Example #1
0
        /// <summary>
        /// Handle a LoginRequest package
        /// </summary>
        /// <param name="loginRequest">LoginRequest to handle</param>
        /// <param name="clientAddress">address of the sender of the package</param>
        /// <returns>the feedback transmitted</returns>
        private static void HandlePackage(LoginRequest loginRequest, string clientAddress)
        {
            Feedback feedback = null;

            if (!SDBController.TryVerifyUser(loginRequest.Email, loginRequest.PasswordHash, out bool result))
            {
                feedback = new Feedback(FeedbackCode.InternalServerError);
            }
            else
            {
                if (result)
                {
                    if (SDBController.TryUpdateClientLastIPAddress(loginRequest.Email, clientAddress))
                    {
                        feedback = new Feedback(FeedbackCode.LoginAccepted);
                    }
                    else
                    {
                        feedback = new Feedback(FeedbackCode.InternalServerError);
                    }
                }
                else
                {
                    feedback = new Feedback(FeedbackCode.LoginDenied);
                }
            }


            if (feedback.FeedbackCode == FeedbackCode.LoginAccepted)
            {
                if (!SDBController.TryGetClientList(out List <User> userList))
                {
                    feedback = new Feedback(FeedbackCode.InternalServerError);
                }
                else
                {
                    if (!SDBController.TryGetMessageList(loginRequest.Email, out List <MessagePackage> list))
                    {
                        feedback = new Feedback(FeedbackCode.InternalServerError);
                    }
                    else
                    {
                        UserList userListPackage = new UserList(userList);
                        SConnectionController.SendPackage(userListPackage, clientAddress);

                        MessageList messageList = new MessageList(list);
                        SConnectionController.SendPackage(messageList, clientAddress);

                        SDBController.TryUpdateSendTime(loginRequest.Email);

                        return;
                    }
                }
            }

            SConnectionController.SendPackage(feedback, clientAddress);
        }
Example #2
0
        private static void HandlePackage(SendTextMessage sendTextMessage, string clientAddress)
        {
            DateTime?sendTime;

            if (!SDBController.ConnectionAvailable())
            {
                SConnectionController.SendPackage(new Feedback(FeedbackCode.MessageSendFailed), clientAddress);
                return;
            }
            if (!SDBController.TryGetUser(clientAddress, out User user))
            {
                SConnectionController.SendPackage(new Feedback(FeedbackCode.InvalidSession), clientAddress);
                return;
            }
            if (!SDBController.TryGetIPAddressByEmail(sendTextMessage.EMail, out string ipAddress))
            {
                sendTime = null;
            }
            else
            {
                if (string.IsNullOrEmpty(ipAddress))
                {
                    sendTime = null;
                }
                else
                {
                    if (SConnectionController.SendPackage(new ReceiveTextMessage(sendTextMessage.EMail, sendTextMessage.Text), ipAddress))
                    {
                        sendTime = DateTime.Now;
                    }
                    else
                    {
                        sendTime = null;
                    }
                }
            }
            if (SDBController.TryAddMessage(user.Email, sendTextMessage.EMail, sendTextMessage.Text, sendTime))
            {
                SConnectionController.SendPackage(new Feedback(FeedbackCode.MessageSendSuccess), clientAddress);
            }
            else
            {
                SConnectionController.SendPackage(new Feedback(FeedbackCode.MessageSendFailed), clientAddress);
            }
        }
Example #3
0
        static void Main(string[] args)
        {
            WriteLine("Willkommen bei REEChat Server!");
            WriteLine("Überprüfung der Datenbankverbindung...");

            //checks whether a database connection can be created
            while (!SDBController.ConnectionAvailable())
            {
                WriteLine("Datenbankverbindung fehlgeschlagen.\nErneuter Versuch in 10 Sekunden");
                Thread.Sleep(10 * 1000);
            }
            WriteLine("Datenbankverbindung erfolgreich!");

            WriteLine("Server wird initialisiert...");
            SConnectionController.Init();

            WriteLine("Server wird gestartet...");

            //Trying to start the listener
            try
            {
                SConnectionController.Listener.Start(10);
            }
            catch (SocketException)
            {
                WriteLine("Server kann nicht gestartet werden. Der Port [" + ConnectionConfig.serverPort + "] wird bereits verwendet.");
                WriteLine("Mögliche Ursache dafür ist, dass bereits ein REEChat Server auf diesem Gerät läuft!");
                WriteLine("Beliebige Taste drücken zum Schließen...");
                Console.ReadKey();
                return;
            }

            SConnectionController.ThreadListener.Start();

            WriteLine("Server erfolgreich gestartet!\n");

            while (true)
            {
            }
        }
Example #4
0
        /// <summary>
        /// Handle a RegistrationRequest
        /// </summary>
        /// <param name="request">RegistrationRequest to handle</param>
        /// <param name="clientAddress">address of the sender of the package</param>
        /// <returns>the feedback transmitted</returns>
        private static void HandlePackage(RegistrationRequest request, string clientAddress)
        {
            Feedback feedback = null;

            if (!CheckRegistrationRequest(request))
            {
                feedback = new Feedback(FeedbackCode.RegistrationDenied);
            }
            else
            {
                switch (SDBController.TryAddClient(request))
                {
                case 0:
                    feedback = new Feedback(FeedbackCode.RegistrationAccepted);

                    SDBController.TryGetAllIpAddresses(out List <string> addressList);
                    SDBController.TryGetClientList(out List <User> userList);

                    foreach (string address in addressList)
                    {
                        if (address != clientAddress)
                        {
                            SConnectionController.SendPackage(new UserList(userList), address);
                        }
                    }
                    break;

                case 1:
                    feedback = new Feedback(FeedbackCode.InternalServerError);
                    break;

                case 2:
                    feedback = new Feedback(FeedbackCode.RegistrationDeniedEmailAlreadyUsed);
                    break;
                }
            }

            SConnectionController.SendPackage(feedback, clientAddress);
        }