mcs/class/System.Security/System.Security.Cryptography.Xml/KeyInfoRetrievalMethod.cs

   1 //
   2 // KeyInfoRetrievalMethod.cs - KeyInfoRetrievalMethod implementation for XML Signature
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //      Tim Coleman (tim@timcoleman.com)
   7 //
   8 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   9 // Copyright (C) Tim Coleman, 2004
  10 //
  11
  12 using System.Xml;
  13
  14 namespace System.Security.Cryptography.Xml {
  15
  16         public class KeyInfoRetrievalMethod : KeyInfoClause {
  17
  18                 private string URI;
  19                 private XmlElement element;
  20
  21 #if NET_2_0
  22                 string type;
  23 #endif
  24
  25                 public KeyInfoRetrievalMethod () {}
  26
  27                 public KeyInfoRetrievalMethod (string strUri)
  28                 {
  29                         URI = strUri;
  30                 }
  31
  32 #if NET_2_0
  33                 public KeyInfoRetrievalMethod (string strUri, string strType)
  34                         : this (strUri)
  35                 {
  36                         Type = strType;
  37                 }
  38
  39                 public string Type {
  40                         get { return type; }
  41                         set {
  42                                 element = null;
  43                                 type = value;
  44                         }
  45                 }
  46 #endif
  47
  48                 public string Uri {
  49                         get { return URI; }
  50                         set {
  51                                 element = null;
  52                                 URI = value;
  53                         }
  54                 }
  55
  56
  57                 public override XmlElement GetXml ()
  58                 {
  59                         if (element != null)
  60                                 return element;
  61
  62                         XmlDocument document = new XmlDocument ();
  63                         XmlElement xel = document.CreateElement (XmlSignature.ElementNames.RetrievalMethod, XmlSignature.NamespaceURI);
  64                         if (URI != null)
  65                                 xel.SetAttribute (XmlSignature.AttributeNames.URI, URI);
  66 #if NET_2_0
  67                         if (Type != null)
  68                                 xel.SetAttribute (XmlSignature.AttributeNames.Type, Type);
  69 #endif
  70                         return xel;
  71                 }
  72
  73                 public override void LoadXml (XmlElement value)
  74                 {
  75                         if (value == null)
  76                                 throw new ArgumentNullException ();
  77
  78                         if ((value.LocalName != XmlSignature.ElementNames.RetrievalMethod) || (value.NamespaceURI != XmlSignature.NamespaceURI)) {
  79                                 URI = ""; // not null - so we return URI="" as attribute !!!
  80                         } else {
  81                                 URI = value.Attributes [XmlSignature.AttributeNames.URI].Value;
  82 #if NET_2_0
  83                                 if (value.HasAttribute (XmlSignature.AttributeNames.Type))
  84                                         Type = value.Attributes [XmlSignature.AttributeNames.Type].Value;
  85 #endif
  86                                 element = value;
  87                         }
  88                 }
  89         }
  90 }