public ARPPacket(EthernetFrame Ef)
{
int pktOffset = Ef.HeaderLength;
NetLib.ReadUInt16(Ef.RawPacket.buffer, ref pktOffset, out HardWareType);
//
DataLib.ReadUInt16(Ef.RawPacket.buffer, ref pktOffset, out Protocol);
//
NetLib.ReadByte08(Ef.RawPacket.buffer, ref pktOffset, out HardwareAddressLength);
NetLib.ReadByte08(Ef.RawPacket.buffer, ref pktOffset, out ProtocolAddressLength);
NetLib.ReadUInt16(Ef.RawPacket.buffer, ref pktOffset, out OP);
//Error.WriteLine("OP" + OP);
NetLib.ReadByteArray(Ef.RawPacket.buffer, ref pktOffset, HardwareAddressLength, out SenderHardwareAddress);
//WriteLine("sender MAC :" + SenderHardwareAddress[0] + ":" + SenderHardwareAddress[1] + ":" + SenderHardwareAddress[2] + ":" + SenderHardwareAddress[3] + ":" + SenderHardwareAddress[4] + ":" + SenderHardwareAddress[5]);
NetLib.ReadByteArray(Ef.RawPacket.buffer, ref pktOffset, ProtocolAddressLength, out SenderProtocolAddress);
//WriteLine("sender IP :" + SenderProtocolAddress[0] + "." + SenderProtocolAddress[1] + "." + SenderProtocolAddress[2] + "." + SenderProtocolAddress[3]);
NetLib.ReadByteArray(Ef.RawPacket.buffer, ref pktOffset, HardwareAddressLength, out TargetHardwareAddress);
//WriteLine("target MAC :" + TargetHardwareAddress[0] + ":" + TargetHardwareAddress[1] + ":" + TargetHardwareAddress[2] + ":" + TargetHardwareAddress[3] + ":" + TargetHardwareAddress[4] + ":" + TargetHardwareAddress[5]);
NetLib.ReadByteArray(Ef.RawPacket.buffer, ref pktOffset, ProtocolAddressLength, out TargetProtocolAddress);
//WriteLine("target IP :" + TargetProtocolAddress[0] + "." + TargetProtocolAddress[1] + "." + TargetProtocolAddress[2] + "." + TargetProtocolAddress[3]);
}
public TCPopMSS(byte[] data, int offset) //Offset will include Kind and Len
{
//'(32 bits)'
offset += 2;
NetLib.ReadUInt16(data, ref offset, out MaxSegmentSize);
Log_Verb("Got Maximum segment size of " + MaxSegmentSize);
}
private void ReadDNSString(byte[] buffer, ref int offset, out string value)
{
value = "";
while (buffer[offset] != 0)
{
int len = buffer[offset];
string o;
if (len >= 192)
{
byte[] addrB;
DataLib.ReadByteArray(buffer, ref offset, 2, out addrB);
addrB[0] &= unchecked ((byte)~0xC0);
UInt16 addr;
int tmp = 0;
NetLib.ReadUInt16(addrB, ref tmp, out addr);
tmp = addr;
ReadDNSString(buffer, ref tmp, out o);
value += o + ".";
offset -= 1;
break;
}
else
{
offset += 1;
NetLib.ReadCString(buffer, ref offset, len, out o);
}
offset -= 1;
value += o + ".";
}
value = value.Substring(0, value.Length - 1);
offset += 1;
}
public IGMP(byte[] buffer, int offset, int Length)
{
NetLib.ReadByte08(buffer, ref offset, out Type);
NetLib.ReadByte08(buffer, ref offset, out maxResponseTime);
NetLib.ReadUInt16(buffer, ref offset, out checksum);
NetLib.ReadByteArray(buffer, ref offset, 4, out GroupAddress);
//TODO version 3
}
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);
}
//TODO, add a Recompute length call, and call that in DNS.GetBytes()
public DNSQuestionEntry(byte[] buffer, int offset)
{
int s = offset;
ReadDNSString(buffer, ref offset, out _name);
nameDNSLength = offset - s;
NetLib.ReadUInt16(buffer, ref offset, out _type);
NetLib.ReadUInt16(buffer, ref offset, out _class);
}
public ICMP(byte[] buffer, int offset, int Length) //Length = IP payload len
{
NetLib.ReadByte08(buffer, ref offset, out Type);
//Error.WriteLine("Type = " + Type);
NetLib.ReadByte08(buffer, ref offset, out Code);
//Error.WriteLine("Code = " + Code);
NetLib.ReadUInt16(buffer, ref offset, out checksum);
NetLib.ReadByteArray(buffer, ref offset, 4, out HeaderData);
NetLib.ReadByteArray(buffer, ref offset, Length - 8, out Data);
}
public UDP(byte[] buffer, int offset, int parLength)
{
//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.ReadUInt16(buffer, ref offset, out _Length); //includes header length
NetLib.ReadUInt16(buffer, ref offset, out checksum);
if (_Length > parLength)
{
//Error.WriteLine("Unexpected Length");
_Length = (UInt16)(parLength);
}
//Bits 64+
//data = new byte[Length - HeaderLength];
NetLib.ReadByteArray(buffer, ref offset, Length - HeaderLength, out data);
//AllDone
}
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 DHCPopMMSGS(byte[] data, int offset) //Offset will include Kind and Len
{
offset += 2;
NetLib.ReadUInt16(data, ref offset, out MaxMessageSize);
}
public DNS(byte[] data)
{
int offset = 0;
//Bits 0-31 //Bytes 0-3
NetLib.ReadUInt16(data, ref offset, out ID);
Log_Info("ID " + ID);
NetLib.ReadByte08(data, ref offset, out flags1);
NetLib.ReadByte08(data, ref offset, out flags2);
Log_Info("Is Response " + QR);
Log_Info("OpCode " + (DNSOPCode)OPCode);
Log_Info("Is Authoritative (not cached) " + AA);
Log_Info("Is Truncated " + TC);
Log_Info("Recursion Desired " + RD);
Log_Info("Recursion Available " + RA);
Log_Info("Zero " + ZO);
Log_Info("Authenticated Data? " + AD);
Log_Info("Checking Disabled? " + CD);
Log_Info("Result " + (DNSRCode)RCode);
//Bits 32-63 //Bytes 4-7
UInt16 qCount;
UInt16 aCount;
UInt16 auCount;
UInt16 adCount;
NetLib.ReadUInt16(data, ref offset, out qCount);
Log_Info("QuestionCount " + qCount);
NetLib.ReadUInt16(data, ref offset, out aCount);
Log_Info("AnswerCount " + aCount);
//Bits 64-95 //Bytes 8-11
NetLib.ReadUInt16(data, ref offset, out auCount);
Log_Info("Authority Count " + auCount);
NetLib.ReadUInt16(data, ref offset, out adCount);
Log_Info("Additional Count " + adCount);
//Bits 96+ //Bytes 8+
for (int i = 0; i < qCount; i++)
{
DNSQuestionEntry entry = new DNSQuestionEntry(data, offset);
Log_Info("Q" + i + " Name " + entry.Name);
Log_Info("Q" + i + " Type " + entry.Type);
Log_Info("Q" + i + " Class " + entry.Class);
Log_Info("Q" + i + " Length " + entry.Length);
offset += entry.Length;
Questions.Add(entry);
}
for (int i = 0; i < aCount; i++)
{
DNSResponseEntry entry = new DNSResponseEntry(data, offset);
Log_Info("Ans" + i + " Name " + entry.Name);
Log_Info("Ans" + i + " Type " + entry.Type);
Log_Info("Ans" + i + " Class " + entry.Class);
Log_Info("Ans" + i + " TTL " + entry.TTL);
string str = "";
for (int y = 0; y < entry.Data.Length; y++)
{
str += entry.Data[y] + ":";
}
Log_Info("Ans" + i + " Data " + str.Substring(0, str.Length - 1));
Log_Info("ANS" + i + " Length " + entry.Length);
offset += entry.Length;
Answers.Add(entry);
}
for (int i = 0; i < auCount; i++)
{
DNSResponseEntry entry = new DNSResponseEntry(data, offset);
Log_Info("Auth" + i + " Name " + entry.Name);
Log_Info("Auth" + i + " Type " + entry.Type);
Log_Info("Auth" + i + " Class " + entry.Class);
Log_Info("Auth" + i + " TTL " + entry.TTL);
string str = "";
for (int y = 0; y < entry.Data.Length; y++)
{
str += entry.Data[y] + ":";
}
Log_Info("Auth" + i + " Data " + str.Substring(0, str.Length - 1));
Log_Info("Auth" + i + " Length " + entry.Length);
offset += entry.Length;
Authorities.Add(entry);
}
for (int i = 0; i < adCount; i++)
{
DNSResponseEntry entry = new DNSResponseEntry(data, offset);
Log_Info("Add" + i + " Name " + entry.Name);
Log_Info("Add" + i + " Type " + entry.Type);
Log_Info("Add" + i + " Class " + entry.Class);
Log_Info("Add" + i + " TTL " + entry.TTL);
string str = "";
for (int y = 0; y < entry.Data.Length; y++)
{
str += entry.Data[y] + ":";
}
Log_Info("Add" + i + " Data " + str.Substring(0, str.Length - 1));
Log_Info("Add" + i + " Length " + entry.Length);
offset += entry.Length;
Additional.Add(entry);
}
}
public IPopRouterAlert(byte[] data, int offset)
{
offset += 2;
NetLib.ReadUInt16(data, ref offset, out Value);
}
private void ReadBuffer(byte[] buffer, int offset, int bufferSize, bool fromICMP)
{
int initialOffset = offset;
int pktOffset = offset;
//Bits 0-31
byte v_hl;
NetLib.ReadByte08(buffer, ref pktOffset, out v_hl);
hLen = ((v_hl & 0xF) << 2);
NetLib.ReadByte08(buffer, ref pktOffset, out typeOfService); //TODO, Implement this
//Not sure PS2 supports this
//Log_Error("Class :" + Class.ToString());
////(DSCP support)
//Log_Error("DropValue :" + DropProbability.ToString());
//Log_Error("Supports ECN :" + IsECNCapable.ToString());
//Log_Error("Congestion :" + CongestionEvent.ToString());
////TOS Support
//Log_Error("LowDelay :" + TOSDelay.ToString());
//Log_Error("HighThroughput :" + TOSThroughout.ToString());
//Log_Error("LowCost :" + TOSCost.ToString());
NetLib.ReadUInt16(buffer, ref pktOffset, out length);
if (length > bufferSize - offset)
{
if (!fromICMP)
{
Log_Error("Unexpected Length");
}
length = (UInt16)(bufferSize - offset);
}
//Bits 32-63
NetLib.ReadUInt16(buffer, ref pktOffset, out id); //Send packets with unique IDs
NetLib.ReadByte08(buffer, ref pktOffset, out fragmentFlags1);
NetLib.ReadByte08(buffer, ref pktOffset, out fragmentFlags2);
if (MoreFragments | FragmentOffset != 0)
{
Log_Error("FragmentedPacket");
throw new NotImplementedException("Fragmented Packets are not supported");
}
//Bits 64-95
NetLib.ReadByte08(buffer, ref pktOffset, out ttl);
NetLib.ReadByte08(buffer, ref pktOffset, out Protocol);
NetLib.ReadUInt16(buffer, ref pktOffset, out checksum);
//Bits 96-127
NetLib.ReadByteArray(buffer, ref pktOffset, 4, out SourceIP);
//Bits 128-159
NetLib.ReadByteArray(buffer, ref pktOffset, 4, out DestinationIP);
//WriteLine("Target IP :" + DestinationIP[0] + "." + DestinationIP[1] + "." + DestinationIP[2] + "." + DestinationIP[3]);
//Bits 160+
if (hLen > 20) //IP options (if any)
{
bool opReadFin = false;
do
{
byte opKind = buffer[pktOffset];
byte opLen = buffer[pktOffset + 1];
switch (opKind)
{
case 0:
opReadFin = true;
break;
case 1:
Options.Add(new IPopNOP());
pktOffset += 1;
continue;
case 148:
Options.Add(new IPopRouterAlert(buffer, offset));
break;
default:
Log_Error("Got IP Unknown Option " + opKind + " with len " + opLen);
throw new Exception("Got IP Unknown Option " + opKind + " with len " + opLen);
//break;
}
pktOffset += opLen;
if (pktOffset == initialOffset + hLen)
{
opReadFin = true;
}
} while (opReadFin == false);
}
pktOffset = initialOffset + hLen;
switch (Protocol) //(Prase Payload)
{
case (byte)IPType.ICMP:
_pl = new ICMP(buffer, pktOffset, Length - hLen);
//((ICMP)_pl).VerifyCheckSum(SourceIP, DestinationIP);
break;
case (byte)IPType.IGMP:
_pl = new IGMP(buffer, pktOffset, Length - hLen);
//((ICMP)_pl).VerifyCheckSum(SourceIP, DestinationIP);
break;
case (byte)IPType.TCP:
_pl = new TCP(buffer, pktOffset, Length - hLen);
//((TCP)_pl).VerifyCheckSum(SourceIP, DestinationIP);
break;
case (byte)IPType.UDP:
_pl = new UDP(buffer, pktOffset, Length - hLen);
//((UDP)_pl).VerifyCheckSum(SourceIP, DestinationIP);
break;
default:
_pl = new IPUnkown(buffer, pktOffset, Length - hLen);
Log_Error("Unkown IPv4 Protocol " + Protocol.ToString("X2"));
break;
}
}
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
}
