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

   1 //
   2 // System.Security.Permissions.ReflectionPermissionAttribute.cs
   3 //
   4 // Authors
   5 //      Duncan Mak <duncan@ximian.com>
   6 //      Sebastien Pouliot <spouliot@motus.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 #if NET_2_0
  37         [ComVisible (true)]
  38 #endif
  39         [AttributeUsage (AttributeTargets.Assembly | AttributeTargets.Class |
  40                          AttributeTargets.Struct | AttributeTargets.Constructor |
  41                          AttributeTargets.Method, AllowMultiple=true, Inherited=false)]
  42         [Serializable]
  43         public sealed class ReflectionPermissionAttribute : CodeAccessSecurityAttribute {
  44
  45                 // Fields
  46                 private ReflectionPermissionFlag flags;
  47                 private bool memberAccess;
  48                 private bool reflectionEmit;
  49                 private bool typeInfo;
  50
  51                 //Constructor
  52                 public ReflectionPermissionAttribute (SecurityAction action) : base (action) {}
  53
  54                 // Properties
  55                 public ReflectionPermissionFlag Flags
  56                 {
  57                         get { return flags; }
  58                         set {
  59                                 flags = value;
  60                                 memberAccess = ((flags & ReflectionPermissionFlag.MemberAccess) == ReflectionPermissionFlag.MemberAccess);
  61                                 reflectionEmit = ((flags & ReflectionPermissionFlag.ReflectionEmit) == ReflectionPermissionFlag.ReflectionEmit);
  62                                 typeInfo = ((flags & ReflectionPermissionFlag.TypeInformation) == ReflectionPermissionFlag.TypeInformation);
  63                         }
  64                 }
  65
  66                 public bool MemberAccess
  67                 {
  68                         get { return memberAccess; }
  69                         set {
  70                                 if (value)
  71                                         flags |= ReflectionPermissionFlag.MemberAccess;
  72                                 else
  73                                         flags -= ReflectionPermissionFlag.MemberAccess;
  74                                 memberAccess = value;
  75                         }
  76                 }
  77
  78                 public bool ReflectionEmit
  79                 {
  80                         get { return reflectionEmit; }
  81                         set {
  82                                 if (value)
  83                                         flags |= ReflectionPermissionFlag.ReflectionEmit;
  84                                 else
  85                                         flags -= ReflectionPermissionFlag.ReflectionEmit;
  86                                 reflectionEmit = value;
  87                         }
  88                 }
  89
  90 #if NET_2_0
  91                 [Obsolete ("not enforced in 2.0+")]
  92 #endif
  93                 public bool TypeInformation
  94                 {
  95                         get { return typeInfo; }
  96                         set {
  97                                 if (value)
  98                                         flags |= ReflectionPermissionFlag.TypeInformation;
  99                                 else
 100                                         flags -= ReflectionPermissionFlag.TypeInformation;
 101                                 typeInfo = value;
 102                         }
 103                 }
 104
 105                 // Methods
 106                 public override IPermission CreatePermission ()
 107                 {
 108                         ReflectionPermission perm = null;
 109                         if (this.Unrestricted)
 110                                 perm = new ReflectionPermission (PermissionState.Unrestricted);
 111                         else
 112                                 perm = new ReflectionPermission (flags);
 113                         return perm;
 114                 }
 115         }
 116 }