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scd: Track the currently selected app.

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* scd/scdaemon.h (struct server_control_s): Add 'current_apptype'.
* scd/command.c (scd_clear_current_app): New.
* scd/app.c (app_new_register): Set it.
(deallocate_card): Clear it.
--

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-06-21 10:47:45 +02:00
parent 43dcf93407
commit 91e2931caa
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
3 changed files with 29 additions and 3 deletions
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9
scd/app.c
View File

@ -519,9 +519,13 @@ app_new_register (int slot, ctrl_t ctrl, const char *name,
}
card->periodical_check_needed = periodical_check_needed;
card->next = card_top;
card_top = card;
/* If no current apptype is known for this session, set it now. */
if (!ctrl->current_apptype)
ctrl->current_apptype = app->apptype;
unlock_card (card);
return 0;
}
@ -684,8 +688,9 @@ deallocate_card (card_t card)
xfree (a);
}
xfree (card->serialno);
scd_clear_current_app (card);
xfree (card->serialno);
unlock_card (card);
xfree (card);
}

17
scd/command.c
View File

@ -2069,6 +2069,21 @@ scd_command_handler (ctrl_t ctrl, int fd)
}
/* Clear the current application info for CARD from all sessions.
* This is used while deallocating a card. */
void
scd_clear_current_app (card_t card)
{
struct server_local_s *sl;
for (sl=session_list; sl; sl = sl->next_session)
{
if (sl->ctrl_backlink->card_ctx == card)
sl->ctrl_backlink->current_apptype = APPTYPE_NONE;
}
}
/* Send a line with status information via assuan and escape all given
buffers. The variable elements are pairs of (char *, size_t),
terminated with a (NULL, 0). */
@ -2181,7 +2196,7 @@ popup_prompt (void *opaque, int on)
/* Helper to send the clients a status change notification. Note that
* this fucntion assumes that APP is already locked. */
* this function assumes that APP is already locked. */
void
send_client_notifications (card_t card, int removal)
{

6
scd/scdaemon.h
View File

@ -106,6 +106,11 @@ struct server_control_s
application context. */
struct card_ctx_s *card_ctx;
/* The currently active application for this context. We need to
* knw this for cards which are abale to swicth on the fly between
* apps. */
apptype_t current_apptype;
/* Helper to store the value we are going to sign */
struct
{
@ -122,6 +127,7 @@ const char *scd_get_socket_name (void);
/*-- command.c --*/
gpg_error_t initialize_module_command (void);
int scd_command_handler (ctrl_t, int);
void scd_clear_current_app (card_t card);
void send_status_info (ctrl_t ctrl, const char *keyword, ...)
GPGRT_ATTR_SENTINEL(1);
void send_status_direct (ctrl_t ctrl, const char *keyword, const char *args);