/ 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));
$body = preg_replace("/(^|(\r\n))(\.)/","\1.\3",$body);
$header .= "MIME-Version:1.0\r\n";
if($mailtype=="HTML"){
$header .= "Content-Type:text/html\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,$this->strip_comment($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."&gt;\n"); 
  } else { 
    $this->log_write("Error: Cannot send email to <".$rcpt_to."&gt;\n"); 
    $sent = FALSE; 
  } 
  fclose($this->sock); 
  $this->log_write("Disconnected from remote host\n"); 
} 
echo "<br>"; 
//echo $header; 
return $sent; 

}

/ Private Functions /

function smtp_send($helo,$to,$body = "")
{
if (!$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."&gt;")) { 
  return $this->smtp_error("sending MAIL FROM command"); 
} 

if (!$this->smtp_putcmd("RCPT","TO:<".$to."&gt;")) { 
  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)
{
$domain = preg_replace("/^.+@([^@]+)$/","\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,$this->time_out);
if (!($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 (!preg_match("/^[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 (preg_match($comment,$address)) {
$address = preg_replace($comment,$address);
}

return $address; 

}

function get_address($address)
{
$address = preg_replace("/([ \t\r\n])+/",$address);
$address = preg_replace("/^.<(.+)>.$/",$address);

return $address; 

}

function smtp_debug($message)
{
if ($this->debug) {
echo $message."
";
}
}

function get_attach_type($image_tag) { //

$filedata = array();

$img_file_con=fopen($image_tag,"r");
unset($image_data);
while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag))))
$image_data.=$tem_buffer;
fclose($img_file_con);

$filedata['context'] = $image_data;
$filedata['filename']= basename($image_tag);
$extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,"."));
switch($extension){
case ".gif":
$filedata['type'] = "image/gif";
break;
case ".gz":
$filedata['type'] = "application/x-gzip";
break;
case ".htm":
$filedata['type'] = "text/html";
break;
case ".html":
$filedata['type'] = "text/html";
break;
case ".jpg":
$filedata['type'] = "image/jpeg";
break;
case ".tar":
$filedata['type'] = "application/x-tar";
break;
case ".txt":
$filedata['type'] = "text/plain";
break;
case ".zip":
$filedata['type'] = "application/zip";
break;
default:
$filedata['type'] = "application/octet-stream";
break;
}
return $filedata;
}

} // end class
?>

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