mcs/class/System.Web/System.Web.Configuration_2.0/MachineKeySection.cs

   1 //
   2 // System.Web.Configuration.MachineKeySection
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@ximian.com)
   6 //
   7 // (c) Copyright 2005 Novell, Inc (http://www.novell.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.ComponentModel;
  33 using System.Configuration;
  34 using System.Security.Cryptography;
  35
  36 #if NET_2_0
  37
  38 namespace System.Web.Configuration {
  39
  40         public sealed class MachineKeySection : ConfigurationSection
  41         {
  42                 static ConfigurationProperty decryptionProp;
  43                 static ConfigurationProperty decryptionKeyProp;
  44                 static ConfigurationProperty validationProp;
  45                 static ConfigurationProperty validationKeyProp;
  46                 static ConfigurationPropertyCollection properties;
  47
  48                 static MachineKeySection ()
  49                 {
  50                         decryptionProp = new ConfigurationProperty ("decryption", typeof (string), "Auto",
  51                                                                     PropertyHelper.WhiteSpaceTrimStringConverter,
  52                                                                     PropertyHelper.NonEmptyStringValidator,
  53                                                                     ConfigurationPropertyOptions.None);
  54                         decryptionKeyProp = new ConfigurationProperty ("decryptionKey", typeof (string), "AutoGenerate,IsolateApps",
  55                                                                        PropertyHelper.WhiteSpaceTrimStringConverter,
  56                                                                        PropertyHelper.NonEmptyStringValidator,
  57                                                                        ConfigurationPropertyOptions.None);
  58                         validationProp = new ConfigurationProperty ("validation", typeof (MachineKeyValidation), MachineKeyValidation.SHA1,
  59                                                                     new MachineKeyValidationConverter (),
  60                                                                     PropertyHelper.DefaultValidator,
  61                                                                     ConfigurationPropertyOptions.None);
  62                         validationKeyProp = new ConfigurationProperty ("validationKey", typeof (string), "AutoGenerate,IsolateApps",
  63                                                                        PropertyHelper.WhiteSpaceTrimStringConverter,
  64                                                                        PropertyHelper.NonEmptyStringValidator,
  65                                                                        ConfigurationPropertyOptions.None);
  66
  67                         properties = new ConfigurationPropertyCollection ();
  68
  69                         properties.Add (decryptionProp);
  70                         properties.Add (decryptionKeyProp);
  71                         properties.Add (validationProp);
  72                         properties.Add (validationKeyProp);
  73
  74                         AutoGenKeys ();
  75                 }
  76
  77                 [MonoTODO]
  78                 protected override void Reset (ConfigurationElement parentElement)
  79                 {
  80                         base.Reset (parentElement);
  81                 }
  82
  83                 [TypeConverter (typeof (WhiteSpaceTrimStringConverter))]
  84                 [StringValidator (MinLength = 1)]
  85                 [ConfigurationProperty ("decryption", DefaultValue = "Auto")]
  86                 public string Decryption {
  87                         get { return (string) base [decryptionProp];}
  88                         set { base[decryptionProp] = value; }
  89                 }
  90
  91                 [TypeConverter (typeof (WhiteSpaceTrimStringConverter))]
  92                 [StringValidator (MinLength = 1)]
  93                 [ConfigurationProperty ("decryptionKey", DefaultValue = "AutoGenerate,IsolateApps")]
  94                 public string DecryptionKey {
  95                         get { return (string) base [decryptionKeyProp];}
  96                         set { base[decryptionKeyProp] = value; }
  97                 }
  98
  99                 [TypeConverter (typeof (MachineKeyValidationConverter))]
 100                 [ConfigurationProperty ("validation", DefaultValue = "SHA1")]
 101                 public MachineKeyValidation Validation {
 102                         get { return (MachineKeyValidation) base [validationProp];}
 103                         set { base[validationProp] = value; }
 104                 }
 105
 106                 [TypeConverter (typeof (WhiteSpaceTrimStringConverter))]
 107                 [StringValidator (MinLength = 1)]
 108                 [ConfigurationProperty ("validationKey", DefaultValue = "AutoGenerate,IsolateApps")]
 109                 public string ValidationKey {
 110                         get { return (string) base [validationKeyProp];}
 111                         set { base[validationKeyProp] = value; }
 112                 }
 113
 114                 protected override ConfigurationPropertyCollection Properties {
 115                         get { return properties; }
 116                 }
 117
 118 #region CompatabilityCode
 119                 static byte [] autogenerated;
 120                 static byte [] autogenerated_decrypt;
 121
 122                 static void AutoGenKeys ()
 123                 {
 124                         autogenerated = new byte [64];
 125                         RandomNumberGenerator rng = RandomNumberGenerator.Create ();
 126                         rng.GetBytes (autogenerated);
 127                         autogenerated_decrypt = new byte [64];
 128                         rng.GetBytes (autogenerated_decrypt);
 129                 }
 130
 131                 static byte ToHexValue (char c, bool high)
 132                 {
 133                         byte v;
 134                         if (c >= '0' && c <= '9')
 135                                 v = (byte) (c - '0');
 136                         else if (c >= 'a' && c <= 'f')
 137                                 v = (byte) (c - 'a' + 10);
 138                         else if (c >= 'A' && c <= 'F')
 139                                 v = (byte) (c - 'A' + 10);
 140                         else
 141                                 throw new ArgumentException ("Invalid hex character");
 142
 143                         if (high)
 144                                 v <<= 4;
 145
 146                         return v;
 147                 }
 148
 149                 internal static byte [] GetBytes (string key, int len)
 150                 {
 151                         byte [] result = new byte [len / 2];
 152                         for (int i = 0; i < len; i += 2)
 153                                 result [i / 2] = (byte) (ToHexValue (key [i], true) + ToHexValue (key [i + 1], false));
 154
 155                         return result;
 156                 }
 157
 158                 static byte [] MakeKey (string key, bool decryption) //, out bool isolate)
 159                 {
 160                         if (key == null || key.StartsWith ("AutoGenerate")){
 161                                 //isolate = key.IndexOf ("IsolateApps") != 1;
 162
 163                                 return (decryption) ? autogenerated_decrypt : autogenerated;
 164                         }
 165
 166                         //isolate = false;
 167
 168                         int len = key.Length;
 169                         if (len < 40 || len > 128 || (len % 2) == 1)
 170                                 throw new ArgumentException ("Invalid key length");
 171
 172                         return GetBytes (key, len);
 173                 }
 174
 175                 internal byte [] ValidationKeyBytes {
 176                         get { return MakeKey (ValidationKey, false); }
 177                 }
 178 #endregion
 179
 180         }
 181 }
 182
 183 #endif