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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/nio/channels/SocketChannel/VectorIO.java Normal file
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/*
* Copyright (c) 2000, 2017, 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 8191025
* @summary Test socketchannel vector IO (use -Dseed=X to set PRNG seed)
* @library .. /test/lib
* @build jdk.test.lib.RandomFactory
* @run main VectorIO
* @key randomness
*/
import java.io.*;
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.*;
import jdk.test.lib.RandomFactory;
public class VectorIO {
private static Random generator = RandomFactory.getRandom();
static int testSize;
// whether to use the write/read variant with a length parameter
static boolean setLength;
public static void main(String[] args) throws Exception {
testSize = 1;
setLength = false;
runTest();
for(int i=15; i<18; i++) {
testSize = i;
setLength = !setLength;
runTest();
}
}
static void runTest() throws Exception {
System.err.println("Length " + testSize);
Server sv = new Server(testSize);
sv.start();
bufferTest(sv.port());
if (sv.finish(8000) == 0)
throw new Exception("Failed: Length = " + testSize);
}
static void bufferTest(int port) throws Exception {
ByteBuffer[] bufs = new ByteBuffer[testSize];
long total = 0L;
for(int i=0; i<testSize; i++) {
String source = "buffer" + i;
if (generator.nextBoolean())
bufs[i] = ByteBuffer.allocateDirect(source.length());
else
bufs[i] = ByteBuffer.allocate(source.length());
bufs[i].put(source.getBytes("8859_1"));
bufs[i].flip();
total += bufs[i].remaining();
}
ByteBuffer[] bufsPlus1 = new ByteBuffer[bufs.length + 1];
System.arraycopy(bufs, 0, bufsPlus1, 0, bufs.length);
// Get a connection to the server
InetAddress lh = InetAddress.getLocalHost();
InetSocketAddress isa = new InetSocketAddress(lh, port);
SocketChannel sc = SocketChannel.open();
sc.connect(isa);
sc.configureBlocking(generator.nextBoolean());
// Write the data out
long rem = total;
while (rem > 0L) {
long bytesWritten;
if (setLength) {
bytesWritten = sc.write(bufsPlus1, 0, bufs.length);
} else {
bytesWritten = sc.write(bufs);
}
if (bytesWritten == 0) {
if (sc.isBlocking()) {
throw new RuntimeException("write did not block");
} else {
System.err.println("Non-blocking write() wrote zero bytes");
}
Thread.sleep(50);
} else {
rem -= bytesWritten;
}
}
// Clean up
sc.close();
}
static class Server
extends TestThread
{
final int testSize;
final ServerSocketChannel ssc;
Server(int testSize) throws IOException {
super("Server " + testSize);
this.testSize = testSize;
this.ssc = ServerSocketChannel.open().bind(new InetSocketAddress(0));
}
int port() {
return ssc.socket().getLocalPort();
}
void go() throws Exception {
bufferTest();
}
void bufferTest() throws Exception {
long total = 0L;
ByteBuffer[] bufs = new ByteBuffer[testSize];
for(int i=0; i<testSize; i++) {
String source = "buffer" + i;
if (generator.nextBoolean())
bufs[i] = ByteBuffer.allocateDirect(source.length());
else
bufs[i] = ByteBuffer.allocate(source.length());
total += bufs[i].capacity();
}
ByteBuffer[] bufsPlus1 = new ByteBuffer[bufs.length + 1];
System.arraycopy(bufs, 0, bufsPlus1, 0, bufs.length);
// Get a connection from client
SocketChannel sc = null;
try {
ssc.configureBlocking(false);
for (;;) {
sc = ssc.accept();
if (sc != null) {
System.err.println("accept() succeeded");
break;
}
Thread.sleep(50);
}
sc.configureBlocking(generator.nextBoolean());
// Read data into multiple buffers
long avail = total;
while (avail > 0) {
long bytesRead;
if (setLength) {
bytesRead = sc.read(bufsPlus1, 0, bufs.length);
} else {
bytesRead = sc.read(bufs);
}
if (bytesRead < 0)
break;
if (bytesRead == 0) {
if (sc.isBlocking()) {
throw new RuntimeException("read did not block");
} else {
System.err.println
("Non-blocking read() read zero bytes");
}
Thread.sleep(50);
}
avail -= bytesRead;
}
// Check results
for(int i=0; i<testSize; i++) {
String expected = "buffer" + i;
bufs[i].flip();
int size = bufs[i].capacity();
byte[] data = new byte[size];
for(int j=0; j<size; j++)
data[j] = bufs[i].get();
String message = new String(data, "8859_1");
if (!message.equals(expected))
throw new Exception("Wrong data: Got "
+ message + ", expected "
+ expected);
}
} finally {
// Clean up
ssc.close();
if (sc != null)
sc.close();
}
}
}
}