227 lines
8.5 KiB
Java
227 lines
8.5 KiB
Java
/*
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary class p1.c1 defined in m1x tries to access p2.c2 defined in unnamed module.
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @modules java.base/jdk.internal.module
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* @compile myloaders/MyDiffClassLoader.java
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* @compile p2/c2.java
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* @compile p1/c1.java
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* @compile p1/c1ReadEdgeDiffLoader.java
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* @compile p1/c1Loose.java
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* @run main/othervm -Xbootclasspath/a:. DiffCL_Umod
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*/
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import static jdk.test.lib.Asserts.*;
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import java.lang.module.Configuration;
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleFinder;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import myloaders.MyDiffClassLoader;
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//
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// ClassLoader1 --> defines m1x --> packages p1
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// package p1 in m1x is exported unqualifiedly
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//
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// class p1.c1 defined in m1x tries to access p2.c2 defined in
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// in unnamed module.
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//
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// Three access attempts occur in this test:
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// 1. The first access is not allowed because a strict module
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// cannot read an unnamed module.
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// 2. In this scenario a strict module establishes readability
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// to the particular unnamed module it is trying to access.
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// Access is allowed.
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// 3. Module m1x in the test_looseModuleLayer() method
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// is transitioned to a loose module, access
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// to all unnamed modules is allowed.
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//
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public class DiffCL_Umod {
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// Create layers over the boot layer to test different
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// accessing scenarios of a named module to an unnamed module.
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// Module m1x is a strict module and has not established
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// readability to an unnamed module that p2.c2 is defined in.
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public void test_strictModuleLayer() throws Throwable {
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// Define module: m1x
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// Can read: java.base
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// Packages: p1
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// Packages exported: p1 is exported unqualifiedly
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ModuleDescriptor descriptor_m1x =
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ModuleDescriptor.newModule("m1x")
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.requires("java.base")
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.exports("p1")
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.build();
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// Set up a ModuleFinder containing all modules for this layer.
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ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
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// Resolves "m1x"
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Configuration cf = ModuleLayer.boot()
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.configuration()
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.resolve(finder, ModuleFinder.of(), Set.of("m1x"));
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MyDiffClassLoader.loader1 = new MyDiffClassLoader();
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MyDiffClassLoader.loader2 = new MyDiffClassLoader();
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// map module m1x to class loader.
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// class c2 will be loaded in an unnamed module/loader2
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// to achieve differing class loaders.
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Map<String, ClassLoader> map = new HashMap<>();
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map.put("m1x", MyDiffClassLoader.loader1);
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// Create layer that contains m1x
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ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
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assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
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assertTrue(layer.findLoader("java.base") == null);
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// now use the same loader to load class p1.c1
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Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
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// Attempt access
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try {
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p1_c1_class.newInstance();
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throw new RuntimeException("Test Failed, strict module m1x should not be able " +
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"to access public type p2.c2 defined in unnamed module");
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} catch (IllegalAccessError e) {
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}
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}
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// Module m1x is a strict module and has established
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// readability to an unnamed module that p2.c2 is defined in.
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public void test_strictModuleUnnamedReadableLayer() throws Throwable {
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// Define module: m1x
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// Can read: java.base
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// Packages: p1
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// Packages exported: p1 is exported unqualifiedly
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ModuleDescriptor descriptor_m1x =
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ModuleDescriptor.newModule("m1x")
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.requires("java.base")
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.exports("p1")
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.build();
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// Set up a ModuleFinder containing all modules for this layer.
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ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
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// Resolves "m1x"
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Configuration cf = ModuleLayer.boot()
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.configuration()
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.resolve(finder, ModuleFinder.of(), Set.of("m1x"));
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MyDiffClassLoader.loader1 = new MyDiffClassLoader();
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MyDiffClassLoader.loader2 = new MyDiffClassLoader();
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// map module m1x to class loader.
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// class c2 will be loaded in an unnamed module/loader2
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// to achieve differing class loaders.
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Map<String, ClassLoader> map = new HashMap<>();
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map.put("m1x", MyDiffClassLoader.loader1);
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// Create layer that contains m1x
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ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
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assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
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assertTrue(layer.findLoader("java.base") == null);
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// now use the same loader to load class p1.c1ReadEdgeDiffLoader
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Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1ReadEdgeDiffLoader");
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try {
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// Read edge between m1x and the unnamed module that loads p2.c2 is established in
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// c1ReadEdgeDiffLoader's ctor before attempting access.
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p1_c1_class.newInstance();
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} catch (IllegalAccessError e) {
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throw new RuntimeException("Test Failed, module m1x has established readability to p2/c2 loader's " +
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"unnamed module, access should be allowed: " + e.getMessage());
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}
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}
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// Module m1x is a loose module and thus can read all unnamed modules.
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public void test_looseModuleLayer() throws Throwable {
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// Define module: m1x
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// Can read: java.base
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// Packages: p1
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// Packages exported: p1 is exported unqualifiedly
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ModuleDescriptor descriptor_m1x =
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ModuleDescriptor.newModule("m1x")
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.requires("java.base")
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.exports("p1")
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.build();
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// Set up a ModuleFinder containing all modules for this layer.
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ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
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// Resolves "m1x"
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Configuration cf = ModuleLayer.boot()
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.configuration()
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.resolve(finder, ModuleFinder.of(), Set.of("m1x"));
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MyDiffClassLoader.loader1 = new MyDiffClassLoader();
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MyDiffClassLoader.loader2 = new MyDiffClassLoader();
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// map module m1x to class loader.
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// class c2 will be loaded in an unnamed module/loader2
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// to achieve differing class loaders.
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Map<String, ClassLoader> map = new HashMap<>();
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map.put("m1x", MyDiffClassLoader.loader1);
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// Create layer that contains m1x
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ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
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assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
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assertTrue(layer.findLoader("java.base") == null);
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// now use the same loader to load class p1.c1Loose
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Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1Loose");
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// change m1x to read all unnamed modules
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Module m1x = layer.findModule("m1x").get();
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jdk.internal.module.Modules.addReadsAllUnnamed(m1x);
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try {
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p1_c1_class.newInstance();
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} catch (IllegalAccessError e) {
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throw new RuntimeException("Test Failed, loose module m1x should be able to access " +
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"public type p2.c2 defined in unnamed module: " + e.getMessage());
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}
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}
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public static void main(String args[]) throws Throwable {
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DiffCL_Umod test = new DiffCL_Umod();
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test.test_strictModuleLayer(); // access denied
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test.test_strictModuleUnnamedReadableLayer(); // access allowed
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test.test_looseModuleLayer(); // access allowed
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}
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}
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