public static bool TriggerExternalSignout(this LoggedOutInfoDto dto)
{
if (dto == null)
{
throw new ArgumentNullException(nameof(dto));
}
return(dto.ExternalAuthenticationScheme != null);
}
private async Task <LoggedOutInfoDto> BuildLoggedOutInfoDtoAsync(string logoutId)
{
// get context information (client name, post logout redirect URI and iframe for federated signout)
var logout = await this.interaction.GetLogoutContextAsync(logoutId);
var dto = new LoggedOutInfoDto
{
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 != IdentityServerConstants.LocalIdentityProvider)
{
var providerSupportsSignout = await HttpContext.GetSchemeSupportsSignOutAsync(idp);
if (providerSupportsSignout)
{
if (dto.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
dto.LogoutId = await this.interaction.CreateLogoutContextAsync();
}
dto.ExternalAuthenticationScheme = idp;
}
}
}
return(dto);
}