Added OpenID sample sites: RP MVC, RP WebForms, RP Classic ASP, OP WebForms.

1 files changed, 137 insertions, 0 deletions

diff --git a/samples/RelyingPartyWebForms/Code/CustomStore.cs b/samples/RelyingPartyWebForms/Code/CustomStore.cs
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+++ b/samples/RelyingPartyWebForms/Code/CustomStore.cs
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+namespace RelyingPartyWebForms.Code {
+	using System;
+	using System.Data;
+	using System.Globalization;
+	using System.Security.Cryptography;
+	using DotNetOpenAuth.OpenId;
+	using DotNetOpenAuth.OpenId.RelyingParty;
+
+	/// <summary>
+	/// This custom store serializes all elements to demonstrate peristent and/or shared storage.
+	/// This is common in a web farm, for example.
+	/// </summary>
+	/// <remarks>
+	/// This doesn't actually serialize anything to a persistent store, so restarting the web server
+	/// will still clear everything this store is supposed to remember.
+	/// But we "persist" all associations and nonces into a DataTable to demonstrate
+	/// that using a database is possible.
+	/// </remarks>
+	public class CustomStore : IRelyingPartyApplicationStore {
+		private static CustomStoreDataSet dataSet = new CustomStoreDataSet();
+
+		#region IPrivateSecretStore Members
+
+		/// <summary>
+		/// Gets or sets a secret key that can be used for signing.
+		/// </summary>
+		/// <value>A 64-byte binary value, which may contain null bytes.</value>
+		public byte[] PrivateSecret { get; set; }
+
+		#endregion
+
+		#region INonceStore Members
+
+		/// <summary>
+		/// Stores a given nonce and timestamp.
+		/// </summary>
+		/// <param name="nonce">A series of random characters.</param>
+		/// <param name="timestamp">The timestamp that together with the nonce string make it unique.
+		/// The timestamp may also be used by the data store to clear out old nonces.</param>
+		/// <returns>
+		/// True if the nonce+timestamp (combination) was not previously in the database.
+		/// False if the nonce was stored previously with the same timestamp.
+		/// </returns>
+		/// <remarks>
+		/// The nonce must be stored for no less than the maximum time window a message may
+		/// be processed within before being discarded as an expired message.
+		/// If the binding element is applicable to your channel, this expiration window
+		/// is retrieved or set using the
+		/// <see cref="StandardExpirationBindingElement.MaximumMessageAge"/> property.
+		/// </remarks>
+		public bool StoreNonce(string nonce, DateTime timestamp) {
+			// IMPORTANT: If actually persisting to a database that can be reached from
+			// different servers/instances of this class at once, it is vitally important
+			// to protect against race condition attacks by one or more of these:
+			// 1) setting a UNIQUE constraint on the nonce CODE in the SQL table
+			// 2) Using a transaction with repeatable reads to guarantee that a check
+			//    that verified a nonce did not exist will prevent that nonce from being
+			//    added by another process while this process is adding it.
+			// And then you'll want to catch the exception that the SQL database can throw
+			// at you in the result of a race condition somewhere in your web site UI code
+			// and display some message to have the user try to log in again, and possibly
+			// warn them about a replay attack.
+			lock (this) {
+				if (dataSet.Nonce.FindByCode(nonce) != null) {
+					return false;
+				}
+
+				// TODO: calculate the actual expiration date.
+				dataSet.Nonce.AddNonceRow(nonce, timestamp.ToLocalTime(), (timestamp + TimeSpan.FromHours(1)).ToLocalTime());
+				return true;
+			}
+		}
+
+		public void ClearExpiredNonces() {
+			this.removeExpiredRows(dataSet.Nonce, dataSet.Nonce.ExpiresColumn.ColumnName);
+		}
+
+		#endregion
+
+		#region IAssociationStore<Uri> Members
+
+		public void StoreAssociation(Uri distinguishingFactor, Association assoc) {
+			var assocRow = dataSet.Association.NewAssociationRow();
+			assocRow.DistinguishingFactor = distinguishingFactor.AbsoluteUri;
+			assocRow.Handle = assoc.Handle;
+			assocRow.Expires = assoc.Expires.ToLocalTime();
+			assocRow.PrivateData = assoc.SerializePrivateData();
+			dataSet.Association.AddAssociationRow(assocRow);
+		}
+
+		public Association GetAssociation(Uri distinguishingFactor) {
+			// properly escape the URL to prevent injection attacks.
+			string value = distinguishingFactor.AbsoluteUri.Replace("'", "''");
+			string filter = string.Format(
+				CultureInfo.InvariantCulture,
+				"{0} = '{1}'",
+				dataSet.Association.DistinguishingFactorColumn.ColumnName,
+				value);
+			string sort = dataSet.Association.ExpiresColumn.ColumnName + " DESC";
+			DataView view = new DataView(dataSet.Association, filter, sort, DataViewRowState.CurrentRows);
+			if (view.Count == 0) {
+				return null;
+			}
+			var row = (CustomStoreDataSet.AssociationRow)view[0].Row;
+			return Association.Deserialize(row.Handle, row.Expires.ToUniversalTime(), row.PrivateData);
+		}
+
+		public Association GetAssociation(Uri distinguishingFactor, string handle) {
+			var assocRow = dataSet.Association.FindByDistinguishingFactorHandle(distinguishingFactor.AbsoluteUri, handle);
+			return Association.Deserialize(assocRow.Handle, assocRow.Expires, assocRow.PrivateData);
+		}
+
+		public bool RemoveAssociation(Uri distinguishingFactor, string handle) {
+			var row = dataSet.Association.FindByDistinguishingFactorHandle(distinguishingFactor.AbsoluteUri, handle);
+			if (row != null) {
+				dataSet.Association.RemoveAssociationRow(row);
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		public void ClearExpiredAssociations() {
+			this.removeExpiredRows(dataSet.Association, dataSet.Association.ExpiresColumn.ColumnName);
+		}
+
+		#endregion
+
+		private void removeExpiredRows(DataTable table, string expiredColumnName) {
+			string filter = string.Format(CultureInfo.InvariantCulture, "{0} < #{1}#", expiredColumnName, DateTime.Now);
+			DataView view = new DataView(table, filter, null, DataViewRowState.CurrentRows);
+			for (int i = view.Count - 1; i >= 0; i--) {
+				view.Delete(i);
+			}
+		}
+	}
+}