Umod_ExpQualOther.java revision 12290:8953c0318163 
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
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24 */
25
26/*
27 * @test
28 * @summary Test that if package p2 in module m2 is exported to module m3,
29 *          then class p1.c1 in an unnamed module can not read p2.c2 in module m2.
30 * @modules java.base/jdk.internal.misc
31 * @library /test/lib
32 * @compile myloaders/MySameClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @run main/othervm -Xbootclasspath/a:. Umod_ExpQualOther
36 */
37
38import static jdk.test.lib.Asserts.*;
39
40import java.lang.reflect.Layer;
41import java.lang.module.Configuration;
42import java.lang.module.ModuleDescriptor;
43import java.lang.module.ModuleFinder;
44import java.util.HashMap;
45import java.util.Map;
46import java.util.Set;
47import myloaders.MySameClassLoader;
48
49//
50// ClassLoader1 --> defines m1 --> no packages
51//                  defines m2 --> packages p2
52//                  defines m3 --> packages p3
53//
54// m1 can read m2
55// package p2 in m2 is exported to m3
56//
57// class p1.c1 defined in m1 tries to access p2.c2 defined in m2
58// Access denied since although m1 can read m2, p2 is exported only to m3.
59//
60public class Umod_ExpQualOther {
61
62    // Create a Layer over the boot layer.
63    // Define modules within this layer to test access between
64    // publically defined classes within packages of those modules.
65    public void createLayerOnBoot() throws Throwable {
66
67        // Define module:     m1 (need to define m1 to establish the Layer successfully)
68        // Can read:          java.base, m2, m3
69        // Packages:          none
70        // Packages exported: none
71        ModuleDescriptor descriptor_m1 =
72                ModuleDescriptor.module("m1")
73                        .requires("java.base")
74                        .requires("m2")
75                        .requires("m3")
76                        .build();
77
78        // Define module:     m2
79        // Can read:          java.base
80        // Packages:          p2
81        // Packages exported: p2 is exported to m3
82        ModuleDescriptor descriptor_m2 =
83                ModuleDescriptor.module("m2")
84                        .requires("java.base")
85                        .exports("p2", Set.of("m3"))
86                        .build();
87
88        // Define module:     m3
89        // Can read:          java.base
90        // Packages:          p3
91        // Packages exported: none
92        ModuleDescriptor descriptor_m3 =
93                ModuleDescriptor.module("m3")
94                        .requires("java.base")
95                        .build();
96
97        // Set up a ModuleFinder containing all modules for this layer.
98        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2, descriptor_m3);
99
100        // Resolves "m1"
101        Configuration cf = Layer.boot()
102                .configuration()
103                .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
104
105        // map each module to differing class loaders for this test
106        Map<String, ClassLoader> map = new HashMap<>();
107        map.put("m1", MySameClassLoader.loader1);
108        map.put("m2", MySameClassLoader.loader1);
109        map.put("m3", MySameClassLoader.loader1);
110
111        // Create Layer that contains m1, m2 and m3
112        Layer layer = Layer.boot().defineModules(cf, map::get);
113
114        assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1);
115        assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1);
116        assertTrue(layer.findLoader("m3") == MySameClassLoader.loader1);
117        assertTrue(layer.findLoader("java.base") == null);
118
119        // now use the same loader to load class p1.c1
120        Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1");
121        try {
122            p1_c1_class.newInstance();
123            throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m3, not unqualifiedly to everyone)");
124        } catch (IllegalAccessError e) {
125            System.out.println(e.getMessage());
126            if (!e.getMessage().contains("does not export")) {
127                throw new RuntimeException("Wrong message: " + e.getMessage());
128            }
129        }
130    }
131
132    public static void main(String args[]) throws Throwable {
133      Umod_ExpQualOther test = new Umod_ExpQualOther();
134      test.createLayerOnBoot();
135    }
136}
137