/// <summary>
/// build message from raw data
/// </summary>
/// <param name="rawdata"></param>
public PackedMessage(byte[] rawdata) : this()
{
if (FidonetHelpers.GetUShort(rawdata, 0) != 2)
{
return;
}
orig.node = FidonetHelpers.GetUShort(rawdata, 2);
dest.node = FidonetHelpers.GetUShort(rawdata, 4);
orig.net = FidonetHelpers.GetUShort(rawdata, 6);
dest.net = FidonetHelpers.GetUShort(rawdata, 8);
attr = new MsgAttributes(FidonetHelpers.GetUShort(rawdata, 10));
Cost = FidonetHelpers.GetUShort(rawdata, 12);
Timestamp = FidonetHelpers.BytesToString(rawdata, 14, 20);
int ptr = 34;
DestUser = FidonetHelpers.NullTerminatedBytesToString(rawdata, ptr);
ptr += DestUser.Length + 1;
FromUser = FidonetHelpers.NullTerminatedBytesToString(rawdata, ptr);
ptr += FromUser.Length + 1;
Subject = FidonetHelpers.NullTerminatedBytesToString(rawdata, ptr);
ptr += Subject.Length + 1;
Text = new MsgText(FidonetHelpers.NullTerminatedBytesToString(rawdata, ptr));
}
/// <summary>
/// Empty constructor
/// </summary>
public PackedMessage()
{
orig = new FidoAddress();
dest = new FidoAddress();
attr = new MsgAttributes();
Cost = 0;
FromUser = string.Empty;
DestUser = string.Empty;
Text = new MsgText();
Timestamp = FidonetHelpers.FidoFormatDatetime(DateTime.Now);
}
/// <summary>
/// Parses packet from raw data
/// </summary>
/// <param name="rawdata"></param>
public MsgPacket(byte[] rawdata) : this()
{
if (FidonetHelpers.GetUShort(rawdata, 18) != 2)
{
return;
}
orig.node = FidonetHelpers.GetUShort(rawdata, 0);
dest.node = FidonetHelpers.GetUShort(rawdata, 2);
orig.net = FidonetHelpers.GetUShort(rawdata, 20);
dest.net = FidonetHelpers.GetUShort(rawdata, 22);
orig.zone = FidonetHelpers.GetUShort(rawdata, 34);
dest.zone = FidonetHelpers.GetUShort(rawdata, 36);
Baud = FidonetHelpers.GetUShort(rawdata, 16);
Timestamp = new DateTime(FidonetHelpers.GetUShort(rawdata, 4),
FidonetHelpers.GetUShort(rawdata, 6) + 1,
FidonetHelpers.GetUShort(rawdata, 8),
FidonetHelpers.GetUShort(rawdata, 10),
FidonetHelpers.GetUShort(rawdata, 12),
FidonetHelpers.GetUShort(rawdata, 14));
Password = FidonetHelpers.BytesToString(rawdata, 24, 8);
// Scan messages
int ptr = 58;
while (FidonetHelpers.GetUShort(rawdata, ptr) == 2)
{
int end = ptr + 34; // skip msg header
int zerofound = 0;
while (zerofound < 4)
{
if (rawdata[end] == 0)
{
zerofound++;
}
end++;
}
byte[] msg = new byte[end - ptr];
Array.Copy(rawdata, ptr, msg, 0, end - ptr);
AddMessage(msg);
ptr = end;
}
}