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 class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2x.
  27  *          Access allowed, an unnamed module can read all modules and p2 in module m2x
  28  *          which is exported unqualifiedly.
  29  * @modules java.base/jdk.internal.misc
  30  * @library /test/lib
  31  * @compile myloaders/MyDiffClassLoader.java
  32  * @compile p2/c2.java
  33  * @compile p1/c1.java
  34  * @run main/othervm -Xbootclasspath/a:. UmodDiffCL_ExpUnqual
  35  */
  36 
  37 import static jdk.test.lib.Asserts.*;
  38 
  39 import java.lang.module.Configuration;
  40 import java.lang.module.ModuleDescriptor;
  41 import java.lang.module.ModuleFinder;
  42 import java.util.HashMap;
  43 import java.util.Map;
  44 import java.util.Set;
  45 import myloaders.MyDiffClassLoader;
  46 
  47 //
  48 // ClassLoader1 --> defines m1x --> no packages
  49 // ClassLoader2 --> defines m2x --> packages p2
  50 //
  51 // m1x can read m2x
  52 // package p2 in m2x is exported unqualifiedly.
  53 //
  54 // class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2x
  55 // Access allowed, an unnamed module can read all modules and p2 in module
  56 //              m2x which is exported unqualifiedly.
  57 //
  58 public class UmodDiffCL_ExpUnqual {
  59 
  60     // Create a layer over the boot layer.
  61     // Define modules within this layer to test access between
  62     // publically defined classes within packages of those modules.
  63     public void createLayerOnBoot() throws Throwable {
  64 
  65         // Define module:     m1x
  66         // Can read:          java.base, m2x
  67         // Packages:          none
  68         // Packages exported: none
  69         ModuleDescriptor descriptor_m1x =
  70                 ModuleDescriptor.newModule("m1x")
  71                         .requires("java.base")
  72                         .requires("m2x")
  73                         .build();
  74 
  75         // Define module:     m2x
  76         // Can read:          java.base
  77         // Packages:          p2
  78         // Packages exported: none
  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         // NOTE: module m1x does not define a package named p1.
 106         //       p1 will be loaded in an unnamed module.
 107         Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
 108         try {
 109             p1_c1_class.newInstance();
 110         } catch (IllegalAccessError e) {
 111             throw new RuntimeException("Test Failed, p1.c1 defined in unnamed module can access p2.c2 in module m2x");
 112         }
 113     }
 114 
 115     public static void main(String args[]) throws Throwable {
 116       UmodDiffCL_ExpUnqual test = new UmodDiffCL_ExpUnqual();
 117       test.createLayerOnBoot();
 118     }
 119 }