/// <summary>
/// Updates user list of a new client with all current users
/// </summary>
/// <param name="newClient"></param>
/// <param name="userName"></param>
private void UpdateUserWithConnectedUsersList(ConcurrentStreamWriter newClient, string userName)
{
foreach (KeyValuePair <User, ConcurrentStreamWriter> client in ConnectedUsers)
{
User user = client.Key;
if (user.Username != userName)
{
Console.WriteLine("Updating user with: " + user.Username);
using MemoryStream mem = new MemoryStream();
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.GetUsers);
writer.Write(user.Username);
writer.Write(user.PublicKey);
writer.Write(Name);
}
newClient.Write(mem.ToArray());
}
}
}
/// <summary>
/// Update an already connected client's user list about one specific user.
/// true for add, false for remove
/// </summary>
/// <param name="userName"></param>
/// <param name="status"></param>
public void UpdateAllConnectedUsersWithNewUser(User user, bool status)
{
//if preexisting client,
foreach (KeyValuePair <User, ConcurrentStreamWriter> client in ConnectedUsers)
{
User endUser = client.Key;
if (endUser.Username != user.Username)
{
Console.WriteLine("Updating " + endUser.Username + " with: " + user.Username);
ConcurrentStreamWriter broadcastStream = client.Value;
using MemoryStream mem = new MemoryStream();
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.UpdateUser);
writer.Write(user.Username);
writer.Write(user.PublicKey);
writer.Write(status);
writer.Write(Name);
}
broadcastStream.Write(mem.ToArray());
}
}
}
/// <summary>
/// Sendes a byte array message to a user.
/// </summary>
/// <param name="message"></param>
/// <param name="count"></param>
/// <param name="sourceUser"></param>
/// <param name="targetUser"></param>
public void SendMessage(byte[] message, int count, string sourceUser, string targetUser)
{
foreach (KeyValuePair <User, ConcurrentStreamWriter> Item in ConnectedUsers)
{
User user = Item.Key;
if (user.Username == targetUser)
{
ConcurrentStreamWriter broadcastSocket = Item.Value;
using (MemoryStream mem = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.UserMessage);
writer.Write(Name);
writer.Write(sourceUser);
writer.Write(count);
writer.Write(message);
}
broadcastSocket.Write(mem.ToArray());
}
Console.WriteLine("[" + sourceUser + " sending message to " + targetUser + "]:" + Convert.ToBase64String(message)); //base 64 is smallest representation of large text - REMOVE THIS AFTER TESTING
}
}
}
/// <summary>
/// Attempt to join a chat room.
/// If it is public, a user will be allowed to join if they aren't on the banned user list
/// If it isn't public, a user will only be allowed if they are on the allowed users list
/// </summary>
/// <param name="user"></param>
/// <param name="sslStream"></param>
/// <returns></returns>
public bool Join(User user, ConcurrentStreamWriter sslStream)
{
if (IsPublic)
{
if (!BannedUsers.Contains(user.Username))
{
using (MemoryStream mem = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.SystemMessage);
writer.Write(Name);
writer.Write("You have joined: " + Name + ".\n The administrator for this chat room is: " + Admin);
}
sslStream.Write(mem.ToArray());
}
ConnectedUsers.Add(user, sslStream);
//ClientHandler client = new ClientHandler(sslStream, user, Name);
//client.Start();
}
else
{
using (MemoryStream mem = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.SystemMessage);
writer.Write(Name);
writer.Write(string.Format("You are banned from: {0}", Name));
}
sslStream.Write(mem.ToArray());
}
return(false);
}
}
else
{
if (AllowedUsers.Contains(user.Username))
{
using (MemoryStream mem = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.SystemMessage);
writer.Write(Name);
writer.Write("You have joined: " + Name + ".\n The administrator for this chat room is: " + Admin);
}
sslStream.Write(mem.ToArray());
}
ConnectedUsers.Add(user, sslStream);
// ClientHandler client = new ClientHandler(sslStream, user, Name);
// client.Start();
}
else
{
using (MemoryStream mem = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(mem, Encoding.UTF8, true))
{
writer.Write((int)Opcode.SystemMessage);
writer.Write(Name);
writer.Write(string.Format("{0} is not a public chat room, and you are not on the allowed user list.", Name));
}
sslStream.Write(mem.ToArray());
}
return(false);
}
}
UpdateUserWithConnectedUsersList(sslStream, user.Username);
UpdateAllConnectedUsersWithNewUser(user, true);
return(true);
}