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| 1 | +/* | |
| 2 | + * Copyright (c) 2002, 2011, 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 | +import javax.security.auth.kerberos.KeyTab; | |
| 33 | + | |
| 34 | +import java.security.AccessController; | |
| 35 | + | |
| 36 | +/** A repository of "shared secrets", which are a mechanism for | |
| 37 | + calling implementation-private methods in another package without | |
| 38 | + using reflection. A package-private class implements a public | |
| 39 | + interface and provides the ability to call package-private methods | |
| 40 | + within that package; the object implementing that interface is | |
| 41 | + provided through a third package to which access is restricted. | |
| 42 | + This framework avoids the primary disadvantage of using reflection | |
| 43 | + for this purpose, namely the loss of compile-time checking. */ | |
| 44 | + | |
| 45 | +public class SharedSecrets { | |
| 46 | + private static final Unsafe unsafe = Unsafe.getUnsafe(); | |
| 47 | + private static JavaUtilJarAccess javaUtilJarAccess; | |
| 48 | + private static JavaLangAccess javaLangAccess; | |
| 49 | + private static JavaIOAccess javaIOAccess; | |
| 50 | + private static JavaNetAccess javaNetAccess; | |
| 51 | + private static JavaNioAccess javaNioAccess; | |
| 52 | + private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess; | |
| 53 | + private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess; | |
| 54 | + private static JavaSecurityAccess javaSecurityAccess; | |
| 55 | + private static JavaxSecurityAuthKerberosAccess javaxSecurityAuthKerberosAccess; | |
| 56 | + | |
| 57 | + public static JavaUtilJarAccess javaUtilJarAccess() { | |
| 58 | + if (javaUtilJarAccess == null) { | |
| 59 | + // Ensure JarFile is initialized; we know that that class | |
| 60 | + // provides the shared secret | |
| 61 | + unsafe.ensureClassInitialized(JarFile.class); | |
| 62 | + } | |
| 63 | + return javaUtilJarAccess; | |
| 64 | + } | |
| 65 | + | |
| 66 | + public static void setJavaUtilJarAccess(JavaUtilJarAccess access) { | |
| 67 | + javaUtilJarAccess = access; | |
| 68 | + } | |
| 69 | + | |
| 70 | + public static void setJavaLangAccess(JavaLangAccess jla) { | |
| 71 | + javaLangAccess = jla; | |
| 72 | + } | |
| 73 | + | |
| 74 | + public static JavaLangAccess getJavaLangAccess() { | |
| 75 | + return javaLangAccess; | |
| 76 | + } | |
| 77 | + | |
| 78 | + public static void setJavaNetAccess(JavaNetAccess jna) { | |
| 79 | + javaNetAccess = jna; | |
| 80 | + } | |
| 81 | + | |
| 82 | + public static JavaNetAccess getJavaNetAccess() { | |
| 83 | + return javaNetAccess; | |
| 84 | + } | |
| 85 | + | |
| 86 | + public static void setJavaNioAccess(JavaNioAccess jna) { | |
| 87 | + javaNioAccess = jna; | |
| 88 | + } | |
| 89 | + | |
| 90 | + public static JavaNioAccess getJavaNioAccess() { | |
| 91 | + if (javaNioAccess == null) { | |
| 92 | + // Ensure java.nio.ByteOrder is initialized; we know that | |
| 93 | + // this class initializes java.nio.Bits that provides the | |
| 94 | + // shared secret. | |
| 95 | + unsafe.ensureClassInitialized(java.nio.ByteOrder.class); | |
| 96 | + } | |
| 97 | + return javaNioAccess; | |
| 98 | + } | |
| 99 | + | |
| 100 | + public static void setJavaIOAccess(JavaIOAccess jia) { | |
| 101 | + javaIOAccess = jia; | |
| 102 | + } | |
| 103 | + | |
| 104 | + public static JavaIOAccess getJavaIOAccess() { | |
| 105 | + if (javaIOAccess == null) { | |
| 106 | + unsafe.ensureClassInitialized(Console.class); | |
| 107 | + } | |
| 108 | + return javaIOAccess; | |
| 109 | + } | |
| 110 | + | |
| 111 | + public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) { | |
| 112 | + javaIOFileDescriptorAccess = jiofda; | |
| 113 | + } | |
| 114 | + | |
| 115 | + public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() { | |
| 116 | + if (javaIOFileDescriptorAccess == null) | |
| 117 | + unsafe.ensureClassInitialized(FileDescriptor.class); | |
| 118 | + | |
| 119 | + return javaIOFileDescriptorAccess; | |
| 120 | + } | |
| 121 | + | |
| 122 | + public static void setJavaSecurityProtectionDomainAccess | |
| 123 | + (JavaSecurityProtectionDomainAccess jspda) { | |
| 124 | + javaSecurityProtectionDomainAccess = jspda; | |
| 125 | + } | |
| 126 | + | |
| 127 | + public static JavaSecurityProtectionDomainAccess | |
| 128 | + getJavaSecurityProtectionDomainAccess() { | |
| 129 | + if (javaSecurityProtectionDomainAccess == null) | |
| 130 | + unsafe.ensureClassInitialized(ProtectionDomain.class); | |
| 131 | + return javaSecurityProtectionDomainAccess; | |
| 132 | + } | |
| 133 | + | |
| 134 | + public static void setJavaSecurityAccess(JavaSecurityAccess jsa) { | |
| 135 | + javaSecurityAccess = jsa; | |
| 136 | + } | |
| 137 | + | |
| 138 | + public static JavaSecurityAccess getJavaSecurityAccess() { | |
| 139 | + if (javaSecurityAccess == null) { | |
| 140 | + unsafe.ensureClassInitialized(AccessController.class); | |
| 141 | + } | |
| 142 | + return javaSecurityAccess; | |
| 143 | + } | |
| 144 | + | |
| 145 | + public static void setJavaxSecurityAuthKerberosAccess | |
| 146 | + (JavaxSecurityAuthKerberosAccess jsaka) { | |
| 147 | + javaxSecurityAuthKerberosAccess = jsaka; | |
| 148 | + } | |
| 149 | + | |
| 150 | + public static JavaxSecurityAuthKerberosAccess | |
| 151 | + getJavaxSecurityAuthKerberosAccess() { | |
| 152 | + if (javaxSecurityAuthKerberosAccess == null) | |
| 153 | + unsafe.ensureClassInitialized(KeyTab.class); | |
| 154 | + return javaxSecurityAuthKerberosAccess; | |
| 155 | + } | |
| 156 | +} | |