[TYPO3-dev] Need a good solution for UTF-8 encoding in $_GET and $_POST variables through Ajax calls

[Rob Vonk]

Hi there,

I'm working on this bug:

http://bugs.typo3.org/view.php?id=4098

The bug is that the clickmenu (clickmenu.js) uses an ajax call to get a 
popup on a file. The filename is encoded in javascript with the function 
encodeURIComponent() (as it should with all ajax calls). The 
encodeURIComponent() function encodes it always in UTF-8.

Then when it's handled by alt_clickmenu.php the filename is read by this 
command:

$this->iParts[0] = t3lib_div::_GP('table');

The _GP function strips the slashes and thats it.

Then in the function printFileClickMenu the still encoded filename is used 
to check if the file exists. All works well until a filename with umlaut 
(or other high character) is used.

To make this part work, we should use:

$this->iParts[0] = utf8_decode(urldecode($_GET['table']));

This handles the check on file_exists. But not for the items in the 
clickenu. For example: The show_item.php uses $this->table = 
t3lib_div::_GET('table');

And the same error occurs.

A good solution would be that all GET's and POSTS's from ajax calls would 
be utf8_decoded.

I was wondering if it's usefull to create new functions for

- t3lib_div::_GP()
- t3lib_div::_GET()
- t3lib_div::_POST()

That handles these variables

Something like:

- t3lib_div::_GP_UTF8()
- t3lib_div::_GET_UTF8()
- t3lib_div::_POST_UTF8()

Or

- t3lib_div::_GP_AJAX()
- t3lib_div::_GET_AJAX()
- t3lib_div::_POST_AJAX()

Or should we adapt the original functions so that they can detect and 
handle UTF-8 automaticly? That is a major change..

What are your ideas?

Regards,

Rob