2 // XmlDsigExcC14NTransform.cs - ExcC14N Transform implementation for XML Signature
3 // http://www.w3.org/TR/xml-c14n
6 // Sebastien Pouliot <sebastien@ximian.com>
7 // Aleksey Sanin (aleksey@aleksey.com)
8 // Tim Coleman (tim@timcoleman.com)
10 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
11 // (C) 2003 Aleksey Sanin (aleksey@aleksey.com)
12 // Copyright (C) Tim Coleman, 2004
13 // Copyright (C) 2004-2005 Novell Inc. (http://www.novell.com)
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Collections;
37 using System.Runtime.InteropServices;
43 namespace System.Security.Cryptography.Xml {
45 public class XmlDsigExcC14NTransform : Transform {
47 private Type[] output;
48 private XmlCanonicalizer canonicalizer;
50 private string inclusiveNamespacesPrefixList;
52 public XmlDsigExcC14NTransform ()
57 public XmlDsigExcC14NTransform (bool includeComments)
58 : this (includeComments, null)
62 public XmlDsigExcC14NTransform (string inclusiveNamespacesPrefixList)
63 : this (false, inclusiveNamespacesPrefixList)
67 public XmlDsigExcC14NTransform (bool includeComments, string inclusiveNamespacesPrefixList)
70 Algorithm = XmlSignature.AlgorithmNamespaces.XmlDsigExcC14NWithCommentsTransform;
72 Algorithm = XmlSignature.AlgorithmNamespaces.XmlDsigExcC14NTransform;
73 this.inclusiveNamespacesPrefixList = inclusiveNamespacesPrefixList;
74 canonicalizer = new XmlCanonicalizer (includeComments, true, PropagatedNamespaces);
77 public string InclusiveNamespacesPrefixList {
78 get { return inclusiveNamespacesPrefixList; }
79 set { inclusiveNamespacesPrefixList = value; }
82 public override Type[] InputTypes {
86 input[0] = typeof (System.IO.Stream);
87 input[1] = typeof (System.Xml.XmlDocument);
88 input[2] = typeof (System.Xml.XmlNodeList);
94 public override Type[] OutputTypes {
97 output = new Type [1];
98 output[0] = typeof (System.IO.Stream);
104 protected override XmlNodeList GetInnerXml ()
106 return null; // THIS IS DOCUMENTED AS SUCH
109 public override byte[] GetDigestedOutput (HashAlgorithm hash)
111 // no null check, MS throws a NullReferenceException here
112 return hash.ComputeHash ((Stream) GetOutput ());
115 public override object GetOutput ()
120 public override object GetOutput (Type type)
122 if (type == typeof (Stream))
124 throw new ArgumentException ("type");
127 public override void LoadInnerXml (XmlNodeList nodeList)
129 // documented as not changing the state of the transform
132 public override void LoadInput (object obj)
134 canonicalizer.InclusiveNamespacesPrefixList = InclusiveNamespacesPrefixList;
135 // possible input: Stream, XmlDocument, and XmlNodeList
136 Stream stream = (obj as Stream);
137 if (stream != null) {
138 XmlDocument doc = new XmlDocument ();
139 doc.PreserveWhitespace = true; // REALLY IMPORTANT
140 doc.XmlResolver = GetResolver ();
141 doc.Load (new XmlSignatureStreamReader (new StreamReader (stream)));
142 // doc.Load ((Stream) obj);
143 s = canonicalizer.Canonicalize (doc);
147 XmlDocument xd = (obj as XmlDocument);
149 s = canonicalizer.Canonicalize (xd);
153 XmlNodeList nl = (obj as XmlNodeList);
155 s = canonicalizer.Canonicalize (nl);
158 throw new ArgumentException ("obj");