| program/steps/mail/get.inc |
| |
| This file is part of the Roundcube Webmail client |
- | Copyright (C) 2005-2009, The Roundcube Dev Team |
+ | Copyright (C) 2005-2011, The Roundcube Dev Team |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
- $Id: get.inc 5514 2011-11-30 11:35:43Z alec $
+ $Id: get.inc 5635 2011-12-21 10:07:42Z alec $
*/
exit;
-
-/**
- * PHP stream filter to detect html/javascript code in attachments
- */
-class rcube_content_filter extends php_user_filter
-{
- private $buffer = '';
- private $cutoff = 2048;
-
- function onCreate()
- {
- $this->cutoff = rand(2048, 3027);
- return true;
- }
-
- function filter($in, $out, &$consumed, $closing)
- {
- while ($bucket = stream_bucket_make_writeable($in)) {
- $this->buffer .= $bucket->data;
-
- // check for evil content and abort
- if (preg_match('/<(script|iframe|object)/i', $this->buffer))
- return PSFS_ERR_FATAL;
-
- // keep buffer small enough
- if (strlen($this->buffer) > 4096)
- $this->buffer = substr($this->buffer, $this->cutoff);
-
- $consumed += $bucket->datalen;
- stream_bucket_append($out, $bucket);
- }
-
- return PSFS_PASS_ON;
- }
-}
-