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.
36 using System
.Collections
;
38 using System
.Runtime
.InteropServices
;
44 namespace System
.Security
.Cryptography
.Xml
{
46 public class XmlDsigExcC14NTransform
: Transform
{
48 private Type
[] output
;
49 private XmlCanonicalizer canonicalizer
;
51 private string inclusiveNamespacesPrefixList
;
53 public XmlDsigExcC14NTransform ()
58 public XmlDsigExcC14NTransform (bool includeComments
)
59 : this (includeComments
, null)
63 public XmlDsigExcC14NTransform (string inclusiveNamespacesPrefixList
)
64 : this (false, inclusiveNamespacesPrefixList
)
68 public XmlDsigExcC14NTransform (bool includeComments
, string inclusiveNamespacesPrefixList
)
71 Algorithm
= XmlSignature
.AlgorithmNamespaces
.XmlDsigExcC14NWithCommentsTransform
;
73 Algorithm
= XmlSignature
.AlgorithmNamespaces
.XmlDsigExcC14NTransform
;
74 this.inclusiveNamespacesPrefixList
= inclusiveNamespacesPrefixList
;
75 canonicalizer
= new XmlCanonicalizer (includeComments
, true, PropagatedNamespaces
);
78 public string InclusiveNamespacesPrefixList
{
79 get { return inclusiveNamespacesPrefixList; }
80 set { inclusiveNamespacesPrefixList = value; }
83 public override Type
[] InputTypes
{
87 input
[0] = typeof (System
.IO
.Stream
);
88 input
[1] = typeof (System
.Xml
.XmlDocument
);
89 input
[2] = typeof (System
.Xml
.XmlNodeList
);
95 public override Type
[] OutputTypes
{
98 output
= new Type
[1];
99 output
[0] = typeof (System
.IO
.Stream
);
105 protected override XmlNodeList
GetInnerXml ()
107 return null; // THIS IS DOCUMENTED AS SUCH
111 public override byte[] GetDigestedOutput (HashAlgorithm hash
)
113 // no null check, MS throws a NullReferenceException here
114 return hash
.ComputeHash ((Stream
) GetOutput ());
118 public override object GetOutput ()
123 public override object GetOutput (Type type
)
125 if (type
== typeof (Stream
))
127 throw new ArgumentException ("type");
130 public override void LoadInnerXml (XmlNodeList nodeList
)
132 // documented as not changing the state of the transform
135 public override void LoadInput (object obj
)
137 canonicalizer
.InclusiveNamespacesPrefixList
= InclusiveNamespacesPrefixList
;
138 // possible input: Stream, XmlDocument, and XmlNodeList
139 Stream stream
= (obj
as Stream
);
140 if (stream
!= null) {
141 XmlDocument doc
= new XmlDocument ();
142 doc
.PreserveWhitespace
= true; // REALLY IMPORTANT
144 doc
.XmlResolver
= GetResolver ();
146 doc
.Load (new XmlSignatureStreamReader (new StreamReader (stream
)));
147 // doc.Load ((Stream) obj);
148 s
= canonicalizer
.Canonicalize (doc
);
152 XmlDocument xd
= (obj
as XmlDocument
);
154 s
= canonicalizer
.Canonicalize (xd
);
158 XmlNodeList nl
= (obj
as XmlNodeList
);
160 s
= canonicalizer
.Canonicalize (nl
);
164 throw new ArgumentException ("obj");
166 // note: there is no default are other types won't throw an exception