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 
handle(Callback[] callbacks)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     }
getHandler()64     private TestCallBackHandler getHandler() {
65 	return new TestCallBackHandler();
66     }
67 
main(String[] args)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 
96