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