Obtaining PCSC Reader Serial Number Using WinSCard

Question

I have a problem getting the serial number of the PCSC reader if there is no card in the reader. I am using winscard.dll and c ++.

The following code will only work if there is a card in the reader. Otherwise, SCardHandle is not restored. I have not found another way to get SCardHandle.

SCARDHANDLE hCardHandle;
SCARDCONTEXT    hSC;
WCHAR   pCardReaderName[256];
LONG lReturn;

lReturn = SCardEstablishContext(SCARD_SCOPE_USER, 0, 0, &hSC);

if (lReturn != SCARD_S_SUCCESS)
{
    Console::WriteLine("SCardEstablishContext() failed\n");
    return;
}

my_select_reader(hSC, pCardReaderName); // just shows reader names in console and requires you to pick one

// connect to smart card
DWORD   dwAP;

lReturn = SCardConnect( hSC,
                (LPCWSTR)pCardReaderName,
                SCARD_SHARE_SHARED,
                SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1 | SCARD_PROTOCOL_RAW,
                &hCardHandle,
                &dwAP );

if ( SCARD_S_SUCCESS != lReturn )
{
    Console::WriteLine("Failed SCardConnect\n");
    exit(1);  // Or other appropriate action.
}

// get reader serial no
LPBYTE   pbAtr = NULL;
DWORD    cByte = SCARD_AUTOALLOCATE;

lReturn = SCardGetAttrib(hCardHandle,
                SCARD_ATTR_VENDOR_IFD_SERIAL_NO,
                (LPBYTE)&pbAtr,
                &cByte);

if ( SCARD_S_SUCCESS != lReturn )
{
    Console::WriteLine("Failed to retrieve Reader Serial\n");
    exit(1);  // Or other appropriate action.
}

printf("serial no: %s", pbAtr);

SCardFreeMemory(hCardHandle, pbAtr); 

Is there a way to get the serial number of the reader without connecting to a card?

Answer 1

Maybe I'm a little late - but anyway ...

, SCARD_SHARE_DIRECT SCardConnect. , .. ( "0x00" )

Answer 2

:

lReturn = SCardConnect(hResManager,szAvailRdr,SCARD_SHARE_SHARED,SCARD_PROTOCOL_T1,
                            &hCardHandle,
                            &dwActProtocol);

:

lReturn = SCardConnect(hResManager,szAvailRdr,SCARD_SHARE_DIRECT,
                      NULL,
                      &hCardHandle,
                      NULL);

szAvailRdr ( -) hCardHandle - , scardconnect.

!