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.ntlm;

    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 }