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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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238
test/jdk/com/sun/jdi/ModulesTest.java Normal file
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/*
* Copyright (c) 2016, 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 8049365
* @summary Tests the JDI and JDWP update for modules
*
* @run build TestScaffold VMConnection TargetListener TargetAdapter
* @run compile -g ModulesTest.java
* @run driver ModulesTest
*/
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import java.util.*;
/********** target program **********/
class ModulesTarg {
public static void main(String[] args){
System.out.println("Goodbye from ModulesTarg!");
}
}
/********** test program **********/
public class ModulesTest extends TestScaffold {
static final String FailPrefix = "ModulesTest: failed: ";
private static ModuleReference bootUnnamedModule = null;
private static ModuleReference appUnnamedModule = null;
private static ModuleReference extUnnamedModule = null;
private ReferenceType targetClass;
private List<ModuleReference> modules;
ModulesTest (String args[]) {
super(args);
}
public static void main(String[] args) throws Exception {
new ModulesTest(args).startTests();
}
/********** test core **********/
private boolean reftypeSanityCheck(ModuleReference module, ReferenceType type) {
ModuleReference other = type.module();
if (other == null) {
testFailed = true;
println(FailPrefix + "a ModuleReference should never be null #1");
return false;
}
// Sanity checks: make sure there is no crash or exception
String otherName = other.name();
return true;
}
private void checkLoaderDefinedClasses(ModuleReference module, ClassLoaderReference loader) {
String moduleName = module.name();
List<ReferenceType> definedClasses = loader.definedClasses();
boolean origModuleWasObserved = false;
for (ReferenceType type: definedClasses) {
ClassLoaderReference otherLoader = type.classLoader();
if (!loader.equals(otherLoader)) {
testFailed = true;
println(FailPrefix + "all classes defined by a ClassLoader" +
" should refer to the defining ClassLoader");
return;
}
if (!reftypeSanityCheck(module, type)) {
return;
}
}
}
private void checkLoaderVisibleClasses(ModuleReference module, ClassLoaderReference loader) {
String moduleName = module.name();
List<ReferenceType> visibleClasses = loader.visibleClasses();
for (ReferenceType type: visibleClasses) {
if (!type.isPrepared()) {
continue; // Safety: skip unprepared classes
}
if (!reftypeSanityCheck(module, type)) {
return;
}
}
}
// Check any ClassLoader except the bootsrtap ClassLoader
private void checkClassLoader(ModuleReference module, ClassLoaderReference loader) {
checkLoaderDefinedClasses(module, loader);
checkLoaderVisibleClasses(module, loader);
}
// Sanity checks to make sure there are no crashes or exceptions.
private void checkModule(ModuleReference module, ModuleReference other, int checkIdx) {
if (module == null) {
testFailed = true;
println(FailPrefix + "a ModuleReference should never be null #2");
return;
}
String name = module.name();
println("\n--- Check #" + checkIdx);
println(" module name: " + name);
ClassLoaderReference loader = module.classLoader();
println(" loader: " + loader);
if (loader != null) {
checkClassLoader(module, loader);
String classloaderName = loader.toString();
if (classloaderName.contains("AppClassLoader") && name == null) {
if (appUnnamedModule != null) {
testFailed = true;
println(FailPrefix + "multiple unnamed modules in AppClassLoader");
}
appUnnamedModule = module;
}
if (classloaderName.contains("PlatformClassLoader") && name == null) {
if (extUnnamedModule != null) {
testFailed = true;
println(FailPrefix + "multiple unnamed modules in PlatformClassLoader");
}
extUnnamedModule = module;
}
} else if (name == null) {
if (bootUnnamedModule != null) {
testFailed = true;
println(FailPrefix + "multiple unnamed modules in BootClassLoader");
}
bootUnnamedModule = module;
}
}
// Check that the java.lang.String class was loaded by the java.base module.
private void checkBaseModule() {
List<ReferenceType> clist = vm().classesByName("java.lang.String");
if (clist.size() != 1) {
testFailed = true;
println(FailPrefix + "just one java.lang.String class is expected" +
"but found multiple class instances: " + clist.size());
return;
}
ModuleReference module = clist.get(0).module();
if (module == null) {
testFailed = true;
println(FailPrefix + "a ModuleReference should never be null #3");
}
if (module.name().compareTo("java.base") != 0) {
testFailed = true;
println(FailPrefix + "java.lang.String must belong to java.base module");
}
}
// Check that the unnamed modules of the bootsrtap, application
// and platform class loaders were observed.
private void checkUnnamedModules() {
if (bootUnnamedModule == null) {
testFailed = true;
println(FailPrefix + "unnamed module of BootClassLoader was not observed");
}
if (appUnnamedModule == null) {
testFailed = true;
println(FailPrefix + "unnamed module of AppClassLoader was not observed");
}
if (extUnnamedModule == null) {
testFailed = true;
println(FailPrefix + "unnamed module of PlatformClassLoader was not observed");
}
}
protected void runTests() throws Exception {
/*
* Get to the top of main() to determine targetClass
*/
BreakpointEvent bpe = startToMain("ModulesTarg");
targetClass = bpe.location().declaringType();
if (!vm().canGetModuleInfo()) {
testFailed = true;
println(FailPrefix + "vm().canGetModuleInfo() returned false");
}
ModuleReference other = targetClass.module();
modules = vm().allModules();
int checkIdx = 0;
for (ModuleReference module : modules) {
checkModule(module, other, checkIdx++);
other = module;
}
checkBaseModule();
checkUnnamedModules();
/*
* resume the target until end
*/
listenUntilVMDisconnect();
/*
* deal with results of test
* if anything has called failure("foo") testFailed will be true
*/
if (!testFailed) {
println("ModulesTest: passed");
} else {
throw new Exception("ModulesTest: some checks failed");
}
}
}