public ChatManager(Networker networker, CryptoManager cryptoManager)
{
m_networker = networker;
m_cryptoManager = cryptoManager;
m_cryptoManager.Id = 0;
m_personalCryptoManagers = new Dictionary <string, CryptoManager>();
m_serverCheckThread = new Thread(ServerMessagesThread);
m_serverCheckThread.Start();
}
// static functions
//This function contains server-specific strings
public static ChatManager TryRegister(Networker networker, string login, string password, out chatManagerError error)
{
error = chatManagerError.userAlreadyExists;
ChatManager chatManager = TryStartChatManager(networker, String.Format("{0}&login={1}&password={2}", ServerSpecificStrings.MesageTypeRegister, login, password));
if (chatManager != null)
{
error = chatManagerError.noError;
}
return(chatManager);
}
//This function contains server-specific strings
public static ChatManager TryAuth(Networker networker, string login, string password, out chatManagerError error)
{
error = chatManagerError.failedToAuth;
ChatManager chatManager = TryStartChatManager(networker, String.Format("{0}&login={1}&password={2}", ServerSpecificStrings.MesageTypeAuth, login, password));
if (chatManager != null)
{
chatManager.AddUserCredintals(login, password);
error = chatManagerError.noError;
}
return(chatManager);
}
//Estabilish crypto tunnel and save session keys to CryptoManager object
static CryptoManager Handshake(Networker networker)
{
CryptoManager cryptoManager = null;
string AESKey = CryptoManager.GetAESKeyB64();
string response = networker.SendMessageAndWaitResponse(
CryptoManager.EncryptRSA2B64("message=handshake&key=" + AESKey)
);
if (!String.IsNullOrEmpty(response))
{
CryptoManager cryptoManagerTest = new CryptoManager(AESKey, response);
string responseConnected = ChatManager.SendMessageAndWaitResponseCrypted(ServerSpecificStrings.MesageOk, networker, cryptoManagerTest);
if (responseConnected.Equals(ServerSpecificStrings.MesageOk))
{
cryptoManager = cryptoManagerTest;
}
}
return(cryptoManager);
}
private void bgWrkr_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
object tbToFound = null;
object tblToFound = null;
object tbpToFound = null;
this.Dispatcher.Invoke(new Action(() => {
tbToFound = FindName("ServerAddressTextBox");
tblToFound = FindName("LoginTexBox");
tbpToFound = FindName("PasswordBox");
}));
if (tbToFound is TextBox && tblToFound is TextBox && tbpToFound is PasswordBox)
{
TextBox serverAddresTextBox = tbToFound as TextBox;
TextBox loginTexBox = tblToFound as TextBox;
PasswordBox passwordBox = tbpToFound as PasswordBox;
string[] serverAddress = null;
string login = "";
string password = "";
this.Dispatcher.Invoke(new Action(() => {
serverAddress = serverAddresTextBox.Text.Split(':');
login = loginTexBox.Text;
password = passwordBox.Password;
}));
if (Networker.TryConnect(serverAddress[0], Convert.ToInt32(serverAddress[1])))
{
chatManagerError cmError;
ChatManager cm = ServerConnectionHelper.TryAuth(
new Networker(serverAddress[0], Convert.ToInt32(serverAddress[1])),
login,
password,
out cmError);
if (cm != null)
{
e.Result = cm;
}
}
;
}
}
//Trying to get positive response from server, if all OK, then create ChatManager
//This function contains server-specific strings
public static ChatManager TryStartChatManager(Networker networker, string serverRequest)
{
CryptoManager cryptoManager = Handshake(networker);
if (cryptoManager != null)
{
//message = serverRequest
string response = ChatManager.SendMessageAndWaitResponseCrypted(serverRequest, networker, cryptoManager);
if (response.Equals(ServerSpecificStrings.MesageOk))
{
return(new ChatManager(networker, cryptoManager));
}
else
{
return(null);
}
}
else
{
return(null);
}
}
public static string SendMessageAndWaitResponseCrypted(string message, Networker networker, CryptoManager cryptoManager)
{
string encryptedResponseB64 = networker.SendMessageAndWaitResponse(cryptoManager.EncryptWithSessionB64(message));
return(cryptoManager.DecryptWithSessionB64(encryptedResponseB64));
}
