Req #50210 [Com]: apache: PHP won't parse multipart/form-data if it was originally chunk encoded.

From: Date: Thu, 11 Mar 2010 04:57:06 +0000
Subject: Req #50210 [Com]: apache: PHP won't parse multipart/form-data if it was originally chunk encoded.
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=50210&edit=1

 ID:               50210
 Comment by:       evert at rooftopsolutions dot nl
 Reported by:      tyler dot thackray at gmail dot com
 Summary:          apache: PHP won't parse multipart/form-data if it was
                   originally chunk encoded.
 Status:           Open
 Type:             Feature/Change Request
 Package:          Feature/Change Request
 Operating System: Unix (probably all)
 PHP Version:      5.2.11

 New Comment:

I believe I might have ran across the same problem (logged as #51191).

In my case the problem is specific to using the FastCGI sapi. It doesn't
occur using mod_php.


Previous Comments:
------------------------------------------------------------------------
[2009-12-09 22:39:24] tyler dot thackray at gmail dot com

I haven't gotten any feedback regarding this issue in some time. Sorry,
that code is the most compact I can make it while still showing the
issue. Please let me know if you need anything else to evaluate this
bug.

------------------------------------------------------------------------
[2009-11-18 20:27:05] tyler dot thackray at gmail dot com

Here is the test code, please excuse its length but this is not a simple
scenario. The test involves two scripts "sender.php" and "receiver.php".


RECEIVER.PHP:
<?php
	$input = file_get_contents('php://input');
	$stdin = file_get_contents('php://stdin');

	print "FILES: ";
	print_r($_FILES);
	
	print("<br>POST: ");
	print_r($_POST);
	
	print("<br>input: ".$input);
	print("<br>stdin: ".$stdin);
?>

SENDER.PHP
<?php
	// when 'true' multipart data is NOT parsed, but is present at
php://stdio
	// when 'false' multipart is parsed into $_FILES and $_POST
	$chunked = false;

	$body1 =
	"--AaB03x\r\n".
	"Content-Disposition: form-data; name=\"forPOST\"\r\n".
	"\r\n".
	"1257880790\r\n".
	"--AaB03x\r\n";
	
	$body2 =
	"Content-Disposition: form-data; name=\"test_file\";
filename=\"test.file\"\r\n".
	"Content-Type: application/octet-stream\r\n".
	"\r\n".
	"binary data\r\n".
	"--AaB03x--";
	
	// change the POST to the location of your "receiver.php"
	$header = 
	"POST /test/receiver.php HTTP/1.1\r\n".
	"Connection: close\r\n".
	"Host: ".$_SERVER['HTTP_HOST']."\r\n".
	"Content-Type: multipart/form-data, boundary=AaB03x\r\n";
	
	if ($chunked){
		$body = dechex(strlen($body1))."\r\n".$body1."\r\n".
				dechex(strlen($body2))."\r\n".$body2."\r\n0\r\n\r\n";	
		$header .= "Transfer-Encoding: chunked\r\n";
	}
	else{
		$body = $body1 . $body2;
		$header .= 	"Content-Length: ".strlen($body)."\r\n"; 	
	}
	$header .= "\r\n";

	$final = $header . $body;
	print "<pre>".$final."<br><br>";
	
	$fp = fsockopen($_SERVER['HTTP_HOST'], 80, $errno, $errstr, 30);
	if (!$fp) {
		echo "$errstr ($errno)<br />\n";
	} 
	else {
		fwrite($fp, $final);
		while (!feof($fp)) {
			print fgets($fp, 128);
		}
		fclose($fp);
	}
	print "</pre>";
?>

------------------------------------------------------------------------
[2009-11-18 17:01:57] tyler dot thackray at gmail dot com

A simple HTML form would not transfer the data as "transfer-encoding:
chunked". Unfortunately, it requires 3rd party software to reproduce
this error short of creating a complex PHP script that can simulate both
chunked and multipart.

I will spend some time today on a socket-based example which sends data
from one page to another, but it is less than simple. The test I have is
fairly extensive, but I'll attempt to dumb it down.

------------------------------------------------------------------------
[2009-11-18 16:50:50] jani@php.net

Need reproduce script. Uploading simple form with files works just fine
for me under Apache2..

------------------------------------------------------------------------
[2009-11-17 22:49:28] tyler dot thackray at gmail dot com

Excuse me, I accidentally mixed up the Expect and Actual result.

------------------------------------------------------------------------


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    http://bugs.php.net/bug.php?id=50210


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