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 jdk.internal.misc;
27
28 import java.lang.module.ModuleDescriptor;
29 import java.util.jar.JarFile;
30 import java.io.Console;
31 import java.io.FileDescriptor;
32 import java.io.FilePermission;
33 import java.io.ObjectInputStream;
34 import java.io.RandomAccessFile;
35 import java.security.ProtectionDomain;
36 import java.security.AccessController;
37
38 /** A repository of "shared secrets", which are a mechanism for
39 calling implementation-private methods in another package without
40 using reflection. A package-private class implements a public
41 interface and provides the ability to call package-private methods
42 within that package; the object implementing that interface is
43 provided through a third package to which access is restricted.
44 This framework avoids the primary disadvantage of using reflection
45 for this purpose, namely the loss of compile-time checking. */
46
47 public class SharedSecrets {
48 private static final Unsafe unsafe = Unsafe.getUnsafe();
49 private static JavaUtilJarAccess javaUtilJarAccess;
50 private static JavaLangAccess javaLangAccess;
51 private static JavaLangModuleAccess javaLangModuleAccess;
52 private static JavaLangReflectModuleAccess javaLangReflectModuleAccess;
53 private static JavaLangInvokeAccess javaLangInvokeAccess;
54 private static JavaLangRefAccess javaLangRefAccess;
55 private static JavaIOAccess javaIOAccess;
56 private static JavaNetAccess javaNetAccess;
57 private static JavaNetInetAddressAccess javaNetInetAddressAccess;
58 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
59 private static JavaNetSocketAccess javaNetSocketAccess;
60 private static JavaNioAccess javaNioAccess;
61 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
62 private static JavaIOFilePermissionAccess javaIOFilePermissionAccess;
63 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
64 private static JavaSecurityAccess javaSecurityAccess;
65 private static JavaUtilZipFileAccess javaUtilZipFileAccess;
66 private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess;
67 private static JavaAWTAccess javaAWTAccess;
68 private static JavaAWTFontAccess javaAWTFontAccess;
69 private static JavaBeansAccess javaBeansAccess;
70 private static JavaObjectInputStreamAccess javaObjectInputStreamAccess;
71 private static JavaIORandomAccessFileAccess javaIORandomAccessFileAccess;
72
73 public static JavaUtilJarAccess javaUtilJarAccess() {
74 if (javaUtilJarAccess == null) {
75 // Ensure JarFile is initialized; we know that that class
76 // provides the shared secret
77 unsafe.ensureClassInitialized(JarFile.class);
78 }
79 return javaUtilJarAccess;
80 }
81
82 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
83 javaUtilJarAccess = access;
84 }
85
86 public static void setJavaLangAccess(JavaLangAccess jla) {
87 javaLangAccess = jla;
88 }
89
90 public static JavaLangAccess getJavaLangAccess() {
91 return javaLangAccess;
92 }
93
94 public static void setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
95 javaLangInvokeAccess = jlia;
96 }
97
98 public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
99 if (javaLangInvokeAccess == null) {
100 try {
101 Class<?> c = Class.forName("java.lang.invoke.MethodHandleImpl");
102 unsafe.ensureClassInitialized(c);
103 } catch (ClassNotFoundException e) {};
104 }
105 return javaLangInvokeAccess;
106 }
107
108 public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) {
109 javaLangModuleAccess = jlrma;
110 }
111
112 public static JavaLangModuleAccess getJavaLangModuleAccess() {
113 if (javaLangModuleAccess == null) {
114 unsafe.ensureClassInitialized(ModuleDescriptor.class);
115 }
116 return javaLangModuleAccess;
117 }
118
119 public static void setJavaLangReflectModuleAccess(JavaLangReflectModuleAccess jlrma) {
120 javaLangReflectModuleAccess = jlrma;
121 }
122
123 public static JavaLangReflectModuleAccess getJavaLangReflectModuleAccess() {
124 if (javaLangReflectModuleAccess == null)
125 unsafe.ensureClassInitialized(java.lang.reflect.Module.class);
126 return javaLangReflectModuleAccess;
127 }
128
129 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
130 javaLangRefAccess = jlra;
131 }
132
133 public static JavaLangRefAccess getJavaLangRefAccess() {
134 return javaLangRefAccess;
135 }
136
137 public static void setJavaNetAccess(JavaNetAccess jna) {
138 javaNetAccess = jna;
139 }
140
141 public static JavaNetAccess getJavaNetAccess() {
142 if (javaNetAccess == null)
143 unsafe.ensureClassInitialized(java.net.URI.class);
144 return javaNetAccess;
145 }
146
147 public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
148 javaNetInetAddressAccess = jna;
149 }
150
151 public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
152 if (javaNetInetAddressAccess == null)
153 unsafe.ensureClassInitialized(java.net.InetAddress.class);
154 return javaNetInetAddressAccess;
155 }
156
157 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
158 javaNetHttpCookieAccess = a;
159 }
160
161 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
162 if (javaNetHttpCookieAccess == null)
163 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
164 return javaNetHttpCookieAccess;
165 }
166
167 public static void setJavaNetSocketAccess(JavaNetSocketAccess jnsa) {
168 javaNetSocketAccess = jnsa;
169 }
170
171 public static JavaNetSocketAccess getJavaNetSocketAccess() {
172 if (javaNetSocketAccess == null)
173 unsafe.ensureClassInitialized(java.net.ServerSocket.class);
174 return javaNetSocketAccess;
175 }
176
177 public static void setJavaNioAccess(JavaNioAccess jna) {
178 javaNioAccess = jna;
179 }
180
181 public static JavaNioAccess getJavaNioAccess() {
182 if (javaNioAccess == null) {
183 // Ensure java.nio.ByteOrder is initialized; we know that
184 // this class initializes java.nio.Bits that provides the
185 // shared secret.
186 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
187 }
188 return javaNioAccess;
189 }
190
191 public static void setJavaIOAccess(JavaIOAccess jia) {
192 javaIOAccess = jia;
193 }
194
195 public static JavaIOAccess getJavaIOAccess() {
196 if (javaIOAccess == null) {
197 unsafe.ensureClassInitialized(Console.class);
198 }
199 return javaIOAccess;
200 }
201
202 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
203 javaIOFileDescriptorAccess = jiofda;
204 }
205
206 public static JavaIOFilePermissionAccess getJavaIOFilePermissionAccess() {
207 if (javaIOFilePermissionAccess == null)
208 unsafe.ensureClassInitialized(FilePermission.class);
209
210 return javaIOFilePermissionAccess;
211 }
212
213 public static void setJavaIOFilePermissionAccess(JavaIOFilePermissionAccess jiofpa) {
214 javaIOFilePermissionAccess = jiofpa;
215 }
216
217 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
218 if (javaIOFileDescriptorAccess == null)
219 unsafe.ensureClassInitialized(FileDescriptor.class);
220
221 return javaIOFileDescriptorAccess;
222 }
223
224 public static void setJavaSecurityProtectionDomainAccess
225 (JavaSecurityProtectionDomainAccess jspda) {
226 javaSecurityProtectionDomainAccess = jspda;
227 }
228
229 public static JavaSecurityProtectionDomainAccess
230 getJavaSecurityProtectionDomainAccess() {
231 if (javaSecurityProtectionDomainAccess == null)
232 unsafe.ensureClassInitialized(ProtectionDomain.class);
233 return javaSecurityProtectionDomainAccess;
234 }
235
236 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
237 javaSecurityAccess = jsa;
238 }
239
240 public static JavaSecurityAccess getJavaSecurityAccess() {
241 if (javaSecurityAccess == null) {
242 unsafe.ensureClassInitialized(AccessController.class);
243 }
244 return javaSecurityAccess;
245 }
246
247 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
248 if (javaUtilZipFileAccess == null)
249 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
250 return javaUtilZipFileAccess;
251 }
252
253 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
254 javaUtilZipFileAccess = access;
255 }
256
257 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
258 javaAWTAccess = jaa;
259 }
260
261 public static JavaAWTAccess getJavaAWTAccess() {
262 // this may return null in which case calling code needs to
263 // provision for.
264 return javaAWTAccess;
265 }
266
267 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
268 javaAWTFontAccess = jafa;
269 }
270
271 public static JavaAWTFontAccess getJavaAWTFontAccess() {
272 // this may return null in which case calling code needs to
273 // provision for.
274 return javaAWTFontAccess;
275 }
276
277 public static JavaBeansAccess getJavaBeansAccess() {
278 return javaBeansAccess;
279 }
280
281 public static void setJavaBeansAccess(JavaBeansAccess access) {
282 javaBeansAccess = access;
283 }
284
285 public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() {
286 return javaUtilResourceBundleAccess;
287 }
288
289 public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) {
290 javaUtilResourceBundleAccess = access;
291 }
292
293 public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() {
294 if (javaObjectInputStreamAccess == null) {
295 unsafe.ensureClassInitialized(ObjectInputStream.class);
296 }
297 return javaObjectInputStreamAccess;
298 }
299
300 public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) {
301 javaObjectInputStreamAccess = access;
302 }
303
304 public static void setJavaIORandomAccessFileAccess(JavaIORandomAccessFileAccess jirafa) {
305 javaIORandomAccessFileAccess = jirafa;
306 }
307
308 public static JavaIORandomAccessFileAccess getJavaIORandomAccessFileAccess() {
309 if (javaIORandomAccessFileAccess == null) {
310 unsafe.ensureClassInitialized(RandomAccessFile.class);
311 }
312 return javaIORandomAccessFileAccess;
313 }
314 }