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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2008, 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.lang.management; | ||
| 27 | |||
| 28 | /** | ||
| 29 | * The permission which the SecurityManager will check when code | ||
| 30 | * that is running with a SecurityManager calls methods defined | ||
| 31 | * in the management interface for the Java platform. | ||
| 32 | * <P> | ||
| 33 | * The following table | ||
| 34 | * provides a summary description of what the permission allows, | ||
| 35 | * and discusses the risks of granting code the permission. | ||
| 36 | * <P> | ||
| 37 | * | ||
| 38 | * <table border=1 cellpadding=5 summary="Table shows permission target name, wh | ||
| 39 | at the permission allows, and associated risks"> | ||
| 40 | * <tr> | ||
| 41 | * <th>Permission Target Name</th> | ||
| 42 | * <th>What the Permission Allows</th> | ||
| 43 | * <th>Risks of Allowing this Permission</th> | ||
| 44 | * </tr> | ||
| 45 | * | ||
| 46 | * <tr> | ||
| 47 | * <td>control</td> | ||
| 48 | * <td>Ability to control the runtime characteristics of the Java virtual | ||
| 49 | * machine, for example, setting the -verbose:gc and -verbose:class flag, | ||
| 50 | * setting the threshold of a memory pool, and enabling and disabling | ||
| 51 | * the thread contention monitoring support. | ||
| 52 | * </td> | ||
| 53 | * <td>This allows an attacker to control the runtime characteristics | ||
| 54 | * of the Java virtual machine and cause the system to misbehave. | ||
| 55 | * </td> | ||
| 56 | * </tr> | ||
| 57 | * <tr> | ||
| 58 | * <td>monitor</td> | ||
| 59 | * <td>Ability to retrieve runtime information about | ||
| 60 | * the Java virtual machine such as thread | ||
| 61 | * stack trace, a list of all loaded class names, and input arguments | ||
| 62 | * to the Java virtual machine.</td> | ||
| 63 | * <td>This allows malicious code to monitor runtime information and | ||
| 64 | * uncover vulnerabilities.</td> | ||
| 65 | * </tr> | ||
| 66 | * | ||
| 67 | * </table> | ||
| 68 | * | ||
| 69 | * <p> | ||
| 70 | * Programmers do not normally create ManagementPermission objects directly. | ||
| 71 | * Instead they are created by the security policy code based on reading | ||
| 72 | * the security policy file. | ||
| 73 | * | ||
| 74 | * @author Mandy Chung | ||
| 75 | * @since 1.5 | ||
| 76 | * | ||
| 77 | * @see java.security.BasicPermission | ||
| 78 | * @see java.security.Permission | ||
| 79 | * @see java.security.Permissions | ||
| 80 | * @see java.security.PermissionCollection | ||
| 81 | * @see java.lang.SecurityManager | ||
| 82 | * | ||
| 83 | */ | ||
| 84 | |||
| 85 | public final class ManagementPermission extends java.security.BasicPermission { | ||
| 86 | private static final long serialVersionUID = 1897496590799378737L; | ||
| 87 | |||
| 88 | /** | ||
| 89 | * Constructs a ManagementPermission with the specified name. | ||
| 90 | * | ||
| 91 | * @param name Permission name. Must be either "monitor" or "control". | ||
| 92 | * | ||
| 93 | * @throws NullPointerException if <code>name</code> is <code>null</code>. | ||
| 94 | * @throws IllegalArgumentException if <code>name</code> is empty or invalid. | ||
| 95 | */ | ||
| 96 | public ManagementPermission(String name) { | ||
| 97 | super(name); | ||
| 98 | if (!name.equals("control") && !name.equals("monitor")) { | ||
| 99 | throw new IllegalArgumentException("name: " + name); | ||
| 100 | } | ||
| 101 | } | ||
| 102 | |||
| 103 | /** | ||
| 104 | * Constructs a new ManagementPermission object. | ||
| 105 | * | ||
| 106 | * @param name Permission name. Must be either "monitor" or "control". | ||
| 107 | * @param actions Must be either null or the empty string. | ||
| 108 | * | ||
| 109 | * @throws NullPointerException if <code>name</code> is <code>null</code>. | ||
| 110 | * @throws IllegalArgumentException if <code>name</code> is empty or | ||
| 111 | * if arguments are invalid. | ||
| 112 | */ | ||
| 113 | public ManagementPermission(String name, String actions) | ||
| 114 | throws IllegalArgumentException { | ||
| 115 | super(name); | ||
| 116 | if (!name.equals("control") && !name.equals("monitor")) { | ||
| 117 | throw new IllegalArgumentException("name: " + name); | ||
| 118 | } | ||
| 119 | if (actions != null && actions.length() > 0) { | ||
| 120 | throw new IllegalArgumentException("actions: " + actions); | ||
| 121 | } | ||
| 122 | } | ||
| 123 | } | ||