mail() and CRLF

rohithmr

So i was trying to send MIME email with the mail function instead of using sockets. But i noticed sumtin strange that wont let me send proper emails.

this is my code:

<?php
if (!isset($_POST['submit']) or $_POST['submit']!="submit") {
?>
<html>
<body>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post" enctype="multipart/form-data">
<textarea name="msg" cols="75" rows="20"></textarea><br /> 
<input type="file" name="filename"> 
<input type="submit" name="submit" value="submit">
</form>
</body>
</html>
<?php
} else {
  function sendmsg($to, $subject, $text, $from, $file, $type, $name) { 
    $fp      = fopen($file,"rb");
    $content = fread($fp,filesize($file));
    $content = chunk_split(base64_encode($content));
    $uid     = md5(uniqid(time()));
    $header  = Array();

$header[]  = "From: $from\r\nReply-To: $from\r\n";
$header[]  = "Return-Path: [email]postmaster@ndngangstaproductionz.com[/email]\r\n";
$header[]  = "MIME-Version: 1.0\r\n";
$header[]  = "Content-Type: multipart/mixed;\r\n";
$header[]  = "\tboundary=\"$uid\";\r\n";
$header[]  = "Content-Transfer-Encoding: 7bit\r\n";
$header[]  = "\r\n";
$header[]  = "This is a MIME encoded Message.\r\n";
$header[]  = "\r\n";
$header[]  = "--$uid\r\n";
$header[]  = "Content-Type: text/plain; charset=us-ascii\r\n";
$header[]  = "Content-Transfer-Encoding: 7bit\r\n";
$header[]  = "\r\n";
$header[]  = "$text\r\n";
$header[]  = "\r\n";

$header[]  = "--$uid\r\n";
//
$header[]  = "Content-Type: $type; name=\"$name\"\r\n";
$header[]  = "Content-Transfer-Encoding: base64\r\n";
$header[]  = "Content-Disposition: attachment; filename=\"$name\"\r\n";
$header[]  = "\r\n";
$header[]  = "$content\r\n"."\r\n";

$header[]  = "\r\n--$uid--\r\n";
echo '<pre>'.join("", $header)."\r\n</pre>";
mail($to, $subject, "", join("", $header)."\r\n");

return true; 
}

if (!sendmsg("postmaster@ndngangstaproductionz.com", "Attachment TEst", $_POST['msg'], "attacher@home", $_FILES['filename']['tmp_name'], $_FILES['filename']['type'], $_FILES['filename']['name'])) die("did not work");

}
?>

For this code to work properly, there shudd be a blank line right after each 'Content-Transfer-Encoding:' header and right before the 'boundary' seperators. When i echo my header, everything is fine, but once i pass it thru the mail function, the blank lines are ripped off.

Is der a way to avoid this without using anything other than mail()?. If you don't completely get my question, I will glad to explain it more.

thnx

rohithmr

After endless hours, :o I finally figured out why the new lines did not work.

the header parameter of the mail() function strips all blank lines. So all I gave on the header parameter was the FROM, Return-Path and other 'simple' headers.

Then on the body parameter of the mail function if u give a '\r\n', on a windows machine, it will be interpreted as 2 line breaks. So the line breaker on Win32 is '\n'.

TO sum up, I gave all the complex boundary and base64 encoded attachments in the body argument with '\n' as the line breaker and gave the simple headers in the header argument of mail(with '\n' or '\r\n', it does not really matter here).

aii, pZ

P.S: I am attaching a workin copy of the code, incase sumbody wants to take a look.