1/*
2 * Copyright (c) 2003, 2015, 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 sun.management;
27
28import java.lang.management.ManagementPermission;
29import java.util.List;
30import javax.management.ObjectName;
31import javax.management.MalformedObjectNameException;
32
33
34public class Util {
35    private Util() {}  // there are no instances of this class
36
37    static RuntimeException newException(Exception e) {
38        throw new RuntimeException(e);
39    }
40
41    private static final String[] EMPTY_STRING_ARRAY = new String[0];
42    static String[] toStringArray(List<String> list) {
43        return list.toArray(EMPTY_STRING_ARRAY);
44    }
45
46    public static ObjectName newObjectName(String domainAndType, String name) {
47        return newObjectName(domainAndType + ",name=" + name);
48    }
49
50    public static ObjectName newObjectName(String name) {
51        try {
52            return ObjectName.getInstance(name);
53        } catch (MalformedObjectNameException e) {
54            throw new IllegalArgumentException(e);
55        }
56    }
57
58    private static ManagementPermission monitorPermission =
59        new ManagementPermission("monitor");
60    private static ManagementPermission controlPermission =
61        new ManagementPermission("control");
62
63    /**
64     * Check that the current context is trusted to perform monitoring
65     * or management.
66     * <p>
67     * If the check fails we throw a SecurityException, otherwise
68     * we return normally.
69     *
70     * @exception  SecurityException  if a security manager exists and if
71     *             the caller does not have ManagementPermission("control").
72     */
73    static void checkAccess(ManagementPermission p)
74         throws SecurityException {
75        SecurityManager sm = System.getSecurityManager();
76        if (sm != null) {
77            sm.checkPermission(p);
78        }
79    }
80
81    static void checkMonitorAccess() throws SecurityException {
82        checkAccess(monitorPermission);
83    }
84    public static void checkControlAccess() throws SecurityException {
85        checkAccess(controlPermission);
86    }
87}
88