1/* 2 * Copyright (c) 2002, 2017, 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 26package jdk.internal.misc; 27 28import java.io.ObjectInputFilter; 29import java.lang.module.ModuleDescriptor; 30import java.util.ResourceBundle; 31import java.util.jar.JarFile; 32import java.io.Console; 33import java.io.FileDescriptor; 34import java.io.FilePermission; 35import java.io.ObjectInputStream; 36import java.io.RandomAccessFile; 37import java.security.ProtectionDomain; 38import java.security.AccessController; 39 40/** A repository of "shared secrets", which are a mechanism for 41 calling implementation-private methods in another package without 42 using reflection. A package-private class implements a public 43 interface and provides the ability to call package-private methods 44 within that package; the object implementing that interface is 45 provided through a third package to which access is restricted. 46 This framework avoids the primary disadvantage of using reflection 47 for this purpose, namely the loss of compile-time checking. */ 48 49public class SharedSecrets { 50 private static final Unsafe unsafe = Unsafe.getUnsafe(); 51 private static JavaUtilJarAccess javaUtilJarAccess; 52 private static JavaLangAccess javaLangAccess; 53 private static JavaLangModuleAccess javaLangModuleAccess; 54 private static JavaLangInvokeAccess javaLangInvokeAccess; 55 private static JavaLangRefAccess javaLangRefAccess; 56 private static JavaIOAccess javaIOAccess; 57 private static JavaNetInetAddressAccess javaNetInetAddressAccess; 58 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess; 59 private static JavaNetSocketAccess javaNetSocketAccess; 60 private static JavaNetUriAccess javaNetUriAccess; 61 private static JavaNetURLAccess javaNetURLAccess; 62 private static JavaNetURLClassLoaderAccess javaNetURLClassLoaderAccess; 63 private static JavaNioAccess javaNioAccess; 64 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess; 65 private static JavaIOFilePermissionAccess javaIOFilePermissionAccess; 66 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess; 67 private static JavaSecurityAccess javaSecurityAccess; 68 private static JavaUtilZipFileAccess javaUtilZipFileAccess; 69 private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess; 70 private static JavaAWTAccess javaAWTAccess; 71 private static JavaAWTFontAccess javaAWTFontAccess; 72 private static JavaBeansAccess javaBeansAccess; 73 private static JavaObjectInputStreamAccess javaObjectInputStreamAccess; 74 private static JavaObjectInputFilterAccess javaObjectInputFilterAccess; 75 private static JavaIORandomAccessFileAccess javaIORandomAccessFileAccess; 76 77 public static JavaUtilJarAccess javaUtilJarAccess() { 78 if (javaUtilJarAccess == null) { 79 // Ensure JarFile is initialized; we know that that class 80 // provides the shared secret 81 unsafe.ensureClassInitialized(JarFile.class); 82 } 83 return javaUtilJarAccess; 84 } 85 86 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) { 87 javaUtilJarAccess = access; 88 } 89 90 public static void setJavaLangAccess(JavaLangAccess jla) { 91 javaLangAccess = jla; 92 } 93 94 public static JavaLangAccess getJavaLangAccess() { 95 return javaLangAccess; 96 } 97 98 public static void setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) { 99 javaLangInvokeAccess = jlia; 100 } 101 102 public static JavaLangInvokeAccess getJavaLangInvokeAccess() { 103 if (javaLangInvokeAccess == null) { 104 try { 105 Class<?> c = Class.forName("java.lang.invoke.MethodHandleImpl"); 106 unsafe.ensureClassInitialized(c); 107 } catch (ClassNotFoundException e) {}; 108 } 109 return javaLangInvokeAccess; 110 } 111 112 public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) { 113 javaLangModuleAccess = jlrma; 114 } 115 116 public static JavaLangModuleAccess getJavaLangModuleAccess() { 117 if (javaLangModuleAccess == null) { 118 unsafe.ensureClassInitialized(ModuleDescriptor.class); 119 } 120 return javaLangModuleAccess; 121 } 122 123 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) { 124 javaLangRefAccess = jlra; 125 } 126 127 public static JavaLangRefAccess getJavaLangRefAccess() { 128 return javaLangRefAccess; 129 } 130 131 public static void setJavaNetUriAccess(JavaNetUriAccess jnua) { 132 javaNetUriAccess = jnua; 133 } 134 135 public static JavaNetUriAccess getJavaNetUriAccess() { 136 if (javaNetUriAccess == null) 137 unsafe.ensureClassInitialized(java.net.URI.class); 138 return javaNetUriAccess; 139 } 140 141 public static void setJavaNetURLAccess(JavaNetURLAccess jnua) { 142 javaNetURLAccess = jnua; 143 } 144 145 public static JavaNetURLAccess getJavaNetURLAccess() { 146 if (javaNetURLAccess == null) 147 unsafe.ensureClassInitialized(java.net.URL.class); 148 return javaNetURLAccess; 149 } 150 151 public static void setJavaNetURLClassLoaderAccess(JavaNetURLClassLoaderAccess jnua) { 152 javaNetURLClassLoaderAccess = jnua; 153 } 154 155 public static JavaNetURLClassLoaderAccess getJavaNetURLClassLoaderAccess() { 156 if (javaNetURLClassLoaderAccess == null) 157 unsafe.ensureClassInitialized(java.net.URLClassLoader.class); 158 return javaNetURLClassLoaderAccess; 159 } 160 161 public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) { 162 javaNetInetAddressAccess = jna; 163 } 164 165 public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() { 166 if (javaNetInetAddressAccess == null) 167 unsafe.ensureClassInitialized(java.net.InetAddress.class); 168 return javaNetInetAddressAccess; 169 } 170 171 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) { 172 javaNetHttpCookieAccess = a; 173 } 174 175 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() { 176 if (javaNetHttpCookieAccess == null) 177 unsafe.ensureClassInitialized(java.net.HttpCookie.class); 178 return javaNetHttpCookieAccess; 179 } 180 181 public static void setJavaNetSocketAccess(JavaNetSocketAccess jnsa) { 182 javaNetSocketAccess = jnsa; 183 } 184 185 public static JavaNetSocketAccess getJavaNetSocketAccess() { 186 if (javaNetSocketAccess == null) 187 unsafe.ensureClassInitialized(java.net.ServerSocket.class); 188 return javaNetSocketAccess; 189 } 190 191 public static void setJavaNioAccess(JavaNioAccess jna) { 192 javaNioAccess = jna; 193 } 194 195 public static JavaNioAccess getJavaNioAccess() { 196 if (javaNioAccess == null) { 197 // Ensure java.nio.ByteOrder is initialized; we know that 198 // this class initializes java.nio.Bits that provides the 199 // shared secret. 200 unsafe.ensureClassInitialized(java.nio.ByteOrder.class); 201 } 202 return javaNioAccess; 203 } 204 205 public static void setJavaIOAccess(JavaIOAccess jia) { 206 javaIOAccess = jia; 207 } 208 209 public static JavaIOAccess getJavaIOAccess() { 210 if (javaIOAccess == null) { 211 unsafe.ensureClassInitialized(Console.class); 212 } 213 return javaIOAccess; 214 } 215 216 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) { 217 javaIOFileDescriptorAccess = jiofda; 218 } 219 220 public static JavaIOFilePermissionAccess getJavaIOFilePermissionAccess() { 221 if (javaIOFilePermissionAccess == null) 222 unsafe.ensureClassInitialized(FilePermission.class); 223 224 return javaIOFilePermissionAccess; 225 } 226 227 public static void setJavaIOFilePermissionAccess(JavaIOFilePermissionAccess jiofpa) { 228 javaIOFilePermissionAccess = jiofpa; 229 } 230 231 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() { 232 if (javaIOFileDescriptorAccess == null) 233 unsafe.ensureClassInitialized(FileDescriptor.class); 234 235 return javaIOFileDescriptorAccess; 236 } 237 238 public static void setJavaSecurityProtectionDomainAccess 239 (JavaSecurityProtectionDomainAccess jspda) { 240 javaSecurityProtectionDomainAccess = jspda; 241 } 242 243 public static JavaSecurityProtectionDomainAccess 244 getJavaSecurityProtectionDomainAccess() { 245 if (javaSecurityProtectionDomainAccess == null) 246 unsafe.ensureClassInitialized(ProtectionDomain.class); 247 return javaSecurityProtectionDomainAccess; 248 } 249 250 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) { 251 javaSecurityAccess = jsa; 252 } 253 254 public static JavaSecurityAccess getJavaSecurityAccess() { 255 if (javaSecurityAccess == null) { 256 unsafe.ensureClassInitialized(AccessController.class); 257 } 258 return javaSecurityAccess; 259 } 260 261 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() { 262 if (javaUtilZipFileAccess == null) 263 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class); 264 return javaUtilZipFileAccess; 265 } 266 267 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) { 268 javaUtilZipFileAccess = access; 269 } 270 271 public static void setJavaAWTAccess(JavaAWTAccess jaa) { 272 javaAWTAccess = jaa; 273 } 274 275 public static JavaAWTAccess getJavaAWTAccess() { 276 // this may return null in which case calling code needs to 277 // provision for. 278 return javaAWTAccess; 279 } 280 281 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) { 282 javaAWTFontAccess = jafa; 283 } 284 285 public static JavaAWTFontAccess getJavaAWTFontAccess() { 286 // this may return null in which case calling code needs to 287 // provision for. 288 return javaAWTFontAccess; 289 } 290 291 public static JavaBeansAccess getJavaBeansAccess() { 292 return javaBeansAccess; 293 } 294 295 public static void setJavaBeansAccess(JavaBeansAccess access) { 296 javaBeansAccess = access; 297 } 298 299 public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() { 300 if (javaUtilResourceBundleAccess == null) 301 unsafe.ensureClassInitialized(ResourceBundle.class); 302 return javaUtilResourceBundleAccess; 303 } 304 305 public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) { 306 javaUtilResourceBundleAccess = access; 307 } 308 309 public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() { 310 if (javaObjectInputStreamAccess == null) { 311 unsafe.ensureClassInitialized(ObjectInputStream.class); 312 } 313 return javaObjectInputStreamAccess; 314 } 315 316 public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) { 317 javaObjectInputStreamAccess = access; 318 } 319 320 public static JavaObjectInputFilterAccess getJavaObjectInputFilterAccess() { 321 if (javaObjectInputFilterAccess == null) { 322 unsafe.ensureClassInitialized(ObjectInputFilter.Config.class); 323 } 324 return javaObjectInputFilterAccess; 325 } 326 327 public static void setJavaObjectInputFilterAccess(JavaObjectInputFilterAccess access) { 328 javaObjectInputFilterAccess = access; 329 } 330 331 public static void setJavaIORandomAccessFileAccess(JavaIORandomAccessFileAccess jirafa) { 332 javaIORandomAccessFileAccess = jirafa; 333 } 334 335 public static JavaIORandomAccessFileAccess getJavaIORandomAccessFileAccess() { 336 if (javaIORandomAccessFileAccess == null) { 337 unsafe.ensureClassInitialized(RandomAccessFile.class); 338 } 339 return javaIORandomAccessFileAccess; 340 } 341} 342