protected override async Task <AuthenticationTicket> AuthenticateCoreAsync() { var properties = new AuthenticationProperties(); try { string code = null; string state = null; var query = Request.Query; var values = query.GetValues("code"); if (values != null && values.Count == 1) { code = values[0]; } values = query.GetValues("state"); if (values != null && values.Count == 1) { state = values[0]; } properties = Options.StateDataFormat.Unprotect(state); if (properties == null) { return(null); } // OAuth2 10.12 CSRF if (!ValidateCorrelationId(properties, _logger)) { return(new AuthenticationTicket(null, properties)); } var requestPrefix = Request.Scheme + "://" + Request.Host; var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath; // Build up the body for the token request var body = new List <KeyValuePair <string, string> > { new KeyValuePair <string, string>("code", code), new KeyValuePair <string, string>("redirect_uri", redirectUri), new KeyValuePair <string, string>("client_id", Options.ClientId), new KeyValuePair <string, string>("client_secret", Options.ClientSecret), new KeyValuePair <string, string>("grant_type", "authorization_code") }; // Request the token var requestMessage = new HttpRequestMessage(HttpMethod.Post, TokenEndpoint); requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); requestMessage.Content = new FormUrlEncodedContent(body); var tokenResponse = await _httpClient.SendAsync(requestMessage, Request.CallCancelled); tokenResponse.EnsureSuccessStatusCode(); string content = await tokenResponse.Content.ReadAsStringAsync(); var response = JsonConvert.DeserializeObject <JObject>(content); string accessToken = response["access_token"].Value <string>(); var context = new TypeformAuthenticatedContext(Context, accessToken) { Identity = new ClaimsIdentity( Options.AuthenticationType, ClaimsIdentity.DefaultNameClaimType, ClaimsIdentity.DefaultRoleClaimType) }; if (!string.IsNullOrEmpty(context.UserId)) { context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.UserId, XmlSchemaString, Options.AuthenticationType)); } context.Properties = properties; await Options.Provider.Authenticated(context); return(new AuthenticationTicket(context.Identity, context.Properties)); } catch (Exception ex) { _logger.WriteError(ex.Message, ex); } return(new AuthenticationTicket(null, properties)); }
/// <summary> /// Invoked whenever Typeform successfully authenticates a user /// </summary> /// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param> /// <returns>A <see cref="Task"/> representing the completed operation.</returns> public virtual Task Authenticated(TypeformAuthenticatedContext context) { return(OnAuthenticated(context)); }