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