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/*
* Sample program to use PC/SC API.
*
* MUSCLE SmartCard Development ( http://www.linuxnet.com )
*
* Copyright (C) 2003-2004
* Ludovic Rousseau <ludovic.rousseau@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: pcsc_demo.c,v 1.1.1.4 2004/05/11 13:44:18 rousseau Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <string.h>
#include <wintypes.h>
#include <winscard.h>
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
/* PCSC error message pretty print */
#define PCSC_ERROR(rv, text) \
if (rv != SCARD_S_SUCCESS) \
{ \
printf(text ": %s (0x%lX)\n", pcsc_stringify_error(rv), rv); \
goto end; \
} \
else \
{ \
printf(text ": OK\n\n"); \
}
int main(int argc, char *argv[])
{
LONG rv;
SCARDCONTEXT hContext;
DWORD dwReaders;
LPSTR mszReaders;
char *ptr, **readers = NULL;
int nbReaders;
SCARDHANDLE hCard;
DWORD dwActiveProtocol, dwReaderLen, dwState, dwProt, dwAtrLen;
BYTE pbAtr[MAX_ATR_SIZE] = "";
BYTE pbReader[MAX_READERNAME] = "";
int reader_nb;
int i;
printf("PC/SC sample code\n");
printf("V 1.1 2003-2004, Ludovic Rousseau <ludovic.rousseau@free.fr>\n");
rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
if (rv != SCARD_S_SUCCESS)
{
printf("SCardEstablishContext: Cannot Connect to Resource Manager %lX\n", rv);
return 1;
}
/* Retrieve the available readers list.
*
* 1. Call with a null buffer to get the number of bytes to allocate
* 2. malloc the necessary storage
* 3. call with the real allocated buffer
*/
rv = SCardListReaders(hContext, NULL, NULL, &dwReaders);
if (rv != SCARD_S_SUCCESS)
{
printf("SCardListReader: %lX\n", rv);
}
mszReaders = malloc(sizeof(char)*dwReaders);
if (mszReaders == NULL)
{
printf("malloc: not enough memory\n");
goto end;
}
rv = SCardListReaders(hContext, NULL, mszReaders, &dwReaders);
if (rv != SCARD_S_SUCCESS)
printf("SCardListReader: %lX\n", rv);
/* Extract readers from the null separated string and get the total
* number of readers */
nbReaders = 0;
ptr = mszReaders;
while (*ptr != '\0')
{
ptr += strlen(ptr)+1;
nbReaders++;
}
if (nbReaders == 0)
{
printf("No reader found\n");
goto end;
}
/* allocate the readers table */
readers = calloc(nbReaders, sizeof(char *));
if (NULL == readers)
{
printf("Not enough memory for readers[]\n");
goto end;
}
/* fill the readers table */
nbReaders = 0;
ptr = mszReaders;
while (*ptr != '\0')
{
printf("%d: %s\n", nbReaders, ptr);
readers[nbReaders] = ptr;
ptr += strlen(ptr)+1;
nbReaders++;
}
if (argc > 1)
{
reader_nb = atoi(argv[1]);
if (reader_nb < 0 || reader_nb >= nbReaders)
{
printf("Wrong reader index: %d\n", reader_nb);
goto end;
}
}
else
reader_nb = 0;
/* connect to a card */
dwActiveProtocol = -1;
rv = SCardConnect(hContext, readers[reader_nb], SCARD_SHARE_EXCLUSIVE,
SCARD_PROTOCOL_ANY, &hCard, &dwActiveProtocol);
printf(" Protocol: %ld\n", dwActiveProtocol);
PCSC_ERROR(rv, "SCardConnect")
/* get card status */
dwAtrLen = sizeof(pbAtr);
dwReaderLen = sizeof(pbReader);
rv = SCardStatus(hCard, /*NULL*/ pbReader, &dwReaderLen, &dwState, &dwProt,
pbAtr, &dwAtrLen);
printf(" Reader: %s (length %ld bytes)\n", pbReader, dwReaderLen);
printf(" State: 0x%lX\n", dwState);
printf(" Prot: %ld\n", dwProt);
printf(" ATR (length %ld bytes):", dwAtrLen);
for (i=0; i<dwAtrLen; i++)
printf(" %02X", pbAtr[i]);
printf("\n");
PCSC_ERROR(rv, "SCardStatus")
/* card reconnect */
rv = SCardReconnect(hCard, SCARD_SHARE_EXCLUSIVE,
SCARD_PROTOCOL_ANY, SCARD_UNPOWER_CARD, &dwActiveProtocol);
PCSC_ERROR(rv, "SCardReconnect")
/* get card status */
dwAtrLen = sizeof(pbAtr);
dwReaderLen = sizeof(pbReader);
rv = SCardStatus(hCard, /*NULL*/ pbReader, &dwReaderLen, &dwState, &dwProt,
pbAtr, &dwAtrLen);
printf(" Reader: %s (length %ld bytes)\n", pbReader, dwReaderLen);
printf(" State: 0x%lX\n", dwState);
printf(" Prot: %ld\n", dwProt);
printf(" ATR (length %ld bytes):", dwAtrLen);
for (i=0; i<dwAtrLen; i++)
printf(" %02X", pbAtr[i]);
printf("\n");
PCSC_ERROR(rv, "SCardStatus")
/* card disconnect */
rv = SCardDisconnect(hCard, SCARD_UNPOWER_CARD);
PCSC_ERROR(rv, "SCardDisconnect")
end:
/* We try to leave things as clean as possible */
rv = SCardReleaseContext(hContext);
if (rv != SCARD_S_SUCCESS)
printf("SCardReleaseContext: %s (0x%lX)\n", pcsc_stringify_error(rv),
rv);
/* Free allocated resources */
SCardUnload();
/* free allocated memory */
free(mszReaders);
free(readers);
return 0;
} /* main */
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