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                 [Obsolete]
  85                 public virtual ulong CurrentSize {
  86                         get {
  87                                 throw new InvalidOperationException (
  88                                         Locale.GetText ("IsolatedStorage does not have a preset CurrentSize."));
  89                         }
  90                 }
  91
  92                 public object DomainIdentity {
  93                         [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
  94                         get {
  95                                 if ((storage_scope & IsolatedStorageScope.Domain) == 0) {
  96                                         throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope."));
  97                                 }
  98                                 if (_domainIdentity == null)
  99                                         throw new InvalidOperationException (Locale.GetText ("Identity unavailable."));
 100                                 return _domainIdentity;
 101                         }
 102                 }
 103
 104                 [CLSCompliant (false)]
 105                 [Obsolete]
 106                 public virtual ulong MaximumSize {
 107                         get {
 108                                 throw new InvalidOperationException (
 109                                         Locale.GetText ("IsolatedStorage does not have a preset MaximumSize."));
 110                         }
 111                 }
 112
 113                 public IsolatedStorageScope Scope {
 114                         get { return storage_scope; }
 115                 }
 116
 117                 [ComVisible (false)]
 118                 public virtual long AvailableFreeSpace {
 119                         get {
 120                                 throw new InvalidOperationException ("This property is not defined for this store.");
 121                         }
 122                 }
 123
 124                 [ComVisible (false)]
 125                 public virtual long Quota {
 126                         get {
 127                                 throw new InvalidOperationException ("This property is not defined for this store.");
 128                         }
 129                 }
 130
 131                 [ComVisible (false)]
 132                 public virtual long UsedSize {
 133                         get {
 134                                 throw new InvalidOperationException ("This property is not defined for this store.");
 135                         }
 136                 }
 137
 138                 protected virtual char SeparatorExternal {
 139                         get { return System.IO.Path.DirectorySeparatorChar; }
 140                 }
 141
 142                 protected virtual char SeparatorInternal {
 143                         get { return '.'; }
 144                 }
 145
 146                 // Methods
 147                 protected abstract IsolatedStoragePermission GetPermission (PermissionSet ps);
 148
 149                 protected void InitStore (IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
 150                 {
 151                         // I know it's useless - but it's tested as such...
 152                         switch (scope) {
 153                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User):
 154                         case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User | IsolatedStorageScope.Domain):
 155                                 throw new NotImplementedException (scope.ToString ());
 156                         default:
 157                                 // invalid (incomplete) scope
 158                                 throw new ArgumentException (scope.ToString ());
 159                         }
 160                 }
 161
 162                 [MonoTODO ("requires manifest support")]
 163                 protected void InitStore (IsolatedStorageScope scope, Type appEvidenceType)
 164                 {
 165 #if !MOBILE
 166                         if (AppDomain.CurrentDomain.ApplicationIdentity == null)
 167                                 throw new IsolatedStorageException (Locale.GetText ("No ApplicationIdentity available for AppDomain."));
 168
 169                         if (appEvidenceType == null) {
 170                                 // TODO - Choose evidence
 171                         }
 172 #endif
 173
 174                         // no exception here because this can work without CAS
 175                         storage_scope = scope;
 176                 }
 177                 public abstract void Remove ();
 178
 179                 [ComVisible (false)]
 180                 public virtual bool IncreaseQuotaTo (long newQuotaSize)
 181                 {
 182                         return false;
 183                 }
 184         }
 185 }