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 read module m2x, and package p2 in m2x is 27 * exported unqualifiedly, then class p1.c1 in m1x can read p2.c2 in 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_ExpUnqual 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 // 50 // m1x can read m2x 51 // package p2 in m2x is exported to m1x 52 // 53 // class p1.c1 defined in m1x tries to access p2.c2 defined in m2x 54 // Access allowed since m1x can read m2x and package p2 is exported 55 // unqualifiedly. 56 // 57 public class DiffCL_ExpUnqual { 58 59 // Create a layer over the boot layer. 60 // Define modules within this layer to test access between 61 // publically defined classes within packages of those modules. 62 public void createLayerOnBoot() throws Throwable { 63 64 // Define module: m1x 65 // Can read: java.base, m2x 66 // Packages: p1 67 // Packages exported: p1 is exported unqualifiedly 68 ModuleDescriptor descriptor_m1x = 69 ModuleDescriptor.newModule("m1x") 70 .requires("java.base") 71 .requires("m2x") 72 .exports("p1") 73 .build(); 74 75 // Define module: m2x 76 // Can read: java.base 77 // Packages: p2 78 // Packages exported: package p2 is exported to m1x 79 ModuleDescriptor descriptor_m2x = 80 ModuleDescriptor.newModule("m2x") 81 .requires("java.base") 82 .exports("p2") 83 .build(); 84 85 // Set up a ModuleFinder containing all modules for this layer. 86 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x, descriptor_m2x); 87 88 // Resolves "m1x" 89 Configuration cf = ModuleLayer.boot() 90 .configuration() 91 .resolve(finder, ModuleFinder.of(), Set.of("m1x")); 92 93 // map each module to differing class loaders for this test 94 Map<String, ClassLoader> map = new HashMap<>(); 95 map.put("m1x", MyDiffClassLoader.loader1); 96 map.put("m2x", MyDiffClassLoader.loader2); 97 98 // Create layer that contains m1x & m2x 99 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get); 100 101 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1); 102 assertTrue(layer.findLoader("m2x") == MyDiffClassLoader.loader2); 103 assertTrue(layer.findLoader("java.base") == null); 104 105 // now use the same loader to load class p1.c1 106 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1"); 107 try { 108 p1_c1_class.newInstance(); 109 } catch (IllegalAccessError e) { 110 throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1x"); 111 } 112 } 113 114 public static void main(String args[]) throws Throwable { 115 DiffCL_ExpUnqual test = new DiffCL_ExpUnqual(); 116 test.createLayerOnBoot(); 117 } 118 }