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 * Copyright (c) 2003, 2008, 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

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 */

package java.lang.management;

/**

 * The permission which the SecurityManager will check when code

 * that is running with a SecurityManager calls methods defined

 * in the management interface for the Java platform.

 * <P>

 * The following table

 * provides a summary description of what the permission allows,

 * and discusses the risks of granting code the permission.

 * <P>

 *

 * <table border=1 cellpadding=5 summary="Table shows permission target name, wh

at the permission allows, and associated risks">

 * <tr>

 * <th>Permission Target Name</th>

 * <th>What the Permission Allows</th>

 * <th>Risks of Allowing this Permission</th>

 * </tr>

 *

 * <tr>

 *   <td>control</td>

 *   <td>Ability to control the runtime characteristics of the Java virtual

 *       machine, for example, setting the -verbose:gc and -verbose:class flag,

 *       setting the threshold of a memory pool, and enabling and disabling

 *       the thread contention monitoring support.

 *   </td>

 *   <td>This allows an attacker to control the runtime characteristics

 *       of the Java virtual machine and cause the system to misbehave.

 *   </td>

 * </tr>

 * <tr>

 *   <td>monitor</td>

 *   <td>Ability to retrieve runtime information about

 *       the Java virtual machine such as thread

 *       stack trace, a list of all loaded class names, and input arguments

 *       to the Java virtual machine.</td>

 *   <td>This allows malicious code to monitor runtime information and

 *       uncover vulnerabilities.</td>

 * </tr>

 *

 * </table>

 *

 * <p>

 * Programmers do not normally create ManagementPermission objects directly.

 * Instead they are created by the security policy code based on reading

 * the security policy file.

 *

 * @author  Mandy Chung

 * @since   1.5

 *

 * @see java.security.BasicPermission

 * @see java.security.Permission

 * @see java.security.Permissions

 * @see java.security.PermissionCollection

 * @see java.lang.SecurityManager

 *

 */

public final class ManagementPermission extends java.security.BasicPermission {

    private static final long serialVersionUID = 1897496590799378737L;

    /**

     * Constructs a ManagementPermission with the specified name.

     *

     * @param name Permission name. Must be either "monitor" or "control".

     *

     * @throws NullPointerException if <code>name</code> is <code>null</code>.

     * @throws IllegalArgumentException if <code>name</code> is empty or invalid.

     */

    public ManagementPermission(String name) {

        super(name);

        if (!name.equals("control") && !name.equals("monitor")) {

            throw new IllegalArgumentException("name: " + name);

        }

    }

    /**

     * Constructs a new ManagementPermission object.

     *

     * @param name Permission name. Must be either "monitor" or "control".

     * @param actions Must be either null or the empty string.

     *

     * @throws NullPointerException if <code>name</code> is <code>null</code>.

     * @throws IllegalArgumentException if <code>name</code> is empty or

     * if arguments are invalid.

     */

    public ManagementPermission(String name, String actions)

        throws IllegalArgumentException {

        super(name);

        if (!name.equals("control") && !name.equals("monitor")) {

            throw new IllegalArgumentException("name: " + name);

        }

        if (actions != null && actions.length() > 0) {

            throw new IllegalArgumentException("actions: " + actions);

        }

    }

}