public override bool VerifyCheckSum(byte[] srcIP, byte[] dstIP)
{
int pHeaderLen = (12) + HeaderLength + data.Length;
if ((pHeaderLen & 1) != 0)
{
pHeaderLen += 1;
}
byte[] headerSegment = new byte[pHeaderLen];
int counter = 0;
NetLib.WriteByteArray(headerSegment, ref counter, srcIP);
NetLib.WriteByteArray(headerSegment, ref counter, dstIP);
counter += 1;//[8] = 0
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, Length);
//Pseudo Header added
//Rest of data is normal Header+data (with zerored checksum feild)
NetLib.WriteByteArray(headerSegment, ref counter, GetBytes());
UInt16 CsumCal = IPPacket.InternetChecksum(headerSegment);
//Error.WriteLine("UDP Checksum Good = " + (CsumCal == 0));
return(CsumCal == 0);
}
private void Awake()
{
// Destroy the game object if there is already an OsFps instance.
if (Instance != null)
{
enabled = false;
gameObject.SetActive(false);
Destroy(gameObject);
return;
}
Assert.raiseExceptions = true;
Instance = this;
DontDestroyOnLoad(gameObject);
GameObject guiContainer = Instantiate(GUIContainerPrefab);
DontDestroyOnLoad(guiContainer);
CreateDataObject();
CanvasObject = guiContainer.FindDescendant("Canvas");
var networkMatch = gameObject.AddComponent <NetworkMatch>();
NetLib.NetworkMatch = networkMatch;
NetLib.Setup();
Settings.LoadFromFile(SettingsFilePath);
}
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 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 DHCPopClientID(byte[] data, int offset) //Offset will include Kind and Len
{
offset += 1;
NetLib.ReadByte08(data, ref offset, out len);
//ClientID = new byte[len];
NetLib.ReadByteArray(data, ref offset, len, out clientID);
}
private void CalculateCheckSum()
{
//if (!(i == 5)) //checksum feild is 10-11th byte (5th short), which is skipped
ReComputeHeaderLen();
byte[] headerSegment = new byte[hLen];
int counter = 0;
NetLib.WriteByte08(headerSegment, ref counter, (byte)(_verHi + (hLen >> 2)));
NetLib.WriteByte08(headerSegment, ref counter, typeOfService);//DSCP/ECN
NetLib.WriteUInt16(headerSegment, ref counter, length);
NetLib.WriteUInt16(headerSegment, ref counter, id);
NetLib.WriteByte08(headerSegment, ref counter, fragmentFlags1);
NetLib.WriteByte08(headerSegment, ref counter, fragmentFlags2);
NetLib.WriteByte08(headerSegment, ref counter, ttl);
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, 0); //header csum
NetLib.WriteByteArray(headerSegment, ref counter, SourceIP);
NetLib.WriteByteArray(headerSegment, ref counter, DestinationIP);
//options
for (int i = 0; i < Options.Count; i++)
{
NetLib.WriteByteArray(headerSegment, ref counter, Options[i].GetBytes());
}
counter = hLen;
checksum = InternetChecksum(headerSegment);
}
public bool VerifyCheckSum()
{
ReComputeHeaderLen();
byte[] headerSegment = new byte[hLen];
int counter = 0;
NetLib.WriteByte08(headerSegment, ref counter, (byte)(_verHi + (hLen >> 2)));
NetLib.WriteByte08(headerSegment, ref counter, typeOfService);//DSCP/ECN
NetLib.WriteUInt16(headerSegment, ref counter, length);
NetLib.WriteUInt16(headerSegment, ref counter, id);
NetLib.WriteByte08(headerSegment, ref counter, fragmentFlags1);
NetLib.WriteByte08(headerSegment, ref counter, fragmentFlags2);
NetLib.WriteByte08(headerSegment, ref counter, ttl);
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, checksum); //header csum
NetLib.WriteByteArray(headerSegment, ref counter, SourceIP);
NetLib.WriteByteArray(headerSegment, ref counter, DestinationIP);
//options
for (int i = 0; i < Options.Count; i++)
{
NetLib.WriteByteArray(headerSegment, ref counter, Options[i].GetBytes());
}
counter = hLen;
UInt16 CsumCal = InternetChecksum(headerSegment);
return(CsumCal == 0);
}
public TCPopWS(byte[] data, int offset) //Offset will include Kind and Len
{
//'(24 bits)'
offset += 2;
NetLib.ReadByte08(data, ref offset, out WindowScale);
Log_Verb("Got Window scale of " + WindowScale);
}
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);
}
private void Awake()
{
serverState = new State();
clientState = new State();
networkedComponentTypeInfo = NetLib.GetNetworkedComponentTypeInfo(typeof(State));
sendUpdateAction = new ThrottledAction(SendUpdate, 0.25f);
}
public override void CalculateCheckSum(byte[] srcIP, byte[] dstIP)
{
int pHeaderLen = (12) + HeaderLength + data.Length;
if ((pHeaderLen & 1) != 0)
{
pHeaderLen += 1;
}
byte[] headerSegment = new byte[pHeaderLen];
int counter = 0;
NetLib.WriteByteArray(headerSegment, ref counter, srcIP);
NetLib.WriteByteArray(headerSegment, ref counter, dstIP);
counter += 1;//[8] = 0
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, Length);
//Pseudo Header added
//Rest of data is normal Header+data (with zerored checksum feild)
//Null Checksum
checksum = 0;
NetLib.WriteByteArray(headerSegment, ref counter, GetBytes());
checksum = IPPacket.InternetChecksum(headerSegment); //For performance, we can set this to = zero
}
public override byte[] GetBytes()
{
int len = Length;
byte[] ret = new byte[len];
int counter = 0;
NetLib.WriteUInt16(ret, ref counter, SourcePort);
NetLib.WriteUInt16(ret, ref counter, DestinationPort);
NetLib.WriteUInt32(ret, ref counter, SequenceNumber);
NetLib.WriteUInt32(ret, ref counter, AcknowledgementNumber);
NetLib.WriteByte08(ret, ref counter, dataOffsetAndNS_Flag);
NetLib.WriteByte08(ret, ref counter, flags);
NetLib.WriteUInt16(ret, ref counter, WindowSize);
NetLib.WriteUInt16(ret, ref counter, checksum);
NetLib.WriteUInt16(ret, ref counter, urgentPointer);
//options
for (int i = 0; i < Options.Count; i++)
{
NetLib.WriteByteArray(ret, ref counter, Options[i].GetBytes());
}
counter = headerLength;
NetLib.WriteByteArray(ret, ref counter, data);
return(ret);
}
public override bool VerifyCheckSum(byte[] srcIP, byte[] dstIP)
{
UInt16 TCPLength = (UInt16)(Length);
int pHeaderLen = (12 + TCPLength);
if ((pHeaderLen & 1) != 0)
{
//Error.WriteLine("OddSizedPacket");
pHeaderLen += 1;
}
byte[] headerSegment = new byte[pHeaderLen];
int counter = 0;
NetLib.WriteByteArray(headerSegment, ref counter, srcIP);
NetLib.WriteByteArray(headerSegment, ref counter, dstIP);
counter += 1;//[8] = 0
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, (UInt16)TCPLength);
//Pseudo Header added
//Rest of data is normal neader+data
NetLib.WriteByteArray(headerSegment, ref counter, GetBytes());
UInt16 CsumCal = IPPacket.InternetChecksum(headerSegment);
//Error.WriteLine("Checksum Good = " + (CsumCal == 0));
return(CsumCal == 0);
}
public override void CalculateCheckSum(byte[] srcIP, byte[] dstIP)
{
Int16 TCPLength = (Int16)(headerLength + data.Length);
int pHeaderLen = (12 + TCPLength);
if ((pHeaderLen & 1) != 0)
{
//Error.WriteLine("OddSizedPacket");
pHeaderLen += 1;
}
byte[] headerSegment = new byte[pHeaderLen];
int counter = 0;
NetLib.WriteByteArray(headerSegment, ref counter, srcIP);
NetLib.WriteByteArray(headerSegment, ref counter, dstIP);
counter += 1;//[8] = 0
NetLib.WriteByte08(headerSegment, ref counter, Protocol);
NetLib.WriteUInt16(headerSegment, ref counter, (UInt16)TCPLength);
//Pseudo Header added
//Rest of data is normal Header+data (with zerored checksum feild)
//Null Checksum
checksum = 0;
NetLib.WriteByteArray(headerSegment, ref counter, GetBytes());
checksum = IPPacket.InternetChecksum(headerSegment);
}
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);
}
public override byte[] GetBytes()
{
CalculateCheckSum(); //ReComputeHeaderLen called in CalculateCheckSum
_pl.CalculateCheckSum(SourceIP, DestinationIP);
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, (byte)(_verHi + (hLen >> 2)));
NetLib.WriteByte08(ret, ref counter, typeOfService);//DSCP/ECN
NetLib.WriteUInt16(ret, ref counter, length);
NetLib.WriteUInt16(ret, ref counter, id);
NetLib.WriteByte08(ret, ref counter, fragmentFlags1);
NetLib.WriteByte08(ret, ref counter, fragmentFlags2);
NetLib.WriteByte08(ret, ref counter, ttl);
NetLib.WriteByte08(ret, ref counter, Protocol);
NetLib.WriteUInt16(ret, ref counter, checksum); //header csum
NetLib.WriteByteArray(ret, ref counter, SourceIP);
NetLib.WriteByteArray(ret, ref counter, DestinationIP);;
//options
for (int i = 0; i < Options.Count; i++)
{
NetLib.WriteByteArray(ret, ref counter, Options[i].GetBytes());
}
counter = hLen;
byte[] plBytes = _pl.GetBytes();
NetLib.WriteByteArray(ret, ref counter, plBytes);
return(ret);
}
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
}
//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 int SendUdpData(string targetIP, int targetPort, object udpDataObj)
{
byte[] udpDataByte = ConvertLuaTableToBytes(udpDataObj);
if (udpDataByte == null)
{
return((int)LuaApiResult.SendUdpDataFailed);
}
return((int)(NetLib.SendUdpData(targetIP, targetPort, udpDataByte) ? LuaApiResult.Success : LuaApiResult.SendUdpDataFailed));
}
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 virtual byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
WriteDNSString(ref ret, ref counter, _name);
NetLib.WriteUInt16(ref ret, ref counter, _type);
NetLib.WriteUInt16(ref ret, ref counter, _class);
return(ret);
}
public virtual byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByteArray(ret, ref counter, nameBytes);
NetLib.WriteUInt16(ret, ref counter, Type);
NetLib.WriteUInt16(ret, ref counter, Class);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, (byte)(Length - 2));
NetLib.WriteByteArray(ret, ref counter, clientID);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, (byte)(Length - 2));
NetLib.WriteUInt16(ret, ref counter, MaxMessageSize);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, (byte)(Length - 2));
NetLib.WriteUInt32(ret, ref counter, IPRebindingTimeT2);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, Length);
NetLib.WriteUInt16(ret, ref counter, MaxSegmentSize);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = base.GetBytes();
int counter = base.Length;
NetLib.WriteUInt32(ret, ref counter, ttl);
NetLib.WriteUInt16(ret, ref counter, (UInt16)data.Length);
NetLib.WriteByteArray(ret, ref counter, data);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, Length);
NetLib.WriteByte08(ret, ref counter, WindowScale);
return(ret);
}
public override byte[] GetBytes()
{
byte[] ret = new byte[Length];
int counter = 0;
NetLib.WriteByte08(ret, ref counter, Code);
NetLib.WriteByte08(ret, ref counter, Length);
NetLib.WriteUInt32(ret, ref counter, SenderTimeStamp);
NetLib.WriteUInt32(ret, ref counter, EchoTimeStamp);
return(ret);
}
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);
}
