SCD: Clean up. Remove PADLEN for keypad input.

* scd/apdu.c (struct pininfo_s): Use iso7816_pininfo_s.
(struct reader_table_s): Remove last arg from check_keypad method.
(check_pcsc_keypad, check_pcsc_keypad): Remove PIN_PADLEN.
(pcsc_keypad_verify, pcsc_keypad_modify): Don't check PIN_PADLEN.
(send_apdu_ccid, ccid_keypad_operation): Remove PIN_PADLEN.
(apdu_check_keypad, apdu_keypad_verify, apdu_keypad_modify):
Likewise.

* scd/apdu.h (apdu_check_keypad, apdu_keypad_verify)
(apdu_keypad_modify): Remove PIN_PADLEN.

* scd/ccid-driver.c (ccid_transceive_secure): Remove PIN_PADLEN.

* scd/ccid-driver.h (ccid_transceive_secure): Remove PIN_PADLEN.

* scd/iso7816.c (iso7816_check_keypad, iso7816_verify_kp)
(iso7816_change_reference_data_kp): Remove PADLEN.

* scd/iso7816.h (struct iso7816_pininfo_s): Remove PADLEN, PADCHAR.
--
In the OpenPGPcard specification, password comes with no padding.  In
GnuPG, we support keypad input for OpenPGPcard only.  Thus, it is
useless to try to support padding for keypad input.

scd/apdu.c

@@ -83,15 +83,7 @@
 #define DLSTDCALL
 #endif
 
-
-/* Helper to pass parameters related to keypad based operations. */
-struct pininfo_s
-{
-  int mode;
-  int minlen;
-  int maxlen;
-  int padlen;
-};
+#define pininfo_s iso7816_pininfo_s
 
 /* A structure to collect information pertaining to one reader
    slot. */
@@ -108,7 +100,7 @@ struct reader_table_s {
   int (*get_status_reader)(int, unsigned int *);
   int (*send_apdu_reader)(int,unsigned char *,size_t,
                           unsigned char *, size_t *, struct pininfo_s *);
-  int (*check_keypad)(int, int, int, int, int, int);
+  int (*check_keypad)(int, int, int, int, int);
   void (*dump_status_reader)(int);
   int (*set_progress_cb)(int, gcry_handler_progress_t, void*);
   int (*keypad_verify)(int, int, int, int, int, struct pininfo_s *);
@@ -331,7 +323,7 @@ static int apdu_get_status_internal (int slot, int hang, int no_atr_reset,
                                      unsigned int *status,
                                      unsigned int *changed);
 static int check_pcsc_keypad (int slot, int command, int pin_mode,
-                              int pinlen_min, int pinlen_max, int pin_padlen);
+                              int pinlen_min, int pinlen_max);
 static int pcsc_keypad_verify (int slot, int class, int ins, int p0, int p1,
                                struct pininfo_s *pininfo);
 static int pcsc_keypad_modify (int slot, int class, int ins, int p0, int p1,
@@ -1993,7 +1985,7 @@ open_pcsc_reader (const char *portstr)
    on the keypad.  Return 0 on success.  */
 static int
 check_pcsc_keypad (int slot, int command, int pin_mode,
-                   int pinlen_min, int pinlen_max, int pin_padlen)
+                   int pinlen_min, int pinlen_max)
 {
   unsigned char buf[256];
   size_t len = 256;
@@ -2002,7 +1994,6 @@ check_pcsc_keypad (int slot, int command, int pin_mode,
   (void)pin_mode;
   (void)pinlen_min;
   (void)pinlen_max;
-  (void)pin_padlen;
 
  check_again:
   if (command == ISO7816_VERIFY)
@@ -2069,9 +2060,6 @@ pcsc_keypad_verify (int slot, int class, int ins, int p0, int p1,
   if (pininfo->mode != 1)
     return SW_NOT_SUPPORTED;
 
-  if (pininfo->padlen != 0)
-    return SW_NOT_SUPPORTED;
-
   if (!pininfo->minlen)
     pininfo->minlen = 1;
   if (!pininfo->maxlen)
@@ -2153,9 +2141,6 @@ pcsc_keypad_modify (int slot, int class, int ins, int p0, int p1,
   if (pininfo->mode != 1)
     return SW_NOT_SUPPORTED;
 
-  if (pininfo->padlen != 0)
-    return SW_NOT_SUPPORTED;
-
   if (!pininfo->minlen)
     pininfo->minlen = 1;
   if (!pininfo->maxlen)
@@ -2332,7 +2317,6 @@ send_apdu_ccid (int slot, unsigned char *apdu, size_t apdulen,
                                   pininfo->mode,
                                   pininfo->minlen,
                                   pininfo->maxlen,
-                                  pininfo->padlen,
                                   buffer, maxbuflen, buflen);
   else
     err = ccid_transceive (reader_table[slot].ccid.handle,
@@ -2351,14 +2335,14 @@ send_apdu_ccid (int slot, unsigned char *apdu, size_t apdulen,
    parameters, see ccid-driver.c */
 static int
 check_ccid_keypad (int slot, int command, int pin_mode,
-                   int pinlen_min, int pinlen_max, int pin_padlen)
+                   int pinlen_min, int pinlen_max)
 {
   unsigned char apdu[] = { 0, 0, 0, 0x81 };
 
   apdu[1] = command;
   return ccid_transceive_secure (reader_table[slot].ccid.handle,
                                  apdu, sizeof apdu,
-                                 pin_mode, pinlen_min, pinlen_max, pin_padlen,
+                                 pin_mode, pinlen_min, pinlen_max,
                                  NULL, 0, NULL);
 }
 
@@ -2379,7 +2363,6 @@ ccid_keypad_operation (int slot, int class, int ins, int p0, int p1,
   err = ccid_transceive_secure (reader_table[slot].ccid.handle,
                                 apdu, sizeof apdu,
                                 pininfo->mode, pininfo->minlen, pininfo->maxlen,
-                                pininfo->padlen,
                                 result, 2, &resultlen);
   if (err)
     return err;
@@ -3423,7 +3406,7 @@ apdu_get_status (int slot, int hang,
    parameters, see ccid-driver.c */
 int
 apdu_check_keypad (int slot, int command, int pin_mode,
-                   int pinlen_min, int pinlen_max, int pin_padlen)
+                   int pinlen_min, int pinlen_max)
 {
   if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
     return SW_HOST_NO_DRIVER;
@@ -3436,8 +3419,7 @@ apdu_check_keypad (int slot, int command, int pin_mode,
         return sw;
 
       sw = reader_table[slot].check_keypad (slot, command,
-                                            pin_mode, pinlen_min, pinlen_max,
-                                            pin_padlen);
+                                            pin_mode, pinlen_min, pinlen_max);
       unlock_slot (slot);
       return sw;
     }
@@ -3448,14 +3430,13 @@ apdu_check_keypad (int slot, int command, int pin_mode,
 
 int
 apdu_keypad_verify (int slot, int class, int ins, int p0, int p1, int pin_mode,
-                    int pinlen_min, int pinlen_max, int pin_padlen)
+                    int pinlen_min, int pinlen_max)
 {
   struct pininfo_s pininfo;
 
   pininfo.mode = pin_mode;
   pininfo.minlen = pinlen_min;
   pininfo.maxlen = pinlen_max;
-  pininfo.padlen = pin_padlen;
 
   if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
     return SW_HOST_NO_DRIVER;
@@ -3479,14 +3460,13 @@ apdu_keypad_verify (int slot, int class, int ins, int p0, int p1, int pin_mode,
 
 int
 apdu_keypad_modify (int slot, int class, int ins, int p0, int p1, int pin_mode,
-                    int pinlen_min, int pinlen_max, int pin_padlen)
+                    int pinlen_min, int pinlen_max)
 {
   struct pininfo_s pininfo;
 
   pininfo.mode = pin_mode;
   pininfo.minlen = pinlen_min;
   pininfo.maxlen = pinlen_max;
-  pininfo.padlen = pin_padlen;
 
   if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
     return SW_HOST_NO_DRIVER;

scd/apdu.h

@@ -115,13 +115,11 @@ int apdu_reset (int slot);
 int apdu_get_status (int slot, int hang,
                      unsigned int *status, unsigned int *changed);
 int apdu_check_keypad (int slot, int command, int pin_mode,
-                       int pinlen_min, int pinlen_max, int pin_padlen);
+                       int pinlen_min, int pinlen_max);
 int apdu_keypad_verify (int slot, int class, int ins, int p0, int p1,
-                        int pin_mode, int pinlen_min, int pinlen_max,
-                        int pin_padlen);
+                        int pin_mode, int pinlen_min, int pinlen_max);
 int apdu_keypad_modify (int slot, int class, int ins, int p0, int p1,
-                        int pin_mode, int pinlen_min, int pinlen_max,
-                        int pin_padlen);
+                        int pin_mode, int pinlen_min, int pinlen_max);
 int apdu_send_simple (int slot, int extended_mode,
                       int class, int ins, int p0, int p1,
                       int lc, const char *data);

scd/ccid-driver.c

@@ -3288,7 +3288,7 @@ ccid_transceive (ccid_driver_t handle,
           The APDU should me made up of 4 bytes without Lc.
 
    PINLEN_MIN and PINLEN_MAX define the limits for the pin length. 0
-   may be used t enable reasonable defaults.  PIN_PADLEN should be 0.
+   may be used t enable reasonable defaults.
 
    When called with RESP and NRESP set to NULL, the function will
    merely check whether the reader supports the secure command for the
@@ -3297,7 +3297,6 @@ int
 ccid_transceive_secure (ccid_driver_t handle,
                         const unsigned char *apdu_buf, size_t apdu_buflen,
                         int pin_mode, int pinlen_min, int pinlen_max,
-                        int pin_padlen,
                         unsigned char *resp, size_t maxresplen, size_t *nresp)
 {
   int rc;
@@ -3326,9 +3325,6 @@ ccid_transceive_secure (ccid_driver_t handle,
   if (pin_mode != 1)
     return CCID_DRIVER_ERR_NOT_SUPPORTED;
 
-  if (pin_padlen != 0)
-    return CCID_DRIVER_ERR_NOT_SUPPORTED;
-
   if (!pinlen_min)
     pinlen_min = 1;
   if (!pinlen_max)

scd/ccid-driver.h

@@ -94,7 +94,7 @@ int ccid_transceive (ccid_driver_t handle,
 int ccid_transceive_secure (ccid_driver_t handle,
                      const unsigned char *apdu, size_t apdulen,
                      int pin_mode,
-                     int pinlen_min, int pinlen_max, int pin_padlen,
+                     int pinlen_min, int pinlen_max,
                      unsigned char *resp, size_t maxresplen, size_t *nresp);
 int ccid_transceive_escape (ccid_driver_t handle,
                             const unsigned char *data, size_t datalen,

scd/iso7816.c

@@ -274,8 +274,7 @@ iso7816_check_keypad (int slot, int command, iso7816_pininfo_t *pininfo)
   int sw;
 
   sw = apdu_check_keypad (slot, command,
-                          pininfo->mode, pininfo->minlen, pininfo->maxlen,
-                          pininfo->padlen);
+                          pininfo->mode, pininfo->minlen, pininfo->maxlen);
   return iso7816_map_sw (sw);
 }
 
@@ -289,8 +288,7 @@ iso7816_verify_kp (int slot, int chvno, iso7816_pininfo_t *pininfo)
   int sw;
 
   sw = apdu_keypad_verify (slot, 0x00, CMD_VERIFY, 0, chvno,
-                           pininfo->mode, pininfo->minlen, pininfo->maxlen,
-                           pininfo->padlen);
+                           pininfo->mode, pininfo->minlen, pininfo->maxlen);
   return map_sw (sw);
 }
 
@@ -318,7 +316,7 @@ iso7816_change_reference_data_kp (int slot, int chvno, int is_exchange,
   sw = apdu_keypad_modify (slot, 0x00, CMD_CHANGE_REFERENCE_DATA,
 			   is_exchange ? 1 : 0,
 			   chvno, pininfo->mode, pininfo->minlen,
-			   pininfo->maxlen, pininfo->padlen);
+			   pininfo->maxlen);
   return map_sw (sw);
 }
 

scd/iso7816.h

@@ -37,8 +37,6 @@ struct iso7816_pininfo_s
   int mode;    /* A mode of 0 means: Do not use the keypad. */
   int minlen;
   int maxlen;
-  int padlen;
-  int padchar;
 };
 typedef struct iso7816_pininfo_s iso7816_pininfo_t;