/*
* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.misc;
import java.util.jar.JarFile;
import java.io.Console;
import java.io.FileDescriptor;
import java.security.ProtectionDomain;
import java.util.zip.Adler32;
import javax.security.auth.kerberos.KeyTab;
import java.security.AccessController;
/** A repository of "shared secrets", which are a mechanism for
calling implementation-private methods in another package without
using reflection. A package-private class implements a public
interface and provides the ability to call package-private methods
within that package; the object implementing that interface is
provided through a third package to which access is restricted.
This framework avoids the primary disadvantage of using reflection
for this purpose, namely the loss of compile-time checking. */
public class SharedSecrets {
private static final Unsafe unsafe = Unsafe.getUnsafe();
private static JavaUtilJarAccess javaUtilJarAccess;
private static JavaLangAccess javaLangAccess;
private static JavaIOAccess javaIOAccess;
private static JavaNetAccess javaNetAccess;
private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
private static JavaNioAccess javaNioAccess;
private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
private static JavaSecurityAccess javaSecurityAccess;
private static JavaxSecurityAuthKerberosAccess javaxSecurityAuthKerberosAccess;
private static JavaUtilZipAccess javaUtilZipAccess;
private static JavaUtilZipFileAccess javaUtilZipFileAccess;
private static JavaAWTAccess javaAWTAccess;
public static JavaUtilJarAccess javaUtilJarAccess() {
if (javaUtilJarAccess == null) {
// Ensure JarFile is initialized; we know that that class
// provides the shared secret
unsafe.ensureClassInitialized(JarFile.class);
}
return javaUtilJarAccess;
}
public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
javaUtilJarAccess = access;
}
public static void setJavaLangAccess(JavaLangAccess jla) {
javaLangAccess = jla;
}
public static JavaLangAccess getJavaLangAccess() {
return javaLangAccess;
}
public static void setJavaNetAccess(JavaNetAccess jna) {
javaNetAccess = jna;
}
public static JavaNetAccess getJavaNetAccess() {
return javaNetAccess;
}
public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
javaNetHttpCookieAccess = a;
}
public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
if (javaNetHttpCookieAccess == null)
unsafe.ensureClassInitialized(java.net.HttpCookie.class);
return javaNetHttpCookieAccess;
}
public static void setJavaNioAccess(JavaNioAccess jna) {
javaNioAccess = jna;
}
public static JavaNioAccess getJavaNioAccess() {
if (javaNioAccess == null) {
// Ensure java.nio.ByteOrder is initialized; we know that
// this class initializes java.nio.Bits that provides the
// shared secret.
unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
}
return javaNioAccess;
}
public static void setJavaIOAccess(JavaIOAccess jia) {
javaIOAccess = jia;
}
public static JavaIOAccess getJavaIOAccess() {
if (javaIOAccess == null) {
unsafe.ensureClassInitialized(Console.class);
}
return javaIOAccess;
}
public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
javaIOFileDescriptorAccess = jiofda;
}
public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
if (javaIOFileDescriptorAccess == null)
unsafe.ensureClassInitialized(FileDescriptor.class);
return javaIOFileDescriptorAccess;
}
public static void setJavaSecurityProtectionDomainAccess
(JavaSecurityProtectionDomainAccess jspda) {
javaSecurityProtectionDomainAccess = jspda;
}
public static JavaSecurityProtectionDomainAccess
getJavaSecurityProtectionDomainAccess() {
if (javaSecurityProtectionDomainAccess == null)
unsafe.ensureClassInitialized(ProtectionDomain.class);
return javaSecurityProtectionDomainAccess;
}
public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
javaSecurityAccess = jsa;
}
public static JavaSecurityAccess getJavaSecurityAccess() {
if (javaSecurityAccess == null) {
unsafe.ensureClassInitialized(AccessController.class);
}
return javaSecurityAccess;
}
public static void setJavaxSecurityAuthKerberosAccess
(JavaxSecurityAuthKerberosAccess jsaka) {
javaxSecurityAuthKerberosAccess = jsaka;
}
public static JavaxSecurityAuthKerberosAccess
getJavaxSecurityAuthKerberosAccess() {
if (javaxSecurityAuthKerberosAccess == null)
unsafe.ensureClassInitialized(KeyTab.class);
return javaxSecurityAuthKerberosAccess;
}
public static void setJavaUtilZipAccess(JavaUtilZipAccess access) {
javaUtilZipAccess = access;
}
public static JavaUtilZipAccess getJavaUtilZipAccess() {
if (javaUtilZipAccess == null) {
unsafe.ensureClassInitialized(Adler32.class);
}
return javaUtilZipAccess;
}
public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
if (javaUtilZipFileAccess == null)
unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
return javaUtilZipFileAccess;
}
public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
javaUtilZipFileAccess = access;
}
public static void setJavaAWTAccess(JavaAWTAccess jaa) {
javaAWTAccess = jaa;
}
public static JavaAWTAccess getJavaAWTAccess() {
// this may return null in which case calling code needs to
// provision for.
if (javaAWTAccess == null || javaAWTAccess.getContext() == null) {
return null;
}
return javaAWTAccess;
}
}