public RtdHandoverSelector(RtdAlternativeCarrier alternative_carrier, AbsoluteUri absolute_uri) : base(Ndef.NDEF_HEADER_TNF_NFC_RTD_WKN, "Hs")
{
version = 0x12;
_alternative_carriers = new RtdAlternativeCarrier[1];
_alternative_carriers[0] = alternative_carrier;
_related_absolute_uris = new AbsoluteUri[1];
_related_absolute_uris[0] = absolute_uri;
}
public static bool Parse(byte[] buffer, ref int offset, ref Ndef ndef, ref bool terminated)
{
if (offset > buffer.Length)
{
return(false);
}
terminated = false;
ndef = null;
/* Header */
if (offset + 1 > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Header' byte");
return(false);
}
byte header = buffer[offset++];
if (header == 0)
{
Trace.WriteLine("Empty byte?");
return(false);
}
/* Type length */
if (offset + 1 > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Type Length' byte");
return(false);
}
int type_length = buffer[offset++];
/* Payload length */
int payload_length = 0;
if ((header & NDEF_HEADER_SHORT_RECORD) != 0)
{
if (offset + 1 > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Payload Length' byte");
return(false);
}
payload_length = buffer[offset++];
}
else
{
if (offset + 4 > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Payload Length' dword");
return(false);
}
payload_length = buffer[offset++]; payload_length *= 0x00000100;
payload_length += buffer[offset++]; payload_length *= 0x00000100;
payload_length += buffer[offset++]; payload_length *= 0x00000100;
payload_length += buffer[offset++];
}
/* ID Length */
int id_length = 0;
if ((header & NDEF_HEADER_ID_LENGTH_PRESENT) != 0)
{
if (offset + 1 > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'ID Length' byte");
return(false);
}
id_length = buffer[offset++];
}
/* Type */
byte[] type = null;
if (type_length > 0)
{
if (offset + type_length > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Type' bytes");
return(false);
}
type = new byte[type_length];
for (int i = 0; i < type_length; i++)
{
type[i] = buffer[offset++];
}
}
/* ID */
byte[] id = null;
if (id_length > 0)
{
if (offset + id_length > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'ID' bytes");
return(false);
}
id = new byte[id_length];
for (int i = 0; i < id_length; i++)
{
id[i] = buffer[offset++];
}
}
/* Payload */
byte[] payload = null;
if (payload_length > 0)
{
if (offset + payload_length > buffer.Length)
{
Trace.WriteLine("NDEF truncated after 'Payload' bytes");
return(false);
}
payload = new byte[payload_length];
for (int i = 0; i < payload_length; i++)
{
payload[i] = buffer[offset++];
}
}
/* OK */
string type_s = CardBuffer.StringFromBytes(type);
switch (header & NDEF_HEADER_TNF_MASK)
{
case NDEF_HEADER_TNF_EMPTY:
break;
case NDEF_HEADER_TNF_NFC_RTD_WKN:
if (type_s.Equals("Sp"))
{
Trace.WriteLine("Found a SmartPoster");
ndef = new RtdSmartPoster(payload);
}
else
if (type_s.Equals("U"))
{
Trace.WriteLine("Found an URI");
ndef = new RtdUri(payload);
}
else
if (type_s.Equals("T"))
{
Trace.WriteLine("Found a Text");
ndef = new RtdText(payload);
}
else
if (type_s.Equals("act"))
{
Trace.WriteLine("Found an Action");
ndef = new RtdSmartPosterAction(payload);
}
else
if (type_s.Equals("s"))
{
Trace.WriteLine("Found a Size");
ndef = new RtdSmartPosterTargetSize(payload);
}
else
if (type_s.Equals("t"))
{
Trace.WriteLine("Found a MIME-Type");
ndef = new RtdSmartPosterTargetType(payload);
}
else
if (type_s.Equals("Hs"))
{
Trace.WriteLine("Found a Handover Selector");
ndef = new RtdHandoverSelector(payload, ref buffer, ref offset);
}
else
if (type_s.Equals("ac"))
{
Trace.WriteLine("Found a Alternative Carrier");
ndef = new RtdAlternativeCarrier(payload);
}
else
{
Trace.WriteLine("Found an unknown RTD : " + type_s);
}
break;
case NDEF_HEADER_TNF_MEDIA_TYPE:
if (type_s.ToLower().Equals("text/x-vcard"))
{
Trace.WriteLine("Found a vCard");
ndef = new RtdVCard(payload);
}
else
{
Trace.WriteLine("Found a MIME Media : " + type_s);
ndef = new RtdMedia(type_s, payload);
}
break;
case NDEF_HEADER_TNF_ABSOLUTE_URI:
if (type_s.Equals("U"))
{
Trace.WriteLine("Found an absolute URI");
ndef = new AbsoluteUri(id, payload);
}
break;
case NDEF_HEADER_TNF_NFC_RTD_EXT:
Trace.WriteLine("Found TNF urn:nfc:ext");
break;
case NDEF_HEADER_TNF_UNKNOWN:
Trace.WriteLine("Found TNF unknown");
break;
case NDEF_HEADER_TNF_UNCHANGED:
Trace.WriteLine("Found TNF unchanged");
break;
case NDEF_HEADER_TNF_RESERVED:
Trace.WriteLine("Found TNF reserved");
break;
default:
return(false); // Invalid
}
if (ndef == null)
{
ndef = new Ndef(header, type, id, payload);
}
if (offset >= buffer.Length)
{
Trace.WriteLine("Done!");
terminated = true;
}
return(true);
}