diff -r ccbea9172aa5 -r 8b97fe2b7c98 src/jdk/internal/dynalink/beans/SafeUnreflector.java --- a/src/jdk/internal/dynalink/beans/SafeUnreflector.java Tue Jul 23 21:45:27 2013 +0530 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,156 +0,0 @@ -/* - * Copyright (c) 2010, 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. - * - * 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. - */ - -/* - * This file is available under and governed by the GNU General Public - * License version 2 only, as published by the Free Software Foundation. - * However, the following notice accompanied the original version of this - * file, and Oracle licenses the original version of this file under the BSD - * license: - */ -/* - Copyright 2009-2013 Attila Szegedi - - Licensed under both the Apache License, Version 2.0 (the "Apache License") - and the BSD License (the "BSD License"), with licensee being free to - choose either of the two at their discretion. - - You may not use this file except in compliance with either the Apache - License or the BSD License. - - If you choose to use this file in compliance with the Apache License, the - following notice applies to you: - - You may obtain a copy of the Apache License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or - implied. See the License for the specific language governing - permissions and limitations under the License. - - If you choose to use this file in compliance with the BSD License, the - following notice applies to you: - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the name of the copyright holder nor the names of - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER - BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -package jdk.internal.dynalink.beans; - -import java.lang.invoke.MethodHandle; -import java.lang.reflect.Constructor; -import java.lang.reflect.Field; -import java.lang.reflect.Method; -import java.security.AccessController; -import java.security.PrivilegedAction; -import jdk.internal.dynalink.beans.sandbox.Unreflector; - -/** - * Provides lookup of unreflected method handles through delegation to an instance of {@link SafeUnreflectorImpl}. If - * Dynalink is run as trusted code, the delegate class is loaded into an isolated zero-permissions protection domain, - * serving as a firebreak against an accidental privilege escalation downstream. - */ -final class SafeUnreflector { - private static final String UNREFLECTOR_IMPL_CLASS_NAME = "jdk.internal.dynalink.beans.SafeUnreflectorImpl"; - private static final Unreflector impl = createImpl(); - - private SafeUnreflector() { - } - - /** - * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflect(Method)}, converting any encountered - * {@link IllegalAccessException} into an {@link IllegalAccessError}. - * - * @param m the method to unreflect - * @return the unreflected method handle. - */ - static MethodHandle unreflect(Method m) { - return impl.unreflect(m); - } - - /** - * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectGetter(Field)}, converting any encountered - * {@link IllegalAccessException} into an {@link IllegalAccessError}. - * - * @param f the field for which a getter is unreflected - * @return the unreflected field getter handle. - */ - static MethodHandle unreflectGetter(Field f) { - return impl.unreflectGetter(f); - } - - /** - * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectSetter(Field)}, converting any encountered - * {@link IllegalAccessException} into an {@link IllegalAccessError}. - * - * @param f the field for which a setter is unreflected - * @return the unreflected field setter handle. - */ - static MethodHandle unreflectSetter(Field f) { - return impl.unreflectSetter(f); - } - - static MethodHandle unreflectConstructor(Constructor c) { - return impl.unreflectConstructor(c); - } - - private static Unreflector createImpl() { - final Class unreflectorImplClass = AccessController.doPrivileged(new PrivilegedAction>() { - @Override - public Class run() { - return SandboxClassLoader.loadClass(UNREFLECTOR_IMPL_CLASS_NAME); - } - }); - try { - return (Unreflector)unreflectorImplClass.newInstance(); - } catch(InstantiationException | IllegalAccessException e) { - throw new RuntimeException(e.getMessage(), e); - } - } -}