1 /*
2 * Copyright (c) 2017, 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 /*
25 * @test
26 * @bug 8046171
27 * @summary Test access to private methods between nestmates where there
28 * is an inheritance hierarchy and we invoke private methods that
29 * exist in specific classes in the hierarchy.
30 * @run main TestReflectionHierarchy
31 * @run main/othervm -Dsun.reflect.noInflation=true TestReflectionHierarchy
32 */
33
34 // The first run will use NativeMethodAccessor and due to the limited number
35 // of calls we will not reach the inflation threshold.
36 // The second run disables inflation so we will use the GeneratedMethodAccessor
37 // instead. In this way both sets of Reflection classes are tested.
38
39
40 public class TestReflectionHierarchy {
41
42 static class NestedA extends ExternalSuper {
43 static final String ID = "NestedA::priv_invoke";
44 private String priv_invoke() {
45 return ID;
46 }
47 static void checkA(NestedA a) throws Throwable {
48 verifyEquals((String)NestedA.class.
49 getDeclaredMethod("priv_invoke",
50 new Class<?>[0]).
51 invoke(a, new Object[0]),
52 NestedA.ID);
53 }
54 }
55
56 static class NestedB extends NestedA {
57 static final String ID = "NestedB::priv_invoke";
58 private String priv_invoke() {
59 return ID;
60 }
61 static void checkA(NestedA a) throws Throwable {
62 verifyEquals((String)NestedA.class.
63 getDeclaredMethod("priv_invoke",
64 new Class<?>[0]).
65 invoke(a, new Object[0]),
66 NestedA.ID);
67 }
68 }
69
70 static class NestedC extends NestedB {
71 static final String ID = "NestedC::priv_invoke";
72 private String priv_invoke() {
73 return ID;
74 }
75 static void checkA(NestedA a) throws Throwable {
76 verifyEquals((String)NestedA.class.
77 getDeclaredMethod("priv_invoke",
78 new Class<?>[0]).
79 invoke(a, new Object[0]),
80 NestedA.ID);
81 }
82 }
83
84 static void checkA(NestedA a) throws Throwable {
85 verifyEquals((String)NestedA.class.
86 getDeclaredMethod("priv_invoke",
87 new Class<?>[0]).
88 invoke(a, new Object[0]),
89 NestedA.ID);
90 }
91
92 static void checkB(NestedB b) throws Throwable {
93 verifyEquals((String)NestedB.class.
94 getDeclaredMethod("priv_invoke",
95 new Class<?>[0]).
96 invoke(b, new Object[0]),
97 NestedB.ID);
98 }
99
100 static void checkC(NestedC c) throws Throwable {
101 verifyEquals((String)NestedC.class.
102 getDeclaredMethod("priv_invoke",
103 new Class<?>[0]).
104 invoke(c, new Object[0]),
105 NestedC.ID);
106 }
107
108
109 // Access to private members of classes outside the nest is
110 // not permitted. These tests should throw IllegalAccessException
111 // at runtime.
112
113 static void checkExternalSuper(ExternalSuper s) throws Throwable {
114 try {
115 ExternalSuper.class.
116 getDeclaredMethod("priv_invoke", new Class<?>[0]).
117 invoke(s, new Object[0]);
118 throw new Error("Unexpected access to ExternalSuper.priv_invoke");
119 }
120 catch (IllegalAccessException iae) {
121 System.out.println("Got expected exception accessing ExternalSuper.priv_invoke:" + iae);
122 }
123 }
124
125 static void checkExternalSub(ExternalSub s) throws Throwable {
126 try {
127 ExternalSub.class.
128 getDeclaredMethod("priv_invoke", new Class<?>[0]).
129 invoke(s, new Object[0]);
130 throw new Error("Unexpected access to ExternalSub.priv_invoke");
131 }
132 catch (IllegalAccessException iae) {
133 System.out.println("Got expected exception accessing ExternalSub.priv_invoke:" + iae);
134 }
135 }
136
137 static void verifyEquals(String actual, String expected) {
138 if (!actual.equals(expected)) {
139 throw new Error("Expected " + expected + " but got " + actual);
140 }
141 System.out.println("Check passed for " + expected);
142 }
143
144 public static void main(String[] args) throws Throwable {
145 NestedA a = new NestedA();
146 NestedB b = new NestedB();
147 NestedC c = new NestedC();
148 ExternalSub sub = new ExternalSub();
149 ExternalSuper sup = new ExternalSuper();
150
151 checkExternalSuper(sup);
152 checkExternalSuper(a);
153 checkExternalSuper(b);
154 checkExternalSuper(c);
155 checkExternalSuper(sub);
156
157 checkA(a);
158 checkA(b);
159 checkA(c);
160 checkA(sub);
161
162 NestedA.checkA(a);
163 NestedA.checkA(b);
164 NestedA.checkA(c);
165 NestedA.checkA(sub);
166
167 NestedB.checkA(a);
168 NestedB.checkA(b);
169 NestedB.checkA(c);
170 NestedB.checkA(sub);
171
172 NestedC.checkA(a);
173 NestedC.checkA(b);
174 NestedC.checkA(c);
175 NestedC.checkA(sub);
176
177 checkB(b);
178 checkB(c);
179 checkB(sub);
180
181 checkC(c);
182 checkC(sub);
183
184 checkExternalSub(sub);
185 }
186 }
187
188 // Classes that are not part of the nest.
189 // Being non-public allows us to declare them in this file.
190
191 class ExternalSuper {
192 static final String ID = "ExternalSuper::priv_invoke";
193 private String priv_invoke() {
194 return ID;
195 }
196 }
197
198
199 class ExternalSub extends TestReflectionHierarchy.NestedC {
200 static final String ID = "ExternalSub::priv_invoke";
201 private String priv_invoke() {
202 return ID;
203 }
204 }