class/System.ServiceModel/System.ServiceModel.Channels/WSSignedXml.cs

   1 //
   2 // WSSignedXml.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2007 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Security.Cryptography.Xml;
  30 using System.Xml;
  31
  32 namespace System.ServiceModel.Channels
  33 {
  34         // See http://blogs.msdn.com/shawnfa/archive/2004/04/05/108098.aspx :)
  35         class WSSignedXml : SignedXml
  36         {
  37                 public WSSignedXml ()
  38                 {
  39                 }
  40
  41                 public WSSignedXml (XmlDocument doc)
  42                         : base (doc)
  43                 {
  44                 }
  45
  46                 public override XmlElement GetIdElement (XmlDocument doc, string id)
  47                 {
  48                         return SearchChildren (doc, id);
  49                 }
  50
  51                 XmlElement SearchChildren (XmlNode node, string id)
  52                 {
  53                         for (XmlNode n = node.FirstChild; n != null; n = n.NextSibling) {
  54                                 XmlElement el = n as XmlElement;
  55                                 if (el == null)
  56                                         continue;
  57                                 if (el.GetAttribute ("Id", Constants.WsuNamespace) == id || el.GetAttribute ("Id") == id)
  58                                         return el;
  59                                 XmlElement el2 = SearchChildren (el, id);
  60                                 if (el2 != null)
  61                                         return el2;
  62                         }
  63                         return null;
  64                 }
  65         }
  66 }