mcs/class/System.IdentityModel/System.IdentityModel.Tokens/SamlEvidence.cs

   1 //
   2 // SamlEvidence.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2006 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.Collections.Generic;
  30 using System.Xml;
  31 using System.IdentityModel.Claims;
  32 using System.IdentityModel.Policy;
  33 using System.IdentityModel.Selectors;
  34
  35 namespace System.IdentityModel.Tokens
  36 {
  37         public class SamlEvidence
  38         {
  39                 public SamlEvidence ()
  40                 {
  41                 }
  42
  43                 public SamlEvidence (IEnumerable<string> assertionIdReferences)
  44                         : this (assertionIdReferences, new SamlAssertion [0])
  45                 {
  46                 }
  47
  48                 public SamlEvidence (IEnumerable<SamlAssertion> assertions)
  49                         : this (new string [0], assertions)
  50                 {
  51                 }
  52
  53                 public SamlEvidence (
  54                         IEnumerable<string> assertionIdReferences,
  55                         IEnumerable<SamlAssertion> assertions)
  56                 {
  57                         if (assertionIdReferences == null)
  58                                 throw new ArgumentException ("assertionIdReferences are null.");
  59                         if (assertions == null)
  60                                 throw new ArgumentException ("assertions are null.");
  61                         foreach (string r in assertionIdReferences) {
  62                                 if (r == null)
  63                                         throw new ArgumentException ("assertionIdReferences contain null item.");
  64                                 references.Add (r);
  65                         }
  66                         foreach (SamlAssertion a in assertions) {
  67                                 if (a == null)
  68                                         throw new ArgumentException ("assertions contain null item.");
  69                                 this.assertions.Add (a);
  70                         }
  71                 }
  72
  73                 bool is_readonly;
  74                 List<string> references = new List<string> ();
  75                 List<SamlAssertion> assertions = new List<SamlAssertion> ();
  76
  77                 public IList<string> AssertionIdReferences {
  78                         get { return references; }
  79                 }
  80
  81                 public IList<SamlAssertion> Assertions {
  82                         get { return assertions; }
  83                 }
  84
  85                 public bool IsReadOnly {
  86                         get { return is_readonly; }
  87                 }
  88
  89                 private void CheckReadOnly ()
  90                 {
  91                         if (IsReadOnly)
  92                                 throw new InvalidOperationException ("This SAML assertion is read-only.");
  93                 }
  94
  95                 public void MakeReadOnly ()
  96                 {
  97                         is_readonly = true;
  98                 }
  99
 100                 public virtual void ReadXml (XmlDictionaryReader reader,
 101                         SamlSerializer samlSerializer,
 102                         SecurityTokenSerializer keyInfoSerializer,
 103                         SecurityTokenResolver resolver)
 104                 {
 105                         if (reader == null)
 106                                 throw new ArgumentNullException ("reader");
 107                         if (samlSerializer == null)
 108                                 throw new ArgumentNullException ("samlSerializer");
 109                         references.Clear ();
 110                         assertions.Clear ();
 111
 112                         reader.ReadStartElement ("Evidence", SamlConstants.Namespace);
 113                         for (reader.MoveToContent ();
 114                              reader.NodeType == XmlNodeType.Element;
 115                              reader.MoveToContent ()) {
 116                                 if (reader.NamespaceURI != SamlConstants.Namespace)
 117                                         throw new SecurityTokenException (String.Format ("Invalid SAML Evidence element: element '{0}' in namespace '{1}' is unexpected.", reader.LocalName, reader.NamespaceURI));
 118                                 switch (reader.LocalName) {
 119                                 case "Assertion":
 120                                         SamlAssertion a = new SamlAssertion ();
 121                                         a.ReadXml (reader, samlSerializer, keyInfoSerializer, resolver);
 122                                         assertions.Add (a);
 123                                         break;
 124                                 case "AssertionIDReference":
 125                                         references.Add (reader.ReadElementContentAsString ());
 126                                         break;
 127                                 default:
 128                                         throw new SecurityTokenException (String.Format ("Invalid SAML Evidence element: SAML element '{0}' is unexpected.", reader.LocalName));
 129                                 }
 130                         }
 131                         reader.ReadEndElement ();
 132
 133                         if (references.Count == 0 && assertions.Count == 0)
 134                                 throw new SecurityTokenException ("At least either one of AssertionIDReference or Assertion must exist in SAML Evidence.");
 135                 }
 136
 137                 public virtual void WriteXml (XmlDictionaryWriter writer,
 138                         SamlSerializer samlSerializer,
 139                         SecurityTokenSerializer keyInfoSerializer)
 140                 {
 141                         if (writer == null)
 142                                 throw new ArgumentNullException ("writer");
 143                         if (samlSerializer == null)
 144                                 throw new ArgumentNullException ("samlSerializer");
 145                         if (references.Count == 0 && assertions.Count == 0)
 146                                 throw new SecurityTokenException ("At least either one of AssertionIDReference or Assertion must exist in SAML Evidence.");
 147
 148                         writer.WriteStartElement ("saml", "Evidence", SamlConstants.Namespace);
 149                         foreach (string s in references)
 150                                 writer.WriteElementString ("saml", "AssertionIDReference", SamlConstants.Namespace, s);
 151                         foreach (SamlAssertion a in assertions)
 152                                 a.WriteXml (writer, samlSerializer, keyInfoSerializer);
 153                         writer.WriteEndElement ();
 154                 }
 155         }
 156 }