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

   1 //
   2 // KeyInfo.cs - Xml Signature KeyInfo implementation
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 using System.Collections;
  11 using System.Xml;
  12
  13 namespace System.Security.Cryptography.Xml {
  14
  15         public class KeyInfo : IEnumerable {
  16
  17                 private ArrayList Info;
  18                 private string id;
  19
  20                 public KeyInfo()
  21                 {
  22                         Info = new ArrayList ();
  23                 }
  24
  25                 public int Count {
  26                         get { return Info.Count; }
  27                 }
  28
  29                 public string Id {
  30                         get { return id; }
  31                         set { id = value; }
  32                 }
  33
  34                 public void AddClause (KeyInfoClause clause)
  35                 {
  36                         Info.Add (clause);
  37                 }
  38
  39                 public IEnumerator GetEnumerator ()
  40                 {
  41                         return Info.GetEnumerator ();
  42                 }
  43
  44                 public IEnumerator GetEnumerator (Type requestedObjectType)
  45                 {
  46                         // Build a new ArrayList...
  47                         ArrayList TypeList = new ArrayList ();
  48                         IEnumerator e = Info.GetEnumerator ();
  49                         while (true) {
  50                                 // ...with all object of specified type...
  51                                 if ((e.Current).GetType().Equals (requestedObjectType))
  52                                         TypeList.Add (e.Current);
  53                                 if (!e.MoveNext ())
  54                                         break;
  55                         }
  56                         // ...and return its enumerator
  57                         return TypeList.GetEnumerator ();
  58                 }
  59
  60                 public XmlElement GetXml ()
  61                 {
  62                         XmlDocument document = new XmlDocument ();
  63                         XmlElement xel = document.CreateElement (XmlSignature.ElementNames.KeyInfo, XmlSignature.NamespaceURI);
  64                         // we add References afterward so we don't end up with extraneous
  65                         // xmlns="..." in each reference elements.
  66                         foreach (KeyInfoClause kic in Info) {
  67                                 XmlNode xn = kic.GetXml ();
  68                                 XmlNode newNode = document.ImportNode (xn, true);
  69                                 xel.AppendChild (newNode);
  70                         }
  71                         return xel;
  72                 }
  73
  74                 public void LoadXml (XmlElement value)
  75                 {
  76                         if (value == null)
  77                                 throw new ArgumentNullException ("value");
  78
  79                         Id = value.Attributes ["Id"] != null ? value.GetAttribute ("Id") : null;
  80
  81                         if ((value.LocalName == XmlSignature.ElementNames.KeyInfo) && (value.NamespaceURI == XmlSignature.NamespaceURI)) {
  82                                 foreach (XmlNode n in value.ChildNodes) {
  83                                         if (n.NodeType != XmlNodeType.Element)
  84                                                 continue;
  85
  86                                         KeyInfoClause kic = null;
  87
  88                                         switch (n.LocalName) {
  89                                         case XmlSignature.ElementNames.KeyValue:
  90                                                 XmlNodeList xnl = n.ChildNodes;
  91                                                 if (xnl.Count > 0) {
  92                                                         // we must now treat the whitespace !
  93                                                         foreach (XmlNode m in xnl) {
  94                                                                 switch (m.LocalName) {
  95                                                                 case XmlSignature.ElementNames.DSAKeyValue:
  96                                                                         kic = (KeyInfoClause) new DSAKeyValue ();
  97                                                                         break;
  98                                                                 case XmlSignature.ElementNames.RSAKeyValue:
  99                                                                         kic = (KeyInfoClause) new RSAKeyValue ();
 100                                                                         break;
 101                                                                 }
 102                                                         }
 103                                                 }
 104                                                 break;
 105                                         case XmlSignature.ElementNames.KeyName:
 106                                                 kic = (KeyInfoClause) new KeyInfoName ();
 107                                                 break;
 108                                         case XmlSignature.ElementNames.RetrievalMethod:
 109                                                 kic = (KeyInfoClause) new KeyInfoRetrievalMethod ();
 110                                                 break;
 111                                         case XmlSignature.ElementNames.X509Data:
 112                                                 kic = (KeyInfoClause) new KeyInfoX509Data ();
 113                                                 break;
 114                                         case XmlSignature.ElementNames.RSAKeyValue:
 115                                                 kic = (KeyInfoClause) new RSAKeyValue ();
 116                                                 break;
 117                                         default:
 118                                                 kic = (KeyInfoClause) new KeyInfoNode ();
 119                                                 break;
 120                                         }
 121
 122                                         if (kic != null) {
 123                                                 kic.LoadXml ((XmlElement) n);
 124                                                 AddClause (kic);
 125                                         }
 126                                 }
 127                         }
 128                         // No check is performed on MS.NET...
 129                 }
 130         }
 131 }