Java example source code file (WhiteSpaceHostTest.java)

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Java - Java tags/keywords

bogus, exception, inetaddress, net, network, string, stringtokenizer, unknownhostexception, util, whitespacehosttest

The WhiteSpaceHostTest.java Java example source code

/*
 * Copyright (c) 2000, 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.
 */

/*
 * @test
 * @bug 4361604
 * @summary InetAddress.getByName on Solaris returns 0.0.0.0 for
 *          hostname that start with white space.
 */
import java.net.*;
import java.util.StringTokenizer;

public class WhiteSpaceHostTest {

    public static void main(String args[]) throws Exception {
        String hosts = "        localhost;localhost; localhost;localhost1; localhost1; bogus.mil;\u0010localhost";

        StringTokenizer tokenizer = new StringTokenizer(hosts, ";");
        while (tokenizer.hasMoreTokens()) {
            String hostname = tokenizer.nextToken();
            InetAddress ia;
            try {
                ia = InetAddress.getByName(hostname);
            } catch (UnknownHostException e) {
                continue;
            }
            if (ia.isAnyLocalAddress()) {
                throw new Exception("Bogus hostname lookup returned any local address");
            }
        }
    }
}