smtp.java

手机邮箱撒的方式方式方式的

package mujmail.protocols;

/*
MujMail - Simple mail client for J2ME
Copyright (C) 2006 Nguyen Son Tung <[e-mail]>
Copyright (C) 2008 David Hauzar <[e-mail]>
 
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

import java.util.Vector;

import mujmail.AddressBook;
import mujmail.Lang;
import mujmail.MessageHeader;
import mujmail.MujMail;
import mujmail.MyException;
import mujmail.PersistentBox;
import mujmail.Settings;
import mujmail.account.MailAccount;
import mujmail.account.MailAccountPrimary;
import mujmail.connections.ConnectionCompressed;
import mujmail.connections.ConnectionInterface;
import mujmail.tasks.StoppableBackgroundTask;
import mujmail.tasks.StoppableProgress;
import mujmail.util.Decode;
import mujmail.util.Functions;

/**
 * Singleton class. It is only one instance of this class in whole program.
 * TODO: or consider the concept in which each instance of Outbox has own
 * instance of SMTP
 * 
 * Can be used for sending messages from given box using the method 
 * sendMessages() for sending arbitrary message using method 
 * sendMessage(MessageHeader).
 */
public class SMTP extends StoppableBackgroundTask {
    /** The name of this source file */
    private static final String SOURCE_FILE = "SMTP";

    /** Flag signals if we want to print debug prints */
    private static final boolean DEBUG = false;

    public static final byte CLOSE = 1;
    public static final byte SEND = 2;
    byte runMode;
    private final MujMail mujMail;
    /** The box the messages of which are actually sent. Updates with each calling
     of methods sendMail, sendMails etc.*/
    private PersistentBox box;
    //private TheBox reportBox;
    private boolean busy;
    private MessageHeader singleMail; //if we just want to send a single mail
    private ConnectionInterface connection;
    boolean locked; //for thread synchronizing
    boolean forcedDisc; //if it should disconnect from the server unconditionally	
    private MailAccount account;
    /** Used to send mails via smtp */
    private SMTPMailSender mailSender;
    private static SMTP SMTPSingleton = null;

    /**
     * Creates new instance of SMTP_MODE class.
     * 
     * @param box the box which messages will SMTP_MODE send
     * @param mujMail the main class of the program
     */
    private SMTP(MujMail mujMail) {
        super("SMTP singleton");
        //this.box = box;
        this.mujMail = mujMail;
        this.connection = new ConnectionCompressed();
        this.mailSender = new SMTPMailSender(connection);
        //initAccount cannot go here, no hashtable yet; 
    }
    
    /**
     * Gets the singleton instance of SMTP class.
     * @param mujMail the main object of the application
     * @return the SMTP singleton instance
     */
    public static SMTP getSMTPSingleton(MujMail mujMail) {
        if (SMTPSingleton != null) return SMTPSingleton;
        
        SMTPSingleton = new SMTP(mujMail);
        return SMTPSingleton;
    }
    
    /** Search account for sending mails
     *  Currently we're using primary mail account for sending mails
     */
    public void initAccount() {
        String primaryMailAccountName = Settings.primaryEmail;
        account = (MailAccount)mujMail.getMailAccounts().get(primaryMailAccountName);
        if (account == null) {
            // Error primary account not found
            // Safe choice ... using first mail account
            if (mujMail.getMailAccounts().size() > 0) {
                account = (MailAccount)mujMail.getMailAccounts().elements().nextElement();
            } else {
                account = new MailAccountPrimary();
            }
        }
        if (DEBUG) System.out.println("DEBUG SMTP.initAccount():\n" + getAccount());
    }

    protected synchronized void lock() {
        try {
            while (locked) {
                wait(100);
            }
        } catch (InterruptedException e) {
        }
        locked = true;
    }

    protected void unlock() {
        locked = false;
    }

    public void stop() {
        if (isBusy()) {
            connection.quit();
        }
    }

     public boolean isConnected() {
        try {
            if (connection.isConnected()) {
                connection.sendCRLF("NOOP");
                if (connection.getLine().compareTo("") != 0) {
                    return true;
                }
            }
        } catch (Exception ex) {
            return false;
        }
        return false;
    }

    public boolean isBusy() {
        return busy;
    }

    
    /**
     * Sends all mails in the box.
     */
    public void sendMails(PersistentBox box) {
        this.box = box;
        // send mails in the box, not single mail
        singleMail = null;
        sendSMTP();
    }
    
    /**
     * Sends single mail.
     * @param mail the mail to send
     */
    public void sendMail(MessageHeader mail, PersistentBox box) {
        this.box = box;
        singleMail = mail;
        sendSMTP();
    }
    
    /**
     * Sends single mail or all mails in the box - according to setting of
     * the variable singleMail.
     */
    private synchronized void sendSMTP() {
        runMode = SEND;
        start();
    }

    public synchronized void close(boolean forcedDisc, PersistentBox box) {
        this.box = box;
        if (this.forcedDisc) {
            return;
        }
        this.forcedDisc = forcedDisc;
        runMode = CLOSE;
        start();
    }



    public void doWork() {
        if (runMode == CLOSE && forcedDisc) {
            busy = true;
            mailSender.close();
            forcedDisc = false;
            busy = false;
            box.repaint();
            return;
        }
        lock();
        busy = true;
        connection.unQuit();
        switch (runMode) {
            case CLOSE:
                mailSender.close();
                break;
            case SEND:
                // send mails
                sendMails(this);
                break;
        }
        
        busy = false;
        singleMail = null;
        unlock();
        box.repaint();
    }
    
    /**
     * Adds recipients to the addressbook.