public override void Decode()
{
string tail = body;
byte[] bt;
service_type = Common.HexToString(Common.GetCString(ref tail));
bt = Common.ConvertHexStringToByteArray(tail.Substring(0, 4));
tail = tail.Remove(0, 4);
source_addr_ton = bt[0];
source_addr_npi = bt[1];
source_addr = Common.HexToString(Common.GetCString(ref tail));
bt = Common.ConvertHexStringToByteArray(tail.Substring(0, 4));
tail = tail.Remove(0, 4);
dest_addr_ton = bt[0];
dest_addr_npi = bt[1];
destination_address = Common.HexToString(Common.GetCString(ref tail));
bt = Common.ConvertHexStringToByteArray(tail.Substring(0, 6));
tail = tail.Remove(0, 6);
esm_class = bt[0];
protocol_id = bt[1];
priority_flag = bt[2];
schedule_delivery_time = Common.HexToString(Common.GetCString(ref tail));
validity_period = Common.HexToString(Common.GetCString(ref tail));
bt = Common.ConvertHexStringToByteArray(tail.Substring(0, 10));
tail = tail.Remove(0, 10);
registered_delivery = bt[0].ToString();
replace_if_present_flag = bt[1];
data_coding = bt[2];
sm_default_msg_id = bt[3];
sm_length = bt[4];
if (sm_length != 0)
{
switch (data_coding)
{
case 8: // UNICODE
body_hex = tail.Substring(0, sm_length * 2);
if (body_hex.StartsWith("050003"))
{
multipart_header = body_hex.Substring(0, 12);
short_message = Encoding.BigEndianUnicode.GetString(Common.ConvertHexStringToByteArray(tail.Substring(12, sm_length * 2 - 12)));
}
else
{
if (esm_class != 4)
{
short_message = Encoding.BigEndianUnicode.GetString(Common.ConvertHexStringToByteArray(body_hex));
}
else
{
short_message = Encoding.Unicode.GetString(Common.ConvertHexStringToByteArray(body_hex));
}
}
break;
case 3: // Latin 1 (ISO-8859-1)
case 1: // ASCII
case 0:
body_hex = tail.Substring(0, sm_length * 2);
if (is_8bit)
{
short_message = Common.Convert8bitTo7bit(body_hex);
}
else
{
if (body_hex.StartsWith("050003"))
{
multipart_header = body_hex.Substring(0, 12);
short_message = Common.HexToString(tail.Substring(12, sm_length * 2 - 12));
}
else
{
short_message = Common.HexToString(body_hex);
//short_message = Encoding.Unicode.GetString(Common.ConvertHexStringToByteArray(body_hex));
}
}
break;
default:
body_hex = tail.Substring(0, sm_length * 2);
short_message = body_hex;
break;
}
}
else
{
base.LoadTLV(tail);
//message_payload
if (tlv.ContainsKey("0424"))
{
switch (data_coding)
{
// UNICODE
case 8:
body_hex = tlv["0424"].ToString();
short_message = Encoding.BigEndianUnicode.GetString(
Common.ConvertHexStringToByteArray(body_hex)
);
break;
//ASCII
case 1:
case 0:
body_hex = tlv["0424"].ToString();
short_message = Common.HexToString(body_hex);
break;
default:
body_hex = tlv["0424"].ToString();
short_message = Common.HexToString(body_hex);
break;
}
}
}
if (short_message == null)
{
short_message = String.Empty;
}
// example from SMSinform - megafon
// id:32C84E82 sub:001 dlvrd:001 submit date:0709111120 done date:0709111120 stat:DELIVRD'
// Delivery report
if (esm_class == 4)
{
int i_status;
var reg = Regex.Match(short_message, @"id:\s*([a-zA-Z\-0-9]+)", RegexOptions.IgnoreCase);
if (reg.Groups.Count == 2)
{
reference_from = reg.Groups[1].Value;
}
if (reference_from == String.Empty)
{
reference_from = "";
}
i_status = short_message.IndexOf("stat:", StringComparison.CurrentCultureIgnoreCase);
if (i_status == -1)
{
//gateEvents.LogEvent(LogEvent.Level.Error, "Error decoding delivery report: no reference; " + short_message);
delivery_status = "DELIVR";
return;
}
//delivery_status = short_message.Substring(i_status + 5, i_p - i_status - 5, 7);
// in common SMSC returns 7 symbols , but some just 6
// so let for first 6 symbols
try
{
delivery_status = short_message.Substring(i_status + 5, 6);
}
catch
{
delivery_status = String.Empty;
gateEvents.LogEvent(LogEvent.Level.Error, "Delivery error code new " + short_message);
}
if (delivery_status == String.Empty)
{
delivery_status = "DELIVR";
}
}
}
public void MessageHandler(object mess)
{
var data = new List <string>();
int PDULength = 0;
last_pdu_time = DateTime.Now;
try
{
_partial_pdu += mess.ToString();
PDULength = int.Parse(_partial_pdu.Substring(0, 8), System.Globalization.NumberStyles.HexNumber);
if (PDULength > 1500)
{
_partial_pdu = "";
return;
}
while (PDULength != 0)
{
data.Add(_partial_pdu.Substring(0, PDULength * 2));
_partial_pdu = _partial_pdu.Substring(PDULength * 2);
PDULength = _partial_pdu != "" ? int.Parse(_partial_pdu.Substring(0, 8), System.Globalization.NumberStyles.HexNumber) : 0;
}
}
catch (CommandLengthException)
{
Events.LogEvent(LogEvent.Level.Error, "Command length exception");
}
catch (Exception e1)
{
Events.LogEvent(LogEvent.Level.Error, channel_name + " - " + e1 + ":" + PDULength);
_partial_pdu = "";
return;
}
foreach (string pdu in data)
{
if (string.IsNullOrEmpty(pdu) || pdu.Length < 8)
{
continue;
}
try
{
PduHandler(pdu);
}
catch (Exception e1)
{
Events.LogEvent(LogEvent.Level.Error, channel_name + " - " + e1 + ":" + pdu);
}
}
}
