org.onesocialweb.openfire.handler.activity.IQSubscribeInterceptor.java Source code

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Here is the source code for org.onesocialweb.openfire.handler.activity.IQSubscribeInterceptor.java

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/*
 *  Copyright 2010 Vodafone Group Services Ltd.
 *
 *  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.onesocialweb.openfire.handler.activity;

import org.dom4j.Attribute;
import org.dom4j.Element;
import org.dom4j.Namespace;
import org.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.interceptor.PacketInterceptor;
import org.jivesoftware.openfire.interceptor.PacketRejectedException;
import org.jivesoftware.openfire.session.Session;
import org.onesocialweb.openfire.manager.ActivityManager;
import org.xmpp.packet.IQ;
import org.xmpp.packet.JID;
import org.xmpp.packet.Packet;

public class IQSubscribeInterceptor implements PacketInterceptor {

    private final XMPPServer server;

    public IQSubscribeInterceptor() {
        server = XMPPServer.getInstance();
    }

    public void interceptPacket(Packet packet, Session session, boolean incoming, boolean processed)
            throws PacketRejectedException {

        // We only care for incoming IQ that have not yet been processed
        if (incoming && !processed && packet instanceof IQ) {

            final IQ iq = (IQ) packet;
            final JID fromJID = iq.getFrom();
            final JID toJID = iq.getTo();

            // Must be iq of type set and sent to remote users
            if (!iq.getType().equals(IQ.Type.set) || server.isLocal(toJID)) {
                return;
            }

            // With a pubsub requests
            Element requestElement = iq.getChildElement();
            if (!requestElement.getNamespace().equals(Namespace.get("http://jabber.org/protocol/pubsub"))) {
                return;
            }

            // With a subscibe or unsubscribe command
            Element commandElement = requestElement.element("subscribe");
            if (commandElement == null) {
                commandElement = requestElement.element("unsubscribe");
                if (commandElement == null) {
                    return;
                }
            }

            // Relating to the microblogging node
            Attribute nodeAttribute = commandElement.attribute("node");
            if (!(nodeAttribute != null && nodeAttribute.getValue().equals(PEPActivityHandler.NODE))) {
                return;
            }

            // Then we keep track of the subscribe/unsubscribe request
            if (commandElement.getName().equals("subscribe")) {
                ActivityManager.getInstance().subscribe(fromJID.toBareJID(), toJID.toBareJID());
            } else {
                ActivityManager.getInstance().unsubscribe(fromJID.toBareJID(), toJID.toBareJID());
            }

        }
    }
}