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/*
* Copyright (c) 2011, 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 com.sun.webkit;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessControlContext;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.List;
import java.util.Set;
public abstract class Utilities {
private static Utilities instance;
public static synchronized void setUtilities(Utilities util) {
instance = util;
}
public static synchronized Utilities getUtilities() {
return instance;
}
protected abstract Pasteboard createPasteboard();
protected abstract PopupMenu createPopupMenu();
protected abstract ContextMenu createContextMenu();
// List of Class methods to allow
private static final Set CLASS_METHODS_ALLOW_LIST = Set.of(
"getCanonicalName",
"getEnumConstants",
"getFields",
"getMethods",
"getName",
"getPackageName",
"getSimpleName",
"getSuperclass",
"getTypeName",
"getTypeParameters",
"isAssignableFrom",
"isArray",
"isEnum",
"isInstance",
"isInterface",
"isLocalClass",
"isMemberClass",
"isPrimitive",
"isSynthetic",
"toGenericString",
"toString"
);
// List of classes to reject
private static final Set CLASSES_REJECT_LIST = Set.of(
"java.lang.ClassLoader",
"java.lang.Module",
"java.lang.Runtime",
"java.lang.System"
);
// List of packages to reject
private static final List PACKAGES_REJECT_LIST = List.of(
"java.lang.invoke",
"java.lang.module",
"java.lang.reflect",
"java.security",
"sun.misc"
);
@SuppressWarnings("removal")
private static Object fwkInvokeWithContext(final Method method,
final Object instance,
final Object[] args,
AccessControlContext acc)
throws Throwable {
final Class clazz = method.getDeclaringClass();
if (clazz.equals(java.lang.Class.class)) {
// check list of allowed Class methods
if (!CLASS_METHODS_ALLOW_LIST.contains(method.getName())) {
throw new UnsupportedOperationException("invocation not supported");
}
} else {
// check list of rejected class names
final String className = clazz.getName();
if (CLASSES_REJECT_LIST.contains(className)) {
throw new UnsupportedOperationException("invocation not supported");
}
// check list of rejected packages
PACKAGES_REJECT_LIST.forEach(packageName -> {
if (className.startsWith(packageName + ".")) {
throw new UnsupportedOperationException("invocation not supported");
}
});
}
try {
return AccessController.doPrivileged((PrivilegedExceptionAction
