/**
* Copyright (C) 2004-2009 Jive Software. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.openfire.handler;
import org.dom4j.Element;
import org.jivesoftware.openfire.IQHandlerInfo;
import org.jivesoftware.openfire.PresenceManager;
import org.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.auth.UnauthorizedException;
import org.jivesoftware.openfire.disco.ServerFeaturesProvider;
import org.jivesoftware.openfire.roster.RosterItem;
import org.jivesoftware.openfire.roster.RosterManager;
import org.jivesoftware.openfire.user.User;
import org.jivesoftware.openfire.user.UserManager;
import org.jivesoftware.openfire.user.UserNotFoundException;
import org.xmpp.packet.IQ;
import org.xmpp.packet.PacketError;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Implements the TYPE_IQ jabber:iq:last protocol (last activity). Allows users to find out
* the number of seconds another user has been offline. This information is only available to
* those users that already subscribed to the users presence. Otherwhise, a <tt>forbidden</tt>
* error will be returned.
*
* @author Gaston Dombiak
*/
public class IQLastActivityHandler extends IQHandler implements ServerFeaturesProvider {
private IQHandlerInfo info;
private PresenceManager presenceManager;
private RosterManager rosterManager;
public IQLastActivityHandler() {
super("XMPP Last Activity Handler");
info = new IQHandlerInfo("query", "jabber:iq:last");
}
@Override
public IQ handleIQ(IQ packet) throws UnauthorizedException {
IQ reply = IQ.createResultIQ(packet);
Element lastActivity = reply.setChildElement("query", "jabber:iq:last");
String sender = packet.getFrom().getNode();
String username = packet.getTo() == null ? null : packet.getTo().getNode();
// Check if any of the usernames is null
if (sender == null || username == null) {
reply.setError(PacketError.Condition.forbidden);
return reply;
}
try {
RosterItem item = rosterManager.getRoster(username).getRosterItem(packet.getFrom());
// Check that the user requesting this information is subscribed to the user's presence
if (item.getSubStatus() == RosterItem.SUB_FROM ||
item.getSubStatus() == RosterItem.SUB_BOTH) {
if (sessionManager.getSessions(username).isEmpty()) {
User user = UserManager.getInstance().getUser(username);
// The user is offline so answer the user's "last available time and the
// status message of the last unavailable presence received from the user"
long lastActivityTime = presenceManager.getLastActivity(user);
if (lastActivityTime > -1) {
// Convert it to seconds
lastActivityTime = lastActivityTime / 1000;
}
lastActivity.addAttribute("seconds", String.valueOf(lastActivityTime));
String lastStatus = presenceManager.getLastPresenceStatus(user);
if (lastStatus != null && lastStatus.length() > 0) {
lastActivity.setText(lastStatus);
}
}
else {
// The user is online so answer seconds=0
lastActivity.addAttribute("seconds", "0");
}
}
else {
reply.setError(PacketError.Condition.forbidden);
}
}
catch (UserNotFoundException e) {
reply.setError(PacketError.Condition.forbidden);
}
return reply;
}
@Override
public IQHandlerInfo getInfo() {
return info;
}
public Iterator<String> getFeatures() {
ArrayList<String> features = new ArrayList<String>();
features.add("jabber:iq:last");
return features.iterator();
}
@Override
public void initialize(XMPPServer server) {
super.initialize(server);
presenceManager = server.getPresenceManager();
rosterManager = server.getRosterManager();
}
}