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         [ComVisible (true)]
  41         public abstract class IsolatedStorage : MarshalByRefObject {
  42
  43                 // Constructor
  44                 protected IsolatedStorage ()
  45                         : base ()
  46                 {
  47                 }
  48
  49                 internal IsolatedStorageScope storage_scope;
  50                 internal object _assemblyIdentity;
  51                 internal object _domainIdentity;
  52                 internal object _applicationIdentity;
  53
  54                 // Properties
  55
  56                 [MonoTODO ("Does not currently use the manifest support")]
  57                 [ComVisible (false)]
  58                 public object ApplicationIdentity {
  59                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  60                         get {
  61                                 if ((storage_scope & IsolatedStorageScope.Application) == 0) {
  62                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  63                                 }
  64                                 if (_applicationIdentity == null)
  65                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
  66
  67                                 throw new NotImplementedException (Locale.GetText ("CAS related"));
  68                         }
  69                 }
  70
  71                 public object AssemblyIdentity {
  72                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  73                         get {
  74                                 if ((storage_scope & IsolatedStorageScope.Assembly) == 0) {
  75                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  76                                 }
  77                                 if (_assemblyIdentity == null)
  78                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
  79                                 return _assemblyIdentity;
  80                         }
  81                 }
  82
  83                 [CLSCompliant (false)]
  84 #if NET_4_0 || MOBILE
  85                 [Obsolete]
  86 #endif
  87                 public virtual ulong CurrentSize {
  88                         get {
  89                                 throw new InvalidOperationException (
  90                                         Locale.GetText ("IsolatedStorage does not have a preset CurrentSize."));
  91                         }
  92                 }
  93
  94                 public object DomainIdentity {
  95                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  96                         get {
  97                                 if ((storage_scope & IsolatedStorageScope.Domain) == 0) {
  98                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  99                                 }
 100                                 if (_domainIdentity == null)
 101                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
 102                                 return _domainIdentity;
 103                         }
 104                 }
 105
 106                 [CLSCompliant (false)]
 107 #if NET_4_0 || MOBILE
 108                 [Obsolete]
 109 #endif
 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 #if NET_4_0 || MOBILE
 122                 [ComVisible (false)]
 123                 public virtual long AvailableFreeSpace {
 124                         get {
 125                                 throw new InvalidOperationException ("This property is not defined for this store.");
 126                         }
 127                 }
 128
 129                 [ComVisible (false)]
 130                 public virtual long Quota {
 131                         get {
 132                                 throw new InvalidOperationException ("This property is not defined for this store.");
 133                         }
 134                 }
 135
 136                 [ComVisible (false)]
 137                 public virtual long UsedSize {
 138                         get {
 139                                 throw new InvalidOperationException ("This property is not defined for this store.");
 140                         }
 141                 }
 142 #endif
 143
 144                 protected virtual char SeparatorExternal {
 145                         get { return System.IO.Path.DirectorySeparatorChar; }
 146                 }
 147
 148                 protected virtual char SeparatorInternal {
 149                         get { return '.'; }
 150                 }
 151
 152                 // Methods
 153                 protected abstract IsolatedStoragePermission GetPermission (PermissionSet ps);
 154
 155                 protected void InitStore (IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
 156                 {
 157                         // I know it's useless - but it's tested as such...
 158                         switch (scope) {
 159                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User):
 160                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User | IsolatedStorageScope.Domain):
 161                                 throw new NotImplementedException (scope.ToString ());
 162                         default:
 163                                 // invalid (incomplete) scope
 164                                 throw new ArgumentException (scope.ToString ());
 165                         }
 166                 }
 167
 168                 [MonoTODO ("requires manifest support")]
 169                 protected void InitStore (IsolatedStorageScope scope, Type appEvidenceType)
 170                 {
 171 #if !MOBILE
 172                         if (AppDomain.CurrentDomain.ApplicationIdentity == null)
 173                                 throw new IsolatedStorageException (Locale.GetText ("No ApplicationIdentity available for AppDomain."));
 174
 175                         if (appEvidenceType == null) {
 176                                 // TODO - Choose evidence
 177                         }
 178 #endif
 179
 180                         // no exception here because this can work without CAS
 181                         storage_scope = scope;
 182                 }
 183                 public abstract void Remove ();
 184
 185 #if NET_4_0 || MOBILE
 186                 [ComVisible (false)]
 187                 public virtual bool IncreaseQuotaTo (long newQuotaSize)
 188                 {
 189                         return false;
 190                 }
 191 #endif
 192         }
 193 }