/// <summary>
/// decode message from parsed pdu data
/// </summary>
/// <param name="pdu"></param>
/// <returns></returns>
public static Message Decode(PDU pdu)
{
var message = new Message();
IDecoder msgDecoder;
var esBits = message.getBits(pdu.encodingScheme);
//if (!esBits[6] && !esBits[7]) {
if (esBits[5])
{
msgDecoder = new UnicodeDecoder();
}
else
{
var bits = Convert.ToByte(esBits[3]) << 1 | Convert.ToByte(esBits[2]);
switch (bits)
{
case 0:
msgDecoder = new SevenBitDecoder();
break;
case 1:
msgDecoder = new EightBitDecoder();
break;
case 2:
msgDecoder = new UnicodeDecoder();
break;
case 3:
default:
throw new Exception("Unknown PDU Message Encoding Scheme!");
}
}
//} else {
// throw new Exception ("Unknown PDU Message Encoding Scheme!");
//}
message.content = msgDecoder.Decode(pdu.data).Trim('\0');
message.smscNumber = message.byteReverse(pdu.smscNumber);
message.senderNumber = message.byteReverse(pdu.senderNumber);
var timeStampAsString = message.byteReverse(pdu.timeStamp);
var dateTimeAsString = "20" + timeStampAsString.Substring(0, 12);
message.dateTime = DateTime.ParseExact(dateTimeAsString, "yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);
// var timeZone = int.Parse (timeStampAsString.Substring (12, 2));
// if ((timeZone >> 7) == 0) {
// message.dateTimeUtc = message.dateTime - new TimeSpan (timeZone / 4, 0, 0);
// }
message.isSplit = pdu.dataHeader.length != 0 && pdu.dataHeader.splitLength != 0;
if (message.isSplit)
{
message.splitCount = pdu.dataHeader.splitCount;
message.splitIndex = pdu.dataHeader.splitIndex;
message.splitId = BitConverter.ToString(pdu.dataHeader.splitId);
}
return(message);
}
public static PDU Parse(byte[] rawPdu)
{
PDU parsed;
using (var ms = new MemoryStream(rawPdu)) {
parsed = PDU.Parse(ms);
}
return(parsed);
}
public static PDU Parse(Stream rawPdu)
{
PDU pdu = new PDU();
rawPdu.Position = 0;
pdu.smscByteLength = (byte)rawPdu.ReadByte();
pdu.smscType = (byte)rawPdu.ReadByte();
pdu.smscNumber = new byte[pdu.smscByteLength - 1];
rawPdu.Read(pdu.smscNumber, 0, pdu.smscByteLength - 1);
pdu.pduHeader = (byte)rawPdu.ReadByte();
pdu.senderLength = (byte)rawPdu.ReadByte();
pdu.senderType = (byte)rawPdu.ReadByte();
pdu.senderNumber = new byte[pdu.senderByteLength];
rawPdu.Read(pdu.senderNumber, 0, pdu.senderByteLength);
pdu.protocalId = (byte)rawPdu.ReadByte();
pdu.encodingScheme = (byte)rawPdu.ReadByte();
pdu.timeStamp = new byte[7];
rawPdu.Read(pdu.timeStamp, 0, 7);
pdu.dataLength = (byte)rawPdu.ReadByte();
var dataHeader = pdu.dataHeader = new DataHeader();
int dataLengthExcludeHeader = pdu.dataLength;
if (pdu.includedDataHeader)
{
dataHeader.length = (byte)rawPdu.ReadByte();
dataHeader.type = (byte)rawPdu.ReadByte();
dataHeader.splitLength = (byte)rawPdu.ReadByte();
dataHeader.splitId = new byte[dataHeader.splitLength - 2];
rawPdu.Read(dataHeader.splitId, 0, dataHeader.splitLength - 2);
dataHeader.splitCount = (byte)rawPdu.ReadByte();
dataHeader.splitIndex = (byte)rawPdu.ReadByte();
dataLengthExcludeHeader -= dataHeader.length + 1;
}
pdu.data = new byte[dataLengthExcludeHeader];
rawPdu.Read(pdu.data, 0, dataLengthExcludeHeader);
return(pdu);
}
