Translate keysyms to ASCII

[Gabriel Duarte]

Anyway, does not work...
I just would like to know if the kernel offers me a conversion table. As I
said, I did it already by myself, but was just looking for a more stylish
way to do...

On Thu, Mar 29, 2012 at 7:42 PM, Jeff Haran <jharan at bytemobile.com> wrote:

> From: kernelnewbies-bounces at kernelnewbies.org [mailto:
> kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Gabriel Duarte
> Sent: Thursday, March 29, 2012 4:14 AM
> To: kernelnewbies at kernelnewbies.org
> Subject: Translate keysyms to ASCII
>
> Hello people,
>
>
> I working on a small proof of concept keylogger that works on kernel mode.
> It's parte of my studies of kernel development.
> I'm using the struct "keyboard_notifier_param" to get the keys pressed on
> the keyboard(s) attached to the system.
>
> At the end, I print the value, like this:
>
> printk(KERN_DEBUG "KEY== %i", param->value);
>
>
> According to the definition of the struct "keyboard_notifier_param" at
> http://lxr.free-electrons.com/source/include/linux/keyboard.h#L37, the
> field value is a  "keycode, unicode value or keysym".
>
> For example, when I press the key a, I get the value 30, but I would like
> tranlate it to the ASCII. I managed to create a translation table by
> myself, but I think there is another way more stylish to do this, or not? I
> googled a lot but could not find a consistent answer.
>
> Any help is appreciated,
>
> Gabriel.
>
> --
> Gabriel Duarte
> Linux User #471185
> France / Grenoble - Rhône Alpes
> http://genericdev.wordpress.com/
>
> The term I think you want to search for is "PC keyboard scan code". This
> link seems to cover it pretty well:
>
> http://www.quadibloc.com/comp/scan.htm
>
> Jeff Haran
>
>
>


-- 
Gabriel Duarte
Linux User #471185
France / Grenoble - Rhône Alpes
http://genericdev.wordpress.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20120331/820fa146/attachment.html