private async Task <LoggedOutViewModel> BuildLoggedOutViewModelAsync(string logoutId)
{
// get context information (client name, post logout redirect URI and iframe for federated signout)
var logout = await _interaction.GetLogoutContextAsync(logoutId);
var vm = new LoggedOutViewModel
{
AutomaticRedirectAfterSignOut = AccountOptions.AutomaticRedirectAfterSignOut,
PostLogoutRedirectUri = logout?.PostLogoutRedirectUri,
ClientName = string.IsNullOrEmpty(logout?.ClientName) ? logout?.ClientId : logout?.ClientName,
SignOutIframeUrl = logout?.SignOutIFrameUrl,
LogoutId = logoutId
};
if (User?.Identity.IsAuthenticated == true)
{
var idp = User.FindFirst(JwtClaimTypes.IdentityProvider)?.Value;
if (idp != null && idp != IdentityServer4.IdentityServerConstants.LocalIdentityProvider)
{
var providerSupportsSignout = await HttpContext.GetSchemeSupportsSignOutAsync(idp);
if (providerSupportsSignout)
{
if (vm.LogoutId == null)
{
// if there's no current logout context, we need to create one
// this captures necessary info from the current logged in user
// before we signout and redirect away to the external IdP for signout
vm.LogoutId = await _interaction.CreateLogoutContextAsync();
}
vm.ExternalAuthenticationScheme = idp;
}
}
}
return(vm);
}
//[ValidateAntiForgeryToken]
public ActionResult CacheLoggedOut(LoggedOutViewModel m)
{
return(View(m));
}