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	/*
	* Copyright (c) 2002, 2021, 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.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package jdk.internal.access;

	import javax.crypto.SealedObject;
	import javax.crypto.spec.SecretKeySpec;
	import java.io.ObjectInputFilter;
	import java.lang.invoke.MethodHandles;
	import java.lang.module.ModuleDescriptor;
	import java.security.spec.EncodedKeySpec;
	import java.util.ResourceBundle;
	import java.util.jar.JarFile;
	import java.io.Console;
	import java.io.FileDescriptor;
	import java.io.FilePermission;
	import java.io.ObjectInputStream;
	import java.io.RandomAccessFile;
	import java.security.ProtectionDomain;
	import java.security.Signature;

	/** 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 MethodHandles.Lookup lookup = MethodHandles.lookup();
	private static JavaAWTAccess javaAWTAccess;
	private static JavaAWTFontAccess javaAWTFontAccess;
	private static JavaBeansAccess javaBeansAccess;
	private static JavaLangAccess javaLangAccess;
	private static JavaLangInvokeAccess javaLangInvokeAccess;
	private static JavaLangModuleAccess javaLangModuleAccess;
	private static JavaLangRefAccess javaLangRefAccess;
	private static JavaLangReflectAccess javaLangReflectAccess;
	private static JavaIOAccess javaIOAccess;
	private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
	private static JavaIOFilePermissionAccess javaIOFilePermissionAccess;
	private static JavaIORandomAccessFileAccess javaIORandomAccessFileAccess;
	private static JavaObjectInputStreamReadString javaObjectInputStreamReadString;
	private static JavaObjectInputStreamAccess javaObjectInputStreamAccess;
	private static JavaObjectInputFilterAccess javaObjectInputFilterAccess;
	private static JavaNetInetAddressAccess javaNetInetAddressAccess;
	private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
	private static JavaNetUriAccess javaNetUriAccess;
	private static JavaNetURLAccess javaNetURLAccess;
	private static JavaNioAccess javaNioAccess;
	private static JavaUtilCollectionAccess javaUtilCollectionAccess;
	private static JavaUtilJarAccess javaUtilJarAccess;
	private static JavaUtilZipFileAccess javaUtilZipFileAccess;
	private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess;
	private static JavaSecurityAccess javaSecurityAccess;
	private static JavaSecuritySignatureAccess javaSecuritySignatureAccess;
	private static JavaSecuritySpecAccess javaSecuritySpecAccess;
	private static JavaxCryptoSealedObjectAccess javaxCryptoSealedObjectAccess;
	private static JavaxCryptoSpecAccess javaxCryptoSpecAccess;

	public static void setJavaUtilCollectionAccess(JavaUtilCollectionAccess juca) {
	javaUtilCollectionAccess = juca;
	}

	public static JavaUtilCollectionAccess getJavaUtilCollectionAccess() {
	var access = javaUtilCollectionAccess;
	if (access == null) {
	try {
	Class.forName("java.util.ImmutableCollections$Access", true, null);
	access = javaUtilCollectionAccess;
	} catch (ClassNotFoundException e) {}
	}
	return access;
	}

	public static JavaUtilJarAccess javaUtilJarAccess() {
	var access = javaUtilJarAccess;
	if (access == null) {
	// Ensure JarFile is initialized; we know that this class
	// provides the shared secret
	ensureClassInitialized(JarFile.class);
	access = javaUtilJarAccess;
	}
	return access;
	}

	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 setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
	javaLangInvokeAccess = jlia;
	}

	public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
	var access = javaLangInvokeAccess;
	if (access == null) {
	try {
	Class.forName("java.lang.invoke.MethodHandleImpl", true, null);
	access = javaLangInvokeAccess;
	} catch (ClassNotFoundException e) {}
	}
	return access;
	}

	public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) {
	javaLangModuleAccess = jlrma;
	}

	public static JavaLangModuleAccess getJavaLangModuleAccess() {
	var access = javaLangModuleAccess;
	if (access == null) {
	ensureClassInitialized(ModuleDescriptor.class);
	access = javaLangModuleAccess;
	}
	return access;
	}

	public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
	javaLangRefAccess = jlra;
	}

	public static JavaLangRefAccess getJavaLangRefAccess() {
	return javaLangRefAccess;
	}

	public static void setJavaLangReflectAccess(JavaLangReflectAccess jlra) {
	javaLangReflectAccess = jlra;
	}

	public static JavaLangReflectAccess getJavaLangReflectAccess() {
	return javaLangReflectAccess;
	}

	public static void setJavaNetUriAccess(JavaNetUriAccess jnua) {
	javaNetUriAccess = jnua;
	}

	public static JavaNetUriAccess getJavaNetUriAccess() {
	var access = javaNetUriAccess;
	if (access == null) {
	ensureClassInitialized(java.net.URI.class);
	access = javaNetUriAccess;
	}
	return access;
	}

	public static void setJavaNetURLAccess(JavaNetURLAccess jnua) {
	javaNetURLAccess = jnua;
	}

	public static JavaNetURLAccess getJavaNetURLAccess() {
	var access = javaNetURLAccess;
	if (access == null) {
	ensureClassInitialized(java.net.URL.class);
	access = javaNetURLAccess;
	}
	return access;
	}

	public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
	javaNetInetAddressAccess = jna;
	}

	public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
	var access = javaNetInetAddressAccess;
	if (access == null) {
	ensureClassInitialized(java.net.InetAddress.class);
	access = javaNetInetAddressAccess;
	}
	return access;
	}

	public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
	javaNetHttpCookieAccess = a;
	}

	public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
	var access = javaNetHttpCookieAccess;
	if (access == null) {
	ensureClassInitialized(java.net.HttpCookie.class);
	access = javaNetHttpCookieAccess;
	}
	return access;
	}

	public static void setJavaNioAccess(JavaNioAccess jna) {
	javaNioAccess = jna;
	}

	public static JavaNioAccess getJavaNioAccess() {
	var access = javaNioAccess;
	if (access == null) {
	// Ensure java.nio.Buffer is initialized, which provides the
	// shared secret.
	ensureClassInitialized(java.nio.Buffer.class);
	access = javaNioAccess;
	}
	return access;
	}

	public static void setJavaIOAccess(JavaIOAccess jia) {
	javaIOAccess = jia;
	}

	public static JavaIOAccess getJavaIOAccess() {
	var access = javaIOAccess;
	if (access == null) {
	ensureClassInitialized(Console.class);
	access = javaIOAccess;
	}
	return access;
	}

	public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
	javaIOFileDescriptorAccess = jiofda;
	}

	public static JavaIOFilePermissionAccess getJavaIOFilePermissionAccess() {
	var access = javaIOFilePermissionAccess;
	if (access == null) {
	ensureClassInitialized(FilePermission.class);
	access = javaIOFilePermissionAccess;
	}
	return access;
	}

	public static void setJavaIOFilePermissionAccess(JavaIOFilePermissionAccess jiofpa) {
	javaIOFilePermissionAccess = jiofpa;
	}

	public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
	var access = javaIOFileDescriptorAccess;
	if (access == null) {
	ensureClassInitialized(FileDescriptor.class);
	access = javaIOFileDescriptorAccess;
	}
	return access;
	}

	public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
	javaSecurityAccess = jsa;
	}

	public static JavaSecurityAccess getJavaSecurityAccess() {
	var access = javaSecurityAccess;
	if (access == null) {
	ensureClassInitialized(ProtectionDomain.class);
	access = javaSecurityAccess;
	}
	return access;
	}

	public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
	var access = javaUtilZipFileAccess;
	if (access == null) {
	ensureClassInitialized(java.util.zip.ZipFile.class);
	access = javaUtilZipFileAccess;
	}
	return access;
	}

	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.
	return javaAWTAccess;
	}

	public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
	javaAWTFontAccess = jafa;
	}

	public static JavaAWTFontAccess getJavaAWTFontAccess() {
	// this may return null in which case calling code needs to
	// provision for.
	return javaAWTFontAccess;
	}

	public static JavaBeansAccess getJavaBeansAccess() {
	return javaBeansAccess;
	}

	public static void setJavaBeansAccess(JavaBeansAccess access) {
	javaBeansAccess = access;
	}

	public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() {
	var access = javaUtilResourceBundleAccess;
	if (access == null) {
	ensureClassInitialized(ResourceBundle.class);
	access = javaUtilResourceBundleAccess;
	}
	return access;
	}

	public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) {
	javaUtilResourceBundleAccess = access;
	}

	public static JavaObjectInputStreamReadString getJavaObjectInputStreamReadString() {
	var access = javaObjectInputStreamReadString;
	if (access == null) {
	ensureClassInitialized(ObjectInputStream.class);
	access = javaObjectInputStreamReadString;
	}
	return access;
	}

	public static void setJavaObjectInputStreamReadString(JavaObjectInputStreamReadString access) {
	javaObjectInputStreamReadString = access;
	}

	public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() {
	var access = javaObjectInputStreamAccess;
	if (access == null) {
	ensureClassInitialized(ObjectInputStream.class);
	access = javaObjectInputStreamAccess;
	}
	return access;
	}

	public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) {
	javaObjectInputStreamAccess = access;
	}

	public static JavaObjectInputFilterAccess getJavaObjectInputFilterAccess() {
	var access = javaObjectInputFilterAccess;
	if (access == null) {
	ensureClassInitialized(ObjectInputFilter.Config.class);
	access = javaObjectInputFilterAccess;
	}
	return access;
	}

	public static void setJavaObjectInputFilterAccess(JavaObjectInputFilterAccess access) {
	javaObjectInputFilterAccess = access;
	}

	public static void setJavaIORandomAccessFileAccess(JavaIORandomAccessFileAccess jirafa) {
	javaIORandomAccessFileAccess = jirafa;
	}

	public static JavaIORandomAccessFileAccess getJavaIORandomAccessFileAccess() {
	var access = javaIORandomAccessFileAccess;
	if (access == null) {
	ensureClassInitialized(RandomAccessFile.class);
	access = javaIORandomAccessFileAccess;
	}
	return access;
	}

	public static void setJavaSecuritySignatureAccess(JavaSecuritySignatureAccess jssa) {
	javaSecuritySignatureAccess = jssa;
	}

	public static JavaSecuritySignatureAccess getJavaSecuritySignatureAccess() {
	var access = javaSecuritySignatureAccess;
	if (access == null) {
	ensureClassInitialized(Signature.class);
	access = javaSecuritySignatureAccess;
	}
	return access;
	}

	public static void setJavaSecuritySpecAccess(JavaSecuritySpecAccess jssa) {
	javaSecuritySpecAccess = jssa;
	}

	public static JavaSecuritySpecAccess getJavaSecuritySpecAccess() {
	if (javaSecuritySpecAccess == null) {
	ensureClassInitialized(EncodedKeySpec.class);
	}
	return javaSecuritySpecAccess;
	}

	public static void setJavaxCryptoSpecAccess(JavaxCryptoSpecAccess jcsa) {
	javaxCryptoSpecAccess = jcsa;
	}

	public static JavaxCryptoSpecAccess getJavaxCryptoSpecAccess() {
	if (javaxCryptoSpecAccess == null) {
	ensureClassInitialized(SecretKeySpec.class);
	}
	return javaxCryptoSpecAccess;
	}

	public static void setJavaxCryptoSealedObjectAccess(JavaxCryptoSealedObjectAccess jcsoa) {
	javaxCryptoSealedObjectAccess = jcsoa;
	}

	public static JavaxCryptoSealedObjectAccess getJavaxCryptoSealedObjectAccess() {
	var access = javaxCryptoSealedObjectAccess;
	if (access == null) {
	ensureClassInitialized(SealedObject.class);
	access = javaxCryptoSealedObjectAccess;
	}
	return access;
	}

	private static void ensureClassInitialized(Class<?> c) {
	try {
	MethodHandles.lookup().ensureInitialized(c);
	} catch (IllegalAccessException e) {}
	}
	}

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