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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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176
test/jdk/java/net/Socket/ClosedSocketTest.java Normal file
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/*
* Copyright (c) 2024, 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.
*/
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;
import java.net.StandardSocketOptions;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
import static org.junit.jupiter.api.Assertions.assertTrue;
/*
* @test
* @summary verifies that the APIs on java.net.Socket throw expected exceptions
* when invoked on a closed socket
* @run junit ClosedSocketTest
*/
public class ClosedSocketTest {
private static final InetAddress loopback = InetAddress.getLoopbackAddress();
private static final InetSocketAddress loopbackEphemeral = new InetSocketAddress(loopback, 0);
/**
* Verifies that various operations that specify to throw an IOException on a closed socket,
* do indeed throw it.
*/
@Test
public void testIOExceptionThrown() throws Exception {
try (final Socket s = new Socket()) {
// close and then invoke the operation on the socket
s.close();
assertTrue(s.isClosed(), "socket isn't closed");
assertThrows(IOException.class, () -> s.bind(loopbackEphemeral),
"bind() when already closed didn't throw IOException");
// connect() will never get to the stage of attempting
// a connection against this port
final int dummyPort = 12345;
assertThrows(IOException.class,
() -> s.connect(new InetSocketAddress(loopback, dummyPort)),
"connect() when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> s.connect(new InetSocketAddress(loopback, dummyPort), 10),
"connect(SocketAddress, int) when already closed didn't throw IOException");
assertThrows(IOException.class,
() -> s.getOption(StandardSocketOptions.SO_RCVBUF),
"getOption() when already closed didn't throw IOException");
assertThrows(IOException.class,
s::getOutputStream,
"getOutputStream() when already closed didn't throw IOException");
assertThrows(IOException.class,
s::shutdownInput,
"shutdownInput() when already closed didn't throw IOException");
assertThrows(IOException.class,
s::shutdownOutput,
"shutdownOutput() when already closed didn't throw IOException");
}
}
/**
* Verifies that various operations that specify to throw a SocketOperation on a closed socket,
* do indeed throw it.
*/
@Test
public void testSocketExceptionThrown() throws Exception {
try (final Socket s = new Socket()) {
// close and then invoke the operations on the socket
s.close();
assertTrue(s.isClosed(), "socket isn't closed");
assertThrowsExactly(SocketException.class,
s::getKeepAlive,
"getKeepAlive() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getOOBInline,
"getOOBInline() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getReceiveBufferSize,
"getReceiveBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getReuseAddress,
"getReuseAddress() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getSendBufferSize,
"getSendBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getSoLinger,
"getSoLinger() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getSoTimeout,
"getSoTimeout() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getTcpNoDelay,
"getTcpNoDelay() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
s::getTrafficClass,
"getTrafficClass() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setKeepAlive(false),
"setKeepAlive() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setOOBInline(false),
"setOOBInline() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setOption(StandardSocketOptions.SO_RCVBUF, 1024),
"setOption() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setReceiveBufferSize(1024),
"setReceiveBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setReuseAddress(false),
"setReuseAddress() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setSendBufferSize(1024),
"setSendBufferSize() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setSoLinger(false, 0),
"setSoLinger() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setSoTimeout(1000),
"setSoTimeout() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setTcpNoDelay(false),
"setTcpNoDelay() when already closed didn't throw SocketException");
assertThrowsExactly(SocketException.class,
() -> s.setTrafficClass(123),
"setTrafficClass() when already closed didn't throw SocketException");
}
}
/**
* Verifies that various operations that aren't expected to throw an exception on a
* closed socket, complete normally.
*/
@Test
public void testNoExceptionThrown() throws Exception {
try (final Socket s = new Socket()) {
// close and then invoke various operation on the socket and don't expect an exception
s.close();
assertTrue(s.isClosed(), "socket isn't closed");
s.getInetAddress();
s.getLocalAddress();
s.getLocalPort();
s.getLocalSocketAddress();
s.getPort();
s.getRemoteSocketAddress();
s.isBound();
s.isConnected();
s.isInputShutdown();
s.isOutputShutdown();
s.supportedOptions();
}
}
}