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 S4U2proxy krb5
  30  * @run main/othervm 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 
  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 }