1 /*
2 * Copyright (c) 2016, 2017, 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
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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 *
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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 m1x 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/MyDiffClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @compile p1/c1ReadEdgeDiffLoader.java
36 * @compile p1/c1Loose.java
37 * @run main/othervm -Xbootclasspath/a:. DiffCL_Umod
38 */
39
40 import static jdk.test.lib.Asserts.*;
41
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 m1x --> packages p1
52 // package p1 in m1x is exported unqualifiedly
53 //
54 // class p1.c1 defined in m1x tries to access p2.c2 defined in
55 // in unnamed module.
56 //
57 // Three 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 // 3. Module m1x in the test_looseModuleLayer() method
64 // is transitioned to a loose module, access
65 // to all unnamed modules is allowed.
66 //
67 public class DiffCL_Umod {
68
69 // Create layers over the boot layer to test different
70 // accessing scenarios of a named module to an unnamed module.
71
72 // Module m1x is a strict module and has not established
73 // readability to an unnamed module that p2.c2 is defined in.
74 public void test_strictModuleLayer() throws Throwable {
75
76 // Define module: m1x
77 // Can read: java.base
78 // Packages: p1
79 // Packages exported: p1 is exported unqualifiedly
80 ModuleDescriptor descriptor_m1x =
81 ModuleDescriptor.newModule("m1x")
82 .requires("java.base")
83 .exports("p1")
84 .build();
85
86 // Set up a ModuleFinder containing all modules for this layer.
87 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
88
89 // Resolves "m1x"
90 Configuration cf = ModuleLayer.boot()
91 .configuration()
92 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
93
94 MyDiffClassLoader.loader1 = new MyDiffClassLoader();
95 MyDiffClassLoader.loader2 = new MyDiffClassLoader();
96
97 // map module m1x to class loader.
98 // class c2 will be loaded in an unnamed module/loader2
99 // to achieve differing class loaders.
100 Map<String, ClassLoader> map = new HashMap<>();
101 map.put("m1x", MyDiffClassLoader.loader1);
102
103 // Create layer that contains m1x
104 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
105
106 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
107 assertTrue(layer.findLoader("java.base") == null);
108
109 // now use the same loader to load class p1.c1
110 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
111
112 // Attempt access
113 try {
114 p1_c1_class.newInstance();
115 throw new RuntimeException("Test Failed, strict module m1x should not be able " +
116 "to access public type p2.c2 defined in unnamed module");
117 } catch (IllegalAccessError e) {
118 }
119 }
120
121 // Module m1x is a strict module and has established
122 // readability to an unnamed module that p2.c2 is defined in.
123 public void test_strictModuleUnnamedReadableLayer() throws Throwable {
124
125 // Define module: m1x
126 // Can read: java.base
127 // Packages: p1
128 // Packages exported: p1 is exported unqualifiedly
129 ModuleDescriptor descriptor_m1x =
130 ModuleDescriptor.newModule("m1x")
131 .requires("java.base")
132 .exports("p1")
133 .build();
134
135 // Set up a ModuleFinder containing all modules for this layer.
136 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
137
138 // Resolves "m1x"
139 Configuration cf = ModuleLayer.boot()
140 .configuration()
141 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
142
143 MyDiffClassLoader.loader1 = new MyDiffClassLoader();
144 MyDiffClassLoader.loader2 = new MyDiffClassLoader();
145
146 // map module m1x to class loader.
147 // class c2 will be loaded in an unnamed module/loader2
148 // to achieve differing class loaders.
149 Map<String, ClassLoader> map = new HashMap<>();
150 map.put("m1x", MyDiffClassLoader.loader1);
151
152 // Create layer that contains m1x
153 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
154
155 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
156 assertTrue(layer.findLoader("java.base") == null);
157
158 // now use the same loader to load class p1.c1ReadEdgeDiffLoader
159 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1ReadEdgeDiffLoader");
160
161 try {
162 // Read edge between m1x and the unnamed module that loads p2.c2 is established in
163 // c1ReadEdgeDiffLoader's ctor before attempting access.
164 p1_c1_class.newInstance();
165 } catch (IllegalAccessError e) {
166 throw new RuntimeException("Test Failed, module m1x has established readability to p2/c2 loader's " +
167 "unnamed module, access should be allowed: " + e.getMessage());
168 }
169 }
170
171 // Module m1x is a loose module and thus can read all unnamed modules.
172 public void test_looseModuleLayer() throws Throwable {
173
174 // Define module: m1x
175 // Can read: java.base
176 // Packages: p1
177 // Packages exported: p1 is exported unqualifiedly
178 ModuleDescriptor descriptor_m1x =
179 ModuleDescriptor.newModule("m1x")
180 .requires("java.base")
181 .exports("p1")
182 .build();
183
184 // Set up a ModuleFinder containing all modules for this layer.
185 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
186
187 // Resolves "m1x"
188 Configuration cf = ModuleLayer.boot()
189 .configuration()
190 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
191
192 MyDiffClassLoader.loader1 = new MyDiffClassLoader();
193 MyDiffClassLoader.loader2 = new MyDiffClassLoader();
194
195 // map module m1x to class loader.
196 // class c2 will be loaded in an unnamed module/loader2
197 // to achieve differing class loaders.
198 Map<String, ClassLoader> map = new HashMap<>();
199 map.put("m1x", MyDiffClassLoader.loader1);
200
201 // Create layer that contains m1x
202 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
203
204 assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
205 assertTrue(layer.findLoader("java.base") == null);
206
207 // now use the same loader to load class p1.c1Loose
208 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1Loose");
209
210 // change m1x to read all unnamed modules
211 Module m1x = layer.findModule("m1x").get();
212 jdk.internal.module.Modules.addReadsAllUnnamed(m1x);
213
214 try {
215 p1_c1_class.newInstance();
216 } catch (IllegalAccessError e) {
217 throw new RuntimeException("Test Failed, loose module m1x should be able to access " +
218 "public type p2.c2 defined in unnamed module: " + e.getMessage());
219 }
220 }
221
222 public static void main(String args[]) throws Throwable {
223 DiffCL_Umod test = new DiffCL_Umod();
224 test.test_strictModuleLayer(); // access denied
225 test.test_strictModuleUnnamedReadableLayer(); // access allowed
226 test.test_looseModuleLayer(); // access allowed
227 }
228 }