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 unnamed module.
29 * @modules java.base/jdk.internal.misc
30 * @library /testlibrary /test/lib
31 * @compile myloaders/MySameClassLoader.java
32 * @compile c4.java
33 * @compile p3/c3.jcod
34 * @compile p3/c3ReadEdge.jcod
35 * @build UmodUPkg
36 * @run main/othervm -Xbootclasspath/a:. UmodUPkg
37 */
38
39 import static jdk.test.lib.Asserts.*;
40
41 import java.lang.module.Configuration;
42 import java.lang.module.ModuleDescriptor;
43 import java.lang.module.ModuleFinder;
44 import java.lang.reflect.Layer;
45 import java.lang.reflect.Module;
46 import java.util.HashMap;
47 import java.util.Map;
48 import java.util.Set;
49 import myloaders.MySameClassLoader;
50
51 //
52 // ClassLoader1 --> defines m1 --> packages p3
53 // package p3 in m1 is exported unqualifiedly
54 //
55 // class p3.c3 defined in m1 tries to access c4 defined in
56 // in unnamed module.
57 //
58 // Two access attempts occur in this test:
59 // 1. The first access is not allowed because a strict module
60 // cannot read an unnamed module.
61 // 2. In this scenario a strict module establishes readability
62 // to the particular unnamed module it is trying to access.
63 // Access is allowed.
64 //
65 public class UmodUPkg {
66
67 // Create Layers over the boot layer to test different
68 // accessing scenarios of a named module to an unnamed module.
69
70 // Module m1 is a strict module and has not established
71 // readability to an unnamed module that c4 is defined in.
72 public void test_strictModuleLayer() throws Throwable {
73
74 // Define module: m1
75 // Can read: java.base
76 // Packages: p3
77 // Packages exported: p3 is exported unqualifiedly
78 ModuleDescriptor descriptor_m1 =
79 new ModuleDescriptor.Builder("m1")
80 .requires("java.base")
81 .exports("p3")
82 .build();
83
84 // Set up a ModuleFinder containing all modules for this layer.
85 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
86
87 // Resolves "m1"
88 Configuration cf = Layer.boot()
89 .configuration()
90 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
91
92 // map module m1 to class loader.
93 // class c4 will be loaded in an unnamed module/loader.
94 MySameClassLoader loader = new MySameClassLoader();
95 Map<String, ClassLoader> map = new HashMap<>();
96 map.put("m1", loader);
97
98 // Create Layer that contains m1
99 Layer layer = Layer.boot().defineModules(cf, map::get);
100
101 assertTrue(layer.findLoader("m1") == loader);
102 assertTrue(layer.findLoader("java.base") == null);
103
104 // now use the same loader to load class p3.c3
105 Class p3_c3_class = loader.loadClass("p3.c3");
106
107 // Attempt access
108 try {
109 p3_c3_class.newInstance();
110 throw new RuntimeException("Test Failed, strict module m1, type p3.c3, should not be able to access " +
111 "public type c4 defined in unnamed module");
112 } catch (IllegalAccessError e) {
113 }
114 }
115
116 // Module m1 is a strict module and has established
117 // readability to an unnamed module that c4 is defined in.
118 public void test_strictModuleUnnamedReadableLayer() throws Throwable {
119
120 // Define module: m1
121 // Can read: java.base
122 // Packages: p3
123 // Packages exported: p3 is exported unqualifiedly
124 ModuleDescriptor descriptor_m1 =
125 new ModuleDescriptor.Builder("m1")
126 .requires("java.base")
127 .exports("p3")
128 .build();
129
130 // Set up a ModuleFinder containing all modules for this layer.
131 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
132
133 // Resolves "m1"
134 Configuration cf = Layer.boot()
135 .configuration()
136 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
137
138 MySameClassLoader loader = new MySameClassLoader();
139 // map module m1 to class loader.
140 // class c4 will be loaded in an unnamed module/loader.
141 Map<String, ClassLoader> map = new HashMap<>();
142 map.put("m1", loader);
143
144 // Create Layer that contains m1
145 Layer layer = Layer.boot().defineModules(cf, map::get);
146
147 assertTrue(layer.findLoader("m1") == loader);
148 assertTrue(layer.findLoader("java.base") == null);
149
150 // now use the same loader to load class p3.c3ReadEdge
151 Class p3_c3_class = loader.loadClass("p3.c3ReadEdge");
152
153 try {
154 // Read edge between m1 and the unnamed module that loads c4 is established in
155 // c3ReadEdge's ctor before attempting access.
156 p3_c3_class.newInstance();
157 } catch (IllegalAccessError e) {
158 throw new RuntimeException("Test Failed, module m1, type p3.c3ReadEdge, has established readability to " +
159 "c4 loader's unnamed module, access should be allowed: " + e.getMessage());
160 }
161 }
162
163 public static void main(String args[]) throws Throwable {
164 UmodUPkg test = new UmodUPkg();
165 test.test_strictModuleLayer(); // access denied
166 test.test_strictModuleUnnamedReadableLayer(); // access allowed
167 }
168 }