1 /*
2  * Copyright (c) 2012, Oracle and/or its affiliates. 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.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @bug 6355584 8044215
27  * @summary Introduce constrained Kerberos delegation
28  * @compile -XDignore.symbol.file S4U2proxy.java
29  * @run main/othervm -Dsun.net.spi.nameservice.provider.1=ns,mock S4U2proxy krb5
30  * @run main/othervm -Dsun.net.spi.nameservice.provider.1=ns,mock S4U2proxy spnego
31  */
32 
33 import java.util.Arrays;
34 import java.util.HashMap;
35 import java.util.List;
36 import java.util.Map;
37 import org.ietf.jgss.Oid;
38 import sun.security.jgss.GSSUtil;
39 
40 public class S4U2proxy {
41 
main(String[] args)42     public static void main(String[] args) throws Exception {
43         Oid mech;
44         if (args[0].equals("spnego")) {
45             mech = GSSUtil.GSS_SPNEGO_MECH_OID;
46         } else if (args[0].contains("krb5")) {
47             mech = GSSUtil.GSS_KRB5_MECH_OID;
48         } else {
49             throw new Exception("Unknown mech");
50         }
51 
52         OneKDC kdc = new OneKDC(null);
53         kdc.writeJAASConf();
54         kdc.setOption(KDC.Option.PREAUTH_REQUIRED, false);
55         Map<String,List<String>> map = new HashMap<>();
56         map.put(OneKDC.SERVER + "@" + OneKDC.REALM, Arrays.asList(
57                 new String[]{OneKDC.BACKEND + "@" + OneKDC.REALM}));
58         kdc.setOption(KDC.Option.ALLOW_S4U2PROXY, map);
59 
60         Context c, s, b;
61         c = Context.fromJAAS("client");
62         s = Context.fromJAAS("server");
63         b = Context.fromJAAS("backend");
64 
65         c.startAsClient(OneKDC.SERVER, mech);
66         s.startAsServer(null, mech, false);
67 
68         Context.handshake(c, s);
69         Context p = s.delegated();
70 
71         p.startAsClient(OneKDC.BACKEND, mech);
72 
73         // 8044215: requestCredDeleg is useless and harmless
74         p.x().requestCredDeleg(true);
75 
76         b.startAsServer(mech);
77         Context.handshake(p, b);
78 
79         p.startAsClient(OneKDC.BACKEND, mech);
80         b.startAsServer(mech);
81         Context.handshake(p, b);
82     }
83 }
84