// wraps SCardTransmit
func (card *Card) Transmit(cmd []byte) ([]byte, error) {
var sendpci *C.SCARD_IO_REQUEST
var recvpci C.SCARD_IO_REQUEST
switch card.activeProtocol {
case PROTOCOL_T0:
sendpci = &C.g_rgSCardT0Pci
case PROTOCOL_T1:
sendpci = &C.g_rgSCardT1Pci
case PROTOCOL_RAW:
sendpci = &C.g_rgSCardRawPci
default:
panic("unknown protocol")
}
var recv [C.MAX_BUFFER_SIZE_EXTENDED]byte
var recvlen C.DWORD = C.DWORD(len(recv))
r := C.SCardTransmit(card.handle, sendpci, (*C.BYTE)(&cmd[0]), C.DWORD(len(cmd)), &recvpci, (*C.BYTE)(&recv[0]), &recvlen)
if r != C.SCARD_S_SUCCESS {
return nil, newError(r)
}
rsp := make([]byte, recvlen)
copy(rsp, recv[0:recvlen])
return rsp, nil
}
// wraps SCardTransmit
func (card *Card) Transmit(cmd []byte) ([]byte, error) {
var sendpci C.SCARD_IO_REQUEST
var recvpci C.SCARD_IO_REQUEST
switch card.activeProtocol {
case PROTOCOL_T0:
sendpci.dwProtocol = C.SCARD_PROTOCOL_T0
case PROTOCOL_T1:
sendpci.dwProtocol = C.SCARD_PROTOCOL_T1
default:
panic("unknown protocol")
}
sendpci.cbPciLength = C.sizeof_SCARD_IO_REQUEST
var recv [C.MAX_BUFFER_SIZE_EXTENDED]byte
var recvlen C.DWORD = C.DWORD(len(recv))
r := C.SCardTransmit(card.handle, &sendpci, (*C.BYTE)(&cmd[0]), C.DWORD(len(cmd)), &recvpci, (*C.BYTE)(&recv[0]), &recvlen)
if r != C.SCARD_S_SUCCESS {
return nil, scardError(r)
}
rsp := make([]byte, recvlen)
copy(rsp, recv[0:recvlen])
return rsp, nil
}