public override async Task ValidateClientAuthentication( OAuthValidateClientAuthenticationContext context) { string key; var userName = context.Parameters.Get("username"); var userProvider = new UserProvider(new Models.AlphaMedicContext.AlphaMedicContext()); var user = await userProvider.FindByEmailAsync(userName); var mAuth = await userProvider.FindMAuthByIdAsync(user.UserId); try { key = context.Parameters.Get("client"); if (key == null) { throw new Exception(); } } catch (Exception) { context.SetError( "invalid_grant", "type of client is undefined" ); context.Rejected(); return; } switch (key) { case "desktop": { if (mAuth == null || (bool)!mAuth.IsUseAuth) { await Task.FromResult(context.Validated()); return; } else { var mac = long.Parse(mAuth.MacAdress); var currentMinute = DateTime.Parse(DateTime.Now.ToString("g")).Ticks; var hash = this.hash(currentMinute / mac); if (hash == context.Parameters.Get("code")) { await Task.FromResult(context.Validated()); return; } else { context.SetError( "invalid_grant", "The authentification code is invalid" ); context.Rejected(); return; } } } case "android": { if (mAuth == null) { try { var macAdress = context.Parameters.Get("mac"); if (macAdress == null) { throw new Exception(); } await userProvider.AddMobileAuthentificatorAsync( new MobileAuthentificator { UserId = user.UserId, IsUseAuth = false, MacAdress = macAdress } ); await Task.FromResult(context.Validated()); return; } catch (Exception) { context.SetError( "invalid_grant", "client data is undefined" ); context.Rejected(); return; } } break; } await Task.FromResult(context.Validated()); } HttpResponseMessage result = client.GetAsync(urlParameters).Result; if (result.IsSuccessStatusCode) { TimeResponce time = result.Content.ReadAsAsync <TimeResponce>().Result; } //var currentMinute = DateTime.Parse(DateTime.Now.ToString("g")).Ticks; //var hash = this.hash(currentMinute); //if (hash == context.Parameters.First(x => x.Key == "code").Value[0]) //{ // await Task.FromResult(context.Validated()); //} //else //{ // context.SetError( // "invalid_grant", // "The user name or password is incorrect or user account is inactive." // ); // context.Rejected(); // return; //} await Task.FromResult(context.Validated()); }