1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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
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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).
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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/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.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.MySameClassLoader;
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 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 // map module m1x to class loader.
95 // class c2 will be loaded in an unnamed module/loader.
96 MySameClassLoader loader = new MySameClassLoader();
97 Map<String, ClassLoader> map = new HashMap<>();
98 map.put("m1x", loader);
99
100 // Create layer that contains m1x
101 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
102
103 assertTrue(layer.findLoader("m1x") == loader);
104 assertTrue(layer.findLoader("java.base") == null);
105
106 // now use the same loader to load class p1.c1
107 Class p1_c1_class = loader.loadClass("p1.c1");
108
109 // Attempt access
110 try {
111 p1_c1_class.newInstance();
112 throw new RuntimeException("Test Failed, strict module m1x, type p1.c1, should not be able " +
113 "to access public type p2.c2 defined in unnamed module");
114 } catch (IllegalAccessError e) {
115 }
116 }
117
118 // Module m1x is a strict module and has established
119 // readability to an unnamed module that p2.c2 is defined in.
120 public void test_strictModuleUnnamedReadableLayer() throws Throwable {
121
122 // Define module: m1x
123 // Can read: java.base
124 // Packages: p1
125 // Packages exported: p1 is exported unqualifiedly
126 ModuleDescriptor descriptor_m1x =
127 ModuleDescriptor.newModule("m1x")
128 .requires("java.base")
129 .exports("p1")
130 .build();
131
132 // Set up a ModuleFinder containing all modules for this layer.
133 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
134
135 // Resolves "m1x"
136 Configuration cf = ModuleLayer.boot()
137 .configuration()
138 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
139
140 MySameClassLoader loader = new MySameClassLoader();
141 // map module m1x to class loader.
142 // class c2 will be loaded in an unnamed module/loader.
143 Map<String, ClassLoader> map = new HashMap<>();
144 map.put("m1x", loader);
145
146 // Create layer that contains m1x
147 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
148
149 assertTrue(layer.findLoader("m1x") == loader);
150 assertTrue(layer.findLoader("java.base") == null);
151
152 // now use the same loader to load class p1.c1ReadEdge
153 Class p1_c1_class = loader.loadClass("p1.c1ReadEdge");
154
155 try {
156 // Read edge between m1x and the unnamed module that loads p2.c2 is established in
157 // c1ReadEdge's ctor before attempting access.
158 p1_c1_class.newInstance();
159 } catch (IllegalAccessError e) {
160 throw new RuntimeException("Test Failed, strict module m1x, type p1.c1ReadEdge, should be able to acccess public type " +
161 "p2.c2 defined in unnamed module: " + e.getMessage());
162 }
163 }
164
165 // Module m1x is a loose module and thus can read all unnamed modules.
166 public void test_looseModuleLayer() throws Throwable {
167
168 // Define module: m1x
169 // Can read: java.base
170 // Packages: p1
171 // Packages exported: p1 is exported unqualifiedly
172 ModuleDescriptor descriptor_m1x =
173 ModuleDescriptor.newModule("m1x")
174 .requires("java.base")
175 .exports("p1")
176 .build();
177
178 // Set up a ModuleFinder containing all modules for this layer.
179 ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
180
181 // Resolves "m1x"
182 Configuration cf = ModuleLayer.boot()
183 .configuration()
184 .resolve(finder, ModuleFinder.of(), Set.of("m1x"));
185
186 MySameClassLoader loader = new MySameClassLoader();
187 // map module m1x to class loader.
188 // class c2 will be loaded in an unnamed module/loader.
189 Map<String, ClassLoader> map = new HashMap<>();
190 map.put("m1x", loader);
191
192 // Create layer that contains m1x
193 ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
194
195 assertTrue(layer.findLoader("m1x") == loader);
196 assertTrue(layer.findLoader("java.base") == null);
197
198 // now use the same loader to load class p1.c1Loose
199 Class p1_c1_class = loader.loadClass("p1.c1Loose");
200
201 // change m1x to read all unnamed modules
202 Module m1x = layer.findModule("m1x").get();
203 jdk.internal.module.Modules.addReadsAllUnnamed(m1x);
204
205 try {
206 p1_c1_class.newInstance();
207 } catch (IllegalAccessError e) {
208 throw new RuntimeException("Test Failed, strict module m1x, type p1.c1Loose, should be able to acccess public type " +
209 "p2.c2 defined in unnamed module: " + e.getMessage());
210 }
211 }
212
213 public static void main(String args[]) throws Throwable {
214 Umod test = new Umod();
215 test.test_strictModuleLayer(); // access denied
216 test.test_strictModuleUnnamedReadableLayer(); // access allowed
217 test.test_looseModuleLayer(); // access allowed
218 }
219 }