C++ (Cpp) rfid_protocol_transceive Examples

Example #1

File: ok.c Project: jdkbx/librfid-pcsc-ifdhandler

/* wrap data, transmit to the device and get answer */
RESPONSECODE sendData(PUCHAR TxBuffer, DWORD TxLength, 
				 PUCHAR RxBuffer, PDWORD RxLength, int wait)
{
	RESPONSECODE rc;
	
	if (present == 0)
	{
		return IFD_COMMUNICATION_ERROR;
	}
	
	unsigned char apdu[TxLength];
	unsigned char buffer[2000];
	unsigned int i, j, response_length, n = 0;
	int sLen = TxLength;
	
	for (i = 0; i < TxLength; ++i)
	{
		apdu[i] = *(TxBuffer + i);
	}

	Log2(PCSC_LOG_DEBUG, "preparing to write %d data bytes", TxLength);
	printf(">> %s \n", hexdump(TxBuffer, TxLength));
	int rv;

	rv = rfid_protocol_transceive(ph, TxBuffer, TxLength, RxBuffer, &response_length, 0, 0);
	if (rv < 0)
	{
		Log2(PCSC_LOG_ERROR, "Error from transceive, returned %d\n", rv);
		present = 0;
		rfid_protocol_close(ph);
		rfid_layer2_close(l2h);
		rfid_reader_close(rh);
		return IFD_COMMUNICATION_ERROR;
	}

	Log2(PCSC_LOG_DEBUG, "wrote %d data bytes", TxLength);		
	Log2(PCSC_LOG_DEBUG, "got %d response bytes", response_length);
		
    if (response_length > 0)
    {
		*RxLength = response_length;
		
		//for (j = 0; j < response_length; ++j)
		//{
		//	*(RxBuffer + j) = buffer[j];
		//}
		rc = IFD_SUCCESS;
	    
	}
	else
	{
	    Log1(PCSC_LOG_ERROR, "no response, meaning eof, reader not usable anymore\n");
		present = 0;
		rfid_protocol_close(ph);
		rfid_layer2_close(l2h);
		rfid_reader_close(rh);
	    rc = IFD_COMMUNICATION_ERROR;
	}
	return rc;
}

Example #2

File: send_script.c Project: dpavlin/librfid

static int send_command(char* sbuf, int slen, char* rbuf, int rlen)
{
	int rv;
	static int doit;
	int answer, c = 0;

	if(doit == 0) {
		fprintf(stderr, "?? %s (%i bytes)\n", hexdump(sbuf, slen), slen);
		fprintf(stderr, "Execute? (Yes/No/All/Exit) ");
		answer = getc(stdin);
		if(answer != '\n') do {
			c = getc(stdin);
		} while(c != '\n' && c != EOF);
		switch(answer) {
		case 'y': // Fall-through
		case 'Y':
		case '\n':
			// Do nothing
			break;
		case 'n': // Fall-through
		case 'N':
			return 0;
			break;
		case 'a': // Fall-through
		case 'A':
			doit = 1;
			break;
		case 'e': // Fall-through
		case 'E':
			return -1;
			break;
		default:
			return 0; // Default to 'n'
			break;
		}
	}

	printf(">> %s (%i bytes)\n", hexdump(sbuf, slen), slen);

	rv = rfid_protocol_transceive(ph, sbuf, slen, rbuf, &rlen, 0, 0);
	if (rv < 0) {
		fprintf(stderr, "Error from transceive: %i\n", rv);
		return rv;
	}

	printf("<< %s (%i bytes)\n", hexdump(rbuf, rlen), rlen);

	if(rlen < 2 || rbuf[rlen-2] != (char)0x90 || rbuf[rlen-1] != 0x00) {
		fprintf(stderr, "SW is not 90 00. Ignore (i) or Abort (a)? ");
		answer = getc(stdin);
		if(answer != '\n') do {
			c = getc(stdin);
		} while(c != '\n' && c != EOF);
		switch(answer) {
		case 'i': // Fall-through
		case 'I':
		case '\n':
			// Do nothing
			break;
		case 'a': // Fall-through
		case 'A':
			return -1;
			break;
		default:
			return -1; // Default to 'a'
		}
	}

	return rlen;
}