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

   1 //
   2 // BootstrapContext.cs
   3 //
   4 // Author:
   5 //   Robert J. van der Boon (rjvdboon@gmail.com)
   6 //
   7 // Copyright (C) 2014 Robert J. van der Boon
   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.IO;
  30 using System.Runtime.Serialization;
  31 using System.Text;
  32 using System.Xml;
  33
  34 namespace System.IdentityModel.Tokens {
  35         [Serializable]
  36         public class BootstrapContext : ISerializable {
  37                 /// <summary>Gets the string that was used to initialize the context.</summary>
  38                 public string Token { get; private set; }
  39                 /// <summary>Gets the array that was used to initialize the context.</summary>
  40                 public byte [] TokenBytes { get; private set; }
  41                 /// <summary>Gets the security token that was used to initialize the context.</summary>
  42                 public SecurityToken SecurityToken { get; private set; }
  43                 /// <summary>Gets the token handler that was used to initialize the context.</summary>
  44                 public SecurityTokenHandler SecurityTokenHandler { get; private set; }
  45
  46                 /// <summary>Initializes a new instance of the <see cref="BootstrapContext"/> class by using the specified string.</summary>
  47                 public BootstrapContext (string token)
  48                 {
  49                         if (token == null)
  50                                 throw new ArgumentNullException ("token");
  51                         Token = token;
  52                 }
  53
  54                 /// <summary>Initializes a new instance of the <see cref="BootstrapContext"/> class by using the specified array.</summary>
  55                 public BootstrapContext (byte [] token)
  56                 {
  57                         if (token == null)
  58                                 throw new ArgumentNullException ("token");
  59                         TokenBytes = token;
  60                 }
  61
  62                 /// <summary>Initializes a new instance of the <see cref="BootstrapContext"/> class by using the specified security token and token handler.</summary>
  63                 public BootstrapContext (SecurityToken token, SecurityTokenHandler tokenHandler)
  64                 {
  65                         if (token == null)
  66                                 throw new ArgumentNullException ("token");
  67                         if (tokenHandler == null)
  68                                 throw new ArgumentNullException ("tokenHandler");
  69                         SecurityToken = token;
  70                         SecurityTokenHandler = tokenHandler;
  71                 }
  72
  73                 /// <summary>Initializes a new instance of the <see cref="BootstrapContext"/> class from a stream.</summary>
  74                 protected BootstrapContext (SerializationInfo info, StreamingContext context)
  75                 {
  76                         if (info == null)
  77                                 throw new ArgumentNullException ("info");
  78                         char type = info.GetChar ("K");
  79                         switch (type) {
  80                         case 'S':
  81                                 Token = info.GetString ("T");
  82                                 break;
  83                         case 'B':
  84                                 TokenBytes = (byte [])info.GetValue ("T", typeof (byte []));
  85                                 break;
  86                         case 'T':
  87                                 Token = Encoding.UTF8.GetString (Convert.FromBase64String (info.GetString ("T")));
  88                                 break;
  89                         }
  90                 }
  91
  92                 /// <summary>Populates the <see cref="SerializationInfo"/> with data needed to serialize the current <see cref="BootstrapContext"/> object.</summary>
  93                 public void GetObjectData (SerializationInfo info, StreamingContext context)
  94                 {
  95                         if (info == null)
  96                                 throw new ArgumentNullException ("info");
  97                         if (Token != null) {
  98                                 info.AddValue ("K", 'S');
  99                                 info.AddValue ("T", Token);
 100                         } else if (TokenBytes != null) {
 101                                 info.AddValue ("K", 'B');
 102                                 info.AddValue ("T", TokenBytes);
 103                         } else if (SecurityToken != null && SecurityTokenHandler != null) {
 104                                 info.AddValue ("K", 'T');
 105                                 using (var ms = new MemoryStream ())
 106                                 using (var streamWriter = new StreamWriter (ms, new UTF8Encoding (false)))
 107                                 using (var writer = XmlWriter.Create (streamWriter, new XmlWriterSettings { OmitXmlDeclaration = true })) {
 108                                         SecurityTokenHandler.WriteToken (writer, SecurityToken);
 109                                         writer.Flush ();
 110                                         info.AddValue ("T", Convert.ToBase64String (ms.ToArray ()));
 111                                 }
 112                         }
 113                 }
 114         }
 115 }