1 /*
   2  * Copyright (c) 2006, 2011, 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 6442088
  26  * @summary Change default DNS caching behavior for code not running under
  27  *          security manager.
  28  * @modules java.base/sun.net.spi.nameservice
  29  * @compile -XDignore.symbol.file=true SimpleNameService.java
  30  *                                     SimpleNameServiceDescriptor.java
  31  * @run main/othervm/timeout=200 -Dsun.net.inetaddr.ttl=20 -Dsun.net.spi.nameservice.provider.1=simple,sun DefaultCaching
  32  */
  33 import java.net.InetAddress;
  34 import java.net.UnknownHostException;
  35 import java.security.Security;
  36 
  37 public class DefaultCaching {
  38 
  39     public static void main(String args[]) throws Exception {
  40 
  41         // name service needs to resolve this.
  42         SimpleNameService.put("theclub", "129.156.220.219");
  43 
  44         test ("theclub", "129.156.220.219", true);      // lk: 1
  45         test ("luster", "1.16.20.2", false);            // lk: 2
  46 
  47         // name service now needs to know about luster
  48         SimpleNameService.put("luster", "10.5.18.21");
  49 
  50         test ("luster", "1.16.20.2", false);            // lk: 2
  51         sleep (10+1);
  52         test("luster", "10.5.18.21", true, 3);          // lk: 3
  53         sleep (5);
  54 
  55         SimpleNameService.put("foo", "10.5.18.22");
  56         SimpleNameService.put("theclub", "129.156.220.1");
  57 
  58         test ("theclub", "129.156.220.219", true, 3);
  59         test ("luster", "10.5.18.21", true, 3);
  60         test ("bar", "10.5.18.22", false, 4);
  61         test ("foo", "10.5.18.22", true, 5);
  62 
  63         // now delay to see if theclub has expired
  64         sleep (5);
  65 
  66         test ("foo", "10.5.18.22", true, 5);
  67         test ("theclub", "129.156.220.1", true, 6);
  68 
  69         sleep (11);
  70         // now see if luster has expired
  71         test ("luster", "10.5.18.21", true, 7);
  72         test ("theclub", "129.156.220.1", true, 7);
  73 
  74         // now delay to see if 3rd has expired
  75         sleep (10+6);
  76 
  77         test ("theclub", "129.156.220.1", true, 8);
  78         test ("luster", "10.5.18.21", true, 8);
  79         test ("foo", "10.5.18.22", true, 9);
  80     }
  81 
  82     /* throws RuntimeException if it fails */
  83 
  84     static void test (String host, String address,
  85                         boolean shouldSucceed, int count) {
  86         test (host, address, shouldSucceed);
  87         int got = SimpleNameService.lookupCalls();
  88         if (got != count) {
  89             throw new RuntimeException ("lookups exp/got: " + count+"/"+got);
  90         }
  91     }
  92 
  93     static void sleep (int seconds) {
  94         try {
  95             Thread.sleep (seconds * 1000);
  96         } catch (InterruptedException e) {}
  97     }
  98 
  99     static void test (String host, String address, boolean shouldSucceed) {
 100         InetAddress addr = null;
 101         try {
 102             addr = InetAddress.getByName (host);
 103             if (!shouldSucceed) {
 104                 throw new RuntimeException (host+":"+address+": should fail");
 105 
 106             }
 107             if (!address.equals(addr.getHostAddress())) {
 108                 throw new RuntimeException(host+":"+address+": compare failed");
 109             }
 110         } catch (UnknownHostException e) {
 111             if (shouldSucceed) {
 112                 throw new RuntimeException(host+":"+address+": should succeed");
 113             }
 114         }
 115     }
 116 
 117 }