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 class p3.c3 defined in module m1 tries to access c4 defined in an unnamed package
29 * and an unnamed module.
30 * @modules java.base/jdk.internal.misc
31 * @library /test/lib
32 * @compile myloaders/MyDiffClassLoader.java
33 * @compile c4.java
34 * @compile p3/c3.jcod
35 * @compile p3/c3ReadEdgeDiffLoader.jcod
36 * @run main/othervm -Xbootclasspath/a:. DiffCL_UmodUpkg
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 p3
52 // package p3 in m1 is exported unqualifiedly
53 //
54 // class p3.c3 defined in m1 tries to access c4 defined in
55 // in unnamed module.
56 //
57 // Two access attempts occur in this test:
58 // 1. The first access is not allowed because a strict module
59 // cannot read an unnamed module.
60 // 2. In this scenario a strict module establishes readability
61 // to the particular unnamed module it is trying to access.
62 // Access is allowed.
63 //
64 public class DiffCL_UmodUpkg {
65
66 // Create Layers over the boot layer to test different
67 // accessing scenarios of a named module to an unnamed module.
68
69 // Module m1 is a strict module and has not established
70 // readability to an unnamed module that c4 is defined in.
71 public void test_strictModuleLayer() throws Throwable {
72
73 // Define module: m1
74 // Can read: java.base
75 // Packages: p3
76 // Packages exported: p3 is exported unqualifiedly
77 ModuleDescriptor descriptor_m1 =
78 new ModuleDescriptor.Builder("m1")
79 .requires("java.base")
80 .exports("p3")
81 .build();
82
83 // Set up a ModuleFinder containing all modules for this layer.
84 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
85
86 // Resolves "m1"
87 Configuration cf = Layer.boot()
88 .configuration()
89 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
90
91 MyDiffClassLoader.loader1 = new MyDiffClassLoader();
92 MyDiffClassLoader.loader2 = new MyDiffClassLoader();
93
94 // map module m1 to class loader.
95 // class c2 will be loaded in an unnamed module/loader2
96 // to achieve differing class loaders.
97 Map<String, ClassLoader> map = new HashMap<>();
98 map.put("m1", MyDiffClassLoader.loader1);
99
100 // Create Layer that contains m1
101 Layer layer = Layer.boot().defineModules(cf, map::get);
102
103 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
104 assertTrue(layer.findLoader("java.base") == null);
105
106 // now use the same loader to load class p3.c3
107 Class p3_c3_class = MyDiffClassLoader.loader1.loadClass("p3.c3");
108
109 // Attempt access
110 try {
111 p3_c3_class.newInstance();
112 throw new RuntimeException("Test Failed, strict module m1 should not be able to access " +
113 "public type c4 defined in unnamed module");
114 } catch (IllegalAccessError e) {
115 }
116 }
117
118 // Module m1 is a strict module and has established
119 // readability to an unnamed module that c4 is defined in.
120 public void test_strictModuleUnnamedReadableLayer() throws Throwable {
121
122 // Define module: m1
123 // Can read: java.base
124 // Packages: p3
125 // Packages exported: p3 is exported unqualifiedly
126 ModuleDescriptor descriptor_m1 =
127 new ModuleDescriptor.Builder("m1")
128 .requires("java.base")
129 .exports("p3")
130 .build();
131
132 // Set up a ModuleFinder containing all modules for this layer.
133 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
134
135 // Resolves "m1"
136 Configuration cf = Layer.boot()
137 .configuration()
138 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
139
140 MyDiffClassLoader.loader1 = new MyDiffClassLoader();
141 MyDiffClassLoader.loader2 = new MyDiffClassLoader();
142
143 // map module m1 to class loader.
144 // class c2 will be loaded in an unnamed module/loader2
145 // to achieve differing class loaders.
146 Map<String, ClassLoader> map = new HashMap<>();
147 map.put("m1", MyDiffClassLoader.loader1);
148
149 // Create Layer that contains m1
150 Layer layer = Layer.boot().defineModules(cf, map::get);
151
152 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
153 assertTrue(layer.findLoader("java.base") == null);
154
155 // now use the same loader to load class p3.c3ReadEdgeDiffLoader
156 Class p3_c3_class = MyDiffClassLoader.loader1.loadClass("p3.c3ReadEdgeDiffLoader");
157
158 try {
159 // Read edge between m1 and the unnamed module that loads c4 is established in
160 // C3ReadEdgeDiffLoader's ctor before attempting access.
161 p3_c3_class.newInstance();
162 } catch (IllegalAccessError e) {
163 throw new RuntimeException("Test Failed, module m1 has established readability to " +
164 "c4 loader's unnamed module, access should be allowed: " + e.getMessage());
165 }
166 }
167
168 public static void main(String args[]) throws Throwable {
169 DiffCL_UmodUpkg test = new DiffCL_UmodUpkg();
170 test.test_strictModuleLayer(); // access denied
171 test.test_strictModuleUnnamedReadableLayer(); // access allowed
172 }
173 }