| /* |
| * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Lookup/reverse lookup class for regression test 4773521 |
| * @test |
| * @bug 4773521 |
| * @summary Test that reverse lookups of IPv4 addresses work when IPv6 |
| * is enabled |
| * @library /test/lib |
| * @build jdk.test.lib.Utils |
| * jdk.test.lib.Asserts |
| * jdk.test.lib.JDKToolFinder |
| * jdk.test.lib.JDKToolLauncher |
| * jdk.test.lib.Platform |
| * jdk.test.lib.process.* |
| * Lookup |
| * @run main Lookup root |
| * |
| */ |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.List; |
| |
| import jdk.test.lib.JDKToolFinder; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class Lookup { |
| private static final String HOST = "icann.org"; |
| private static final String SKIP = "SKIP"; |
| private static final String CLASS_PATH = System.getProperty( |
| "test.class.path"); |
| |
| public static void main(String args[]) throws IOException { |
| String addr = null; |
| String ipv4Name = null; |
| if (args.length == 0) { |
| // First check that host resolves to IPv4 address |
| try { |
| InetAddress ia = InetAddress.getByName(HOST); |
| addr = ia.getHostAddress(); |
| } catch (UnknownHostException e) { |
| System.out.print(SKIP); |
| return; |
| } |
| } else { |
| String tmp = lookupWithIPv4Prefer(); |
| System.out.println("IPv4 lookup results: [" + tmp + "]"); |
| if (SKIP.equals(tmp)) { |
| System.out.println(HOST + " can't be resolved - test skipped."); |
| return; |
| } |
| |
| String[] strs = tmp.split(":"); |
| addr = strs[0]; |
| ipv4Name = strs[1]; |
| } |
| |
| // reverse lookup |
| InetAddress ia = InetAddress.getByName(addr); |
| String name = ia.getHostName(); |
| if (args.length == 0) { |
| System.out.print(addr + ":" + name); |
| return; |
| } else { |
| System.out.println("(default) " + addr + "--> " + name); |
| if (!ipv4Name.equals(name)) { |
| throw new RuntimeException("Mismatch between default" |
| + " and java.net.preferIPv4Stack=true results"); |
| } |
| } |
| } |
| |
| static String lookupWithIPv4Prefer() throws IOException { |
| String java = JDKToolFinder.getTestJDKTool("java"); |
| String testClz = Lookup.class.getName(); |
| List<String> cmd = List.of(java, "-Djava.net.preferIPv4Stack=true", |
| "-cp", CLASS_PATH, testClz); |
| System.out.println("Executing: " + cmd); |
| return new OutputAnalyzer(new ProcessBuilder(cmd).start()).getOutput(); |
| } |
| } |
| |