1 files changed, 73 insertions, 0 deletions
diff --git a/src/DotNetOAuth/OAuth/ChannelElements/OAuthHttpMethodBindingElement.cs b/src/DotNetOAuth/OAuth/ChannelElements/OAuthHttpMethodBindingElement.cs
new file mode 100644
index 0000000..e026c02
--- /dev/null
+++ b/src/DotNetOAuth/OAuth/ChannelElements/OAuthHttpMethodBindingElement.cs
@@ -0,0 +1,73 @@
+//-----------------------------------------------------------------------
+// <copyright file="OAuthHttpMethodBindingElement.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOAuth.OAuth.ChannelElements {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using DotNetOAuth.Messaging;
+
+	/// <summary>
+	/// Sets the HTTP Method property on a signed message before the signing module gets to it.
+	/// </summary>
+	internal class OAuthHttpMethodBindingElement : IChannelBindingElement {
+		#region IChannelBindingElement Members
+
+		/// <summary>
+		/// Gets the protection offered (if any) by this binding element.
+		/// </summary>
+		public MessageProtections Protection {
+			get { return MessageProtections.None; }
+		}
+
+		/// <summary>
+		/// Prepares a message for sending based on the rules of this channel binding element.
+		/// </summary>
+		/// <param name="message">The message to prepare for sending.</param>
+		/// <returns>
+		/// True if the <paramref name="message"/> applied to this binding element
+		/// and the operation was successful.  False otherwise.
+		/// </returns>
+		public bool PrepareMessageForSending(IProtocolMessage message) {
+			var oauthMessage = message as ITamperResistantOAuthMessage;
+
+			if (oauthMessage != null) {
+				HttpDeliveryMethods transmissionMethod = oauthMessage.HttpMethods;
+				if ((transmissionMethod & HttpDeliveryMethods.PostRequest) != 0) {
+					oauthMessage.HttpMethod = "POST";
+				} else if ((transmissionMethod & HttpDeliveryMethods.GetRequest) != 0) {
+					oauthMessage.HttpMethod = "GET";
+				} else {
+					return false;
+				}
+
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/// <summary>
+		/// Performs any transformation on an incoming message that may be necessary and/or
+		/// validates an incoming message based on the rules of this channel binding element.
+		/// </summary>
+		/// <param name="message">The incoming message to process.</param>
+		/// <returns>
+		/// True if the <paramref name="message"/> applied to this binding element
+		/// and the operation was successful.  False if the operation did not apply to this message.
+		/// </returns>
+		/// <exception cref="ProtocolException">
+		/// Thrown when the binding element rules indicate that this message is invalid and should
+		/// NOT be processed.
+		/// </exception>
+		public bool PrepareMessageForReceiving(IProtocolMessage message) {
+			return false;
+		}
+
+		#endregion
+	}
+}