author | ohair |
Tue, 25 May 2010 15:58:33 -0700 | |
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parent 5462 | cb614e59f7f9 |
child 8556 | d3d6e4643560 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.misc; |
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import java.util.jar.JarFile; |
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import java.io.Console; |
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import java.io.FileDescriptor; |
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import java.security.CodeSigner; |
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import java.security.ProtectionDomain; |
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/** A repository of "shared secrets", which are a mechanism for |
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calling implementation-private methods in another package without |
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using reflection. A package-private class implements a public |
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interface and provides the ability to call package-private methods |
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within that package; the object implementing that interface is |
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provided through a third package to which access is restricted. |
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This framework avoids the primary disadvantage of using reflection |
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for this purpose, namely the loss of compile-time checking. */ |
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public class SharedSecrets { |
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private static final Unsafe unsafe = Unsafe.getUnsafe(); |
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private static JavaUtilJarAccess javaUtilJarAccess; |
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private static JavaLangAccess javaLangAccess; |
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private static JavaIOAccess javaIOAccess; |
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private static JavaNetAccess javaNetAccess; |
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private static JavaNioAccess javaNioAccess; |
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private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess; |
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private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess; |
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private static JavaSecurityCodeSignerAccess javaSecurityCodeSignerAccess; |
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public static JavaUtilJarAccess javaUtilJarAccess() { |
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if (javaUtilJarAccess == null) { |
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// Ensure JarFile is initialized; we know that that class |
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// provides the shared secret |
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unsafe.ensureClassInitialized(JarFile.class); |
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} |
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return javaUtilJarAccess; |
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} |
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public static void setJavaUtilJarAccess(JavaUtilJarAccess access) { |
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javaUtilJarAccess = access; |
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} |
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public static void setJavaLangAccess(JavaLangAccess jla) { |
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javaLangAccess = jla; |
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} |
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public static JavaLangAccess getJavaLangAccess() { |
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return javaLangAccess; |
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} |
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public static void setJavaNetAccess(JavaNetAccess jna) { |
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javaNetAccess = jna; |
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} |
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public static JavaNetAccess getJavaNetAccess() { |
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return javaNetAccess; |
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} |
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public static void setJavaNioAccess(JavaNioAccess jna) { |
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javaNioAccess = jna; |
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} |
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public static JavaNioAccess getJavaNioAccess() { |
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if (javaNioAccess == null) { |
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// Ensure java.nio.ByteOrder is initialized; we know that |
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// this class initializes java.nio.Bits that provides the |
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// shared secret. |
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unsafe.ensureClassInitialized(java.nio.ByteOrder.class); |
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} |
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return javaNioAccess; |
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} |
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public static void setJavaIOAccess(JavaIOAccess jia) { |
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javaIOAccess = jia; |
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} |
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public static JavaIOAccess getJavaIOAccess() { |
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if (javaIOAccess == null) { |
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unsafe.ensureClassInitialized(Console.class); |
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} |
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return javaIOAccess; |
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} |
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public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) { |
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javaIOFileDescriptorAccess = jiofda; |
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} |
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public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() { |
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if (javaIOFileDescriptorAccess == null) |
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unsafe.ensureClassInitialized(FileDescriptor.class); |
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return javaIOFileDescriptorAccess; |
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} |
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public static void setJavaSecurityProtectionDomainAccess |
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(JavaSecurityProtectionDomainAccess jspda) { |
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javaSecurityProtectionDomainAccess = jspda; |
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} |
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public static JavaSecurityProtectionDomainAccess |
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getJavaSecurityProtectionDomainAccess() { |
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if (javaSecurityProtectionDomainAccess == null) |
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unsafe.ensureClassInitialized(ProtectionDomain.class); |
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return javaSecurityProtectionDomainAccess; |
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} |
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public static void setJavaSecurityCodeSignerAccess |
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(JavaSecurityCodeSignerAccess jscsa) { |
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javaSecurityCodeSignerAccess = jscsa; |
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} |
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public static JavaSecurityCodeSignerAccess |
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getJavaSecurityCodeSignerAccess() { |
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if (javaSecurityCodeSignerAccess == null) |
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unsafe.ensureClassInitialized(CodeSigner.class); |
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return javaSecurityCodeSignerAccess; |
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} |
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} |