Chamilo LMS

Upgrading Firefox to v17 has generated a change in the User-Agent string, which is used by several JavaScript applications to try and locate browsers capabilities.

This change, from something like this:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0

...to something like this:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0
(as reported here: https://groups.google.com/forum/?fromgroups=#!topic/mozilla.engagement.developers/jzdH7q4JhoM)

breaks this detection by FCKEditor. As such, it will stop working when you use it with Firefox 17 (as reported here: https://support.mozilla.org/es/questions/942438 )

To fix this, the code of FCKeditor should be updated to suit the change. Locate the main/inc/lib/fckeditor/fckeditor.php file and go to line 61. Change this code:

    else if ( strpos($sAgent, 'Gecko/') !== false )
    {
        $iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;
        return ($iVersion >= 20030210) ;
    }

to this code:

    else if ( strpos($sAgent, 'Gecko/') !== false )
    {
        $iVersion = substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;
        if ( preg_match('/^\d{2,3}\.\d{1,4}\s/', $iVersion) ) {
          return true;
        }
        $iVersion = (int)$iVersion;
        return ($iVersion >= 20030210) ;
    }

This hasn't been tester in production yet (couldn't find a FF17 around), so please report if it works for you.