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scd: Add an re-select mechanism to switch apps.

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* scd/app-common.h (struct app_ctx_s): Add func ptr 'reselect'.
* scd/app-piv.c (do_reselect): New.
(app_select_piv): Move AID constant to file scope.
* scd/app-openpgp.c (do_reselect): New.
(app_select_openpgp): Move AID constant to file scope.
* scd/app.c (apptype_from_name): New.
(check_application_conflict): Check against all apps of the card.
Always set current_apptype.
(select_additional_application): New.
(maybe_switch_app): New.
(app_write_learn_status, app_readcert, app_readkey, app_getattr)
(app_setattr, app_sign, app_auth, app_decipher, app_writecert)
(app_writekey, app_genkey, app_change_pin, app_check_pin): Use it here.
(app_do_with_keygrip): Force reselect on success.
(app_new_register): Move setting of CURRENT_APPTYPE to ...
(select_application): here so that it will be set to the requested
card.
* scd/command.c (open_card_with_request): Select additional
application if possible.
--

Noet that we will likely need to rework this even more so to get well
defined semantics for card access.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-06-25 08:30:04 +02:00
parent d7d1ff4557
commit d803b3bb3c
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GPG key ID: E3FDFF218E45B72B
11 changed files with 274 additions and 49 deletions
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2
scd/app-common.h
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@ -132,6 +132,7 @@ struct app_ctx_s {
struct app_local_s *app_local; /* Local to the application. */
struct {
void (*deinit) (app_t app);
gpg_error_t (*reselect) (app_t app, ctrl_t ctrl);
gpg_error_t (*learn_status) (app_t app, ctrl_t ctrl, unsigned int flags);
gpg_error_t (*readcert) (app_t app, const char *certid,
unsigned char **cert, size_t *certlen);
@ -233,6 +234,7 @@ gpg_error_t card_reset (card_t card, ctrl_t ctrl, int send_reset);
gpg_error_t select_application (ctrl_t ctrl, const char *name, card_t *r_app,
int scan, const unsigned char *serialno_bin,
size_t serialno_bin_len);
gpg_error_t select_additional_application (ctrl_t ctrl, const char *name);
char *get_supported_applications (void);
card_t card_ref (card_t card);