IsolatedStorage.cs :  » 2.6.4-mono-.net-core » System.IO » System » IO » IsolatedStorage » C# / CSharp Open Source

//
// System.IO.IsolatedStorage.cs
//
// Authors:
//  Duncan Mak (duncan@ximian.com)
//  Sebastien Pouliot  <sebastien@ximian.com>
//
// (C) Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#if !MOONLIGHT
using System.Globalization;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Security.Policy;

namespace System.IO.IsolatedStorage{

  [ComVisible (true)]
  public abstract class IsolatedStorage : MarshalByRefObject {

    // Constructor
    protected IsolatedStorage ()
      : base ()
    {
    }

                internal IsolatedStorageScope storage_scope;
    internal object _assemblyIdentity;
    internal object _domainIdentity;
    internal object _applicationIdentity;

    // Properties

    [MonoTODO ("Does not currently use the manifest support")]
    [ComVisible (false)]
    public object ApplicationIdentity {
      [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
      get {
        if ((storage_scope & IsolatedStorageScope.Application) == 0) {
          throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope.")); 
        }
        if (_applicationIdentity == null)
          throw new InvalidOperationException (Locale.GetText ("Identity unavailable.")); 

        throw new NotImplementedException (Locale.GetText ("CAS related")); 
      }
    }

    public object AssemblyIdentity {
      [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
      get {
        if ((storage_scope & IsolatedStorageScope.Assembly) == 0) {
          throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope.")); 
        }
        if (_assemblyIdentity == null)
          throw new InvalidOperationException (Locale.GetText ("Identity unavailable.")); 
        return _assemblyIdentity;
      }
    }

    [CLSCompliant (false)]
#if NET_4_0
    [Obsolete]
#endif
    public virtual ulong CurrentSize {
      get {
        throw new InvalidOperationException (
          Locale.GetText ("IsolatedStorage does not have a preset CurrentSize."));
      }
    }

    public object DomainIdentity {
      [SecurityPermission (SecurityAction.Demand, ControlPolicy=true)]
      get {
        if ((storage_scope & IsolatedStorageScope.Domain) == 0) {
          throw new InvalidOperationException (Locale.GetText ("Invalid Isolation Scope.")); 
        }
        if (_domainIdentity == null)
          throw new InvalidOperationException (Locale.GetText ("Identity unavailable.")); 
        return _domainIdentity;
      }
    }

    [CLSCompliant (false)]
#if NET_4_0
    [Obsolete]
#endif
    public virtual ulong MaximumSize {
      get {
        throw new InvalidOperationException (
          Locale.GetText ("IsolatedStorage does not have a preset MaximumSize."));
      }
    }

    public IsolatedStorageScope Scope {
      get { return storage_scope; }
    }

    protected virtual char SeparatorExternal {
      get { return System.IO.Path.DirectorySeparatorChar; }
    }

    protected virtual char SeparatorInternal {
      get { return '.'; }
    }

    // Methods
    protected abstract IsolatedStoragePermission GetPermission (PermissionSet ps);

    protected void InitStore (IsolatedStorageScope scope, Type domainEvidenceType, Type assemblyEvidenceType)
    {
      // I know it's useless - but it's tested as such...
      switch (scope) {
      case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User):
      case (IsolatedStorageScope.Assembly | IsolatedStorageScope.User | IsolatedStorageScope.Domain):
        throw new NotImplementedException (scope.ToString ());
      default:
        // invalid (incomplete) scope
        throw new ArgumentException (scope.ToString ());
      }
    }

    [MonoTODO ("requires manifest support")]
    protected void InitStore (IsolatedStorageScope scope, Type appEvidenceType)
    {
      if (AppDomain.CurrentDomain.ApplicationIdentity == null)
        throw new IsolatedStorageException (Locale.GetText ("No ApplicationIdentity available for AppDomain."));

      if (appEvidenceType == null) {
        // TODO - Choose evidence
      }

      // no exception here because this can work without CAS
      storage_scope = scope;
    }
    public abstract void Remove ();
  }
}
/* MOONLIGHT */
#endif