class/corlib/System.Security.Permissions/StrongNamePermissionAttribute.cs

   1 //
   2 // System.Security.Permissions.StrongNameIdentityPermissionAttribute.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak <duncan@ximian.com>
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 2002 Ximian, Inc.                        http://www.ximian.com
   9 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  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.Globalization;
  32 using System.Runtime.InteropServices;
  33
  34 namespace System.Security.Permissions {
  35
  36         [ComVisible (true)]
  37         [AttributeUsage (AttributeTargets.Assembly | AttributeTargets.Class |
  38                          AttributeTargets.Struct | AttributeTargets.Constructor |
  39                          AttributeTargets.Method, AllowMultiple=true, Inherited=false)]
  40         [Serializable]
  41         public sealed class StrongNameIdentityPermissionAttribute : CodeAccessSecurityAttribute {
  42
  43                 // Fields
  44                 private string name;
  45                 private string key;
  46                 private string version;
  47
  48                 // Constructor
  49                 public StrongNameIdentityPermissionAttribute (SecurityAction action)
  50                         : base (action)
  51                 {
  52                 }
  53
  54                 // Properties
  55                 public string Name {
  56                         get { return name; }
  57                         set { name = value; }
  58                 }
  59
  60                 public string PublicKey {
  61                         get { return key; }
  62                         set { key = value; }
  63                 }
  64
  65                 public string Version {
  66                         get { return version; }
  67                         set { version = value; }
  68                 }
  69
  70                 // Methods
  71                 public override IPermission CreatePermission ()
  72                 {
  73 #if NET_2_1
  74                         return null;
  75 #else
  76                         if (this.Unrestricted)
  77                                 return new StrongNameIdentityPermission (PermissionState.Unrestricted);
  78
  79                         if ((name == null) && (key == null) && (version == null))
  80                                 return new StrongNameIdentityPermission (PermissionState.None);
  81
  82                         if (key == null) {
  83                                 throw new ArgumentException (Locale.GetText (
  84                                         "PublicKey is required"));
  85                         }
  86                         StrongNamePublicKeyBlob blob = StrongNamePublicKeyBlob.FromString (key);
  87
  88                         Version v = null;
  89                         if (version != null)
  90                                 v = new Version (version);
  91
  92                         return new StrongNameIdentityPermission (blob, name, v);
  93 #endif
  94                 }
  95         }
  96 }