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.ObjectInputStream;
33 import java.io.RandomAccessFile;
34 import java.security.ProtectionDomain;
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 JavaLangModuleAccess javaLangModuleAccess;
51 private static JavaLangReflectModuleAccess javaLangReflectModuleAccess;
52 private static JavaLangInvokeAccess javaLangInvokeAccess;
53 private static JavaLangRefAccess javaLangRefAccess;
54 private static JavaIOAccess javaIOAccess;
55 private static JavaNetAccess javaNetAccess;
56 private static JavaNetInetAddressAccess javaNetInetAddressAccess;
57 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
58 private static JavaNetSocketAccess javaNetSocketAccess;
59 private static JavaNioAccess javaNioAccess;
60 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
61 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
62 private static JavaSecurityAccess javaSecurityAccess;
63 private static JavaUtilZipFileAccess javaUtilZipFileAccess;
64 private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess;
65 private static JavaAWTAccess javaAWTAccess;
66 private static JavaAWTFontAccess javaAWTFontAccess;
67 private static JavaBeansAccess javaBeansAccess;
68 private static JavaObjectInputStreamAccess javaObjectInputStreamAccess;
69 private static JavaIORandomAccessFileAccess javaIORandomAccessFileAccess;
70
71 public static JavaUtilJarAccess javaUtilJarAccess() {
72 if (javaUtilJarAccess == null) {
73 // Ensure JarFile is initialized; we know that that class
74 // provides the shared secret
75 unsafe.ensureClassInitialized(JarFile.class);
76 }
77 return javaUtilJarAccess;
78 }
79
80 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
81 javaUtilJarAccess = access;
82 }
83
84 public static void setJavaLangAccess(JavaLangAccess jla) {
85 javaLangAccess = jla;
86 }
87
88 public static JavaLangAccess getJavaLangAccess() {
89 return javaLangAccess;
90 }
91
92 public static void setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
93 javaLangInvokeAccess = jlia;
94 }
95
96 public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
97 if (javaLangInvokeAccess == null) {
98 try {
99 Class<?> c = Class.forName("java.lang.invoke.MethodHandleImpl");
100 unsafe.ensureClassInitialized(c);
101 } catch (ClassNotFoundException e) {};
102 }
103 return javaLangInvokeAccess;
104 }
105
106 public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) {
107 javaLangModuleAccess = jlrma;
108 }
109
110 public static JavaLangModuleAccess getJavaLangModuleAccess() {
111 if (javaLangModuleAccess == null) {
112 unsafe.ensureClassInitialized(ModuleDescriptor.class);
113 }
114 return javaLangModuleAccess;
115 }
116
117 public static void setJavaLangReflectModuleAccess(JavaLangReflectModuleAccess jlrma) {
118 javaLangReflectModuleAccess = jlrma;
119 }
120
121 public static JavaLangReflectModuleAccess getJavaLangReflectModuleAccess() {
122 if (javaLangReflectModuleAccess == null)
123 unsafe.ensureClassInitialized(java.lang.reflect.Module.class);
124 return javaLangReflectModuleAccess;
125 }
126
127 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
128 javaLangRefAccess = jlra;
129 }
130
131 public static JavaLangRefAccess getJavaLangRefAccess() {
132 return javaLangRefAccess;
133 }
134
135 public static void setJavaNetAccess(JavaNetAccess jna) {
136 javaNetAccess = jna;
137 }
138
139 public static JavaNetAccess getJavaNetAccess() {
140 if (javaNetAccess == null)
141 unsafe.ensureClassInitialized(java.net.URLClassLoader.class);
142 return javaNetAccess;
143 }
144
145 public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
146 javaNetInetAddressAccess = jna;
147 }
148
149 public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
150 if (javaNetInetAddressAccess == null)
151 unsafe.ensureClassInitialized(java.net.InetAddress.class);
152 return javaNetInetAddressAccess;
153 }
154
155 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
156 javaNetHttpCookieAccess = a;
157 }
158
159 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
160 if (javaNetHttpCookieAccess == null)
161 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
162 return javaNetHttpCookieAccess;
163 }
164
165 public static void setJavaNetSocketAccess(JavaNetSocketAccess jnsa) {
166 javaNetSocketAccess = jnsa;
167 }
168
169 public static JavaNetSocketAccess getJavaNetSocketAccess() {
170 if (javaNetSocketAccess == null)
171 unsafe.ensureClassInitialized(java.net.ServerSocket.class);
172 return javaNetSocketAccess;
173 }
174
175 public static void setJavaNioAccess(JavaNioAccess jna) {
176 javaNioAccess = jna;
177 }
178
179 public static JavaNioAccess getJavaNioAccess() {
180 if (javaNioAccess == null) {
181 // Ensure java.nio.ByteOrder is initialized; we know that
182 // this class initializes java.nio.Bits that provides the
183 // shared secret.
184 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
185 }
186 return javaNioAccess;
187 }
188
189 public static void setJavaIOAccess(JavaIOAccess jia) {
190 javaIOAccess = jia;
191 }
192
193 public static JavaIOAccess getJavaIOAccess() {
194 if (javaIOAccess == null) {
195 unsafe.ensureClassInitialized(Console.class);
196 }
197 return javaIOAccess;
198 }
199
200 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
201 javaIOFileDescriptorAccess = jiofda;
202 }
203
204 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
205 if (javaIOFileDescriptorAccess == null)
206 unsafe.ensureClassInitialized(FileDescriptor.class);
207
208 return javaIOFileDescriptorAccess;
209 }
210
211 public static void setJavaSecurityProtectionDomainAccess
212 (JavaSecurityProtectionDomainAccess jspda) {
213 javaSecurityProtectionDomainAccess = jspda;
214 }
215
216 public static JavaSecurityProtectionDomainAccess
217 getJavaSecurityProtectionDomainAccess() {
218 if (javaSecurityProtectionDomainAccess == null)
219 unsafe.ensureClassInitialized(ProtectionDomain.class);
220 return javaSecurityProtectionDomainAccess;
221 }
222
223 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
224 javaSecurityAccess = jsa;
225 }
226
227 public static JavaSecurityAccess getJavaSecurityAccess() {
228 if (javaSecurityAccess == null) {
229 unsafe.ensureClassInitialized(AccessController.class);
230 }
231 return javaSecurityAccess;
232 }
233
234 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
235 if (javaUtilZipFileAccess == null)
236 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
237 return javaUtilZipFileAccess;
238 }
239
240 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
241 javaUtilZipFileAccess = access;
242 }
243
244 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
245 javaAWTAccess = jaa;
246 }
247
248 public static JavaAWTAccess getJavaAWTAccess() {
249 // this may return null in which case calling code needs to
250 // provision for.
251 return javaAWTAccess;
252 }
253
254 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
255 javaAWTFontAccess = jafa;
256 }
257
258 public static JavaAWTFontAccess getJavaAWTFontAccess() {
259 // this may return null in which case calling code needs to
260 // provision for.
261 return javaAWTFontAccess;
262 }
263
264 public static JavaBeansAccess getJavaBeansAccess() {
265 return javaBeansAccess;
266 }
267
268 public static void setJavaBeansAccess(JavaBeansAccess access) {
269 javaBeansAccess = access;
270 }
271
272 public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() {
273 return javaUtilResourceBundleAccess;
274 }
275
276 public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) {
277 javaUtilResourceBundleAccess = access;
278 }
279
280 public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() {
281 if (javaObjectInputStreamAccess == null) {
282 unsafe.ensureClassInitialized(ObjectInputStream.class);
283 }
284 return javaObjectInputStreamAccess;
285 }
286
287 public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) {
288 javaObjectInputStreamAccess = access;
289 }
290
291 public static void setJavaIORandomAccessFileAccess(JavaIORandomAccessFileAccess jirafa) {
292 javaIORandomAccessFileAccess = jirafa;
293 }
294
295 public static JavaIORandomAccessFileAccess getJavaIORandomAccessFileAccess() {
296 if (javaIORandomAccessFileAccess == null) {
297 unsafe.ensureClassInitialized(RandomAccessFile.class);
298 }
299 return javaIORandomAccessFileAccess;
300 }
301 }