simple sendmail for node.js

sendmail.js

/*
* Simple Sendmail
* Changes :
* - Added base64 encoding to username and password
* - Handling a simple attachment ( single base64 encoded attachment )
*/


var net = require('net')
  , config = {
      type: 'text/plain',
      boundary: "boundaryseparator"
    }

exports.send = function(options, cb) {
	var stream = net.createConnection(options.port, options.host)
  
	var from = options.from.match(/(<)(.*)(>)/)
				? options.from.match(/(<)(.*)(>)/)[2]
				: options.from

	var to = options.to.match(/(<)(.*)(>)/)
				? options.to.match(/(<)(.*)(>)/)[2]
				: options.to
    
	stream.on('connect', function() {
	  
		var out = [
		  'ehlo ' + (options.domain || from.split('@')[1])
		, 'auth login'
		, new Buffer(options.username,'utf-8').toString('base64')
		, new Buffer(options.password,'utf-8').toString('base64')
		, 'mail from:<' + from + '>'
		, 'rcpt to:<' + to + '>'
		, 'data'
		, 'From: ' + options.from
		, 'To: ' + options.to
		, 'Date: ' + new Date().toUTCString()
		, 'Subject: ' + options.subject
		, 'MIME-Version: 1.0'
		, 'Content-Type: multipart/mixed;boundary="'+config.boundary+'"'
		, '--'+config.boundary
		, 'Content-Type: ' + (options.type || config.type)
		, ''
		, options.body
		    .split(/\r\n|\n|\r/)
		    .join('\r\n')
		    .replace('\r\n.\r\n', '\r\n. \r\n')
		, '--'+config.boundary
		, 'Content-Type: application/octet-stream'
		, 'Content-Transfer-Encoding: Base64'
		, 'Content-Disposition: attachment;filename="'+options.attachment_name+'"'
		, ''
		, options.attachment_data
		, ''
		, '--'+config.boundary+'--'
		, '.'
		, 'quit'
		]
		
		//TODO: Remove delays in stream write ( reason for the send mailer code failing some time )
		for(var i=0; i<out.length; i++)
		{
		   stream.write(out[i]+'\r\n','ascii')
		   cb && cb(out[i]) 
		}
		stream.end()   
	})

	stream.on('error', function(err) {
		cb && cb(err)
	})

	stream.on('data', function (data) {
		cb && cb(data.toString('utf-8')) 
	})	
  
	stream.on('end', function() {
		cb && cb()
	})
}