92 lines
3.5 KiB
Java
92 lines
3.5 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.reflect.Field;
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import java.util.Hashtable;
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import javax.naming.Context;
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import javax.naming.NamingException;
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import javax.naming.spi.NamingManager;
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import com.sun.jndi.dns.DnsContext;
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/**
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* @bug 6991580
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* @summary IPv6 Nameservers in resolv.conf throws NumberFormatException
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*
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* @author Severin Gehwolf
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*/
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public class IPv6NameserverPlatformParsingTest {
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private static boolean foundIPv6 = false;
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public static void main(String[] args) {
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Hashtable<String, String> env = new Hashtable<>();
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env.put(Context.INITIAL_CONTEXT_FACTORY, com.sun.jndi.dns.DnsContextFactory.class.getName());
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String[] servers;
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try {
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Context ctx = NamingManager.getInitialContext(env);
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if (!com.sun.jndi.dns.DnsContextFactory.platformServersAvailable()) {
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throw new RuntimeException("FAIL: no platform servers available, test does not make sense");
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}
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DnsContext context = (DnsContext)ctx;
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servers = getServersFromContext(context);
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} catch (NamingException e) {
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throw new RuntimeException(e);
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}
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for (String server: servers) {
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System.out.println("DEBUG: 'nameserver = " + server + "'");
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if (server.indexOf(':') >= 0 && server.indexOf('.') < 0) {
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System.out.println("DEBUG: ==> Found IPv6 address in servers list: " + server);
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foundIPv6 = true;
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}
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}
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try {
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new com.sun.jndi.dns.DnsClient(servers, 100, 1);
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} catch (NumberFormatException e) {
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throw new RuntimeException("FAIL: Tried to parse non-[]-encapsulated IPv6 address.", e);
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} catch (Exception e) {
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throw new RuntimeException("ERROR: Something unexpected happened.");
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}
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if (!foundIPv6) {
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// This is a manual test, since it requires changing /etc/resolv.conf on Linux/Unix
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// platforms. See comment as to how to run this test.
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throw new RuntimeException("ERROR: No IPv6 address returned from platform.");
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}
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System.out.println("PASS: Found IPv6 address and DnsClient parsed it correctly.");
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}
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private static String[] getServersFromContext(DnsContext context) {
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try {
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Field serversField = DnsContext.class.getDeclaredField("servers");
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serversField.setAccessible(true);
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return (String[])serversField.get(context);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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}
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