streamhostprovider.java

JBother是纯Java开发的Jabber(即时消息开源软件)客户端。支持群组聊天

/**
 * $RCSfile$
 * $Revision: 2495 $
 * $Date: 2005-05-30 10:14:25 -0500 (Mon, 30 May 2005) $
 *
 * Copyright 2003-2004 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.smackx.provider;

import org.jivesoftware.smackx.packet.*;

import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smack.packet.IQ;
import org.xmlpull.v1.XmlPullParser;

/**
 * this class implements a provider for <streamhost> and <streamhost-used>
 * packets.
 *
 * @author Lukasz Wiechec
 */

public class StreamHostProvider implements IQProvider {
    public static final String NAMESPACE = "http://jabber.org/protocol/bytestreams";

    public IQ parseIQ(XmlPullParser parser) throws Exception {
        boolean done = false;
        int port = 8888;
        String host = "";
        String jid = "";

        String sid = parser.getAttributeValue("","sid");;
        StreamHost h = null;
        StreamHostUsed u = null;
        boolean streamhostused = false;

        while (!done) {
            int eventType = parser.next();
            String elementName = parser.getName();
            String namespace = parser.getNamespace();

            if (eventType == XmlPullParser.START_TAG) {
                if (elementName.equals("streamhost")) {
                    try {
                        port = Integer.parseInt(parser.getAttributeValue("","port"));
                    }
                    catch(NumberFormatException nfe) { }

                    host = parser.getAttributeValue("","host");
                    jid = parser.getAttributeValue("","jid");
                    if(h == null) h = new StreamHost(sid);
                    h.addHost(new StreamHost.Host(host, jid, port));
                } else if (elementName.equals("streamhost-used")) {
                    jid = parser.getAttributeValue("","jid");
                    if(u == null) u = new StreamHostUsed(jid);
                    streamhostused = true;

                }
            } else if (eventType == XmlPullParser.END_TAG && elementName.equals("query")) {
                done = true;
            }
        }

        if (host != null && !streamhostused) {
            return h;
        }
        else {
            return u;
        }
    }


}