ServiceDiscovery.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, either 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.xmpp.impl;

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

import tigase.db.NonAuthUserRepository;

import tigase.disco.XMPPServiceCollector;

import tigase.server.Command;
import tigase.server.Packet;

import tigase.xml.Element;

import tigase.xmpp.Authorization;
import tigase.xmpp.JID;
import tigase.xmpp.PacketErrorTypeException;
import tigase.xmpp.XMPPProcessorAbstract;
import tigase.xmpp.XMPPResourceConnection;

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

import java.util.Map;
import java.util.Queue;
import java.util.logging.Logger;

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

/**
 * Implementation of JEP-030.
 *
 *
 * Created: Mon Mar 27 20:45:36 2006
 *
 * @author <a href="mailto:artur.hefczyc@tigase.org">Artur Hefczyc</a>
 * @version $Rev$
 */
public class ServiceDiscovery extends XMPPProcessorAbstract {
	private static final Logger log = Logger.getLogger("tigase.xmpp.impl.ServiceDiscovery");
	private static final String ID = "disco";
	private static final String[] ELEMENTS = { "query", "query", "query" };
	private static final String[] XMLNSS = { XMPPServiceCollector.INFO_XMLNS,
			XMPPServiceCollector.ITEMS_XMLNS, Command.XMLNS };
	private static final Element[] DISCO_FEATURES = {
		new Element("feature", new String[] { "var" },
			new String[] { XMPPServiceCollector.INFO_XMLNS }),
		new Element("feature", new String[] { "var" },
			new String[] { XMPPServiceCollector.ITEMS_XMLNS }) };

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

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

	/**
	 * Method description
	 *
	 *
	 * @param connectionId
	 * @param packet
	 * @param session
	 * @param repo
	 * @param results
	 * @param settings
	 *
	 * @throws PacketErrorTypeException
	 */
	@Override
	public void processFromUserToServerPacket(JID connectionId, Packet packet,
			XMPPResourceConnection session, NonAuthUserRepository repo, Queue<Packet> results,
				Map<String, Object> settings)
			throws PacketErrorTypeException {

		// Handled elsewhere (in MessageRouter)
		results.offer(packet.copyElementOnly());
	}

	/**
	 * Method description
	 *
	 *
	 * @param packet
	 * @param repo
	 * @param results
	 * @param settings
	 *
	 * @throws PacketErrorTypeException
	 */
	@Override
	public void processNullSessionPacket(Packet packet, NonAuthUserRepository repo,
			Queue<Packet> results, Map<String, Object> settings)
			throws PacketErrorTypeException {
		results.offer(Authorization.RECIPIENT_UNAVAILABLE.getResponseMessage(packet,
				"The target is unavailable at this time.", true));
	}

	/**
	 * Method description
	 *
	 *
	 * @param packet
	 * @param session
	 * @param repo
	 * @param results
	 * @param settings
	 *
	 * @throws PacketErrorTypeException
	 */
	@Override
	public void processServerSessionPacket(Packet packet, XMPPResourceConnection session,
			NonAuthUserRepository repo, Queue<Packet> results, Map<String, Object> settings)
			throws PacketErrorTypeException {

		// Handled elsewhere (in MessageRouter)
	}

	/**
	 * Method description
	 *
	 *
	 * @param session
	 *
	 * @return
	 */
	@Override
	public Element[] supDiscoFeatures(final XMPPResourceConnection session) {
		return DISCO_FEATURES;
	}

	/**
	 * Method description
	 *
	 *
	 * @return
	 */
	@Override
	public String[] supElements() {
		return ELEMENTS;
	}

	/**
	 * Method description
	 *
	 *
	 * @return
	 */
	@Override
	public String[] supNamespaces() {
		return XMLNSS;
	}
}    // ServiceDiscovery


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