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<?php
/**
* Filename.......: class.smtp.inc
* Project........: SMTP Class
* Version........: 1.0.5
* Last Modified..: 21 December 2001
*/
define('SMTP_STATUS_NOT_CONNECTED', 1, TRUE);
define('SMTP_STATUS_CONNECTED', 2, TRUE);
class smtp{
var $authenticated;
var $connection;
var $recipients;
var $headers;
var $timeout;
var $errors;
var $status;
var $body;
var $from;
var $host;
var $port;
var $helo;
var $auth;
var $user;
var $pass;
/**
* Constructor function. Arguments:
* $params - An assoc array of parameters:
*
* host - The hostname of the smtp server Default: localhost
* port - The port the smtp server runs on Default: 25
* helo - What to send as the HELO command Default: localhost
* (typically the hostname of the
* machine this script runs on)
* auth - Whether to use basic authentication Default: FALSE
* user - Username for authentication Default: <blank>
* pass - Password for authentication Default: <blank>
* timeout - The timeout in seconds for the call Default: 5
* to fsockopen()
*/
function smtp($params = array()){
if(!defined('CRLF'))
define('CRLF', "\r\n", TRUE);
$this->authenticated = FALSE;
$this->timeout = 5;
$this->status = SMTP_STATUS_NOT_CONNECTED;
$this->host = 'localhost';
$this->port = 25;
$this->helo = 'localhost';
$this->auth = FALSE;
$this->user = '';
$this->pass = '';
$this->errors = array();
foreach($params as $key => $value){
$this->$key = $value;
}
}
/**
* Connect function. This will, when called
* statically, create a new smtp object,
* call the connect function (ie this function)
* and return it. When not called statically,
* it will connect to the server and send
* the HELO command.
*/
function &connect($params = array()){
if(!isset($this->status)){
$obj = new smtp($params);
if($obj->connect()){
$obj->status = SMTP_STATUS_CONNECTED;
}
return $obj;
}else{
$this->connection = fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
if(function_exists('socket_set_timeout')){
@socket_set_timeout($this->connection, 5, 0);
}
$greeting = $this->get_data();
if(is_resource($this->connection)){
return $this->auth ? $this->ehlo() : $this->helo();
}else{
$this->errors[] = 'Failed to connect to server: '.$errstr;
return FALSE;
}
}
}
/**
* Function which handles sending the mail.
* Arguments:
* $params - Optional assoc array of parameters.
* Can contain:
* recipients - Indexed array of recipients
* from - The from address. (used in MAIL FROM:),
* this will be the return path
* headers - Indexed array of headers, one header per array entry
* body - The body of the email
* It can also contain any of the parameters from the connect()
* function
*/
function send($params = array()){
foreach($params as $key => $value){
$this->set($key, $value);
}
if($this->is_connected()){
// Do we auth or not? Note the distinction between the auth variable and auth() function
if($this->auth AND !$this->authenticated){
if(!$this->auth())
return FALSE;
}
$this->mail($this->from);
if(is_array($this->recipients))
foreach($this->recipients as $value)
$this->rcpt($value);
else
$this->rcpt($this->recipients);
if(!$this->data())
return FALSE;
// Transparency
$headers = str_replace(CRLF.'.', CRLF.'..', trim(implode(CRLF, $this->headers)));
$body = str_replace(CRLF.'.', CRLF.'..', $this->body);
$body = $body[0] == '.' ? '.'.$body : $body;
$this->send_data($headers);
$this->send_data('');
$this->send_data($body);
$this->send_data('.');
$result = (substr(trim($this->get_data()), 0, 3) === '250');
//$this->rset();
return $result;
}else{
$this->errors[] = 'Not connected!';
return FALSE;
}
}
/**
* Function to implement HELO cmd
*/
function helo(){
if(is_resource($this->connection)
AND $this->send_data('HELO '.$this->helo)
AND substr(trim($error = $this->get_data()), 0, 3) === '250' ){
return TRUE;
}else{
$this->errors[] = 'HELO command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/**
* Function to implement EHLO cmd
*/
function ehlo(){
if(is_resource($this->connection)
AND $this->send_data('EHLO '.$this->helo)
AND substr(trim($error = $this->get_data()), 0, 3) === '250' ){
return TRUE;
}else{
$this->errors[] = 'EHLO command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/**
* Function to implement RSET cmd
*/
function rset(){
if(is_resource($this->connection)
AND $this->send_data('RSET')
AND substr(trim($error = $this->get_data()), 0, 3) === '250' ){
return TRUE;
}else{
$this->errors[] = 'RSET command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/**
* Function to implement QUIT cmd
*/
function quit(){
if(is_resource($this->connection)
AND $this->send_data('QUIT')
AND substr(trim($error = $this->get_data()), 0, 3) === '221' ){
fclose($this->connection);
$this->status = SMTP_STATUS_NOT_CONNECTED;
return TRUE;
}else{
$this->errors[] = 'QUIT command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/**
* Function to implement AUTH cmd
*/
function auth(){
if(is_resource($this->connection)
AND $this->send_data('AUTH LOGIN')
AND substr(trim($error = $this->get_data()), 0, 3) === '334'
AND $this->send_data(base64_encode($this->user)) // Send username
AND substr(trim($error = $this->get_data()),0,3) === '334'
AND $this->send_data(base64_encode($this->pass)) // Send password
AND substr(trim($error = $this->get_data()),0,3) === '235' ){
$this->authenticated = TRUE;
return TRUE;
}else{
$this->errors[] = 'AUTH command failed: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/**
* Function that handles the MAIL FROM: cmd
*/
function mail($from){
if($this->is_connected()
AND $this->send_data('MAIL FROM:<'.$from.'>')
AND substr(trim($this->get_data()), 0, 2) === '250' ){
return TRUE;
}else
return FALSE;
}
/**
* Function that handles the RCPT TO: cmd
*/
function rcpt($to){
if($this->is_connected()
AND $this->send_data('RCPT TO:<'.$to.'>')
AND substr(trim($error = $this->get_data()), 0, 2) === '25' ){
return TRUE;
}else{
$this->errors[] = trim(substr(trim($error), 3));
return FALSE;
}
}
/**
* Function that sends the DATA cmd
*/
function data(){
if($this->is_connected()
AND $this->send_data('DATA')
AND substr(trim($error = $this->get_data()), 0, 3) === '354' ){
return TRUE;
}else{
$this->errors[] = trim(substr(trim($error), 3));
return FALSE;
}
}
/**
* Function to determine if this object
* is connected to the server or not.
*/
function is_connected(){
return (is_resource($this->connection) AND ($this->status === SMTP_STATUS_CONNECTED));
}
/**
* Function to send a bit of data
*/
function send_data($data){
if(is_resource($this->connection)){
return fwrite($this->connection, $data.CRLF, strlen($data)+2);
}else
return FALSE;
}
/**
* Function to get data.
*/
function &get_data(){
$return = '';
$line = '';
$loops = 0;
if(is_resource($this->connection)){
while((strpos($return, CRLF) === FALSE OR substr($line,3,1) !== ' ') AND $loops < 100){
$line = fgets($this->connection, 512);
$return .= $line;
$loops++;
}
return $return;
}else
return FALSE;
}
/**
* Sets a variable
*/
function set($var, $value){
$this->$var = $value;
return TRUE;
}
} // End of class
?>