//
// Copyright (C) Tim Coleman, 2004
-#if NET_2_0
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System.Collections;
+using System.IO;
using System.Xml;
namespace System.Security.Cryptography.Xml {
+
public class XmlDecryptionTransform : Transform {
#region Fields
EncryptedXml encryptedXml;
Type[] inputTypes;
Type[] outputTypes;
+ object inputObj;
+ ArrayList exceptUris;
+
+ const string NamespaceUri = "http://www.w3.org/2002/07/decrypt#";
#endregion // Fields
#region Constructors
public XmlDecryptionTransform ()
- : base ()
{
+ Algorithm = XmlSignature.AlgorithmNamespaces.XmlDecryptionTransform;
+ encryptedXml = new EncryptedXml ();
+ exceptUris = new ArrayList ();
}
#endregion // Constructors
public override Type[] InputTypes {
get {
- if (inputTypes == null) {
- lock (this) {
- inputTypes = new Type [3] {typeof (System.IO.Stream), typeof (System.Xml.XmlNodeList), typeof (System.Xml.XmlDocument)};
- }
- }
+ if (inputTypes == null)
+ inputTypes = new Type [2] {typeof (System.IO.Stream), typeof (System.Xml.XmlDocument)};
+
return inputTypes;
}
}
public override Type[] OutputTypes {
get {
- if (outputTypes == null) {
- lock (this) {
- outputTypes = new Type [2] {typeof (System.Xml.XmlDocument), typeof (System.Xml.XmlNodeList)};
- }
- }
+ if (outputTypes == null)
+ outputTypes = new Type [1] {typeof (System.Xml.XmlDocument)};
+
return outputTypes;
}
}
#region Methods
- [MonoTODO]
+ public void AddExceptUri (string uri)
+ {
+ exceptUris.Add (uri);
+ }
+
+ private void ClearExceptUris ()
+ {
+ exceptUris.Clear ();
+ }
+
+ [MonoTODO ("Verify")]
protected override XmlNodeList GetInnerXml ()
{
- throw new NotImplementedException ();
+ XmlDocument doc = new XmlDocument ();
+ doc.AppendChild (doc.CreateElement ("DecryptionTransform"));
+
+ foreach (object o in exceptUris) {
+ XmlElement element = doc.CreateElement ("Except", NamespaceUri);
+ element.Attributes.Append (doc.CreateAttribute ("URI", NamespaceUri));
+ element.Attributes ["URI", NamespaceUri].Value = (string) o;
+ doc.DocumentElement.AppendChild (element);
+ }
+
+ return doc.GetElementsByTagName ("Except", NamespaceUri);
}
- [MonoTODO]
+ [MonoTODO ("Verify processing of ExceptURIs")]
public override object GetOutput ()
{
- throw new NotImplementedException ();
+ XmlDocument document;
+ if (inputObj is Stream) {
+ document = new XmlDocument ();
+ document.PreserveWhitespace = true;
+ document.XmlResolver = GetResolver ();
+ document.Load (new XmlSignatureStreamReader (
+ new StreamReader (inputObj as Stream)));
+ }
+ else if (inputObj is XmlDocument) {
+ document = inputObj as XmlDocument;
+ }
+ else
+ throw new NullReferenceException ();
+
+ XmlNodeList nodes = document.GetElementsByTagName ("EncryptedData", EncryptedXml.XmlEncNamespaceUrl);
+ foreach (XmlNode node in nodes) {
+ if (node == document.DocumentElement && exceptUris.Contains ("#xpointer(/)"))
+ break;
+
+ // Need to exclude based on ExceptURI. Only accept #id references.
+ foreach (string uri in exceptUris)
+ if (IsTargetElement ((XmlElement) node, uri.Substring (1)))
+ break;
+
+ EncryptedData encryptedData = new EncryptedData ();
+ encryptedData.LoadXml ((XmlElement) node);
+ SymmetricAlgorithm symAlg = EncryptedXml.GetDecryptionKey (encryptedData, encryptedData.EncryptionMethod.KeyAlgorithm);
+ EncryptedXml.ReplaceData ((XmlElement) node, EncryptedXml.DecryptData (encryptedData, symAlg));
+ }
+
+ return document;
}
- [MonoTODO]
public override object GetOutput (Type type)
- {
- throw new NotImplementedException ();
+ {
+ if (type == typeof (Stream))
+ return GetOutput ();
+ throw new ArgumentException ("type");
}
- [MonoTODO]
+ [MonoTODO ("verify")]
protected virtual bool IsTargetElement (XmlElement inputElement, string idValue)
{
- throw new NotImplementedException ();
+ if ((inputElement == null) || (idValue == null))
+ return false;
+ return (inputElement.Attributes ["id"].Value == idValue);
}
- [MonoTODO]
+ [MonoTODO ("This doesn't seem to work in .NET")]
public override void LoadInnerXml (XmlNodeList nodeList)
{
- throw new NotImplementedException ();
+ if (nodeList == null)
+ throw new NullReferenceException ();
+
+ ClearExceptUris ();
+ foreach (XmlNode node in nodeList) {
+ XmlElement element = node as XmlElement;
+ if (element.NamespaceURI.Equals (NamespaceUri) && element.LocalName.Equals ("Except")) {
+ string uri = element.Attributes ["URI", NamespaceUri].Value;
+ if (!uri.StartsWith ("#"))
+ throw new CryptographicException ("A Uri attribute is required for a CipherReference element.");
+ AddExceptUri (uri);
+ }
+ }
}
- [MonoTODO]
public override void LoadInput (object obj)
{
- throw new NotImplementedException ();
+ inputObj = obj;
}
#endregion // Methods
}
}
-#endif
projects / mono.git / blobdiff