1 files changed, 37 insertions, 0 deletions
diff --git a/src/OpenID/OpenIdProviderMvc/Models/User.cs b/src/OpenID/OpenIdProviderMvc/Models/User.cs
new file mode 100644
index 0000000..c89d74d
--- /dev/null
+++ b/src/OpenID/OpenIdProviderMvc/Models/User.cs
@@ -0,0 +1,37 @@
+namespace OpenIdProviderMvc.Models {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text.RegularExpressions;
+	using System.Web;
+	using System.Web.Routing;
+	using OpenIdProviderMvc.Code;
+
+	internal class User {
+		internal static Uri ClaimedIdentifierBaseUri {
+			get { return Util.GetAppPathRootedUri("user/"); }
+		}
+
+		internal static Uri GetClaimedIdentifierForUser(string username) {
+			if (string.IsNullOrEmpty(username)) {
+				throw new ArgumentNullException("username");
+			}
+
+			return new Uri(ClaimedIdentifierBaseUri, username.ToLowerInvariant());
+		}
+
+		internal static string GetUserFromClaimedIdentifier(Uri claimedIdentifier) {
+			Regex regex = new Regex(@"/user/([^/\?]+)");
+			Match m = regex.Match(claimedIdentifier.AbsoluteUri);
+			if (!m.Success) {
+				throw new ArgumentException();
+			}
+
+			return m.Groups[1].Value;
+		}
+
+		internal static Uri GetNormalizedClaimedIdentifier(Uri uri) {
+			return GetClaimedIdentifierForUser(GetUserFromClaimedIdentifier(uri));
+		}
+	}
+}