org.jboss.modules.SecurityActions Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.modules;
import java.security.PrivilegedAction;
import static java.lang.System.getSecurityManager;
import static java.lang.Thread.currentThread;
import static java.security.AccessController.doPrivileged;
/**
* This class must not be public.
*
* @author David M. Lloyd
*/
final class SecurityActions {
private static final PrivilegedAction GET_LOADER_ACTION = new PrivilegedAction() {
public ClassLoader run() {
return currentThread().getContextClassLoader();
}
};
static ClassLoader setContextClassLoader(final ClassLoader classLoader) {
final SecurityManager sm = getSecurityManager();
if (sm != null) {
return doPrivileged(new PrivilegedAction() {
public ClassLoader run() {
try {
return currentThread().getContextClassLoader();
} finally {
currentThread().setContextClassLoader(classLoader);
}
}
});
} else {
try {
return currentThread().getContextClassLoader();
} finally {
currentThread().setContextClassLoader(classLoader);
}
}
}
static ClassLoader getContextClassLoader() {
final SecurityManager sm = getSecurityManager();
if (sm != null) {
return doPrivileged(GET_LOADER_ACTION);
} else {
return currentThread().getContextClassLoader();
}
}
}