mcs/class/corlib/System.Security.AccessControl/QualifiedAce.cs

   1 //
   2 // System.Security.AccessControl.QualifiedAce implementation
   3 //
   4 // Authors:
   5 //      Dick Porter  <dick@ximian.com>
   6 //      Atsushi Enomoto  <atsushi@ximian.com>
   7 //      Kenneth Bell
   8 //
   9 // Copyright (C) 2006-2007 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 namespace System.Security.AccessControl {
  32         public abstract class QualifiedAce : KnownAce
  33         {
  34                 private byte [] opaque;
  35
  36                 internal QualifiedAce (AceType type, AceFlags flags,
  37                                        byte[] opaque)
  38                         : base (type, flags)
  39                 {
  40                         SetOpaque (opaque);
  41                 }
  42
  43                 internal QualifiedAce (byte[] binaryForm, int offset)
  44                         : base(binaryForm, offset)
  45                 {
  46                 }
  47
  48                 public AceQualifier AceQualifier {
  49                         get {
  50                                 switch(AceType)
  51                                 {
  52                                 case AceType.AccessAllowed:
  53                                 case AceType.AccessAllowedCallback:
  54                                 case AceType.AccessAllowedCallbackObject:
  55                                 case AceType.AccessAllowedCompound:
  56                                 case AceType.AccessAllowedObject:
  57                                         return AceQualifier.AccessAllowed;
  58
  59                                 case AceType.AccessDenied:
  60                                 case AceType.AccessDeniedCallback:
  61                                 case AceType.AccessDeniedCallbackObject:
  62                                 case AceType.AccessDeniedObject:
  63                                         return AceQualifier.AccessDenied;
  64
  65                                 case AceType.SystemAlarm:
  66                                 case AceType.SystemAlarmCallback:
  67                                 case AceType.SystemAlarmCallbackObject:
  68                                 case AceType.SystemAlarmObject:
  69                                         return AceQualifier.SystemAlarm;
  70
  71                                 case AceType.SystemAudit:
  72                                 case AceType.SystemAuditCallback:
  73                                 case AceType.SystemAuditCallbackObject:
  74                                 case AceType.SystemAuditObject:
  75                                         return AceQualifier.SystemAudit;
  76
  77                                 default:
  78                                         throw new ArgumentException("Unrecognised ACE type: " + AceType);
  79                                 }
  80                         }
  81                 }
  82
  83                 public bool IsCallback {
  84                         get {
  85                                 return AceType == AceType.AccessAllowedCallback
  86                                         || AceType == AceType.AccessAllowedCallbackObject
  87                                         || AceType == AceType.AccessDeniedCallback
  88                                         || AceType == AceType.AccessDeniedCallbackObject
  89                                         || AceType == AceType.SystemAlarmCallback
  90                                         || AceType == AceType.SystemAlarmCallbackObject
  91                                         || AceType == AceType.SystemAuditCallback
  92                                         || AceType == AceType.SystemAuditCallbackObject;
  93                         }
  94                 }
  95
  96                 public int OpaqueLength {
  97                         get {
  98                                 if (opaque == null)
  99                                         return  0;
 100                                 return opaque.Length;
 101                         }
 102                 }
 103
 104                 public byte[] GetOpaque ()
 105                 {
 106                         if (opaque == null)
 107                                 return null;
 108                         return (byte []) opaque.Clone();
 109                 }
 110
 111                 public void SetOpaque (byte[] opaque)
 112                 {
 113                         if (opaque == null)
 114                                 this.opaque = null;
 115                         else
 116                                 this.opaque = (byte []) opaque.Clone();
 117                 }
 118         }
 119 }
 120