org.xsocket.connection.SimpleSmtpClient.java Source code

Introduction

Here is the source code for org.xsocket.connection.SimpleSmtpClient.java

Source

/*
 * Copyright (c) xlightweb.org, 2006 - 2010. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Please refer to the LGPL license at: http://www.gnu.org/copyleft/lesser.txt
 * The latest copy of this software may be found on http://www.xsocket.org/
 */
package org.xsocket.connection;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import javax.mail.Address;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;

import org.apache.commons.codec.binary.Base64;

/**
*
* @author grro@xsocket.org
*/
public final class SimpleSmtpClient {

    private String host = null;
    private int port = -1;
    private String username = null;
    private String password = null;

    public SimpleSmtpClient(String host, int port) throws IOException {
        this(host, port, null, null);
    }

    public SimpleSmtpClient(String host, int port, String username, String password) throws IOException {
        this.host = host;
        this.port = port;
        this.username = username;
        this.password = password;
    }

    public void send(String contentType, String text, String from, String to)
            throws IOException, MessagingException {
        MimeMessage msg = new MimeMessage((Session) null);
        msg.setContent(text, contentType);
        msg.addFrom(InternetAddress.parse(from));
        msg.addRecipients(RecipientType.TO, InternetAddress.parse(to));

        send(msg);
    }

    public void send(MimeMessage message) throws IOException, MessagingException {

        IBlockingConnection con = new BlockingConnection(host, port);

        // read greeting
        readResponse(con);

        sendCmd(con, "Helo mailserver");
        readResponse(con);

        if (username != null) {
            String userPassword = new String(
                    Base64.encodeBase64(new String("\000" + username + "\000" + password).getBytes()));
            sendCmd(con, "AUTH PLAIN " + userPassword);
            readResponse(con);
        }

        Address sender = message.getFrom()[0];
        sendCmd(con, "Mail From: " + sender.toString());
        readResponse(con);

        Address[] tos = message.getRecipients(RecipientType.TO);
        for (Address to : tos) {
            sendCmd(con, "Rcpt To: " + to.toString());
            readResponse(con);
        }

        sendCmd(con, "Data");
        readResponse(con);

        ByteArrayOutputStream os = new ByteArrayOutputStream();
        message.writeTo(os);
        os.close();

        String s = new String(os.toByteArray());
        con.write(s);
        con.write("\r\n.\r\n");

        sendCmd(con, "Quit");
        readResponse(con);

        con.close();
    }

    private void sendCmd(IBlockingConnection con, String cmd) throws IOException {
        System.out.println("sending " + cmd);
        con.write(cmd + "\r\n");
    }

    private String readResponse(IBlockingConnection con) throws IOException {
        String response = con.readStringByDelimiter("\r\n");
        System.out.println("receiving " + response);

        return response;
    }
}