From: jason at merchant dot to
Operating system: Windows XP
PHP version: 5.1.2
PHP Bug Type: Apache2 related
Bug description: mod_ext_filter causes a filtered php page to hang with calls
to eval()
Description:
------------
I am using Apache2's mod_ext_filter to modify the output filtering of html
and php pages. It works fine on html pages. On php pages with to many calls
to eval(), the filter will cause it to hang until the script times out.
Within the 30 second timeout my filter was only able to return the first
line unmodified.
Reproduce code:
---------------
//******** httpd.conf directives *************/
ExtFilterDefine myfilter mode=output intype=text/html cmd="C:/php/php.exe
C:/myfilter.php"
SetOutputFilter myfilter
/////////////////////////////////////////////////////
//*** C:/myfilter.php(The filter called by php.exe) **/
<?php
$fp = fopen("php://stdin", "r");
while (!feof($fp)) {
echo fgets($fp);
}
fclose($fp);
?>
/////////////////////////////////////////////////////
//******** the php page that will be filtered *******/
// This script was copied from a previous bug report with a similar issue
in php3 here: http://bugs.php.net/bug.php?id=3744
<?php
$b = "";
for ($i = 1; $i < 10000; $i++)
$b .= "b";
echo "b: $b\n";
for ($i = 1; $i < 10000; $i++)
{
echo "i: $i\n"; flush();
eval("\$a = '$b';");
}
?>
/////////////////////////////////////////////////////
Expected result:
----------------
when run with the filter turned off I get the expected echoed information.
Actual result:
--------------
The script hangs until it reaches the maximum execution time.
--
Edit bug report at http://bugs.php.net/?id=37064&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=37064&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=37064&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=37064&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=37064&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=37064&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=37064&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=37064&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=37064&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=37064&r=support
Expected behavior: http://bugs.php.net/fix.php?id=37064&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=37064&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=37064&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=37064&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=37064&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=37064&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=37064&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=37064&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=37064&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=37064&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=37064&r=mysqlcfg
