/// <summary>
/// Finds the icons the relying party wants an OP to display as part of authentication,
/// per the UI extension spec.
/// </summary>
/// <param name="xrds">The XrdsDocument to search.</param>
/// <returns>A sequence of the icon URLs in preferred order.</returns>
internal static IEnumerable <Uri> FindRelyingPartyIcons(this XrdsDocument xrds)
{
return(from xrd in xrds.XrdElements
from service in xrd.OpenIdRelyingPartyIcons
from uri in service.UriElements
select uri.Uri);
}
/// <summary>
/// Enumerates the XRDS service elements that describe OpenID Relying Party return_to URLs
/// that can receive authentication assertions.
/// </summary>
/// <param name="xrds">The XrdsDocument instance to use in this process.</param>
/// <returns>A sequence of service elements.</returns>
private static IEnumerable <ServiceElement> FindReturnToServices(this XrdsDocument xrds)
{
return(from xrd in xrds.XrdElements
from service in xrd.OpenIdRelyingPartyReturnToServices
select service);
}
/// <summary>
/// Finds the Relying Party return_to receiving endpoints.
/// </summary>
/// <param name="xrds">The XrdsDocument instance to use in this process.</param>
/// <returns>A sequence of Relying Party descriptors for the return_to endpoints.</returns>
/// <remarks>
/// This is useful for Providers to send unsolicited assertions to Relying Parties,
/// or for Provider's to perform RP discovery/verification as part of authentication.
/// </remarks>
public static IEnumerable <RelyingPartyEndpointDescription> FindRelyingPartyReceivingEndpoints(this XrdsDocument xrds)
{
return(from service in xrds.FindReturnToServices()
from uri in service.UriElements
select new RelyingPartyEndpointDescription(uri.Uri, service.TypeElementUris));
}
/// <summary>
/// Initializes a new instance of the <see cref="XrdElement"/> class.
/// </summary>
/// <param name="xrdElement">The XRD element.</param>
/// <param name="parent">The parent.</param>
public XrdElement(XPathNavigator xrdElement, XrdsDocument parent) :
base(xrdElement, parent)
{
}