internal static extern uint SCardTransmit(CardSafeHandler hCard, SCARD_IO_REQUEST pioSendPci, byte[] pbSendBuffer, int cbSendLength, [In, Out] SCARD_IO_REQUEST pioRecvPci, [Out] byte[] pbRecvBuffer, [In, Out] ref int pcbRecvLength);
public byte[] ReadBinary(byte[] file)
{
uint retVal;
uint attempts;
SCARD_IO_REQUEST ioReq = new SCARD_IO_REQUEST(protocol);
attempts = 0;
do
{
retVal = NativeMethods.SCardBeginTransaction(handler);
if (retVal == 0x80100017)
{
throw new ReaderException("The card reader isn't available any more");
}
if (retVal == 0x80100069)
{
throw new NoCardException("The card has been removed");
}
if (retVal == 0x80100068 || retVal == 0x8010002F)
{
attempts++; //former is reset (which is fine, we are only starting), the latter is "comm error, retry".
}
} while (attempts > 0 && attempts < 5);
if (retVal != 0)
{
throw new InvalidOperationException("Failed to start transaction: 0x" + retVal.ToString("X"));
}
try
{
byte[] cmd;
int rspLen = 258;
byte[] rsp = new byte[rspLen];
cmd = new byte[CMD_SELECT_FILE.Length + file.Length];
Array.Copy(CMD_SELECT_FILE, cmd, CMD_SELECT_FILE.Length);
cmd[4] = (byte)file.Length;
Array.Copy(file, 0, cmd, CMD_SELECT_FILE.Length, file.Length);
attempts = 0;
do
{
retVal = NativeMethods.SCardTransmit(handler, ioReq, cmd, cmd.Length, null, rsp, ref rspLen);
if (retVal == 0x80100017)
{
throw new ReaderException("The card reader isn't available any more");
}
if (retVal == 0x80100069)
{
throw new NoCardException("The card has been removed");
}
if (retVal == 0x8010002F)
{
attempts++; //"comm error, retry".
}
} while (attempts > 0 && attempts < 5);
if (retVal != 0)
{
throw new InvalidOperationException("Failed to select file: 0x" + retVal.ToString("X"));
}
if (rspLen < 0)
{
throw new InvalidOperationException("Failed to select file SW1=? SW2=?");
}
if (rsp[0] != 0x90 || rsp[1] != 0x0)
{
throw new InvalidOperationException("Failed to select file SW1=" + rsp[0].ToString("X") + " SW2=" + rsp[1].ToString("X"));
}
int offset = 0;
cmd = new byte[CMD_READ_BINARY.Length];
Array.Copy(CMD_READ_BINARY, cmd, cmd.Length);
MemoryStream bytes = new MemoryStream();
do
{
cmd[2] = (byte)(offset >> 8);
cmd[3] = (byte)(offset & 0xFF);
rspLen = rsp.Length;
retVal = 0x8010002F;//retry
attempts = 0;
do
{
retVal = NativeMethods.SCardTransmit(handler, ioReq, cmd, cmd.Length, null, rsp, ref rspLen);
if (retVal == 0x80100017)
{
throw new ReaderException("The card reader isn't available any more");
}
if (retVal == 0x80100069)
{
throw new NoCardException("The card has been removed");
}
if (retVal == 0x8010002F)
{
attempts++; //"comm error, retry".
}
} while (attempts > 0 && attempts < 5);
if (retVal != 0)
{
throw new InvalidOperationException("Failed to read bytes: " + retVal.ToString("X"));
}
if (rspLen < 0)
{
throw new InvalidOperationException("Failed to read bytes SW1=? SW2=?");
}
if (rsp[rspLen - 2] == 0x6B && rsp[rspLen - 1] == 0x0)
{
break; // Finished, there where no more bytes
}
if (rsp[rspLen - 2] == 0x6C)
{
cmd[4] = rsp[1];// Almost finished, reading less
continue;
}
if (rsp[rspLen - 2] != 0x90 || rsp[rspLen - 1] != 0x0)
{
throw new InvalidOperationException("Failed to read bytes SW1=" + rsp[0].ToString("X") + " SW2=" + rsp[1].ToString("X"));
}
bytes.Write(rsp, 0, rspLen - 2);
offset += rspLen - 2;
} while (rspLen == 258 || rsp[0] == 0x6C);
return(bytes.ToArray());
}
finally
{
retVal = NativeMethods.SCardEndTransaction(handler, CardDisposition.SCARD_LEAVE_CARD);
if (retVal == 0x80100017)
{
throw new ReaderException("The card reader isn't available any more");
}
if (retVal == 0x80100069)
{
throw new NoCardException("The card has been removed");
}
if (retVal != 0)
{
throw new InvalidOperationException("Failed to end transaction: 0x" + retVal.ToString("X"));
}
}
}
internal static extern uint SCardTransmit(CardSafeHandler hCard, SCARD_IO_REQUEST pioSendPci, byte[] pbSendBuffer, int cbSendLength, [In, Out] SCARD_IO_REQUEST pioRecvPci, [Out] byte[] pbRecvBuffer, [In, Out] ref int pcbRecvLength);
