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 not read module m2, then class p1.c1 29 * in module m1 can not access p2.c2 in module m2. 30 * @modules java.base/jdk.internal.misc 31 * @library /testlibrary /test/lib 32 * @compile myloaders/MySameClassLoader.java 33 * @compile p2/c2.java 34 * @compile p1/c1.java 35 * @build CheckRead 36 * @run main/othervm -Xbootclasspath/a:. CheckRead 37 */ 38 39 import static jdk.test.lib.Asserts.*; 40 41 import java.lang.reflect.Layer; 42 import java.lang.module.Configuration; 43 import java.lang.module.ModuleDescriptor; 44 import java.lang.module.ModuleFinder; 45 import java.util.HashMap; 46 import java.util.Map; 47 import java.util.Set; 48 import myloaders.MySameClassLoader; 49 50 // 51 // ClassLoader1 --> defines m1 --> packages p1 52 // defines m2 --> packages p2 53 // defines m3 --> packages p3 54 // 55 // m1 can not read m2 56 // package p2 in m2 is exported to m1 57 // 58 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2. 59 // Access denied since m1 can not read m2. 60 // 61 public class CheckRead { 62 63 // Create a Layer over the boot layer. 64 // Define modules within this layer to test access between 65 // publicly defined classes within packages of those modules. 66 public void createLayerOnBoot() throws Throwable { 67 68 // Define module: m1 69 // Can read: java.base, m3 70 // Packages: p1 71 // Packages exported: p1 is exported unqualifiedly 72 ModuleDescriptor descriptor_m1 = 73 new ModuleDescriptor.Builder("m1") 74 .requires("java.base") 75 .requires("m3") 76 .exports("p1") 77 .build(); 78 79 // Define module: m2 80 // Can read: java.base 81 // Packages: p2 82 // Packages exported: p2 is exported to m1 83 ModuleDescriptor descriptor_m2 = 84 new ModuleDescriptor.Builder("m2") 85 .requires("java.base") 86 .exports("p2", "m1") 87 .build(); 88 89 // Define module: m3 90 // Can read: java.base, m2 91 // Packages: p3 92 // Packages exported: none 93 ModuleDescriptor descriptor_m3 = 94 new ModuleDescriptor.Builder("m3") 95 .requires("java.base") 96 .requires("m2") 97 .conceals("p3") 98 .build(); 99 100 // Set up a ModuleFinder containing all modules for this layer. 101 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2, descriptor_m3); 102 103 // Resolves "m1" 104 Configuration cf = Layer.boot() 105 .configuration() 106 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); 107 108 // map each module to differing class loaders for this test 109 Map<String, ClassLoader> map = new HashMap<>(); 110 map.put("m1", MySameClassLoader.loader1); 111 map.put("m2", MySameClassLoader.loader1); 112 map.put("m3", MySameClassLoader.loader1); 113 114 // Create Layer that contains m1, m2 and m3 115 Layer layer = Layer.boot().defineModules(cf, map::get); 116 117 assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1); 118 assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1); 119 assertTrue(layer.findLoader("m3") == MySameClassLoader.loader1); 120 assertTrue(layer.findLoader("java.base") == null); 121 122 // now use the same loader to load class p1.c1 123 Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1"); 124 try { 125 p1_c1_class.newInstance(); 126 throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m1 but m2 is not readable from m1)"); 127 } catch (IllegalAccessError e) { 128 System.out.println(e.getMessage()); 129 if (!e.getMessage().contains("cannot access")) { 130 throw new RuntimeException("Wrong message: " + e.getMessage()); 131 } 132 } 133 } 134 135 public static void main(String args[]) throws Throwable { 136 CheckRead test = new CheckRead(); 137 test.createLayerOnBoot(); 138 } 139 }