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 private static JavaObjectInputStreamAccess javaObjectInputStreamAccess;
62
63 public static JavaUtilJarAccess javaUtilJarAccess() {
64 if (javaUtilJarAccess == null) {
65 // Ensure JarFile is initialized; we know that that class
66 // provides the shared secret
67 unsafe.ensureClassInitialized(JarFile.class);
68 }
69 return javaUtilJarAccess;
70 }
71
72 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
73 javaUtilJarAccess = access;
74 }
75
76 public static void setJavaLangAccess(JavaLangAccess jla) {
77 javaLangAccess = jla;
78 }
79
80 public static JavaLangAccess getJavaLangAccess() {
81 return javaLangAccess;
82 }
83
84 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
85 javaLangRefAccess = jlra;
86 }
87
88 public static JavaLangRefAccess getJavaLangRefAccess() {
89 return javaLangRefAccess;
90 }
91
92 public static void setJavaNetAccess(JavaNetAccess jna) {
93 javaNetAccess = jna;
94 }
95
96 public static JavaNetAccess getJavaNetAccess() {
97 return javaNetAccess;
98 }
99
100 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
101 javaNetHttpCookieAccess = a;
102 }
103
104 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
105 if (javaNetHttpCookieAccess == null)
106 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
107 return javaNetHttpCookieAccess;
108 }
109
110 public static void setJavaNioAccess(JavaNioAccess jna) {
111 javaNioAccess = jna;
112 }
113
114 public static JavaNioAccess getJavaNioAccess() {
115 if (javaNioAccess == null) {
116 // Ensure java.nio.ByteOrder is initialized; we know that
117 // this class initializes java.nio.Bits that provides the
118 // shared secret.
119 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
120 }
121 return javaNioAccess;
122 }
123
124 public static void setJavaIOAccess(JavaIOAccess jia) {
125 javaIOAccess = jia;
126 }
127
128 public static JavaIOAccess getJavaIOAccess() {
129 if (javaIOAccess == null) {
130 unsafe.ensureClassInitialized(Console.class);
131 }
132 return javaIOAccess;
133 }
134
135 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
136 javaIOFileDescriptorAccess = jiofda;
137 }
138
139 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
140 if (javaIOFileDescriptorAccess == null)
141 unsafe.ensureClassInitialized(FileDescriptor.class);
142
143 return javaIOFileDescriptorAccess;
144 }
145
146 public static void setJavaOISAccess(JavaOISAccess access) {
147 javaOISAccess = access;
148 }
149
150 public static JavaOISAccess getJavaOISAccess() {
151 if (javaOISAccess == null)
152 unsafe.ensureClassInitialized(ObjectInputStream.class);
153
154 return javaOISAccess;
155 }
156
157
158 public static void setJavaSecurityProtectionDomainAccess
159 (JavaSecurityProtectionDomainAccess jspda) {
160 javaSecurityProtectionDomainAccess = jspda;
161 }
162
163 public static JavaSecurityProtectionDomainAccess
164 getJavaSecurityProtectionDomainAccess() {
165 if (javaSecurityProtectionDomainAccess == null)
166 unsafe.ensureClassInitialized(ProtectionDomain.class);
167 return javaSecurityProtectionDomainAccess;
168 }
169
170 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
171 javaSecurityAccess = jsa;
172 }
173
174 public static JavaSecurityAccess getJavaSecurityAccess() {
175 if (javaSecurityAccess == null) {
176 unsafe.ensureClassInitialized(AccessController.class);
177 }
178 return javaSecurityAccess;
179 }
180
181 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
182 if (javaUtilZipFileAccess == null)
183 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
184 return javaUtilZipFileAccess;
185 }
186
187 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
188 javaUtilZipFileAccess = access;
189 }
190
191 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
192 javaAWTAccess = jaa;
193 }
194
195 public static JavaAWTAccess getJavaAWTAccess() {
196 // this may return null in which case calling code needs to
197 // provision for.
198 if (javaAWTAccess == null) {
199 return null;
200 }
201 return javaAWTAccess;
202 }
203
204 public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() {
205 if (javaObjectInputStreamAccess == null) {
206 unsafe.ensureClassInitialized(ObjectInputStream.class);
207 }
208 return javaObjectInputStreamAccess;
209 }
210
211 public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) {
212 javaObjectInputStreamAccess = access;
213 }
214 }