/// <summary>
/// Issue a read-record command for all records included in the GPO Responce, Tag AFL(Application file locator)
/// </summary>
public void ReadRecords()
{
byte[] afl;
if (GpoTemplateFormat == EmvConstants.GpoTemplateFormat.Format1)
{
List <byte> gpores = TLV_GPO.TagList.Single(t => t.TagStringName == "80").TagValue;
afl = gpores.Skip(2).ToArray();
}
else
{
afl = TLV_GPO.TagList.SingleOrDefault(t => t.TagStringName == "94")?.TagValue.ToArray();
if (afl == null)
{
return;
}
}
AflResult aflpos = TlvTools.AflParser(afl);
EmvRecords = new List <SmartEmvRecord>();
foreach (var entry in aflpos.AflEntries)
{
for (int irecord = entry.StartRecord; irecord <= entry.EndRecord; irecord++)
//foreach (int irecord in Enumerable.Range(entry.StartRecord, entry.EndRecord))
{
CommandApdu apdu = new CommandApdu(IsoCase.Case2Short, _reader.ActiveProtocol);
apdu.CLA = 0x00;
apdu.INS = 0xB2; //GPO
apdu.P1 = (byte)irecord; //select by name
apdu.P2 = (byte)((entry.Sfi << 3) | 4); // First or only occurrence
var res = _reader.TransmitWithLog(apdu); // data buffer
if (res.SW1 == 0x6C)
{
apdu.Le = res.SW2;
res = _reader.TransmitWithLog(apdu); // data buffer
}
if (res.SW1 != (byte)SW1Code.Normal)
{
throw new PCSCException(SCardError.CardUnsupported, "GPO not fully supported");
}
var record = new SmartEmvRecord(entry.Sfi, irecord, (irecord <= entry.OfflineRecords), res.GetData());
EmvRecords.Add(record);
}
}
}
public static AflResult AflParser(byte[] afl)
{
AflResult res = new AflResult();
int i = 0;
while (i < afl.Length)
{
AflEntry entry = new AflEntry();
entry.Sfi = afl[i++] >> 3;
entry.StartRecord = afl[i++];
entry.EndRecord = afl[i++];
entry.OfflineRecords = afl[i++];
res.AflEntries.Add(entry);
}
return(res);
}
