public async Task OnLogonChallenge(AuthLogonChallenge challenge)
{
Account = GrainFactory.GetGrain <IAccount>(challenge.account);
if (!(await Account.IsValid()))
{
await SendAuthError(AuthError.NoAccount);
return;
}
string password = await Account.GetPassword();
Shared.BigInteger pass = new Shared.BigInteger(password, 16);
//test
string passwordPlain = await Account.GetPasswordPlain();
string SRPHash = challenge.account.ToUpper() + ":" + passwordPlain.ToUpper();
var SRPHashBytes = Encoding.UTF8.GetBytes(SRPHash);
var SRPCreds = BigInt.Hash(SRPHashBytes); //The bytes were g
BigInteger x = BigInt.Hash(s, SRPCreds);
v = g.ModPow(x, N);
b = new Shared.BigInteger(new Random(), 160);
Shared.BigInteger gmod = g.ModPow(b, N);
if (gmod < 0)
{
gmod += N;
}
B = ((v * 3) + gmod) % N;
if (B < 0)
{
B += N;
}
Shared.BigInteger unk = new Shared.BigInteger(new Random(), 128);
//I'm sure this is used for matrix proofing (2 factor auth)
PacketOut rtn = new PacketOut(AuthOp.AUTH_LOGON_CHALLENGE);
rtn.Write((byte)AuthError.Success);
rtn.Write((byte)0); //unknown
rtn.WriteBigInt(B, 32);
rtn.WriteBigIntLength(g, 1);
rtn.WriteBigIntLength(N, 32);
rtn.WriteBigInt(s, 32);
rtn.WriteBigInt(unk, 16);
rtn.Write((byte)0); //security flag
await SendPacket(rtn); //test
}
public static PacketProcessResult HandleLogonAuthChallenge(PacketProcessor p)
{
if (p.CurrentPacket.Length < 4)
{
p.DataNeeded = 4; //1 opcode, 1 version, 2 data_size
return(PacketProcessResult.RequiresData);
}
byte proto_version = p.CurrentPacket.ReadByte();
UInt16 data_size = p.CurrentPacket.ReadUInt16();
if (p.CurrentPacket.Length < 4 + data_size)
{
p.DataNeeded = 4 + data_size; //1 opcode, 1 version, 2 data_size, data_size data
return(PacketProcessResult.RequiresData);
}
AuthLogonChallenge challenge = new AuthLogonChallenge();
challenge.client = p.CurrentPacket.ReadFourCC();
challenge.client_major = p.CurrentPacket.ReadByte();
challenge.client_minor = p.CurrentPacket.ReadByte();
challenge.client_revision = p.CurrentPacket.ReadByte();
challenge.client_build = p.CurrentPacket.ReadUInt16();
challenge.processor = p.CurrentPacket.ReadFourCC();
challenge.os = p.CurrentPacket.ReadFourCC();
challenge.locale = p.CurrentPacket.ReadFourCC();
challenge.category = p.CurrentPacket.ReadInt32();
challenge.ipaddr = new IPAddress(p.CurrentPacket.ReadBytes(4));
challenge.account = p.CurrentPacket.ReadString();
if (p.ClientConnection != null && p.ClientConnection.CurrentSession != null)
{
p.ClientConnection.CurrentSession.OnLogonChallenge(challenge);
}
return(PacketProcessResult.Processed);
}
