1 /*

     2  * Copyright (c) 2002, 2018, 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 8208279

    27  * @summary If DNS name resolution is configured normally for the local

    28  *          machine, construct a context using the configured servers and verify

    29  *          that a PROVIDER_URL property is generated for the context.

    30  *          If DNS is not configured, or if JDK version is earlier than 1.4.1,

    31  *          then this test is a no-op (it passes without doing anything).

    32  * @library ../lib/

    33  * @modules jdk.naming.dns/com.sun.jndi.dns

    34  *          java.base/sun.security.util

    35  * @run main ProviderUrlGen

    36  */

    37 

    38 import javax.naming.Context;

    39 import javax.naming.NamingException;

    40 import javax.naming.directory.InitialDirContext;

    41 import java.lang.reflect.InvocationTargetException;

    42 

    43 public class ProviderUrlGen extends DNSTestBase {

    44 

    45     public ProviderUrlGen() {

    46         setLocalServer(false);

    47     }

    48 

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

    50         if (!isPlatformServersAvailable()) {

    51             DNSTestUtils.debug("DNS not configured. There's nothing to test.");

    52             return;

    53         }

    54 

    55         new ProviderUrlGen().run(args);

    56     }

    57 

    58     @Override public void runTest() throws Exception {

    59         initContext();

    60 

    61         String providerUrl = (String) context().getEnvironment()

    62                 .get(Context.PROVIDER_URL);

    63 

    64         if (providerUrl == null) {

    65             throw new RuntimeException("Failed: PROVIDER_URL not set");

    66         }

    67 

    68         DNSTestUtils.debug("PROVIDER_URL = \"" + providerUrl + "\"");

    69 

    70         // We don't know exactly what providerUrl's value should be.

    71         // Check that it is a space-separated list of one or more URLs

    72         // of the form "dns://xxxxxx".

    73 

    74         String[] urls = providerUrl.split(" ");

    75         if (urls.length < 1) {

    76             throw new RuntimeException("Failed:  PROVIDER_URL is empty");

    77         }

    78 

    79         for (String url : urls) {

    80             DNSTestUtils.debug(url);

    81             if (!checkUrl(url)) {

    82                 throw new RuntimeException(

    83                         "Failed:  Unexpected DNS URL: " + url);

    84             }

    85         }

    86     }

    87 

    88     private void initContext() throws NamingException {

    89         env().remove(Context.PROVIDER_URL);

    90         setContext(new InitialDirContext(env()));

    91     }

    92 

    93     private static boolean checkUrl(String url) {

    94         return url.startsWith("dns://") && url.length() >= 7;

    95     }

    96 

    97     private static boolean isPlatformServersAvailable() {

    98         try {

    99             java.lang.reflect.Method psa = com.sun.jndi.dns.DnsContextFactory.class

   100                     .getMethod("platformServersAvailable", null);

   101             return (Boolean) psa.invoke(null, null);

   102         } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {

   103             e.printStackTrace();

   104             return false;

   105         }

   106     }

   107 }