Glassfish example source code file (ExtendedConfigFile.java)

This example Glassfish source code file (ExtendedConfigFile.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

class, class, classloader, exception, extendedconfigfile, extendedconfigfile, hashmap, log, logging, net, network, object, override, privilegedexceptionaction, security, set, set, string, string, util

The Glassfish ExtendedConfigFile.java source code

/*
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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
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 *
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package com.sun.jaspic.config.jaas;

import com.sun.jaspic.config.helper.JASPICLogManager;
import com.sun.security.auth.login.ConfigFile;
import java.lang.reflect.Field;
import java.net.URI;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.HashMap;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.security.auth.login.AppConfigurationEntry;

/**
 *
 * @author Ron Monzillo
 */
public class ExtendedConfigFile extends ConfigFile {

    private static final Logger logger =
            Logger.getLogger(JASPICLogManager.JASPIC_LOGGER, JASPICLogManager.RES_BUNDLE);
    //may be more than one delegate for a given jaas config file

    public ExtendedConfigFile() {
    }

    /**
     *
     * @param uri
     */
    public ExtendedConfigFile(URI uri) {
        super(uri);
    }

    /**
     * The ExtendedConfigFile subclass was created because the
     * Configuration interface does not provide a way to do what this
     * method does; i.e. get all the app names from the config.
     * @param authModuleClass an Array of Class objects or null. When this
     * parameter is not null, the appnames are filtered by removing all names
     * that are not associated via an AppConfigurationEntry with at least
     * one LoginModule that implements an authModuleClass.
     * @return String[] containing all the AppNames appearing in the config file.
     * @throws SecurityException
     */
    public String[] getAppNames(final Class[] authModuleClass) {

        final Set<String> nameSet;
        try {
            nameSet = (Set<String>) AccessController.doPrivileged(
                    new PrivilegedExceptionAction() {

                        @Override
                        public Object run() throws Exception {
                            HashMap map;
                            Field field = ConfigFile.class.getDeclaredField("configuration");
                            field.setAccessible(true);
                            map = (HashMap) field.get(ExtendedConfigFile.this);
                            return (Set<String>) map.keySet();
                        }
                    });

        } catch (PrivilegedActionException pae) {
            throw new SecurityException(pae.getCause());
        }

        // remove any modules that don't implement specified interface
        if (authModuleClass != null) {
            try {
                AccessController.doPrivileged(new PrivilegedExceptionAction() {

                    @Override
                    public Object run() throws Exception {
                        ClassLoader loader =
                                Thread.currentThread().getContextClassLoader();
                        String[] names = nameSet.toArray(new String[0]);
                        for (String id : names) {
                            boolean hasAuthModule = false;
                            AppConfigurationEntry[] entry = getAppConfigurationEntry(id);
                            for (int i = 0; i
                                    < entry.length && !hasAuthModule; i++) {
                                String clazz = entry[i].getLoginModuleName();
                                try {
                                    Class c = Class.forName(clazz, true, loader);
                                    for (Class required : authModuleClass) {
                                        if (required.isAssignableFrom(c)) {
                                            hasAuthModule = true;
                                            break;
                                        }
                                    }
                                } catch (Throwable t) {
                                    String msg = "skipping unloadable class: "
                                            + clazz + " of entry: " + id;
                                    logger.log(Level.WARNING, msg);
                                }
                            }
                            if (!hasAuthModule) {
                                nameSet.remove(id);
                            }
                        }
                        return null;
                    }
                });
            } catch (java.security.PrivilegedActionException pae) {
                throw new SecurityException(pae.getCause());
            }

        }
        return nameSet.toArray(new String[0]);
    }
}