/// <summary>
/// Connects to an IRC server at the chosen addres and port.
/// </summary>
/// <param name="serverAdddress">The address of the server.</param>
/// <param name="serverPort">The port to connect to the server on.</param>
/// <returns>Returns the newly connected socket.</returns>
private Socket connectToServer(string serverAdddress, int serverPort)
{
TcpClient client = new TcpClient(serverAdddress, serverPort);
// If the socket is connected, return it.
if (client.Connected)
{
// Set the server name by getting the exact host entry from
// the DNS server.
this.ServerName.Text = userInfo.server = Dns.GetHostEntry(((IPEndPoint)client.Client.RemoteEndPoint).Address).HostName;
// Set the current channel to a new chat tab.
this.currentChannel = new ChannelTab();
// Set the message box for the current channel to the server message box.
this.currentChannel.msgRecvBox = this.msgRecvBox;
// Set the first tab's text to the server name.
channelTabs.TabPages[0].Text = userInfo.server;
// Return the socket.
return client.Client;
}
// Return null if the socket couldn't be connected to.
return null;
}
/// <summary>
/// Used to join a channel on a server.
/// </summary>
/// <returns>Returns true if successful, false otherwise.</returns>
public bool joinChannel()
{
// Check if the user is already in a channel.
if (joinChannelForm != null)
{
// Dipose of and set the join channel form to null.
joinChannelForm.Dispose();
joinChannelForm = null;
}
// Create a new join channel form.
joinChannelForm = new JoinChannelForm();
// Then show the form so the user can type in the channel name and check the results.
if (joinChannelForm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
// Check that the tab does not already exist.
if (channelTabs.TabPages.ContainsKey(joinChannelForm.channel.ToLower()))
{
// If the channel already exists, set the selected tab.
channelTabs.SelectedTab = channelTabs.TabPages[joinChannelForm.channel.ToLower()];
// Also set the join channel form to null.
joinChannelForm = null;
// Return false since it was unsuccessful.
return false;
}
else
{
// Create a new tab with the channel name as its text.
channelTabs.TabPages.Add(joinChannelForm.channel.ToLower(), joinChannelForm.channel);
// Create the new chat tab.
ChannelTab newChatTab = new ChannelTab();
// Set the tab dock style to fill the tab.
newChatTab.Dock = DockStyle.Fill;
// Set the socket, user info form and join channel form.
newChatTab.joinChannelForm = joinChannelForm;
newChatTab.userInfo = userInfo;
newChatTab.mainSocket = mainSocket;
newChatTab.server = this;
// Clear the message recieved text box.
newChatTab.msgRecvBox.Text = "";
// Focus on the send message text box.
newChatTab.sendMsgBox.Focus();
// Add the tab to the list of chennels available.
channels.Add(joinChannelForm.channel.ToLower(), newChatTab);
// Set the current channel.
currentChannel = (ChannelTab)(channels[joinChannelForm.channel.ToLower()]);
// Set the tab name for the channel.
channelTabs.TabPages[channelTabs.TabPages.IndexOfKey(joinChannelForm.channel)].Controls.Add(newChatTab);
// Select the newly created channel.
channelTabs.SelectTab(joinChannelForm.channel);
// Send the command to join the desired channel.
mainSocket.Send(Encoding.UTF8.GetBytes("JOIN " + joinChannelForm.channel + "\r\n"));
}
}
else
{
// If joining the channel was cancelled, set the join channel form to null.
joinChannelForm = null;
// Return false since it was unsuccessful.
return false;
}
// Return true since it was successful.
return true;
}
/// <summary>
/// Creates a new private chat with a specific user.
/// </summary>
/// <param name="userName">The user to start a private chat with.</param>
public void newPrivateChat(string userName)
{
// Check if the tab already exists for this private chat.
if (!channelTabs.TabPages.ContainsKey(userName.ToLower().TrimEnd(new char[] { ' ' })))
{
// Create a new tab with the channel name as its text.
channelTabs.TabPages.Add(userName.ToLower().TrimEnd(new char[] { ' ' }), userName.TrimEnd(new char[] { ' ' }));
// Create the new chat tab.
ChannelTab newChatTab = new ChannelTab();
// Set the tab dock style to fill the tab.
newChatTab.Dock = DockStyle.Fill;
// Set the socket, user info form and join channel form, but setting the channel to be
// the other users' name.
newChatTab.joinChannelForm = new JoinChannelForm();
newChatTab.joinChannelForm.channel = userName.TrimEnd(new char[] { ' ' });
newChatTab.userInfo = userInfo;
newChatTab.mainSocket = mainSocket;
// Set the new tab's server.
newChatTab.server = this;
// Clear the new tab's user list box.
newChatTab.userListBox.Items.Clear();
// Add the other user from the private chat to the user list box.
newChatTab.userListBox.Items.Add(userName);
// Clear the message recieved text box.
newChatTab.msgRecvBox.Text = "";
// Focus on the send message text box.
newChatTab.sendMsgBox.Focus();
// Add the tab to the list of chennels available.
channels.Add(userName.ToLower().TrimEnd(new char[] { ' ' }), newChatTab);
// Set the current channel.
currentChannel = (ChannelTab)(channels[userName.ToLower().TrimEnd(new char[] { ' ' })]);
// Set the tab name for the channel.
channelTabs.TabPages[channelTabs.TabPages.IndexOfKey(userName.ToLower().TrimEnd(new char[] { ' ' }))].Controls.Add(newChatTab);
// Select the newly created channel.
channelTabs.SelectTab(userName.ToLower().TrimEnd(new char[] { ' ' }));
}
}
/// <summary>
/// Perform the actual commands in a specific chat tab.
/// </summary>
/// <param name="currentChannel">The channel to perform the command in.</param>
/// <param name="command">The command to perform.</param>
/// <param name="parameters">The parameters for the command</param>
public void doCommand(ChannelTab currentChannel, string command, string[] parameters)
{
// Check if the command was a ping command.
if (command.ToUpper().Equals("PING"))
{
// Send the pong response as unicode bytes.
mainSocket.Send(Encoding.UTF8.GetBytes("PONG :" + parameters[0] + "\r\n"));
}
// Check if the command was a pong commands.
else if (command.ToUpper().Equals("PONG"))
{
// Signal that a pong response was gotten.
currentChannel.pingDone();
}
// Check if the command was a notice command.
else if (command.ToUpper().Equals("NOTICE"))
{
// Print out the command with a space afterwards.
this.msgRecvBox.AppendText(command + " ");
// Loop through all of the parameters.
foreach (string param in parameters)
{
// Print out each parameter to the message box.
this.msgRecvBox.AppendText(param);
// Check if the parameters contains the strings "response".
if (param.Contains("response"))
{
// If the command contains the text "response", then the nickname and
// username are sent over in that order.
mainSocket.Send(Encoding.UTF8.GetBytes("NICK " + userInfo.nickname + "\r\n"));
mainSocket.Send(Encoding.UTF8.GetBytes("USER " + userInfo.username + " 8 * :" + userInfo.realName + "\r\n"));
}
}
// End the message box with a newline.
this.msgRecvBox.Text += "\n";
}
// Check if the command is 433, which signals a nickname conflict.
else if (command.Equals("433"))
{
// Alert the user that the name is already taken.
currentChannel.msgRecvBox.Text += "Name already taken!\n";
// Recreate the user info form and show it.
userInfo = new UserInfoForm();
userInfo.ShowDialog();
// Retry sending the username and nickname.
mainSocket.Send(Encoding.UTF8.GetBytes("NICK " + userInfo.nickname + "\r\n"));
mainSocket.Send(Encoding.UTF8.GetBytes("USER " + userInfo.username + " 8 * :" + userInfo.realName + "\r\n"));
}
// Check if command is 376, whichs signals the end of the motd command.
else if (command.Equals("376"))
{
#if DEBUG
// Print out the command if debugging.
currentChannel.msgRecvBox.AppendText(command + "\n");
#endif
}
// Check if the command is 332, which signals the channel topic command.
else if (command.Equals("332"))
{
// Set the channel topic text to be empty.
currentChannel.ChannelTopic.Text = String.Empty;
// Loop through all of the parameters after the first one.
for (int i = 1; i < parameters.Length; i += 1)
{
// Append each parameter onto the channel topic's text.
currentChannel.ChannelTopic.Text += parameters[i] + ":";
}
// Trim the ending of any spaces, newlines, or line returns.
currentChannel.ChannelTopic.Text.TrimEnd(new char[] { ':', ' ', '\n', '\r' });
}
// Check for commands 001, 002, 003, 004, 005, 250, 251, 252, 253, 254, 255, 265, 266, 372, and 375
// all of which are information about the server.
else if (command.Equals("001") || command.Equals("002") ||
command.Equals("003") || command.Equals("004") ||
command.Equals("005") || command.Equals("250") ||
command.Equals("251") || command.Equals("252") ||
command.Equals("253") || command.Equals("254") ||
command.Equals("255") || command.Equals("265") ||
command.Equals("266") || command.Equals("372") ||
command.Equals("375"))
{
// Enable the join channel toolstrip item.
joinChannelToolStripMenuItem.Enabled = true;
// Enable the connection image.
currentChannel.connectionImage.Enabled = true;
// Loop through all of the parameters after the first one.
for (int i = 1; i < parameters.Length; i += 1)
{
// Append each parameter onto the messsage box with a colon after since that
// is what separaters them.
this.msgRecvBox.AppendText(parameters[i] + ":");
}
// Trim the ending of the text of any colons that are still there.
this.msgRecvBox.Text = this.msgRecvBox.Text.TrimEnd(new char[] { ':' });
// Append a newline character to the end as well.
this.msgRecvBox.AppendText("\n");
// Check if the command is not 372.
if (!command.Equals("372"))
{
// If so, append another newline character for readability.
this.msgRecvBox.AppendText("\n");
}
}
// Check if the command is 353, which signals the list of users in the channel.
else if (command.Equals("353"))
{
// Create an old tab variable.
ChannelTab oldTab = currentChannel;
// Check if the channel is on another tab.
if (channels.ContainsKey(parameters[0].Split(' ')[3].ToLower()))
{
// If so, set the current channel.
currentChannel = (ChannelTab)channels[parameters[0].Split(' ')[3].ToLower()];
}
// Clear the old username list.
currentChannel.userListBox.Items.Clear();
// Split the list of users in the room.
string[] userList = parameters[1].Split(' ');
// Now loop through the list of users.
foreach (string username in userList)
{
// Check for any invalid characters at the beginning of
// the user's name.
if (usernameInvalidChars.Contains<char>(username.ToCharArray()[0]))
{
// Check that the user is not already in the list.
if (!currentChannel.userListBox.Items.Contains(username.Substring(1)))
{
// If there is an invalid character, ignore the first character
// and add the name to the username list.
currentChannel.userListBox.Items.Add(username.Substring(1));
}
}
else
{
// Otherwise, also check that the user's name isn't an empty string.
if (!username.Equals(string.Empty))
{
// Check that the user is not already in the list.
if (!currentChannel.userListBox.Items.Contains(username))
{
// Add the username to the list.
currentChannel.userListBox.Items.Add(username);
}
}
}
}
#if DEBUG
// Print out the command recieved to the screen if debugging.
currentChannel.msgRecvBox.AppendText(command + "\n");
#else
// If not debugging, nicely print out a message depending on the number of users
// in the channel.
switch (currentChannel.userListBox.Items.Count - 1)
{
case 0:
currentChannel.msgRecvBox.Text += "No users in the current channel.";
break;
case 1:
currentChannel.msgRecvBox.Text += "Current user in channel: ";
break;
default:
currentChannel.msgRecvBox.Text += "Current users in channel: ";
break;
}
// Then print out each user that is in the channel.
foreach (string user in currentChannel.userListBox.Items)
{
if (!user.Equals(userInfo.username))
{
currentChannel.msgRecvBox.AppendText(user + ", ");
}
}
// Trim the ending of any invalid characters.
currentChannel.msgRecvBox.Text = currentChannel.msgRecvBox.Text.TrimEnd(new char[] { ',', ' ' }) + "\n";
#endif
// Enable the connection image.
currentChannel.connectionImage.Enabled = true;
// Set the current channel back to it's original channel.
currentChannel = oldTab;
}
// Check if the command is a nickname change (denoted by having NICK).
else if (command.ToUpper().Equals("NICK"))
{
for(int i = 0;i < currentChannel.userListBox.Items.Count;i += 1)
{
if (currentChannel.userListBox.Items[i].Equals(parameters[parameters.Length - 1]))
{
currentChannel.userListBox.Items[i] = parameters[0];
currentChannel.msgRecvBox.AppendText(parameters[parameters.Length - 1] + " has changed their nickname to " + parameters[0] + "!\n");
break;
}
}
}
// Check if the command is a message (denoted by having PRIVMSG).
else if (command.ToUpper().Equals("PRIVMSG"))
{
// Then check if the command contains the channel name.
if (parameters[0].ToLower().Contains(currentChannel.joinChannelForm.channel.ToLower()) ||
parameters[parameters.Length - 1].ToLower().Contains(currentChannel.joinChannelForm.channel.ToLower()))
{
// If so, filter out the username of whoever sent it, and
// display the response in the message recieved text box.
currentChannel.msgRecvBox.AppendText(parameters[parameters.Length - 1] + ": ");
// Then loop through all of the paremeters.
for (int i = 1; i < parameters.Length - 1; i += 1)
{
// Append the message box with the parameter and a colon at the end
// since they are colon separated.
currentChannel.msgRecvBox.AppendText(parameters[i] + ":");
}
// Trim the ending of any leftover colons.
currentChannel.msgRecvBox.Text = currentChannel.msgRecvBox.Text.TrimEnd(new char[] { ':' });
// Append a newline to the end of it.
currentChannel.msgRecvBox.AppendText("\n");
// Check if the selected tab is the one that received the message.
if (!currentChannel.joinChannelForm.channel.ToLower().Equals(channelTabs.SelectedTab.Text.ToLower()))
{
// If not, set the chat notification.
currentChannel.notification = Chat_Notifications.Message;
}
}
// If not, then it was a private messgae most likely.
else
{
// Create a new private chat.
newPrivateChat(parameters[parameters.Length - 1]);
// Display the user the message is from.
currentChannel.msgRecvBox.AppendText(parameters[parameters.Length - 1] + ": ");
// Then loop through all of the paremeters.
for (int i = 1; i < parameters.Length - 1; i += 1)
{
// Append the message box with the parameter and a colon at the end
// since they are colon separated.
currentChannel.msgRecvBox.AppendText(parameters[i] + ":");
}
// Trim the ending of any leftover colons.
currentChannel.msgRecvBox.Text = currentChannel.msgRecvBox.Text.TrimEnd(new char[] { ':' });
// Append a newline to the end of it.
currentChannel.msgRecvBox.AppendText("\n");
}
}
// Check if the command is PART, KILLED, or QUIT.
else if (command.ToUpper().Equals("PART") || command.ToUpper().Equals("KILLED") || command.ToUpper().Equals("QUIT"))
{
// If so, print out that the user has quit.
currentChannel.msgRecvBox.AppendText(parameters[parameters.Length - 1] + " has quit:");
// Then loop through all of the paremeters.
for (int i = 1; i < parameters.Length - 1; i += 1)
{
// Append the message box with the parameter and a colon at the end
// since they are colon separated.
currentChannel.msgRecvBox.AppendText(parameters[i] + ":");
}
// Trim the ending of any leftover colons.
currentChannel.msgRecvBox.Text = currentChannel.msgRecvBox.Text.TrimEnd(new char[] { ':' });
// Append a newline to the end of it.
currentChannel.msgRecvBox.AppendText("\n");
// Then remove the user from the user list box.
currentChannel.userListBox.Items.Remove(parameters[parameters.Length - 1]);
// Check if the selected tab is the one that received the message.
if (!currentChannel.joinChannelForm.channel.ToLower().Equals(channelTabs.SelectedTab.Text.ToLower()))
{
// If not, set the chat notification.
currentChannel.notification = Chat_Notifications.UserLeft;
}
}
// Check if the command is JOIN.
else if (command.ToUpper().Equals("JOIN"))
{
// If so, print out that the user has joined.
currentChannel.msgRecvBox.AppendText(parameters[parameters.Length - 1] + " has joined!\n");
// Check that the user is not already in the list.
if (!currentChannel.userListBox.Items.Contains(parameters[parameters.Length - 1]))
{
// Then add the user to the user list box.
currentChannel.userListBox.Items.Add(parameters[parameters.Length - 1]);
}
// Check if the selected tab is the one that received the message.
if (!currentChannel.joinChannelForm.channel.ToLower().Equals(channelTabs.SelectedTab.Text.ToLower()))
{
// If not, set the chat notification.
currentChannel.notification = Chat_Notifications.UserJoined;
}
}
#if DEBUG
else
{
// Otherwise, just print out the command if debugging and it is not a newline.
currentChannel.msgRecvBox.AppendText(command + " ");
foreach (string param in parameters)
{
currentChannel.msgRecvBox.AppendText(param);
}
currentChannel.msgRecvBox.Text += "\n";
}
#endif
// Check if the text box length is greater than 0.
if (currentChannel.msgRecvBox.Text.Length > 0)
{
// If so, set the selection starting position (the carret) and scroll to the
// carret.
currentChannel.msgRecvBox.SelectionStart = currentChannel.msgRecvBox.Text.Length - 1;
currentChannel.msgRecvBox.ScrollToCaret();
}
else
{
// Otherwise, reset the selection starting position (the carret) and scroll to the
// carret.
currentChannel.msgRecvBox.SelectionStart = 0;
currentChannel.msgRecvBox.ScrollToCaret();
}
// Refresh the channel tabs to display changes.
channelTabs.Refresh();
}
