<?
//mime-mail.inc
class mime_mail {
  var $parts;
  var $to;
  var $from;
  var $subject;
  var $body;
  var $headers;
  
  //costruttore vuoto
  function mime_mail() {
    $this->parts=array();
	$this->to= "";
	$this->from= "";
	$this->subject= "";
	$this->body= "";
	$this->headers= "";
  }//fine mime_mail()
  
  //la seguente funzione aggiunge un allegato all'oggetto mail
  function add_attachment($message,$name= "",$ctype= "application/octetstream",$encode='base64') {
    $this->parts[]=array(
	                "ctype"=>$ctype,
					"message"=>$message,
					"encode"=>$encode,
					"name"=>$name);
  }//fine add_attachment()
  
  //funzione che costruisce le parti messaggio di una mail multiparte
  function build_message($part) {
    $message=$part[ "message"];
	$message=chunk_split(base64_encode($message));
	$encoding= "base64";
	return "Content-Type: ".$part[ "ctype"].
	       ($part[ "name"]? "; name = \"".$part[ "name"]."\"" : "").
		   "\nContent-Transfer-Encoding: $encoding\n\n$message\n";  
  }//fine build_message()
  
  //funzione che costruisce la mail multiparte
  function build_multipart() {
    $boundary= "b".md5(uniqid(time()));
	$multipart="Content-Type : multipart/mixed; boundary=$boundary\n\n".
	           "This is a MIME encoded message.\n\n--$boundary";
    for($i=sizeof($this->parts)-1;$i>=0;$i--) {
	   $multipart.="\n".$this->build_message($this->parts[$i])."--$boundary";
	}//fine for			      
    return $multipart.="--\n";    
  }// fine build_multipart
  
  //funzione che ritorna la mail costruita
  function get_mail($complete=true) {
    $mime="";
	if(!empty($this->from))
	  $mime.= "From: ".$this->from."\n";
	if(!empty($this->headers))
	  $mime.=$this->headers."\n";  
  
    if($complete) {
      if(!empty($this->to)) {
	  $mime.= "To: ".$this->to."\n";
	  }
	  if(!empty($this->subject)) {
	  $mime.= "Subject: ".$this->subject."\n";	
	  }
	}//fine if($complete)  
	
	if(!empty($this->body))
	  $this->add_attachment($this->body,"","text/html; charset=iso-8859-1");
	  
	$mime.="MIME-Version: 1.0\n".$this->build_multipart();
	
	return $mime;  
  }//fine get_mail()
  
  //funzione che invia la mail
  function send() {
     $mime=$this->get_mail(false);
	 return mail($this->to,$this->subject, "", $mime);
  }//fine send()
}//fine classe
?>