public TCPopTS(byte[] data, int offset) //Offset will include Kind and Len
{
//'(80 bits)'
offset += 2;
NetLib.ReadUInt32(data, ref offset, out SenderTimeStamp);
NetLib.ReadUInt32(data, ref offset, out EchoTimeStamp);
}
public DNSResponseEntry(byte[] buffer, int offset) : base(buffer, offset)
{
offset += base.Length;
UInt16 dataLen;
NetLib.ReadUInt32(buffer, ref offset, out ttl);
NetLib.ReadUInt16(buffer, ref offset, out dataLen);
NetLib.ReadByteArray(buffer, ref offset, dataLen, out data);
}
public DHCP(byte[] data)
{
int offset = 0;
//Bits 0-31 //Bytes 0-3
NetLib.ReadByte08(data, ref offset, out OP);
Log_Verb("OP " + OP);
NetLib.ReadByte08(data, ref offset, out HardwareType);
//Error.WriteLine("HWt " + HardwareType);
NetLib.ReadByte08(data, ref offset, out HardwareAddressLength);
//Error.WriteLine("HWaddrlen " + HardwareAddressLength);
NetLib.ReadByte08(data, ref offset, out Hops);
//Error.WriteLine("Hops " + Hops);
//Bits 32-63 //Bytes 4-7
//TransactionID = BitConverter.ToInt32(data, 4);
NetLib.ReadUInt32(data, ref offset, out TransactionID);
Log_Verb("xid " + TransactionID);
//Bits 64-95 //Bytes 8-11
NetLib.ReadUInt16(data, ref offset, out Seconds);
//Error.WriteLine("sec " + Seconds);
NetLib.ReadUInt16(data, ref offset, out Flags);
//Error.WriteLine("Flags " + Flags);
//Bits 96-127 //Bytes 12-15
NetLib.ReadByteArray(data, ref offset, 4, out ClientIP);
Log_Info("CIP " + ClientIP[0] + "." + ClientIP[1] + "." + ClientIP[2] + "." + ClientIP[3]);
//Bits 128-159 //Bytes 16-19
NetLib.ReadByteArray(data, ref offset, 4, out YourIP);
Log_Info("YIP " + YourIP[0] + "." + YourIP[1] + "." + YourIP[2] + "." + YourIP[3]);
//Bits 160-191 //Bytes 20-23
NetLib.ReadByteArray(data, ref offset, 4, out ServerIP);
Log_Info("SIP " + ServerIP[0] + "." + ServerIP[1] + "." + ServerIP[2] + "." + ServerIP[3]);
//Bits 192-223 //Bytes 24-27
NetLib.ReadByteArray(data, ref offset, 4, out GatewayIP);
Log_Info("GIP " + GatewayIP[0] + "." + GatewayIP[1] + "." + GatewayIP[2] + "." + GatewayIP[3]);
//Bits 192+ //Bytes 28-43
NetLib.ReadByteArray(data, ref offset, 16, out ClientHardwareAddress);
//Bytes 44-107
byte[] sNamebytes;
NetLib.ReadByteArray(data, ref offset, 64, out sNamebytes);
//Bytes 108-235
byte[] filebytes;
NetLib.ReadByteArray(data, ref offset, 128, out filebytes);
//Bytes 236-239
NetLib.ReadUInt32(data, ref offset, out MagicCookie);
//Error.WriteLine("Cookie " + MagicCookie);
bool opReadFin = false;
//int op_offset = 240;
do
{
byte opKind = data[offset];
if (opKind == 255)
{
Options.Add(new DHCPopEND());
opReadFin = true;
offset += 1;
continue;
}
if ((offset + 1) >= data.Length)
{
Log_Error("Unexpected end of packet");
Options.Add(new DHCPopEND());
opReadFin = true;
continue;
}
byte opLen = data[offset + 1];
switch (opKind)
{
case 0:
//Error.WriteLine("Got NOP");
Options.Add(new DHCPopNOP());
offset += 1;
continue;
case 1:
//Error.WriteLine("Got Subnet");
Options.Add(new DHCPopSubnet(data, offset));
break;
case 3:
//Error.WriteLine("Got Router");
Options.Add(new DHCPopRouter(data, offset));
break;
case 6:
//Error.WriteLine("Got DNS Servers");
Options.Add(new DHCPopDNS(data, offset));
break;
case 12:
Options.Add(new DHCPopHOSTNAME(data, offset));
break;
case 15:
//Error.WriteLine("Got Domain Name (Not supported)");
Options.Add(new DHCPopDNSNAME(data, offset));
break;
case 28:
//Error.WriteLine("Got broadcast");
Options.Add(new DHCPopBCIP(data, offset));
break;
case 46:
//Error.WriteLine("Got Request IP");
Options.Add(new DHCPopNBOIPType(data, offset));
break;
case 50:
//Error.WriteLine("Got Request IP");
Options.Add(new DHCPopREQIP(data, offset));
break;
case 51:
//Error.WriteLine("Got IP Address Lease Time");
Options.Add(new DHCPopIPLT(data, offset));
break;
case 53:
//Error.WriteLine("Got MSG");
Options.Add(new DHCPopMSG(data, offset));
break;
case 54:
//Error.WriteLine("Got Server IP");
Options.Add(new DHCPopSERVIP(data, offset));
break;
case 55:
//Error.WriteLine("Got Request List");
Options.Add(new DHCPopREQLIST(data, offset));
break;
case 56:
Options.Add(new DHCPopMSGStr(data, offset));
break;
case 57:
//Error.WriteLine("Got Max Message Size");
Options.Add(new DHCPopMMSGS(data, offset));
break;
case 58:
//Error.WriteLine("Got Renewal (T1) Time");
Options.Add(new DHCPopT1(data, offset));
break;
case 59:
//Error.WriteLine("Got Rebinding (T2) Time");
Options.Add(new DHCPopT2(data, offset));
break;
case 60:
//Error.WriteLine("Got Max Message Size");
Options.Add(new DHCPopClassID(data, offset));
break;
case 61:
//Error.WriteLine("Got Client ID");
Options.Add(new DHCPopClientID(data, offset));
break;
default:
Log_Error("Got Unknown Option " + opKind + " with len " + opLen);
break;
}
offset += opLen + 2;
if (offset >= data.Length)
{
Log_Error("Unexpected end of packet");
Options.Add(new DHCPopEND());
opReadFin = true;
}
} while (opReadFin == false);
}
public DHCP()
{
int x = 0;
NetLib.ReadUInt32(new byte[] { 99, 130, 83, 99 }, ref x, out MagicCookie);
}
public DHCPopT2(byte[] data, int offset) //Offset will include Kind and Len
{
offset += 2;
NetLib.ReadUInt32(data, ref offset, out IPRebindingTimeT2);
}
public DHCPopT1(byte[] data, int offset) //Offset will include Kind and Len
{
offset += 2;
NetLib.ReadUInt32(data, ref offset, out IPRenewalTimeT1);
}
public DHCPopIPLT(byte[] data, int offset) //Offset will include Kind and Len
{
offset += 2;
NetLib.ReadUInt32(data, ref offset, out IPLeaseTime);
}
public TCP(byte[] buffer, int offset, int parLength) //Length = IP payload len
{
int initialOffset = offset;
//Bits 0-31
NetLib.ReadUInt16(buffer, ref offset, out SourcePort);
//Error.WriteLine("src port=" + SourcePort);
NetLib.ReadUInt16(buffer, ref offset, out DestinationPort);
//Error.WriteLine("dts port=" + DestinationPort);
//Bits 32-63
NetLib.ReadUInt32(buffer, ref offset, out SequenceNumber);
//Error.WriteLine("seq num=" + SequenceNumber); //Where in the stream the start of the payload is
//Bits 64-95
NetLib.ReadUInt32(buffer, ref offset, out AcknowledgementNumber);
//Error.WriteLine("ack num=" + AcknowledgmentNumber); //the next expected byte(seq) number
//Bits 96-127
NetLib.ReadByte08(buffer, ref offset, out dataOffsetAndNS_Flag);
//Error.WriteLine("TCP hlen=" + HeaderLength);
NetLib.ReadByte08(buffer, ref offset, out flags);
NetLib.ReadUInt16(buffer, ref offset, out WindowSize);
//Error.WriteLine("win Size=" + WindowSize);
//Bits 127-159
NetLib.ReadUInt16(buffer, ref offset, out checksum);
NetLib.ReadUInt16(buffer, ref offset, out urgentPointer);
//Error.WriteLine("urg ptr=" + UrgentPointer);
//Bits 160+
if (headerLength > 20) //TCP options
{
bool opReadFin = false;
do
{
byte opKind = buffer[offset];
byte opLen = buffer[offset + 1];
switch (opKind)
{
case 0:
//Error.WriteLine("Got End of Options List @ " + (op_offset-offset-1));
opReadFin = true;
break;
case 1:
//Error.WriteLine("Got NOP");
Options.Add(new TCPopNOP());
offset += 1;
continue;
case 2:
//Error.WriteLine("Got MMS");
Options.Add(new TCPopMSS(buffer, offset));
break;
case 3:
Options.Add(new TCPopWS(buffer, offset));
break;
case 8:
//Error.WriteLine("Got Timestamp");
Options.Add(new TCPopTS(buffer, offset));
break;
default:
Log_Error("Got TCP Unknown Option " + opKind + "with len" + opLen);
throw new Exception("Got TCP Unknown Option " + opKind + "with len" + opLen);
//break;
}
offset += opLen;
if (offset == initialOffset + headerLength)
{
//Error.WriteLine("Reached end of Options");
opReadFin = true;
}
} while (opReadFin == false);
}
offset = initialOffset + headerLength;
NetLib.ReadByteArray(buffer, ref offset, parLength - headerLength, out data);
//AllDone
}