1  /*
  2   * Copyright (c) 2007 Kungliga Tekniska Högskolan
  3   * (Royal Institute of Technology, Stockholm, Sweden). 
  4   * All rights reserved. 
  5   *
  6   * Redistribution and use in source and binary forms, with or without 
  7   * modification, are permitted provided that the following conditions 
  8   * are met: 
  9   *
 10   * 1. Redistributions of source code must retain the above copyright 
 11   *    notice, this list of conditions and the following disclaimer. 
 12   *
 13   * 2. Redistributions in binary form must reproduce the above copyright 
 14   *    notice, this list of conditions and the following disclaimer in the 
 15   *    documentation and/or other materials provided with the distribution. 
 16   *
 17   * 3. Neither the name of the Institute nor the names of its contributors 
 18   *    may be used to endorse or promote products derived from this software 
 19   *    without specific prior written permission. 
 20   *
 21   * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 22   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 23   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 24   * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 25   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 27   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 28   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 29   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 30   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 31   * SUCH DAMAGE. 
 32   */
 33  
 34  import org.ietf.jgss.*;
 35  import java.io.*;
 36  import java.net.Socket;
 37  import java.net.ServerSocket;
 38  
 39  public class jgssapi_server {
 40  
 41      static byte [] getMessage(DataInputStream inStream)
 42  	throws IOException
 43      {
 44  	byte[] token;
 45  	token = new byte[inStream.readInt()];
 46  	inStream.readFully(token);
 47  	return token;
 48      }
 49      
 50      static void putMessage(DataOutputStream outStream, byte [] token)
 51  	throws IOException
 52      {
 53  	outStream.writeInt(token.length);
 54  	outStream.write(token);
 55      }
 56  
 57  
 58      public static void main(String[] args) 
 59  	throws IOException, GSSException {
 60  
 61  	GSSManager manager = GSSManager.getInstance();
 62  
 63  	GSSContext context = manager.createContext((GSSCredential)null);
 64  
 65  	byte[] token = null;
 66  	    
 67  	int port = 4717;
 68  
 69  	System.out.println("listen on port " + port);
 70  
 71  	Socket s = new ServerSocket(port).accept();
 72  
 73  	DataInputStream inStream = new DataInputStream(s.getInputStream());
 74  	DataOutputStream outStream =  new DataOutputStream(s.getOutputStream());
 75  
 76  	System.out.println("negotiate context");
 77  	while (!context.isEstablished()) {
 78  	    token = getMessage(inStream);
 79  
 80  	    token = context.acceptSecContext(token, 0, token.length);
 81  	    if (token != null)
 82  		putMessage(outStream, token);
 83  	}
 84  
 85  	System.out.println("done");
 86  
 87  	/*
 88  	 * mic
 89  	 */
 90  	System.out.println("mic test");
 91  
 92  	System.out.println("  verify mic");
 93  
 94  	byte[] intoken = getMessage(inStream);
 95  	byte[] outtoken = getMessage(inStream);
 96  	byte[] bytes = null;
 97  
 98  	context.verifyMIC(outtoken, 0, outtoken.length, 
 99  			  intoken, 0, intoken.length, new MessageProp(0, false));
100  
101  	System.out.println("  create mic");
102  
103  	bytes = new byte[] { 0x66, 0x6f, 0x6f };
104  
105  	outtoken = context.getMIC(bytes, 0, bytes.length, new MessageProp(0, false));
106  	putMessage(outStream, bytes);
107  	putMessage(outStream, outtoken);
108  
109  	/*
110  	 * wrap int
111  	 */
112  	System.out.println("warp int");
113  
114  	outtoken = getMessage(inStream);
115  	
116  	bytes = context.unwrap(outtoken, 0, outtoken.length, new MessageProp(0, false));
117  
118  	if (bytes == null)
119  	    System.err.println("wrap int failed");
120  
121  	/*
122  	 * wrap conf
123  	 */
124  	System.out.println("warp conf");
125  
126  	outtoken = getMessage(inStream);
127  	
128  	bytes = context.unwrap(outtoken, 0, outtoken.length, new MessageProp(0, true));
129  
130  	if (bytes == null)
131  	    System.err.println("wrap conf failed");
132  
133  
134  	/*
135  	 * wrap conf
136  	 */
137  	System.out.println("warp conf");
138  	intoken = new byte[] { 0x66, 0x6f, 0x6f };
139  	outtoken = context.wrap(intoken, 0, intoken.length, new MessageProp(0, true));
140  	putMessage(outStream, outtoken);
141  	outtoken = getMessage(inStream);
142  
143  	context.dispose();
144  
145  	System.exit(0);
146      }
147  }
148