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, but package p2 in m2x
27 * is exported specifically to module m3x, then class p1.c1 in m1x can not
28 * access p2.c2 in m2x.
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:. DiffCL_ExpQualOther
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 --> packages p1
49 // ClassLoader2 --> defines m2x --> packages p2
50 // defines m3x --> packages p3
51 //
52 // m1x can read m2x
53 // package p2 in m2x is exported to m3x
54 //
55 // class p1.c1 defined in m1x tries to access p2.c2 defined in m2x
56 // Access denied since although m1x can read m2x, p2 is exported only to m3x.
57 //
58 public class DiffCL_ExpQualOther {
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, m3x
67 // Packages: p1
68 // Packages exported: p1 is exported unqualifiedly
69 ModuleDescriptor descriptor_m1x =
70 ModuleDescriptor.newModule("m1x")
71 .requires("java.base")
72 .requires("m2x")
73 .requires("m3x")
74 .exports("p1")
75 .build();
76
77 // Define module: m2x
78 // Can read: java.base, m3x
79 // Packages: p2
80 // Packages exported: p2 is exported to m3x
81 ModuleDescriptor descriptor_m2x =
82 ModuleDescriptor.newModule("m2x")
83 .requires("java.base")
84 .exports("p2", Set.of("m3x"))
85 .build();
86
87 // Define module: m3x
88 // Can read: java.base, m2x
89 // Packages: p3
90 // Packages exported: none
91 ModuleDescriptor descriptor_m3x =
92 ModuleDescriptor.newModule("m3x")
93 .requires("java.base")
94 .requires("m2x")
95 .packages(Set.of("p3"))
96 .build();
97
98 // Set up a ModuleFinder containing all modules for this layer.
99 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x, descriptor_m2x, descriptor_m3x);
100
101 // Resolves "m1x"
102 Configuration cf = ModuleLayer.boot()
103 .configuration()
104 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
105
106 // map each module to differing class loaders for this test
107 Map<String, ClassLoader> map = new HashMap<>();
108 map.put("m1x", MyDiffClassLoader.loader1);
109 map.put("m2x", MyDiffClassLoader.loader2);
110 map.put("m3x", MyDiffClassLoader.loader2);
111
112 // Create layer that contains m1x & m2x
113 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
114
115 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
116 assertTrue(layer.findLoader("m2x") == MyDiffClassLoader.loader2);
117 assertTrue(layer.findLoader("m3x") == MyDiffClassLoader.loader2);
118 assertTrue(layer.findLoader("java.base") == null);
119
120 // now use the same loader to load class p1.c1
121 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
122 try {
123 p1_c1_class.newInstance();
124 throw new RuntimeException("Failed to get IAE (p2 in m2x is exported to m3x not to m1x)");
125 } catch (IllegalAccessError e) {
126 System.out.println(e.getMessage());
127 if (!e.getMessage().contains("does not export")) {
128 throw new RuntimeException("Wrong message: " + e.getMessage());
129 }
130 }
131 }
132
133 public static void main(String args[]) throws Throwable {
134 DiffCL_ExpQualOther test = new DiffCL_ExpQualOther();
135 test.createLayerOnBoot();
136 }
137 }