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

   1 //
   2 // System.Security.Permissions.EnvironmentPermissionAttribute.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 // Portions Copyright (C) 2003 Motus Technologies (http://www.motus.com)
  10 // Copyright (C) 2004-2005 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.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 EnvironmentPermissionAttribute : CodeAccessSecurityAttribute {
  42
  43                 // Fields
  44                 private string read;
  45                 private string write;
  46
  47                 // Constructor
  48                 public EnvironmentPermissionAttribute (SecurityAction action) : base (action)
  49                 {
  50                 }
  51
  52                 // Properties
  53                 public string All {
  54                         get { throw new NotSupportedException ("All"); }
  55                         set {
  56                                 read = value;
  57                                 write = value;
  58                         }
  59                 }
  60
  61                 public string Read {
  62                         get { return read; }
  63                         set { read = value; }
  64                 }
  65
  66                 public string Write {
  67                         get { return write; }
  68                         set { write = value; }
  69                 }
  70
  71                 // Methods
  72                 public override IPermission CreatePermission ()
  73                 {
  74 #if NET_2_1
  75                         return null;
  76 #else
  77                         EnvironmentPermission perm = null;
  78                         if (this.Unrestricted)
  79                                 perm = new EnvironmentPermission (PermissionState.Unrestricted);
  80                         else {
  81                                 perm = new EnvironmentPermission (PermissionState.None);
  82                                 if (read != null)
  83                                         perm.AddPathList (EnvironmentPermissionAccess.Read, read);
  84                                 if (write != null)
  85                                         perm.AddPathList (EnvironmentPermissionAccess.Write, write);
  86                         }
  87                         return perm;
  88 #endif
  89                 }
  90         }
  91 }