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 sun.misc;

    27 

    28 import java.util.jar.JarFile;

    29 import java.io.Console;

    30 import java.io.FileDescriptor;

    31 import java.security.ProtectionDomain;

    32 

    33 import java.security.AccessController;

    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 JavaLangRefAccess javaLangRefAccess;

    49     private static JavaIOAccess javaIOAccess;

    50     private static JavaNetAccess javaNetAccess;

    51     private static JavaNetInetAddressAccess javaNetInetAddressAccess;

    52     private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;

    53     private static JavaNioAccess javaNioAccess;

    54     private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;

    55     private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;

    56     private static JavaSecurityAccess javaSecurityAccess;

    57     private static JavaUtilZipFileAccess javaUtilZipFileAccess;

    58     private static JavaAWTAccess javaAWTAccess;

    59     private static JavaAWTFontAccess javaAWTFontAccess;

    60     private static JavaBeansAccess javaBeansAccess;

    61 

    62     public static JavaUtilJarAccess javaUtilJarAccess() {

    63         if (javaUtilJarAccess == null) {

    64             // Ensure JarFile is initialized; we know that that class

    65             // provides the shared secret

    66             unsafe.ensureClassInitialized(JarFile.class);

    67         }

    68         return javaUtilJarAccess;

    69     }

    70 

    71     public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {

    72         javaUtilJarAccess = access;

    73     }

    74 

    75     public static void setJavaLangAccess(JavaLangAccess jla) {

    76         javaLangAccess = jla;

    77     }

    78 

    79     public static JavaLangAccess getJavaLangAccess() {

    80         return javaLangAccess;

    81     }

    82 

    83     public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {

    84         javaLangRefAccess = jlra;

    85     }

    86 

    87     public static JavaLangRefAccess getJavaLangRefAccess() {

    88         return javaLangRefAccess;

    89     }

    90 

    91     public static void setJavaNetAccess(JavaNetAccess jna) {

    92         javaNetAccess = jna;

    93     }

    94 

    95     public static JavaNetAccess getJavaNetAccess() {

    96         if (javaNetAccess == null)

    97             unsafe.ensureClassInitialized(java.net.URLClassLoader.class);

    98         return javaNetAccess;

    99     }

   100 

   101     public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {

   102         javaNetInetAddressAccess = jna;

   103     }

   104 

   105     public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {

   106         return javaNetInetAddressAccess;

   107     }

   108 

   109     public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {

   110         javaNetHttpCookieAccess = a;

   111     }

   112 

   113     public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {

   114         if (javaNetHttpCookieAccess == null)

   115             unsafe.ensureClassInitialized(java.net.HttpCookie.class);

   116         return javaNetHttpCookieAccess;

   117     }

   118 

   119     public static void setJavaNioAccess(JavaNioAccess jna) {

   120         javaNioAccess = jna;

   121     }

   122 

   123     public static JavaNioAccess getJavaNioAccess() {

   124         if (javaNioAccess == null) {

   125             // Ensure java.nio.ByteOrder is initialized; we know that

   126             // this class initializes java.nio.Bits that provides the

   127             // shared secret.

   128             unsafe.ensureClassInitialized(java.nio.ByteOrder.class);

   129         }

   130         return javaNioAccess;

   131     }

   132 

   133     public static void setJavaIOAccess(JavaIOAccess jia) {

   134         javaIOAccess = jia;

   135     }

   136 

   137     public static JavaIOAccess getJavaIOAccess() {

   138         if (javaIOAccess == null) {

   139             unsafe.ensureClassInitialized(Console.class);

   140         }

   141         return javaIOAccess;

   142     }

   143 

   144     public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {

   145         javaIOFileDescriptorAccess = jiofda;

   146     }

   147 

   148     public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {

   149         if (javaIOFileDescriptorAccess == null)

   150             unsafe.ensureClassInitialized(FileDescriptor.class);

   151 

   152         return javaIOFileDescriptorAccess;

   153     }

   154 

   155     public static void setJavaSecurityProtectionDomainAccess

   156         (JavaSecurityProtectionDomainAccess jspda) {

   157             javaSecurityProtectionDomainAccess = jspda;

   158     }

   159 

   160     public static JavaSecurityProtectionDomainAccess

   161         getJavaSecurityProtectionDomainAccess() {

   162             if (javaSecurityProtectionDomainAccess == null)

   163                 unsafe.ensureClassInitialized(ProtectionDomain.class);

   164             return javaSecurityProtectionDomainAccess;

   165     }

   166 

   167     public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {

   168         javaSecurityAccess = jsa;

   169     }

   170 

   171     public static JavaSecurityAccess getJavaSecurityAccess() {

   172         if (javaSecurityAccess == null) {

   173             unsafe.ensureClassInitialized(AccessController.class);

   174         }

   175         return javaSecurityAccess;

   176     }

   177 

   178     public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {

   179         if (javaUtilZipFileAccess == null)

   180             unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);

   181         return javaUtilZipFileAccess;

   182     }

   183 

   184     public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {

   185         javaUtilZipFileAccess = access;

   186     }

   187 

   188     public static void setJavaAWTAccess(JavaAWTAccess jaa) {

   189         javaAWTAccess = jaa;

   190     }

   191 

   192     public static JavaAWTAccess getJavaAWTAccess() {

   193         // this may return null in which case calling code needs to

   194         // provision for.

   195         return javaAWTAccess;

   196     }

   197 

   198     public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {

   199         javaAWTFontAccess = jafa;

   200     }

   201 

   202     public static JavaAWTFontAccess getJavaAWTFontAccess() {

   203         // this may return null in which case calling code needs to

   204         // provision for.

   205         return javaAWTFontAccess;

   206     }

   207 

   208     public static JavaBeansAccess getJavaBeansAccess() {

   209         return javaBeansAccess;

   210     }

   211 

   212     public static void setJavaBeansAccess(JavaBeansAccess access) {

   213         javaBeansAccess = access;

   214     }

   215 }