/// <summary>
/// Adds a ChatroomLogic object to the list managed by this
/// class.
/// </summary>
/// <param name="crl">ChatroomLogic to add</param>
public void addChat(ChatroomLogic crl)
{
if (!chatrooms.Contains(crl))
{
chatrooms.Add(crl);
}
}
/// <summary>
/// Main entrypoint of the program.
/// Starts the server, then listens for user commands.
/// </summary>
/// <param name="args">Command line arguments</param>
static void Main(string[] args)
{
while (restart)
{
exit = false;
restart = true;
Console.Out.WriteLine("Server autostarting at port " + PORT);
//Start server
ChatroomList chatroomList = new ChatroomList();
Console.WriteLine("Loading...");
if (LoadSaveData(chatroomList))
{
Console.WriteLine("Loading successful");
}
else
{
Console.WriteLine("No data found. Starting with defaults.");
ChatroomLogic mainRoom = new ChatroomLogic();
ChatroomLogic mainRoom2 = new ChatroomLogic();
mainRoom.name = "Global 1";
mainRoom2.name = "Global 2";
chatroomList.addChat(mainRoom);
chatroomList.addChat(mainRoom2);
ChatroomList.chatroomServices.CreateChatroom(
mainRoom.name, mainRoom.chatroomID, TEST_CLIENT, "pass", ChatType.MULTIPLE_USERS);
ChatroomList.chatroomServices.CreateChatroom(
mainRoom2.name, mainRoom2.chatroomID, TEST_CLIENT, "pass", ChatType.MULTIPLE_USERS);
}
TcpListener serverSocket
= new TcpListener(System.Net.IPAddress.Loopback, PORT);
serverSocket.Start();
Thread connectorThread = new Thread(
() => handleIncomingConnections(serverSocket, chatroomList));
connectorThread.Name = "Connector Thread";
connectorThread.Priority = ThreadPriority.Lowest;
connectorThread.Start();
while (!exit)
{
RespondToUserInput();
}
Console.WriteLine("Saving...");
serverSocket.Stop();
chatroomList.SendGlobalMessage(new Message {
chatID = -1,
command = "CLOSING",
message = "0"
});
chatroomList.Stop();
if (restart == true)
{
Console.WriteLine("Restarting...");
}
}
}
/// <summary>
/// All messages with the command "SEND" will come through this function.
/// This function acts as a main pipe for all messages and sends
/// an update to the proper ChatroomLogic. Does nothing
/// if the ChatroomLogic object is not found.
/// </summary>
/// <param name="msg"></param>
public void update(Message msg, int userId)
{
ChatroomLogic chatroom = idToChatroom(msg.chatID);
if (chatroom != null)
{
chatroomServices.AddMessage(msg.chatID, userId, msg.message);
chatroom.update(msg);
}
}
/// <summary>
/// Handles when a user attempts to join a chat.
/// </summary>
/// <param name="incomingMsg">The message used to
/// login to a chat with.</param>
private void JoinChatCommand(Message incomingMsg)
{
string hashword2 = incomingMsg.message.Substring(0, HASHED_PW_SIZE);
int id = -1;
if (int.TryParse(incomingMsg.message.Substring(HASHED_PW_SIZE,
incomingMsg.message.Length - HASHED_PW_SIZE), out id))
{
ChatroomLogic tempChatroom2 =
chatroomList.idToChatroom(id);
if (tempChatroom2 != null)
{
if (ChatroomList.chatroomServices.AddUser(
tempChatroom2.chatroomID,
this.userID, hashword2))
{
tempChatroom2.Subscribe(this);
tempChatroom2.RegisteredUsers.Add(this.userID);
messageService.SendMessage(
new Message
{
chatID = -1,
command = "ACK",
message = "Chatroom login succeded"
});
SendChatroomList();
SendChatHistory(tempChatroom2.chatroomID);
}
else
{
messageService.SendMessage(
new Message
{
chatID = -1,
command = "EXCEPTION",
message = "Chatroom login failed"
});
return;
}
}
}
else
{
messageService.SendMessage(
new Message
{
chatID = -1,
command = "EXCEPTION",
message = "Bad chatroom id"
});
}
}
/// <summary>
/// Checks to see if the client is sending a message
/// to a valid chat room, then sends it to all
/// subscribes members of that chat room.
/// </summary>
/// <param name="incomingMsg">Details about the message and the
/// chat room it will be sent to.</param>
private void SendCommand(Message incomingMsg)
{
incomingMsg.message = DateTime.Now.ToString()
+ " : " + username + " : " + incomingMsg.message;
ChatroomLogic sendChatroom
= chatroomList.idToChatroom(incomingMsg.chatID);
if (sendChatroom != null &&
sendChatroom.RegisteredUsers.Contains(userID))
{
chatroomList.update(incomingMsg, userID);
}
else
{
Console.WriteLine("Bad SEND message chatID");
}
}
/// <summary>
/// Helper function for loading in SQL database data.
/// </summary>
/// <param name="chatroomList"></param>
/// <returns>Returns true if load was successful,
/// false otherwise.</returns>
private static bool LoadSaveData(ChatroomList chatroomList)
{
try
{
int hightestChatroomID = 0;
DataTable dataTable
= ChatroomList.chatroomServices.GetAllChatrooms();
if (dataTable.Rows.Count != 0)
{
foreach (DataRow row in dataTable.Rows)
{
string name = row["chatroomname"].ToString();
int id = int.Parse(row["chatroomid"].ToString());
ChatroomLogic temp = new ChatroomLogic();
temp.name = name;
temp.chatroomID = id;
hightestChatroomID =
hightestChatroomID > id ? hightestChatroomID : id;
chatroomList.addChat(temp);
DataTable userTable
= ChatroomList.chatroomServices.GetChatUsers(
temp.chatroomID);
foreach (DataRow userRow in userTable.Rows)
{
int userId = -1;
if (int.TryParse(userRow["userid"].ToString(),
out userId))
{
temp.RegisteredUsers.Add(userId);
}
}
}
ChatroomLogic.numChatRoomsCreated = hightestChatroomID + 1;
return(true);
}
}
catch (Exception e) { }
return(false);
}
/// <summary>
/// Attempts to create a new chat for the client.
/// </summary>
/// <param name="incomingMsg">Details about the new chat.</param>
private void NewChatCommand(Message incomingMsg)
{
//message = password for chatroom
//chatID = wether it is a private room. 1 = direct message
//room, 0 = normal password protected room
ChatroomLogic tempChatroom = new ChatroomLogic();
string chatname = incomingMsg.message.Substring(HASHED_PW_SIZE,
incomingMsg.message.Length - HASHED_PW_SIZE);
string hashword = incomingMsg.message.Substring(0, HASHED_PW_SIZE);
if (ChatroomList.chatroomServices.CreateChatroom(chatname,
tempChatroom.chatroomID,
this.userID, hashword, incomingMsg.chatID))
{
chatroomList.addChat(tempChatroom);
tempChatroom.name = chatname;
tempChatroom.Subscribe(this);
tempChatroom.RegisteredUsers.Add(this.userID);
messageService.SendMessage(new Message
{
chatID = -1,
command = "ACK",
message = "Chatroom has been created"
});
SendChatroomList();
SendChatHistory(tempChatroom.chatroomID);
}
else
{
messageService.SendMessage(new Message
{
chatID = -1,
command = "EXCEPTION",
message = "Chatroom name already taken"
});
}
}
/// <summary>
/// Subscribes this client to a chat. Any new information to the ChatroomLogic that
/// this object is subsribed to will come through the
/// OnNext() function.
/// </summary>
/// <param name="crl"></param>
public void subsribeToChat(ChatroomLogic crl)
{
crl.Subscribe(this);
crl.RegisteredUsers.Add(this.userID);
chatrooms.Add(crl);
}
