/usr/share/php/Horde/Stream/Filter/Null.php is in php-horde-stream-filter 2.0.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Stream filter class to remove null (\0) values.
*
* Usage:
* stream_filter_register('horde_null', 'Horde_Stream_Filter_Null');
* stream_filter_[app|pre]pend($stream, 'horde_null',
* [ STREAM_FILTER_[READ|WRITE|ALL] ],
* [ $params ]);
*
* $params is an array that can contain the following:
* - replace: (string) The string to use to replace null characters with.
* DEFAULT: ''
*
* Copyright 2012-2016 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Michael J Rubinsky <mrubinsk@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Stream_Filter
*/
class Horde_Stream_Filter_Null extends php_user_filter
{
/**
* Search array.
*
* @var mixed
*/
protected $_search = "\0";
/**
* Replacement data
*
* @var mixed
*/
protected $_replace;
/**
* @see stream_filter_register()
*/
public function onCreate()
{
$this->_replace = isset($this->params->replace)
? $this->params->replace
: '';
return true;
}
/**
* @see stream_filter_register()
*/
public function filter($in, $out, &$consumed, $closing)
{
while ($bucket = stream_bucket_make_writeable($in)) {
$bucket->data = str_replace($this->_search, $this->_replace, $bucket->data);
$consumed += $bucket->datalen;
stream_bucket_append($out, $bucket);
}
return PSFS_PASS_ON;
}
}
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