login.java

用JAVA编写的基于J2ME的即时消息通信的客户端的程序。用于与JABBER服务器通信

/*
 * Copyright 2004 Grzegorz Grasza [e-mail]
 *
 * This file is part of mobber. Mobber is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by the Free 
 * Software Foundation; either version 2 of the License, or (at your option) any later version.
 * Mobber is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License along with mobber;
 * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA .
 */

import javax.microedition.lcdui.*;
import java.io.*;
import javax.microedition.rms.*;

public class Login extends Form implements CommandListener
{
	TextField jid, passwd;
	ChoiceGroup sync = new ChoiceGroup(null, Choice.MULTIPLE);
	String server = "gryf.info", port = "5222",
	username = "", password = "",
	resource = "mobile";
	int show = 0, priority = 6;
	String status = "";
	
	Login()
	{
		super(Label.login);
		
		RecordStore store = null;
		try
		{
			store = RecordStore.openRecordStore("account", true);
			if(store.getNumRecords() == 1)
			{
				byte[] data=store.getRecord(1);
				DataInputStream str=new DataInputStream(new ByteArrayInputStream(data));
				server=str.readUTF();
				username=str.readUTF();
				password=str.readUTF();
				resource=str.readUTF();
			}
        }
		catch(Exception e)
		{
            //e.printStackTrace();
        }
        
		if(store!=null)
		{
 			try
			{
				store.closeRecordStore();
			}
			catch(Exception e)
			{
				//e.printStackTrace();
			}
		}
		
		jid = new TextField("JID", username + '@' + server + '/' + resource, 64, TextField.EMAILADDR);
		passwd = new TextField(Label.password, password, 32, TextField.PASSWORD);
		try
		{
			append(new ImageItem(null, Image.createImage("/mobber.png"), ImageItem.LAYOUT_CENTER | ImageItem.LAYOUT_NEWLINE_BEFORE | ImageItem.LAYOUT_NEWLINE_AFTER, "mobber"));
		}
		catch(Exception e)
		{
			//e.printStackTrace();
		}
		append(jid);
		append(passwd);
		sync.append(Label.sync, null);
		sync.setSelectedIndex(0, true);
		append(sync);
		addCommand(Action.login);
		addCommand(Action.exit);
		setCommandListener(this);
		setTicker(new Ticker(" m o bber  Copyright (c) Grzegorz Grasza"));
	}
	
	public void commandAction(Command c, Displayable s)
	{
		if(c == Action.login)
		{
			String tmp = jid.getString();
			int x, y;
			username = tmp.substring(0, x=tmp.indexOf('@'));
			if((y=tmp.indexOf('/')) != -1)
			{
				server = tmp.substring(++x, y);
				resource = tmp.substring(++y);
			}
			else
				server = tmp.substring(x);
			password = passwd.getString();
			
			RecordStore store = null;
			try
			{
				store = RecordStore.openRecordStore("account",true);
				if(store.getNumRecords()>0)
				{
					store.closeRecordStore();
					RecordStore.deleteRecordStore("account");
					store = RecordStore.openRecordStore("account",true);
				}
				ByteArrayOutputStream bstr = new ByteArrayOutputStream();
				DataOutputStream str = new DataOutputStream(bstr);
				str.writeUTF(server);
				str.writeUTF(username);
				str.writeUTF(password);
				str.writeUTF(resource);
				byte data[] = bstr.toByteArray();
				store.addRecord(data,0,data.length);
			}
			catch(Exception e)
			{
				//e.printStackTrace();
			}
			if(store != null)
			{
				try
				{
					store.closeRecordStore();
				}
				catch(Exception e)
				{
					//e.printStackTrace();
				}
			}
			if(sync.isSelected(0))
				mobber.roster.restore();
			mobber.jabber = new Jabber(server, port, username, password, resource);
			mobber.display.setCurrent(mobber.roster);
		}
		else // exit
			mobber.kill();
	}
};