1  /*
 2   *
 3   * Copyright (c) 2007 Kungliga Tekniska Högskolan
 4   * (Royal Institute of Technology, Stockholm, Sweden). 
 5   * All rights reserved. 
 6   *
 7   * Redistribution and use in source and binary forms, with or without 
 8   * modification, are permitted provided that the following conditions 
 9   * are met: 
10   *
11   * 1. Redistributions of source code must retain the above copyright 
12   *    notice, this list of conditions and the following disclaimer. 
13   *
14   * 2. Redistributions in binary form must reproduce the above copyright 
15   *    notice, this list of conditions and the following disclaimer in the 
16   *    documentation and/or other materials provided with the distribution. 
17   *
18   * 3. Neither the name of the Institute nor the names of its contributors 
19   *    may be used to endorse or promote products derived from this software 
20   *    without specific prior written permission. 
21   *
22   * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
23   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
24   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
25   * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
26   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
27   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
28   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
29   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
30   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
31   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
32   * SUCH DAMAGE. 
33   *
34   * $Id$
35   */
36  
37  import javax.security.auth.login.*;
38  import javax.security.auth.callback.*;
39  
40  public class KerberosInit {
41  
42      private class TestCallBackHandler implements CallbackHandler {
43  	
44  	public void handle(Callback[] callbacks)
45  	    throws UnsupportedCallbackException {
46  	    for (int i = 0; i < callbacks.length; i++) {
47  		if (callbacks[i] instanceof TextOutputCallback) {
48  		    TextOutputCallback toc = (TextOutputCallback)callbacks[i];
49  		    System.out.println(toc.getMessage());
50  		} else if (callbacks[i] instanceof NameCallback) {
51  		    NameCallback nc = (NameCallback)callbacks[i];
52  		    nc.setName("lha");
53  		} else if (callbacks[i] instanceof PasswordCallback) {
54  		    PasswordCallback pc = (PasswordCallback)callbacks[i];
55  		    pc.setPassword("foo".toCharArray());
56  		} else {
57  		    throw new
58  			UnsupportedCallbackException(callbacks[i],
59  						     "Unrecognized Callback");
60  		}
61  	    }
62  	}
63      }
64      private TestCallBackHandler getHandler() {
65  	return new TestCallBackHandler();
66      }
67  
68      public static void main(String[] args) {
69  
70          LoginContext lc = null;
71          try {
72              lc = new LoginContext("kinit", new KerberosInit().getHandler());
73          } catch (LoginException e) {
74              System.err.println("Cannot create LoginContext. " + e.getMessage());
75  	    e.printStackTrace();
76              System.exit(1);
77          } catch (SecurityException e) {
78              System.err.println("Cannot create LoginContext. " + e.getMessage());
79  	    e.printStackTrace();
80              System.exit(1);
81          } 
82  
83          try {
84              lc.login();
85          } catch (LoginException e) {
86              System.err.println("Authentication failed:" + e.getMessage());
87  	    e.printStackTrace();
88              System.exit(1);
89          }
90  
91  	System.out.println("lc.login ok");
92  	System.exit(0);
93      }
94  }
95