Hi! Am 11.10.2010 20:30, schrieb Howard Chu: > Rich Megginson wrote: >> Silvan Marco Fin wrote: >>> 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. To clarify: GUI callback is too specific. In any application requesting PINs to access some sort of crypto device, there would be the need of a callback function which can be registered to openldap in the same way in the same way openldap registers its own functions to the crypto library (PK11_SetPasswordFunc() in this case), since we might not read from STDIN and file is insecure, as is stated in the comments in tlsm_get_pin(). >> How would this work? Would you pass in a callback function with your >> private context, and this callback function would be called with the >> current MozNSS context + your provided context? What would be the >> possible return values from your callback? What should the code do >> depending upon each return value? Is there currently a way, via the >> OpenLDAP API, to pass in such a function and context? The parameters to the PK11_SetPasswordFunc() are described in http://www.mozilla.org/projects/security/pki/nss/ref/ssl/pkfnc.html#1023128 Instead of tlsm_pin_prompt() the applications callback function should be registered. > For what it's worth, we need to add this feature for > sasl_interactive_bind as well. Thus far, for the ldap_sasl interface all > of the callback parameters have been passed on the function invocation, > as opposed to being set by a separate ldap_set_option(). It makes for a > clunky function signature, but seems safest in terms of re-entrancy... Is there a roadmap for these adaptions or can you give any hint, on wether this will be done in the near future? Kind regards, Silvan
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