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scd: First changes to implement a PIN cache.

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* scd/command.c (pincache_put): New.  Uses a dummy key for now.
(pincache_get): New.
* scd/app.c (select_application): Flush the PIN cache.
(scd_update_reader_status_file): Ditto.
(maybe_switch_app): Call the new prep_reselect function.
(app_write_learn_status): Ditto.
* scd/app-openpgp.c (cache_pin): New helper to cache a PIN.
(verify_chv2): Call it.
(verify_chv3): Call it.
(clear_chv_status): Call it.
(do_change_pin): Call it.

* scd/app-common.h (struct app_ctx_s): Add function 'prep_select'.
* scd/app-openpgp.c (do_prep_reselect): New stub function.
(app_select_openpgp): Set new stub function.
* scd/app-piv.c (do_prep_reselect): New stub function.
(app_select_piv): Set new stub function.

* scd/app-common.h (struct app_ctx_s): Add parameter ctrl to setattr,
sign, auth, decipher, and check_pin.  Change all implementations and
callers to pass such a parameter.
--

This is work in progress.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-01-07 18:45:33 +01:00
parent d5c00354bb
commit fbf97a7856
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
11 changed files with 418 additions and 85 deletions
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5
scd/scdaemon.h
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@ -137,6 +137,11 @@ gpg_error_t send_status_printf (ctrl_t ctrl, const char *keyword,
void send_keyinfo (ctrl_t ctrl, int data, const char *keygrip_str,
const char *serialno, const char *idstr);
void pincache_put (ctrl_t ctrl, int slot, const char *appname,
const char *pinref, const char *pin);
gpg_error_t pincache_get (ctrl_t ctrl, int slot, const char *appname,
const char *pinref, char **r_pin);
void popup_prompt (void *opaque, int on);
/* Take care: this function assumes that CARD is locked. */