#48419 [Fbk->Opn]: non-portable CGI code (Empty POST data)
ID: 48419
User updated by: juro at shaw dot ca
Reported By: juro at shaw dot ca
-Status: Feedback
+Status: Open
Bug Type: CGI related
Operating System: Windows XP
PHP Version: 5.2.10RC1
New Comment:
Using Windows XP OS we use a generic HTTP server (not Apache, not IIS,
etc.) with CGI/1.1 support (no FCGI).
PHP script fills a form and uses:
CONTENT_TYPE = application/x-www-form-urlencoded
REQUEST_METHOD = POST
to post some filled form data. The HTTP server launches PHP-CGI.EX and
writes the posted data to a handle that was redirected to be
PHP-CGI.EXE STDIN. PHP-CGI.EXE does receive the data, which can be
viewed correctly using the code:
print "$HTTP_RAW_POST_DATA";
print_r($_SERVER["HTTP_RAW_POST_DATA"]);
Both printouts show correctly (urlencoded) posted data.
However, the $_POST array is empty:
if (empty($_POST))
{
echo "POST empty !!! (No data was submitted)";
}
Previous Comments:
[2009-05-31 13:57:24] j...@php.net
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php
If you can provide more information, feel free to add it
to this bug and change the status back to "Open".
Thank you for your interest in PHP.
--------
[2009-05-28 20:36:32] juro at shaw dot ca
Description:
Using a generic web server with a simple CGI support (running on
Windows XP), I fail to obtain any $_POST data. However, raw post data
are OK. Raw post data is sent to the PHP-CGI.exe via redirected pipe
handle. PHP-CGI reads correctly posted raw data using stdin.
I suspect the culprit may be with the following PHP source code:
File:cgi_main.c
Routine:static int sapi_cgi_read_post(char *buffer, uint count_bytes
TSRMLS_DC)
...
tmp_read_bytes = read(0, buffer + read_bytes, count_bytes -
read_bytes);
...
Low level i/o functions read,write,open are not 100% portable.
The code is most like meant to read stdin. Assuming that file
descriptor for stdin is numerically equal to 0 on all platforms is
wrong.
The code should be probably something like this
tmp_read_bytes = read(_fileno(stdin), buffer + read_bytes, count_bytes
- read_bytes);
--
Edit this bug report at http://bugs.php.net/?id=48419&edit=1
#48419 [NEW]: non-portable CGI code (Empty POST data)
From: juro at shaw dot ca Operating system: Windows XP PHP version: 5.2.10RC1 PHP Bug Type: CGI related Bug description: non-portable CGI code (Empty POST data) Description: Using a generic web server with a simple CGI support (running on Windows XP), I fail to obtain any $_POST data. However, raw post data are OK. Raw post data is sent to the PHP-CGI.exe via redirected pipe handle. PHP-CGI reads correctly posted raw data using stdin. I suspect the culprit may be with the following PHP source code: File:cgi_main.c Routine:static int sapi_cgi_read_post(char *buffer, uint count_bytes TSRMLS_DC) ... tmp_read_bytes = read(0, buffer + read_bytes, count_bytes - read_bytes); ... Low level i/o functions read,write,open are not 100% portable. The code is most like meant to read stdin. Assuming that file descriptor for stdin is numerically equal to 0 on all platforms is wrong. The code should be probably something like this tmp_read_bytes = read(_fileno(stdin), buffer + read_bytes, count_bytes - read_bytes); -- Edit bug report at http://bugs.php.net/?id=48419&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48419&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48419&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48419&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48419&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48419&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48419&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48419&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48419&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48419&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48419&r=support Expected behavior: http://bugs.php.net/fix.php?id=48419&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48419&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48419&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48419&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48419&r=php4 Daylight Savings:http://bugs.php.net/fix.php?id=48419&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48419&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48419&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48419&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48419&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48419&r=mysqlcfg
