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 8004928
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.Modifier;
35 import java.lang.reflect.Proxy;
36 import java.net.URLClassLoader;
37
38 public class ClassRestrictions {
39
40 public interface Bar {
41 int foo();
42 }
43
44 public interface Baz {
45 long foo();
46 }
47
48 interface Bashful {
49 void foo();
50 }
51
52 public static final String nonPublicIntrfaceName = "java.util.zip.ZipConstants";
53
54 public static void main(String[] args) {
55
56 System.err.println(
57 "\nTest of restrictions on parameters to Proxy.getProxyClass\n");
58
59 try {
60 ClassLoader loader = ClassRestrictions.class.getClassLoader();
61 Class<?>[] interfaces;
62 Class<?> proxyClass;
63
64 /*
65 * All of the Class objects in the interfaces array must represent
66 * interfaces, not classes or primitive types.
67 */
68 try {
69 interfaces = new Class<?>[] { Object.class };
70 proxyClass = Proxy.getProxyClass(loader, interfaces);
71 throw new Error(
72 "proxy class created with java.lang.Object as interface");
73 } catch (IllegalArgumentException e) {
74 e.printStackTrace();
75 System.err.println();
76 // assume exception is for intended failure
77 }
78 try {
79 interfaces = new Class<?>[] { Integer.TYPE };
80 proxyClass = Proxy.getProxyClass(loader, interfaces);
81 throw new Error(
82 "proxy class created with int.class as interface");
83 } catch (IllegalArgumentException e) {
84 e.printStackTrace();
85 System.err.println();
86 // assume exception is for intended failure
87 }
88
89 /*
90 * No two elements in the interfaces array may refer to identical
91 * Class objects.
92 */
93 try {
94 interfaces = new Class<?>[] { Bar.class, Bar.class };
95 proxyClass = Proxy.getProxyClass(loader, interfaces);
96 throw new Error(
97 "proxy class created with repeated interfaces");
98 } catch (IllegalArgumentException e) {
99 e.printStackTrace();
100 System.err.println();
101 // assume exception is for intended failure
102 }
103
104 /*
105 * All of the interfaces types must be visible by name though the
106 * specified class loader.
107 */
108 ClassLoader altLoader = new URLClassLoader(
109 ((URLClassLoader) loader).getURLs(), null);
110 Class altBarClass;
111 altBarClass = Class.forName(Bar.class.getName(), false, altLoader);
112 try {
113 interfaces = new Class<?>[] { altBarClass };
114 proxyClass = Proxy.getProxyClass(loader, interfaces);
115 throw new Error(
116 "proxy class created with interface " +
117 "not visible to class loader");
118 } catch (IllegalArgumentException e) {
119 e.printStackTrace();
120 System.err.println();
121 // assume exception is for intended failure
122 }
123
124 /*
125 * All non-public interfaces must be in the same package.
126 */
127 Class<?> nonPublic1 = Bashful.class;
128 Class<?> nonPublic2 = Class.forName(nonPublicIntrfaceName);
129 if (Modifier.isPublic(nonPublic2.getModifiers())) {
130 throw new Error(
131 "Interface " + nonPublicIntrfaceName +
132 " is public and need to be changed!");
133 }
134 try {
135 interfaces = new Class<?>[] { nonPublic1, nonPublic2 };
136 proxyClass = Proxy.getProxyClass(loader, interfaces);
137 throw new Error(
138 "proxy class created with two non-public interfaces " +
139 "in different packages");
140 } catch (IllegalArgumentException e) {
141 e.printStackTrace();
142 System.err.println();
143 // assume exception is for intended failure
144 }
145
146 /*
147 * No two interfaces may each have a method with the same name and
148 * parameter signature but different return type.
149 */
150 try {
151 interfaces = new Class<?>[] { Bar.class, Baz.class };
152 proxyClass = Proxy.getProxyClass(loader, interfaces);
153 throw new Error(
154 "proxy class created with conflicting methods");
155 } catch (IllegalArgumentException e) {
156 e.printStackTrace();
157 System.err.println();
158 // assume exception is for intended failure
159 }
160
161 /*
162 * All components of this test have passed.
163 */
164 System.err.println("\nTEST PASSED");
165
166 } catch (Throwable e) {
167 System.err.println("\nTEST FAILED:");
168 e.printStackTrace();
169 throw new Error("TEST FAILED: ", e);
170 }
171 }
172 }