HandlerUtil.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.picketlink.identity.federation.core.saml.v2.util;

import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.picketlink.identity.federation.PicketLinkLogger;
import org.picketlink.identity.federation.PicketLinkLoggerFactory;
import org.picketlink.identity.federation.core.config.KeyValueType;
import org.picketlink.identity.federation.core.exceptions.ConfigurationException;
import org.picketlink.identity.federation.core.handler.config.Handler;
import org.picketlink.identity.federation.core.handler.config.Handlers;
import org.picketlink.identity.federation.core.saml.v2.impl.DefaultSAML2HandlerConfig;
import org.picketlink.identity.federation.core.saml.v2.interfaces.SAML2Handler;
import org.picketlink.identity.federation.core.saml.v2.interfaces.SAML2HandlerConfig;

/**
 * Deals with SAML2 Handlers
 *
 * @author Anil.Saldhana@redhat.com
 * @since Oct 7, 2009
 */
public class HandlerUtil {
    
    private static final PicketLinkLogger logger = PicketLinkLoggerFactory.getLogger();
    
    public static Set<SAML2Handler> getHandlers(Handlers handlers) throws ConfigurationException {
        if (handlers == null)
            throw logger.nullArgumentError("handlers");
        List<Handler> handlerList = handlers.getHandler();

        Set<SAML2Handler> handlerSet = new LinkedHashSet<SAML2Handler>();

        for (Handler handler : handlerList) {
            String clazzName = handler.getClazz();

            Class<?> clazz;
            try {
                clazz = SecurityActions.loadClass(HandlerUtil.class, clazzName);
                if (clazz == null)
                    throw new RuntimeException(logger.classNotLoadedError(clazzName));
                SAML2Handler samlhandler = (SAML2Handler) clazz.newInstance();
                List<KeyValueType> options = handler.getOption();

                Map<String, Object> mapOptions = new HashMap<String, Object>();

                for (KeyValueType kvtype : options) {
                    mapOptions.put(kvtype.getKey(), kvtype.getValue());
                }
                SAML2HandlerConfig handlerConfig = new DefaultSAML2HandlerConfig();
                handlerConfig.set(mapOptions);

                samlhandler.initHandlerConfig(handlerConfig);

                handlerSet.add(samlhandler);
            } catch (InstantiationException e) {
                throw logger.configurationError(e);
            } catch (IllegalAccessException e) {
                throw logger.configurationError(e);
            }
        }
        return handlerSet;
    }
}