private async Task <bool> InvokeReplyPathAsync()
{
if (Options.CallbackPath.HasValue && Options.CallbackPath == Request.Path)
{
// TODO: error responses
AuthenticationTicket ticket = await AuthenticateAsync();
if (ticket == null)
{
_logger.WriteWarning("Invalid return state, unable to redirect.");
Response.StatusCode = 500;
return(true);
}
var context = new FacebookReturnEndpointContext(Context, ticket);
context.SignInAsAuthenticationType = Options.SignInAsAuthenticationType;
context.RedirectUri = ticket.Properties.RedirectUri;
await Options.Provider.ReturnEndpoint(context);
if (context.SignInAsAuthenticationType != null &&
context.Identity != null)
{
ClaimsIdentity grantIdentity = context.Identity;
if (!string.Equals(grantIdentity.AuthenticationType, context.SignInAsAuthenticationType, StringComparison.Ordinal))
{
grantIdentity = new ClaimsIdentity(grantIdentity.Claims, context.SignInAsAuthenticationType, grantIdentity.NameClaimType, grantIdentity.RoleClaimType);
}
Context.Authentication.SignIn(context.Properties, grantIdentity);
}
if (!context.IsRequestCompleted && context.RedirectUri != null)
{
string redirectUri = context.RedirectUri;
if (context.Identity == null)
{
// add a redirect hint that sign-in failed in some way
redirectUri = WebUtilities.AddQueryString(redirectUri, "error", "access_denied");
}
Response.Redirect(redirectUri);
context.RequestCompleted();
}
return(context.IsRequestCompleted);
}
return(false);
}
/// <summary>
/// Invoked prior to the <see cref="System.Security.Claims.ClaimsIdentity"/> being saved in a local cookie and the browser being redirected to the originally requested URL.
/// </summary>
/// <param name="context"></param>
/// <returns>A <see cref="Task"/> representing the completed operation.</returns>
public virtual Task ReturnEndpoint(FacebookReturnEndpointContext context)
{
return(OnReturnEndpoint(context));
}