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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