001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import com.liferay.portal.kernel.security.pacl.PACLConstants;
018    import com.liferay.portal.kernel.security.pacl.permission.PortalRuntimePermission;
019    
020    import java.net.URL;
021    import java.net.URLClassLoader;
022    
023    import java.security.Permission;
024    
025    /**
026     * @author Brian Wing Shun Chan
027     */
028    public class PortalClassLoaderUtil {
029    
030            public static ClassLoader getClassLoader() {
031                    SecurityManager securityManager = System.getSecurityManager();
032    
033                    if (securityManager != null) {
034                            Permission permission = new RuntimePermission(
035                                    PACLConstants.RUNTIME_PERMISSION_GET_CLASSLOADER.concat(
036                                            StringPool.PERIOD).concat("portal"));
037    
038                            securityManager.checkPermission(permission);
039                    }
040    
041                    return _classLoader;
042            }
043    
044            public static void setClassLoader(ClassLoader classLoader) {
045                    PortalRuntimePermission.checkSetBeanProperty(
046                            PortalClassLoaderUtil.class);
047    
048                    if (ServerDetector.isJOnAS() && JavaDetector.isJDK6()) {
049                            _classLoader = new URLClassLoader(new URL[0], classLoader);
050                    }
051                    else {
052                            _classLoader = classLoader;
053                    }
054            }
055    
056            private static ClassLoader _classLoader;
057    
058    }