mcs/class/corlib/System.IO.IsolatedStorage/IsolatedStorage.cs

   1 //
   2 // System.IO.IsolatedStorage.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 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.Reflection;
  33 using System.Runtime.InteropServices;
  34 using System.Security;
  35 using System.Security.Permissions;
  36 using System.Security.Policy;
  37
  38 namespace System.IO.IsolatedStorage {
  39
  40 #if NET_2_0
  41         [ComVisible (true)]
  42 #endif
  43         public abstract class IsolatedStorage : MarshalByRefObject {
  44
  45                 // Constructor
  46                 protected IsolatedStorage ()
  47                         : base ()
  48                 {
  49                 }
  50
  51                 internal IsolatedStorageScope storage_scope;
  52                 internal object _assemblyIdentity;
  53                 internal object _domainIdentity;
  54                 internal object _applicationIdentity;
  55
  56                 // Properties
  57
  58 #if NET_2_0
  59                 [MonoTODO ("requires manifest support")]
  60                 [ComVisible (false)]
  61                 public object ApplicationIdentity {
  62                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  63                         get {
  64                                 if ((storage_scope & IsolatedStorageScope.Application) == 0) {
  65                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  66                                 }
  67                                 if (_applicationIdentity == null)
  68                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
  69
  70                                 throw new NotImplementedException (Locale.GetText ("CAS related"));
  71                         }
  72                 }
  73 #endif
  74
  75                 public object AssemblyIdentity {
  76                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  77                         get {
  78 #if NET_2_0
  79                                 if ((storage_scope & IsolatedStorageScope.Assembly) == 0) {
  80                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  81                                 }
  82                                 if (_assemblyIdentity == null)
  83                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
  84 #endif
  85                                 return _assemblyIdentity;
  86                         }
  87                 }
  88
  89                 [CLSCompliant (false)]
  90                 public virtual ulong CurrentSize {
  91                         get {
  92                                 throw new InvalidOperationException (
  93                                         Locale.GetText ("IsolatedStorage does not have a preset CurrentSize."));
  94                         }
  95                 }
  96
  97                 public object DomainIdentity {
  98                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  99                         get {
 100                                 if ((storage_scope & IsolatedStorageScope.Domain) == 0) {
 101                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
 102                                 }
 103                                 if (_domainIdentity == null)
 104                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
 105                                 return _domainIdentity;
 106                         }
 107                 }
 108
 109                 [CLSCompliant (false)]
 110                 public virtual ulong MaximumSize {
 111                         get {
 112                                 throw new InvalidOperationException (
 113                                         Locale.GetText ("IsolatedStorage does not have a preset MaximumSize."));
 114                         }
 115                 }
 116
 117                 public IsolatedStorageScope Scope {
 118                         get { return storage_scope; }
 119                 }
 120
 121                 protected virtual char SeparatorExternal {
 122                         get { return System.IO.Path.DirectorySeparatorChar; }
 123                 }
 124
 125                 protected virtual char SeparatorInternal {
 126                         get { return '.'; }
 127                 }
 128
 129                 // Methods
 130                 protected abstract IsolatedStoragePermission GetPermission (PermissionSet ps);
 131
 132                 protected void InitStore (IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
 133                 {
 134                         // I know it's useless - but it's tested as such...
 135                         switch (scope) {
 136                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User):
 137                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User | IsolatedStorageScope.Domain):
 138                                 throw new NotImplementedException (scope.ToString ());
 139                         default:
 140                                 // invalid (incomplete) scope
 141                                 throw new ArgumentException (scope.ToString ());
 142                         }
 143                 }
 144 #if NET_2_0
 145                 [MonoTODO ("requires manifest support")]
 146                 protected void InitStore (IsolatedStorageScope scope, Type appEvidenceType)
 147                 {
 148                         if (AppDomain.CurrentDomain.ApplicationIdentity == null)
 149                                 throw new IsolatedStorageException (Locale.GetText ("No ApplicationIdentity available for AppDomain."));
 150
 151                         if (appEvidenceType == null) {
 152                                 // TODO - Choose evidence
 153                         }
 154
 155                         // no exception here because this can work without CAS
 156                         storage_scope = scope;
 157                 }
 158 #endif
 159                 public abstract void Remove ();
 160         }
 161 }