Added some basic classes, message serialization and some unit tests.

1 files changed, 346 insertions, 0 deletions

diff --git a/src/DotNetOAuth/ProtocolMessageSerializer.cs b/src/DotNetOAuth/ProtocolMessageSerializer.cs
new file mode 100644
index 0000000..da564d2
--- /dev/null
+++ b/src/DotNetOAuth/ProtocolMessageSerializer.cs
@@ -0,0 +1,346 @@
+using System;

+using System.Collections.Generic;

+using System.Linq;

+using System.Runtime.Serialization;

+using System.Text;

+using System.Xml;

+

+namespace DotNetOAuth {

+	/// <summary>

+	/// Serializes/deserializes OAuth messages for/from transit.

+	/// </summary>

+	internal class ProtocolMessageSerializer<T> where T : IProtocolMessage {

+		DataContractSerializer serializer;

+		const string rootName = "root";

+

+		internal ProtocolMessageSerializer() {

+			serializer = new DataContractSerializer(typeof(T), rootName, Protocol.DataContractNamespace);

+		}

+

+		/// <summary>

+		/// Reads the data from a message instance and returns a series of name=value pairs for the fields that must be included in the message.

+		/// </summary>

+		/// <param name="message">The message to be serialized.</param>

+		internal IDictionary<string, string> Serialize(T message) {

+			if (message == null) throw new ArgumentNullException("message");

+

+			var fields = new Dictionary<string, string>();

+			XmlWriter writer = new ProtocolMessageSerializer<T>.PseudoXmlWriter(fields);

+			serializer.WriteObjectContent(writer, message);

+			writer.Close();

+			return fields;

+		}

+

+		/// <summary>

+		/// Reads name=value pairs into an OAuth message.

+		/// </summary>

+		/// <param name="fields">The name=value pairs that were read in from the transport.</param>

+		internal T Deserialize(IDictionary<string, string> fields) {

+			if (fields == null) throw new ArgumentNullException("fields");

+

+			var reader = new PseudoXmlReader(fields);

+			//var reader = new XmlTextReader(new StringReader("<root xmlns='http://oauth.net/core/1.0/'><Name>Andrew</Name><age>15</age></root>"));

+			T result = (T)serializer.ReadObject(reader, false);

+			return result;

+		}

+

+		/// <summary>

+		/// Writes out a dictionary as if it were XML.

+		/// </summary>

+		class PseudoXmlWriter : XmlWriter {

+			Dictionary<string, string> dictionary;

+			string key;

+			StringBuilder value = new StringBuilder();

+

+			internal PseudoXmlWriter(Dictionary<string, string> dictionary) {

+				this.dictionary = dictionary;

+			}

+

+			public override void WriteStartElement(string prefix, string localName, string ns) {

+				key = localName;

+				value.Length = 0;

+			}

+

+			public override void WriteString(string text) {

+				if (!string.IsNullOrEmpty(key)) {

+					value.Append(text);

+				}

+			}

+

+			public override void WriteEndElement() {

+				if (key != null) {

+					dictionary[key] = value.ToString();

+					key = null;

+					value.Length = 0;

+				}

+			}

+

+			public override WriteState WriteState {

+				get { return WriteState.Element; }

+			}

+

+			public override void WriteStartAttribute(string prefix, string localName, string ns) {

+				key = null;

+			}

+

+			public override void WriteEndAttribute() { }

+

+			public override void Close() { }

+

+			#region Unimplemented methods

+

+			public override void Flush() {

+				throw new NotImplementedException();

+			}

+

+			public override string LookupPrefix(string ns) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteBase64(byte[] buffer, int index, int count) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteCData(string text) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteCharEntity(char ch) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteChars(char[] buffer, int index, int count) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteComment(string text) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteDocType(string name, string pubid, string sysid, string subset) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteEndDocument() {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteEntityRef(string name) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteFullEndElement() {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteProcessingInstruction(string name, string text) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteRaw(string data) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteRaw(char[] buffer, int index, int count) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteStartDocument(bool standalone) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteStartDocument() {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteSurrogateCharEntity(char lowChar, char highChar) {

+				throw new NotImplementedException();

+			}

+

+			public override void WriteWhitespace(string ws) {

+				throw new NotImplementedException();

+			}

+

+			#endregion

+		}

+

+		/// <summary>

+		/// Reads in a dictionary as if it were XML.

+		/// </summary>

+		class PseudoXmlReader : XmlReader {

+			IDictionary<string, string> dictionary;

+			IEnumerator<string> keyEnumerator;

+			bool isFinished;

+			int depth;

+			XmlNodeType currentNode = XmlNodeType.None;

+

+			internal PseudoXmlReader(IDictionary<string, string> dictionary) {

+				this.dictionary = dictionary;

+				keyEnumerator = dictionary.Keys.OrderBy(key => key, StringComparer.Ordinal).GetEnumerator();

+			}

+

+			public override int AttributeCount {

+				get { return 0; }

+			}

+

+			public override bool IsEmptyElement {

+				get {

+					if (keyEnumerator.Current == null) {

+						return isFinished;

+					}

+					string value;

+					bool result = !dictionary.TryGetValue(keyEnumerator.Current, out value) || String.IsNullOrEmpty(value);

+					return result;

+				}

+			}

+

+			public override string LocalName {

+				get { return keyEnumerator.Current; }

+			}

+

+			public override bool MoveToElement() {

+				bool result = currentNode != XmlNodeType.Element && depth > 0;

+				currentNode = depth > 0 ? XmlNodeType.Element : XmlNodeType.None;

+				return result;

+			}

+

+			public override bool MoveToNextAttribute() {

+				if (depth == 1 && currentNode != XmlNodeType.Attribute) {

+					currentNode = XmlNodeType.Attribute;

+					return true;

+				} else {

+					return false;

+				}

+			}

+

+			public override string NamespaceURI {

+				get {

+					string result = depth == 1 && currentNode == XmlNodeType.Attribute ?

+						"http://www.w3.org/2000/xmlns/" : Protocol.DataContractNamespace;

+					return result;

+				}

+			}

+

+			public override XmlNodeType NodeType {

+				get { return currentNode; }

+			}

+

+			public override bool Read() {

+				if (isFinished) {

+					if (depth > 0) {

+						depth--;

+					}

+					return depth > 0;

+				}

+				switch (depth) {

+					case 0: // moving to root node

+						depth++; // -> 1

+						currentNode = XmlNodeType.Element;

+						return true;

+					case 1: // moving to first content node

+						depth++; // -> 2

+						isFinished = !keyEnumerator.MoveNext();

+						currentNode = isFinished ? XmlNodeType.EndElement : XmlNodeType.Element;

+						return true;

+					case 2: // content node

+						switch (currentNode) {

+							case XmlNodeType.Element:

+								currentNode = XmlNodeType.Text;

+								return true;

+							case XmlNodeType.Text:

+								currentNode = XmlNodeType.EndElement;

+								return true;

+							case XmlNodeType.EndElement:

+								bool result = keyEnumerator.MoveNext();

+								if (!result) {

+									isFinished = true;

+									depth--;

+									currentNode = XmlNodeType.EndElement;

+								} else {

+									currentNode = XmlNodeType.Element;

+								}

+								return true;

+						}

+						break;

+				}

+				throw new InvalidOperationException();

+			}

+

+			public override string Value {

+				get { return dictionary[keyEnumerator.Current]; }

+			}

+

+			#region Unimplemented methods

+

+			public override string BaseURI {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override void Close() {

+				throw new NotImplementedException();

+			}

+

+			public override int Depth {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override bool EOF {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override string GetAttribute(int i) {

+				throw new NotImplementedException();

+			}

+

+			public override string GetAttribute(string name, string namespaceURI) {

+				throw new NotImplementedException();

+			}

+

+			public override string GetAttribute(string name) {

+				throw new NotImplementedException();

+			}

+

+			public override bool HasValue {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override string LookupNamespace(string prefix) {

+				throw new NotImplementedException();

+			}

+

+			public override bool MoveToAttribute(string name, string ns) {

+				throw new NotImplementedException();

+			}

+

+			public override bool MoveToAttribute(string name) {

+				throw new NotImplementedException();

+			}

+

+			public override bool MoveToFirstAttribute() {

+				throw new NotImplementedException();

+			}

+

+			public override XmlNameTable NameTable {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override string Prefix {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override ReadState ReadState {

+				get { throw new NotImplementedException(); }

+			}

+

+			public override bool ReadAttributeValue() {

+				throw new NotImplementedException();

+			}

+

+			public override void ResolveEntity() {

+				throw new NotImplementedException();

+			}

+

+			#endregion

+		}

+	}

+}