Possible encrypt fix

Added Length options to protocol.

ErgometerLibrary/AESEncrypt.cs

@@ -0,0 +1,162 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ErgometerLibrary
+{
+    static class AESEncrypt
+    {
+        // Change these keys
+        private static byte[] Key = { 47, 20, 192, 222, 214, 221, 193, 151, 182, 182, 20, 246, 80, 235, 182, 216, 116, 141, 188, 191, 13, 159, 1, 137, 151, 150, 29, 171, 240, 21, 251, 252  };
+        private static byte[] Vector = { 147, 16, 78, 223, 97, 189, 43, 197, 244, 102, 242, 123, 184, 101, 75, 203 };
+
+
+        private static ICryptoTransform EncryptorTransform, DecryptorTransform;
+        private static System.Text.UTF8Encoding UTFEncoder;
+
+        static AESEncrypt()
+        {
+            //This is our encryption method
+            RijndaelManaged rm = new RijndaelManaged();
+
+            //Create an encryptor and a decryptor using our encryption method, key, and vector.
+            EncryptorTransform = rm.CreateEncryptor(Key, Vector);
+            DecryptorTransform = rm.CreateDecryptor(Key, Vector);
+
+            //Used to translate bytes to text and vice versa
+            UTFEncoder = new System.Text.UTF8Encoding();
+        }
+
+        /// -------------- Two Utility Methods (not used but may be useful) -----------
+        /// Generates an encryption key.
+        static public byte[] GenerateEncryptionKey()
+        {
+            //Generate a Key.
+            RijndaelManaged rm = new RijndaelManaged();
+            rm.GenerateKey();
+            return rm.Key;
+        }
+
+        /// Generates a unique encryption vector
+        static public byte[] GenerateEncryptionVector()
+        {
+            //Generate a Vector
+            RijndaelManaged rm = new RijndaelManaged();
+            rm.GenerateIV();
+            return rm.IV;
+        }
+
+
+        /// ----------- The commonly used methods ------------------------------    
+        /// Encrypt some text and return a string suitable for passing in a URL.
+        public static string EncryptToString(string TextValue)
+        {
+            return ByteArrToString(Encrypt(TextValue));
+        }
+
+        /// Encrypt some text and return an encrypted byte array.
+        public static byte[] Encrypt(string TextValue)
+        {
+            //Translates our text value into a byte array.
+            Byte[] bytes = UTFEncoder.GetBytes(TextValue);
+
+            //Used to stream the data in and out of the CryptoStream.
+            MemoryStream memoryStream = new MemoryStream();
+
+            /*
+             * We will have to write the unencrypted bytes to the stream,
+             * then read the encrypted result back from the stream.
+             */
+            #region Write the decrypted value to the encryption stream
+            CryptoStream cs = new CryptoStream(memoryStream, EncryptorTransform, CryptoStreamMode.Write);
+            cs.Write(bytes, 0, bytes.Length);
+            cs.FlushFinalBlock();
+            #endregion
+
+            #region Read encrypted value back out of the stream
+            memoryStream.Position = 0;
+            byte[] encrypted = new byte[memoryStream.Length];
+            memoryStream.Read(encrypted, 0, encrypted.Length);
+            #endregion
+
+            //Clean up.
+            cs.Close();
+            memoryStream.Close();
+
+            return encrypted;
+        }
+
+        /// The other side: Decryption methods
+        public static string DecryptString(string EncryptedString)
+        {
+            return Decrypt(StrToByteArray(EncryptedString));
+        }
+
+        /// Decryption when working with byte arrays.    
+        public static string Decrypt(byte[] EncryptedValue)
+        {
+            #region Write the encrypted value to the decryption stream
+            MemoryStream encryptedStream = new MemoryStream();
+            CryptoStream decryptStream = new CryptoStream(encryptedStream, DecryptorTransform, CryptoStreamMode.Write);
+            decryptStream.Write(EncryptedValue, 0, EncryptedValue.Length);
+            decryptStream.FlushFinalBlock();
+            #endregion
+
+            #region Read the decrypted value from the stream.
+            encryptedStream.Position = 0;
+            Byte[] decryptedBytes = new Byte[encryptedStream.Length];
+            encryptedStream.Read(decryptedBytes, 0, decryptedBytes.Length);
+            encryptedStream.Close();
+            #endregion
+            return UTFEncoder.GetString(decryptedBytes);
+        }
+
+        /// Convert a string to a byte array.  NOTE: Normally we'd create a Byte Array from a string using an ASCII encoding (like so).
+        //      System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
+        //      return encoding.GetBytes(str);
+        // However, this results in character values that cannot be passed in a URL.  So, instead, I just
+        // lay out all of the byte values in a long string of numbers (three per - must pad numbers less than 100).
+        public static byte[] StrToByteArray(string str)
+        {
+            if (str.Length == 0)
+                throw new Exception("Invalid string value in StrToByteArray");
+
+            byte val;
+            byte[] byteArr = new byte[str.Length / 3];
+            int i = 0;
+            int j = 0;
+            do
+            {
+                val = byte.Parse(str.Substring(i, 3));
+                byteArr[j++] = val;
+                i += 3;
+            }
+            while (i < str.Length);
+            return byteArr;
+        }
+
+        // Same comment as above.  Normally the conversion would use an ASCII encoding in the other direction:
+        //      System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
+        //      return enc.GetString(byteArr);    
+        public static string ByteArrToString(byte[] byteArr)
+        {
+            byte val;
+            string tempStr = "";
+            for (int i = 0; i <= byteArr.GetUpperBound(0); i++)
+            {
+                val = byteArr[i];
+                if (val < (byte)10)
+                    tempStr += "00" + val.ToString();
+                else if (val < (byte)100)
+                    tempStr += "0" + val.ToString();
+                else
+                    tempStr += val.ToString();
+            }
+            return tempStr;
+        }
+    }
+}

ErgometerLibrary/Chat/ChatItem.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ErgometerLibrary.Chat
+{
+    public class ChatItem : Panel
+    {
+        private Label messageLabel, timeLabel;
+
+        public ChatItem(ChatMessage chat) : base()
+        {
+            this.messageLabel = new Label();
+            this.timeLabel = new Label();
+
+            this.AutoSize = true;
+            this.setAppearance(chat.IsDoctor);
+            this.Controls.Add(this.messageLabel);
+            this.Controls.Add(this.timeLabel);
+            this.MinimumSize = new System.Drawing.Size(150, 60);
+            this.Name = "messageContainer";
+            this.Padding = new System.Windows.Forms.Padding(6);
+
+            //
+            // Message Label
+            // 
+            this.messageLabel.AutoSize = true;
+            this.messageLabel.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.messageLabel.Font = new System.Drawing.Font("Segoe UI Semibold", 11.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.messageLabel.Location = new System.Drawing.Point(6, 6);
+            this.messageLabel.MaximumSize = new System.Drawing.Size(250, 0);
+            this.messageLabel.Size = new System.Drawing.Size(121, 20);
+            this.messageLabel.Text = chat.Message.Replace("\n", "");
+            // 
+            // Time Label
+            // 
+            this.timeLabel.AutoSize = true;
+            this.timeLabel.Dock = System.Windows.Forms.DockStyle.Bottom;
+            this.timeLabel.Font = new System.Drawing.Font("Segoe UI Semilight", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.timeLabel.Location = new System.Drawing.Point(6, 26);
+            this.timeLabel.Margin = new System.Windows.Forms.Padding(6);
+            this.timeLabel.Size = new System.Drawing.Size(32, 13);
+            this.timeLabel.Text = Helper.MillisecondsToTime(chat.TimeStamp);
+        }
+
+        private void setAppearance(bool isDoctor)
+        {
+            if (isDoctor)
+            {
+                this.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(255)))), ((int)(((byte)(255)))));
+                this.Dock = DockStyle.Right;
+            }
+            else
+            {
+                this.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
+                this.Dock = DockStyle.Left;
+            }
+        }
+    }
+}

ErgometerLibrary/ChatMessage.cs

@@ -5,12 +5,14 @@
         public string Message { get; }
         public string Name { get; }
         public double TimeStamp { get; set;}
+        public bool IsDoctor { get; set; }
 
-        public ChatMessage(string name, string message)
+        public ChatMessage(string name, string message, bool isDoctor)
         {
             Name = name;
             Message = message;
             TimeStamp = Helper.Now;
+            IsDoctor = isDoctor;
         }
 
         public override string ToString()

ErgometerLibrary/ComPort.cs

@@ -24,8 +24,14 @@ namespace ErgometerLibrary
             comPort.Parity = Parity.None;
             comPort.StopBits = StopBits.One;
             comPort.BaudRate = 9600;
-
-            comPort.Open();
+            comPort.ReadTimeout = 1500;
+            try {
+                comPort.Open();
+            }
+            catch(Exception e)
+            {
+                return false;
+            }
 
             return comPort.IsOpen;
         }
@@ -56,7 +62,13 @@ namespace ErgometerLibrary
         {
             if (IsOpen())
             {
-                return comPort.ReadLine();
+                try {
+                    return comPort.ReadLine();
+                }
+                catch(TimeoutException e)
+                {
+                    return "err";
+                }
             }
 
             return "";

ErgometerLibrary/ErgometerLibrary.csproj

@@ -36,6 +36,8 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Windows.Forms" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
@@ -44,11 +46,14 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="AESEncrypt.cs" />
     <Compile Include="ChatMessage.cs" />
+    <Compile Include="Chat\ChatItem.cs">
+      <SubType>Component</SubType>
+    </Compile>
     <Compile Include="Helper.cs" />
     <Compile Include="NetCommand.cs" />
     <Compile Include="ComPort.cs" />
-    <Compile Include="FileHandler.cs" />
     <Compile Include="Meting.cs" />
     <Compile Include="NetHelper.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

ErgometerLibrary/FileHandler.cs

@@ -1,82 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-
-namespace ErgometerLibrary
-{
-    public class FileHandler
-    {
-        public static string DataFolder { get; } = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments), "Ergometer");
-
-        public static void CheckDataFolder()
-        {
-            if(! Directory.Exists(DataFolder))
-            {
-                Directory.CreateDirectory(DataFolder);
-            }
-        }
-
-        public static int GenerateSession()
-        {
-            string[] existingSessions = Directory.GetDirectories(DataFolder);
-
-            Random rand = new Random();
-            int sessionID = rand.Next(int.MinValue, int.MaxValue);
-
-
-            while (existingSessions.Contains(sessionID.ToString()))
-            {
-                sessionID = rand.Next(int.MinValue, int.MaxValue);
-            }
-
-            return sessionID;
-        }
-
-        public static void CreateSession(int session, string naam)
-        {
-            Directory.CreateDirectory(GetSessionFolder(session));
-            File.Create(Path.Combine(GetSessionFolder(session), "session.prop"));
-            File.Create(Path.Combine(GetSessionFolder(session), "metingen.ergo"));
-            File.Create(Path.Combine(GetSessionFolder(session), "chat.log"));
-
-            File.WriteAllText(GetSessionFile(session), naam + "\n" + Helper.Now);
-        }
-
-        public static void WriteMetingen(int session, List<Meting> metingen)
-        {
-            string json = Newtonsoft.Json.JsonConvert.SerializeObject(metingen);
-            File.WriteAllText(GetSessionMetingen(session), json);
-            Console.WriteLine("Writing metingen: " + GetSessionMetingen(session));
-        }
-
-        public static void WriteChat(int session, List<ChatMessage> chat)
-        {
-            string write = "";
-            foreach(ChatMessage c in chat)
-            {
-                write += c.ToString() + "\n";
-            }
-
-            File.WriteAllText(GetSessionChat(session), write);
-            Console.WriteLine("Writing chat: " + GetSessionChat(session));
-        }
-
-        private static string GetSessionFolder(int session)
-        {
-            return Path.Combine(DataFolder, session.ToString());
-        }
-        private static string GetSessionFile(int session)
-        {
-            return Path.Combine(DataFolder, session.ToString(), "session.prop");
-        }
-        private static string GetSessionMetingen(int session)
-        {
-            return Path.Combine(DataFolder, session.ToString(), "metingen.ergo");
-        }
-        private static string GetSessionChat(int session)
-        {
-            return Path.Combine(DataFolder, session.ToString(), "chat.log");
-        }
-    }
-}

ErgometerLibrary/Helper.cs

@@ -6,8 +6,27 @@ using System.Threading.Tasks;
 
 namespace ErgometerLibrary
 {
-    class Helper
+    public class Helper
     {
-        public static double Now { get { return (DateTime.Now - DateTime.Parse("1/1/1870 0:0:0")).TotalMilliseconds; } }
+        public static double Now { get { return (DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds; } }
+        
+        public static string MillisecondsToTime(double millis)
+        {
+            DateTime time = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+            string timestr = time.AddMilliseconds(millis) + "";
+            return timestr;
+        }
+
+        public static string Base64Encode(string plainText)
+        {
+            var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
+            return System.Convert.ToBase64String(plainTextBytes);
+        }
+
+        public static string Base64Decode(string base64EncodedData)
+        {
+            var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData);
+            return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);
+        }
     }
 }

ErgometerLibrary/Meting.cs

@@ -68,10 +68,9 @@ namespace ErgometerLibrary
         public static Meting Parse(string input, char delimiter)
         {
             string[] status = input.Split(delimiter);
-            Console.WriteLine(status.Length);
             if (status.Length != 8 && status.Length != 9)
             {
-                return null;
+                throw new FormatException("Error in Meting: Arguments do not match");
             }
             int heartbeat = int.Parse(status[0]);
             int rpm = int.Parse(status[1]);
@@ -88,7 +87,15 @@ namespace ErgometerLibrary
                 timestamp = Helper.Now;
 
             string[] temp = status[6].Split(':');
-            int seconds = (int.Parse(temp[0]) * 60) + (int.Parse(temp[1]));
+            int seconds = 0;
+            if (temp.Length == 2)
+            {
+                seconds = (int.Parse(temp[0]) * 60) + (int.Parse(temp[1]));
+            }
+            else
+            {
+                seconds = int.Parse(status[6]);
+            }
 
             return new Meting(heartbeat, rpm, speed, distance, power, energy, seconds, actualpower,timestamp);
         }

ErgometerLibrary/NetCommand.cs

@@ -3,23 +3,34 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Microsoft.Win32;
 
 namespace ErgometerLibrary
 {
     public class NetCommand
     {
-        public enum CommandType { LOGIN, DATA, CHAT, LOGOUT, SESSION };
-
+        public enum CommandType { LOGIN, DATA, CHAT, LOGOUT, SESSION, VALUESET, USER, RESPONSE, REQUEST, LENGTH, SESSIONDATA, ERROR, BROADCAST }
+        public enum RequestType { USERS, ALLSESSIONS, OLDDATA, SESSIONDATA, CHAT }
+        public enum ResponseType { LOGINOK, LOGINWRONG, ERROR, NOTLOGGEDIN }
+        public enum ValueType { TIME, POWER, ENERGY, DISTANCE }
+        public enum LengthType { USERS, SESSIONS, SESSIONDATA, DATA }
 
         public double Timestamp { get; set; }
         public int Session { get; set; }
         public CommandType Type { get; set; }
+        public ResponseType Response { get; set; }
+        public ValueType Value { get; set; }
+        public RequestType Request { get; set; }
+        public LengthType Length { get; set; }
+        public int SetValue { get; set; }
         public string DisplayName { get; set; }
         public bool IsDoctor { get; set; }
         public string Password { get; set; }
         public string ChatMessage { get; set; }
         public Meting Meting { get; set; }
+        public int LengthValue { get; set; }
 
+        //SESSION
         public NetCommand(int session)
         {
             Type = CommandType.SESSION;
@@ -27,6 +38,44 @@ namespace ErgometerLibrary
             Timestamp = Helper.Now;
         }
 
+        //SESSIONDATA
+        public NetCommand(string name, double timestamp, int session)
+        {
+            Type = CommandType.SESSIONDATA;
+            Session = session;
+            Timestamp = timestamp;
+            DisplayName = name;
+        }
+
+        //RESPONSE
+        public NetCommand(ResponseType response, int session)
+        {
+            Type = CommandType.RESPONSE;
+            Session = session;
+            Timestamp = Helper.Now;
+            Response = response;
+        }
+
+        //Length
+        public NetCommand(LengthType lengthtype, int length, int session)
+        {
+            Type = CommandType.LENGTH;
+            Length = lengthtype;
+            Session = session;
+            Timestamp = Helper.Now;
+            LengthValue = length;
+        }
+
+        //REQUEST
+        public NetCommand(RequestType request, int session)
+        {
+            Type = CommandType.REQUEST;
+            Session = session;
+            Timestamp = Helper.Now;
+            Request = request;
+        }
+
+        //STANDARD
         public NetCommand(CommandType commandtype, int session)
         {
             Type = commandtype;
@@ -34,6 +83,7 @@ namespace ErgometerLibrary
             Timestamp = Helper.Now;
         }
 
+        //METING
         public NetCommand(Meting m, int session)
         {
             Type = CommandType.DATA;
@@ -43,16 +93,47 @@ namespace ErgometerLibrary
             Meting = m;
         }
 
-        public NetCommand(string chat, int session)
+        //CHAT
+        public NetCommand(string chat, bool isDoctor, int session)
         {
             Type = CommandType.CHAT;
             Session = session;
+            IsDoctor = isDoctor;
             Timestamp = Helper.Now;
 
-            ChatMessage = chat;
+            ChatMessage = chat.Replace("\n", "");
         }
 
-        public NetCommand(string name, bool doctor, int session)
+        //BROADCAST
+        public NetCommand(string broadcast, int session)
+        {
+            Type = CommandType.BROADCAST;
+            Session = session;
+            Timestamp = Helper.Now;
+
+            ChatMessage = broadcast.Replace("\n", "");
+        }
+
+        //SETVALUE
+        public NetCommand(ValueType value, int val, int session)
+        {
+            Type = CommandType.VALUESET;
+            Session = session;
+            Value = value;
+            SetValue = val;
+        }
+
+        //USER
+        public NetCommand(string username, string password, int session)
+        {
+            Type = CommandType.USER;
+            Session = session;
+            DisplayName = username;
+            Password = password;
+        }
+
+        //LOGIN
+        public NetCommand(string name, bool doctor, string password, int session)
         {
             Type = CommandType.LOGIN;
             Session = session;
@@ -60,20 +141,30 @@ namespace ErgometerLibrary
 
             DisplayName = name;
             IsDoctor = doctor;
+            Password = password;
         }
 
         public static NetCommand Parse(string command)
         {
             string[] com = command.Split('»');
 
-            int comType = int.Parse(com[0]);
+            int comType = 0;
+            try
+            {
+                comType = int.Parse(com[0]);
+            }
+            catch(Exception e)
+            {
+                return new NetCommand(CommandType.ERROR, 0);
+            }
+
             int session = 0;
             if (com[1].StartsWith("ses"))
                 session = int.Parse(com[1].Substring(3));
             else
-                throw new FormatException("Error in NetCommend: " + com[1] + " is not a valid session.");
+                throw new FormatException("Error in NetCommand: " + com[1] + " is not a valid session.");
 
-            string[] args = new string[9];
+            string[] args = new string[com.Length - 2];
             for (int i = 2; i < com.Length; i++)
             {
                 args[i - 2] = com[i];
@@ -91,11 +182,137 @@ namespace ErgometerLibrary
                     return ParseLogoutRequest(session, args);
                 case 5:
                     return ParseSession(session);
+                case 6:
+                    return ParseResponse(session, args);
+                case 7:
+                    return ParseValue(session, args);
+                case 8:
+                    return ParseUser(session, args);
+                case 9:
+                    return ParseRequest(session, args);
+                case 10:
+                    return ParseLength(session, args);
+                case 11:
+                    return ParseSessionData(session, args);
+                case 12:
+                    return ParseBroadcast(session, args);
                 default:
                     throw new FormatException("Error in NetCommand: " + comType + " is not a valid command type.");
             }
         }
 
+        private static NetCommand ParseBroadcast(int session, string[] args)
+        {
+            if (args.Length != 1)
+                throw new MissingFieldException("Error in NetCommand: Broadcast Message is missing arguments");
+
+            NetCommand temp = new NetCommand(args[0], session);
+
+            return temp;
+        }
+
+        private static NetCommand ParseSessionData(int session, string[] args)
+        {
+            if (args.Length != 2)
+                throw new MissingFieldException("Error in NetCommand: Session Data is missing arguments");
+
+            NetCommand temp = new NetCommand(args[0], double.Parse(args[1]), session);
+
+            return temp;
+        }
+
+        private static NetCommand ParseLength(int session, string[] args)
+        {
+            if (args.Length != 2)
+                throw new MissingFieldException("Error in NetCommand: Length is missing arguments");
+
+            switch (args[0])
+            {
+                case "users":
+                    return new NetCommand(LengthType.USERS, int.Parse(args[1]), session);
+                case "sessiondata":
+                    return new NetCommand(LengthType.SESSIONDATA, int.Parse(args[1]), session);
+                case "sessions":
+                    return new NetCommand(LengthType.SESSIONS, int.Parse(args[1]), session);
+                case "data":
+                    return new NetCommand(LengthType.DATA, int.Parse(args[1]), session);
+                default:
+                    throw new FormatException("Error in NetCommand: Length type not recognised");
+            }
+        }
+
+        private static NetCommand ParseRequest(int session, string[] args)
+        {
+            if (args.Length != 1)
+                throw new MissingFieldException("Error in NetCommand: Request is missing arguments");
+
+            switch (args[0])
+            {
+                case "users":
+                    return new NetCommand(RequestType.USERS, session);
+                case "allsessions":
+                    return new NetCommand(RequestType.ALLSESSIONS, session);
+                case "olddata":
+                    return new NetCommand(RequestType.OLDDATA, session);
+                case "sessiondata":
+                    return new NetCommand(RequestType.SESSIONDATA, session);
+                case "chat":
+                    return new NetCommand(RequestType.CHAT, session);
+                default:
+                    throw new FormatException("Error in NetCommand: Request type not recognised");
+            }
+        }
+
+        private static NetCommand ParseUser(int session, string[] args)
+        {
+            if (args.Length != 2)
+                throw new MissingFieldException("Error in NetCommand: User is missing arguments");
+
+            NetCommand temp = new NetCommand(args[0], Helper.Base64Decode(args[1]), session);
+
+            return temp;
+        }
+
+        private static NetCommand ParseValue(int session, string[] args)
+        {
+            if (args.Length != 2)
+                throw new MissingFieldException("Error in NetCommand: SetValue is missing arguments");
+
+            switch (args[0])
+            {
+                case "time":
+                    return new NetCommand(ValueType.TIME, int.Parse(args[1]), session);
+                case "power":
+                    return new NetCommand(ValueType.POWER, int.Parse(args[1]), session);
+                case "energy":
+                    return new NetCommand(ValueType.ENERGY, int.Parse(args[1]), session);
+                case "distance":
+                    return new NetCommand(ValueType.DISTANCE, int.Parse(args[1]), session);
+                default:
+                    throw new FormatException("Error in NetCommand: SetValue type not recognised");
+            }
+        }
+
+        private static NetCommand ParseResponse(int session, string[] args)
+        {
+            if (args.Length != 1)
+                throw new MissingFieldException("Error in NetCommand: Response is missing arguments");
+
+            switch (args[0])
+            {
+                case "loginok":
+                    return new NetCommand(ResponseType.LOGINOK, session);
+                case "loginwrong":
+                    return new NetCommand(ResponseType.LOGINWRONG, session);
+                case "notloggedin":
+                    return new NetCommand(ResponseType.NOTLOGGEDIN, session);
+                case "error":
+                    return new NetCommand(ResponseType.ERROR, session);
+                default:
+                    throw new FormatException("Error in NetCommand: Response type not recognised");
+            }
+        }
+
         private static NetCommand ParseSession(int session)
         {
             NetCommand temp = new NetCommand(CommandType.SESSION, session);
@@ -116,11 +333,12 @@ namespace ErgometerLibrary
 
         private static NetCommand ParseChatMessage(int session, string[] args)
         {
-            if (args.Length != 1)
+            if (args.Length != 2)
                 throw new MissingFieldException("Error in NetCommand: Chat Message is missing arguments");
 
             NetCommand temp = new NetCommand(CommandType.CHAT, session);
             temp.ChatMessage = args[0];
+            temp.IsDoctor = bool.Parse(args[1]);
 
             return temp;
         }
@@ -138,17 +356,14 @@ namespace ErgometerLibrary
 
         private static NetCommand ParseLoginRequest(int session, string[] args)
         {
-            bool doctor = bool.Parse(args[1]);
-            if (doctor && args.Length != 3)
+            bool doctor = bool.Parse(args[2]);
+            if (args.Length != 3)
                 throw new MissingFieldException("Error in NetCommand: Doctor login is missing arguments");
-            else if (args.Length != 2)
-                throw new MissingFieldException("Error in NetCommand: Client login is missing arguments");
 
             NetCommand temp = new NetCommand(CommandType.LOGIN, session);
             temp.IsDoctor = doctor;
             temp.DisplayName = args[0];
-            if (doctor)
-                temp.Password = args[2];
+            temp.Password = Helper.Base64Decode(args[1]);
 
             return temp;
         }
@@ -160,13 +375,13 @@ namespace ErgometerLibrary
             switch (Type)
             {
                 case CommandType.LOGIN:
-                    command += "1»ses" + Session + "»" + DisplayName + "»" + IsDoctor + (IsDoctor ? "»" + Password : "");
+                    command += "1»ses" + Session + "»" + DisplayName + "»" + Helper.Base64Encode(Password) + "»" + IsDoctor;
                     break;
                 case CommandType.DATA:
                     command += "2»ses" + Session + "»" + Meting.ToCommand();
                     break;
                 case CommandType.CHAT:
-                    command += "3»ses" + Session + "»" + ChatMessage;
+                    command += "3»ses" + Session + "»" + ChatMessage + "»" + IsDoctor;
                     break;
                 case CommandType.LOGOUT:
                     command += "4»ses" + Session + "»logout";
@@ -174,6 +389,30 @@ namespace ErgometerLibrary
                 case CommandType.SESSION:
                     command += "5»ses" + Session;
                     break;
+                case CommandType.RESPONSE:
+                    command += "6»ses" + Session + "»" + Response.ToString().ToLower();
+                    break;
+                case CommandType.VALUESET:
+                    command += "7»ses" + Session + "»" + Value.ToString().ToLower() + "»" + SetValue;
+                    break;
+                case CommandType.USER:
+                    command += "8»ses" + Session + "»" + DisplayName + "»" + Helper.Base64Encode(Password);
+                    break;
+                case CommandType.REQUEST:
+                    command += "9»ses" + Session + "»" + Request.ToString().ToLower();
+                    break;
+                case CommandType.LENGTH:
+                    command += "10»ses" + Session + "»" + Length.ToString().ToLower() + "»" + LengthValue;
+                    break;
+                case CommandType.SESSIONDATA:
+                    command += "11»ses" + Session + "»" + DisplayName + "»" + Timestamp;
+                    break;
+                case CommandType.BROADCAST:
+                    command += "12»ses" + Session + "»" + ChatMessage;
+                    break;
+                case CommandType.ERROR:
+                    command += "ERROR IN NETCOMMAND";
+                    break;
 
                 default:
                     throw new FormatException("Error in NetCommand: Cannot find type of command");

ErgometerLibrary/NetHelper.cs

@@ -1,26 +1,110 @@
 using System;
+using System.IO;
 using System.Net;
+using System.Net.Security;
 using System.Net.Sockets;
 using System.Text;
 
 namespace ErgometerLibrary
 {
-    class NetHelper
+    public class NetHelper
     {
-        public static void SendNetCommand(TcpClient client, NetCommand command)
+        public static bool SendNetCommand(TcpClient client, NetCommand command)
         {
-            byte[] b = Encoding.ASCII.GetBytes(command.ToString());
+            /*
+            byte[] b = Encoding.Unicode.GetBytes(command.ToString());
             client.GetStream().Write(b, 0, b.Length);
             client.GetStream().Flush();
+            */
+            return SendString(client, command.ToString());
+        }
+
+        public static bool SendString(TcpClient client, string command)
+        {
+            /*
+            byte[] b = Encoding.Unicode.GetBytes(command);
+            client.GetStream().Write(b, 0, b.Length);
+            client.GetStream().Flush();
+            */
+
+            if (client != null && client.Connected)
+            {
+                try
+                {
+                    StreamWriter wr = new StreamWriter(client.GetStream(), Encoding.Unicode);
+                    wr.WriteLine(AESEncrypt.EncryptToString(command));
+                    wr.Flush();
+                    return true;
+                }
+                catch (Exception e)
+                {
+                    return false;
+                }
+            }
+            else
+                return false;
         }
 
         public static NetCommand ReadNetCommand(TcpClient client)
         {
+            /*
             byte[] bytesFrom = new byte[(int) client.ReceiveBufferSize];
             client.GetStream().Read(bytesFrom, 0, (int)client.ReceiveBufferSize);
-            String response = Encoding.ASCII.GetString(bytesFrom);
+            string response = Encoding.Unicode.GetString(bytesFrom);
             NetCommand net = NetCommand.Parse(response);
             return net;
+            */
+
+            string str;
+            NetCommand net;
+            str = ReadString(client);
+
+            if (str != "")
+            { 
+                try
+                {
+                    str = AESEncrypt.DecryptString(str);
+                }
+                catch (Exception e)
+                {
+                    str = "";
+                    net = new NetCommand(NetCommand.CommandType.ERROR, 0);
+                }
+                try {
+                    net = NetCommand.Parse(str);
+                }
+                catch (Exception e)
+                {
+                    net = new NetCommand(NetCommand.CommandType.ERROR, 0);
+                }
+            }
+            else
+                net = new NetCommand(NetCommand.CommandType.ERROR, 0);
+            return net;
+        }
+
+        public static string ReadString(TcpClient client)
+        {
+            /*
+            byte[] bytesFrom = new byte[(int)client.ReceiveBufferSize];
+            client.GetStream().Read(bytesFrom, 0, (int)client.ReceiveBufferSize);
+            string response = Encoding.Unicode.GetString(bytesFrom);
+            return response;
+            */
+            if (client != null && client.Connected)
+            {
+                try {
+                    StreamReader rd = new StreamReader(client.GetStream(), Encoding.Unicode);
+                    string str = rd.ReadLine();
+                    return str;
+                }
+                catch(Exception e)
+                {
+                    return "";
+                }
+            }
+            else
+                return "";
         }
 
         public static IPAddress GetIP(string ipstring)
@@ -32,5 +116,20 @@ namespace ErgometerLibrary
 
             return ip;
         }
+
+        public static IPAddress GetIP()
+        {
+            IPHostEntry host;
+            string localIP = "?";
+            host = Dns.GetHostEntry(Dns.GetHostName());
+            foreach (IPAddress ip in host.AddressList)
+            {
+                if (ip.AddressFamily == AddressFamily.InterNetwork)
+                {
+                    localIP = ip.ToString();
+                }
+            }
+            return GetIP(localIP);
+        }
     }
 }

ErgometerLibrary/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.2.0")]
-[assembly: AssemblyFileVersion("1.0.2.0")]
+[assembly: AssemblyVersion("1.2.0.0")]
+[assembly: AssemblyFileVersion("1.0.3.7")]