/// <summary>
/// Obtains the next reader service during the discovery process
/// being managed by a session variable tracking cirlce of trusts
/// currently being checked.
/// </summary>
/// <param name="serviceProviderUtility">ServiceProviderUtility containing circle-of-trust information.</param>
/// <param name="context">HttpContext containing session, request, and response objects.</param>
/// <returns>
/// Returns the URL found in the currently checked circle-of-trust file if specified, null otherwise.
/// </returns>
public static Uri GetReaderServiceUrl(ServiceProviderUtility serviceProviderUtility, HttpContext context)
{
HttpSessionState session = context.Session;
Uri readerSvcUrl = null;
ArrayList cotList = (ArrayList)session[IdentityProviderDiscoveryUtils.CommonDomainDiscoverySessionAttribute];
if (cotList == null)
{
// Obtain the list of currently tracked circle-of-trusts with
// reader service if not already known.
cotList = new ArrayList();
foreach (string cotName in serviceProviderUtility.CircleOfTrusts.Keys)
{
CircleOfTrust cot = (CircleOfTrust)serviceProviderUtility.CircleOfTrusts[cotName];
if (cot.ReaderServiceUrl != null)
{
cotList.Add(cotName);
}
}
}
IEnumerator enumerator = cotList.GetEnumerator();
if (enumerator.MoveNext())
{
// Try the first service in the list
string cotName = (string)enumerator.Current;
cotList.Remove(cotName);
session[IdentityProviderDiscoveryUtils.CommonDomainDiscoverySessionAttribute] = cotList;
CircleOfTrust cot = (CircleOfTrust)serviceProviderUtility.CircleOfTrusts[cotName];
readerSvcUrl = new Uri(cot.ReaderServiceUrl.AbsoluteUri);
}
return(readerSvcUrl);
}
/// <summary>
/// Internal method to load all configuration information for all
/// circle of trusts found in the home folder.
/// </summary>
private void InitializeCircleOfTrusts()
{
DirectoryInfo dirInfo = new DirectoryInfo(this.homeFolder);
FileInfo[] files = dirInfo.GetFiles("fedlet*.cot");
foreach (FileInfo file in files)
{
CircleOfTrust cot = new CircleOfTrust(file.FullName);
string key = cot.Attributes["cot-name"];
this.CircleOfTrusts.Add(key, cot);
}
if (this.CircleOfTrusts.Count <= 0)
{
throw new ServiceProviderUtilityException(Resources.ServiceProviderUtiltyCircleOfTrustsNotFound);
}
}
