Mercurial > jdk8-mips64-public > nashorn / annotate
src/jdk/internal/dynalink/support/ClassLoaderGetterContextProvider.java@3c13fba4d727 (annotated)
src/jdk/internal/dynalink/support/ClassLoaderGetterContextProvider.java
Mon, 12 Aug 2013 12:46:01 +0200
- author
- attila
- date
- Mon, 12 Aug 2013 12:46:01 +0200
- changeset 494
- 3c13fba4d727
- parent 0
- b1a7da25b547
- permissions
- -rw-r--r--
8022789: Revisit doPrivileged blocks in Dynalink
Reviewed-by: lagergren, sundar
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | /* |
| aoqi@0 | 27 | * This file is available under and governed by the GNU General Public |
| aoqi@0 | 28 | * License version 2 only, as published by the Free Software Foundation. |
| aoqi@0 | 29 | * However, the following notice accompanied the original version of this |
| aoqi@0 | 30 | * file, and Oracle licenses the original version of this file under the BSD |
| aoqi@0 | 31 | * license: |
| aoqi@0 | 32 | */ |
| aoqi@0 | 33 | /* |
| aoqi@0 | 34 | Copyright 2009-2013 Attila Szegedi |
| aoqi@0 | 35 | |
| aoqi@0 | 36 | Licensed under both the Apache License, Version 2.0 (the "Apache License") |
| aoqi@0 | 37 | and the BSD License (the "BSD License"), with licensee being free to |
| aoqi@0 | 38 | choose either of the two at their discretion. |
| aoqi@0 | 39 | |
| aoqi@0 | 40 | You may not use this file except in compliance with either the Apache |
| aoqi@0 | 41 | License or the BSD License. |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | If you choose to use this file in compliance with the Apache License, the |
| aoqi@0 | 44 | following notice applies to you: |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | You may obtain a copy of the Apache License at |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | http://www.apache.org/licenses/LICENSE-2.0 |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | Unless required by applicable law or agreed to in writing, software |
| aoqi@0 | 51 | distributed under the License is distributed on an "AS IS" BASIS, |
| aoqi@0 | 52 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| aoqi@0 | 53 | implied. See the License for the specific language governing |
| aoqi@0 | 54 | permissions and limitations under the License. |
| aoqi@0 | 55 | |
| aoqi@0 | 56 | If you choose to use this file in compliance with the BSD License, the |
| aoqi@0 | 57 | following notice applies to you: |
| aoqi@0 | 58 | |
| aoqi@0 | 59 | Redistribution and use in source and binary forms, with or without |
| aoqi@0 | 60 | modification, are permitted provided that the following conditions are |
| aoqi@0 | 61 | met: |
| aoqi@0 | 62 | * Redistributions of source code must retain the above copyright |
| aoqi@0 | 63 | notice, this list of conditions and the following disclaimer. |
| aoqi@0 | 64 | * Redistributions in binary form must reproduce the above copyright |
| aoqi@0 | 65 | notice, this list of conditions and the following disclaimer in the |
| aoqi@0 | 66 | documentation and/or other materials provided with the distribution. |
| aoqi@0 | 67 | * Neither the name of the copyright holder nor the names of |
| aoqi@0 | 68 | contributors may be used to endorse or promote products derived from |
| aoqi@0 | 69 | this software without specific prior written permission. |
| aoqi@0 | 70 | |
| aoqi@0 | 71 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| aoqi@0 | 72 | IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| aoqi@0 | 73 | TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| aoqi@0 | 74 | PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER |
| aoqi@0 | 75 | BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| aoqi@0 | 76 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| aoqi@0 | 77 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| aoqi@0 | 78 | BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| aoqi@0 | 79 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| aoqi@0 | 80 | OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| aoqi@0 | 81 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| aoqi@0 | 82 | */ |
| aoqi@0 | 83 | |
| aoqi@0 | 84 | package jdk.internal.dynalink.support; |
| aoqi@0 | 85 | |
| aoqi@0 | 86 | import java.security.AccessControlContext; |
| aoqi@0 | 87 | import java.security.Permissions; |
| aoqi@0 | 88 | import java.security.ProtectionDomain; |
| aoqi@0 | 89 | |
| aoqi@0 | 90 | /** |
| aoqi@0 | 91 | * This class exposes a canonical {@link AccessControlContext} with a single {@link RuntimePermission} for |
| aoqi@0 | 92 | * {@code "getClassLoader"} permission that is used by other parts of the code to narrow their set of permissions when |
| aoqi@0 | 93 | * they're retrieving class loaders in privileged blocks. |
| aoqi@0 | 94 | */ |
| aoqi@0 | 95 | public class ClassLoaderGetterContextProvider { |
| aoqi@0 | 96 | /** |
| aoqi@0 | 97 | * Canonical instance of {@link AccessControlContext} with a single {@link RuntimePermission} for |
| aoqi@0 | 98 | * {@code "getClassLoader"} permission. |
| aoqi@0 | 99 | */ |
| aoqi@0 | 100 | public static final AccessControlContext GET_CLASS_LOADER_CONTEXT; |
| aoqi@0 | 101 | static { |
| aoqi@0 | 102 | final Permissions perms = new Permissions(); |
| aoqi@0 | 103 | perms.add(new RuntimePermission("getClassLoader")); |
| aoqi@0 | 104 | GET_CLASS_LOADER_CONTEXT = new AccessControlContext( |
| aoqi@0 | 105 | new ProtectionDomain[] { new ProtectionDomain(null, perms) }); |
| aoqi@0 | 106 | } |
| aoqi@0 | 107 | } |
