public async Task <bool> GetLoginValidityAsync()
{
Settings.Settings legacySettings = Settings.Settings.Instance;
DsrProfile dsr = await new LoginController().GetByDsrPhoneNumberAsync(legacySettings.DsrPhone);
return(this.LoginValid(
dsr.LastOnlineLogin,
DateTime.Now,
legacySettings.ExpirePeriodInDays));
}
protected async Task LoginOffline()
{
// grab the user from local resource
Dsr = await LoginController.GetByDsrPhoneNumberAsync(Settings.DsrPhone);
// no local profile present
if (Dsr == null)
{
ShowLoginResultMessage(Resource.String.no_offline_profile);
this._canLoginOffline = false;
return;
}
// profile exists, continue
// check whether it has been too long since the user logged in online
if (!LoginService.LoginValid(Dsr.LastOnlineLogin, DateTime.Today, Settings.ExpirePeriodInDays))
{
ShowLoginResultMessage(string.Format(GetString(Resource.String.logging_in_too_long), Settings.ExpirePeriodInDays));
this._canLoginOffline = false;
return;
}
// check the amount of times logged in offline
if (Dsr.OfflineLoginAttempts >= Settings.OfflineLoginAttempts)
{
ShowLoginResultMessage(string.Format(GetString(Resource.String.logging_in_offline_expire), Dsr.OfflineLoginAttempts));
this._canLoginOffline = false;
return;
}
// we're still ok, check the hash
IHashing hashing = Resolver.Instance.Get <IHashing>();
string hash = hashing.HashPassword(Settings.DsrPhone, EnteredPin);
if (hash != Dsr.PinHash)
{
Dsr.OfflineLoginAttempts++;
await LoginController.SaveAsync(Dsr);
ShowLoginResultMessage(Resource.String.wrong_pin);
return;
}
// seem to be right PIN, so continue
Dsr.LastOfflineLogin = DateTime.Now;
Dsr.OfflineLoginAttempts = 0;
await LoginController.SaveAsync(Dsr);
ContinueToWelcome();
}
private async Task ProceedWithLogin(LoginResponse loginResponse)
{
// check if local profile exists
this.Dsr = await this.LoginController.GetDsr(loginResponse.Id);
// create new profile
if (this.Dsr == null)
{
this.Dsr = new DsrProfile
{
DsrPhone = Settings.Instance.DsrPhone,
FirstName = loginResponse.FirstName,
LastName = loginResponse.LastName,
LastOfflineLogin = loginResponse.LastOfflineLogin,
LastOnlineLogin = loginResponse.LastOnlineLogin,
OfflineLoginAttempts = loginResponse.OfflineLoginAttempts,
PinHash = loginResponse.PinHash,
Id = loginResponse.Id
};
}
else
{
// update existing profile
this.Dsr.DsrPhone = Settings.Instance.DsrPhone;
this.Dsr.FirstName = loginResponse.FirstName;
this.Dsr.LastName = loginResponse.LastName;
this.Dsr.PinHash = loginResponse.PinHash;
this.Dsr.Id = loginResponse.Id;
}
// when dsr is present we have valid user
this.CreateUserSession();
this.Dsr.LastOnlineLogin = DateTime.Now;
this.Dsr.LastOfflineLogin = DateTime.Now;
this.Dsr.OfflineLoginAttempts = 0;
await this.LoginController.SaveAsync(this.Dsr);
// fetch and update settings via OTA
var serverTimestamp = Settings.Instance.ServerTimeStamp;
string carrier = this.OperatorName;
var requestParams = string.Format("?carrier={0}&servertimestamp={1}", carrier, serverTimestamp);
await this.RemoteOtaService.FetchOtaSettingsAsync(requestParams);
// continue to new screen
this.ContinueToWelcome();
}
