1 /*
2 * Copyright (c) 2002, 2015, 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 jdk.internal.misc;
27
28 import java.util.jar.JarFile;
29 import java.io.Console;
30 import java.io.FileDescriptor;
31 import java.security.ProtectionDomain;
32 import java.security.AccessController;
33 import jdk.internal.misc.Unsafe;
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 JavaLangInvokeAccess javaLangInvokeAccess;
49 private static JavaLangRefAccess javaLangRefAccess;
50 private static JavaIOAccess javaIOAccess;
51 private static JavaNetAccess javaNetAccess;
52 private static JavaNetInetAddressAccess javaNetInetAddressAccess;
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 JavaAWTFontAccess javaAWTFontAccess;
61 private static JavaBeansAccess javaBeansAccess;
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 setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
85 javaLangInvokeAccess = jlia;
86 }
87
88 public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
89 if (javaLangInvokeAccess == null) {
90 try {
91 Class<?> c = Class.forName("java.lang.invoke.MemberName");
92 unsafe.ensureClassInitialized(c);
93 } catch (ClassNotFoundException e) {};
94 }
95 return javaLangInvokeAccess;
96 }
97
98 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
99 javaLangRefAccess = jlra;
100 }
101
102 public static JavaLangRefAccess getJavaLangRefAccess() {
103 return javaLangRefAccess;
104 }
105
106 public static void setJavaNetAccess(JavaNetAccess jna) {
107 javaNetAccess = jna;
108 }
109
110 public static JavaNetAccess getJavaNetAccess() {
111 if (javaNetAccess == null)
112 unsafe.ensureClassInitialized(java.net.URLClassLoader.class);
113 return javaNetAccess;
114 }
115
116 public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
117 javaNetInetAddressAccess = jna;
118 }
119
120 public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
121 return javaNetInetAddressAccess;
122 }
123
124 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
125 javaNetHttpCookieAccess = a;
126 }
127
128 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
129 if (javaNetHttpCookieAccess == null)
130 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
131 return javaNetHttpCookieAccess;
132 }
133
134 public static void setJavaNioAccess(JavaNioAccess jna) {
135 javaNioAccess = jna;
136 }
137
138 public static JavaNioAccess getJavaNioAccess() {
139 if (javaNioAccess == null) {
140 // Ensure java.nio.ByteOrder is initialized; we know that
141 // this class initializes java.nio.Bits that provides the
142 // shared secret.
143 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
144 }
145 return javaNioAccess;
146 }
147
148 public static void setJavaIOAccess(JavaIOAccess jia) {
149 javaIOAccess = jia;
150 }
151
152 public static JavaIOAccess getJavaIOAccess() {
153 if (javaIOAccess == null) {
154 unsafe.ensureClassInitialized(Console.class);
155 }
156 return javaIOAccess;
157 }
158
159 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
160 javaIOFileDescriptorAccess = jiofda;
161 }
162
163 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
164 if (javaIOFileDescriptorAccess == null)
165 unsafe.ensureClassInitialized(FileDescriptor.class);
166
167 return javaIOFileDescriptorAccess;
168 }
169
170 public static void setJavaSecurityProtectionDomainAccess
171 (JavaSecurityProtectionDomainAccess jspda) {
172 javaSecurityProtectionDomainAccess = jspda;
173 }
174
175 public static JavaSecurityProtectionDomainAccess
176 getJavaSecurityProtectionDomainAccess() {
177 if (javaSecurityProtectionDomainAccess == null)
178 unsafe.ensureClassInitialized(ProtectionDomain.class);
179 return javaSecurityProtectionDomainAccess;
180 }
181
182 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
183 javaSecurityAccess = jsa;
184 }
185
186 public static JavaSecurityAccess getJavaSecurityAccess() {
187 if (javaSecurityAccess == null) {
188 unsafe.ensureClassInitialized(AccessController.class);
189 }
190 return javaSecurityAccess;
191 }
192
193 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
194 if (javaUtilZipFileAccess == null)
195 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
196 return javaUtilZipFileAccess;
197 }
198
199 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
200 javaUtilZipFileAccess = access;
201 }
202
203 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
204 javaAWTAccess = jaa;
205 }
206
207 public static JavaAWTAccess getJavaAWTAccess() {
208 // this may return null in which case calling code needs to
209 // provision for.
210 return javaAWTAccess;
211 }
212
213 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
214 javaAWTFontAccess = jafa;
215 }
216
217 public static JavaAWTFontAccess getJavaAWTFontAccess() {
218 // this may return null in which case calling code needs to
219 // provision for.
220 return javaAWTFontAccess;
221 }
222
223 public static JavaBeansAccess getJavaBeansAccess() {
224 return javaBeansAccess;
225 }
226
227 public static void setJavaBeansAccess(JavaBeansAccess access) {
228 javaBeansAccess = access;
229 }
230 }