scd: Cleanup SERIALNO protocol.

* scd/app.c (app_get_serial_and_stamp): Remove.
(app_get_serialno): New.
(app_write_learn_status): Use send_status_direct.
(app_getattr): Use app_get_serialno for SERIALNO and
send with send_status_direct.
* scd/app-openpgp.c (do_getattr): Likewise.
* scd/command.c (cmd_serialno): Don't send TIMESTAMP of 0.
(cmd_learn): Likewise.  Don't inquire with TIMESTAMP of 0.

--

In the SERIALNO protocol, timestamp used to be considered, but had never
used at all.  In the new implementation, removed card/token is always
detected and connection becomes invalid, no timestamp is required any
more.  Examined scute and poldi as well for this protocol change.

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

1 files changed, 8 insertions, 17 deletions

diff --git a/scd/app-openpgp.c b/scd/app-openpgp.c
index 4d8b1bc9e..71c9e1b83 100644
--- a/scd/app-openpgp.c
+++ b/scd/app-openpgp.c
@@ -978,21 +978,13 @@ do_getattr (app_t app, ctrl_t ctrl, const char *name)
   if (table[idx].special == -1)
     {
       /* The serial number is very special.  We could have used the
-         AID DO to retrieve it, but we have it already in the app
-         context and the stamp argument is required anyway which we
-         can't by other means. The AID DO is available anyway but not
-         hex formatted. */
-      char *serial;
-      time_t stamp;
-      char tmp[50];
-
-      if (!app_get_serial_and_stamp (app, &serial, &stamp))
+         AID DO to retrieve it.  The AID DO is available anyway but
+         not hex formatted. */
+      char *serial = app_get_serialno (app);
+
+      if (serial)
         {
-          sprintf (tmp, "%lu", (unsigned long)stamp);
-          send_status_info (ctrl, "SERIALNO",
-                            serial, strlen (serial),
-                            tmp, strlen (tmp),
-                            NULL, 0);
+          send_status_direct (ctrl, "SERIALNO", serial);
           xfree (serial);
         }
       return 0;
@@ -1029,10 +1021,9 @@ do_getattr (app_t app, ctrl_t ctrl, const char *name)
     }
   if (table[idx].special == -4)
     {
-      char *serial;
-      time_t stamp;
+      char *serial = app_get_serialno (app);
 
-      if (!app_get_serial_and_stamp (app, &serial, &stamp))
+      if (serial)
         {
           if (strlen (serial) > 16+12)
             {