10.0.0.21 Git - hexio/blob - pcscio.c

   1 /* pcscio.c -- input/output through PCSClite */
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <fcntl.h>
   6 #include <unistd.h>
   7 #include <string.h>
   8
   9 #include <sys/types.h>
  10 #include <sys/select.h>
  11
  12 #include <pthread.h>
  13 #include <winscard.h>
  14
  15
  16 /*
  17 int             pthread_detach __P((pthread_t pth)) {
  18         fprintf (stderr, "ERROR: pthread_detach called\n");
  19 }
  20 */
  21
  22
  23 int main (int argc, char *argv []) {
  24         int busy=1;
  25         SCARDCONTEXT ctx;
  26         SCARDHANDLE card;
  27         LONG err;
  28         DWORD actproto;
  29
  30         if (SCardEstablishContext (SCARD_SCOPE_SYSTEM, NULL, NULL, &ctx) != SCARD_S_SUCCESS) {
  31                 fprintf (stderr, "Failed to contact pcscd\n");
  32                 exit (1);
  33         }
  34         if (argc != 2) {
  35                 DWORD listsz=0;
  36                 LPTSTR readers=NULL, reader=NULL;
  37                 fprintf (stderr, "Usage: %s readername\n", argv [0]);
  38                 if ((SCardListReaders (ctx, NULL, NULL, &listsz) == SCARD_S_SUCCESS)
  39                  && (readers=malloc (listsz))
  40                  && (SCardListReaders (ctx, NULL, readers, &listsz) == SCARD_S_SUCCESS)) {
  41                         fprintf (stderr, "Currently attached readers:\n");
  42                         reader = readers;
  43                         while (*reader) {
  44                                 fprintf (stderr, " - %s\n", reader);
  45                                 reader = reader + strlen (reader);
  46                                 reader++;
  47                         }
  48                 }
  49                 if (readers) {
  50                         free (readers);
  51                 }
  52                 SCardReleaseContext (ctx);
  53                 exit (1);
  54         }
  55         err = SCardConnect (ctx, argv [1], SCARD_SHARE_EXCLUSIVE, SCARD_PROTOCOL_T1, &card, &actproto);
  56         if (err != SCARD_S_SUCCESS) {
  57                 fprintf (stderr, "Failed to access the smart card\n");
  58                 busy = 0;
  59         }
  60         fprintf (stderr, "Yippy!\n");
  61         while (busy) {
  62                 BYTE txbuf [275], rxbuf [275];
  63                 DWORD rxlen;
  64                 SCARD_IO_REQUEST req;
  65                 int txlen = read (0, txbuf, sizeof (txbuf));
  66                 if (txlen < 0) {
  67                         perror ("Error on stdin");
  68                         busy = 0;
  69                 } else if (txlen == 0) {
  70                         /* EOF encountered */
  71                         busy = 0;
  72                 } else {
  73                         req.dwProtocol = actproto;
  74                         req.cbPciLength = sizeof (req);
  75                         rxlen = sizeof (rxbuf);
  76                         err = SCardTransmit (card, &req, txbuf, txlen, &req, rxbuf, &rxlen);
  77                         if (err != SCARD_S_SUCCESS) {
  78                                 fprintf (stderr, "Error writing to smart card\n");
  79                                 busy = 0;
  80                         } else {
  81                                 if (write (1, txbuf, rxlen) < rxlen) {
  82                                         perror ("Partial output");
  83                                         busy = 0;
  84                                 }
  85                         }
  86                 }
  87         }
  88         SCardReleaseContext (ctx);
  89         return 0;
  90 }