Umod_ExpUnqual.java revision 12723:afedee84773e
1/* 2 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* 27 * @test 28 * @summary Test if package p2 in module m2x is exported unqualifiedly, 29 * then class p1.c1 in an unnamed module can read p2.c2 in module m2x. 30 * @modules java.base/jdk.internal.misc 31 * @library /test/lib 32 * @compile myloaders/MySameClassLoader.java 33 * @compile p2/c2.java 34 * @compile p1/c1.java 35 * @run main/othervm -Xbootclasspath/a:. Umod_ExpUnqual 36 */ 37 38import static jdk.test.lib.Asserts.*; 39 40import java.lang.module.Configuration; 41import java.lang.module.ModuleDescriptor; 42import java.lang.module.ModuleFinder; 43import java.util.HashMap; 44import java.util.Map; 45import java.util.Set; 46import myloaders.MySameClassLoader; 47 48// 49// ClassLoader1 --> defines m1x --> no packages 50// defines m2x --> packages p2 51// 52// m1x can read m2x 53// package p2 in m2x is exported unqualifiedly 54// 55// class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2x 56// Access allowed, an unnamed module can read all modules and p2 in module 57// m2x which is exported unqualifiedly. 58 59public class Umod_ExpUnqual { 60 61 // Create a layer over the boot layer. 62 // Define modules within this layer to test access between 63 // publically defined classes within packages of those modules. 64 public void createLayerOnBoot() throws Throwable { 65 66 // Define module: m1x 67 // Can read: java.base, m2x 68 // Packages: none 69 // Packages exported: none 70 ModuleDescriptor descriptor_m1x = 71 ModuleDescriptor.newModule("m1x") 72 .requires("java.base") 73 .requires("m2x") 74 .build(); 75 76 // Define module: m2x 77 // Can read: java.base 78 // Packages: p2 79 // Packages exported: p2 is exported unqualifiedly 80 ModuleDescriptor descriptor_m2x = 81 ModuleDescriptor.newModule("m2x") 82 .requires("java.base") 83 .exports("p2") 84 .build(); 85 86 // Set up a ModuleFinder containing all modules for this layer. 87 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x, descriptor_m2x); 88 89 // Resolves "m1x" 90 Configuration cf = ModuleLayer.boot() 91 .configuration() 92 .resolve(finder, ModuleFinder.of(), Set.of("m1x")); 93 94 // map each module to differing class loaders for this test 95 Map<String, ClassLoader> map = new HashMap<>(); 96 map.put("m1x", MySameClassLoader.loader1); 97 map.put("m2x", MySameClassLoader.loader1); 98 99 // Create layer that contains m1x & m2x 100 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get); 101 102 assertTrue(layer.findLoader("m1x") == MySameClassLoader.loader1); 103 assertTrue(layer.findLoader("m2x") == MySameClassLoader.loader1); 104 assertTrue(layer.findLoader("java.base") == null); 105 106 // now use the same loader to load class p1.c1 107 Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1"); 108 try { 109 p1_c1_class.newInstance(); 110 } catch (IllegalAccessError e) { 111 throw new RuntimeException("Test Failed, an unnamed module can access public type " + 112 "p2.c2 since it is exported unqualifiedly"); 113 } 114 } 115 116 public static void main(String args[]) throws Throwable { 117 Umod_ExpUnqual test = new Umod_ExpUnqual(); 118 test.createLayerOnBoot(); 119 } 120} 121