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package com.nary.net;
import java.net.*;
import java.io.*;
import java.util.*;
import com.nary.Debug;
/**
* <P>
* This class is used to construct and send a simple email, using the SMTP protocol.
* This class is special, since the connection can be left open to send multiple
* emails on one connection sitting.
* <P>
* <BR> Date: December 1997
*
* @version 1.0
* @author Alan Willamson (alan@n-ary.com)
* @since JDK1.1.4
*/
public class sendEmail extends java.lang.Object{
private Socket smtpHost;
private BufferedReader In;
private DataOutputStream Out;
/**
* <P>
* Creates a new connection to the mail host on port 25
* <P>
* @param _Host The host name where the mail server resides.
*
*/
public sendEmail(String _Host)
{
try {
smtpHost = new Socket( _Host, 25 );
Out = new DataOutputStream( smtpHost.getOutputStream() );
In = new BufferedReader( new InputStreamReader(smtpHost.getInputStream()) );
//- Read Welcome message from server
String LineIn = In.readLine();
if ( LineIn.indexOf("220")==-1 ) throw new Exception("Bad Server");
if ( In.ready() )
LineIn = In.readLine();
//- Introduce ourselves to the server
Out.writeBytes( "HELO n-ary.com\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("No response from Server");
}
catch( Exception E ){
smtpHost = null;
}
}
public boolean bOk(){
if ( smtpHost == null )
return false;
else
return true;
}
/**
* <P>
* Sends a new email message to the specified addressee
* <P>
* @param _to The email address that will receive the email
* @param _from The email address that will send the email
* @param _subject The email subject
* @param _body The email body
* @return boolean Returns a <code>true</code> if the mail was sent successfully
*
*/
public boolean send( String _to, String _from, String _subject, String _body ){
//- Send One Email
if ( smtpHost == null ) return false;
try{
String LineIn;
//- Set the FROM
Out.writeBytes( "MAIL FROM:<" + _from + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad MAIL FROM:");
//- Set the TO field
Out.writeBytes( "RCPT TO:<" + transform(_to) + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad RCPT TO:");
//- Set the DATA field
Out.writeBytes( "DATA\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("354")==-1 ) throw new Exception("Bad DATA");
Out.writeBytes( "From: "+_from+"\r\nSubject: " + _subject +"\r\n");
Out.writeBytes( "To: "+_to+"\r\n");
Out.writeBytes( _body );
Out.writeBytes( "\r\n.\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad End of Data");
}catch(Exception E){
return false;
}
return true;
}
public boolean sendStart( String _to, String _from, String _subject )
{
//- Send One Email
if ( smtpHost == null ) return false;
String LineIn="";
try{
//- Set the FROM
Out.writeBytes( "MAIL FROM:<" + _from + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad MAIL FROM:");
//- Set the TO field
Out.writeBytes( "RCPT TO:<" + transform(_to) + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad RCPT TO:");
//- Set the DATA field
Out.writeBytes( "DATA\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("354")==-1 ) throw new Exception("Bad DATA");
Out.writeBytes( "From: "+_from+"\r\nSubject: " + _subject +"\r\n");
Out.writeBytes( "To: "+_to+"\r\n");
}catch(Exception E){
return false;
}
return true;
}
public boolean sendStart( String _to[], String _from, String _subject )
{
//- Send One Email
if ( smtpHost == null || _to.length == 0 ) return false;
String LineIn="";
try{
//- Set the FROM
Out.writeBytes( "MAIL FROM:<" + _from + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250") == -1 ) throw new Exception("Bad MAIL FROM:");
//- Set the TO field
for ( int x=0; x < _to.length; x++ ){
Out.writeBytes( "RCPT TO:<" + transform(_to[x]) + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1 ) throw new Exception("Bad RCPT TO:");
}
//- Set the DATA field
Out.writeBytes( "DATA\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("354")==-1 ) throw new Exception("Bad DATA");
Out.writeBytes( "From: "+_from+"\r\nSubject: " + _subject +"\r\n");
Out.writeBytes( "To: "+_to[0]+"\r\n");
}catch(Exception E){
return false;
}
return true;
}
public boolean sendBodyLine( String _line )
{
try{
Out.writeBytes( _line + "\n" );
return true;
}catch(Exception E){}
return false;
}
public boolean sendEnd()
{
try{
Out.writeBytes( "\r\n.\r\n" );
String LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1) throw new Exception("Bad End of Data");
return true;
}catch(Exception E){}
return false;
}
/**
* <P>
* Closes the connection to the mail server
* <P>
*/
public void close(){
try{
if ( smtpHost != null ) smtpHost.close();
}catch( Exception E ){}
}
protected void finalize() throws Throwable {
close();
}
public static String transform(String _to){
String newTo="";
StringTokenizer st = new StringTokenizer(_to," ");
while (st.hasMoreTokens()){
newTo = st.nextToken();
if (newTo.indexOf("@")!=-1){
return newTo.replace('<',' ').replace('>',' ').trim();
}
}
return _to;
}
public boolean sendMail( String _to[], String _from, String _cc[], String _bcc[], String _subject, Vector _vBody ){
//- Send One Email
if ( smtpHost == null || _to.length == 0 ) return false;
String LineIn="";
try{
//- Set the FROM
Out.writeBytes( "MAIL FROM:<" + _from + ">\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250") == -1 ) throw new Exception("Bad MAIL FROM:");
//- Set the TO field
for ( int x=0; x < _to.length; x++ ){
Out.writeBytes( "RCPT TO:<" + transform(_to[x]) + ">\r\n" );
LineIn = In.readLine();
}
//- Set the CC field
for ( int x=0; x < _cc.length; x++ ){
Out.writeBytes( "RCPT TO:<" + transform(_cc[x]) + ">\r\n" );
LineIn = In.readLine();
}
//- Set the BCC field
for ( int x=0; x < _bcc.length; x++ ){
Out.writeBytes( "RCPT TO:<" + transform(_bcc[x]) + ">\r\n" );
LineIn = In.readLine();
}
//- Set the DATA field
Out.writeBytes( "DATA\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("354")==-1 ) throw new Exception("Bad DATA");
Out.writeBytes( "From: "+_from+"\r\nSubject: " + _subject +"\r\n");
//- Send the to field
Out.writeBytes( "To: " );
for ( int x=0; x < _to.length; x++ ){
Out.writeBytes( transform(_to[x]) );
if ( x < _to.length-1 )
Out.writeBytes( "," );
}
Out.writeBytes("\r\n");
//- Send the to field
Out.writeBytes( "Cc: " );
for ( int x=0; x < _cc.length; x++ ){
Out.writeBytes( transform(_cc[x]) );
if ( x < _cc.length-1 )
Out.writeBytes( "," );
}
Out.writeBytes("\r\n");
Enumeration EE = _vBody.elements();
while ( EE.hasMoreElements() )
Out.writeBytes( (String)EE.nextElement() + "\n" );
Out.writeBytes( "\r\n.\r\n" );
LineIn = In.readLine();
if ( LineIn.indexOf("250")==-1) throw new Exception("Bad End of Data");
return true;
}catch(Exception E){}
return false;
}
}
/**
* Java Servlets by Example
* Alan R. Williamson
* http://manning.com/books/williamson
* ISBN: 188477766X
*/
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References.
The list of classes which were used on this page you can find below. The
links to Java API contain official SUN documentation about all used classes.
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