1 /*
2 * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package sun.net.www.protocol.http;
27
28 import java.io.IOException;
29 import sun.misc.BASE64Encoder;
30 import sun.misc.BASE64Decoder;
31
32 /*
33 * Hooks into Windows implementation of NTLM.
34 * This class will be replaced if a cross-platform version of NTLM
35 * is implemented in the future.
36 */
37
38 public class NTLMAuthSequence {
39
40 private String username;
41 private String password;
42 private String ntdomain;
43 private int state;
44 private long crdHandle;
45 private long ctxHandle;
46
47 static {
48 initFirst();
49 }
50
51 NTLMAuthSequence (String username, String password, String ntdomain)
52 throws IOException
53 {
54 this.username = username;
55 this.password = password;
56 this.ntdomain = ntdomain;
57 state = 0;
58 crdHandle = getCredentialsHandle (username, ntdomain, password);
59 if (crdHandle == 0) {
60 throw new IOException ("could not get credentials handle");
61 }
62 }
63
64 public String getAuthHeader (String token) throws IOException {
65 byte[] input = null;
66 if (token != null)
67 input = (new BASE64Decoder()).decodeBuffer(token);
68 byte[] b = getNextToken (crdHandle, input);
69 if (b == null)
70 throw new IOException ("Internal authentication error");
71 return (new B64Encoder()).encode (b);
72 }
73
74 private native static void initFirst ();
75
76 private native long getCredentialsHandle (String user, String domain, String password);
77
78 private native byte[] getNextToken (long crdHandle, byte[] lastToken);
79 }
80
81 class B64Encoder extends BASE64Encoder {
82 protected int bytesPerLine () {
83 return 1024;
84 }
85 }
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