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//
// XmlDsigEnvelopedSignatureTransform.cs -
// Enveloped Signature Transform implementation for XML Signature
// http://www.w3.org/TR/1999/REC-xslt-19991116
//
// Author:
// Sebastien Pouliot (spouliot@motus.com)
// Atsushi Enomoto (atsushi@ximian.com)
//
// (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
// (C) 2004 Novell Inc.
//
//
// 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.IO;
using System.Xml;
using System.Xml.Xsl;
namespace System.Security.Cryptography.Xml
{
public class XmlDsigXsltTransform : Transform
{
private Type [] input;
private Type [] output;
private bool comments;
private XmlNodeList xnl;
private XmlDocument inputDoc;
public XmlDsigXsltTransform () : this (false)
{
}
public XmlDsigXsltTransform (bool includeComments)
{
comments = includeComments;
Algorithm = "http://www.w3.org/TR/1999/REC-xslt-19991116";
}
public override Type [] InputTypes {
get {
if (input == null) {
lock (this) {
// this way the result is cached if called multiple time
input = new Type [3];
input [0] = typeof (System.IO.Stream);
input [1] = typeof (System.Xml.XmlDocument);
input [2] = typeof (System.Xml.XmlNodeList);
}
}
return input;
}
}
public override Type [] OutputTypes {
get {
if (output == null) {
lock (this) {
// this way the result is cached if called multiple time
output = new Type [1];
output [0] = typeof (System.IO.Stream);
}
}
return output;
}
}
protected override XmlNodeList GetInnerXml ()
{
return xnl;
}
public override object GetOutput ()
{
#if NET_2_0
if (xnl == null)
throw new ArgumentNullException ("LoadInnerXml before transformation.");
#endif
XmlResolver resolver = GetResolver ();
XslTransform xsl = new XslTransform ();
XmlDocument doc = new XmlDocument ();
#if NET_1_1
doc.XmlResolver = resolver;
#endif
foreach (XmlNode n in xnl)
doc.AppendChild (doc.ImportNode (n, true));
#if NET_1_1
xsl.Load (doc, resolver);
#else
xsl.Load (doc);
#endif
if (inputDoc == null)
#if NET_2_0
throw new ArgumentNullException ("LoadInput before transformation.");
#else
throw new NullReferenceException ("LoadInput before transformation.");
#endif
MemoryStream stream = new MemoryStream ();
// only possible output: Stream
#if NET_1_1
xsl.XmlResolver = resolver;
#endif
xsl.Transform (inputDoc, null, stream);
stream.Seek (0, SeekOrigin.Begin);
return stream;
}
public override object GetOutput (Type type)
{
if (type != Type.GetType ("System.IO.Stream"))
throw new ArgumentException ("type");
return GetOutput ();
}
public override void LoadInnerXml (XmlNodeList nodeList)
{
if (nodeList == null)
throw new CryptographicException ("nodeList");
xnl = nodeList;
}
public override void LoadInput (object obj)
{
// possible input: Stream, XmlDocument, and XmlNodeList
if (obj is Stream) {
inputDoc = new XmlDocument ();
#if NET_1_1
inputDoc.XmlResolver = GetResolver ();
#endif
// inputDoc.Load (obj as Stream);
inputDoc.Load (new XmlSignatureStreamReader (
new StreamReader (obj as Stream)));
}
else if (obj is XmlDocument) {
inputDoc= obj as XmlDocument;
}
else if (obj is XmlNodeList) {
inputDoc = new XmlDocument ();
#if NET_1_1
inputDoc.XmlResolver = GetResolver ();
#endif
XmlNodeList nl = (XmlNodeList) obj;
for (int i = 0; i < nl.Count; i++)
inputDoc.AppendChild (inputDoc.ImportNode (nl [i], true));
}
}
}
}
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