1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4227192 8004928 8072656
* @summary This is a test of the restrictions on the parameters that may
* be passed to the Proxy.getProxyClass method.
* @author Peter Jones
*
* @build ClassRestrictions
* @run main ClassRestrictions
*/
import java.io.File;
import java.lang.reflect.Modifier;
import java.lang.reflect.Proxy;
import java.net.URLClassLoader;
import java.net.URL;
import java.nio.file.Paths;
public class ClassRestrictions {
public interface Bar {
int foo();
}
public interface Baz {
long foo();
}
interface Bashful {
void foo();
}
public static final String nonPublicIntrfaceName = "java.util.zip.ZipConstants";
public static void main(String[] args) {
System.err.println(
"\nTest of restrictions on parameters to Proxy.getProxyClass\n");
try {
ClassLoader loader = ClassRestrictions.class.getClassLoader();
Class<?>[] interfaces;
Class<?> proxyClass;
/*
* All of the Class objects in the interfaces array must represent
* interfaces, not classes or primitive types.
*/
try {
interfaces = new Class<?>[] { Object.class };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with java.lang.Object as interface");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
try {
interfaces = new Class<?>[] { Integer.TYPE };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with int.class as interface");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
/*
* No two elements in the interfaces array may refer to identical
* Class objects.
*/
try {
interfaces = new Class<?>[] { Bar.class, Bar.class };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with repeated interfaces");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
/*
* All of the interfaces types must be visible by name though the
* specified class loader.
*/
String[] cpaths = System.getProperty("test.classes", ".")
.split(File.pathSeparator);
URL[] urls = new URL[cpaths.length];
for (int i=0; i < cpaths.length; i++) {
urls[i] = Paths.get(cpaths[i]).toUri().toURL();
}
ClassLoader altLoader = new URLClassLoader(urls, null);
Class altBarClass;
altBarClass = Class.forName(Bar.class.getName(), false, altLoader);
try {
interfaces = new Class<?>[] { altBarClass };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with interface " +
"not visible to class loader");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
/*
* All non-public interfaces must be in the same package.
*/
Class<?> nonPublic1 = Bashful.class;
Class<?> nonPublic2 = Class.forName(nonPublicIntrfaceName);
if (Modifier.isPublic(nonPublic2.getModifiers())) {
throw new Error(
"Interface " + nonPublicIntrfaceName +
" is public and need to be changed!");
}
try {
interfaces = new Class<?>[] { nonPublic1, nonPublic2 };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with two non-public interfaces " +
"in different packages");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
/*
* No two interfaces may each have a method with the same name and
* parameter signature but different return type.
*/
try {
interfaces = new Class<?>[] { Bar.class, Baz.class };
proxyClass = Proxy.getProxyClass(loader, interfaces);
throw new Error(
"proxy class created with conflicting methods");
} catch (IllegalArgumentException e) {
e.printStackTrace();
System.err.println();
// assume exception is for intended failure
}
/*
* All components of this test have passed.
*/
System.err.println("\nTEST PASSED");
} catch (Throwable e) {
System.err.println("\nTEST FAILED:");
e.printStackTrace();
throw new Error("TEST FAILED: ", e);
}
}
}
|
