private bool DownloadFile(string productKey, string lockdownFile, string lockdownResource)
        {
            BnFtpVersion1Request req = new BnFtpVersion1Request(productKey, lockdownFile, null);

            req.Server        = "useast.battle.net";
            req.LocalFileName = Server.MapPath(string.Format("~/Content/Lockdown/{0}", lockdownFile));
            req.ExecuteRequest();

            using (MpqArchive arch = MpqServices.OpenArchive(req.LocalFileName))
            {
                string dllName = lockdownFile.Replace(".mpq", ".dll");
                if (arch.ContainsFile(dllName))
                {
                    arch.SaveToPath(Path.GetFileName(dllName), Server.MapPath("~/Content/Lockdown"), false);
                    //arch.SaveToPath(Server.MapPath("~/Content/Lockdown"), lockdownResource, false);
                    return(true);
                }
                else
                {
                    return(false);
                }
            }
        }
        private async void HandleAuthInfo(BncsReader dr)
        {
            try
            {
                //DataReader dr = new DataReader(data.Data);
                //if (m_pingPck != null)
                //{
                //    Send(m_pingPck);
                //    m_pingPck = null;
                //}
                _received0x50 = true;

                _loginType          = dr.ReadUInt32();
                _srvToken           = dr.ReadInt32();
                _udpVal             = dr.ReadUInt32();
                _mpqFileTime        = dr.ReadInt64();
                _versioningFilename = dr.ReadCString();
                _usingLockdown      = _versioningFilename.StartsWith("LOCKDOWN", StringComparison.OrdinalIgnoreCase);

                int    crResult = -1, exeVer = -1;
                string exeInfo = null;

                if (!_usingLockdown)
                {
                    _valString = dr.ReadCString();
                    int mpqNum = CheckRevision.ExtractMPQNumber(_versioningFilename);
                    crResult = CheckRevision.DoCheckRevision(_valString, new Stream[] { File.OpenRead(_settings.GameExe), File.OpenRead(_settings.GameFile2), File.OpenRead(_settings.GameFile3) }, mpqNum);
                    exeVer   = CheckRevision.GetExeInfo(_settings.GameExe, out exeInfo);
                }
                else
                {
                    _ldValStr = dr.ReadNullTerminatedByteArray();
                    string dllName = _versioningFilename.Replace(".mpq", ".dll");

                    BnFtpVersion1Request req = new BnFtpVersion1Request(_settings.Client, _versioningFilename, null);
                    req.Gateway       = _settings.Gateway;
                    req.LocalFileName = Path.Combine(Path.GetTempPath(), _versioningFilename);
                    await req.ExecuteRequest();

                    string ldPath = null;
                    using (MpqArchive arch = MpqServices.OpenArchive(req.LocalFileName))
                    {
                        if (arch.ContainsFile(dllName))
                        {
                            ldPath = Path.Combine(Path.GetTempPath(), dllName);
                            arch.SaveToPath(dllName, Path.GetTempPath(), false);
                        }
                    }

                    _ldDigest = CheckRevision.DoLockdownCheckRevision(_ldValStr, new string[] { _settings.GameExe, _settings.GameFile2, _settings.GameFile3 },
                                                                      ldPath, _settings.ImageFile, ref exeVer, ref crResult);
                }

                string prodCode = _settings.Client.ProductCode;

                if (prodCode == "WAR3" || prodCode == "W3XP")
                {
                    _w3srv = dr.ReadByteArray(128);

                    if (!NLS.ValidateServerSignature(_w3srv, _connection.RemoteEP.Address.GetAddressBytes()))
                    {
                        //OnError(new ErrorEventArgs(ErrorType.Warcraft3ServerValidationFailure, Strings.War3ServerValidationFailed, false));
                        //Close();
                        //return;
                    }
                }

                //    BattleNetClientResources.IncomingBufferPool.FreeBuffer(data.Data);

                CdKey key1 = _settings.CdKey1, key2 = _settings.CdKey2;
                _clientToken = new Random().Next();

                byte[] key1Hash = key1.GetHash(_clientToken, _srvToken);
                if (WardenHandler != null)
                {
                    try
                    {
                        if (!WardenHandler.InitWarden(BitConverter.ToInt32(key1Hash, 0)))
                        {
                            WardenHandler.UninitWarden();
                            //OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, "The Warden module failed to initialize.  You will not be immediately disconnected; however, you may be disconnected after a short period of time.", false));
                            WardenHandler = null;
                        }
                    }
                    catch (Win32Exception we)
                    {
                        //OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, "The Warden module failed to initialize.  You will not be immediately disconnected; however, you may be disconnected after a short period of time.", false));
                        //OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, string.Format(CultureInfo.CurrentCulture, "Additional information: {0}", we.Message), false));
                        WardenHandler.UninitWarden();
                        WardenHandler = null;
                    }
                }

                BncsPacket pck0x51 = new BncsPacket(BncsPacketId.AuthCheck, _connection.NetworkBuffers.Acquire());
                pck0x51.InsertInt32(_clientToken);
                pck0x51.InsertInt32(exeVer);
                pck0x51.InsertInt32(crResult);
                if (prodCode == "D2XP" || prodCode == "W3XP")
                {
                    pck0x51.InsertInt32(2);
                }
                else
                {
                    pck0x51.InsertInt32(1);
                }
                pck0x51.InsertBoolean(false);
                pck0x51.InsertInt32(key1.Key.Length);
                pck0x51.InsertInt32(key1.Product);
                pck0x51.InsertInt32(key1.Value1);
                pck0x51.InsertInt32(0);
                pck0x51.InsertByteArray(key1Hash);
                if (key2 != null)
                {
                    pck0x51.InsertInt32(key2.Key.Length);
                    pck0x51.InsertInt32(key2.Product);
                    pck0x51.InsertInt32(key2.Value1);
                    pck0x51.InsertInt32(0);
                    pck0x51.InsertByteArray(key2.GetHash(_clientToken, _srvToken));
                }

                if (_usingLockdown)
                {
                    pck0x51.InsertByteArray(_ldDigest);
                    pck0x51.InsertByte(0);
                }
                else
                {
                    pck0x51.InsertCString(exeInfo);
                }

                pck0x51.InsertCString(_settings.CdKeyOwner);

                await pck0x51.SendAsync(_connection);
            }
            catch (Exception ex)
            {
                //OnError(new ErrorEventArgs(ErrorType.General, "There was an error while initializing your client.  Refer to the exception message for more information.\n" + ex.ToString(), true));
                Disconnect();

                Console.WriteLine(ex.ToString());
            }
        }
        private void HandleAuthInfo(ParseData data)
        {
            try
            {
                DataReader dr = new DataReader(data.Data);
                if (m_pingPck != null)
                {
                    Send(m_pingPck);
                    m_pingPck = null;
                }
                m_received0x50 = true;

                m_loginType          = dr.ReadUInt32();
                m_srvToken           = dr.ReadUInt32();
                m_udpVal             = dr.ReadUInt32();
                m_mpqFiletime        = dr.ReadInt64();
                m_versioningFilename = dr.ReadCString();
                m_usingLockdown      = m_versioningFilename.StartsWith("LOCKDOWN", StringComparison.OrdinalIgnoreCase);

                int    crResult = -1, exeVer = -1;
                string exeInfo = null;

                if (!m_usingLockdown)
                {
                    m_valString = dr.ReadCString();
                    int mpqNum = CheckRevision.ExtractMPQNumber(m_versioningFilename);
                    crResult = CheckRevision.DoCheckRevision(m_valString, new string[] { m_settings.GameExe, m_settings.GameFile2, m_settings.GameFile3 }, mpqNum);
                    exeVer   = CheckRevision.GetExeInfo(m_settings.GameExe, out exeInfo);
                }
                else
                {
                    m_ldValStr = dr.ReadNullTerminatedByteArray();
                    string dllName = m_versioningFilename.Replace(".mpq", ".dll");

                    BnFtpVersion1Request req = new BnFtpVersion1Request(m_settings.Client, m_versioningFilename, null);
                    req.Server        = m_settings.Gateway.ServerHost;
                    req.LocalFileName = Path.Combine(Path.GetTempPath(), m_versioningFilename);
                    req.ExecuteRequest();

                    string ldPath = null;
                    using (MpqArchive arch = MpqServices.OpenArchive(req.LocalFileName))
                    {
                        if (arch.ContainsFile(dllName))
                        {
                            ldPath = Path.Combine(Path.GetTempPath(), dllName);
                            arch.SaveToPath(dllName, Path.GetTempPath(), false);
                        }
                    }

                    m_ldDigest = CheckRevision.DoLockdownCheckRevision(m_ldValStr, new string[] { m_settings.GameExe, m_settings.GameFile2, m_settings.GameFile3 },
                                                                       ldPath, m_settings.ImageFile, ref exeVer, ref crResult);
                }

                m_prodCode = m_settings.Client;

                if (m_prodCode == "WAR3" ||
                    m_prodCode == "W3XP")
                {
                    m_w3srv = dr.ReadByteArray(128);

                    if (!NLS.ValidateServerSignature(m_w3srv, RemoteEP.Address.GetAddressBytes()))
                    {
                        OnError(new ErrorEventArgs(ErrorType.Warcraft3ServerValidationFailure, Strings.War3ServerValidationFailed, false));
                        //Close();
                        //return;
                    }
                }

                BattleNetClientResources.IncomingBufferPool.FreeBuffer(data.Data);

                CdKey key1, key2 = null;
                key1 = new CdKey(m_settings.CdKey1);
                if (m_prodCode == "D2XP" || m_prodCode == "W3XP")
                {
                    key2 = new CdKey(m_settings.CdKey2);
                }

                m_clientToken = unchecked ((uint)new Random().Next());

                byte[] key1Hash = key1.GetHash(m_clientToken, m_srvToken);
                if (m_warden != null)
                {
                    try
                    {
                        if (!m_warden.InitWarden(BitConverter.ToInt32(key1Hash, 0)))
                        {
                            m_warden.UninitWarden();
                            OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, "The Warden module failed to initialize.  You will not be immediately disconnected; however, you may be disconnected after a short period of time.", false));
                            m_warden = null;
                        }
                    }
                    catch (Win32Exception we)
                    {
                        OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, "The Warden module failed to initialize.  You will not be immediately disconnected; however, you may be disconnected after a short period of time.", false));
                        OnError(new ErrorEventArgs(ErrorType.WardenModuleFailure, string.Format(CultureInfo.CurrentCulture, "Additional information: {0}", we.Message), false));
                        m_warden.UninitWarden();
                        m_warden = null;
                    }
                }

                BncsPacket pck0x51 = new BncsPacket((byte)BncsPacketId.AuthCheck);
                pck0x51.Insert(m_clientToken);
                pck0x51.Insert(exeVer);
                pck0x51.Insert(crResult);
                if (m_prodCode == "D2XP" || m_prodCode == "W3XP")
                {
                    pck0x51.Insert(2);
                }
                else
                {
                    pck0x51.Insert(1);
                }
                pck0x51.Insert(false);
                pck0x51.Insert(key1.Key.Length);
                pck0x51.Insert(key1.Product);
                pck0x51.Insert(key1.Value1);
                pck0x51.Insert(0);
                pck0x51.Insert(key1Hash);
                if (key2 != null)
                {
                    pck0x51.Insert(key2.Key.Length);
                    pck0x51.Insert(key2.Product);
                    pck0x51.Insert(key2.Value1);
                    pck0x51.Insert(0);
                    pck0x51.Insert(key2.GetHash(m_clientToken, m_srvToken));
                }

                if (m_usingLockdown)
                {
                    pck0x51.InsertByteArray(m_ldDigest);
                    pck0x51.InsertByte(0);
                }
                else
                {
                    pck0x51.InsertCString(exeInfo);
                }

                pck0x51.InsertCString(m_settings.CdKeyOwner);

                Send(pck0x51);
            }
            catch (Exception ex)
            {
                OnError(new ErrorEventArgs(ErrorType.General, "There was an error while initializing your client.  Refer to the exception message for more information.\n" + ex.ToString(), true));
                Close();
            }
        }