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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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test/jdk/java/net/ipv6tests/TcpTest.java Normal file
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/*
* Copyright (c) 2003, 2025, 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 4868820
* @key intermittent
* @summary IPv6 support for Windows XP and 2003 server. This test requires
* binding to the wildcard address, and as such is susceptible
* of intermittent failures caused by port reuse policy.
* @library /test/lib
* @build jdk.test.lib.NetworkConfiguration
* jdk.test.lib.Platform
* jtreg.SkippedException
* @run main TcpTest -d
*/
import java.net.*;
import java.io.*;
import java.util.concurrent.TimeUnit;
import jtreg.SkippedException;
public class TcpTest extends Tests {
static ServerSocket server, server1, server2;
static Socket c1, c2, c3, s1, s2, s3;
static InetAddress s1peer, s2peer;
static InetAddress ia4any;
static InetAddress ia6any;
static Inet6Address ia6addr;
static Inet4Address ia4addr;
static {
ia6addr = getFirstLocalIPv6Address ();
ia4addr = getFirstLocalIPv4Address ();
try {
ia4any = InetAddress.getByName ("0.0.0.0");
ia6any = InetAddress.getByName ("::0");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main (String[] args) throws Exception {
checkDebug(args);
if (ia4addr == null) {
throw new SkippedException("No IPV4 addresses: exiting test");
}
if (ia6addr == null) {
throw new SkippedException("No IPV6 addresses: exiting test");
}
dprintln ("Local Addresses");
dprintln (ia4addr.toString());
dprintln (ia6addr.toString());
test1();
test2();
test3();
test4();
}
/* basic TCP connectivity test using IPv6 only and IPv4/IPv6 together */
static void test1 () throws Exception {
server = new ServerSocket (0);
int port = server.getLocalPort();
// try Ipv6 only
c1 = new Socket ("::1", port);
s1 = server.accept ();
simpleDataExchange (c1, s1);
s1.close ();
c1.close();
// try with both IPv4 and Ipv6
c1 = new Socket ("127.0.0.1", port);
c2 = new Socket ("::1", port);
s1 = server.accept();
s2 = server.accept();
s1peer = s1.getInetAddress();
s2peer = s2.getInetAddress();
if (s1peer instanceof Inet6Address) {
t_assert ((s2peer instanceof Inet4Address));
simpleDataExchange (c2, s1);
simpleDataExchange (c1, s2);
} else {
t_assert ((s2peer instanceof Inet6Address));
simpleDataExchange (c1, s1);
simpleDataExchange (c2, s2);
}
c1.close();
c2.close();
s1.close();
s2.close();
server.close ();
System.out.println ("Test1: OK");
}
/** bind tests:
* 1. bind to specific address IPv4 only (any port)
* 2. bind to specific address IPv6 only (any port)
* 3. bind to any address IPv4 (test collision)
*/
static void test2 () throws Exception {
server = new ServerSocket ();
InetSocketAddress sadr = new InetSocketAddress (ia4addr, 0);
server.bind (sadr);
dprintln ("server bound to " + sadr);
int port = server.getLocalPort();
InetSocketAddress sadr6 = new InetSocketAddress (ia6addr, port);
c1 = new Socket (ia4addr, port);
try {
dprintln ("connecting to " + ia6addr);
c2 = new Socket ();
c2.connect (sadr6, 1000);
dprintln ("Unexpected successful connection: " + c2);
// Connect should fail with timeout exception. However, if something else is
// accepting connections, verify it is not our server.
server.setSoTimeout(500);
// Ok if accept() fails because of timeout
while (true) {
// acceptedSocket could be connected to c1, but not c2
try (Socket acceptedSocket = server.accept()) {
dprintln("accepted socket: " + acceptedSocket);
if (acceptedSocket.getRemoteSocketAddress().equals(c2.getLocalSocketAddress()))
throw new RuntimeException("connect to IPv6 address should be refused");
}
}
} catch (IOException e) { }
server.close ();
c1.close ();
if (c2 != null) {
c2.close();
}
/* now try IPv6 only */
server = new ServerSocket ();
sadr = new InetSocketAddress (ia6addr, 0);
dprintln ("binding to " + sadr);
server.bind (sadr);
port = server.getLocalPort();
c1 = new Socket (ia6addr, port);
try {
dprintln ("connecting to " + ia4addr);
c2 = new Socket (ia4addr, port);
dprintln ("Unexpected successful connection: " + c2);
// Connect should fail with timeout exception. However, if something else is
// accepting connections, verify it is not our server.
server.setSoTimeout(500);
// Ok if accept() fails because of timeout
while (true) {
// acceptedSocket could be connected to c1, but not c2
try (Socket acceptedSocket = server.accept()) {
dprintln("accepted socket: " + acceptedSocket);
if (acceptedSocket.getRemoteSocketAddress().equals(c2.getLocalSocketAddress()))
throw new RuntimeException("connect to IPv4 address should be refused");
}
}
} catch (IOException e) { }
server.close ();
c1.close ();
if (c2 != null) {
c2.close();
}
System.out.println ("Test2: OK");
}
/* Test timeouts on accept(), connect() */
static void test3 () throws Exception {
server = new ServerSocket (0);
server.setSoTimeout (5000);
int port = server.getLocalPort();
long t1 = System.nanoTime();
try {
server.accept ();
throw new RuntimeException ("accept should not have returned");
} catch (SocketTimeoutException e) {}
t1 = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - t1);
final long expectedTime = TimeUnit.SECONDS.toMillis(5);
checkIfTimeOut(TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - t1), expectedTime);
c1 = new Socket ();
c1.connect (new InetSocketAddress (ia4addr, port), 1000);
s1 = server.accept ();
simpleDataExchange (c1,s1);
c2 = new Socket ();
c2.connect (new InetSocketAddress (ia6addr, port), 1000);
s2 = server.accept ();
simpleDataExchange (c2,s2);
c3 = new Socket ();
c3.connect (new InetSocketAddress (ia6addr, port), 1000);
s3 = server.accept ();
c2.close (); s2.close();
server.close();
simpleDataExchange (c3,s3);
c1.close (); c2.close();
s1.close (); s2.close();
System.out.println ("Test3: OK");
}
/* Test: connect to IPv4 mapped address */
static void test4 () throws Exception {
server = new ServerSocket (0);
int port = server.getLocalPort();
/* create an IPv4 mapped address corresponding to local host */
byte[] b = {0,0,0,0,0,0,0,0,0,0,(byte)0xff,(byte)0xff,0,0,0,0};
byte[] ia4 = ia4addr.getAddress();
b[12] = ia4[0];
b[13] = ia4[1];
b[14] = ia4[2];
b[15] = ia4[3];
InetAddress dest = InetAddress.getByAddress (b);
c1 = new Socket (dest, port);
s1 = server.accept ();
simpleDataExchange (c1,s1);
c1.close ();
s1.close ();
server.close ();
System.out.println ("Test4: OK");
}
}