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

   1 //
   2 // System.Security.Permissions.StrongNameIdentityPermissionAttribute.cs
   3 //
   4 // Duncan Mak <duncan@ximian.com>
   5 //
   6 // (C) 2002 Ximian, Inc.                        http://www.ximian.com
   7 //
   8
   9 //
  10 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33
  34 namespace System.Security.Permissions {
  35
  36         [AttributeUsage (AttributeTargets.Assembly | AttributeTargets.Class |
  37                          AttributeTargets.Struct | AttributeTargets.Constructor |
  38                          AttributeTargets.Method, AllowMultiple=true, Inherited=false)]
  39         [Serializable]
  40         public sealed class StrongNameIdentityPermissionAttribute : CodeAccessSecurityAttribute {
  41
  42                 // Fields
  43                 private string name;
  44                 private string key;
  45                 private string version;
  46
  47                 // Constructor
  48                 public StrongNameIdentityPermissionAttribute (SecurityAction action) : base (action) {}
  49
  50                 // Properties
  51                 public string Name
  52                 {
  53                         get { return name; }
  54                         set { name = value; }
  55                 }
  56
  57                 public string PublicKey
  58                 {
  59                         get { return key; }
  60                         set { key = value; }
  61                 }
  62
  63                 public string Version
  64                 {
  65                         get { return version; }
  66                         set { version = value; }
  67                 }
  68
  69                 // Methods
  70                 public override IPermission CreatePermission ()
  71                 {
  72                         if (this.Unrestricted)
  73                                 throw new ArgumentException ("Unsupported PermissionState.Unrestricted");
  74
  75                         StrongNameIdentityPermission perm = null;
  76                         if ((name == null) && (key == null) && (version == null))
  77                                 perm = new StrongNameIdentityPermission (PermissionState.None);
  78                         else {
  79                                 if (key == null)
  80                                         throw new ArgumentException ("PublicKey is required");
  81
  82                                 byte[] keyblob = Convert.FromBase64String (key);
  83                                 StrongNamePublicKeyBlob blob = new StrongNamePublicKeyBlob (keyblob);
  84
  85                                 Version v = null;
  86                                 if (version != null)
  87                                         v = new Version (version);
  88                                 else
  89                                         v = new Version ();
  90
  91                                 if (name == null)
  92                                         name = String.Empty;
  93
  94                                 perm = new StrongNameIdentityPermission (blob, name, v);
  95                         }
  96                         return perm;
  97                 }
  98         }
  99 }