/*

 * 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

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 */

package com.sun.jdi;

/**

 * The <code>JDIPermission</code> class represents access rights to

 * the <code>VirtualMachineManager</code>.  This is the permission

 * which the SecurityManager will check when code that is running with

 * a SecurityManager requests access to the VirtualMachineManager, as

 * defined in the Java Debug Interface (JDI) for the Java platform.

 * <P>

 * A <code>JDIPermission</code> object contains a name (also referred

 * to as a "target name") but no actions list; you either have the

 * named permission or you don't.

 * <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, what 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>virtualMachineManager</td>

 *   <td>Ability to inspect and modify the JDI objects in the

 *   <code>VirtualMachineManager</code>

 *   </td>

 *   <td>This allows an attacker to control the

 *   <code>VirtualMachineManager</code> and cause the system to

 *   misbehave.

 *   </td>

 * </tr>

 *

 * </table>

 *

 * <p>

 * Programmers do not normally create JDIPermission objects directly.

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

 * the security policy file.

 *

 * @author  Tim Bell

 * @since   1.5

 *

 * @see com.sun.jdi.Bootstrap

 * @see java.security.BasicPermission

 * @see java.security.Permission

 * @see java.security.Permissions

 * @see java.security.PermissionCollection

 * @see java.lang.SecurityManager

 *

 */

public final class JDIPermission extends java.security.BasicPermission {

    private static final long serialVersionUID = -6988461416938786271L;

    /**

     * The <code>JDIPermission</code> class represents access rights to the

     * <code>VirtualMachineManager</code>

     * @param name Permission name. Must be "virtualMachineManager".

     * @throws IllegalArgumentException if the name argument is invalid.

     */

    public JDIPermission(String name) {

        super(name);

        if (!name.equals("virtualMachineManager")) {

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

        }

    }

    /**

     * Constructs a new JDIPermission object.

     *

     * @param name Permission name. Must be "virtualMachineManager".

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

     * @throws IllegalArgumentException if arguments are invalid.

     */

    public JDIPermission(String name, String actions)

        throws IllegalArgumentException {

        super(name);

        if (!name.equals("virtualMachineManager")) {

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

        }

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

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

        }

    }

}