protected DokanError WritePayload(byte[] payload, string extension)
{
// 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
{
IStorageCardService storage = chip.GetService(CardServiceType.CST_STORAGE) as IStorageCardService;
if (storage != null)
{
storage.Erase();
}
nfcsvc.CreateNFCApplication(1, null);
NdefMessage ndef = new NdefMessage();
switch (extension)
{
case "txt":
log.Info("Adding Text Record");
ndef.AddRawTextRecord(payload);
break;
case "url":
string lnk = Encoding.UTF8.GetString(payload);
int urlpos = lnk.IndexOf("URL=");
if (urlpos > -1)
{
urlpos += 4;
int end = lnk.IndexOf(Environment.NewLine, urlpos);
if (end < 0)
{
end = lnk.Length - urlpos;
}
else
{
end -= urlpos;
}
string url = lnk.Substring(urlpos, end).Trim();
log.Info(String.Format("Adding Uri Record `{0}`", url));
ndef.AddUriRecord(url, UriType.NO_PREFIX);
}
else
{
log.Warn("Cannot found URL on link file content.");
}
break;
default:
string mime = System.Web.MimeMapping.GetMimeMapping("dummy." + extension);
log.Info(String.Format("Adding Mime Record `{0}`", mime));
ndef.AddMimeMediaRecord(mime, Encoding.ASCII.GetString(payload)); // This shouldn't be a string here
break;
}
nfcsvc.WriteNDEFFile(ndef);
ResetCache();
}
catch (COMException ex)
{
log.Info("NDEF write error", ex);
}
return(DokanError.ErrorSuccess);
}
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);
}