/jboss-as-7.1.1.Final/jmx/src/main/java/org/jboss/as/jmx/model/SecurityActions.java

 1/*
 2* JBoss, Home of Professional Open Source.
 3* Copyright 2011, Red Hat Middleware LLC, and individual contributors
 4* as indicated by the @author tags. See the copyright.txt file in the
 5* distribution for a full listing of individual contributors.
 6*
 7* This is free software; you can redistribute it and/or modify it
 8* under the terms of the GNU Lesser General Public License as
 9* published by the Free Software Foundation; either version 2.1 of
10* the License, or (at your option) any later version.
11*
12* This software is distributed in the hope that it will be useful,
13* but WITHOUT ANY WARRANTY; without even the implied warranty of
14* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15* Lesser General Public License for more details.
16*
17* You should have received a copy of the GNU Lesser General Public
18* License along with this software; if not, write to the Free
19* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21*/
22package org.jboss.as.jmx.model;
23
24import java.security.AccessController;
25import java.security.PrivilegedAction;
26
27
28/**
29 *
30 * @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
31 */
32public class SecurityActions {
33    static ClassLoader getClassLoader(final Class<?> clazz) {
34        if (System.getSecurityManager() == null) {
35            return GetClassLoaderAction.NON_PRIVILEGED.getClassLoader(clazz);
36        } else {
37            return GetClassLoaderAction.PRIVILEGED.getClassLoader(clazz);
38        }
39    }
40
41    private interface GetClassLoaderAction {
42
43        ClassLoader getClassLoader(Class<?> clazz);
44
45        GetClassLoaderAction NON_PRIVILEGED = new GetClassLoaderAction() {
46            @Override
47            public ClassLoader getClassLoader(final Class<?> clazz) {
48                return clazz.getClassLoader();
49            }
50        };
51
52        GetClassLoaderAction PRIVILEGED = new GetClassLoaderAction() {
53
54            @Override
55            public ClassLoader getClassLoader(final Class<?> clazz) {
56                return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
57                    public ClassLoader run() {
58                        return clazz.getClassLoader();
59                    }
60                });
61            }
62        };
63    }
64
65}