/// <summary>
/// Accepts a claimed identifier and returns
/// the normalized identifier, and an end-point URL.
/// </summary>
/// <param name="openid">String containing claimed identifier.</param>
/// <returns>A populated NormalizationEntry object, or null if the identitifer cannot
/// be processed by this plug-in.</returns>
public NormalizationEntry ProcessId(string openid)
{
NormalizationEntry ne = new NormalizationEntry();
if (openid.StartsWith("http://xri.net/", StringComparison.OrdinalIgnoreCase))
{
openid = openid.Substring(15);
}
if (openid.StartsWith("https://xri.net/", StringComparison.OrdinalIgnoreCase))
{
openid = openid.Substring(16);
}
foreach (string prefix in Prefixes)
{
if (openid.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
{
if (prefix.Length == 1)
{
ne.FriendlyId = openid;
ne.NormalizedId = openid;
ne.DiscoveryUrl = new Uri("https://xri.net/" + openid);
}
else
{
string a = openid;
a = a.Substring(prefix.Length, a.Length - prefix.Length);
ne.FriendlyId = a;
ne.NormalizedId = a;
ne.DiscoveryUrl = new Uri("https://xri.net/" + a);
}
}
}
if (ne.DiscoveryUrl == null)
{
return null;
}
return ne;
}
/// <summary>
/// Processes a claimed identifier and returns a normalized ID and an endpoint URL.
/// </summary>
/// <param name="openid">Claimed identifier to process.</param>
/// <returns>A populated NormalizationEntry object, or null if the identitifer cannot
/// be processed by this plug-in.</returns>
public NormalizationEntry ProcessId(string openid)
{
NormalizationEntry ne = new NormalizationEntry();
if (openid.StartsWith("https://xri.net/", StringComparison.OrdinalIgnoreCase)
|| openid.StartsWith("http://xri.net/", StringComparison.OrdinalIgnoreCase))
{
return null;
}
foreach (string prefix in _Prefixes)
{
if (openid.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
{
string a = openid;
a = a.Substring(prefix.Length, a.Length - prefix.Length);
ne.FriendlyId = a.Trim('/');
ne.DiscoveryUrl = new Uri(openid);
ne.NormalizedId = ne.DiscoveryUrl.AbsoluteUri;
return ne;
}
}
try
{
ne.FriendlyId = openid.Trim('/');
ne.DiscoveryUrl = new Uri("http://" + openid);
ne.NormalizedId = ne.DiscoveryUrl.AbsoluteUri;
}
catch (UriFormatException)
{
return null;
}
return ne;
}
/// <summary>
/// Converts a supplied OpenID into two distinct entities - a normalized name and a URI
/// </summary>
/// <param name="openid">OpenID to normalize</param>
/// <param name="plugins">IDiscovery plugins to use to process the OpenID</param>
/// <returns>A populated NormalizationEntry object.</returns>
internal static NormalizationEntry Normalize(string openid, IEnumerable<IDiscovery> plugins)
{
if (String.IsNullOrEmpty(openid)) { throw new ArgumentNullException("openid"); }
if (plugins == null) { throw new ArgumentNullException("plugins"); }
NormalizationEntry result = new NormalizationEntry();
// Loop through the registered Discovery Plugins
// and attempt to get a processed ID.
foreach (IDiscovery disc in plugins)
{
result = disc.ProcessId(openid);
if (result != null) { break; }
}
return result;
}