<?php

	error_reporting(E_ALL);

	/** START CONFIGURATION **/

	$config['mail-to'] = "hilda.tellioglu@tuwien.ac.at";
	$config['mail-subject'] = "international symposium from understanding the present to envisioning the future";
	$config['upload-dir'] = "./upload/"; // needs write permission
	$config['forward-url-success'] = "./thankyou.html";
	$config['forward-url-failure'] = "./failure.html";

	/** END CONFIGURATION **/

	function mail_attachment($filename, $path, $mailto, $from_mail, $from_name, $replyto, $subject, $message) {
		if(!empty($filename)){
			$file = $path.$filename;
			$file_size = filesize($file);
			$handle = fopen($file, "r");
			$content = fread($handle, $file_size);
			fclose($handle);
			$content = chunk_split(base64_encode($content));
			$name = basename($file);
		}
			$uid = md5(uniqid(time()));
		$header = "From: ".$from_name." <".$from_mail.">\r\n";
		$header .= "Reply-To: ".$replyto."\r\n";
		$header .= "MIME-Version: 1.0\r\n";
		$header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
		$header .= "This is a multi-part message in MIME format.\r\n";
		$header .= "--".$uid."\r\n";
		$header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
		$header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
		$header .= $message."\r\n\r\n";
		if(!empty($filename)){
			$header .= "--".$uid."\r\n";
			$header .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n"; // use diff. types here
			$header .= "Content-Transfer-Encoding: base64\r\n";
			$header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
			$header .= $content."\r\n\r\n";
			$header .= "--".$uid."--";
		}
		return mail($mailto, $subject, "", $header);
	}
	$from = $_POST['email'];
	$from_name = $_POST['lastname']." ".$_POST['firstname'];
	$message = "From: ".$_POST['lastname']." ".$_POST['firstname']." (".$_POST['email'].")"."\n";
	if(isset($_FILES["Datei"])) $_FILES["file"] = $_FILES["Datei"];
	if(isset($_POST['registration'])) {
		$message .= "REGISTRATION\n";
		$config['mail-subject'] = "REGISTRATION: ".$config['mail-subject'];
	} else {
		$message .= "SUBMISSION\n";
		$config['mail-subject'] = "SUBMISSION: ".$config['mail-subject'];
		$fileinfo = pathinfo($_FILES["file"]["name"]);
		if(!isset($fileinfo['filename'])) {
			$fileinfo['filename'] = basename($fileinfo['basename'],$fileinfo['extension']);
		        $filename = $fileinfo['filename'].time().".".$fileinfo['extension'];
			}
		else {
			$filename = null;
		}
		$message .= "Title of Presentation: ".$_POST['titleofpresentation']."\n";
		$message .= "Abstract: ".$_POST['abstract']."\n";
		$message .= "Keywords: ".$_POST['keywords']."\n";
		$message .= "Paper type: ".$_POST['papertype']."\n";
		if(!move_uploaded_file($_FILES["file"]["tmp_name"], $config['upload-dir'].$filename )) {
			header("Location: ".$config['forward-url-failure']);
			exit();
			}
	}
	$message .= "Comments: ".$_POST['comment']."\n";
	if(mail_attachment($filename, $config['upload-dir'], $config['mail-to'], $from, $from_name, $from, $config['mail-subject'], $message)) {
		header("Location: ".$config['forward-url-success']);
	} else {
		header("Location: ".$config['forward-url-failure']);
	}
?>