/// <summary>
/// Checks if passed username is already used by another user
/// </summary>
/// <param name="username">Users username passed from register form</param>
/// <returns>True - if username is not used,
/// False - if username is used</returns>
public static bool IsUsernameNotTaken(string username)
{
List <User> usersList = IOClass.ReadUsersList();
foreach (User user in usersList)
{
if (user.GetUsername().Equals(username))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Checks user's credentials and allows to log in
/// </summary>
/// <param name="login"></param>
/// <param name="password"></param>
/// <returns>True - if credentials were ok,
/// False - if credentials were wrong</returns>
public static bool Login(string login, string password)
{
List <User> usersList = IOClass.ReadUsersList();
string loginHash = DataCryptography.SHA512(login);
string passwordHash = DataCryptography.SHA512(password);
foreach (User user in usersList)
{
if (user.GetUsername().Equals(loginHash))
{
if (user.GetPassword().Equals(passwordHash))
{
return(true);
}
}
}
return(false);
}
/*
* Stworzyć lepszą walidację zaznaczonych elementów listboxów by operacje nie były dozwolone na obiektach null, które powodują NullReferenceException
*/
#region Constructor
/// <summary>
/// Sets default values and starts a new task which checks connected devices
/// </summary>
public MainWindow(string username)
{
InitializeComponent();
DidUserLoggedUnauthorized = true;
DeviceListChanged = false;
deleteTrustedDeviceBtn.IsEnabled = false;
labelUsername.Content = "Hello " + username;
RsaPrivateKey = string.Empty;
AuthorizationStatus = false;
this.Username = username;
List <User> usersList = IOClass.ReadUsersList();
string hashedUsername = DataCryptography.SHA512(username);
bindFilesListBox();
bindFoldersListBox();
foreach (User user in usersList)
{
if (user.GetUsername().Equals(hashedUsername))
{
LoggedUser = user;
}
}
labelSecurityQuestion.Content = LoggedUser.GetQuestion();
this.UserFilesFilepath = @"C:\PAAK\" + username + @"\files.json";
this.UserFoldersFilepath = @"C:\PAAK\" + username + @"\folders.json";
this.UserKeyDataFilepath = @"C:\PAAK\" + username + @"\data.json";
this.UserEncryptedFilesFilepath = @"C:\PAAK\" + username + @"\encryptedFiles.json";
var uiSyncContext = SynchronizationContext.Current;
var loopTask = Task.Run(() =>
{
while (true)
{
Task.Delay(1000);
UpdateConnectedDevices();
if (DeviceListChanged)
{
if (ConnectedTrustedDevices != null)
{
if (ConnectedTrustedDevices.Count.Equals(1))
{
AuthorizationStatus = true;
if (RsaPrivateKey.Equals(string.Empty))
{
RsaPrivateKey = IOClass.ReadPrivateKeyFromDeviceToString(ConnectedTrustedDevices[0].Path);
}
}
else
{
AuthorizationStatus = false;
}
}
uiSyncContext.Post((s) =>
{
UpdateDevicesStatus();
}, null);
}
}
});
}
