Glassfish example source code file (AuthConfigProviderHelper.java)

This example Glassfish source code file (AuthConfigProviderHelper.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

all_layers, authconfigprovider, authconfigproviderhelper, authexception, authexception, callbackhandler, callbackhandler, class, hashset, map, registrationcontext, registrationcontext, string, string, util

The Glassfish AuthConfigProviderHelper.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.
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 * 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
 * file that accompanied this code.
 *
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package com.sun.jaspic.config.helper;

import com.sun.jaspic.config.delegate.MessagePolicyDelegate;
import java.util.HashSet;
import java.util.Map;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.message.AuthException;
import javax.security.auth.message.config.AuthConfigFactory;
import javax.security.auth.message.config.AuthConfigFactory.RegistrationContext;
import javax.security.auth.message.config.AuthConfigProvider;
import javax.security.auth.message.config.ClientAuthConfig;
import javax.security.auth.message.config.ServerAuthConfig;

/**
 *
 * @author Ron Monzillo
 */
public abstract class AuthConfigProviderHelper implements AuthConfigProvider {

    public static final String LAYER_NAME_KEY = "message.layer";
    public static final String ALL_LAYERS = "*";
    public static final String LOGGER_NAME_KEY = "logger.name";
    public static final String AUTH_MODULE_KEY = "auth.module.type";
    public static final String SERVER_AUTH_MODULE = "server.auth.module";
    public static final String CLIENT_AUTH_MODULE = "client.auth.module";
    private ReentrantReadWriteLock instanceReadWriteLock = new ReentrantReadWriteLock();
    private Lock rLock = instanceReadWriteLock.readLock();
    private Lock wLock = instanceReadWriteLock.writeLock();
    HashSet<String> selfRegistered;
    EpochCarrier epochCarrier;

    protected AuthConfigProviderHelper() {
        selfRegistered = new HashSet<String>();
        epochCarrier = new EpochCarrier();
    }

    protected final String getProperty(String key, String defaultValue) {
        String rvalue = defaultValue;
        Map<String, ?> properties = getProperties();
        if (properties != null && properties.containsKey(key)) {
            rvalue = (String) properties.get(key);
        }
        return rvalue;
    }

    protected String getLayer() {
        return getProperty(LAYER_NAME_KEY, ALL_LAYERS);
    }

    protected Class[] getModuleTypes() {
        Class[] rvalue = new Class[]{
            javax.security.auth.message.module.ServerAuthModule.class,
            javax.security.auth.message.module.ClientAuthModule.class
        };
        Map<String, ?> properties = getProperties();
        if (properties.containsKey(AUTH_MODULE_KEY)) {
            String keyValue = (String) properties.get(AUTH_MODULE_KEY);
            if (SERVER_AUTH_MODULE.equals(keyValue)) {
                rvalue = new Class[]{
                            javax.security.auth.message.module.ServerAuthModule.class
                        };
            } else if (CLIENT_AUTH_MODULE.equals(keyValue)) {
                rvalue = new Class[]{
                            javax.security.auth.message.module.ClientAuthModule.class
                        };
            }
        }
        return rvalue;
    }

    protected void oldSelfRegister() {
        if (getFactory() != null) {
            selfRegistered.clear();
            RegistrationContext[] contexts = getSelfRegistrationContexts();
            for (RegistrationContext r : contexts) {
                String id = getFactory().registerConfigProvider(this,
                        r.getMessageLayer(), r.getAppContext(),
                        r.getDescription());
                selfRegistered.add(id);
            }
        }
    }

    protected void selfRegister() {
        if (getFactory() != null) {
            wLock.lock();
            try {
                RegistrationContext[] contexts = getSelfRegistrationContexts();
                if (!selfRegistered.isEmpty()) {
                    HashSet<String> toBeUnregistered = new HashSet();
                    // get the current self-registrations
                    String[] regID = getFactory().getRegistrationIDs(this);
                    for (String i : regID) {
                        if (selfRegistered.contains(i)) {
                            RegistrationContext c = getFactory().getRegistrationContext(i);
                            if (c != null && !c.isPersistent()) {
                                toBeUnregistered.add(i);
                            }
                        }
                    }
                    // remove self-registrations that already exist and should continue
                    for (String i : toBeUnregistered) {
                        RegistrationContext r = getFactory().getRegistrationContext(i);
                        for (int j = 0; j < contexts.length; j++) {
                            if (contextsAreEqual(contexts[j], r)) {
                                toBeUnregistered.remove(i);
                                contexts[j] = null;
                            }
                        }
                    }
                    // unregister those that should not continue to exist
                    for (String i : toBeUnregistered) {
                        selfRegistered.remove(i);
                        getFactory().removeRegistration(i);
                    }
                }
                // add new self-segistrations
                for (RegistrationContext r : contexts) {
                    if (r != null) {
                        String id = getFactory().registerConfigProvider(this,
                                r.getMessageLayer(), r.getAppContext(),
                                r.getDescription());
                        selfRegistered.add(id);
                    }
                }
            } finally {
                wLock.unlock();
            }

        }
    }

    protected CallbackHandler getClientCallbackHandler(CallbackHandler cbh)
            throws AuthException {
        if (cbh == null) {
            AuthException ae = new AuthException("AuthConfigProvider does not support null Client Callbackhandler");
            ae.initCause(new UnsupportedOperationException());
            throw ae;
        }
        return cbh;
    }

    protected CallbackHandler getServerCallbackHandler(CallbackHandler cbh) throws
            AuthException {
        if (cbh == null) {
            AuthException ae = new AuthException("AuthConfigProvider does not support null Server Callbackhandler");
            ae.initCause(new UnsupportedOperationException());
            throw ae;
        }
        return cbh;
    }

    public ClientAuthConfig getClientAuthConfig(String layer, String appContext,
            CallbackHandler cbh) throws AuthException {
        return new ClientAuthConfigHelper(getLoggerName(), epochCarrier,
                getAuthContextHelper(appContext, true),
                getMessagePolicyDelegate(appContext),
                layer, appContext,
                getClientCallbackHandler(cbh));
    }

    public ServerAuthConfig getServerAuthConfig(String layer, String appContext,
            CallbackHandler cbh) throws AuthException {
        return new ServerAuthConfigHelper(getLoggerName(), epochCarrier,
                getAuthContextHelper(appContext, true),
                getMessagePolicyDelegate(appContext),
                layer, appContext,
                getServerCallbackHandler(cbh));
    }

    public boolean contextsAreEqual(RegistrationContext a, RegistrationContext b) {
        if (a == null || b == null) {
            return false;
        } else if (a.isPersistent() != b.isPersistent()) {
            return false;
        } else if (!a.getAppContext().equals(b.getAppContext())) {
            return false;
        } else if (!a.getMessageLayer().equals(b.getMessageLayer())) {
            return false;
        } else if (!a.getDescription().equals(b.getDescription())) {
            return false;
        }
        return true;
    }

    /**
     * to be called by refresh on provider subclass, and after subclass impl.
     * has reloaded its underlying configuration system.
     * Note: Spec is silent as to whether self-registrations should be reprocessed.
     */
    public void oldRefresh() {
        if (getFactory() != null) {
            String[] regID = getFactory().getRegistrationIDs(this);
            for (String i : regID) {
                if (selfRegistered.contains(i)) {
                    RegistrationContext c = getFactory().getRegistrationContext(i);
                    if (c != null && !c.isPersistent()) {
                        getFactory().removeRegistration(i);
                    }
                }
            }
        }
        epochCarrier.increment();
        selfRegister();
    }

    public void refresh() {
        epochCarrier.increment();
        selfRegister();
    }

    public String getLoggerName() {
        return getProperty(LOGGER_NAME_KEY, AuthConfigProviderHelper.class.getName());
    }

    public abstract Map<String, ?> getProperties();

    public abstract AuthConfigFactory getFactory();

    public abstract RegistrationContext[] getSelfRegistrationContexts();

    public abstract AuthContextHelper getAuthContextHelper(String appContext,
            boolean returnNullContexts) throws AuthException;

    public abstract MessagePolicyDelegate getMessagePolicyDelegate(String appContext) throws AuthException;
}