support for arbitrary PKCS11 pin input method

Hi!

I searched through tls_m.c for means to enter the token PIN for a PKCS11 token. I found a call to PK11_SetPasswordFunc(). The callback is set to tlsm_pin_prompt(), which by itself uses tlsm_get_pin(). tlsm_get_pin() only supports reading the PIN from file or via STDIN. To be usable within any form of gui, there would have to be some method to pass a GUI callback to ask for the PIN.

Do you plan on implementing such a feature in the near future or is there a proposed way of setting such a callback method?

Kind regards, Silvan