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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/net/Socket/B6210227.java Normal file
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/*
* Copyright (c) 2012, 2019, 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 6210227
* @library /test/lib
* @summary REGRESSION: Socket.getLocalAddress() returns address of 0.0.0.0 on outbound TCP.
* This test requires binding to the wildcard address.
* @run main B6210227
* @run main/othervm -Djava.net.preferIPv4Stack=true B6210227
* @run main/othervm -Djava.net.preferIPv6Addresses=true B6210227
*/
import java.util.*;
import java.net.*;
import java.util.stream.IntStream;
import java.util.stream.Collectors;
import jdk.test.lib.net.IPSupport;
public class B6210227 {
public static void main(String[] args) throws Exception
{
IPSupport.throwSkippedExceptionIfNonOperational();
ServerSocket ss = new ServerSocket(0);
int port = ss.getLocalPort();
try {
InetSocketAddress isa = new InetSocketAddress(InetAddress.getLocalHost(), port);
Socket s = new Socket();
s.connect( isa, 1000 );
InetAddress iaLocal = s.getLocalAddress(); // if this comes back as 0.0.0.0 this would demonstrate issue
String sLocalHostname = iaLocal.getHostName();
byte[] address = iaLocal.getAddress();
if (isWildcard(address)) {
if (iaLocal instanceof Inet6Address) {
String msg = IntStream.range(0, address.length)
.mapToObj(i -> "0").collect(Collectors.joining(":"));
throw new RuntimeException(msg + " returned");
} else {
throw new RuntimeException ("0.0.0.0 returned");
}
}
System.out.println("local hostname is "+sLocalHostname );
} catch(Exception e) {
System.out.println("Exception happened");
throw e;
} finally {
ss.close();
}
}
private static boolean isWildcard(byte[] bytes) {
for (int i = 0; i < bytes.length ; i++) {
if (bytes[i] != 0) return false;
}
return true;
}
}