEncodingException;
36
37/**
38 * This class represents a Key Table entry. Each entry contains the service principal of
39 * the key, time stamp, key version and secret key itself.
40 *
41 * @author Yanni Zhang
42 */
43public class KeyTabEntry implements KeyTabConstants {
44    PrincipalName service;
45    Realm realm;
46    KerberosTime timestamp;
47    int keyVersion;
48    int keyType;
49    byte[] keyblock = null;
50    boolean DEBUG = Krb5.DEBUG;
51
52    public KeyTabEntry (PrincipalName new_service, Realm new_realm, KerberosTime new_time,
53                        int new_keyVersion, int new_keyType, byte[] new_keyblock) {
54        service = new_service;
55        realm = new_realm;
56        timestamp = new_time;
57        keyVersion = new_keyVersion;
58        keyType = new_keyType;
59        if (new_keyblock != null) {
60            keyblock = new_keyblock.clone();
61        }
62    }
63
64    public PrincipalName getService() {
65        return service;
66    }
67
68    public EncryptionKey getKey() {
69        EncryptionKey key = new EncryptionKey(keyblock,
70                                              keyType,
71                                              keyVersion);
72        return key;
73    }
74
75    public String getKeyString() {
76        StringBuilder sb = new StringBuilder("0x");
77        for (int i = 0; i < keyblock.length; i++) {
78            sb.append(String.format("%02x", keyblock[i]&0xff));
79        }
80        return sb.toString();
81    }
82    public int entryLength() {
83        int totalPrincipalLength = 0;
84        String[] names = service.getNameStrings();
85        for (int i = 0; i < names.length; i++) {
86            try {
87                totalPrincipalLength += principalSize + names[i].getBytes("8859_1").length;
88            } catch (UnsupportedEncodingException exc) {
89            }
90        }
91
92        int realmLen = 0;
93        try {
94            realmLen = realm.toString().getBytes("8859_1").length;
95        } catch (UnsupportedEncodingException exc) {
96        }
97
98        int size = principalComponentSize +  realmSize + realmLen
99            + totalPrincipalLength + principalTypeSize
100            + timestampSize + keyVersionSize
101            + keyTypeSize + keySize + keyblock.length;
102
103        if (DEBUG) {
104            System.out.println(">>> KeyTabEntry: key tab entry size is " + size);
105        }
106        return size;
107    }
108
109    public KerberosTime getTimeStamp() {
110        return timestamp;
111    }
112}
113