//this method will open a reader instance and read the nfc device with
//cmd as its input and the command to run. it will return a string of the result.
//@params cmd - the command to run
private string readNFC(CmdApdu cmd)
{
PCSCReader reader = new PCSCReader();
string payload = "";
try
{
reader.Connect();
reader.ActivateCard(GS.SCard.Const.SCARD_SHARE_MODE.Exclusive, GS.SCard.Const.SCARD_PROTOCOL.Tx);
RespApdu respApdu = reader.Exchange(cmd, 0x9000);
if (respApdu.SW1SW2 == 0x9000)
{
payload = Encoding.UTF8.GetString(respApdu.Data);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
reader.Disconnect();
}
return(payload);
}
private void btnSend_Click(object sender, EventArgs e)
{
try
{
RespApdu respApdu = mPcscReader.Exchange(txtAPDU.Text);
ml.NewLine();
ml.AddLine("Send: " + txtAPDU.Text);
if (respApdu.Data != null && respApdu.Data.Length > 0)
{
//ml.AddLine("Resp: " + HexFormatting.ToHexString(respApdu.Data, true));
ml.AddLine(String.Format("Resp({0}B): {1}", respApdu.Data.Length,
HexFormatting.ToHexString(respApdu.Data, true)));
}
else
{
ml.AddLine("Resp: (None)");
}
ml.AddLine("Status: " + respApdu.SW1SW2.Value.ToString("X4"));
txtMessage.Text = ml.Text;
}
catch (WinSCardException ex)
{
txtMessage.Text = ml.AddLine(ex.WinSCardFunctionName + " Error 0x" +
ex.Status.ToString("X08") + ": " + ex.Message);
}
catch (Exception ex)
{
txtMessage.Text = ml.AddLine(ex.Message);
}
}
public void SelectAID()
{
try
{
RespApdu respApdu = mReader.Exchange("00 A4 04 00 0C A0 00 00 02 83 00 00 08 12 01 07 00"); // SELECT_AID
}
catch (WinSCardException ex)
{
//Console.WriteLine(ex.WinSCardFunctionName + " Error 0x" +
// ex.Status.ToString("X08") + ": " + ex.Message);
throw ex;
}
catch (Exception ex)
{
//Console.WriteLine(ex.Message);
throw ex;
}
}
public static async Task Read()
{
PCSCReader reader = new PCSCReader();
while (true)
{
try
{
reader.Connect();
reader.ActivateCard();
RespApdu respApdu = reader.Exchange("FF CA 00 00 00"); // Get Card UID ...
if (respApdu.SW1SW2 == 0x9000)
{
InvokeScanned("0x" + HexFormatting.ToHexString(respApdu.Data, false));
await Task.Delay(1000);
}
}
catch (WinSCardException ex)
{
InvokeError(ex.WinSCardFunctionName + " Error 0x" + ex.Status.ToString("X08") + ": " + ex.Message);
await Task.Delay(1000);
}
catch (Exception ex)
{
InvokeError(ex.Message);
await Task.Delay(1000);
}
finally
{
reader.Disconnect();
}
}
}
/*<summary>
* BYTE[] find_ndef()
* This function returns Byte array containgin all bytes from
* starting byte of NDEF "D1" record to the termination byte "FE"
*</summary>
*
* <remarks>
* This function is naive and only tries to find the content
* delimited by start and terminating bytes of NDEF:s
* </remarks>
*
*
*/
static Byte[] find_ndef()
{
RespApdu read_four_bytes;
int byte_num = 0;
String command;
String Hex_address;
int value;
var allbytes = new List <string>();
//Used for easy appending of all found bytes
var hexbytes = new List <byte>();
while (true)
{
value = Convert.ToInt32(byte_num);
Hex_address = String.Format("{0:X}", value);
//RespApdu only accepts commands that are of type
//"XX XX XX XX XX" so zero has to be prepended
//for values smaller than 0x10
if (byte_num < 16)
{
Hex_address = "0" + Hex_address;
}
//We start from block 0 byte 0
//Reading command: "FF B0 00 XX YY"
//XX is reading address
//YY is amount of bytes to read
//Distance between each XX is 04
command = "FF B0 00 " + Hex_address + " 04";
read_four_bytes = reader.Exchange(command);
if (read_four_bytes.SW1SW2 != 0x9000)
{
Console.WriteLine("Reading bytes from the NFC tag failed. reader returned: ", HexFormatting.ToHexString(read_four_bytes.Data, true));
break;
}
allbytes.Add(HexFormatting.ToHexString(read_four_bytes.Data, true));
hexbytes.AddRange(read_four_bytes.Data);
if (HexFormatting.ToHexString(read_four_bytes.Data, true).Contains("FE"))
{
Console.WriteLine("End of NDEF found");
break;
}
byte_num = byte_num + 1;
}
foreach (Object obj in hexbytes)
{
Console.Write(" {0}", String.Format("{0:X}", obj));
}
Console.WriteLine();
for (int i = 0; i < hexbytes.Count; i++)
{
//This IS D1 in hex. It starts NDEF tags
if (hexbytes[i] == 209)
{
hexbytes.RemoveRange(0, i);
}
else if (hexbytes[i] == 254)
{
break;
}
}
return(hexbytes.ToArray());
}
static void Main(string[] args)
{
ConsoleTraceListener consoleTraceListener = new ConsoleTraceListener();
Trace.Listeners.Add(consoleTraceListener);
reader = new PCSCReader();
//NdefLibrary.Ndef.NdefMessage message = new NdefLibrary.Ndef.NdefMessage();
/*WinSCard testi = new WinSCard();
* testi.Connect(null);*/
string input_text = "";
while (input_text != "joo")
{
try
{
//reader.SCard.Connect("",SCARD_SHARE_MODE.Direct, SCARD_PROTOCOL.Tx);
reader.Connect();
//set_buzzer_on();
//set_target_mode();
reader.ActivateCard();
//WinSCard reader = new WinSCard();
//testi.Connect(null);
//For some reason Direct commands only work after card has been activated (the command above)
//Also the reader resets to normal state after it's been unplugged.
//TODO: check if mode changes can be made permanent
if (!modes_changed)
{
//Console.WriteLine("YOLOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO");
//change_modes_for_reader();
modes_changed = true;
}
RespApdu respApdu = reader.Exchange(APDU_commands["get_card_uid"]); // Get Card UID ...
if (respApdu.SW1SW2 == 0x9000)
{
Console.WriteLine("UID = 0x" + HexFormatting.ToHexString(respApdu.Data, true));
}
use_stuff_properly();
//RespApdu tespApdu = reader.Exchange(String.Format(APDU_commands["direct_command_prefix"],"18", "D4 86 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00")); // Get Card UID ...
//RespApdu bespApdu = reader.Exchange(String.Format(APDU_commands["direct_command_prefix"], "18", "D4 40 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00")); // Get Card UID ...
//message = NdefLibrary.Ndef.NdefMessage.FromByteArray();
//message = NdefLibrary.Ndef.NdefMessage.FromByteArray(find_ndef());
//parse_record(message);
//write_to_tag("meloonis");
}
catch (WinSCardException ex)
{
Console.WriteLine(ex.WinSCardFunctionName + " Error 0x" +
ex.Status.ToString("X08") + ": " + ex.Message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
reader.Disconnect();
Console.WriteLine("Please press any key...");
input_text = Console.ReadLine();
}
}
}
