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);
}
protected byte[] ParsePayload(INdefRecord record, byte[] payload, out string extension)
{
// Parse payload data because current liblogicalaccess implementation is too basic
// This is stupid, end-user shouldn't know about NDEF structure
// It should be done on liblogicalaccess side!
extension = String.Empty;
byte[] data = null;
object otype = record.Type;
if (otype != null)
{
byte[] type = (byte[])otype;
string strType = System.Text.Encoding.UTF8.GetString(type).ToLower();
log.Info(String.Format("Ndef Record type: {0}", strType));
if (type.Length == 1 && type[0] == 0x54)
{
if (payload.Length > 0)
{
string encodingname = "us-ascii";
if (payload[0] != 0)
{
encodingname = System.Text.Encoding.ASCII.GetString(payload, 1, payload[0]);
}
Encoding encoding = Encoding.GetEncoding(encodingname);
if (encoding == null)
{
encoding = Encoding.ASCII;
encodingname = encoding.EncodingName;
}
int length = payload.Length - 1 - payload[0];
if (length > 0)
{
data = new byte[length];
Array.Copy(payload, payload[0] + 1, data, 0, length);
}
}
// Text record type
extension = "txt";
}
else if (type.Length == 1 && type[0] == 0x55)
{
if (payload.Length > 0)
{
UriType uriType = UriType.NO_PREFIX;
string uri = String.Empty;
if (payload[0] != 0)
{
uriType = (UriType)payload[0];
}
int length = payload.Length - 1;
if (length != 0)
{
uri = System.Text.Encoding.UTF8.GetString(payload, 1, length);
}
switch (uriType)
{
case UriType.HTTP:
uri = "http://" + uri;
break;
case UriType.HTTP_WWW:
uri = "http://www." + uri;
break;
case UriType.HTTPS:
uri = "https://" + uri;
break;
case UriType.HTTPS_WWW:
uri = "https://www." + uri;
break;
case UriType.MAIL_TO:
uri = "mailto://" + uri;
break;
case UriType.TEL:
uri = "tel://" + uri;
break;
case UriType.URI_FILE:
uri = "file://" + uri;
break;
}
data = System.Text.Encoding.UTF8.GetBytes(uri);
}
// Uri record type
extension = "url";
}
else if (record.TNF == TNF.TNF_MIME_MEDIA)
{
data = payload;
extension = GetDefaultExtension(strType);
}
}
return(data);
}
protected byte[] ParsePayload(INdefRecord record, byte[] payload, out string extension)
{
// Parse payload data because current liblogicalaccess implementation is too basic
// This is stupid, end-user shouldn't know about NDEF structure
// It should be done on liblogicalaccess side!
extension = String.Empty;
byte[] data = null;
object otype = record.Type;
if (otype != null)
{
byte[] type = (byte[])otype;
string strType = System.Text.Encoding.UTF8.GetString(type).ToLower();
log.Info(String.Format("Ndef Record type: {0}", strType));
if (type.Length == 1 && type[0] == 0x54)
{
if (payload.Length > 0)
{
string encodingname = "us-ascii";
if (payload[0] != 0)
encodingname = System.Text.Encoding.ASCII.GetString(payload, 1, payload[0]);
Encoding encoding = Encoding.GetEncoding(encodingname);
if (encoding == null)
{
encoding = Encoding.ASCII;
encodingname = encoding.EncodingName;
}
int length = payload.Length - 1 - payload[0];
if (length > 0)
{
data = new byte[length];
Array.Copy(payload, payload[0] + 1, data, 0, length);
}
}
// Text record type
extension = "txt";
}
else if (type.Length == 1 && type[0] == 0x55)
{
if (payload.Length > 0)
{
UriType uriType = UriType.NO_PREFIX;
string uri = String.Empty;
if (payload[0] != 0)
uriType = (UriType)payload[0];
int length = payload.Length - 1;
if (length != 0)
uri = System.Text.Encoding.UTF8.GetString(payload, 1, length);
switch (uriType)
{
case UriType.HTTP:
uri = "http://" + uri;
break;
case UriType.HTTP_WWW:
uri = "http://www." + uri;
break;
case UriType.HTTPS:
uri = "https://" + uri;
break;
case UriType.HTTPS_WWW:
uri = "https://www." + uri;
break;
case UriType.MAIL_TO:
uri = "mailto://" + uri;
break;
case UriType.TEL:
uri = "tel://" + uri;
break;
case UriType.URI_FILE:
uri = "file://" + uri;
break;
}
data = System.Text.Encoding.UTF8.GetBytes(uri);
}
// Uri record type
extension = "url";
}
else if (record.TNF == TNF.TNF_MIME_MEDIA)
{
data = payload;
extension = GetDefaultExtension(strType);
}
}
return data;
}
