private async Task HandleAuthSession(WorldPacket wp)
{
_authsession = new AuthSession();
_authsession.build = wp.ReadUInt32();
_authsession.loginServerId = wp.ReadUInt32();
_authsession.account = wp.ReadString();
_authsession.loginServerType = wp.ReadUInt32();
_authsession.localChallenge = wp.ReadBytes(4, true);
_authsession.regionId = wp.ReadUInt32();
_authsession.battlegroupId = wp.ReadUInt32();
_authsession.realmId = wp.ReadUInt32();
_authsession.dosResponse = wp.ReadUInt64();
_authsession.digest = wp.ReadBytes(20);
//there's 4 bytes in here that i should probably read....
_authsession.addonInfo = wp.ReadBytes(wp.Length - wp._rpos);
//_authsession.unk0 = await _reader.ReadBytesAsync(len);
_info = Program.authDatabase.Accounts.Single(a => a.username == _authsession.account);
var sessionKey = MimicUtils.HexStringToByteArray(_info.sessionkey, 40);
Debug.WriteLine(_info.sessionkey);
_ac = new AuthCrypt(sessionKey);
// Debug.WriteLine(_authsession);
_session = new WorldSession(this, _info);
_session.ReadAddonsInfo(_authsession.addonInfo);
SHA1 sh = SHA1.Create();
sh.Initialize();
byte[] username = Encoding.UTF8.GetBytes(_authsession.account);
sh.TransformBlock(username, 0, username.Length, username, 0);
byte[] pad = new byte[4];
sh.TransformBlock(pad, 0, pad.Length, pad, 0);
byte[] localChal = _authsession.localChallenge;
sh.TransformBlock(localChal, 0, localChal.Length, localChal, 0);
sh.TransformBlock(_mseed, 0, _mseed.Length, _mseed, 0);
sh.TransformBlock(sessionKey, 0, sessionKey.Length, sessionKey, 0);
byte[] zer = new byte[0];
sh.TransformFinalBlock(zer, 0, 0);
byte[] d = sh.Hash;
WorldPacket pck = new WorldPacket(WorldCommand.SMSG_AUTH_RESPONSE, this);
if (!d.SequenceEqual(_authsession.digest)) //Didn't auth properly
{
Debug.WriteLine(BitConverter.ToString(d).Replace("-", ""));
Debug.WriteLine(BitConverter.ToString(_authsession.digest).Replace("-", ""));
Debug.WriteLine("Didn't auth properly");
pck.append((byte)14);
Close();
return;
}
else
{
Debug.WriteLine("Client <" + _authsession.account + "> authed on build " + _authsession.build + " (0x1ED)");
pck.append((byte)12);
pck.append(0);
pck.append((byte)0);
pck.append(0);
pck.append((byte)2);
_status = AuthStatus.AUTHED;
}
Program.world.AddSession(_session);
byte[] pdata = pck.result();
_writer.Write(pdata);
}
private async Task HandleLogonChallengeAsync()
{
var error = await _reader.ReadUInt8Async(); // always 3
var size = await _reader.ReadUInt16Async();
if (_client.Available < size)
{
await CloseAsync(AuthStatus.ProtocolError);
return;
}
var gameName = await _reader.ReadUInt32Async();
if (gameName != GameName)
{
await CloseAsync(AuthStatus.ProtocolError);
return;
}
var versionMajor = await _reader.ReadUInt8Async();
var versionMinor = await _reader.ReadUInt8Async();
var versionPatch = await _reader.ReadUInt8Async();
_buildNumber = await _reader.ReadUInt16Async();
var platform = (Architecture)await _reader.ReadUInt32Async();
var os = (OperatingSystem)await _reader.ReadUInt32Async();
var locale = (Locale)await _reader.ReadUInt32Async();
var timezoneBias = await _reader.ReadUInt32Async();
var ipAddress = new IPAddress(await _reader.ReadUInt32Async());
var realAddress = (_client.Client.RemoteEndPoint as IPEndPoint).Address;
var accountNameLength = await _reader.ReadUInt8Async();
var accountName = await _reader.ReadStringAsync(accountNameLength);
accountName = accountName.ToUpperInvariant();
_info = Program.authDatabase.Accounts.Single(a => a.username == accountName);
_info.last_ip = realAddress.ToString();
//_info.last_login = new DateTime().ToUniversalTime().ToString();
_info.os = os.ToString();
//_info.locale = (int)locale; <not the same>
byte[] passhash = MimicUtils.HexStringToByteArray(_info.pass_hash);
BigInteger s, v;
if (_info.s != "" && _info.v != "")
{
s = SrpHandler.BigIntFromHexString(_info.s);
v = SrpHandler.BigIntFromHexString(_info.v);
}
else
{
s = BigInteger.Zero;
v = BigInteger.Zero;
}
_authentication.ComputePrivateFields(accountName, passhash, s, v);
List <byte> data = new List <byte>();
data.Add((byte)_currentCommand);
data.Add(0);
data.Add((byte)AuthStatus.Success);
data.AddRange(_authentication.PublicKey); // B
data.Add((byte)_authentication.Generator.Length);
data.AddRange(_authentication.Generator); // g
data.Add((byte)_authentication.SafePrime.Length);
data.AddRange(_authentication.SafePrime); // N
data.AddRange(_authentication.Salt); // s
data.AddRange(Enumerable.Repeat((byte)0, 16));
data.Add(0); // security flags;
await _clientStream.WriteAsync(data.ToArray(), 0, data.Count);
}
