153 lines
6.1 KiB
Java
153 lines
6.1 KiB
Java
/*
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* Copyright (c) 2017, 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 in module first_mod cannot read p2.c2 in module second_mod,
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* even after a read edge is added between first_mod and second_mod.
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* Ensures constant access check answers when not accessible due to readability.
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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 p2/c2.java
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* @compile p1/c1.java
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* @compile p4/c4.java
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* @run main/othervm AccessReadTwice
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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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//
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// ClassLoader1 --> defines first_mod --> packages p1, p4
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// defines second_mod --> package p2
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//
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// package p2 in second_mod is exported to first_mod
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//
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// class p1.c1 defined in first_mod tries to access p2.c2 defined in second_mod
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// Access is not allowed, even after a read edge is added between first_mod and second_mod.
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public class AccessReadTwice {
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// Create a layer over the boot layer.
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// Define modules within this layer to test access between
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// publicly defined classes within packages of those modules.
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public void createLayerOnBoot() throws Throwable {
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// Define module: first_mod
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// Can read: java.base
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// Packages: p1, p4
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// Packages exported: none
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ModuleDescriptor descriptor_first_mod =
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ModuleDescriptor.newModule("first_mod")
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.requires("java.base")
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.packages(Set.of("p1", "p4"))
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.build();
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// Define module: second_mod
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// Can read: java.base
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// Packages: p2
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// Packages exported: p2 is exported to first_mod
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ModuleDescriptor descriptor_second_mod =
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ModuleDescriptor.newModule("second_mod")
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.requires("java.base")
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.exports("p2", Set.of("first_mod"))
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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_first_mod, descriptor_second_mod);
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// Resolves "first_mod" and "second_mod"
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Configuration cf = ModuleLayer.boot()
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.configuration()
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.resolve(finder, ModuleFinder.of(), Set.of("first_mod", "second_mod"));
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// Map each module to this class loader
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Map<String, ClassLoader> map = new HashMap<>();
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ClassLoader loader = AccessReadTwice.class.getClassLoader();
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map.put("first_mod", loader);
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map.put("second_mod", loader);
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// Create layer that contains first_mod & second_mod
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ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
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assertTrue(layer.findLoader("first_mod") == loader);
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assertTrue(layer.findLoader("second_mod") == loader);
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assertTrue(layer.findLoader("java.base") == null);
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Class p2_c2_class = loader.loadClass("p2.c2");
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Class p1_c1_class = loader.loadClass("p1.c1");
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Class p4_c4_class = loader.loadClass("p4.c4");
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Module first_mod = p1_c1_class.getModule();
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Module second_mod = p2_c2_class.getModule();
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// Export first_mod/p1 and first_mod/p4 to all unnamed modules so that
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// this test can use them
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jdk.internal.module.Modules.addExportsToAllUnnamed(first_mod, "p1");
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jdk.internal.module.Modules.addExportsToAllUnnamed(first_mod, "p4");
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// First access check for p1.c1
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try {
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p1_c1_class.newInstance();
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throw new RuntimeException("Test Failed, module first_mod should not have access to p2.c2");
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} catch (IllegalAccessError e) {
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String message = e.getMessage();
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if (!(message.contains("cannot access") &&
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message.contains("because module first_mod does not read module second_mod"))) {
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throw new RuntimeException("Wrong message: " + message);
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} else {
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System.out.println("Test Succeeded at attempt #1");
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}
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}
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// Add a read edge from p4/c4's module (first_mod) to second_mod
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p4.c4 c4_obj = new p4.c4();
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c4_obj.addReads(second_mod);
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// Second access check for p1.c1, should have same result as first
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try {
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p1_c1_class.newInstance();
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throw new RuntimeException("Test Failed, access should have been cached above");
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} catch (IllegalAccessError e) {
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String message = e.getMessage();
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if (!(message.contains("cannot access") &&
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message.contains("because module first_mod does not read module second_mod"))) {
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throw new RuntimeException("Wrong message: " + message);
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} else {
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System.out.println("Test Succeeded at attempt #2");
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}
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}
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}
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public static void main(String args[]) throws Throwable {
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AccessReadTwice test = new AccessReadTwice();
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test.createLayerOnBoot();
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}
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}
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