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
|
/*
* Copyright (c) 2016, 2018, 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
* @summary class p3.c3 defined in module m1x tries to access c4 defined in an unnamed package
* and an unnamed module.
* @modules java.base/jdk.internal.misc
* @library /test/lib
* @compile myloaders/MyDiffClassLoader.java
* @compile c4.java
* @compile p3/c3.jcod
* @compile p3/c3ReadEdgeDiffLoader.jcod
* @run main/othervm -Xbootclasspath/a:. DiffCL_UmodUpkg
*/
import static jdk.test.lib.Asserts.*;
import java.lang.module.Configuration;
import java.lang.module.ModuleDescriptor;
import java.lang.module.ModuleFinder;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import myloaders.MyDiffClassLoader;
//
// ClassLoader1 --> defines m1x --> packages p3
// package p3 in m1x is exported unqualifiedly
//
// class p3.c3 defined in m1x tries to access c4 defined in
// in unnamed module.
//
// Two access attempts occur in this test:
// 1. The first access is not allowed because a strict module
// cannot read an unnamed module.
// 2. In this scenario a strict module establishes readability
// to the particular unnamed module it is trying to access.
// Access is allowed.
//
public class DiffCL_UmodUpkg {
// Create layers over the boot layer to test different
// accessing scenarios of a named module to an unnamed module.
// Module m1x is a strict module and has not established
// readability to an unnamed module that c4 is defined in.
public void test_strictModuleLayer() throws Throwable {
// Define module: m1x
// Can read: java.base
// Packages: p3
// Packages exported: p3 is exported unqualifiedly
ModuleDescriptor descriptor_m1x =
ModuleDescriptor.newModule("m1x")
.requires("java.base")
.exports("p3")
.build();
// Set up a ModuleFinder containing all modules for this layer.
ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
// Resolves "m1x"
Configuration cf = ModuleLayer.boot()
.configuration()
.resolve(finder, ModuleFinder.of(), Set.of("m1x"));
MyDiffClassLoader.loader1 = new MyDiffClassLoader();
MyDiffClassLoader.loader2 = new MyDiffClassLoader();
// map module m1x to class loader.
// class c2 will be loaded in an unnamed module/loader2
// to achieve differing class loaders.
Map<String, ClassLoader> map = new HashMap<>();
map.put("m1x", MyDiffClassLoader.loader1);
// Create layer that contains m1x
ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
assertTrue(layer.findLoader("java.base") == null);
// now use the same loader to load class p3.c3
Class p3_c3_class = MyDiffClassLoader.loader1.loadClass("p3.c3");
// Attempt access
try {
p3_c3_class.newInstance();
throw new RuntimeException("Test Failed, strict module m1x should not be able to access " +
"public type c4 defined in unnamed module");
} catch (IllegalAccessError e) {
}
}
// Module m1x is a strict module and has established
// readability to an unnamed module that c4 is defined in.
public void test_strictModuleUnnamedReadableLayer() throws Throwable {
// Define module: m1x
// Can read: java.base
// Packages: p3
// Packages exported: p3 is exported unqualifiedly
ModuleDescriptor descriptor_m1x =
ModuleDescriptor.newModule("m1x")
.requires("java.base")
.exports("p3")
.build();
// Set up a ModuleFinder containing all modules for this layer.
ModuleFinder finder = ModuleLibrary.of(descriptor_m1x);
// Resolves "m1x"
Configuration cf = ModuleLayer.boot()
.configuration()
.resolve(finder, ModuleFinder.of(), Set.of("m1x"));
MyDiffClassLoader.loader1 = new MyDiffClassLoader();
MyDiffClassLoader.loader2 = new MyDiffClassLoader();
// map module m1x to class loader.
// class c2 will be loaded in an unnamed module/loader2
// to achieve differing class loaders.
Map<String, ClassLoader> map = new HashMap<>();
map.put("m1x", MyDiffClassLoader.loader1);
// Create layer that contains m1x
ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
assertTrue(layer.findLoader("m1x") == MyDiffClassLoader.loader1);
assertTrue(layer.findLoader("java.base") == null);
// now use the same loader to load class p3.c3ReadEdgeDiffLoader
Class p3_c3_class = MyDiffClassLoader.loader1.loadClass("p3.c3ReadEdgeDiffLoader");
try {
// Read edge between m1x and the unnamed module that loads c4 is established in
// C3ReadEdgeDiffLoader's ctor before attempting access.
p3_c3_class.newInstance();
} catch (IllegalAccessError e) {
throw new RuntimeException("Test Failed, module m1x has established readability to " +
"c4 loader's unnamed module, access should be allowed: " + e.getMessage());
}
}
public static void main(String args[]) throws Throwable {
DiffCL_UmodUpkg test = new DiffCL_UmodUpkg();
test.test_strictModuleLayer(); // access denied
test.test_strictModuleUnnamedReadableLayer(); // access allowed
}
}
|
