Hello all,
I am trying to use pcsclite API just to check if the card is inserted on the
reader or not, based on the API reference and some example codes at muscle
site:
#include <stdio.h>
#include <PCSC/pcsclite.h>
#include <stdlib.h>
int main() {
SCARDCONTEXT hContext;
SCARDHANDLE hCard;
char *lpcReaders;
DWORD dwReaders;
DWORD dwActive, dwState, dwRlen;
DWORD dwProtocol, dwAtrLen;
BYTE Atr[MAX_ATR_SIZE];
SCardEstablishContext( SCARD_SCOPE_SYSTEM, 0, 0,
&hContext );
dwReaders = 0;
lpcReaders = 0;
SCardListReaders( hContext, 0, NULL, &dwReaders );
lpcReaders = (char *)malloc(sizeof(char)*dwReaders);
SCardListReaders( hContext, 0, lpcReaders, &dwReaders );
SCardConnect( hContext, lpcReaders, SCARD_SHARE_EXCLUSIVE,
SCARD_PROTOCOL_T0,
&hCard, &dwActive );
dwState = 0;
// here lpcReaders prints the value "OmniKey CardMan 3121 00 00"
// This 00 00 should be there? I think the problem is here...
SCardStatus( hCard, lpcReaders, &dwReaders, &dwState, &dwProtocol,
Atr, &dwAtrLen );
SCardDisconnect( hCard, SCARD_UNPOWER_CARD );
SCardReleaseContext( hContext );
if ( dwState & SCARD_PRESENT ) {
return 1;
}
return 0;
}
This code compiles and execute without an error... but it does not detect
the presence of the smartcard. Any ideas?
thanks, global
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