#46026 [NEW]: bz2_decompress_filter tries to decompress after end of stream
From: Keisial at gmail dot com
Operating system:
PHP version: 5.2CVS-2008-09-08 (snap)
PHP Bug Type: Filter related
Bug description: bz2_decompress_filter tries to decompress after end of stream
Description:
------------
If the input is larger than the bzip2 stream, bz2_decompress_filter tries
to continue decompressing after it has received a BZ_STREAM_END, so bzlib
returns BZ_SEQUENCE_ERROR and the stream filter finalises with
PSFS_ERR_FATAL, getting no output.
Reproduce code:
---------------
bz2Decompress.php:
<?php
$f = fopen($argv[1], "rb");
stream_filter_append($f, "bzip2.decompress");
fpassthru($f);
fclose($f);
?>
$ echo 'Hello world' > hello.txt
$ bzip2 hello.txt
$ php bz2Decompress.php hello.txt.bz2
Hello world
$ echo '!' >> hello.txt.bz2
$ php bz2Decompress.php hello.txt.bz2
/* No output */
Expected result:
----------------
At least the correctly read data should be returned.
Two things can be done on receiving a BZ_STREAM_END:
-Setting an EOF flag and remove any further incoming data (allow to
continue reading if the filter is removed?).
-Reinitialising the decompressing library (approach of the bzip2 utility)
so concatenated bzip2 streams can be unbzipped as the concatenation of its
output.
--
Edit bug report at http://bugs.php.net/?id=46026&edit=1
--
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46026&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46026&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46026&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=46026&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=46026&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=46026&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=46026&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=46026&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=46026&r=support
Expected behavior: http://bugs.php.net/fix.php?id=46026&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=46026&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=46026&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=46026&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46026&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46026&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=46026&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=46026&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=46026&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=46026&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=46026&r=mysqlcfg
Thread (9 messages)
- Keisial at gmail dot com