Fixed up the timestamp to be OAuth compliant.

1 files changed, 15 insertions, 2 deletions

diff --git a/src/DotNetOAuth/Messages/SignedMessageBase.cs b/src/DotNetOAuth/Messages/SignedMessageBase.cs
index 7361adf..52f03ab 100644
--- a/src/DotNetOAuth/Messages/SignedMessageBase.cs
+++ b/src/DotNetOAuth/Messages/SignedMessageBase.cs
@@ -15,6 +15,17 @@ namespace DotNetOAuth.Messages {
 	/// </summary>

 	internal class SignedMessageBase : MessageBase, ITamperResistantOAuthMessage, IExpiringProtocolMessage, IReplayProtectedProtocolMessage {

 		/// <summary>

+		/// The reference date and time for calculating time stamps.

+		/// </summary>

+		private static readonly DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);

+

+		/// <summary>

+		/// The number of seconds since 1/1/1970, consistent with the OAuth timestamp requirement.

+		/// </summary>

+		[MessagePart("oauth_timestamp")]

+		private long timestamp;

+

+		/// <summary>

 		/// Initializes a new instance of the <see cref="SignedMessageBase"/> class.

 		/// </summary>

 		/// <param name="transport">A value indicating whether this message requires a direct or indirect transport.</param>

@@ -52,8 +63,10 @@ namespace DotNetOAuth.Messages {
 		/// <summary>

 		/// Gets or sets the OAuth timestamp of the message.

 		/// </summary>

-		[MessagePart("oauth_timestamp")]

-		DateTime IExpiringProtocolMessage.UtcCreationDate { get; set; }

+		DateTime IExpiringProtocolMessage.UtcCreationDate {

+			get { return epoch + TimeSpan.FromSeconds(this.timestamp); }

+			set { this.timestamp = (long)(value - epoch).TotalSeconds; }

+		}

 

 		#endregion