//
// System.Security.Permissions.IsolatedStorageFilePermission.cs
//
// Author
// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2003 Motus Technologies. http://www.motus.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.
//
using System.Runtime.InteropServices;
namespace System.Security.Permissions{
[Serializable]
[ComVisible (true)]
public sealed class IsolatedStorageFilePermission : IsolatedStoragePermission, IBuiltInPermission {
// Constructors
public IsolatedStorageFilePermission (PermissionState state)
: base (state)
{
}
// Properties
// Methods
public override IPermission Copy ()
{
IsolatedStorageFilePermission p = new IsolatedStorageFilePermission (PermissionState.None);
p.m_userQuota = m_userQuota;
p.m_machineQuota = m_machineQuota;
p.m_expirationDays = m_expirationDays;
p.m_permanentData = m_permanentData;
p.m_allowed = m_allowed;
return p;
}
public override IPermission Intersect (IPermission target)
{
IsolatedStorageFilePermission isfp = Cast (target);
if (isfp == null)
return null;
if (IsEmpty () && isfp.IsEmpty ())
return null;
IsolatedStorageFilePermission p = new IsolatedStorageFilePermission (PermissionState.None);
p.m_userQuota = (m_userQuota < isfp.m_userQuota) ? m_userQuota : isfp.m_userQuota;
p.m_machineQuota = (m_machineQuota < isfp.m_machineQuota) ? m_machineQuota : isfp.m_machineQuota;
p.m_expirationDays = (m_expirationDays < isfp.m_expirationDays) ? m_expirationDays : isfp.m_expirationDays;
p.m_permanentData = (m_permanentData && isfp.m_permanentData);
// UsageAllowed == Unrestricted is a special case handled by the property
p.UsageAllowed = (m_allowed < isfp.m_allowed) ? m_allowed : isfp.m_allowed;
return p;
}
public override bool IsSubsetOf (IPermission target)
{
IsolatedStorageFilePermission isfp = Cast (target);
if (isfp == null)
return IsEmpty ();
if (isfp.IsUnrestricted ())
return true;
if (m_userQuota > isfp.m_userQuota)
return false;
if (m_machineQuota > isfp.m_machineQuota)
return false;
if (m_expirationDays > isfp.m_expirationDays)
return false;
if (m_permanentData != isfp.m_permanentData)
return false;
if (m_allowed > isfp.m_allowed)
return false;
return true;
}
public override IPermission Union (IPermission target)
{
IsolatedStorageFilePermission isfp = Cast (target);
if (isfp == null)
return Copy ();
IsolatedStorageFilePermission p = new IsolatedStorageFilePermission (PermissionState.None);
p.m_userQuota = (m_userQuota > isfp.m_userQuota) ? m_userQuota : isfp.m_userQuota;
p.m_machineQuota = (m_machineQuota > isfp.m_machineQuota) ? m_machineQuota : isfp.m_machineQuota;
p.m_expirationDays = (m_expirationDays > isfp.m_expirationDays) ? m_expirationDays : isfp.m_expirationDays;
p.m_permanentData = (m_permanentData || isfp.m_permanentData);
// UsageAllowed == Unrestricted is a special case handled by the property
p.UsageAllowed = (m_allowed > isfp.m_allowed) ? m_allowed : isfp.m_allowed;
return p;
}
[MonoTODO ("(2.0) new override - something must have been added ???")]
[ComVisible (false)]
public override SecurityElement ToXml ()
{
return base.ToXml ();
}
// IBuiltInPermission
int IBuiltInPermission.GetTokenIndex ()
{
return (int) BuiltInToken.IsolatedStorageFile;
}
// helpers
private IsolatedStorageFilePermission Cast (IPermission target)
{
if (target == null)
return null;
IsolatedStorageFilePermission isfp = (target as IsolatedStorageFilePermission);
if (isfp == null) {
ThrowInvalidPermission (target, typeof (IsolatedStorageFilePermission));
}
return isfp;
}
}
}
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