public static void AuthSessionRequest(RealmClient client, RealmPacketIn packet) { packet.SkipBytes(8); string accName = packet.ReadString(); uint clientSeed = packet.ReadUInt32(); BigInteger clientDigest = packet.ReadBigInteger(20); AuthenticationInfo authInfo; SecureRemotePassword srp; AuthenticationErrorCodes errorCode = AuthenticationErrorCodes.AuthFailed; client.Account = new Account(client, accName); if (!client.Account.Initialize()) { errorCode = AuthenticationErrorCodes.UnknownAccount; goto sendErrorReply; } if (client.Server.RequestAuthenticationInfo(accName, out authInfo)) { srp = new SecureRemotePassword(accName, authInfo.Verifier, new BigInteger(authInfo.Salt, 32)); client.Account.SessionKey = authInfo.SessionKey; client.SystemInfo = SystemInformation.Deserialize(authInfo.SystemInformation); } else { goto sendErrorReply; } BigInteger clientVerifier = srp.Hash(srp.Username, new byte[4], clientSeed, client.Server.AuthSeed, client.Account.SessionKey); client.IsEncrypted = true; // all packets from here on are encrypted, including the AuthSessionReplys if (clientVerifier == clientDigest) { AddonHandler.ReadAddOns(client, packet); client.Server.LoginAccount(client.Account.Username); if (AuthQueue.QueuedClients > 0 || client.Server.NumberOfClients > client.Server.Config.ServerCapacity) { AuthQueue.EnqueueClient(client); return; } SendAuthSessionSuccess(client); return; } else { goto sendErrorReply; } sendErrorReply: SendAuthSessionErrorReply(client, errorCode); client.Disconnect(); }