1 /*
2 * Copyright (c) 2002, 2016, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.misc;
27
28 import java.io.ObjectInputStream;
29 import java.util.jar.JarFile;
30 import java.io.Console;
31 import java.io.FileDescriptor;
32 import java.io.ObjectInputStream;
33 import java.security.ProtectionDomain;
34
35 import java.security.AccessController;
36
37 /** A repository of "shared secrets", which are a mechanism for
38 calling implementation-private methods in another package without
39 using reflection. A package-private class implements a public
40 interface and provides the ability to call package-private methods
41 within that package; the object implementing that interface is
42 provided through a third package to which access is restricted.
43 This framework avoids the primary disadvantage of using reflection
44 for this purpose, namely the loss of compile-time checking. */
45
46 public class SharedSecrets {
47 private static final Unsafe unsafe = Unsafe.getUnsafe();
48 private static JavaUtilJarAccess javaUtilJarAccess;
49 private static JavaLangAccess javaLangAccess;
50 private static JavaLangRefAccess javaLangRefAccess;
51 private static JavaIOAccess javaIOAccess;
52 private static JavaNetAccess javaNetAccess;
53 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
54 private static JavaNioAccess javaNioAccess;
55 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
56 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
57 private static JavaSecurityAccess javaSecurityAccess;
58 private static JavaUtilZipFileAccess javaUtilZipFileAccess;
59 private static JavaAWTAccess javaAWTAccess;
60 private static JavaOISAccess javaOISAccess;
61
62 public static JavaUtilJarAccess javaUtilJarAccess() {
63 if (javaUtilJarAccess == null) {
64 // Ensure JarFile is initialized; we know that that class
65 // provides the shared secret
66 unsafe.ensureClassInitialized(JarFile.class);
67 }
68 return javaUtilJarAccess;
69 }
70
71 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
72 javaUtilJarAccess = access;
73 }
74
75 public static void setJavaLangAccess(JavaLangAccess jla) {
76 javaLangAccess = jla;
77 }
78
79 public static JavaLangAccess getJavaLangAccess() {
80 return javaLangAccess;
81 }
82
83 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
84 javaLangRefAccess = jlra;
85 }
86
87 public static JavaLangRefAccess getJavaLangRefAccess() {
88 return javaLangRefAccess;
89 }
90
91 public static void setJavaNetAccess(JavaNetAccess jna) {
92 javaNetAccess = jna;
93 }
94
95 public static JavaNetAccess getJavaNetAccess() {
96 return javaNetAccess;
97 }
98
99 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
100 javaNetHttpCookieAccess = a;
101 }
102
103 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
104 if (javaNetHttpCookieAccess == null)
105 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
106 return javaNetHttpCookieAccess;
107 }
108
109 public static void setJavaNioAccess(JavaNioAccess jna) {
110 javaNioAccess = jna;
111 }
112
113 public static JavaNioAccess getJavaNioAccess() {
114 if (javaNioAccess == null) {
115 // Ensure java.nio.ByteOrder is initialized; we know that
116 // this class initializes java.nio.Bits that provides the
117 // shared secret.
118 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
119 }
120 return javaNioAccess;
121 }
122
123 public static void setJavaIOAccess(JavaIOAccess jia) {
124 javaIOAccess = jia;
125 }
126
127 public static JavaIOAccess getJavaIOAccess() {
128 if (javaIOAccess == null) {
129 unsafe.ensureClassInitialized(Console.class);
130 }
131 return javaIOAccess;
132 }
133
134 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
135 javaIOFileDescriptorAccess = jiofda;
136 }
137
138 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
139 if (javaIOFileDescriptorAccess == null)
140 unsafe.ensureClassInitialized(FileDescriptor.class);
141
142 return javaIOFileDescriptorAccess;
143 }
144
145 public static void setJavaOISAccess(JavaOISAccess access) {
146 javaOISAccess = access;
147 }
148
149 public static JavaOISAccess getJavaOISAccess() {
150 if (javaOISAccess == null)
151 unsafe.ensureClassInitialized(ObjectInputStream.class);
152
153 return javaOISAccess;
154 }
155
156
157 public static void setJavaSecurityProtectionDomainAccess
158 (JavaSecurityProtectionDomainAccess jspda) {
159 javaSecurityProtectionDomainAccess = jspda;
160 }
161
162 public static JavaSecurityProtectionDomainAccess
163 getJavaSecurityProtectionDomainAccess() {
164 if (javaSecurityProtectionDomainAccess == null)
165 unsafe.ensureClassInitialized(ProtectionDomain.class);
166 return javaSecurityProtectionDomainAccess;
167 }
168
169 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
170 javaSecurityAccess = jsa;
171 }
172
173 public static JavaSecurityAccess getJavaSecurityAccess() {
174 if (javaSecurityAccess == null) {
175 unsafe.ensureClassInitialized(AccessController.class);
176 }
177 return javaSecurityAccess;
178 }
179
180 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
181 if (javaUtilZipFileAccess == null)
182 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
183 return javaUtilZipFileAccess;
184 }
185
186 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
187 javaUtilZipFileAccess = access;
188 }
189
190 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
191 javaAWTAccess = jaa;
192 }
193
194 public static JavaAWTAccess getJavaAWTAccess() {
195 // this may return null in which case calling code needs to
196 // provision for.
197 if (javaAWTAccess == null) {
198 return null;
199 }
200 return javaAWTAccess;
201 }
202
203 }