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//
// Transform.cs - Transform implementation for XML Signature
//
// Author:
// Sebastien Pouliot <sebastien@ximian.com>
// Atsushi Enomoto <atsushi@ximian.com>
// Tim Coleman <tim@timcoleman.com>
//
// (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
// Copyright (C) Tim Coleman, 2004
// Copyright (C) 2004-2006 Novell Inc. (http://www.novell.com)
//
// 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.Runtime.InteropServices;
using System.Security;
using System.Security.Policy;
using System.Xml;
namespace System.Security.Cryptography.Xml {
public abstract class Transform {
private string algo;
private XmlResolver xmlResolver;
#if NET_2_0
protected Transform ()
#else
public Transform ()
#endif
{
if (SecurityManager.SecurityEnabled) {
xmlResolver = new XmlSecureResolver (new XmlUrlResolver (), (Evidence) new Evidence ());
} else {
xmlResolver = new XmlUrlResolver ();
}
}
#region Properties
public string Algorithm {
get { return algo; }
set { algo = value; }
}
public abstract Type[] InputTypes {
get;
}
public abstract Type[] OutputTypes {
get;
}
#if NET_1_1
[ComVisible(false)]
public XmlResolver Resolver {
set { xmlResolver = value; }
}
#endif
#if NET_2_0
[MonoTODO]
[ComVisible (false)]
public XmlElement Context {
get { throw new NotImplementedException (); }
set { throw new NotImplementedException (); }
}
[MonoTODO]
[ComVisible (false)]
public Hashtable PropagatedNamespaces {
get { throw new NotImplementedException (); }
}
#endif
#endregion // Properties
#region Methods
#if NET_2_0
[ComVisible (false)]
public virtual byte[] GetDigestedOutput (HashAlgorithm hash)
{
return hash.ComputeHash ((Stream) GetOutput (typeof (Stream)));
}
#endif
protected abstract XmlNodeList GetInnerXml ();
public abstract object GetOutput ();
public abstract object GetOutput (Type type);
public XmlElement GetXml ()
{
XmlDocument document = new XmlDocument ();
document.XmlResolver = GetResolver ();
XmlElement xel = document.CreateElement (XmlSignature.ElementNames.Transform, XmlSignature.NamespaceURI);
xel.SetAttribute (XmlSignature.AttributeNames.Algorithm, algo);
XmlNodeList xnl = this.GetInnerXml ();
if (xnl != null) {
foreach (XmlNode xn in xnl) {
XmlNode importedNode = document.ImportNode (xn, true);
xel.AppendChild (importedNode);
}
}
return xel;
}
public abstract void LoadInnerXml (XmlNodeList nodeList);
public abstract void LoadInput (object obj);
internal XmlResolver GetResolver ()
{
return xmlResolver;
}
#endregion // Methods
}
}
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