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 29 * is exported specifically to module m3, then class p1.c1 in m1 can not 30 * access p2.c2 in m2. 31 * @modules java.base/jdk.internal.misc 32 * @library /testlibrary /test/lib 33 * @compile myloaders/MySameClassLoader.java 34 * @compile p2/c2.java 35 * @compile p1/c1.java 36 * @build ExpQualOther 37 * @run main/othervm -Xbootclasspath/a:. ExpQualOther 38 */ 39 40 import static jdk.test.lib.Asserts.*; 41 42 import java.lang.reflect.Layer; 43 import java.lang.module.Configuration; 44 import java.lang.module.ModuleDescriptor; 45 import java.lang.module.ModuleFinder; 46 import java.util.HashMap; 47 import java.util.Map; 48 import java.util.Set; 49 import myloaders.MySameClassLoader; 50 51 // 52 // ClassLoader1 --> defines m1 --> packages p1 53 // defines m2 --> packages p2 54 // defines m3 --> packages p3 55 // 56 // m1 can read m2 57 // package p2 in m2 is exported to m3 58 // 59 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2 60 // Access denied since although m1 can read m2, p2 is exported only to m3. 61 // 62 public class ExpQualOther { 63 64 // Create a Layer over the boot layer. 65 // Define modules within this layer to test access between 66 // publically defined classes within packages of those modules. 67 public void createLayerOnBoot() throws Throwable { 68 69 // Define module: m1 70 // Can read: java.base, m2, m3 71 // Packages: p1 72 // Packages exported: p1 is exported unqualifiedly 73 ModuleDescriptor descriptor_m1 = 74 new ModuleDescriptor.Builder("m1") 75 .requires("java.base") 76 .requires("m2") 77 .requires("m3") 78 .exports("p1") 79 .build(); 80 81 // Define module: m2 82 // Can read: java.base 83 // Packages: p2 84 // Packages exported: p2 is exported to m3 85 ModuleDescriptor descriptor_m2 = 86 new ModuleDescriptor.Builder("m2") 87 .requires("java.base") 88 .exports("p2", "m3") 89 .build(); 90 91 // Define module: m3 92 // Can read: java.base, m2 93 // Packages: p3 94 // Packages exported: none 95 ModuleDescriptor descriptor_m3 = 96 new ModuleDescriptor.Builder("m3") 97 .requires("java.base") 98 .requires("m2") 99 .conceals("p3") 100 .build(); 101 102 // Set up a ModuleFinder containing all modules for this layer. 103 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2, descriptor_m3); 104 105 // Resolves "m1" 106 Configuration cf = Layer.boot() 107 .configuration() 108 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); 109 110 // map each module to differing class loaders for this test 111 Map<String, ClassLoader> map = new HashMap<>(); 112 map.put("m1", MySameClassLoader.loader1); 113 map.put("m2", MySameClassLoader.loader1); 114 map.put("m3", MySameClassLoader.loader1); 115 116 // Create Layer that contains m1 & m2 117 Layer layer = Layer.boot().defineModules(cf, map::get); 118 119 assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1); 120 assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1); 121 assertTrue(layer.findLoader("m3") == MySameClassLoader.loader1); 122 assertTrue(layer.findLoader("java.base") == null); 123 124 // now use the same loader to load class p1.c1 125 Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1"); 126 try { 127 p1_c1_class.newInstance(); 128 throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m3 not to m1)"); 129 } catch (IllegalAccessError e) { 130 System.out.println(e.getMessage()); 131 if (!e.getMessage().contains("does not export")) { 132 throw new RuntimeException("Wrong message: " + e.getMessage()); 133 } 134 } 135 } 136 137 public static void main(String args[]) throws Throwable { 138 ExpQualOther test = new ExpQualOther(); 139 test.createLayerOnBoot(); 140 } 141 }