ID: 50210
User updated by: tyler dot thackray at gmail dot com
Reported By: tyler dot thackray at gmail dot com
Status: Open
Bug Type: Feature/Change Request
Operating System: Unix (probably all)
PHP Version: 5.2.11
New Comment:
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.
Previous Comments:
------------------------------------------------------------------------
[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.
------------------------------------------------------------------------
[2009-11-17 22:46:23] tyler dot thackray at gmail dot com
Description:
------------
When POSTing multipart/form-data to a PHP script, PHP will
automatically parse the data into $_FILES and $_POST super globals. In
this case, php://stdio will be empty.
Apache 2 supports chunked encoded requests. When sending
multipart/form-data with "transfer-encoding: chunked" Apache 2 will
dechunk the request and pass it onto PHP. However, in this case PHP will
NOT parse the multipart/form-data and the RAW data can be seen at
php://stdio. I've examined the headers and the only difference between
the working and not working is the "transfer-encoding: chunked"; the
"content-type: multipart/form-data, boundry=XXXX" is still present.
Perhaps this is an issue with mod_php? Perhaps the chunked header is
confusing PHP? In any case, I would expect PHP to parse the
multipart/form-data regardless if it was originally chunked or not, as
Apache should take care of the chunks.
It's interesting to note that the headers can be combined with
php://stdio and resent to the same script (not chunked but still
multipart/form-data encoded) and PHP will actually parse it.
There's no easy way to provide sample code for this issue, suffice it
to say that if you send multipart/form-data using chunked encoding to
any PHP script, you will find that $_FILES and $_POST are empty and the
raw data is present at php://stdio.
Reproduce code:
---------------
<?php
print_r($_FILES);
print_r($_POST);
?>
Expected result:
----------------
"Array() Array()"
Actual result:
--------------
The $_FILES and $_POST super global should contain parsed data.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=50210&edit=1