/// <summary>
/// Try to login into user account.
/// </summary>
/// <param name="login">users login.</param>
/// <param name="password">users password.</param>
/// <returns>server's response.</returns>
/// <exception cref="ConnectionInterruptedException"></exception>
/// <exception cref="CertificateException"></exception>
public async Task <LoginRegisterResponse> Login(string login, string password)
{
if (isLoggedIn)
{
return(LoginRegisterResponse.Error);
}
// certificate
X509Certificate2 cert = SslTools.CreateCertificate(typeof(Client), "CryptoMessenger.Certificate.cert.pfx");
await client.ConnectWithTimeoutAsync(ip, port, cert, Properties.Settings.Default.WaitServerConnectionDelayMsec);
LoginRegisterResponseMessage serverResp;
try
{
// send login request
client.SendMessage(new LoginRequestMessage
{
Login = login,
Password = password
});
// async wait for server's response
serverResp = (LoginRegisterResponseMessage)await client.ReceiveMessageAsync();
}
catch (ConnectionInterruptedException)
{
client.Close();
throw;
}
// dont disconnect if login success
if (LoginRegisterResponse.Success.Equals(serverResp.Response))
{
isLoggedIn = true;
Name = login;
}
else
{
client.Close();
}
return(serverResp.Response);
}
/// <summary>
/// Try to register client. Send response about result.
/// </summary>
/// <param name="client">client.</param>
/// <param name="message">client's message.</param>
private void RegisterClient(MpClient client, RegisterRequestMessage message)
{
Message response;
if (string.IsNullOrEmpty(message.Login) ||
string.IsNullOrEmpty(message.Password) ||
message.Login.Length > 20 ||
message.Password.Length > 30)
{
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Error
};
}
else
{
if (DBoperations.Register(message.Login, message.Password))
{
log.Info($"Client registered: {message.Login}");
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Success
};
}
else
{
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Fail
};
}
}
try
{
// response to client
client.SendMessage(response);
}
catch (ConnectionInterruptedException e)
{
log.Error("Connection with client brokes.", e);
}
// close connection
log.Info($"Client disconnected. ip {((IPEndPoint)client.tcpClient.Client.RemoteEndPoint).Address.ToString()}");
try
{
client.Close();
}
catch (ConnectionInterruptedException e)
{
log.Error(e);
}
}
/// <summary>
/// Try to login client. Send response about result.
/// </summary>
/// <param name="client">client.</param>
/// <param name="message">client's message.</param>
private void LoginClient(MpClient client, LoginRequestMessage message)
{
bool isLoggedIn = false;
Message response;
if (string.IsNullOrEmpty(message.Login) ||
string.IsNullOrEmpty(message.Password) ||
message.Login.Length > 20 ||
message.Password.Length > 30)
{
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Error
};
}
else if (usersHandler.GetOnlineUser(message.Login) != null)
{
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.AlreadyLogin
};
}
else
{
// client's id in db
if (DBoperations.Login(message.Login, message.Password, out int id))
{
log.Info($"Client logged in: {message.Login}");
// user is online
OnlineUser user = new OnlineUser(id, message.Login, client);
usersHandler.AddUser(user);
isLoggedIn = true;
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Success
};
}
else
{
response = new LoginRegisterResponseMessage {
Response = LoginRegisterResponse.Fail
};
}
}
try
{
// response to client
client.SendMessage(response);
}
catch (ConnectionInterruptedException e)
{
log.Error("Connection with client broke.", e);
}
// close connection with client if client not logged in
if (!isLoggedIn)
{
log.Info($"Client disconnected. ip {((IPEndPoint)client.tcpClient.Client.RemoteEndPoint).Address.ToString()}");
try
{
client.Close();
}
catch (ConnectionInterruptedException e)
{
log.Error(e);
}
}
}