1 /*
2 * Copyright (c) 2002, 2014, 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.util.jar.JarFile;
29 import java.io.Console;
30 import java.io.FileDescriptor;
31 import java.security.ProtectionDomain;
32
33 import java.security.AccessController;
34
35 /** A repository of "shared secrets", which are a mechanism for
36 calling implementation-private methods in another package without
37 using reflection. A package-private class implements a public
38 interface and provides the ability to call package-private methods
39 within that package; the object implementing that interface is
40 provided through a third package to which access is restricted.
41 This framework avoids the primary disadvantage of using reflection
42 for this purpose, namely the loss of compile-time checking. */
43
44 public class SharedSecrets {
45 private static final Unsafe unsafe = Unsafe.getUnsafe();
46 private static JavaUtilJarAccess javaUtilJarAccess;
47 private static JavaLangAccess javaLangAccess;
48 private static JavaLangRefAccess javaLangRefAccess;
49 private static JavaIOAccess javaIOAccess;
50 private static JavaNetAccess javaNetAccess;
51 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
52 private static JavaNioAccess javaNioAccess;
53 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
54 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
55 private static JavaSecurityAccess javaSecurityAccess;
56 private static JavaUtilZipFileAccess javaUtilZipFileAccess;
57 private static JavaAWTAccess javaAWTAccess;
58 private static JavaAWTFontAccess javaAWTFontAccess;
59 private static JavaBeansIntrospectorAccess javaBeansIntrospectorAccess;
60
61 public static JavaUtilJarAccess javaUtilJarAccess() {
62 if (javaUtilJarAccess == null) {
63 // Ensure JarFile is initialized; we know that that class
64 // provides the shared secret
65 unsafe.ensureClassInitialized(JarFile.class);
66 }
67 return javaUtilJarAccess;
68 }
69
70 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
71 javaUtilJarAccess = access;
72 }
73
74 public static void setJavaLangAccess(JavaLangAccess jla) {
75 javaLangAccess = jla;
76 }
77
78 public static JavaLangAccess getJavaLangAccess() {
79 return javaLangAccess;
80 }
81
82 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
83 javaLangRefAccess = jlra;
84 }
85
86 public static JavaLangRefAccess getJavaLangRefAccess() {
87 return javaLangRefAccess;
88 }
89
90 public static void setJavaNetAccess(JavaNetAccess jna) {
91 javaNetAccess = jna;
92 }
93
94 public static JavaNetAccess getJavaNetAccess() {
95 return javaNetAccess;
96 }
97
98 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
99 javaNetHttpCookieAccess = a;
100 }
101
102 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
103 if (javaNetHttpCookieAccess == null)
104 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
105 return javaNetHttpCookieAccess;
106 }
107
108 public static void setJavaNioAccess(JavaNioAccess jna) {
109 javaNioAccess = jna;
110 }
111
112 public static JavaNioAccess getJavaNioAccess() {
113 if (javaNioAccess == null) {
114 // Ensure java.nio.ByteOrder is initialized; we know that
115 // this class initializes java.nio.Bits that provides the
116 // shared secret.
117 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
118 }
119 return javaNioAccess;
120 }
121
122 public static void setJavaIOAccess(JavaIOAccess jia) {
123 javaIOAccess = jia;
124 }
125
126 public static JavaIOAccess getJavaIOAccess() {
127 if (javaIOAccess == null) {
128 unsafe.ensureClassInitialized(Console.class);
129 }
130 return javaIOAccess;
131 }
132
133 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
134 javaIOFileDescriptorAccess = jiofda;
135 }
136
137 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
138 if (javaIOFileDescriptorAccess == null)
139 unsafe.ensureClassInitialized(FileDescriptor.class);
140
141 return javaIOFileDescriptorAccess;
142 }
143
144 public static void setJavaSecurityProtectionDomainAccess
145 (JavaSecurityProtectionDomainAccess jspda) {
146 javaSecurityProtectionDomainAccess = jspda;
147 }
148
149 public static JavaSecurityProtectionDomainAccess
150 getJavaSecurityProtectionDomainAccess() {
151 if (javaSecurityProtectionDomainAccess == null)
152 unsafe.ensureClassInitialized(ProtectionDomain.class);
153 return javaSecurityProtectionDomainAccess;
154 }
155
156 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
157 javaSecurityAccess = jsa;
158 }
159
160 public static JavaSecurityAccess getJavaSecurityAccess() {
161 if (javaSecurityAccess == null) {
162 unsafe.ensureClassInitialized(AccessController.class);
163 }
164 return javaSecurityAccess;
165 }
166
167 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
168 if (javaUtilZipFileAccess == null)
169 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
170 return javaUtilZipFileAccess;
171 }
172
173 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
174 javaUtilZipFileAccess = access;
175 }
176
177 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
178 javaAWTAccess = jaa;
179 }
180
181 public static JavaAWTAccess getJavaAWTAccess() {
182 // this may return null in which case calling code needs to
183 // provision for.
184 return javaAWTAccess;
185 }
186
187 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
188 javaAWTFontAccess = jafa;
189 }
190
191 public static JavaAWTFontAccess getJavaAWTFontAccess() {
192 // this may return null in which case calling code needs to
193 // provision for.
194 return javaAWTFontAccess;
195 }
196
197 public static JavaBeansIntrospectorAccess getJavaBeansIntrospectorAccess() {
198 return javaBeansIntrospectorAccess;
199 }
200
201 public static void setJavaBeansIntrospectorAccess(JavaBeansIntrospectorAccess access) {
202 javaBeansIntrospectorAccess = access;
203 }
204 }