Showing the changes to java/pkg/java/nio/file/LinkPermission.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,107 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package java.nio.file; | |
| 27 | + | |
| 28 | +import java.security.BasicPermission; | |
| 29 | + | |
| 30 | +/** | |
| 31 | + * The {@code Permission} class for link creation operations. | |
| 32 | + * | |
| 33 | + * <p> The following table provides a summary description of what the permission | |
| 34 | + * allows, and discusses the risks of granting code the permission. | |
| 35 | + * | |
| 36 | + * <table border=1 cellpadding=5 | |
| 37 | + * summary="Table shows permission target name, what the permission allows, and associated risks"> | |
| 38 | + * <tr> | |
| 39 | + * <th>Permission Target Name</th> | |
| 40 | + * <th>What the Permission Allows</th> | |
| 41 | + * <th>Risks of Allowing this Permission</th> | |
| 42 | + * </tr> | |
| 43 | + * <tr> | |
| 44 | + * <td>hard</td> | |
| 45 | + * <td> Ability to add an existing file to a directory. This is sometimes | |
| 46 | + * known as creating a link, or hard link. </td> | |
| 47 | + * <td> Extreme care should be taken when granting this permission. It allows | |
| 48 | + * linking to any file or directory in the file system thus allowing the | |
| 49 | + * attacker access to all files. </td> | |
| 50 | + * </tr> | |
| 51 | + * <tr> | |
| 52 | + * <td>symbolic</td> | |
| 53 | + * <td> Ability to create symbolic links. </td> | |
| 54 | + * <td> Extreme care should be taken when granting this permission. It allows | |
| 55 | + * linking to any file or directory in the file system thus allowing the | |
| 56 | + * attacker to access to all files. </td> | |
| 57 | + * </tr> | |
| 58 | + * </table> | |
| 59 | + * | |
| 60 | + * @since 1.7 | |
| 61 | + * | |
| 62 | + * @see Files#createLink | |
| 63 | + * @see Files#createSymbolicLink | |
| 64 | + */ | |
| 65 | +public final class LinkPermission extends BasicPermission { | |
| 66 | + static final long serialVersionUID = -1441492453772213220L; | |
| 67 | + | |
| 68 | + private void checkName(String name) { | |
| 69 | + if (!name.equals("hard") && !name.equals("symbolic")) { | |
| 70 | + throw new IllegalArgumentException("name: " + name); | |
| 71 | + } | |
| 72 | + } | |
| 73 | + | |
| 74 | + /** | |
| 75 | + * Constructs a {@code LinkPermission} with the specified name. | |
| 76 | + * | |
| 77 | + * @param name | |
| 78 | + * the name of the permission. It must be "hard" or "symbolic". | |
| 79 | + * | |
| 80 | + * @throws IllegalArgumentException | |
| 81 | + * if name is empty or invalid | |
| 82 | + */ | |
| 83 | + public LinkPermission(String name) { | |
| 84 | + super(name); | |
| 85 | + checkName(name); | |
| 86 | + } | |
| 87 | + | |
| 88 | + /** | |
| 89 | + * Constructs a {@code LinkPermission} with the specified name. | |
| 90 | + * | |
| 91 | + * @param name | |
| 92 | + * the name of the permission; must be "hard" or "symbolic". | |
| 93 | + * @param actions | |
| 94 | + * the actions for the permission; must be the empty string or | |
| 95 | + * {@code null} | |
| 96 | + * | |
| 97 | + * @throws IllegalArgumentException | |
| 98 | + * if name is empty or invalid, or actions is a non-empty string | |
| 99 | + */ | |
| 100 | + public LinkPermission(String name, String actions) { | |
| 101 | + super(name); | |
| 102 | + checkName(name); | |
| 103 | + if (actions != null && actions.length() > 0) { | |
| 104 | + throw new IllegalArgumentException("actions: " + actions); | |
| 105 | + } | |
| 106 | + } | |
| 107 | +} | |