1 /*

     2  * Copyright (c) 2008, 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  * @test

    25  * @bug 6673164

    26  * @bug 6552334

    27  * @run main/othervm DnsFallback

    28  * @summary fix dns_fallback parse error, and use dns by default

    29  */

    30 

    31 import java.io.*;

    32 import java.lang.reflect.Method;

    33 import sun.security.krb5.Config;

    34 

    35 public class DnsFallback {

    36 

    37     static Method useDNS_Realm;

    38 

    39     public static void main(String[] args) throws Exception {

    40 

    41         useDNS_Realm = Config.class.getDeclaredMethod("useDNS_Realm");

    42         useDNS_Realm.setAccessible(true);

    43 

    44 

    45         // for 6673164

    46         check("true", "true", true);

    47         check("false", "true", false);

    48         check("true", "false", true);

    49         check("false", "false", false);

    50         check("true", null, true);

    51         check("false", null, false);

    52         check(null, "true", true);

    53         check(null, "false", false);

    54 

    55         // for 6552334

    56         check(null, null, true);

    57     }

    58 

    59     static void check(String realm, String fallback, boolean output)

    60             throws Exception {

    61 

    62         try (PrintStream ps =

    63                 new PrintStream(new FileOutputStream("dnsfallback.conf"))) {

    64             ps.println("[libdefaults]\n");

    65             if (realm != null) {

    66                 ps.println("dns_lookup_realm=" + realm);

    67             }

    68             if (fallback != null) {

    69                 ps.println("dns_fallback=" + fallback);

    70             }

    71         }

    72 

    73         System.setProperty("java.security.krb5.conf", "dnsfallback.conf");

    74         Config.refresh();

    75         System.out.println("Testing " + realm + ", " + fallback + ", " + output);

    76 

    77         if (!useDNS_Realm.invoke(Config.getInstance()).equals(output)) {

    78             throw new Exception("Fail");

    79         }

    80     }

    81 }

    82