1 files changed, 67 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/ChannelElements/OpenIdRelyingPartyMessageFactory.cs b/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/ChannelElements/OpenIdRelyingPartyMessageFactory.cs
new file mode 100644
index 0000000..aaa375f
--- /dev/null
+++ b/src/DotNetOpenAuth.OpenId.RelyingParty/OpenId/ChannelElements/OpenIdRelyingPartyMessageFactory.cs
@@ -0,0 +1,67 @@
+namespace DotNetOpenAuth.OpenId.ChannelElements {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using DotNetOpenAuth.Messaging;
+	using DotNetOpenAuth.OpenId.Messages;
+
+	internal class OpenIdRelyingPartyMessageFactory : OpenIdMessageFactory {
+		/// <summary>
+		/// Analyzes an incoming request message payload to discover what kind of
+		/// message is embedded in it and returns the type, or null if no match is found.
+		/// </summary>
+		/// <param name="request">The message that was sent as a request that resulted in the response.</param>
+		/// <param name="fields">The name/value pairs that make up the message payload.</param>
+		/// <returns>
+		/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
+		/// deserialize to.  Null if the request isn't recognized as a valid protocol message.
+		/// </returns>
+		public override IDirectResponseProtocolMessage GetNewResponseMessage(IDirectedProtocolMessage request, IDictionary<string, string> fields) {
+			DirectResponseBase message = null;
+
+			// Discern the OpenID version of the message.
+			Protocol protocol = Protocol.V11;
+			string ns;
+			if (fields.TryGetValue(Protocol.V20.openidnp.ns, out ns)) {
+				ErrorUtilities.VerifyProtocol(string.Equals(ns, Protocol.OpenId2Namespace, StringComparison.Ordinal), MessagingStrings.UnexpectedMessagePartValue, Protocol.V20.openidnp.ns, ns);
+				protocol = Protocol.V20;
+			}
+
+			// Handle error messages generally.
+			if (fields.ContainsKey(protocol.openidnp.error)) {
+				message = new DirectErrorResponse(protocol.Version, request);
+			}
+
+			var associateRequest = request as AssociateRequest;
+			if (associateRequest != null) {
+				if (protocol.Version.Major >= 2 && fields.ContainsKey(protocol.openidnp.error_code)) {
+					// This is a special recognized error case that we create a special message for.
+					message = new AssociateUnsuccessfulResponse(protocol.Version, associateRequest);
+				} else if (message == null) {
+					var associateDiffieHellmanRequest = request as AssociateDiffieHellmanRequest;
+					var associateUnencryptedRequest = request as AssociateUnencryptedRequest;
+
+					if (associateDiffieHellmanRequest != null) {
+						message = new AssociateDiffieHellmanRelyingPartyResponse(protocol.Version, associateDiffieHellmanRequest);
+					}
+
+					if (associateUnencryptedRequest != null) {
+						message = new AssociateUnencryptedResponse(protocol.Version, associateUnencryptedRequest);
+					}
+				}
+			}
+
+			var checkAuthenticationRequest = request as CheckAuthenticationRequest;
+			if (checkAuthenticationRequest != null && message == null) {
+				message = new CheckAuthenticationResponse(protocol.Version, checkAuthenticationRequest);
+			}
+
+			if (message != null) {
+				message.SetAsIncoming();
+			}
+
+			return message;
+		}
+	}
+}