protected internal virtual bool IsValidPageType(Type type)
{
IEnumerable <Type> types = new List <Type> {
type
};
return(types.WithAttribute <PageTypeAttribute>().Count() > 0 && !type.IsAbstract);
}
/// <summary>
/// Searches HTML for the HEAD META tags that describe OpenID provider services.
/// </summary>
/// <param name="claimedIdentifier">The final URL that provided this HTML document.
/// This may not be the same as (this) userSuppliedIdentifier if the
/// userSuppliedIdentifier pointed to a 301 Redirect.</param>
/// <param name="userSuppliedIdentifier">The user supplied identifier.</param>
/// <param name="html">The HTML that was downloaded and should be searched.</param>
/// <returns>
/// A sequence of any discovered ServiceEndpoints.
/// </returns>
private static IEnumerable <IdentifierDiscoveryResult> DiscoverFromHtml(Uri claimedIdentifier, UriIdentifier userSuppliedIdentifier, string html)
{
var linkTags = new List <HtmlLink>(HtmlParser.HeadTags <HtmlLink>(html));
foreach (var protocol in Protocol.AllPracticalVersions)
{
// rel attributes are supposed to be interpreted with case INsensitivity,
// and is a space-delimited list of values. (http://www.htmlhelp.com/reference/html40/values.html#linktypes)
var serverLinkTag = linkTags.WithAttribute("rel").FirstOrDefault(tag => Regex.IsMatch(tag.Attributes["rel"], @"\b" + Regex.Escape(protocol.HtmlDiscoveryProviderKey) + @"\b", RegexOptions.IgnoreCase));
if (serverLinkTag == null)
{
continue;
}
Uri providerEndpoint = null;
if (Uri.TryCreate(serverLinkTag.Href, UriKind.Absolute, out providerEndpoint))
{
// See if a LocalId tag of the discovered version exists
Identifier providerLocalIdentifier = null;
var delegateLinkTag = linkTags.WithAttribute("rel").FirstOrDefault(tag => Regex.IsMatch(tag.Attributes["rel"], @"\b" + Regex.Escape(protocol.HtmlDiscoveryLocalIdKey) + @"\b", RegexOptions.IgnoreCase));
if (delegateLinkTag != null)
{
if (Identifier.IsValid(delegateLinkTag.Href))
{
providerLocalIdentifier = delegateLinkTag.Href;
}
else
{
Logger.Yadis.WarnFormat("Skipping endpoint data because local id is badly formed ({0}).", delegateLinkTag.Href);
continue; // skip to next version
}
}
// Choose the TypeURI to match the OpenID version detected.
string[] typeURIs = { protocol.ClaimedIdentifierServiceTypeURI };
yield return(IdentifierDiscoveryResult.CreateForClaimedIdentifier(
claimedIdentifier,
userSuppliedIdentifier,
providerLocalIdentifier,
new ProviderEndpointDescription(providerEndpoint, typeURIs),
(int?)null,
(int?)null));
}
}
}
/// <summary>
/// Searches HTML for the HEAD META tags that describe OpenID provider services.
/// </summary>
/// <param name="claimedIdentifier">The final URL that provided this HTML document.
/// This may not be the same as (this) userSuppliedIdentifier if the
/// userSuppliedIdentifier pointed to a 301 Redirect.</param>
/// <param name="userSuppliedIdentifier">The user supplied identifier.</param>
/// <param name="html">The HTML that was downloaded and should be searched.</param>
/// <returns>
/// A sequence of any discovered ServiceEndpoints.
/// </returns>
private static IEnumerable<IdentifierDiscoveryResult> DiscoverFromHtml(Uri claimedIdentifier, UriIdentifier userSuppliedIdentifier, string html) {
var linkTags = new List<HtmlLink>(HtmlParser.HeadTags<HtmlLink>(html));
foreach (var protocol in Protocol.AllPracticalVersions) {
// rel attributes are supposed to be interpreted with case INsensitivity,
// and is a space-delimited list of values. (http://www.htmlhelp.com/reference/html40/values.html#linktypes)
var serverLinkTag = linkTags.WithAttribute("rel").FirstOrDefault(tag => Regex.IsMatch(tag.Attributes["rel"], @"\b" + Regex.Escape(protocol.HtmlDiscoveryProviderKey) + @"\b", RegexOptions.IgnoreCase));
if (serverLinkTag == null) {
continue;
}
Uri providerEndpoint = null;
if (Uri.TryCreate(serverLinkTag.Href, UriKind.Absolute, out providerEndpoint)) {
// See if a LocalId tag of the discovered version exists
Identifier providerLocalIdentifier = null;
var delegateLinkTag = linkTags.WithAttribute("rel").FirstOrDefault(tag => Regex.IsMatch(tag.Attributes["rel"], @"\b" + Regex.Escape(protocol.HtmlDiscoveryLocalIdKey) + @"\b", RegexOptions.IgnoreCase));
if (delegateLinkTag != null) {
if (Identifier.IsValid(delegateLinkTag.Href)) {
providerLocalIdentifier = delegateLinkTag.Href;
} else {
Logger.Yadis.WarnFormat("Skipping endpoint data because local id is badly formed ({0}).", delegateLinkTag.Href);
continue; // skip to next version
}
}
// Choose the TypeURI to match the OpenID version detected.
string[] typeURIs = { protocol.ClaimedIdentifierServiceTypeURI };
yield return IdentifierDiscoveryResult.CreateForClaimedIdentifier(
claimedIdentifier,
userSuppliedIdentifier,
providerLocalIdentifier,
new ProviderEndpointDescription(providerEndpoint, typeURIs),
(int?)null,
(int?)null);
}
}
}
protected internal virtual bool IsValidPageType(Type type)
{
IEnumerable<Type> types = new List<Type> { type };
return types.WithAttribute<PageTypeAttribute>().Count() > 0 && !type.IsAbstract;
}
