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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/rmi/reliability/juicer/AppleUserImpl.java Normal file
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/*
* Copyright (c) 2003, 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.
*/
/* @test
*
* @summary The juicer is the classic RMI stress test. The juicer makes
* a large number of concurrent, long running, remote method invocations
* between many threads which have exported remote objects. These
* threads use remote objects that carry on deep "two party"
* recursion. The juicer relies on Distributed Garbage Collection to
* unexport these remote objects when no more references are held to them.
* The two parties in the recursion are OrangeImpl and
* OrangeEchoImpl. OrangeImpl checks the base case of the recursion
* so that the program will exit.
*
* When the AppleUserImpl.main() method is invoked, the class binds an
* instance of itself in a registry. A second server process,
* an ApplicationServer, is started which looks up the recently
* bound AppleUser object. This server is either started up in
* the same VM or can optionally be started in a separate VM on the
* same host or on a different host. When this test is run on the
* RMI profile, ApplicationServer must be started by AppleUserImpl
* and the complete juicer runs in a single process.
*
* The second server process instructs the AppleUserImpl to "use" some apples.
* AppleUserImpl creates a new thread for each apple. These threads
* initiate the two party recursion.
*
* Each recursive call nests to a depth determined by this
* expression: (2 + Math.abs(random.nextInt() % (maxLevel + 1)),
* where maxLevel is a command line parameter. Thus each recursive
* call nests a random number of levels between 2 and maxLevel.
*
* The test ends when an exception is encountered or the stop time
* has been reached.
*
* @library ../../testlibrary
* @modules java.rmi/sun.rmi.registry
* java.rmi/sun.rmi.server
* java.rmi/sun.rmi.transport
* java.rmi/sun.rmi.transport.tcp
* @build TestLibrary
* Apple AppleEvent AppleImpl
* Orange OrangeEcho OrangeEchoImpl OrangeImpl
* ApplicationServer
*
* @run main/othervm AppleUserImpl -seconds 30
*
* @author Peter Jones, Nigel Daley
*/
import java.rmi.NoSuchObjectException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* The AppleUserImpl class implements the behavior of the remote
* "apple user" objects exported by the server. The application server
* passes each of its remote "apple" objects to an apple user, and an
* AppleUserThread is created for each apple.
*/
public class AppleUserImpl extends UnicastRemoteObject implements AppleUser {
private static int registryPort = -1;
private static final Logger logger =
Logger.getLogger("reliability.appleuser");
private static int threadNum = 0;
private static long testDuration = 0;
private static int maxLevel = 7;
private static Exception status = null;
private static boolean finished = false;
private static boolean startTestNotified = false;
private static final Random random = new Random();
private static final Object lock = new Object();
public AppleUserImpl() throws RemoteException {
}
/**
* Allows the other server process to indicate that it is ready
* to start "juicing".
*/
public synchronized void startTest() throws RemoteException {
startTestNotified = true;
this.notifyAll();
}
/**
* Allows the other server process to report an exception to this
* process and thereby terminate the test.
*/
public void reportException(Exception status) throws RemoteException {
synchronized (lock) {
this.status = status;
lock.notifyAll();
}
}
/**
* "Use" supplied apple object. Create an AppleUserThread to
* stress it out.
*/
public synchronized void useApple(Apple apple) throws RemoteException {
String threadName = Thread.currentThread().getName();
logger.log(Level.FINEST,
threadName + ": AppleUserImpl.useApple(): BEGIN");
AppleUserThread t =
new AppleUserThread("AppleUserThread-" + (++threadNum), apple);
t.start();
logger.log(Level.FINEST,
threadName + ": AppleUserImpl.useApple(): END");
}
/**
* The AppleUserThread class repeatedly invokes calls on its associated
* Apple object to stress the RMI system.
*/
class AppleUserThread extends Thread {
final Apple apple;
public AppleUserThread(String name, Apple apple) {
super(name);
this.apple = apple;
}
public void run() {
int orangeNum = 0;
long stopTime = System.currentTimeMillis() + testDuration;
Logger logger = Logger.getLogger("reliability.appleuserthread");
try {
do { // loop until stopTime is reached
/*
* Notify apple with some apple events. This tests
* serialization of arrays.
*/
int numEvents = Math.abs(random.nextInt() % 5);
AppleEvent[] events = new AppleEvent[numEvents];
for (int i = 0; i < events.length; i++) {
events[i] = new AppleEvent(orangeNum % 3);
}
apple.notify(events);
/*
* Request a new orange object be created in
* the application server.
*/
Orange orange = apple.newOrange(
"Orange(" + getName() + ")-" + (++orangeNum));
/*
* Create a large message of random ints to pass to orange.
*/
int msgLength = 1000 + Math.abs(random.nextInt() % 3000);
int[] message = new int[msgLength];
for (int i = 0; i < message.length; i++) {
message[i] = random.nextInt();
}
/*
* Invoke recursive call on the orange. Base case
* of recursion inverts messgage.
*/
OrangeEchoImpl echo = new OrangeEchoImpl(
"OrangeEcho(" + getName() + ")-" + orangeNum);
int[] response = orange.recurse(echo, message,
2 + Math.abs(random.nextInt() % (maxLevel + 1)));
/*
* Verify message was properly inverted and not corrupted
* through all the recursive method invocations.
*/
if (response.length != message.length) {
throw new RuntimeException(
"ERROR: CORRUPTED RESPONSE: " +
"wrong length of returned array " + "(should be " +
message.length + ", is " + response.length + ")");
}
for (int i = 0; i < message.length; i++) {
if (~message[i] != response[i]) {
throw new RuntimeException(
"ERROR: CORRUPTED RESPONSE: " +
"at element " + i + "/" + message.length +
" of returned array (should be " +
Integer.toHexString(~message[i]) + ", is " +
Integer.toHexString(response[i]) + ")");
}
}
try {
Thread.sleep(Math.abs(random.nextInt() % 10) * 1000);
} catch (InterruptedException e) {
}
} while (System.currentTimeMillis() < stopTime);
} catch (Exception e) {
status = e;
}
finished = true;
synchronized (lock) {
lock.notifyAll();
}
}
}
private static void usage() {
System.err.println("Usage: AppleUserImpl [-hours <hours> | " +
"-seconds <seconds>]");
System.err.println(" [-maxLevel <maxLevel>]");
System.err.println(" [-othervm]");
System.err.println(" [-exit]");
System.err.println(" hours The number of hours to run the juicer.");
System.err.println(" The default is 0 hours.");
System.err.println(" seconds The number of seconds to run the juicer.");
System.err.println(" The default is 0 seconds.");
System.err.println(" maxLevel The maximum number of levels to ");
System.err.println(" recurse on each call.");
System.err.println(" The default is 7 levels.");
System.err.println(" othervm If present, the VM will wait for the");
System.err.println(" ApplicationServer to start in");
System.err.println(" another process.");
System.err.println(" The default is to run everything in");
System.err.println(" a single VM.");
System.err.println(" exit If present, the VM will call");
System.err.println(" System.exit() when main() finishes.");
System.err.println(" The default is to not call");
System.err.println(" System.exit().");
System.err.println();
}
/**
* Entry point for the "juicer" server process. Create and export
* an apple user implementation in an rmiregistry running on localhost.
*/
public static void main(String[] args) {
String durationString = null;
boolean othervm = false;
boolean exit = false;
try {
// parse command line args
for (int i = 0; i < args.length ; i++ ) {
String arg = args[i];
if (arg.equals("-hours")) {
if (durationString != null) {
usage();
}
i++;
int hours = Integer.parseInt(args[i]);
durationString = hours + " hours";
testDuration = hours * 60 * 60 * 1000;
} else if (arg.equals("-seconds")) {
if (durationString != null) {
usage();
}
i++;
long seconds = Long.parseLong(args[i]);
durationString = seconds + " seconds";
testDuration = seconds * 1000;
} else if (arg.equals("-maxLevel")) {
i++;
maxLevel = Integer.parseInt(args[i]);
} else if (arg.equals("-othervm")) {
othervm = true;
} else if (arg.equals("-exit")) {
exit = true;
} else {
usage();
}
}
if (durationString == null) {
durationString = testDuration + " milliseconds";
}
} catch (Throwable t) {
usage();
throw new RuntimeException("TEST FAILED: Bad argument");
}
AppleUserImpl user = null;
long startTime = 0;
Thread server = null;
int exitValue = 0;
try {
user = new AppleUserImpl();
synchronized (user) {
// create new registry and bind new AppleUserImpl in registry
Registry registry = TestLibrary.createRegistryOnEphemeralPort();
registryPort = TestLibrary.getRegistryPort(registry);
LocateRegistry.getRegistry(registryPort).rebind("AppleUser",
user);
// start the other server if applicable
if (othervm) {
// the other server must be running in a separate process
logger.log(Level.INFO, "Application server must be " +
"started in separate process");
} else {
Class app = Class.forName("ApplicationServer");
java.lang.reflect.Constructor appConstructor =
app.getDeclaredConstructor(new Class[] {Integer.TYPE});
server = new Thread((Runnable) appConstructor.newInstance(registryPort));
logger.log(Level.INFO, "Starting application server " +
"in same process");
server.start();
}
// wait for other server to call startTest method
logger.log(Level.INFO, "Waiting for application server " +
"process to start");
while (!startTestNotified) {
user.wait();
}
}
startTime = System.currentTimeMillis();
logger.log(Level.INFO, "Test starting");
// wait for exception to be reported or first thread to complete
logger.log(Level.INFO, "Waiting " + durationString + " for " +
"test to complete or exception to be thrown");
synchronized (lock) {
while (status == null && !finished) {
lock.wait();
}
}
if (status != null) {
throw new RuntimeException("TEST FAILED: "
+ "juicer server reported an exception", status);
} else {
logger.log(Level.INFO, "TEST PASSED");
}
} catch (Exception e) {
logger.log(Level.INFO, "TEST FAILED");
exitValue = 1;
if (exit) {
e.printStackTrace();
}
throw new RuntimeException("TEST FAILED: "
+ "unexpected exception", e);
} finally {
long actualDuration = System.currentTimeMillis() - startTime;
logger.log(Level.INFO, "Test finished");
try {
UnicastRemoteObject.unexportObject(user, true);
} catch (NoSuchObjectException ignore) {
}
logger.log(Level.INFO, "Test duration was " +
(actualDuration/1000) + " seconds " +
"(" + (actualDuration/3600000) + " hours)");
System.gc(); System.gc();
if (exit) {
System.exit(exitValue);
}
}
}
}