DiffCL_PkgNotExp.java revision 12290:8953c0318163
1/* 2 * Copyright (c) 2016, 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 that if module m1 can read module m2, but package p2 in m2 is not 29 * exported, then class p1.c1 in m1 can not read p2.c2 in m2. 30 * @modules java.base/jdk.internal.misc 31 * @library /test/lib 32 * @compile myloaders/MyDiffClassLoader.java 33 * @compile p2/c2.java 34 * @compile p1/c1.java 35 * @run main/othervm -Xbootclasspath/a:. DiffCL_PkgNotExp 36 */ 37 38import static jdk.test.lib.Asserts.*; 39 40import java.lang.reflect.Layer; 41import java.lang.module.Configuration; 42import java.lang.module.ModuleDescriptor; 43import java.lang.module.ModuleFinder; 44import java.util.HashMap; 45import java.util.Map; 46import java.util.Set; 47import myloaders.MyDiffClassLoader; 48 49// 50// ClassLoader1 --> defines m1 --> packages p1 51// ClassLoader2 --> defines m2 --> packages p2 52// 53// m1 can read m2 54// package p2 in m2 is not exported 55// 56// class p1.c1 defined in m1 tries to access p2.c2 defined in m2 57// Access denied since p2 is not exported. 58// 59public class DiffCL_PkgNotExp { 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: m1 67 // Can read: java.base, m2 68 // Packages: p1 69 // Packages exported: p1 is exported unqualifiedly 70 ModuleDescriptor descriptor_m1 = 71 ModuleDescriptor.module("m1") 72 .requires("java.base") 73 .requires("m2") 74 .exports("p1") 75 .build(); 76 77 // Define module: m2 78 // Can read: java.base 79 // Packages: p2 80 // Packages exported: none 81 ModuleDescriptor descriptor_m2 = 82 ModuleDescriptor.module("m2") 83 .requires("java.base") 84 .contains("p2") 85 .build(); 86 87 // Set up a ModuleFinder containing all modules for this layer. 88 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2); 89 90 // Resolves "m1" 91 Configuration cf = Layer.boot() 92 .configuration() 93 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); 94 95 // map each module to differing class loaders for this test 96 Map<String, ClassLoader> map = new HashMap<>(); 97 map.put("m1", MyDiffClassLoader.loader1); 98 map.put("m2", MyDiffClassLoader.loader2); 99 100 // Create Layer that contains m1 & m2 101 Layer layer = Layer.boot().defineModules(cf, map::get); 102 103 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1); 104 assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2); 105 assertTrue(layer.findLoader("java.base") == null); 106 107 // now use the same loader to load class p1.c1 108 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1"); 109 try { 110 p1_c1_class.newInstance(); 111 throw new RuntimeException("Failed to get IAE (p2 in m2 is not exported)"); 112 } catch (IllegalAccessError e) { 113 System.out.println(e.getMessage()); 114 if (!e.getMessage().contains("does not export")) { 115 throw new RuntimeException("Wrong message: " + e.getMessage()); 116 } 117 } 118 } 119 120 public static void main(String args[]) throws Throwable { 121 DiffCL_PkgNotExp test = new DiffCL_PkgNotExp(); 122 test.createLayerOnBoot(); 123 } 124} 125 126