1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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).
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  17  * You should have received a copy of the GNU General Public License version
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  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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  24  */
  25 
  26 /*
  27  * @test
  28  * @summary class c5 in an unnamed module can read module m2x, but package p6 in module m2x is not exported.
  29  *          Access denied since even though unnamed module can read all modules, p6 in module m2x is not exported at all.
  30  * @modules java.base/jdk.internal.misc
  31  * @library /test/lib
  32  * @compile myloaders/MyDiffClassLoader.java
  33  * @compile p6/c6.java
  34  * @compile c5.java
  35  * @run main/othervm -Xbootclasspath/a:. UmodUpkgDiffCL_NotExp
  36  */
  37 
  38 import static jdk.test.lib.Asserts.*;
  39 
  40 import java.lang.module.Configuration;
  41 import java.lang.module.ModuleDescriptor;
  42 import java.lang.module.ModuleFinder;
  43 import java.util.HashMap;
  44 import java.util.Map;
  45 import java.util.Set;
  46 import myloaders.MyDiffClassLoader;
  47 
  48 //
  49 // ClassLoader1 --> defines m1x --> no packages
  50 // ClassLoader2 --> defines m2x --> packages p6
  51 //
  52 // m1x can read m2x
  53 // package p6 in m2x is not exported
  54 //
  55 // class c5 defined in unnamed module tries to access p6.c6 defined in m2x
  56 // Access denied since even though unnamed module can read all modules, p6
  57 // in module m2x is not exported at all.
  58 //
  59 public class UmodUpkgDiffCL_NotExp {
  60 
  61     // Create a layer over the boot layer.
  62     // Define modules within this layer to test access between
  63     // publically defined classes within packages of those modules.
  64     public void createLayerOnBoot() throws Throwable {
  65 
  66         // Define module:     m1x
  67         // Can read:          java.base, m2x
  68         // Packages:          none
  69         // Packages exported: none
  70         ModuleDescriptor descriptor_m1x =
  71                 ModuleDescriptor.newModule("m1x")
  72                         .requires("java.base")
  73                         .requires("m2x")
  74                         .build();
  75 
  76         // Define module:     m2x
  77         // Can read:          java.base
  78         // Packages:          p6
  79         // Packages exported: none
  80         ModuleDescriptor descriptor_m2x =
  81                 ModuleDescriptor.newModule("m2x")
  82                         .requires("java.base")
  83                         .packages(Set.of("p6"))
  84                         .build();
  85 
  86         // Set up a ModuleFinder containing all modules for this layer.
  87         ModuleFinder finder = ModuleLibrary.of(descriptor_m1x, descriptor_m2x);
  88 
  89         // Resolves "m1x"
  90         Configuration cf = ModuleLayer.boot()
  91                 .configuration()
  92                 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
  93 
  94         // map each module to differing class loaders for this test
  95         Map<String, ClassLoader> map = new HashMap<>();
  96         map.put("m1x", MyDiffClassLoader.loader1);
  97         map.put("m2x", MyDiffClassLoader.loader2);
  98 
  99         // Create layer that contains m1x & m2x
 100         ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
 101 
 102         assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
 103         assertTrue(layer.findLoader("m2x") == MyDiffClassLoader.loader2);
 104         assertTrue(layer.findLoader("java.base") == null);
 105 
 106         // now use the same loader to load class c5
 107         // NOTE: module m1x does not define any packages.
 108         //       c5 will be loaded in an unnamed module.
 109         Class c5_class = MyDiffClassLoader.loader1.loadClass("c5");
 110         try {
 111             c5_class.newInstance();
 112             throw new RuntimeException("Failed to get IAE (p6 in m2x is not exported to " +
 113                                        "an unnamed module that c5 is defined within)");
 114         } catch (IllegalAccessError e) {
 115           System.out.println(e.getMessage());
 116           if (!e.getMessage().contains("does not export")) {
 117               throw new RuntimeException("Wrong message: " + e.getMessage());
 118           }
 119         }
 120     }
 121 
 122     public static void main(String args[]) throws Throwable {
 123       UmodUpkgDiffCL_NotExp test = new UmodUpkgDiffCL_NotExp();
 124       test.createLayerOnBoot();
 125     }
 126 }