php email

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;   
  
var $sender;   
  
/* Private Variables */  
var $sock;   
  
/* Constractor */  
  
function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass,$sender)   
{   
 $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->sender = $sender;   
  
 $this->host_name = "localhost"; //is used in HELO command    
    
 $this->log_file = "";   
  
 $this->logs = ""; //記錄跟服務器的交互過程   
  
 $this->sock = FALSE;   
}   
  
/* Main Function */  
  
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")   
{   
 $sent = TRUE;   
    
 $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/r/n";   
 }   
  
 $header .= "To: ".$to."/r/n";   
  
 if ($cc != "") {   
  
  $header .= "Cc: ".$cc."/r/n";   
  
 }   
  
 //$header .= "From: $from<".$from.">/r/n";   
  
 $header .= "From: ".$from."/r/n";   
  
 $header .= "Subject: ".$subject."/r/n";   
  
 $header .= $additional_headers;   
  
 $header .= "Date: ".date("r")."/r/n";   
  
 $header .= "X-Mailer: 72e.net (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)));   
  
 }   
  
    
 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 AUTH command");   
  
  }   
  
  if (!$this->smtp_putcmd("", base64_encode($this->pass))) {   
  
   return $this->smtp_error("sending AUTH command");   
  
  }   
  
 }   
  
 #   
  
 //if (!$this->smtp_putcmd("MAIL", "FROM:".$from."")) {   
    if (!$this->smtp_putcmd("MAIL", "FROM:<".$this->sender.">")) {   
     
  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));   
  
 //echo "response=".$response."/r/n";   
  
 $this->smtp_debug($response."/n");   
  
 //echo "ereg 23 ==".ereg("^[23]", $response)."/n";   
  
 if (!ereg("^[23]", $response)) {   
  
  //echo "@@@@@";   
  
  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");   
  
 //echo "cmd=".$cmd."/r/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->logs .= $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;   
  
 }   
  
}   
  
} // end class