/*
* Tigase Jabber/XMPP Server
* Copyright (C) 2004-2007 "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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. Look for COPYING file in the top folder.
* If not, see http://www.gnu.org/licenses/.
*
* $Rev: 1075 $
* Last modified by $Author: kobit $
* $Date: 2008-07-01 23:41:34 +0100 (Tue, 01 Jul 2008) $
*/
package tigase.xmpp.impl;
import java.util.Arrays;
import java.util.Queue;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;
import tigase.server.Command;
import tigase.server.Packet;
import tigase.disco.XMPPServiceCollector;
import tigase.util.JIDUtils;
import tigase.util.ElementUtils;
import tigase.xml.Element;
import tigase.xmpp.Authorization;
import tigase.xmpp.NotAuthorizedException;
import tigase.xmpp.StanzaType;
import tigase.xmpp.XMPPProcessor;
import tigase.xmpp.XMPPProcessorIfc;
import tigase.xmpp.XMPPResourceConnection;
import tigase.xmpp.XMPPException;
import tigase.db.NonAuthUserRepository;
/**
* 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: 1075 $
*/
public abstract class ServiceDiscovery extends XMPPProcessor
implements XMPPProcessorIfc {
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})
};
public String id() { return ID; }
public String[] supElements() { return ELEMENTS; }
public String[] supNamespaces() { return XMLNSS; }
public Element[] supDiscoFeatures(final XMPPResourceConnection session)
{ return DISCO_FEATURES; }
public void process(final Packet packet, final XMPPResourceConnection session,
final NonAuthUserRepository repo, final Queue<Packet> results,
final Map<String, Object> settings)
throws XMPPException {
if (session == null) {
return;
} // end of if (session == null)
try {
// Maybe it is message to admininstrator:
String nodeId = null;
String nodeNick = null;
if (packet.getElemTo() != null) {
nodeId = JIDUtils.getNodeID(packet.getElemTo());
nodeNick = JIDUtils.getNodeNick(packet.getElemTo());
} // end of if (packet.getElemTo() != null)
if (packet.isCommand()) {
if (packet.getCommand() == Command.GETDISCO
&& packet.getType() == StanzaType.result) {
// Send it back to user.
Element query = Command.getData(packet, "query", null);
Element iq =
ElementUtils.createIqQuery(session.getDomain(), session.getJID(),
StanzaType.result, packet.getElemId(), query);
Packet result = new Packet(iq);
result.setTo(session.getConnectionId());
result.getElement().setAttribute("from",
Command.getFieldValue(packet, "jid"));
results.offer(result);
return;
} else {
return;
}
}
// If ID part of user account contains only host name
// and this is local domain it is message to admin
if (nodeId == null || nodeId.equals("")
|| (nodeNick == null && nodeId.endsWith(session.getDomain()))) {
Element query = packet.getElement().getChild("query");
Packet discoCommand = Command.GETDISCO.getPacket(session.getJID(),
session.getDomain(), StanzaType.get, packet.getElemId(), "submit");
Command.addFieldValue(discoCommand, "xmlns", query.getXMLNS());
Command.addFieldValue(discoCommand, "jid", packet.getElemTo());
if (query.getAttribute("node") != null) {
Command.addFieldValue(discoCommand, "node", query.getAttribute("node"));
} // end of if (query.getAttribute("node") != null)
results.offer(discoCommand);
return;
}
if (nodeId.equals(session.getUserId())) {
// Yes this is message to 'this' client
Element elem = packet.getElement().clone();
Packet result = new Packet(elem);
result.setTo(session.getConnectionId(packet.getElemTo()));
result.setFrom(packet.getTo());
results.offer(result);
} else {
// This is message to some other client so I need to
// set proper 'from' attribute whatever it is set to now.
// Actually processor should not modify request but in this
// case it is absolutely safe and recommended to set 'from'
// attribute
Element result = packet.getElement().clone();
// Not needed anymore. Packet filter does it for all stanzas.
// // According to spec we must set proper FROM attribute
// result.setAttribute("from", session.getJID());
results.offer(new Packet(result));
} // end of else
} catch (NotAuthorizedException e) {
log.warning(
"Received stats request but user session is not authorized yet: " +
packet.getStringData());
results.offer(Authorization.NOT_AUTHORIZED.getResponseMessage(packet,
"You must authorize session first.", true));
} // end of try-catch
}
} // ServiceDiscovery