SCD: Add option enable-keypad-varlen and support for GEMPC_PINPAD.

* scd/scdaemon.h (opt): Add enable_keypad_varlen.
* scd/scdaemon.c (cmd_and_opt_values): Add oEnableKeypadVarlen.
(opts, main): Add oEnableKeypadVarlen.
* scd/ccid-driver.c (GEMPC_PINPAD): New.
(ccid_transceive_secure): Add enable_varlen handling.
Enable GEMPC_PINPAD.
--
Note that GEMPC_PINPAD doesn't support variable length keypad input.
The feature of fixed length keypad input will be added soon.

scd/ccid-driver.c

@@ -220,6 +220,7 @@ enum {
 #define SCM_SPR532      0xe003
 #define CHERRY_ST2000   0x003e
 #define VASCO_920       0x0920
+#define GEMPC_PINPAD	0x3478
 
 /* A list and a table with special transport descriptions. */
 enum {
@@ -3307,6 +3308,7 @@ ccid_transceive_secure (ccid_driver_t handle,
   size_t dummy_nresp;
   int testmode;
   int cherry_mode = 0;
+  int enable_varlen = opt.enable_keypad_varlen;
 
   testmode = !resp && !nresp;
 
@@ -3345,11 +3347,14 @@ ccid_transceive_secure (ccid_driver_t handle,
     case VENDOR_SCM:  /* Tested with SPR 532. */
     case VENDOR_KAAN: /* Tested with KAAN Advanced (1.02). */
     case VENDOR_FSIJ: /* Tested with the gnuk code (2011-01-05).  */
+      enable_varlen = 1;
       break;
     case VENDOR_VASCO: /* Tested with DIGIPASS 920 */
+      enable_varlen = 1;
       pinlen_max = 15;
       break;
     case VENDOR_CHERRY:
+      enable_varlen = 1;
       /* The CHERRY XX44 keyboard echos an asterisk for each entered
          character on the keyboard channel.  We use a special variant
          of PC_to_RDR_Secure which directs these characters to the
@@ -3360,6 +3365,11 @@ ccid_transceive_secure (ccid_driver_t handle,
       if (handle->id_product != CHERRY_ST2000)
         cherry_mode = 1;
       break;
+    case VENDOR_GEMPC:
+      enable_varlen = 0;
+      if (handle->id_product == GEMPC_PINPAD)
+	break;
+      /* fall through */
     default:
      return CCID_DRIVER_ERR_NOT_SUPPORTED;
     }

scd/scdaemon.c

@@ -95,6 +95,7 @@ enum cmd_and_opt_values
   oAllowAdmin,
   oDenyAdmin,
   oDisableApplication,
+  oEnableKeypadVarlen,
   oDebugDisableTicker
 };
 
@@ -148,6 +149,8 @@ static ARGPARSE_OPTS opts[] = {
   ARGPARSE_s_n (oDenyAdmin, "deny-admin",
                 N_("deny the use of admin card commands")),
   ARGPARSE_s_s (oDisableApplication, "disable-application", "@"),
+  ARGPARSE_s_n (oEnableKeypadVarlen, "enable-keypad-varlen",
+                N_("use variable length input for keypad")),
 
   ARGPARSE_end ()
 };
@@ -587,6 +590,8 @@ main (int argc, char **argv )
           add_to_strlist (&opt.disabled_applications, pargs.r.ret_str);
           break;
 
+	case oEnableKeypadVarlen: opt.enable_keypad_varlen = 1; break;
+
         default:
           pargs.err = configfp? ARGPARSE_PRINT_WARNING:ARGPARSE_PRINT_ERROR;
           break;

scd/scdaemon.h

@@ -57,6 +57,7 @@ struct
   const char *reader_port;  /* NULL or reder port to use. */
   int disable_ccid;    /* Disable the use of the internal CCID driver. */
   int disable_keypad;  /* Do not use a keypad. */
+  int enable_keypad_varlen;  /* Use variable length input for keypad. */
   int allow_admin;     /* Allow the use of admin commands for certain
                           cards. */
   strlist_t disabled_applications;  /* Card applications we do not