BindProcessor.java

/*
 * Tigase Jabber/XMPP Server
 * Copyright (C) 2004-2012 "Artur Hefczyc" <artur.hefczyc@tigase.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. Look for COPYING file in the top folder.
 * If not, see http://www.gnu.org/licenses/.
 *
 * $Rev$
 * Last modified by $Author$
 * $Date$
 */

package tigase.server.ext.handlers;

//~--- non-JDK imports --------------------------------------------------------

import tigase.server.Packet;
import tigase.server.ext.ComponentConnection;
import tigase.server.ext.ComponentIOService;
import tigase.server.ext.ComponentProtocolHandler;
import tigase.server.ext.ExtProcessor;

import tigase.xml.Element;

import tigase.xmpp.StanzaType;

import static tigase.server.ext.ComponentProtocolHandler.*;

//~--- JDK imports ------------------------------------------------------------

import java.util.Arrays;
import java.util.List;
import java.util.Queue;
import java.util.logging.Logger;

//~--- classes ----------------------------------------------------------------

/**
 * Created: Nov 2, 2009 2:37:18 PM
 *
 * @author <a href="mailto:artur.hefczyc@tigase.org">Artur Hefczyc</a>
 * @version $Rev$
 */
public class BindProcessor implements ExtProcessor {

	/**
	 * Variable <code>log</code> is a class logger.
	 */
	private static final Logger log = Logger.getLogger(BindProcessor.class.getName());
	private static final String EL_NAME = "bind";
	private static final String XMLNS = "urn:xmpp:component:0";
	private static final String ID = EL_NAME;
	private static final Element FEATURES = new Element(EL_NAME, new String[] { "xmlns" },
		new String[] { XMLNS });

	//~--- get methods ----------------------------------------------------------

	/**
	 * Method description
	 *
	 *
	 * @return
	 */
	@Override
	public String getId() {
		return ID;
	}

	/**
	 * Method description
	 *
	 *
	 * @param serv
	 * @param handler
	 *
	 * @return
	 */
	@Override
	public List<Element> getStreamFeatures(ComponentIOService serv,
			ComponentProtocolHandler handler) {
		return Arrays.asList(FEATURES);
	}

	//~--- methods --------------------------------------------------------------

	/**
	 * Method description
	 *
	 *
	 * @param p
	 * @param serv
	 * @param handler
	 * @param results
	 *
	 * @return
	 */
	@Override
	public boolean process(Packet p, ComponentIOService serv, ComponentProtocolHandler handler,
			Queue<Packet> results) {
		if (p.isXMLNS("/iq/bind", XMLNS)) {
			if ((p.getType() == StanzaType.set) && serv.isAuthenticated()) {
				String hostname = p.getElemCData("/iq/bind/hostname");

				handler.bindHostname(hostname, serv);
				results.offer(Packet.packetInstance(okResult(p.getElement()), null, null));
			} else {
				log.fine("Ok result received: " + p.toString());
			}

			return true;
		}

		if (p.isXMLNS("/iq/unbind", XMLNS)) {
			if ((p.getType() == StanzaType.set) && serv.isAuthenticated()) {
				String hostname = p.getElemCData("/iq/unbind/hostname");

				handler.unbindHostname(hostname, serv);
				results.offer(Packet.packetInstance(okResult(p.getElement()), null, null));
			} else {
				log.fine("Ok result received: " + p.toString());
			}

			return true;
		}

		return false;
	}

	/**
	 * Method description
	 *
	 *
	 * @param p
	 * @param serv
	 * @param handler
	 * @param results
	 */
	@Override
	public void startProcessing(Packet p, ComponentIOService serv,
			ComponentProtocolHandler handler, Queue<Packet> results) {
		String[] hostnames = (String[]) serv.getSessionData().get(EXTCOMP_BIND_HOSTNAMES_PROP_KEY);

		if (hostnames != null) {
			for (String host : hostnames) {
				if ( !host.isEmpty()) {
					Packet bind_p = Packet.packetInstance(newBindElement(host, handler), null, null);

					log.info("Generating hostname bind packet: " + bind_p.toString());
					results.offer(bind_p);
				} else {
					log.warning("Empty hostname set for bind...");
				}
			}
		}
	}

	private Element newBindElement(String host, ComponentProtocolHandler handler) {
		Element result = new Element("iq", new String[] { "type", "id" }, new String[] { "set",
				handler.newPacketId("bind") });
		Element bind = new Element(EL_NAME, new Element[] { new Element("hostname", host) },
			new String[] { "xmlns" }, new String[] { XMLNS });

		result.addChild(bind);

		return result;
	}

	private Element okResult(Element elem) {
		Element result = elem.clone();

		result.setAttribute("type", "result");

		return result;
	}
}


//~ Formatted in Sun Code Convention


//~ Formatted by Jindent --- http://www.jindent.com