public void SetPorts()
{
if (this.Protocol == 6 || this.Protocol == 17)
{
SPort = HeaderParser.ToInt(this.Data, 0, 16);
DPort = HeaderParser.ToInt(this.Data, 16, 16);
}
}
public IcmpPacket HandleIcmpPacket()
{
IcmpPacket packet = new IcmpPacket();
packet.Source = new IPEndPoint(this.Source, 0);
packet.Destination = new IPEndPoint(this.Destination, 0);
packet.Type = HeaderParser.ToByte(this.Data, 0, 8);
packet.Code = HeaderParser.ToByte(this.Data, 8, 8);
packet.Checksum = HeaderParser.ToUShort(this.Data, 16, 16);
packet.SetData(this.Data, 4, this.Data.Length - 4);
return(packet);
}
public UdpDatagram HandleUdpDatagram()
{
UdpDatagram packet = new UdpDatagram();
int source_port = HeaderParser.ToInt(this.Data, 0, 16);
int dest_port = HeaderParser.ToInt(this.Data, 16, 16);
int length = HeaderParser.ToInt(this.Data, 32, 16) - 8;
packet.Source = new IPEndPoint(this.Source, source_port);
packet.Destination = new IPEndPoint(this.Destination, dest_port);
packet.SetData(this.Data, 8, length);
return(packet);
}
public int GetInnerDataLength()
{
switch (this.Protocol)
{
case 1: return(this.Data.Length - 8);
case 6: return(this.Data.Length - HeaderParser.ToInt(this.Data, 96, 4) * 4);
case 17: return(HeaderParser.ToInt(this.Data, 32, 16) - 8);
default: return(0);
}
}
public int CheckNextFields(byte [] data)
{
int ret = 0;
switch (this.Type)
{
case 0:
case 8:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 37:
case 38:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(16);
this.FieldNames_.Add("Identifier");
this.FieldValues_.Add("Identifier", HeaderParser.ToUInt(data, 32, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Sequence Number");
this.FieldValues_.Add("Sequence Number", HeaderParser.ToUInt(data, 48, 16));
ret = 8;
this.dataIsIp = false;
break;
case 4:
case 11:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(32);
this.FieldNames_.Add("Reserved");
this.FieldValues_.Add("Reserved", HeaderParser.ToUInt(data, 32, 32));
ret = 8;
this.dataIsIp = true;
break;
case 10:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(32);
this.FieldNames_.Add("Reserved");
this.FieldValues_.Add("Reserved", HeaderParser.ToUInt(data, 32, 32));
ret = 8;
this.dataIsIp = false;
break;
case 3:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(16);
this.FieldNames_.Add("Unused");
this.FieldValues_.Add("Unused", HeaderParser.ToUInt(data, 32, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Next Hop MTU");
this.FieldValues_.Add("Next Hop MTU", HeaderParser.ToUInt(data, 48, 16));
ret = 8;
this.dataIsIp = true;
break;
case 5:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(32);
this.FieldNames_.Add("IP Address");
this.FieldValues_.Add("IP Address", HeaderParser.ToUInt(data, 32, 32));
ret = 8;
this.dataIsIp = true;
break;
case 31:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(32);
this.FieldNames_.Add("Offset");
this.FieldValues_.Add("Offset", HeaderParser.ToUInt(data, 32, 32));
ret = 8;
this.dataIsIp = false;
break;
case 12:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(8);
this.FieldNames_.Add("Pointer");
this.FieldValues_.Add("Pointer", HeaderParser.ToUInt(data, 32, 8));
this.FieldLength_.Add(24);
this.FieldNames_.Add("Unused");
this.FieldValues_.Add("Unused", HeaderParser.ToUInt(data, 40, 24));
ret = 8;
this.dataIsIp = true;
break;
case 9:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(8);
this.FieldNames_.Add("Advertisement Count");
this.FieldValues_.Add("Advertisement Count", HeaderParser.ToUInt(data, 32, 8));
this.FieldLength_.Add(8);
this.FieldNames_.Add("Address Entry Size");
this.FieldValues_.Add("Address Entry Size", HeaderParser.ToUInt(data, 40, 8));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Life Time");
this.FieldValues_.Add("Life Time", HeaderParser.ToUInt(data, 48, 16));
ret = 8;
this.dataIsIp = false;
break;
case 30:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(16);
this.FieldNames_.Add("Identifier");
this.FieldValues_.Add("Identifier", HeaderParser.ToUInt(data, 32, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Unused");
this.FieldValues_.Add("Unused", HeaderParser.ToUInt(data, 48, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Out Bount Hop Count");
this.FieldValues_.Add("Out Bount Hop Count", HeaderParser.ToUInt(data, 64, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Return Hop Count");
this.FieldValues_.Add("Return Hop Count", HeaderParser.ToUInt(data, 80, 16));
this.FieldLength_.Add(32);
this.FieldNames_.Add("Output Link Speed");
this.FieldValues_.Add("Output Link Speed", HeaderParser.ToUInt(data, 96, 32));
this.FieldLength_.Add(32);
this.FieldNames_.Add("Output Link MTU");
this.FieldValues_.Add("Output Link MTU", HeaderParser.ToUInt(data, 128, 32));
ret = 20;
this.dataIsIp = false;
break;
case 40:
FieldNames_ = new ArrayList();
FieldLength_ = new ArrayList();
FieldValues_ = new Hashtable();
this.FieldLength_.Add(16);
this.FieldNames_.Add("Reserved");
this.FieldValues_.Add("Reserved", HeaderParser.ToUInt(data, 32, 16));
this.FieldLength_.Add(16);
this.FieldNames_.Add("Pointer");
this.FieldValues_.Add("Pointer", HeaderParser.ToUInt(data, 48, 16));
ret = 8;
this.dataIsIp = false;
break;
default: break;
}
return(ret);
}