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 p1.c1 defined in m1 tries to access p2.c2 defined in unnamed module.
29 * @library /test/lib
30 * @modules java.base/jdk.internal.misc
31 * @modules java.base/jdk.internal.module
32 * @compile myloaders/MySameClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @compile p1/c1ReadEdge.java
36 * @compile p1/c1Loose.java
37 * @run main/othervm -Xbootclasspath/a:. Umod
38 */
39
40 import static jdk.test.lib.Asserts.*;
41
42 import java.lang.reflect.Layer;
43 import java.lang.module.Configuration;
44 import java.lang.module.ModuleDescriptor;
45 import java.lang.module.ModuleFinder;
46 import java.lang.reflect.Module;
47 import java.util.HashMap;
48 import java.util.Map;
49 import java.util.Set;
50 import myloaders.MySameClassLoader;
51
52 //
53 // ClassLoader1 --> defines m1 --> packages p1
54 // package p1 in m1 is exported unqualifiedly
55 //
56 // class p1.c1 defined in m1 tries to access p2.c2 defined in
57 // in unnamed module.
58 //
59 // Three access attempts occur in this test:
60 // 1. The first access is not allowed because a strict module
61 // cannot read an unnamed module.
62 // 2. In this scenario a strict module establishes readability
63 // to the particular unnamed module it is trying to access.
64 // Access is allowed.
65 // 3. Module m1 in the test_looseModuleLayer() method
66 // is transitioned to a loose module, access
67 // to all unnamed modules is allowed.
68 //
69 public class Umod {
70
71 // Create Layers over the boot layer to test different
72 // accessing scenarios of a named module to an unnamed module.
73
74 // Module m1 is a strict module and has not established
75 // readability to an unnamed module that p2.c2 is defined in.
76 public void test_strictModuleLayer() throws Throwable {
77
78 // Define module: m1
79 // Can read: java.base
80 // Packages: p1
81 // Packages exported: p1 is exported unqualifiedly
82 ModuleDescriptor descriptor_m1 =
83 new ModuleDescriptor.Builder("m1")
84 .requires("java.base")
85 .exports("p1")
86 .build();
87
88 // Set up a ModuleFinder containing all modules for this layer.
89 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
90
91 // Resolves "m1"
92 Configuration cf = Layer.boot()
93 .configuration()
94 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
95
96 // map module m1 to class loader.
97 // class c2 will be loaded in an unnamed module/loader.
98 MySameClassLoader loader = new MySameClassLoader();
99 Map<String, ClassLoader> map = new HashMap<>();
100 map.put("m1", loader);
101
102 // Create Layer that contains m1
103 Layer layer = Layer.boot().defineModules(cf, map::get);
104
105 assertTrue(layer.findLoader("m1") == loader);
106 assertTrue(layer.findLoader("java.base") == null);
107
108 // now use the same loader to load class p1.c1
109 Class p1_c1_class = loader.loadClass("p1.c1");
110
111 // Attempt access
112 try {
113 p1_c1_class.newInstance();
114 throw new RuntimeException("Test Failed, strict module m1, type p1.c1, should not be able " +
115 "to access public type p2.c2 defined in unnamed module");
116 } catch (IllegalAccessError e) {
117 }
118 }
119
120 // Module m1 is a strict module and has established
121 // readability to an unnamed module that p2.c2 is defined in.
122 public void test_strictModuleUnnamedReadableLayer() throws Throwable {
123
124 // Define module: m1
125 // Can read: java.base
126 // Packages: p1
127 // Packages exported: p1 is exported unqualifiedly
128 ModuleDescriptor descriptor_m1 =
129 new ModuleDescriptor.Builder("m1")
130 .requires("java.base")
131 .exports("p1")
132 .build();
133
134 // Set up a ModuleFinder containing all modules for this layer.
135 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
136
137 // Resolves "m1"
138 Configuration cf = Layer.boot()
139 .configuration()
140 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
141
142 MySameClassLoader loader = new MySameClassLoader();
143 // map module m1 to class loader.
144 // class c2 will be loaded in an unnamed module/loader.
145 Map<String, ClassLoader> map = new HashMap<>();
146 map.put("m1", loader);
147
148 // Create Layer that contains m1
149 Layer layer = Layer.boot().defineModules(cf, map::get);
150
151 assertTrue(layer.findLoader("m1") == loader);
152 assertTrue(layer.findLoader("java.base") == null);
153
154 // now use the same loader to load class p1.c1ReadEdge
155 Class p1_c1_class = loader.loadClass("p1.c1ReadEdge");
156
157 try {
158 // Read edge between m1 and the unnamed module that loads p2.c2 is established in
159 // c1ReadEdge's ctor before attempting access.
160 p1_c1_class.newInstance();
161 } catch (IllegalAccessError e) {
162 throw new RuntimeException("Test Failed, strict module m1, type p1.c1ReadEdge, should be able to acccess public type " +
163 "p2.c2 defined in unnamed module: " + e.getMessage());
164 }
165 }
166
167 // Module m1 is a loose module and thus can read all unnamed modules.
168 public void test_looseModuleLayer() throws Throwable {
169
170 // Define module: m1
171 // Can read: java.base
172 // Packages: p1
173 // Packages exported: p1 is exported unqualifiedly
174 ModuleDescriptor descriptor_m1 =
175 new ModuleDescriptor.Builder("m1")
176 .requires("java.base")
177 .exports("p1")
178 .build();
179
180 // Set up a ModuleFinder containing all modules for this layer.
181 ModuleFinder finder = ModuleLibrary.of(descriptor_m1);
182
183 // Resolves "m1"
184 Configuration cf = Layer.boot()
185 .configuration()
186 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
187
188 MySameClassLoader loader = new MySameClassLoader();
189 // map module m1 to class loader.
190 // class c2 will be loaded in an unnamed module/loader.
191 Map<String, ClassLoader> map = new HashMap<>();
192 map.put("m1", loader);
193
194 // Create Layer that contains m1
195 Layer layer = Layer.boot().defineModules(cf, map::get);
196
197 assertTrue(layer.findLoader("m1") == loader);
198 assertTrue(layer.findLoader("java.base") == null);
199
200 // now use the same loader to load class p1.c1Loose
201 Class p1_c1_class = loader.loadClass("p1.c1Loose");
202
203 // change m1 to read all unnamed modules
204 Module m1 = layer.findModule("m1").get();
205 jdk.internal.module.Modules.addReadsAllUnnamed(m1);
206
207 try {
208 p1_c1_class.newInstance();
209 } catch (IllegalAccessError e) {
210 throw new RuntimeException("Test Failed, strict module m1, type p1.c1Loose, should be able to acccess public type " +
211 "p2.c2 defined in unnamed module: " + e.getMessage());
212 }
213 }
214
215 public static void main(String args[]) throws Throwable {
216 Umod test = new Umod();
217 test.test_strictModuleLayer(); // access denied
218 test.test_strictModuleUnnamedReadableLayer(); // access allowed
219 test.test_looseModuleLayer(); // access allowed
220 }
221 }