1 files changed, 28 insertions, 9 deletions
diff --git a/src/DotNetOpenId/Extensions/AttributeExchangeStoreResponse.cs b/src/DotNetOpenId/Extensions/AttributeExchangeStoreResponse.cs
index b28d2be..dbdbabd 100644
--- a/src/DotNetOpenId/Extensions/AttributeExchangeStoreResponse.cs
+++ b/src/DotNetOpenId/Extensions/AttributeExchangeStoreResponse.cs
@@ -2,25 +2,44 @@
 using System.Collections.Generic;
 using System.Text;
 using DotNetOpenId.RelyingParty;
+using System.Globalization;
 
 namespace DotNetOpenId.Extensions {
 	/// <summary>
 	/// The Attribute Exchange Store message, response leg.
 	/// </summary>
-	public struct AttributeExchangeStoreResponse {
-		/// <summary>
-		/// Adds the values of this struct to an authentication response being prepared
-		/// by an OpenID Provider.
-		/// </summary>
-		public void AddToResponse(Provider.IAuthenticationRequest authenticationRequest) {
-			throw new NotImplementedException();
-		}
+	public class AttributeExchangeStoreResponse : IExtensionResponse {
+		readonly string Mode = "store_response";
+		
 		/// <summary>
 		/// Reads a Provider's response for Attribute Exchange values and returns
 		/// an instance of this struct with the values.
 		/// </summary>
 		public static AttributeExchangeStoreResponse ReadFromResponse(IAuthenticationResponse response) {
-			throw new NotImplementedException();
+			var obj = new AttributeExchangeStoreResponse();
+			return ((IExtensionResponse)obj).ReadFromResponse(response) ? obj : null;
+		}
+
+		#region IExtensionResponse Members
+		string IExtensionResponse.TypeUri { get { return Constants.ae.ns; } }
+
+		public void AddToResponse(Provider.IRequest authenticationRequest) {
+			var fields = new Dictionary<string, string> {
+				{ "mode", Mode },
+			};
+			authenticationRequest.AddExtensionArguments(Constants.ae.ns, fields);
 		}
+
+		bool IExtensionResponse.ReadFromResponse(IAuthenticationResponse response) {
+			var fields = response.GetExtensionArguments(Constants.ae.ns);
+			if (fields == null) return false;
+			string mode;
+			fields.TryGetValue("mode", out mode);
+			if (mode != Mode) return false;
+
+			return true;
+		}
+
+		#endregion
 	}
 }