1 /*
2 * Copyright (c) 1999, 2010, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 4227192
26 * @summary This is a test of the restrictions on the parameters that may
27 * be passed to the Proxy.getProxyClass method.
28 * @author Peter Jones
29 *
30 * @build ClassRestrictions
31 * @run main ClassRestrictions
32 */
33
34 import java.lang.reflect.Proxy;
35 import java.net.URLClassLoader;
36
37 public class ClassRestrictions {
38
39 public interface Bar {
40 int foo();
41 }
42
43 public interface Baz {
44 long foo();
45 }
46
47 interface Bashful {
48 void foo();
49 }
50
51 public static void main(String[] args) {
52
53 System.err.println(
54 "\nTest of restrictions on parameters to Proxy.getProxyClass\n");
55
56 try {
57 ClassLoader loader = ClassRestrictions.class.getClassLoader();
58 Class<?>[] interfaces;
59 Class<?> proxyClass;
60
61 /*
62 * All of the Class objects in the interfaces array must represent
63 * interfaces, not classes or primitive types.
64 */
65 try {
66 interfaces = new Class<?>[] { Object.class };
67 proxyClass = Proxy.getProxyClass(loader, interfaces);
68 throw new RuntimeException(
69 "proxy class created with java.lang.Object as interface");
70 } catch (IllegalArgumentException e) {
71 e.printStackTrace();
72 System.err.println();
73 // assume exception is for intended failure
74 }
75 try {
76 interfaces = new Class<?>[] { Integer.TYPE };
77 proxyClass = Proxy.getProxyClass(loader, interfaces);
78 throw new RuntimeException(
79 "proxy class created with int.class as interface");
80 } catch (IllegalArgumentException e) {
81 e.printStackTrace();
82 System.err.println();
83 // assume exception is for intended failure
84 }
85
86 /*
87 * No two elements in the interfaces array may refer to identical
88 * Class objects.
89 */
90 try {
91 interfaces = new Class<?>[] { Bar.class, Bar.class };
92 proxyClass = Proxy.getProxyClass(loader, interfaces);
93 throw new RuntimeException(
94 "proxy class created with repeated interfaces");
95 } catch (IllegalArgumentException e) {
96 e.printStackTrace();
97 System.err.println();
98 // assume exception is for intended failure
99 }
100
101 /*
102 * All of the interfaces types must be visible by name though the
103 * specified class loader.
104 */
105 ClassLoader altLoader = new URLClassLoader(
106 ((URLClassLoader) loader).getURLs(), null);
107 Class altBarClass;
108 altBarClass = Class.forName(Bar.class.getName(), false, altLoader);
109 try {
110 interfaces = new Class<?>[] { altBarClass };
111 proxyClass = Proxy.getProxyClass(loader, interfaces);
112 throw new RuntimeException(
113 "proxy class created with interface " +
114 "not visible to class loader");
115 } catch (IllegalArgumentException e) {
116 e.printStackTrace();
117 System.err.println();
118 // assume exception is for intended failure
119 }
120
121 /*
122 * All non-public interfaces must be in the same package.
123 */
124 Class<?> nonPublic1 = Bashful.class;
125 Class<?> nonPublic2 = null;
126 String[] nonPublicInterfaces = new String[] {
127 "java.awt.Conditional",
128 "java.util.zip.ZipConstants",
129 "javax.swing.GraphicsWrapper",
130 "javax.swing.JPopupMenu$Popup",
131 "javax.swing.JTable$Resizable2",
132 "javax.swing.JTable$Resizable3",
133 "javax.swing.ToolTipManager$Popup",
134 "sun.audio.Format",
135 "sun.audio.HaePlayable",
136 "sun.tools.agent.StepConstants",
137 };
138 for (int i = 0; i < nonPublicInterfaces.length; i++) {
139 try {
140 nonPublic2 = Class.forName(nonPublicInterfaces[i]);
141 break;
142 } catch (ClassNotFoundException e) {
143 }
144 }
145 if (nonPublic2 == null) {
146 throw new RuntimeException(
147 "no second non-public interface found for test");
148 }
149 try {
150 interfaces = new Class<?>[] { nonPublic1, nonPublic2 };
151 proxyClass = Proxy.getProxyClass(loader, interfaces);
152 throw new RuntimeException(
153 "proxy class created with two non-public interfaces " +
154 "in different packages");
155 } catch (IllegalArgumentException e) {
156 e.printStackTrace();
157 System.err.println();
158 // assume exception is for intended failure
159 }
160
161 /*
162 * No two interfaces may each have a method with the same name and
163 * parameter signature but different return type.
164 */
165 try {
166 interfaces = new Class<?>[] { Bar.class, Baz.class };
167 proxyClass = Proxy.getProxyClass(loader, interfaces);
168 throw new RuntimeException(
169 "proxy class created with conflicting methods");
170 } catch (IllegalArgumentException e) {
171 e.printStackTrace();
172 System.err.println();
173 // assume exception is for intended failure
174 }
175
176 /*
177 * All components of this test have passed.
178 */
179 System.err.println("\nTEST PASSED");
180
181 } catch (Exception e) {
182 System.err.println("\nTEST FAILED:");
183 e.printStackTrace();
184 throw new RuntimeException("TEST FAILED: " + e.toString());
185 }
186 }
187 }