ID:               32371
 Updated by:       [EMAIL PROTECTED]
 Reported By:      phpint-bkrrym at skrt dot org
-Status:           Assigned
+Status:           Closed
 Bug Type:         Filesystem function related
 Operating System: *
 PHP Version:      5CVS, 4CVS (2005-03-19)
 Assigned To:      pollita
 New Comment:

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

While that fixes the observed problem, it actually still leaves a bug
when filters are applied.  The root of the issue is how php://input
treats stream->position.

I've applied a fix to branches 4.4, 5.0, 5.1, and HEAD.

If you'd like to try applying just this patch to test it out on your
own system, it can be found at:

http://cvs.php.net/php-src/ext/standard/php_fopen_wrapper.c

HEAD: r-1.51
5.1: r-1.45.2.2
5.0: r-1.44.2.1
4.4: r-1.29.2.4.8.1


Previous Comments:
------------------------------------------------------------------------

[2005-08-11 16:15:29] [EMAIL PROTECTED]

Sara, could you take a look at this?
It seems ok, but I don't have time to verify it.

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

[2005-03-19 02:25:49] phpint-bkrrym at skrt dot org

Description:
------------
Full description and PATCH for 5-CVS and 4.3.10 are here:

http://thepathetic.com/jozef/php_input_stream_patch.html
http://thepathetic.com/jozef/php-5.0.3-input_stream.patch
http://thepathetic.com/jozef/php-4.3.10-input_stream.patch

Both 5 and 4.3.10 have the problem (same code).

Because of a subtle buffer index bug, in some cases, the php://input
stream returns incorrect data. 

Symptoms:

If the php://input is parsed in 4000-byte chunks, the first corruption
occurs at byte number 8193 (1-based). A chunk of the previous 192 bytes
repeats there.  The same corruption happens periodically in the data if
it is long enough.

The problem was discovered when directly parsing a POSTed XML with a
long text-node.

Interestingly enough, reading the contents of php://input with
file_get_contents and parsing the string works around the symptoms.

Reproduce code:
---------------
$s = simplexml_load_file('php://input');

sees the text node corrupted, whereas

$d = file_get_contents('php://input');
$s = simplexml_load_string($d);

does not.

Expected result:
----------------
should be the same in both cases

Actual result:
--------------
difference at byte number 8193 (1-based) from the begining of the xml.


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


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