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 class p1.c1 defined in m1 tries to access p2.c2 defined in m2.

    29  *          Access allowed since m1 can read m2 and package p2 is exported to m1.

    30  * @library /testlibrary /test/lib

    31  * @compile myloaders/MyDiffClassLoader.java

    32  * @compile p2/c2.java

    33  * @compile p1/c1.java

    34  * @build DiffCL_ExpQualToM1

    35  * @run main/othervm -Xbootclasspath/a:. DiffCL_ExpQualToM1

    36  */

    37 

    38 import static jdk.test.lib.Asserts.*;

    39 

    40 import java.lang.reflect.Layer;

    41 import java.lang.module.Configuration;

    42 import java.lang.module.ModuleDescriptor;

    43 import java.lang.module.ModuleFinder;

    44 import java.util.HashMap;

    45 import java.util.Map;

    46 import java.util.Set;

    47 import myloaders.MyDiffClassLoader;

    48 

    49 //

    50 // ClassLoader1 --> defines m1 --> packages p1

    51 // ClassLoader2 --> defines m2 --> packages p2

    52 //

    53 // m1 can read m2

    54 // package p2 in m2 is exported to m1

    55 //

    56 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2

    57 // Access allowed since m1 can read m2 and package p2 is exported to m1.

    58 //

    59 public class DiffCL_ExpQualToM1 {

    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:     m1

    67         // Can read:          java.base, m2

    68         // Packages:          p1

    69         // Packages exported: p1 is exported to unqualifiedly

    70         ModuleDescriptor descriptor_m1 =

    71                 new ModuleDescriptor.Builder("m1")

    72                         .requires("java.base")

    73                         .requires("m2")

    74                         .exports("p1")

    75                         .build();

    76 

    77         // Define module:     m2

    78         // Can read:          java.base

    79         // Packages:          p2

    80         // Packages exported: package p2 is exported to m1

    81         ModuleDescriptor descriptor_m2 =

    82                 new ModuleDescriptor.Builder("m2")

    83                         .requires("java.base")

    84                         .exports("p2", "m1")

    85                         .build();

    86 

    87         // Set up a ModuleFinder containing all modules for this layer.

    88         ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);

    89 

    90         // Resolves "m1"

    91         Configuration cf = Layer.boot()

    92                 .configuration()

    93                 .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1"));

    94 

    95         // map each module to differing class loaders for this test

    96         Map<String, ClassLoader> map = new HashMap<>();

    97         map.put("m1", MyDiffClassLoader.loader1);

    98         map.put("m2", MyDiffClassLoader.loader2);

    99 

   100         // Create Layer that contains m1 & m2

   101         Layer layer = Layer.boot().defineModules(cf, map::get);

   102 

   103         assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);

   104         assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2);

   105         assertTrue(layer.findLoader("java.base") == null);

   106 

   107         // now use the same loader to load class p1.c1

   108         Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");

   109         try {

   110             p1_c1_class.newInstance();

   111         } catch (IllegalAccessError e) {

   112             throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");

   113         }

   114     }

   115 

   116     public static void main(String args[]) throws Throwable {

   117       DiffCL_ExpQualToM1 test = new DiffCL_ExpQualToM1();

   118       test.createLayerOnBoot();

   119     }

   120 }