public TLVObject SendAPDU(IAPDUMessage message, out ushort sw12)
{
using (var ms = new MemoryStream())
{
message.WriteRawData(ms);
var dataToSend = ms.ToArray();
#if DEBUG
System.Diagnostics.Debug.WriteLine(
string.Format("C-APDU => {0}", string.Join(" ", dataToSend.Select(x => x.ToString("X2")))));
#endif
var resp = SendCommand(dataToSend);
#if DEBUG
System.Diagnostics.Debug.WriteLine(
string.Format("R-APDU <= {0}", string.Join(" ", resp.Select(x => x.ToString("X2")))));
#endif
if (resp == null || resp.Length < 2)
{
throw new InvalidOperationException("APDU Response is null or empty");
}
sw12 = (ushort)((ushort)(resp[resp.Length - 2] << 8) | (ushort)(resp[resp.Length - 1]));
if (resp.Length == 2)
{
return(null);
}
using (var respMs = new MemoryStream(resp))
using (var reader = new TLVReader(respMs)
{
RemoveEMVPadding = IsEmv
})
{
var res = reader.PeekTagAndLength();
if (res.Item2 > resp.Length - 2)
{
System.Diagnostics.Debug.WriteLine("Too short result, readjusting length");
message.ExpectedResponseLength = res.Item2 + (int)respMs.Position;
return(SendAPDU(message, out sw12));
}
respMs.Position = 0;
return(reader.ReadTags().First());
}
}
}
public TLVObject SendAPDU(IAPDUMessage message)
{
ushort sw12 = 0;
var retVal = SendAPDU(message, out sw12);
if (sw12 == 0x9000)
{
return(retVal);
}
else if (sw12 == 0x6700 && !message.ExpectedResponseLength.HasValue) //Wrong length maybe need to try set expected lenght
{
message.ExpectedResponseLength = 0xF;
return(SendAPDU(message));
}
else if (sw12 == 0x6700 && message.ExpectedResponseLength.HasValue && message.ExpectedResponseLength.Value < 0xFFFFFF)
{
message.ExpectedResponseLength = (message.ExpectedResponseLength << 4) & 0xF;
return(SendAPDU(message));
}
else
{
throw new SmartCardReaderException($"SW Status is not OK ({sw12.ToString("X2")})", sw12);
}
}
