1/*
2 * Copyright (c) 2004, 2017, 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
26package com.sun.jdi;
27
28/**
29 * The {@code JDIPermission} class represents access rights to
30 * the {@code VirtualMachineManager}.  This is the permission
31 * which the SecurityManager will check when code that is running with
32 * a SecurityManager requests access to the VirtualMachineManager, as
33 * defined in the Java Debug Interface (JDI) for the Java platform.
34 * <P>
35 * A {@code JDIPermission} object contains a name (also referred
36 * to as a "target name") but no actions list; you either have the
37 * named permission or you don't.
38 * <P>
39 * The following table provides a summary description of what the
40 * permission allows, and discusses the risks of granting code the
41 * permission.
42 *
43 * <table class="plain">
44 * <caption style="display:none">Table shows permission target name, what the
45 * permission allows, and associated risks</caption>
46 * <tr>
47 * <th>Permission Target Name</th>
48 * <th>What the Permission Allows</th>
49 * <th>Risks of Allowing this Permission</th>
50 * </tr>
51 *
52 * <tr>
53 *   <td>virtualMachineManager</td>
54 *   <td>Ability to inspect and modify the JDI objects in the
55 *   {@code VirtualMachineManager}
56 *   </td>
57 *   <td>This allows an attacker to control the
58 *   {@code VirtualMachineManager} and cause the system to
59 *   misbehave.
60 *   </td>
61 * </tr>
62 *
63 * </table>
64 *
65 * <p>
66 * Programmers do not normally create JDIPermission objects directly.
67 * Instead they are created by the security policy code based on reading
68 * the security policy file.
69 *
70 * @author  Tim Bell
71 * @since   1.5
72 *
73 * @see com.sun.jdi.Bootstrap
74 * @see java.security.BasicPermission
75 * @see java.security.Permission
76 * @see java.security.Permissions
77 * @see java.security.PermissionCollection
78 * @see java.lang.SecurityManager
79 *
80 */
81
82public final class JDIPermission extends java.security.BasicPermission {
83    private static final long serialVersionUID = -6988461416938786271L;
84    /**
85     * The {@code JDIPermission} class represents access rights to the
86     * {@code VirtualMachineManager}
87     * @param name Permission name. Must be "virtualMachineManager".
88     * @throws IllegalArgumentException if the name argument is invalid.
89     */
90    public JDIPermission(String name) {
91        super(name);
92        if (!name.equals("virtualMachineManager")) {
93            throw new IllegalArgumentException("name: " + name);
94        }
95    }
96
97    /**
98     * Constructs a new JDIPermission object.
99     *
100     * @param name Permission name. Must be "virtualMachineManager".
101     * @param actions Must be either null or the empty string.
102     * @throws IllegalArgumentException if arguments are invalid.
103     */
104    public JDIPermission(String name, String actions)
105        throws IllegalArgumentException {
106        super(name);
107        if (!name.equals("virtualMachineManager")) {
108            throw new IllegalArgumentException("name: " + name);
109        }
110        if (actions != null && actions.length() > 0) {
111            throw new IllegalArgumentException("actions: " + actions);
112        }
113    }
114}
115