protected DokanError ReadPayload(out byte[] payload, out string extension)
{
payload = null;
extension = String.Empty;
// Make sure the chip is still here
if (!rfidListener.ReconnectOnCard())
{
log.Error("Card reconnection failed");
return(DokanError.ErrorNotReady);
}
IChip chip = rfidListener.GetChip();
ICardService svc = chip.GetService(CardServiceType.CST_NFC_TAG);
IDESFireEV1NFCTag4CardService nfcsvc = svc as IDESFireEV1NFCTag4CardService;
if (nfcsvc == null)
{
log.Error("No NFC service.");
// If no NFC service for this chip, we must fail
return(DokanError.ErrorNotReady);
}
try
{
NdefMessage ndef = nfcsvc.ReadNDEFFile();
if (ndef != null)
{
if (ndef.GetRecordCount() > 0)
{
// For now, only support for one Ndef record per card
object[] records = ndef.Records as object[];
if (records != null)
{
INdefRecord record = records[0] as INdefRecord;
object payloadobj = record.Payload;
if (payloadobj != null)
{
payload = payloadobj as byte[];
payload = ParsePayload(record, payload, out extension);
}
else
{
log.Error("Bad record payload");
}
}
}
else
{
log.Info("No NDEF record in the message");
}
}
else
{
log.Info("No NDEF message on this card");
}
}
catch (COMException ex)
{
log.Info("NDEF read error", ex);
}
return(DokanError.ErrorSuccess);
}