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

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Here is the source code for org.onesocialweb.openfire.handler.activity.ActivitySubscribeHandler.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.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.auth.UnauthorizedException;
import org.jivesoftware.openfire.user.UserManager;
import org.jivesoftware.util.LocaleUtils;
import org.jivesoftware.util.Log;
import org.onesocialweb.openfire.handler.pep.PEPCommandHandler;
import org.onesocialweb.openfire.manager.ActivityManager;
import org.xmpp.packet.IQ;
import org.xmpp.packet.JID;
import org.xmpp.packet.PacketError;

public class ActivitySubscribeHandler extends PEPCommandHandler {

    public static final String COMMAND = "subscribe";

    private UserManager userManager;

    public ActivitySubscribeHandler() {
        super("OneSocialWeb - Subscribe to a user activities");
    }

    @Override
    public String getCommand() {
        return COMMAND;
    }

    @SuppressWarnings({ "deprecation" })
    @Override
    public IQ handleIQ(IQ packet) throws UnauthorizedException {

        JID sender = packet.getFrom();
        JID recipient = packet.getTo();

        // Process the request inside a try/catch so that unhandled exceptions
        // (oufofbounds etc...) can trigger a server error and we can send a
        // error result packet
        try {

            // A valid request is an IQ of type set, for a valid and local recipient
            if (!(packet.getType().equals(IQ.Type.set) && recipient != null && recipient.getNode() != null
                    && userManager.isRegisteredUser(recipient.getNode()))) {
                IQ result = IQ.createResultIQ(packet);
                result.setChildElement(packet.getChildElement().createCopy());
                result.setError(PacketError.Condition.bad_request);
                return result;
            }

            // A valid request has a (bare) JID attribute
            Element pubsubElement = packet.getChildElement();
            Element subscribeElement = pubsubElement.element("subscribe");
            Attribute jidAttribute = subscribeElement.attribute("jid");
            if (jidAttribute == null || !sender.toBareJID().equals(jidAttribute.getValue())) {
                IQ result = IQ.createResultIQ(packet);
                result.setChildElement(packet.getChildElement().createCopy());
                result.setError(PacketError.Condition.bad_request);
                return result;
            }

            // Add the relation to the database
            ActivityManager.getInstance().subscribe(sender.toBareJID(), recipient.toBareJID());

            // Return and send a result packet
            IQ result = IQ.createResultIQ(packet);
            Element resultPubsubElement = result.setChildElement("pubsub", "http://jabber.org/protocol/pubsub");
            Element resultSubscriptionElement = resultPubsubElement.addElement("subscription",
                    "http://jabber.org/protocol/pubsub");
            resultSubscriptionElement.addAttribute("node", PEPActivityHandler.NODE);
            resultSubscriptionElement.addAttribute("jid", recipient.toBareJID());
            resultSubscriptionElement.addAttribute("subscription", "subscribed");
            return result;

        } catch (Exception e) {
            Log.error(LocaleUtils.getLocalizedString("admin.error"), e);
            IQ result = IQ.createResultIQ(packet);
            result.setChildElement(packet.getChildElement().createCopy());
            result.setError(PacketError.Condition.internal_server_error);
            return result;
        }
    }

    @Override
    public void initialize(XMPPServer server) {
        super.initialize(server);
        userManager = server.getUserManager();
    }
}