protected override async Task <bool> HandleUnauthorizedAsync(ChallengeContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var properties = new AuthenticationProperties(context.Properties);
if (string.IsNullOrEmpty(properties.RedirectUri))
{
properties.RedirectUri = CurrentUri;
}
// If CallbackConfirmed is false, this will throw
var requestToken = await ObtainRequestTokenAsync(BuildRedirectUri(Options.CallbackPath), properties);
var twitterAuthenticationEndpoint = AuthenticationEndpoint + requestToken.Token;
var cookieOptions = new CookieOptions
{
HttpOnly = true,
Secure = Request.IsHttps,
Expires = Options.SystemClock.UtcNow.Add(Options.RemoteAuthenticationTimeout),
};
Response.Cookies.Append(StateCookie, Options.StateDataFormat.Protect(requestToken), cookieOptions);
var redirectContext = new TwitterRedirectToAuthorizationEndpointContext(
Context, Options,
properties, twitterAuthenticationEndpoint);
await Options.Events.RedirectToAuthorizationEndpoint(redirectContext);
return(true);
}
/// <summary> /// Called when a Challenge causes a redirect to authorize endpoint in the Twitter middleware /// </summary> /// <param name="context">Contains redirect URI and <see cref="Http.Authentication.AuthenticationProperties"/> of the challenge </param> public virtual Task RedirectToAuthorizationEndpoint(TwitterRedirectToAuthorizationEndpointContext context) => OnRedirectToAuthorizationEndpoint(context);
internal static Task RedirectToAuthorizationEndpoint(TwitterRedirectToAuthorizationEndpointContext context)
{
context.Response.Redirect(context.RedirectUri + "&custom_redirect_uri=custom");
return Task.FromResult(0);
}
/// <summary> /// Called when a Challenge causes a redirect to authorize endpoint in the Twitter middleware /// </summary> /// <param name="context">Contains redirect URI and <see cref="Http.Authentication.AuthenticationProperties"/> of the challenge </param> public virtual Task RedirectToAuthorizationEndpoint(TwitterRedirectToAuthorizationEndpointContext context) => OnRedirectToAuthorizationEndpoint(context);
