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
|
/*
* Copyright (c) 2004, 2024, 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 4974913
* @summary Test that array classes can be found in signatures always
* and can be deserialized by the deprecated MBeanServer.deserialize method
* @author Eamonn McManus
*
* @run clean ArrayClassTest
* @run build ArrayClassTest
* @run main ArrayClassTest
*/
import java.io.*;
import java.lang.reflect.*;
import java.net.*;
import java.nio.file.Paths;
import javax.management.*;
import javax.management.loading.*;
public class ArrayClassTest {
public static void main(String[] args) throws Exception {
MBeanServer mbs = MBeanServerFactory.createMBeanServer();
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();
}
// Create a SpyLoader MBean that can load the same class names but
// will produce different results.
ClassLoader loader = new SpyLoader(urls);
ObjectName loaderName = new ObjectName("test:type=SpyLoader");
mbs.registerMBean(loader, loaderName);
ObjectName testName = new ObjectName("test:type=Test");
mbs.createMBean(Test.class.getName(), testName, loaderName,
new Object[1], new String[] {X[].class.getName()});
ClassLoader checkLoader = mbs.getClassLoaderFor(testName);
if (checkLoader != loader)
throw new AssertionError("Wrong loader: " + checkLoader);
mbs.invoke(testName, "ignore", new Object[1],
new String[] {Y[].class.getName()});
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream oout = new ObjectOutputStream(bout);
oout.writeObject(new Z[0]);
oout.close();
byte[] bytes = bout.toByteArray();
ObjectInputStream oin = mbs.deserialize(testName, bytes);
Object zarray = oin.readObject();
String failed = null;
if (zarray instanceof Z[])
failed = "read back a real Z[]";
else if (!zarray.getClass().getName().equals(Z[].class.getName())) {
failed = "returned object of wrong type: " +
zarray.getClass().getName();
} else if (Array.getLength(zarray) != 0)
failed = "returned array of wrong size: " + Array.getLength(zarray);
if (failed != null) {
System.out.println("TEST FAILED: " + failed);
System.exit(1);
}
System.out.println("Test passed");
}
public static interface TestMBean {
public void ignore(Y[] ignored);
}
public static class Test implements TestMBean {
public Test(X[] ignored) {}
public void ignore(Y[] ignored) {}
}
public static class X {}
public static class Y {}
public static class Z implements Serializable {}
public static interface SpyLoaderMBean {}
public static class SpyLoader extends URLClassLoader
implements SpyLoaderMBean, PrivateClassLoader {
public SpyLoader(URL[] urls) {
// important that the parent classloader be null!
// otherwise we can pick up classes from the classpath
super(urls, null);
}
public Class findClass(String name) throws ClassNotFoundException {
System.out.println("findClass: " + name);
if (false)
new Throwable().printStackTrace(System.out);
Class c = super.findClass(name);
System.out.println(" -> " + name + " (" + c.getClassLoader() + ")");
return c;
}
}
}
|
