1 files changed, 26 insertions, 0 deletions
diff --git a/samples/OAuthServiceProvider/App_Code/Utilities.cs b/samples/OAuthServiceProvider/App_Code/Utilities.cs
new file mode 100644
index 0000000..2c25fe8
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+++ b/samples/OAuthServiceProvider/App_Code/Utilities.cs
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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Principal;
+using System.Web;
+
+/// <summary>
+/// Extension methods and other helpful utility methods.
+/// </summary>
+public static class Utilities {
+	/// <summary>
+	/// Gets the database entity representing the user identified by a given <see cref="IIdentity"/> instance.
+	/// </summary>
+	/// <param name="identity">The identity of the user.</param>
+	/// <returns>
+	/// The database object for that user; or <c>null</c> if the user could not
+	/// be found or if <paramref name="identity"/> is <c>null</c> or represents an anonymous identity.
+	/// </returns>
+	public static User GetUser(this IIdentity identity) {
+		if (identity == null || !identity.IsAuthenticated) {
+			return null;
+		}
+
+		return Global.DataContext.Users.SingleOrDefault(user => user.OpenIDClaimedIdentifier == identity.Name);
+	}
+}