XrdsDocument downloadXrds() {
var xrdsResponse = UntrustedWebRequest.Request(XrdsUrl);
XrdsDocument doc = new XrdsDocument(XmlReader.Create(xrdsResponse.ResponseStream));
if (!doc.IsXrdResolutionSuccessful) {
throw new OpenIdException(Strings.XriResolutionFailed);
}
return doc;
}
public XrdElement(XPathNavigator xrdElement, XrdsDocument parent) :
base(xrdElement, parent)
{
}
public XrdElement(XPathNavigator xrdElement, XrdsDocument parent)
: base(xrdElement, parent)
{
}
internal override IEnumerable<ServiceEndpoint> Discover()
{
List<ServiceEndpoint> endpoints = new List<ServiceEndpoint>();
// Attempt YADIS discovery
DiscoveryResult yadisResult = Yadis.Yadis.Discover(this, IsDiscoverySecureEndToEnd);
if (yadisResult != null) {
if (yadisResult.IsXrds) {
XrdsDocument xrds = new XrdsDocument(yadisResult.ResponseText);
var xrdsEndpoints = xrds.CreateServiceEndpoints(yadisResult.NormalizedUri);
// Filter out insecure endpoints if high security is required.
if (IsDiscoverySecureEndToEnd) {
xrdsEndpoints = Util.Where(xrdsEndpoints, se => se.IsSecure);
}
endpoints.AddRange(xrdsEndpoints);
}
// Failing YADIS discovery of an XRDS document, we try HTML discovery.
if (endpoints.Count == 0) {
ServiceEndpoint ep = DiscoverFromHtml(yadisResult.NormalizedUri, yadisResult.ResponseText);
if (ep != null && (!IsDiscoverySecureEndToEnd || ep.IsSecure)) {
endpoints.Add(ep);
}
}
}
return endpoints;
}
/// <summary>
/// Searches for an XRDS document at the realm URL, and if found, searches
/// for a description of a relying party endpoints (OpenId login pages).
/// </summary>
/// <param name="allowRedirects">
/// Whether redirects may be followed when discovering the Realm.
/// This may be true when creating an unsolicited assertion, but must be
/// false when performing return URL verification per 2.0 spec section 9.2.1.
/// </param>
/// <returns>The details of the endpoints if found, otherwise null.</returns>
internal IEnumerable<DotNetOpenId.Provider.RelyingPartyReceivingEndpoint> Discover(bool allowRedirects)
{
// Attempt YADIS discovery
DiscoveryResult yadisResult = Yadis.Yadis.Discover(UriWithWildcardChangedToWww, false);
if (yadisResult != null) {
if (!allowRedirects && yadisResult.NormalizedUri != yadisResult.RequestUri) {
// Redirect occurred when it was not allowed.
throw new OpenIdException(string.Format(CultureInfo.CurrentCulture,
Strings.RealmCausedRedirectUponDiscovery, yadisResult.RequestUri));
}
if (yadisResult.IsXrds) {
try {
XrdsDocument xrds = new XrdsDocument(yadisResult.ResponseText);
return xrds.FindRelyingPartyReceivingEndpoints();
} catch (XmlException ex) {
throw new OpenIdException(Strings.InvalidXRDSDocument, ex);
}
}
}
return new RelyingPartyReceivingEndpoint[0];
}
internal override IEnumerable<ServiceEndpoint> Discover() {
List<ServiceEndpoint> endpoints = new List<ServiceEndpoint>();
// Attempt YADIS discovery
DiscoveryResult yadisResult = Yadis.Yadis.Discover(this, IsDiscoverySecureEndToEnd);
if (yadisResult != null) {
if (yadisResult.IsXrds) {
XrdsDocument xrds = new XrdsDocument(yadisResult.ResponseText);
var xrdsEndpoints = xrds.CreateServiceEndpoints(yadisResult.NormalizedUri);
// Filter out insecure endpoints if high security is required.
if (IsDiscoverySecureEndToEnd) {
xrdsEndpoints = Util.Where(xrdsEndpoints, se => se.IsSecure);
}
endpoints.AddRange(xrdsEndpoints);
}
// Failing YADIS discovery of an XRDS document, we try HTML discovery.
if (endpoints.Count == 0) {
ServiceEndpoint ep = DiscoverFromHtml(yadisResult.NormalizedUri, yadisResult.ResponseText);
if (ep != null) {
Logger.Debug("HTML discovery found a service endpoint.");
Logger.Debug(ep);
if (!IsDiscoverySecureEndToEnd || ep.IsSecure) {
endpoints.Add(ep);
} else {
Logger.Info("Skipping HTML discovered endpoint because it is not secure.");
}
} else {
Logger.Debug("HTML discovery failed to find any endpoints.");
}
} else {
Logger.Debug("Skipping HTML discovery because XRDS contained service endpoints.");
}
}
return endpoints;
}
