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 Test that if module m1 can read module m2, but package p2 in m2
29 * is exported specifically to module m3, then class p1.c1 in m1 can not
30 * access p2.c2 in m2.
31 * @modules java.base/jdk.internal.misc
32 * @library /test/lib
33 * @compile myloaders/MyDiffClassLoader.java
34 * @compile p2/c2.java
35 * @compile p1/c1.java
36 * @run main/othervm -Xbootclasspath/a:. DiffCL_ExpQualOther
37 */
38
39 import static jdk.test.lib.Asserts.*;
40
41 import java.lang.reflect.Layer;
42 import java.lang.module.Configuration;
43 import java.lang.module.ModuleDescriptor;
44 import java.lang.module.ModuleFinder;
45 import java.util.HashMap;
46 import java.util.Map;
47 import java.util.Set;
48 import myloaders.MyDiffClassLoader;
49
50 //
51 // ClassLoader1 --> defines m1 --> packages p1
52 // ClassLoader2 --> defines m2 --> packages p2
53 // defines m3 --> packages p3
54 //
55 // m1 can read m2
56 // package p2 in m2 is exported to m3
57 //
58 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2
59 // Access denied since although m1 can read m2, p2 is exported only to m3.
60 //
61 public class DiffCL_ExpQualOther {
62
63 // Create a Layer over the boot layer.
64 // Define modules within this layer to test access between
65 // publically defined classes within packages of those modules.
66 public void createLayerOnBoot() throws Throwable {
67
68 // Define module: m1
69 // Can read: java.base, m2, m3
70 // Packages: p1
71 // Packages exported: p1 is exported unqualifiedly
72 ModuleDescriptor descriptor_m1 =
73 new ModuleDescriptor.Builder("m1")
74 .requires("java.base")
75 .requires("m2")
76 .requires("m3")
77 .exports("p1")
78 .build();
79
80 // Define module: m2
81 // Can read: java.base, m3
82 // Packages: p2
83 // Packages exported: p2 is exported to m3
84 ModuleDescriptor descriptor_m2 =
85 new ModuleDescriptor.Builder("m2")
86 .requires("java.base")
87 .exports("p2", "m3")
88 .build();
89
90 // Define module: m3
91 // Can read: java.base, m2
92 // Packages: p3
93 // Packages exported: none
94 ModuleDescriptor descriptor_m3 =
95 new ModuleDescriptor.Builder("m3")
96 .requires("java.base")
97 .requires("m2")
98 .conceals("p3")
99 .build();
100
101 // Set up a ModuleFinder containing all modules for this layer.
102 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2, descriptor_m3);
103
104 // Resolves "m1"
105 Configuration cf = Layer.boot()
106 .configuration()
107 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
108
109 // map each module to differing class loaders for this test
110 Map<String, ClassLoader> map = new HashMap<>();
111 map.put("m1", MyDiffClassLoader.loader1);
112 map.put("m2", MyDiffClassLoader.loader2);
113 map.put("m3", MyDiffClassLoader.loader2);
114
115 // Create Layer that contains m1 & m2
116 Layer layer = Layer.boot().defineModules(cf, map::get);
117
118 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
119 assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2);
120 assertTrue(layer.findLoader("m3") == MyDiffClassLoader.loader2);
121 assertTrue(layer.findLoader("java.base") == null);
122
123 // now use the same loader to load class p1.c1
124 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
125 try {
126 p1_c1_class.newInstance();
127 throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m3 not to m1)");
128 } catch (IllegalAccessError e) {
129 System.out.println(e.getMessage());
130 if (!e.getMessage().contains("does not export")) {
131 throw new RuntimeException("Wrong message: " + e.getMessage());
132 }
133 }
134 }
135
136 public static void main(String args[]) throws Throwable {
137 DiffCL_ExpQualOther test = new DiffCL_ExpQualOther();
138 test.createLayerOnBoot();
139 }
140 }