public string GetCode(long counter)
{
_generator ??= Type switch
{
AuthenticatorType.Totp => new Totp(Secret, Period, Algorithm, Digits),
AuthenticatorType.Hotp => new Hotp(Secret, Algorithm, Digits),
AuthenticatorType.MobileOtp => new MobileOtp(Secret, Digits),
AuthenticatorType.SteamOtp => new SteamOtp(Secret),
_ => throw new ArgumentException("Unknown authenticator type.")
};
switch (Type.GetGenerationMethod())
{
case GenerationMethod.Time:
_code = _generator.Compute(counter);
break;
case GenerationMethod.Counter when _lastCounter == Counter:
return(_code);
case GenerationMethod.Counter:
{
_code = _generator.Compute(Counter);
_lastCounter = Counter;
break;
}
}
return(_code);
}
private string GenerateCode()
{
var code = CodeUtil.PadCode(_generator.Compute(), _digits);
Interlocked.Exchange(ref _secondsRemaining, _period - (int)DateTimeOffset.Now.ToUnixTimeSeconds() % _period);
return(code);
}
private void UpdateCode()
{
var code = _generator.Compute();
var spacesInserted = 0;
var groupSize = Math.Min(MaxCodeGroupSize, _digits / 2);
for (var i = 0; i < _digits; ++i)
{
if (i % groupSize == 0 && i > 0)
{
code = code.Insert(i + spacesInserted, " ");
spacesInserted++;
}
}
_codeTextView.Text = code;
_secondsRemaining = _period - (int)DateTimeOffset.Now.ToUnixTimeSeconds() % _period;
var progress = (int)Math.Floor((double)_progressBar.Max * _secondsRemaining / _period);
_progressBar.Progress = progress;
var animator = ObjectAnimator.OfInt(_progressBar, "progress", 0);
animator.SetDuration(_secondsRemaining * 1000);
animator.SetInterpolator(new LinearInterpolator());
animator.Start();
}
private void Refresh(object sender = null, ElapsedEventArgs args = null)
{
var now = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
var generationOffset = now - (now % _period);
var code = _generator.Compute(generationOffset);
var renewTime = generationOffset + _period;
var secondsRemaining = Math.Max(renewTime - now, 0);
RunOnUiThread(delegate
{
_codeTextView.Text = CodeUtil.PadCode(code, _digits, _codeGroupSize);
_authProgressLayout.StartTimer((_period - secondsRemaining) * 1000);
});
}
private void UpdateCode()
{
var code = CodeUtil.PadCode(_generator.Compute(), _digits);
_codeTextView.Text = code;
_secondsRemaining = _period - (int)DateTimeOffset.Now.ToUnixTimeSeconds() % _period;
var progress = (int)Math.Floor((double)_progressBar.Max * _secondsRemaining / _period);
_progressBar.Progress = progress;
var animator = ObjectAnimator.OfInt(_progressBar, "progress", 0);
animator.SetDuration(_secondsRemaining * 1000);
animator.SetInterpolator(new LinearInterpolator());
animator.Start();
}
public string GetCode()
{
_generator ??= Type switch
{
AuthenticatorType.Totp => new Totp(Secret, Period, Algorithm, Digits),
AuthenticatorType.Hotp => new Hotp(Secret, Algorithm, Digits, Counter),
AuthenticatorType.MobileOtp => new MobileOtp(Secret, Digits, Period),
AuthenticatorType.SteamOtp => new SteamOtp(Secret),
_ => throw new ArgumentException("Unknown authenticator type.")
};
switch (Type.GetGenerationMethod())
{
case GenerationMethod.Counter:
{
if (_lastCounter == Counter)
{
break;
}
var counterGenerator = (CounterBasedGenerator)_generator;
counterGenerator.Counter = Counter;
var oldCode = _code;
_code = counterGenerator.Compute();
_lastCounter = Counter;
if (oldCode != null || Counter == 1)
{
TimeRenew = counterGenerator.GetRenewTime();
}
break;
}
// Disregard milliseconds in case of timer inaccuracies
case GenerationMethod.Time when TimeRenew.ToUnixTimeSeconds() <= DateTimeOffset.UtcNow.ToUnixTimeSeconds():
_code = _generator.Compute();
TimeRenew = _generator.GetRenewTime();
break;
}
return(_code);
}
public string GetCode()
{
_generator ??= Type switch
{
AuthenticatorType.Totp => new Totp(Secret, Period, Algorithm, Digits),
AuthenticatorType.Hotp => new Hotp(Secret, Algorithm, Digits, Counter),
AuthenticatorType.MobileOtp => new MobileOtp(Secret, Digits, Period),
AuthenticatorType.SteamOtp => new SteamOtp(Secret),
_ => throw new ArgumentException("Unknown authenticator type.")
};
switch (Type.GetGenerationMethod())
{
case GenerationMethod.Counter:
{
if (_lastCounter == Counter)
{
break;
}
var counterGenerator = (CounterBasedGenerator)_generator;
counterGenerator.Counter = Counter;
var oldCode = _code;
_code = counterGenerator.Compute();
_lastCounter = Counter;
if (oldCode != null || Counter == 1)
{
TimeRenew = counterGenerator.GetRenewTime();
}
break;
}
case GenerationMethod.Time:
_code = _generator.Compute();
TimeRenew = _generator.GetRenewTime();
break;
}
return(_code);
}
private void Tick(object sender = null, ElapsedEventArgs e = null)
{
var now = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
if (_renewTime <= now)
{
var generationOffset = now - now % _period;
var code = _generator.Compute(generationOffset);
_renewTime = generationOffset + _period;
RunOnUiThread(delegate
{
_codeTextView.Text = CodeUtil.PadCode(code, _digits);
UpdateProgressBar(now);
});
}
else if (_animationScale == 0)
{
RunOnUiThread(delegate { UpdateProgressBar(now); });
}
}
