1 /* 2 * Copyright (c) 2016, 2018, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @summary Test that if module m1x can not read module m2x, then class p1.c1 27 * in module m1x can not access p2.c2 in module m2x. 28 * @modules java.base/jdk.internal.misc 29 * @library /test/lib 30 * @compile myloaders/MyDiffClassLoader.java 31 * @compile p2/c2.java 32 * @compile p1/c1.java 33 * @run main/othervm -Xbootclasspath/a:. DiffCL_CheckRead 34 */ 35 36 import static jdk.test.lib.Asserts.*; 37 38 import java.lang.module.Configuration; 39 import java.lang.module.ModuleDescriptor; 40 import java.lang.module.ModuleFinder; 41 import java.util.HashMap; 42 import java.util.Map; 43 import java.util.Set; 44 import myloaders.MyDiffClassLoader; 45 46 // 47 // ClassLoader1 --> defines m1x --> packages p1 48 // ClassLoader2 --> defines m2x --> packages p2 49 // defines m3x --> packages p3 50 // 51 // m1x can not read m2x 52 // package p2 in m2x is exported to m1x 53 // 54 // class p1.c1 defined in m1x tries to access p2.c2 defined in m2x. 55 // Access denied since m1x can not read m2x. 56 // 57 public class DiffCL_CheckRead { 58 59 // Create a layer over the boot layer. 60 // Define modules within this layer to test access between 61 // publicly defined classes within packages of those modules. 62 public void createLayerOnBoot() throws Throwable { 63 64 // Define module: m1x 65 // Can read: java.base, m3x 66 // Packages: p1 67 // Packages exported: p1 is exported unqualifiedly 68 ModuleDescriptor descriptor_m1x = 69 ModuleDescriptor.newModule("m1x") 70 .requires("java.base") 71 .requires("m3x") 72 .exports("p1") 73 .build(); 74 75 // Define module: m2x 76 // Can read: java.base 77 // Packages: p2 78 // Packages exported: p2 is exported to m1x 79 ModuleDescriptor descriptor_m2x = 80 ModuleDescriptor.newModule("m2x") 81 .requires("java.base") 82 .exports("p2", Set.of("m1x")) 83 .build(); 84 85 // Define module: m3x 86 // Can read: java.base, m2x 87 // Packages: p3 88 // Packages exported: none 89 ModuleDescriptor descriptor_m3x = 90 ModuleDescriptor.newModule("m3x") 91 .requires("java.base") 92 .requires("m2x") 93 .packages(Set.of("p3")) 94 .build(); 95 96 // Set up a ModuleFinder containing all modules for this layer. 97 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x, descriptor_m2x, descriptor_m3x); 98 99 // Resolves "m1x" 100 Configuration cf = ModuleLayer.boot() 101 .configuration() 102 .resolve(finder, ModuleFinder.of(), Set.of("m1x")); 103 104 // map each module to differing class loaders for this test 105 Map<String, ClassLoader> map = new HashMap<>(); 106 map.put("m1x", MyDiffClassLoader.loader1); 107 map.put("m2x", MyDiffClassLoader.loader2); 108 map.put("m3x", MyDiffClassLoader.loader2); 109 110 // Create layer that contains m1x, m2x and m3x 111 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get); 112 113 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1); 114 assertTrue(layer.findLoader("m2x") == MyDiffClassLoader.loader2); 115 assertTrue(layer.findLoader("m3x") == MyDiffClassLoader.loader2); 116 assertTrue(layer.findLoader("java.base") == null); 117 118 // now use the same loader to load class p1.c1 119 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1"); 120 try { 121 p1_c1_class.newInstance(); 122 throw new RuntimeException("Failed to get IAE (p2 in m2x is exported to m1x but m2x is not readable from m1x)"); 123 } catch (IllegalAccessError e) { 124 System.out.println(e.getMessage()); 125 if (!e.getMessage().contains("cannot access")) { 126 throw new RuntimeException("Wrong message: " + e.getMessage()); 127 } 128 } 129 } 130 131 public static void main(String args[]) throws Throwable { 132 DiffCL_CheckRead test = new DiffCL_CheckRead(); 133 test.createLayerOnBoot(); 134 } 135 }