private void ProcessIncoming(byte[] localMsg, IPEndPoint clientEP)
{
try
{
int currIdx = 0;
if (localMsg[0] != 'D' || localMsg[1] != 'S' || localMsg[2] != 'U' || localMsg[3] != 'C')
{
return;
}
else
{
currIdx += 4;
}
uint protocolVer = BitConverter.ToUInt16(localMsg, currIdx);
currIdx += 2;
if (protocolVer > MaxProtocolVersion)
{
return;
}
uint packetSize = BitConverter.ToUInt16(localMsg, currIdx);
currIdx += 2;
if (packetSize < 0)
{
return;
}
packetSize += 16; //size of header
if (packetSize > localMsg.Length)
{
return;
}
else if (packetSize < localMsg.Length)
{
byte[] newMsg = new byte[packetSize];
Array.Copy(localMsg, newMsg, packetSize);
localMsg = newMsg;
}
uint crcValue = BitConverter.ToUInt32(localMsg, currIdx);
//zero out the crc32 in the packet once we got it since that's whats needed for calculation
localMsg[currIdx++] = 0;
localMsg[currIdx++] = 0;
localMsg[currIdx++] = 0;
localMsg[currIdx++] = 0;
uint crcCalc = Crc32Algorithm.Compute(localMsg);
if (crcValue != crcCalc)
{
return;
}
uint clientId = BitConverter.ToUInt32(localMsg, currIdx);
currIdx += 4;
uint messageType = BitConverter.ToUInt32(localMsg, currIdx);
currIdx += 4;
if (messageType == (uint)MessageType.DSUC_VersionReq)
{
byte[] outputData = new byte[8];
int outIdx = 0;
Array.Copy(BitConverter.GetBytes((uint)MessageType.DSUS_VersionRsp), 0, outputData, outIdx, 4);
outIdx += 4;
Array.Copy(BitConverter.GetBytes((ushort)MaxProtocolVersion), 0, outputData, outIdx, 2);
outIdx += 2;
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
SendPacket(clientEP, outputData, 1001);
}
else if (messageType == (uint)MessageType.DSUC_ListPorts)
{
int numPadRequests = BitConverter.ToInt32(localMsg, currIdx);
currIdx += 4;
if (numPadRequests < 0 || numPadRequests > 4)
{
return;
}
int requestsIdx = currIdx;
for (int i = 0; i < numPadRequests; i++)
{
byte currRequest = localMsg[requestsIdx + i];
if (currRequest >= 4)
{
return;
}
}
byte[] outputData = new byte[16];
for (byte i = 0; i < numPadRequests; i++)
{
byte currRequest = localMsg[requestsIdx + i];
DualShockPadMeta padData = new DualShockPadMeta();
portInfoGet(currRequest, ref padData);
int outIdx = 0;
Array.Copy(BitConverter.GetBytes((uint)MessageType.DSUS_PortInfo), 0, outputData, outIdx, 4);
outIdx += 4;
outputData[outIdx++] = (byte)padData.PadId;
outputData[outIdx++] = (byte)padData.PadState;
outputData[outIdx++] = (byte)padData.Model;
outputData[outIdx++] = (byte)padData.ConnectionType;
byte[] addressBytes = null;
if (padData.PadMacAddress != null)
{
addressBytes = padData.PadMacAddress.GetAddressBytes();
}
if (addressBytes != null && addressBytes.Length == 6)
{
outputData[outIdx++] = addressBytes[0];
outputData[outIdx++] = addressBytes[1];
outputData[outIdx++] = addressBytes[2];
outputData[outIdx++] = addressBytes[3];
outputData[outIdx++] = addressBytes[4];
outputData[outIdx++] = addressBytes[5];
}
else
{
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
outputData[outIdx++] = 0;
}
outputData[outIdx++] = (byte)padData.BatteryStatus;
outputData[outIdx++] = 0;
SendPacket(clientEP, outputData, 1001);
}
}
else if (messageType == (uint)MessageType.DSUC_PadDataReq)
{
byte regFlags = localMsg[currIdx++];
byte idToReg = localMsg[currIdx++];
PhysicalAddress macToReg = null;
{
byte[] macBytes = new byte[6];
Array.Copy(localMsg, currIdx, macBytes, 0, macBytes.Length);
currIdx += macBytes.Length;
macToReg = new PhysicalAddress(macBytes);
}
lock (clients)
{
if (clients.ContainsKey(clientEP))
{
clients[clientEP].RequestPadInfo(regFlags, idToReg, macToReg);
}
else
{
var clientTimes = new ClientRequestTimes();
clientTimes.RequestPadInfo(regFlags, idToReg, macToReg);
clients[clientEP] = clientTimes;
}
}
}
}
catch (Exception e) { }
}