/// <summary>Returns a congratulation message when given "CONNECTED"</summary>
/// <param name="User"></param>
/// <param name="Command"></param>
/// <returns></returns>
public override string Parse(ref SwitchboardUser User, string Command)
{
if (Command == "CONNECTED")
{
return("Congrats! You've connected to the server!");
}
return(null);
}
public override string Parse(ref SwitchboardUser User, string Command)
{
string[] CommandSplit = Command.Split(' ');
switch (CommandSplit[0].ToUpper())
{
case "VER":
//Return version of this server
return(HeadServer.TheForm.Config.ServerName + " [Version " + HeadServer.TheForm.Config.ServerVersion + "]");
case "SHOWEXTENSIONS":
//Show all extensions on this server
String AllExtensions = HeadServer.Extensions.Count + " Extension(s)\n\n";
foreach (SwitchboardExtension Extension in HeadServer.Extensions)
{
AllExtensions += Extension.GetName() + " [Version " + Extension.GetVersion() + "]\n";
}
return(AllExtensions);
case "HELP":
//Show Server Help (Or the help of a specific command)
if (CommandSplit.Length == 1)
{
return(Help());
}
foreach (SwitchboardExtension Extension in HeadServer.Extensions)
{
if (Extension.GetName().ToUpper() == CommandSplit[1].ToUpper())
{
return(Extension.Help());
}
}
return("Could not find extension " + CommandSplit[1]);
case "SETPASS":
//Set the password of the current user
if (CommandSplit.Length != 3 || Command.Contains("~"))
{
return("Could not update password due to invalid characters");
}
if (User == HeadServer.AnonymousUser)
{
return("cannot set password if user is not logged in");
}
if (User.SetPassword(CommandSplit[1], CommandSplit[2]))
{
HeadServer.SaveUsers(); //Make sure to save all users.
return("Successfully updated password!");
}
return("Server was unable to update your password");
default:
//Return nada because we could not parse it.
return(null);
}
}
//------------------------------[Constructor]------------------------------
/// <summary>Creates and starts a Switchboard Server</summary>
/// <param name="TheForm">Form that's managing this server</param>
/// <param name="IP">IP to listen on</param>
/// <param name="Port">Port to listen on</param>
/// <param name="WelcomeMessage">Welcome message for each user.</param>
/// <param name="AllowAnonymous">Allow Anonymous Users on this server.</param>
/// <param name="AllowMultiLogin">Allow logins with the same user on different collections</param>
internal SwitchboardServer(MainForm TheForm, string IP, int Port, string WelcomeMessage, bool AllowAnonymous, bool AllowMultiLogin)
{
//Get us our pen
LogPen = File.AppendText("SwitchboardLog.log");
LogPen.WriteLine("\n\n" + TheForm.Config.ServerName + " [Version " + TheForm.Config.ServerVersion + "]\n\n" + "[" + DateTime.Now.ToShortDateString() + "] Starting Server...");
//Get us the main form
this.TheForm = TheForm;
//Get the welcome message
this.WelcomeMessage = WelcomeMessage;
//Register the extensions from the Switchboard Configuration and add the default extensions.
ToLog("Registering extensions...");
Extensions = TheForm.Config.ServerExtensions();
Extensions.Add(new DummyExtension());
Extensions.Add(new SwitchboardMainExtension(this));
//Load users
ToLog("Loading Users...");
Users = new List <SwitchboardUser>();
if (File.Exists("SwitchboardUsers.txt"))
{
//Read all lines from the file
string[] UserStrings = File.ReadAllLines("SwitchboardUsers.txt");
//For each userstring, add a new user
foreach (String UserString in UserStrings)
{
Users.Add(new SwitchboardUser(UserString));
}
}
//Allow Anonymous and generate the anonymous user.
this.AllowAnonymous = AllowAnonymous;
AnonymousUser = new SwitchboardUser("Anonymous", "", 0, "");
this.AllowMultiLogin = AllowMultiLogin;
//Display a warning in case there are no users and we do not allow anonymous access.
if (Users.Count == 0 && !AllowAnonymous)
{
ToLog("WARNING! No registered users and now annonymous access! You won't be able to actually use this server!");
}
//Create the Connections list
ToLog("One last thing...");
Connections = new Dictionary <int, SwitchboardConnection>();
//Finally, Actually start the server.
ToLog("Actually starting the server...");
Ears = new TcpListener(IPAddress.Parse(IP), Port);
Ears.Start();
ToLog("Server started!");
}
//~~~~~~~~~~~~~~{Constructor}~~~~~~~~~~~~~~
public SwitchboardConnection(SwitchboardServer HeadServer, Socket MainSocket, int ID)
{
this.ID = ID;
ConnectedSince = DateTime.Now;
IP = (IPEndPoint)MainSocket.RemoteEndPoint;
River = new NetworkStream(MainSocket);
TheSocket = MainSocket;
this.HeadServer = HeadServer;
HeadServer.ToLog("New user connected from " + IP.Address.ToString());
User = HeadServer.AnonymousUser;
ConsolePreview = "";
}
//~~~~~~~~~~~~~~{Functions}~~~~~~~~~~~~~~
/// <summary>Ticks this connection. Essentially processes any input it may need to parse.</summary>
public void Tick()
{
//If there's data available.
if (IsConnected && River.DataAvailable)
{
//HeadServer.ToLog("Attempting to read message from " + IP.Address.ToString()); //no mas
//Save all the bytes to an array
List <byte> Bytes = new List <byte>();
while (River.DataAvailable)
{
Bytes.Add((byte)River.ReadByte());
}
//Parse that array of bytes as a ASCII encoded string
string Command = Encoding.ASCII.GetString(Bytes.ToArray());
//Handle VBNullChar or \0 in this case.
Command = Command.Replace("\0", "");
//Add this to the list of commands.
ConsolePreview += IP.Address + "> " + Command;
//Now let's try to parse it.
string Reply = "";
string[] CommandSplit = Command.Split(' ');
switch (CommandSplit[0].ToUpper())
{
case "WELCOME":
Reply = HeadServer.GetWelcomeMessage();
break;
case "LOGIN":
if (User != HeadServer.AnonymousUser)
{
Reply = "2";
} //ALREADY
else if (CommandSplit.Length != 3)
{
Reply = "1";
} //INVALID
else
{
SwitchboardUser myUser = null;
//Find the user.
foreach (SwitchboardUser User in HeadServer.Users)
{
if (User.GetUsername().ToUpper() == CommandSplit[1].ToUpper())
{
myUser = User; break;
}
}
if (myUser != null && myUser.VerifyPassword(CommandSplit[2]))
{
if (myUser.IsOnline() && !HeadServer.AllowMultiLogin)
{
Reply = "3";
} //OTHERLOCALE
else
{
User = myUser;
User.SetOnline(true);
//Refresh the list, this connection has logged in
try { HeadServer.TheForm.ServerBWorker.ReportProgress(0); } catch (Exception) {}
//In a try because this may cause a problem if two users try to log in at the same time. The user will still sign in though, so this would sitll
//refresh anyways, so no need to worry.
Reply = "0"; //SUCCESS
}
}
else
{
Reply = "1";
} //INVALID
}
break;
case "LOGOUT":
if (User == HeadServer.AnonymousUser)
{
Reply = "0";
}
else
{
User.SetOnline(false);
User = HeadServer.AnonymousUser;
HeadServer.TheForm.ServerBWorker.ReportProgress(0); //Refresh the list, this connection has logged out.
Reply = "1";
}
break;
case "CLOSE":
Close(true);
return;
case "USERINFO":
if (CommandSplit.Length == 1)
{
Reply = User.InfoString();
}
if (CommandSplit.Length == 2)
{
//Check if they want info on the anonymous user
if (CommandSplit[1].ToUpper() == HeadServer.AnonymousUser.GetUsername().ToUpper())
{
Reply = HeadServer.AnonymousUser.InfoString();
break;
}
//Find the given user
foreach (SwitchboardUser U in HeadServer.Users)
{
if (U.GetUsername().ToUpper() == CommandSplit[1].ToUpper())
{
Reply = U.InfoString();
break;
}
}
//Make sure that if we haven't found it, we say we didn't find it.
if (string.IsNullOrWhiteSpace(Reply))
{
Reply = "NOTFOUND~-1~0";
}
}
break;
case "ID":
Reply = ID + "";
break;
case "REBIND":
//Check if the rebind exist
try {
int OtherConnectionID = int.Parse(CommandSplit[1]);
if (OtherConnectionID == ID)
{
Reply = "Could not rebind connection " + ID + ". Cannot rebind connection to itself";
break;
}
if (!HeadServer.Connections.ContainsKey(OtherConnectionID))
{
Reply = "Could not rebind connection " + OtherConnectionID + ". It was not found.";
break;
}
HeadServer.Connections[OtherConnectionID].AbsorbConnection(this);
//Absorbing this connection should stop the thread but just in case
TickThread.Abort();
} catch (Exception E) { Reply = "An Exception Occurred:\n\n" + E.Message + "\n" + E.StackTrace; }
break;
case "REPEAT":
Reply = LastMessage;
break;
default:
if (!HeadServer.AllowAnonymous && User == HeadServer.AnonymousUser)
{
Reply = "You're unauthorized to run any other commands.";
}
else
{
foreach (SwitchboardExtension extension in HeadServer.Extensions)
{
if (!string.IsNullOrEmpty(Reply))
{
break;
}
Reply = extension.Parse(ref User, Command);
}
if (string.IsNullOrEmpty(Reply))
{
Reply = "Could not parse command [" + Command + "]";
}
}
break;
}
if (string.IsNullOrWhiteSpace(Reply))
{
Reply = "An unspecified error occured";
}
//Time to return whatever it is we got.
Send(Reply);
//and we're done.
}
}
//In implementation, the settings function should probably launch a tiny winform.
//Your extension, should it have settings, should be able to save them, and load them when being instantiated.
//Settings subroutine should only launch while the server *isn't running*
/// <summary>Parses a given command.</summary>
/// <param name="User">USER attempting to execute a command within this extension</param>
/// <param name="Command">The command the user is trying to execute</param>
/// <returns>A string if the extension was able to parse it, otherwise null</returns>
public abstract string Parse(ref SwitchboardUser User, string Command);
