TestSmartCardListReaders.c

 
#include <winpr/crt.h>
#include <winpr/smartcard.h>
 
int TestSmartCardListReaders(int argc, char* argv[])
{
  LONG lStatus = 0;
  LPSTR pReader = NULL;
  SCARDCONTEXT hSC = 0;
  LPSTR mszReaders = NULL;
  DWORD cchReaders = SCARD_AUTOALLOCATE;
 
  WINPR_UNUSED(argc);
  WINPR_UNUSED(argv);
 
  lStatus = SCardEstablishContext(SCARD_SCOPE_USER, NULL, NULL, &hSC);
 
  if (lStatus != SCARD_S_SUCCESS)
  {
    printf("SCardEstablishContext failure: %s (0x%08" PRIX32 ")\n",
           SCardGetErrorString(lStatus), lStatus);
    return 0;
  }
 
  lStatus = SCardListReadersA(hSC, NULL, (LPSTR)&mszReaders, &cchReaders);
 
  if (lStatus != SCARD_S_SUCCESS)
  {
    if (lStatus == SCARD_E_NO_READERS_AVAILABLE)
      printf("SCARD_E_NO_READERS_AVAILABLE\n");
    else
      return -1;
  }
  else
  {
    pReader = mszReaders;
 
    while (*pReader)
    {
      printf("Reader: %s\n", pReader);
      pReader = pReader + strlen((CHAR*)pReader) + 1;
    }
 
    lStatus = SCardFreeMemory(hSC, mszReaders);
 
    if (lStatus != SCARD_S_SUCCESS)
      printf("Failed SCardFreeMemory\n");
  }
 
  SCardReleaseContext(hSC);
 
  return 0;
}