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/*
* Copyright (c) 2015, 2021, 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 8160286 8243666 8217527
* @summary Test the recording and checking of module hashes
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.base/jdk.internal.module
* jdk.compiler
* jdk.jartool
* jdk.jlink
* @build jdk.test.lib.compiler.ModuleInfoMaker
* jdk.test.lib.compiler.CompilerUtils
* @run testng HashesTest
*/
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.lang.module.ModuleDescriptor;
import java.lang.module.ModuleFinder;
import java.lang.module.ModuleReader;
import java.lang.module.ModuleReference;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.spi.ToolProvider;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import jdk.internal.module.ModuleInfo;
import jdk.internal.module.ModuleHashes;
import jdk.internal.module.ModulePath;
import jdk.test.lib.compiler.ModuleInfoMaker;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import static org.testng.Assert.*;
import static java.lang.module.ModuleDescriptor.Requires.Modifier.*;
public class HashesTest {
static final ToolProvider JMOD_TOOL = ToolProvider.findFirst("jmod")
.orElseThrow(() ->
new RuntimeException("jmod tool not found")
);
static final ToolProvider JAR_TOOL = ToolProvider.findFirst("jar")
.orElseThrow(() ->
new RuntimeException("jar tool not found")
);
static final AtomicInteger counter = new AtomicInteger(0);
private Path mods;
private Path lib;
private ModuleInfoMaker builder;
@BeforeMethod
public void setTestPath() throws IOException {
Path dest = Path.of("test" + counter.addAndGet(1));
if (Files.exists(dest)) {
deleteDirectory(dest);
}
this.mods = dest.resolve("mods");
this.lib = dest.resolve("lib");
this.builder = new ModuleInfoMaker(dest.resolve("src"));
Files.createDirectories(lib);
Files.createDirectories(mods);
}
@Test
public void test() throws IOException {
// create modules for test cases
makeModule("m2");
makeModule("m3");
makeModule("m1", "m2", "m3");
makeModule("org.bar", TRANSITIVE, "m1");
makeModule("org.foo", TRANSITIVE, "org.bar");
// create JMOD for m1, m2, m3
makeJmod("m2");
makeJmod("m3");
// no hash is recorded since m1 has outgoing edges
jmodHashModules("m1", ".*");
// no hash is recorded in m1, m2, m3
assertNull(hashes("m1"));
assertNull(hashes("m2"));
assertNull(hashes("m3"));
// hash m1 in m2
jmodHashModules("m2", "m1");
checkHashes("m2", Set.of("m1"));
// hash m1 in m2
jmodHashModules("m2", ".*");
checkHashes("m2", Set.of("m1"));
// create m2.jmod with no hash
makeJmod("m2");
// run jmod hash command to hash m1 in m2 and m3
runJmod(List.of("hash", "--module-path", lib.toString(),
"--hash-modules", ".*"));
checkHashes("m2", Set.of("m1"));
checkHashes("m3", Set.of("m1"));
// check transitive requires
makeJmod("org.bar");
makeJmod("org.foo");
jmodHashModules("org.bar", "org.*");
checkHashes("org.bar", Set.of("org.foo"));
jmodHashModules( "m3", ".*");
checkHashes("m3", Set.of("org.foo", "org.bar", "m1"));
}
@Test
public void multiBaseModules() throws IOException {
/*
* y2 -----------> y1
* |______
* | |
* V V
* z3 -> z2
* | |
* | V
* |---> z1
*/
makeModule("z1");
makeModule("z2", "z1");
makeModule("z3", "z1", "z2");
makeModule("y1");
makeModule("y2", "y1", "z2", "z3");
Set<String> ys = Set.of("y1", "y2");
Set<String> zs = Set.of("z1", "z2", "z3");
// create JMOD files
Stream.concat(ys.stream(), zs.stream()).forEach(this::makeJmod);
// run jmod hash command
runJmod(List.of("hash", "--module-path", lib.toString(),
"--hash-modules", ".*"));
/*
* z1 and y1 are the modules with hashes recorded.
*/
checkHashes("y1", Set.of("y2"));
checkHashes("z1", Set.of("z2", "z3", "y2"));
Stream.concat(ys.stream(), zs.stream())
.filter(mn -> !mn.equals("y1") && !mn.equals("z1"))
.forEach(mn -> assertNull(hashes(mn)));
}
@Test
public void mixJmodAndJarFile() throws IOException {
/*
* j3 -----------> j2
* |______
* | |
* V V
* m3 -> m2
* | |
* | V
* |---> m1 -> j1 -> jdk.jlink
*/
makeModule("j1");
makeModule("j2");
makeModule("m1", "j1");
makeModule("m2", "m1");
makeModule("m3", "m1", "m2");
makeModule("j3", "j2", "m2", "m3");
Set<String> jars = Set.of("j1", "j2", "j3");
Set<String> jmods = Set.of("m1", "m2", "m3");
// create JMOD and JAR files
jars.forEach(this::makeJar);
jmods.forEach(this::makeJmod);
// run jmod hash command
runJmod(List.of("hash", "--module-path", lib.toString(),
"--hash-modules", "^j.*|^m.*"));
/*
* j1 and j2 are the modules with hashes recorded.
*/
checkHashes("j2", Set.of("j3"));
checkHashes("j1", Set.of("m1", "m2", "m3", "j3"));
Stream.concat(jars.stream(), jmods.stream())
.filter(mn -> !mn.equals("j1") && !mn.equals("j2"))
.forEach(mn -> assertNull(hashes(mn)));
}
@Test
public void upgradeableModule() throws IOException {
Path mpath = Paths.get(System.getProperty("java.home"), "jmods");
if (!Files.exists(mpath)) {
return;
}
makeModule("m1");
makeModule("java.compiler", "m1");
makeModule("m2", "java.compiler");
makeJmod("m1");
makeJmod("m2");
makeJmod("java.compiler",
"--module-path",
lib.toString() + File.pathSeparator + mpath,
"--hash-modules", "java\\.(?!se)|^m.*");
checkHashes("java.compiler", Set.of("m2"));
}
@Test
public void testImageJmods() throws IOException {
Path mpath = Paths.get(System.getProperty("java.home"), "jmods");
if (!Files.exists(mpath)) {
return;
}
makeModule("m1", "jdk.compiler", "jdk.attach");
makeModule("m2", "m1");
makeModule("m3", "java.compiler");
makeJmod("m1");
makeJmod("m2");
runJmod(List.of("hash",
"--module-path",
mpath.toString() + File.pathSeparator + lib.toString(),
"--hash-modules", ".*"));
validateImageJmodsTest(mpath);
}
@Test
public void testImageJmods1() throws IOException {
Path mpath = Paths.get(System.getProperty("java.home"), "jmods");
if (!Files.exists(mpath)) {
return;
}
makeModule("m1", "jdk.compiler", "jdk.attach");
makeModule("m2", "m1");
makeModule("m3", "java.compiler");
makeJar("m2");
makeJar("m1",
"--module-path",
mpath.toString() + File.pathSeparator + lib.toString(),
"--hash-modules", ".*");
validateImageJmodsTest(mpath);
}
@Test
public void testReproducibibleHash() throws Exception {
makeModule("m4");
makeModule("m3", "m4");
makeModule("m2");
makeModule("m1", "m2", "m3");
// create JMOD files and run jmod hash
List.of("m1", "m2", "m3", "m4").forEach(this::makeJmod);
Map<String, ModuleHashes> hashes1 = runJmodHash();
// sleep a bit to be confident that the hashes aren't dependent on timestamps
Thread.sleep(2000);
// (re)create JMOD files and run jmod hash
List.of("m1", "m2", "m3", "m4").forEach(this::makeJmod);
Map<String, ModuleHashes> hashes2 = runJmodHash();
// hashes should be equal
assertEquals(hashes1, hashes2);
}
@Test
public void testHashModulesPattern() throws IOException {
// create modules for test cases
makeModule("m1");
makeModule("m2", "m1");
makeModule("m3");
makeModule("m4", "m1", "m3");
List.of("m1", "m2", "m3", "m4").forEach(this::makeJmod);
// compute hash for the target jmod (m1.jmod) with different regex
// 1) --hash-module "m2"
Path jmod = lib.resolve("m1.jmod");
runJmod("hash",
"--module-path", lib.toString(),
"--hash-modules", "m2", jmod.toString());
assertEquals(moduleHashes().keySet(), Set.of("m1"));
checkHashes("m1", Set.of("m2"));
// 2) --hash-module "m2|m4"
runJmod("hash",
"--module-path", lib.toString(),
"--hash-modules", "m2|m4", jmod.toString());
assertEquals(moduleHashes().keySet(), Set.of("m1"));
checkHashes("m1", Set.of("m2", "m4"));
// 3) --hash-module ".*"
runJmod("hash",
"--module-path", lib.toString(),
"--hash-modules", ".*", jmod.toString());
assertEquals(moduleHashes().keySet(), Set.of("m1"));
checkHashes("m1", Set.of("m2", "m4"));
// target jmod is not specified
// compute hash for all modules in the library
runJmod("hash",
"--module-path", lib.toString(),
"--hash-modules", ".*");
assertEquals(moduleHashes().keySet(), Set.of("m1", "m3"));
checkHashes("m1", Set.of("m2", "m4"));
checkHashes("m3", Set.of("m4"));
}
private void validateImageJmodsTest(Path mpath)
throws IOException
{
// hash is recorded in m1 and not any other packaged modules on module path
checkHashes("m1", Set.of("m2"));
assertNull(hashes("m2"));
// should not override any JDK packaged modules
ModuleFinder finder = ModulePath.of(Runtime.version(), true, mpath);
assertNull(hashes(finder, "jdk.compiler"));
assertNull(hashes(finder, "jdk.attach"));
}
private void checkHashes(String mn, Set<String> hashModules) {
ModuleHashes hashes = hashes(mn);
assertEquals(hashModules, hashes.names());
}
private ModuleHashes hashes(String name) {
ModuleFinder finder = ModulePath.of(Runtime.version(), true, lib);
return hashes(finder, name);
}
private ModuleHashes hashes(ModuleFinder finder, String name) {
ModuleReference mref = finder.find(name).orElseThrow(RuntimeException::new);
try {
try (ModuleReader reader = mref.open();
InputStream in = reader.open("module-info.class").get()) {
ModuleHashes hashes = ModuleInfo.read(in, null).recordedHashes();
System.out.format("hashes in module %s %s%n", name,
(hashes != null) ? "present" : "absent");
if (hashes != null) {
hashes.names().stream().sorted().forEach(n ->
System.out.format(" %s %s%n", n, toHex(hashes.hashFor(n)))
);
}
return hashes;
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
private String toHex(byte[] ba) {
StringBuilder sb = new StringBuilder(ba.length);
for (byte b: ba) {
sb.append(String.format("%02x", b & 0xff));
}
return sb.toString();
}
private void deleteDirectory(Path dir) throws IOException {
Files.walkFileTree(dir, new SimpleFileVisitor<>() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
throws IOException
{
Files.delete(file);
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc)
throws IOException
{
Files.delete(dir);
return FileVisitResult.CONTINUE;
}
});
}
private void makeModule(String mn, String... deps) throws IOException {
makeModule(mn, null, deps);
}
private void makeModule(String mn, ModuleDescriptor.Requires.Modifier mod, String... deps)
throws IOException
{
if (mod != null && mod != TRANSITIVE && mod != STATIC) {
throw new IllegalArgumentException(mod.toString());
}
StringBuilder sb = new StringBuilder();
sb.append("module ")
.append(mn)
.append(" {")
.append("\n");
Arrays.stream(deps)
.forEach(req -> {
sb.append(" requires ");
if (mod != null) {
sb.append(mod.toString().toLowerCase())
.append(" ");
}
sb.append(req)
.append(";\n");
});
sb.append("}\n");
builder.writeJavaFiles(mn, sb.toString());
builder.compile(mn, mods);
}
private void jmodHashModules(String moduleName, String hashModulesPattern) {
makeJmod(moduleName, "--module-path", lib.toString(),
"--hash-modules", hashModulesPattern);
}
private void makeJmod(String moduleName, String... options) {
Path mclasses = mods.resolve(moduleName);
Path outfile = lib.resolve(moduleName + ".jmod");
List<String> args = new ArrayList<>();
args.add("create");
Collections.addAll(args, options);
Collections.addAll(args, "--class-path", mclasses.toString(),
outfile.toString());
if (Files.exists(outfile)) {
try {
Files.delete(outfile);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
runJmod(args);
}
/**
* Execute jmod hash on the modules in the lib directory. Returns a map of
* the modules, with the module name as the key, for the modules that have
* a ModuleHashes class file attribute.
*/
private Map<String, ModuleHashes> runJmodHash() {
runJmod("hash",
"--module-path", lib.toString(),
"--hash-modules", ".*");
return moduleHashes();
}
private Map<String, ModuleHashes> moduleHashes() {
return ModulePath.of(Runtime.version(), true, lib)
.findAll()
.stream()
.map(ModuleReference::descriptor)
.map(ModuleDescriptor::name)
.filter(mn -> hashes(mn) != null)
.collect(Collectors.toMap(mn -> mn, this::hashes));
}
private static void runJmod(List<String> args) {
runJmod(args.toArray(new String[args.size()]));
}
private static void runJmod(String... args) {
int rc = JMOD_TOOL.run(System.out, System.out, args);
System.out.println("jmod " + Arrays.stream(args).collect(Collectors.joining(" ")));
if (rc != 0) {
throw new AssertionError("jmod failed: rc = " + rc);
}
}
private void makeJar(String moduleName, String... options) {
Path mclasses = mods.resolve(moduleName);
Path outfile = lib.resolve(moduleName + ".jar");
List<String> args = new ArrayList<>();
Stream.concat(Stream.of("--create",
"--file=" + outfile.toString()),
Arrays.stream(options))
.forEach(args::add);
args.add("-C");
args.add(mclasses.toString());
args.add(".");
if (Files.exists(outfile)) {
try {
Files.delete(outfile);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
int rc = JAR_TOOL.run(System.out, System.out, args.toArray(new String[args.size()]));
System.out.println("jar " + args.stream().collect(Collectors.joining(" ")));
if (rc != 0) {
throw new AssertionError("jar failed: rc = " + rc);
}
}
}
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