//
// System.Security.Permissions.GacIdentityPermission.cs
//
// Author:
// Sebastien Pouliot <sebastien@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.
//
using System.Globalization;
using System.Runtime.InteropServices;
namespace System.Security.Permissions{
[ComVisible (true)]
[Serializable]
public sealed class GacIdentityPermission : CodeAccessPermission, IBuiltInPermission {
private const int version = 1;
public GacIdentityPermission ()
{
}
public GacIdentityPermission (PermissionState state)
{
// false == do not allow Unrestricted for Identity Permissions
CheckPermissionState (state, false);
}
public override IPermission Copy ()
{
return (IPermission) new GacIdentityPermission ();
}
public override IPermission Intersect (IPermission target)
{
GacIdentityPermission gip = Cast (target);
if (gip == null)
return null;
return Copy ();
}
public override bool IsSubsetOf (IPermission target)
{
GacIdentityPermission gip = Cast (target);
return (gip != null);
}
public override IPermission Union (IPermission target)
{
Cast (target);
return Copy ();
}
public override void FromXml (SecurityElement securityElement)
{
// General validation in CodeAccessPermission
CheckSecurityElement (securityElement, "securityElement", version, version);
// Note: we do not (yet) care about the return value
// as we only accept version 1 (min/max values)
}
public override SecurityElement ToXml ()
{
SecurityElement se = Element (version);
return se;
}
// IBuildInPermission
int IBuiltInPermission.GetTokenIndex ()
{
return (int) BuiltInToken.GacIdentity;
}
// helpers
private GacIdentityPermission Cast (IPermission target)
{
if (target == null)
return null;
GacIdentityPermission uip = (target as GacIdentityPermission);
if (uip == null) {
ThrowInvalidPermission (target, typeof (GacIdentityPermission));
}
return uip;
}
}
}
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