1 /*

     2  * Copyright (c) 2002, 2014, 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 JavaNetHttpCookieAccess javaNetHttpCookieAccess;

    52     private static JavaNioAccess javaNioAccess;

    53     private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;

    54     private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;

    55     private static JavaSecurityAccess javaSecurityAccess;

    56     private static JavaUtilZipFileAccess javaUtilZipFileAccess;

    57     private static JavaAWTAccess javaAWTAccess;

    58     private static JavaAWTFontAccess javaAWTFontAccess;

    59     private static JavaBeansIntrospectorAccess javaBeansIntrospectorAccess;

    60 

    61     public static JavaUtilJarAccess javaUtilJarAccess() {

    62         if (javaUtilJarAccess == null) {

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

    64             // provides the shared secret

    65             unsafe.ensureClassInitialized(JarFile.class);

    66         }

    67         return javaUtilJarAccess;

    68     }

    69 

    70     public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {

    71         javaUtilJarAccess = access;

    72     }

    73 

    74     public static void setJavaLangAccess(JavaLangAccess jla) {

    75         javaLangAccess = jla;

    76     }

    77 

    78     public static JavaLangAccess getJavaLangAccess() {

    79         return javaLangAccess;

    80     }

    81 

    82     public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {

    83         javaLangRefAccess = jlra;

    84     }

    85 

    86     public static JavaLangRefAccess getJavaLangRefAccess() {

    87         return javaLangRefAccess;

    88     }

    89 

    90     public static void setJavaNetAccess(JavaNetAccess jna) {

    91         javaNetAccess = jna;

    92     }

    93 

    94     public static JavaNetAccess getJavaNetAccess() {

    95         return javaNetAccess;

    96     }

    97 

    98     public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {

    99         javaNetHttpCookieAccess = a;

   100     }

   101 

   102     public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {

   103         if (javaNetHttpCookieAccess == null)

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

   105         return javaNetHttpCookieAccess;

   106     }

   107 

   108     public static void setJavaNioAccess(JavaNioAccess jna) {

   109         javaNioAccess = jna;

   110     }

   111 

   112     public static JavaNioAccess getJavaNioAccess() {

   113         if (javaNioAccess == null) {

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

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

   116             // shared secret.

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

   118         }

   119         return javaNioAccess;

   120     }

   121 

   122     public static void setJavaIOAccess(JavaIOAccess jia) {

   123         javaIOAccess = jia;

   124     }

   125 

   126     public static JavaIOAccess getJavaIOAccess() {

   127         if (javaIOAccess == null) {

   128             unsafe.ensureClassInitialized(Console.class);

   129         }

   130         return javaIOAccess;

   131     }

   132 

   133     public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {

   134         javaIOFileDescriptorAccess = jiofda;

   135     }

   136 

   137     public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {

   138         if (javaIOFileDescriptorAccess == null)

   139             unsafe.ensureClassInitialized(FileDescriptor.class);

   140 

   141         return javaIOFileDescriptorAccess;

   142     }

   143 

   144     public static void setJavaSecurityProtectionDomainAccess

   145         (JavaSecurityProtectionDomainAccess jspda) {

   146             javaSecurityProtectionDomainAccess = jspda;

   147     }

   148 

   149     public static JavaSecurityProtectionDomainAccess

   150         getJavaSecurityProtectionDomainAccess() {

   151             if (javaSecurityProtectionDomainAccess == null)

   152                 unsafe.ensureClassInitialized(ProtectionDomain.class);

   153             return javaSecurityProtectionDomainAccess;

   154     }

   155 

   156     public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {

   157         javaSecurityAccess = jsa;

   158     }

   159 

   160     public static JavaSecurityAccess getJavaSecurityAccess() {

   161         if (javaSecurityAccess == null) {

   162             unsafe.ensureClassInitialized(AccessController.class);

   163         }

   164         return javaSecurityAccess;

   165     }

   166 

   167     public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {

   168         if (javaUtilZipFileAccess == null)

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

   170         return javaUtilZipFileAccess;

   171     }

   172 

   173     public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {

   174         javaUtilZipFileAccess = access;

   175     }

   176 

   177     public static void setJavaAWTAccess(JavaAWTAccess jaa) {

   178         javaAWTAccess = jaa;

   179     }

   180 

   181     public static JavaAWTAccess getJavaAWTAccess() {

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

   183         // provision for.

   184         return javaAWTAccess;

   185     }

   186 

   187     public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {

   188         javaAWTFontAccess = jafa;

   189     }

   190 

   191     public static JavaAWTFontAccess getJavaAWTFontAccess() {

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

   193         // provision for.

   194         return javaAWTFontAccess;

   195     }

   196 

   197     public static JavaBeansIntrospectorAccess getJavaBeansIntrospectorAccess() {

   198         return javaBeansIntrospectorAccess;

   199     }

   200 

   201     public static void setJavaBeansIntrospectorAccess(JavaBeansIntrospectorAccess access) {

   202         javaBeansIntrospectorAccess = access;

   203     }

   204 }