org.onesocialweb.openfire.handler.relation.IQRelationQueryHandler.java Source code

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Here is the source code for org.onesocialweb.openfire.handler.relation.IQRelationQueryHandler.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.relation;

import java.util.List;

import org.dom4j.dom.DOMDocument;
import org.jivesoftware.openfire.IQHandlerInfo;
import org.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.auth.UnauthorizedException;
import org.jivesoftware.openfire.handler.IQHandler;
import org.jivesoftware.openfire.user.UserManager;
import org.jivesoftware.util.LocaleUtils;
import org.jivesoftware.util.Log;
import org.onesocialweb.model.relation.Relation;
import org.onesocialweb.openfire.manager.RelationManager;
import org.onesocialweb.xml.dom.RelationDomWriter;
import org.onesocialweb.xml.dom.imp.DefaultRelationDomWriter;
import org.w3c.dom.Element;
import org.xmpp.packet.IQ;
import org.xmpp.packet.JID;
import org.xmpp.packet.PacketError;

public class IQRelationQueryHandler extends IQHandler {

    public static final String NAME = "query";

    public static final String NAMESPACE = "http://onesocialweb.org/spec/1.0/relations#query";

    private final IQHandlerInfo info = new IQHandlerInfo(NAME, NAMESPACE);

    private UserManager userManager;

    public IQRelationQueryHandler() {
        super("OneSocialWeb - Query a user relations");
    }

    @Override
    public IQHandlerInfo getInfo() {
        return info;
    }

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

        JID sender = packet.getFrom();
        JID target = 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 {
            // If no recipient, then the target is the sender
            if (target == null || target.getNode() == null) {
                target = packet.getFrom();
            }

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

            // We fetch the relations of the target user
            List<Relation> relations = RelationManager.getInstance().getRelations(sender.toBareJID(),
                    target.toBareJID());

            // Prepare the result packet
            RelationDomWriter writer = new DefaultRelationDomWriter();
            DOMDocument domDocument = new DOMDocument();
            IQ result = IQ.createResultIQ(packet);
            Element query = (Element) domDocument.appendChild(domDocument.createElementNS(NAMESPACE, NAME));
            for (Relation relation : relations) {
                writer.toElement(relation, query);
            }
            result.setChildElement((org.dom4j.Element) query);
            // Return and send the result packet
            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();
    }
}