<?php   
class smtp   
{   
  
/* Public Variables */  
  
var $smtp_port;   
  
var $time_out;   
  
var $host_name;   
  
var $log_file;   
  
var $relay_host;   
  
var $debug;   
  
var $auth;   
  
var $user;   
  
var $pass;   
  
/* Private Variables */    
var $sock;   
  
/* Constractor */  
  
function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)   
  
{   
  
$this->debug = FALSE;   
  
$this->smtp_port = $smtp_port;   
  
$this->relay_host = $relay_host;   
  
$this->time_out = 30; //is used in fsockopen()    
#   
  
$this->auth = $auth;//auth   
  
$this->user = $user;   
  
$this->pass = $pass;   
  
#   
  
$this->host_name = "localhost"; //is used in HELO command    
$this->log_file = "";   
  
  
  
$this->sock = FALSE;   
  
}   
  
/* Main Function */  
  
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")   
  
{   
$mail_from = $this->get_address($this->strip_comment($from));   
  
$body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);   
  
$header .= "MIME-Version:1.0\r\n";
  
if($mailtype=="HTML"){
  
$header .= "Content-Type:text/html; charset=gb2312 \r\n";
  
}   
  
$header .= "To: ".$to."\r\n";   
  
if ($cc != "") {   
  
$header .= "Cc: ".$cc."\r\n";   
  
}   
  
$header .= "From: $from<".$from.">\r\n";   
  
$header .= "Subject: ".$subject."\r\n";   
  
$header .= $additional_headers;   
  
$header .= "Date: ".date("r")."\r\n";   
  
$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";   
  
list($msec, $sec) = explode(" ", microtime());   
  
$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";   
  
$TO = explode(",", $this->strip_comment($to));   
  
if ($cc != "") {   
  
$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));   
  
}   
  
if ($bcc != "") {   
  
$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));   
  
}   
  
$sent = TRUE;   
  
foreach ($TO as $rcpt_to) {   
  
$rcpt_to = $this->get_address($rcpt_to);   
  
if (!$this->smtp_sockopen($rcpt_to)) {   
  
$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");   
  
$sent = FALSE;   
  
continue;   
  
}   
  
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {   
  
$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");   
  
} else {   
  
$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");   
  
$sent = FALSE;   
  
}   
  
fclose($this->sock);   
  
$this->log_write("Disconnected from remote host\n");   
  
}   
  
return $sent;   
  
}   
  
  
  
/* Private Functions */  
  
  
  
function smtp_send($helo, $from, $to, $header, $body = "")   
  
{   
  
if (!$this->smtp_putcmd("HELO", $helo)) {   
  
return $this->smtp_error("sending HELO command");   
  
}   
  
#auth   
  
if($this->auth){   
  
if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {   
  
return $this->smtp_error("sending HELO command");   
  
}   
  
if (!$this->smtp_putcmd("", base64_encode($this->pass))) {   
  
return $this->smtp_error("sending HELO command");   
  
}   
  
}   
  
#   
  
if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {   
  
return $this->smtp_error("sending MAIL FROM command");   
  
}   
  
if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {   
  
return $this->smtp_error("sending RCPT TO command");   
  
}   
  
if (!$this->smtp_putcmd("DATA")) {   
  
return $this->smtp_error("sending DATA command");   
  
}   
  
if (!$this->smtp_message($header, $body)) {   
  
return $this->smtp_error("sending message");   
  
}   
  
if (!$this->smtp_eom()) {   
  
return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");   
  
}   
  
if (!$this->smtp_putcmd("QUIT")) {   
  
return $this->smtp_error("sending QUIT command");   
  
}   
  
return TRUE;   
  
}   
  
function smtp_sockopen($address)   
  
{   
  
if ($this->relay_host == "") {   
  
return $this->smtp_sockopen_mx($address);   
  
} else {   
  
return $this->smtp_sockopen_relay();   
  
}   
  
}   
  
function smtp_sockopen_relay()   
  
{   
  
$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");   
  
$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);   
  
if (!($this->sock && $this->smtp_ok())) {   
  
$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");   
  
$this->log_write("Error: ".$errstr." (".$errno.")\n");   
  
return FALSE;   
  
}   
  
$this->log_write("Connected to relay host ".$this->relay_host."\n");   
  
return TRUE;;   
  
}   
  
  
  
function smtp_sockopen_mx($address)   
  
{   
  
$domain = ereg_replace("^.+@([^@]+)$", "\1", $address);   
  
if (!@getmxrr($domain, $MXHOSTS)) {   
  
$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");   
  
return FALSE;   
  
}   
  
foreach ($MXHOSTS as $host) {   
  
$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");   
  
$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);   
  
if (!($this->sock && $this->smtp_ok())) {   
  
$this->log_write("Warning: Cannot connect to mx host ".$host."\n");   
  
$this->log_write("Error: ".$errstr." (".$errno.")\n");   
  
continue;   
  
}   
  
$this->log_write("Connected to mx host ".$host."\n");   
  
return TRUE;   
  
}   
  
$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");   
  
return FALSE;   
  
}   
  
  
  
function smtp_message($header, $body)   
  
{   
  
fputs($this->sock, $header."\r\n".$body);   
  
$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));   
  
  
  
return TRUE;   
  
}   
  
  
  
function smtp_eom()   
  
{   
  
fputs($this->sock, "\r\n.\r\n");   
  
$this->smtp_debug(". [EOM]\n");   
  
  
  
return $this->smtp_ok();   
  
}   
  
  
  
function smtp_ok()   
  
{   
  
$response = str_replace("\r\n", "", fgets($this->sock, 512));   
  
$this->smtp_debug($response."\n");   
  
  
  
if (!ereg("^[23]", $response)) {   
  
fputs($this->sock, "QUIT\r\n");   
  
fgets($this->sock, 512);   
  
$this->log_write("Error: Remote host returned \"".$response."\"\n");   
  
return FALSE;   
  
}   
  
return TRUE;   
  
}   
  
function smtp_putcmd($cmd, $arg = "")   
  
{   
  
if ($arg != "") {   
  
if($cmd=="") $cmd = $arg;   
  
else $cmd = $cmd." ".$arg;   
  
}   
  
fputs($this->sock, $cmd."\r\n");   
  
$this->smtp_debug("> ".$cmd."\n");   
  
return $this->smtp_ok();   
  
}   
  
function smtp_error($string)   
  
{   
  
$this->log_write("Error: Error occurred while ".$string.".\n");   
  
return FALSE;   
  
}   
  
function log_write($message)   
  
{   
  
$this->smtp_debug($message);   
  
if ($this->log_file == "") {   
  
return TRUE;   
  
}   
  
$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;   
  
if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {   
  
$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");   
  
return FALSE;;   
  
}   
  
flock($fp, LOCK_EX);   
  
fputs($fp, $message);   
  
fclose($fp);   
  
  
return TRUE;   
  
}   
  
  
function strip_comment($address)   
  
{   
  
$comment = "\([^()]*\)";   
  
while (ereg($comment, $address)) {   
  
$address = ereg_replace($comment, "", $address);   
  
}   
  
  
return $address;   
  
}   
  
  
function get_address($address)   
  
{   
  
$address = ereg_replace("([ \t\r\n])+", "", $address);   
  
$address = ereg_replace("^.*<(.+)>.*$", "\1", $address);   
  
return $address;   
  
}   
  
function smtp_debug($message)   
  
{   
  
if ($this->debug) {   
  
echo $message;   
  
}   
  
}   
  
}   
?>