1 files changed, 29 insertions, 0 deletions
diff --git a/samples/DotNetOpenAuth.ApplicationBlock/Util.cs b/samples/DotNetOpenAuth.ApplicationBlock/Util.cs
new file mode 100644
index 0000000..5001e2e
--- /dev/null
+++ b/samples/DotNetOpenAuth.ApplicationBlock/Util.cs
@@ -0,0 +1,29 @@
+namespace DotNetOpenAuth.ApplicationBlock {
+	using System;
+	using System.Collections.Generic;
+	using DotNetOpenAuth.Messaging;
+
+	internal class Util {
+		/// <summary>
+		/// Enumerates through the individual set bits in a flag enum.
+		/// </summary>
+		/// <param name="flags">The flags enum value.</param>
+		/// <returns>An enumeration of just the <i>set</i> bits in the flags enum.</returns>
+		internal static IEnumerable<long> GetIndividualFlags(Enum flags) {
+			long flagsLong = Convert.ToInt64(flags);
+			for (int i = 0; i < sizeof(long) * 8; i++) { // long is the type behind the largest enum
+				// Select an individual application from the scopes.
+				long individualFlagPosition = (long)Math.Pow(2, i);
+				long individualFlag = flagsLong & individualFlagPosition;
+				if (individualFlag == individualFlagPosition) {
+					yield return individualFlag;
+				}
+			}
+		}
+
+		internal static Uri GetCallbackUrlFromContext() {
+			Uri callback = MessagingUtilities.GetRequestUrlFromContext().StripQueryArgumentsWithPrefix("oauth_");
+			return callback;
+		}
+	}
+}