private void loginButton_Click(object sender, RoutedEventArgs e)
{
if (user == null)
{
// Login
LoginObject loginObeject = new LoginObject(loginUsernameTextBox.Text, loginPasswordTextBox.Password);
Server.Models.Client loginClient = RequestsManager.Login(clientObject.stream, loginObeject.toJsonObject());
if (loginClient != null)
{
user = loginClient;
TransactionsTab.Visibility = Visibility.Visible;
checkAll.Visibility = Visibility.Visible;
loginButton.Content = "SignOut";
loginUsernameTextBox.Text = "";
loginPasswordTextBox.Password = "";
}
else
{
checkAll.Visibility = Visibility.Hidden;
TransactionsTab.Visibility = Visibility.Hidden;
}
}
else
{
// Sign out
TransactionsTab.Visibility = Visibility.Hidden;
checkAll.Visibility = Visibility.Hidden;
loginButton.Content = "Login";
loginUsernameTextBox.Text = "";
loginPasswordTextBox.Password = "";
}
}
public static Server.Models.Client Login(AdvanceStream stream, string loginData)
{
// To generate private key for RSA if not exist
RSA rsa = new RSA(LoginObject.newLoginObject(loginData).username);
KeyManager.generateRSAPublicKey(rsa.rsaSP);
KeyManager.generateRSAPrivateKey(rsa.rsaSP);
stream.Write("1");
stream.Write(KeyManager.RSAPublicKey);
AES aes = AES.getInstance();
byte[] msg = Encoding.UTF8.GetBytes(loginData);
byte[] EncreptedLoginData = rsa.encrypte(msg, KeyManager.serverRSAPublicKey);
MainWindow.instance.Log("Login Data", loginData);
MainWindow.instance.Log("Encrypted Login Data", Encoding.UTF8.GetString(EncreptedLoginData));
stream.Write(EncreptedLoginData);
string response = stream.ReadString();
if (response.Equals("0"))
{
//no user
MainWindow.instance.Log("No such user");
MainWindow.instance.Log();
return(null);
}
else if (response.Equals("1"))
{
//wrong password
MainWindow.instance.Log("Wrong Password");
MainWindow.instance.Log();
return(null);
}
else
{
//ok
response = stream.ReadString();
Server.Models.Client loginClient = Server.Models.Client.newClientObject(response);
MainWindow.instance.Log(response);
byte[] inStream = stream.ReadBytes();
byte[] decrypKey = rsa.decrypt(inStream, KeyManager.RSAPrivateKey);
MainWindow.instance.Log("Encrypted AES Key", Convert.ToBase64String(inStream, 0, inStream.Length));
KeyManager.serverAESPublicKey = Convert.ToBase64String(decrypKey, 0, decrypKey.Length);
MainWindow.instance.Log("AES Key", KeyManager.serverAESPublicKey);
return(loginClient);
}
}
public static Boolean DoTransaction(string sender, string reciver, string amount)
{
int senderID = int.Parse(sender);
int reciverID = int.Parse(reciver);
DBContext db = getInstace();
int transmitted;
try
{
transmitted = Int32.Parse(amount);
}
catch
{
transmitted = 0;
}
var FromQuery = from t in db.Clients where t.Id == senderID select t;
var ToQuery = from t in db.Clients where t.Id == reciverID select t;
int senderBalance = 0;
int ReciverBalance = 0;
foreach (Server.Models.Client clinet in FromQuery)
{
senderBalance = clinet.Balance;
}
foreach (Server.Models.Client clinet in FromQuery)
{
ReciverBalance = clinet.Balance;
}
if (senderBalance < transmitted)
{
return(false);
}
else
{
Server.Models.Client sendeUser = db.Clients.First(e => e.Id.Equals(senderID));
Server.Models.Client reciverUser = db.Clients.First(e => e.Id.Equals(reciverID));
reciverUser.Balance += transmitted;
sendeUser.Balance -= transmitted;
db.SaveChanges();
Transaction t = new Transaction();
t.Amount = transmitted;
t.ReciverId = reciverUser.Id;
t.SenderId = sendeUser.Id;
db.Transactions.Add(t);
db.SaveChanges();
return(true);
}
}