private static void DoClientAuth(object stateo)
{
var state = (ClientAuthstate)stateo;
// obtain key auth
try
{
var npticket = DWTickets.ParseNPTicket(state.Ticket);
// /validate/:token/:ip/:server/:username
var url = "http://127.0.0.1:6378/validate/" + npticket.SessionID + "/0/false/" + npticket.NickName;
//var url = "http://server.repziw4.de/check_session.php?sid=" + npticket.SessionID;
var wc = new WebClient();
var webString = wc.DownloadString(url);
var authData = webString.Split(' ');
Log.Debug(webString);
Log.Debug(authData[0]);
if (authData[0] == "1")
{
var userID = int.Parse(authData[1]);
if ((uint)(npticket.SteamID & 0xFFFFFFFF) == userID)
{
var ivBase = BitConverter.ToUInt32(DWCrypto.GenerateRandom(4), 0);
var iv = DWCrypto.CalculateInitialVector(ivBase);
var key = npticket.EncryptionKey;
var globalKey = DWCrypto.GenerateRandom(24);
var gameTicket = DWTickets.BuildGameTicket(globalKey, state.GameID, npticket.NickName, 0);
var lsgTicket = DWTickets.BuildLSGTicket(globalKey, npticket.SteamID, userID, npticket.NickName);
var encryptedGameTicket = DWCrypto.Encrypt(iv, key, gameTicket);
var reply = state.Packet.MakeReply(29, true);
reply.BitBuffer.UseDataTypes = false;
reply.BitBuffer.WriteBoolean(false);
reply.BitBuffer.WriteUInt32(700);
reply.BitBuffer.WriteUInt32(ivBase);
reply.BitBuffer.WriteBytes(encryptedGameTicket);
reply.BitBuffer.WriteBytes(lsgTicket);
reply.Send(false);
Log.Debug("user " + userID + " authenticated client: " + state.Source + "");
return;
}
}
wc.Dispose();
}
catch (Exception e)
{
Log.Debug("Exception: " + e.ToString());
}
}
private static void DoServerAuth(object stateo)
{
var state = (ServerAuthstate)stateo;
// obtain key auth
try
{
// /validate/:token/:ip/:server/:username
//var url = "http://server.repziw4.de/check_key.php?key=" + state.KeyData.ToString("x16");
var url = "http://127.0.0.1:6378/validate/" + state.KeyData.ToString("x16") + "/0/true/0";
var wc = new WebClient();
var resultData = wc.DownloadString(url);
var authData = resultData.Split(' ');
if (authData[0] == "1")
{
var licenseType = int.Parse(authData[1]);
var userID = int.Parse(authData[3]);
var key = Extensions.SwapBytes64(Extensions.ParseHexString(authData[2]));
// generate iv
var ivBase = BitConverter.ToUInt32(DWCrypto.GenerateRandom(4), 0);
var iv = DWCrypto.CalculateInitialVector(ivBase);
// blah
var globalKey = DWCrypto.GenerateRandom(24);
var gameTicket = DWTickets.BuildGameTicket(globalKey, state.GameID, "", (byte)licenseType); // 4: official
var lsgTicket = DWTickets.BuildLSGTicket(globalKey, state.KeyData, userID, "");
var encryptedGameTicket = DWCrypto.Encrypt(iv, key, gameTicket);
var reply = state.Packet.MakeReply(13, true);
reply.BitBuffer.UseDataTypes = false;
reply.BitBuffer.WriteBoolean(false);
reply.BitBuffer.WriteUInt32(700);
reply.BitBuffer.WriteUInt32(ivBase);
reply.BitBuffer.WriteBytes(encryptedGameTicket);
reply.BitBuffer.WriteBytes(lsgTicket);
reply.Send(false);
Log.Debug("user " + userID + " authenticated server");
return;
}
}
catch (Exception e)
{
Log.Debug("Exception: " + e.ToString());
}
}
private static void DoIW5ServerAuth(object stateo)
{
var state = (ServerAuthstate)stateo;
// obtain key auth
try
{
var query = Query.EQ("keyHash", (long)state.KeyData);
var result = Database.AServerKeys.Find(query);
if (result.Count() > 0)
{
var keyEntry = result.First();
var keyString = keyEntry.key;
var thash = new TigerHash();
var key = thash.ComputeHash(Encoding.ASCII.GetBytes(keyString));
// generate iv
var ivBase = BitConverter.ToUInt32(DWCrypto.GenerateRandom(4), 0);
var iv = DWCrypto.CalculateInitialVector(ivBase);
// blah
var globalKey = DWCrypto.GenerateRandom(24);
var gameTicket = DWTickets.BuildGameTicket(globalKey, state.GameID, "", 0); // 4: official
var lsgTicket = DWTickets.BuildLSGTicket(globalKey, state.KeyData, 1, "");
var encryptedGameTicket = DWCrypto.Encrypt(iv, key, gameTicket);
var reply = state.Packet.MakeReply(13, true);
reply.BitBuffer.UseDataTypes = false;
reply.BitBuffer.WriteBoolean(false);
reply.BitBuffer.WriteUInt32(700);
reply.BitBuffer.WriteUInt32(ivBase);
reply.BitBuffer.WriteBytes(encryptedGameTicket);
reply.BitBuffer.WriteBytes(lsgTicket);
reply.Send(false);
return;
}
}
catch (Exception e)
{
Log.Debug("Exception: " + e.ToString());
}
}
public void Send(bool encrypted)
{
var buffer = (BitBuffer != null) ? BitBuffer.Bytes : ByteBuffer.Bytes;
byte[] array = null;
if (!encrypted)
{
array = new byte[buffer.Length + 6];
Array.Copy(BitConverter.GetBytes(buffer.Length + 2), 0, array, 0, 4);
array[4] = 0;
array[5] = (byte)Data.Get <int>("type");
Array.Copy(buffer, 0, array, 6, buffer.Length);
}
else
{
array = new byte[buffer.Length + 4 + 4 + 1];
Array.Copy(BitConverter.GetBytes(buffer.Length + 5), 0, array, 0, 4);
array[4] = 1;
Array.Copy(BitConverter.GetBytes(0x13371337), 0, array, 5, 4);
var iv = DWCrypto.CalculateInitialVector(0x13371337);
var key = DWRouter.GetGlobalKey(Data);
var crypted = DWCrypto.Encrypt(iv, key, buffer);
Array.Resize(ref array, crypted.Length + 4 + 4 + 1);
Array.Copy(BitConverter.GetBytes(array.Length - 4), 0, array, 0, 4);
Array.Copy(crypted, 0, array, 9, crypted.Length);
}
//Log.Debug("sending a reply");
Data.Arguments["handled"] = true;
MessageData message = new MessageData("none");
message["data"] = array;
message["cid"] = Data["cid"];
TCPHandler.Net_TcpSend(message);
}
public void handlePacket(MessageData data)
{
var buffer = data.Get <byte[]>("data");
var source = data.Get <EndPoint>("source");
var stream = new MemoryStream(buffer);
var reader = new BinaryReader(stream);
var time = data.Get <DateTime>("time");
var delay = (DateTime.Now - time).TotalMilliseconds;
var delay2 = DateTime.Now;
try
{
while (stream.Position < stream.Length)
{
var origin = 0;
var len = 0;
if (_bytesRead == 0)
{
_totalBytes = 0;
try
{
_totalBytes = reader.ReadInt32();
}
catch
{
_totalBytes = 0;
}
//Log.Info("GOT A PACKET OF SIZE " + _totalBytes.ToString("X"));
if (_totalBytes == 0xC8)
{
_totalBytes = 0;
break;
}
if (_totalBytes > (256 * 1024))
{
Log.Error("LENGTH IS XBOX");
break;
}
if (_totalBytes == 0 || _totalBytes < 0)
{
//TCPHandler.sendPacket(message, client);
MessageData packet = new MessageData("none");
packet["data"] = new byte[4];
packet["cid"] = data.Get <string>("cid");
TCPHandler.Net_TcpSend(packet);
continue;
}
_messageBuffer = new MemoryStream();
origin += 4;
len -= 4;
}
len += Math.Min((buffer.Length - (int)stream.Position), (_totalBytes - _bytesRead));
var newBytes = reader.ReadBytes(len);
_messageBuffer.Write(newBytes, 0, len);
_bytesRead += len;
if (_bytesRead > _totalBytes)
{
//Debugger.Break();
}
if (_bytesRead >= _totalBytes)
{
_bytesRead = 0;
_messageBuffer.Position = 0;
var breader = new BinaryReader(_messageBuffer);
_totalBytes--;
var pdtype = breader.ReadByte();
var encrypted = (pdtype == 1); // can be 0, 1 and 0xFF
var ptype = 0xFF;
byte[] pdata = null;
if (pdtype == 0xFF)
{
// TODO: handle this one
Log.Debug("Got a 0xFF pdtype!");
//return;
continue;
}
var initTime = DateTime.Now;
if (!encrypted)
{
ptype = breader.ReadByte();
_totalBytes -= 1;
pdata = breader.ReadBytes(_totalBytes);
}
else
{
try
{
var key = GetGlobalKey(data);
var iv = DWCrypto.CalculateInitialVector(breader.ReadUInt32());
var edata = breader.ReadBytes(_totalBytes - 4);
var ddata = DWCrypto.Decrypt(iv, key, edata);
var dstream = new MemoryStream(ddata);
var dreader = new BinaryReader(dstream);
// TODO: find out why this hash isn't just truncated SHA-1
var hash = dreader.ReadUInt32();
ptype = dreader.ReadByte();
pdata = dreader.ReadBytes((int)(dstream.Length - 5));
dreader.Close();
dstream.Close();
}
catch { }
}
var initTime2 = DateTime.Now;
var delay3 = (DateTime.Now - delay2).TotalMilliseconds;
//Log.Debug("Received a " + _totalBytes + " byte packet (type " + ptype + ") from DemonWare - delay " + delay + "ms. delay after reading " + delay3 + "ms.");
/*
* var message = Messages.NewMessage("dw.packet-received");
* message["data"] = pdata;
* message["type"] = ptype;
* message["crypt"] = encrypted;
* message["source"] = source;
* message["cid"] = data["cid"];
* message["delay"] = delay;
* message["time"] = DateTime.Now;
* message.SendNow();
*/
MessageData message = new MessageData("none");
message["data"] = pdata;
message["type"] = ptype;
message["crypt"] = encrypted;
message["source"] = source;
message["cid"] = data["cid"];
message["ci"] = data["ci"];
message["delay"] = delay;
message["time"] = DateTime.Now;
redirectPacket(message);
/*var msec = (int)((DateTime.Now - initTime).TotalMilliseconds);
* var state = GetPerfState(ptype);
* state.Add(msec);
*
* msec = (int)((DateTime.Now - initTime2).TotalMilliseconds);
* var state2 = GetPerfState(ptype + 1000);
* state2.Add(msec);
*
* Log.Debug("service " + ptype + " min " + state.Min + "/" + state2.Min + " max " + state.Max + "/" + state2.Max);*/
}
}
}
catch (Exception ex)
{
Log.Error(ex.ToString());
// disconnect to prevent further pollution of system
TCPHandler.ForceDisconnect(data);
}
reader.Close();
}
private static void CreateIW5ServerKey(object stateo)
{
var state = (IW5ServerAuthstate)stateo;
// obtain key auth
try
{
Log.Debug("got a request for a new IW5 dedi key; seems fun to me");
// actually the advanced RSA stuff should be used but that might be incompatible with the .NET implementation of RSA
var passGen = new PasswordGenerator();
passGen.Maximum = 20;
passGen.Minimum = 20;
var key = passGen.Generate();
key = string.Format("X{0}-{1}-{2}-{3}-{4}", key.Substring(1, 3), key.Substring(4, 4), key.Substring(8, 4), key.Substring(12, 4), key.Substring(16, 4));
var thash = new TigerHash();
var hash = thash.ComputeHash(Encoding.ASCII.GetBytes(key));
var keyHash = BitConverter.ToInt64(hash, 0);
var keyEntry = new ServerKey();
keyEntry.key = key;
keyEntry.keyHash = keyHash;
keyEntry.unkInt = new Random().Next();
Database.AServerKeys.Save(keyEntry);
var keyStuff = new byte[86];
Array.Copy(Encoding.ASCII.GetBytes(key), keyStuff, key.Length);
var obfuscationKey = "43FCB2ACF2D72593DD7CD1C69E0F03C07229F4C83166F7B05BA0C5FE3AA3A2D93EK2495783KDKN92939DK";
var i = 0;
foreach (var character in obfuscationKey)
{
keyStuff[i] ^= (byte)character;
i++;
}
// generate iv
var ivBase = BitConverter.ToUInt32(DWCrypto.GenerateRandom(4), 0);
var iv = DWCrypto.CalculateInitialVector(ivBase);
// blah
var globalKey = DWCrypto.GenerateRandom(24);
var gameTicket = DWTickets.BuildGameTicket(globalKey, state.GameID, "", (byte)0); // 4: official
var lsgTicket = DWTickets.BuildLSGTicket(globalKey, (ulong)keyHash, 1, "");
var encryptedGameTicket = DWCrypto.Encrypt(iv, hash, gameTicket);
var reply = state.Packet.MakeReply(25, true);
reply.BitBuffer.UseDataTypes = false;
reply.BitBuffer.WriteBoolean(false);
reply.BitBuffer.WriteUInt32(700);
reply.BitBuffer.WriteUInt32(ivBase);
reply.BitBuffer.WriteBytes(encryptedGameTicket);
reply.BitBuffer.WriteBytes(lsgTicket);
reply.BitBuffer.WriteBytes(keyStuff);
reply.BitBuffer.WriteInt32(keyEntry.unkInt);
reply.Send(false);
}
catch (Exception e)
{
Log.Debug("Exception: " + e.ToString());
}
}
