public bool AddTransaction(Transaction transaction)
{
if (transaction != null)
{
if (TransactionLog.Count != 0)
{
if (TransactionLog.Contains(transaction))
{
return(false);
}
else
{
TransactionLog.Add(transaction);
return(true);
}
}
else
{
TransactionLog.Add(transaction);
return(true);
}
}
else
{
throw new Exception("Please input a valid transaction");
}
}
public void ReadCard()
{
//read balance 80 32 00 03 04 00 00 00 00
//received: Deposit(BCD)
// vvvvv
// 05 11 11 25 02 03 12 15 37 20 00 25 09 08 60 00 00 0A 00 18 00 00 00 00 90 00
// ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^ ^^
// CAN issue date months of validity
// 2009/08 60 mths
APDUCommand apduCmd = new APDUCommand(0x80, 0x32, 0, 3, new byte[4], 0);
APDUResponse apdu1 = iCard.Transmit(apduCmd);
byte[] balanceBytes = new byte[4];
balanceBytes[0] = apdu1.Data[3];
balanceBytes[1] = apdu1.Data[2];
balanceBytes[2] = apdu1.Data[1];
balanceBytes[3] = apdu1.Data[0];
//balance is in cents. divide by 100 to get dollars
Balance = BitConverter.ToInt32(balanceBytes, 0) / 100.0f;
//dunno what the heck is this command, probably selecting something
apduCmd = new APDUCommand(0, 0xa4, 2, 0, new byte[] { 0, 1 }, 0);
apdu1 = iCard.Transmit(apduCmd);
//read CAN, expiry date, deposit 00 B0 00 00 18
apduCmd = new APDUCommand(0x00, 0xb0, 0, 0, null, 0x18);
apdu1 = iCard.Transmit(apduCmd);
//card number (CAN)
Number = ConvertBCDCardNumber(apdu1.Data, 1, 8);
//get the string form XXXX-XXXX-XXXX-XXXX
StringBuilder sb = new StringBuilder();
sb.Append(ConvertBCDCardNumber(apdu1.Data, 1, 2).ToString("D4"));
sb.Append("-");
sb.Append(ConvertBCDCardNumber(apdu1.Data, 3, 2).ToString("D4"));
sb.Append("-");
sb.Append(ConvertBCDCardNumber(apdu1.Data, 5, 2).ToString("D4"));
sb.Append("-");
sb.Append(ConvertBCDCardNumber(apdu1.Data, 7, 2).ToString("D4"));
NumberString = sb.ToString();
//read expiry date
int year = apdu1.Data[12]; //year, from 1900 or 2000
if (year > 90 && year < 100)
{
year += 1900;
}
else
{
year += 2000;
}
byte month = apdu1.Data[13];
byte validity = (byte)ConvertBCDCardNumber(apdu1.Data, 14, 1); //validity in months
DateTime issueDate = new DateTime(year, month, 1);
Expiry = issueDate.AddMonths(validity);
ExpiryString = Expiry.ToString("dd MMM yyyy");
Deposit = ConvertBCDCardNumber(apdu1.Data, 15, 2) / 100.0f;
//get transaction log
//read number of total entries in log
apduCmd = new APDUCommand(0, 0xb0, 0, 2, null, 4);
apdu1 = iCard.Transmit(apduCmd);
if (apdu1.SW1 != 0x90)
{
throw new Exception("Read NETS log size fail");
}
short logSize = (short)ConvertBCDCardNumber(new byte[] { apdu1.Data[2], apdu1.Data[3] }, 0, 2);
apduCmd = new APDUCommand(0, 0xa4, 2, 0, new byte[] { 0, 5 }, 0);
apdu1 = iCard.Transmit(apduCmd);
if (apdu1.SW1 != 0x90)
{
throw new Exception("Read NETS transaction fail");
}
//read the current log entry number
short endOffs = (short)(logSize * 4);
byte endP1 = (byte)((endOffs >> 8) & 0xff);
byte endP2 = (byte)(endOffs & 0xff);
apduCmd = new APDUCommand(0, 0xb0, endP1, endP2, null, 2);
apdu1 = iCard.Transmit(apduCmd);
if (apdu1.SW1 != 0x90)
{
throw new Exception("Read NETS current log number fail");
}
short currentLogNum = (short)ConvertBCDCardNumber(new byte[] { apdu1.Data[0], apdu1.Data[1] }, 0, 2);
currentLogNum -= 2;
//read each log entry from the ring buffer, starting from current
for (byte n = 0; n < logSize; n++)
{
int i = currentLogNum - n;
if (i < 0)
{
i += logSize;
}
short logOffs = (short)(i * 4);
byte logP1 = (byte)((logOffs >> 8) & 0xff);
byte logP2 = (byte)(logOffs & 0xff);
//read binary 0xb0, offset logOffs, size 16
apduCmd = new APDUCommand(0, 0xb0, logP1, logP2, null, 16);
apdu1 = iCard.Transmit(apduCmd);
if (apdu1.SW1 != 0x90)
{
throw new Exception("Read NETS log entry fail");
}
NETSTransaction logEntry = new NETSTransaction(apdu1.Data);
if (logEntry.Type != 0)
{
TransactionLog.Add(logEntry);
}
}
}