scd: Support "acknowledge button" feature.

* scd/apdu.c (set_prompt_cb): New member function.
(set_prompt_cb_ccid_reader): New function.
(open_ccid_reader): Initialize with set_prompt_cb_ccid_reader.
(apdu_set_prompt_cb): New.
* scd/app.c (lock_app, unlock_app): Add call to apdu_set_prompt_cb.
* ccid-driver.c (ccid_set_prompt_cb): New.
(bulk_in): Call ->prompt_cb when timer extension.
* scd/command.c (popup_prompt): New.

--

Cherry-picked master commit of:
	7a5a4c4cac8709f7c413e94cd0b40f4123baa1e5

Signed-off-by: NIIBE Yutaka <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/scd/app.c b/scd/app.c
index f3f1205f8..a82db26cd 100644
--- a/scd/app.c
+++ b/scd/app.c
@@ -67,6 +67,7 @@ lock_app (app_t app, ctrl_t ctrl)
     }
 
   apdu_set_progress_cb (app->slot, print_progress_line, ctrl);
+  apdu_set_prompt_cb (app->slot, popup_prompt, ctrl);
 
   return 0;
 }
@@ -76,6 +77,7 @@ static void
 unlock_app (app_t app)
 {
   apdu_set_progress_cb (app->slot, NULL, NULL);
+  apdu_set_prompt_cb (app->slot, NULL, NULL);
 
   if (npth_mutex_unlock (&app->lock))
     {