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//
// System.Security.Permissions.KeyContainerPermission.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 {
[Serializable]
[ComVisible (true)]
public sealed class KeyContainerPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission {
private KeyContainerPermissionAccessEntryCollection _accessEntries;
private KeyContainerPermissionFlags _flags;
private const int version = 1;
// Constructors
public KeyContainerPermission (PermissionState state)
{
if (CheckPermissionState (state, true) == PermissionState.Unrestricted) {
_flags = KeyContainerPermissionFlags.AllFlags;
}
}
public KeyContainerPermission (KeyContainerPermissionFlags flags)
{
SetFlags (flags);
}
public KeyContainerPermission (KeyContainerPermissionFlags flags, KeyContainerPermissionAccessEntry[] accessList)
{
SetFlags (flags);
if (accessList != null) {
foreach (KeyContainerPermissionAccessEntry kcpae in accessList) {
_accessEntries.Add (kcpae);
}
}
}
// Properties
public KeyContainerPermissionAccessEntryCollection AccessEntries {
get { return _accessEntries; }
}
public KeyContainerPermissionFlags Flags {
get { return _flags; }
}
// Methods
public override IPermission Copy ()
{
if (_accessEntries.Count == 0)
return new KeyContainerPermission (_flags);
KeyContainerPermissionAccessEntry[] list = new KeyContainerPermissionAccessEntry [_accessEntries.Count];
_accessEntries.CopyTo (list, 0);
return new KeyContainerPermission (_flags, list);
}
[MonoTODO ("(2.0) missing support for AccessEntries")]
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)
if (IsUnrestricted (securityElement)) {
_flags = KeyContainerPermissionFlags.AllFlags;
}
else {
// ???
_flags = (KeyContainerPermissionFlags) Enum.Parse (
typeof (KeyContainerPermissionFlags), securityElement.Attribute ("Flags"));
}
}
[MonoTODO ("(2.0)")]
public override IPermission Intersect (IPermission target)
{
return null;
}
[MonoTODO ("(2.0)")]
public override bool IsSubsetOf (IPermission target)
{
return false;
}
public bool IsUnrestricted ()
{
return (_flags == KeyContainerPermissionFlags.AllFlags);
}
[MonoTODO ("(2.0) missing support for AccessEntries")]
public override SecurityElement ToXml ()
{
SecurityElement e = Element (version);
if (IsUnrestricted ()) {
e.AddAttribute ("Unrestricted", "true");
} else {
// ...
}
return e;
}
public override IPermission Union (IPermission target)
{
KeyContainerPermission kcp = Cast (target);
if (kcp == null)
return Copy ();
KeyContainerPermissionAccessEntryCollection kcpaec = new KeyContainerPermissionAccessEntryCollection ();
// copy first group
foreach (KeyContainerPermissionAccessEntry kcpae in _accessEntries) {
kcpaec.Add (kcpae);
}
// copy second group...
foreach (KeyContainerPermissionAccessEntry kcpae in kcp._accessEntries) {
// ... but only if not present in first group
if (_accessEntries.IndexOf (kcpae) == -1)
kcpaec.Add (kcpae);
}
if (kcpaec.Count == 0)
return new KeyContainerPermission ((_flags | kcp._flags));
KeyContainerPermissionAccessEntry[] list = new KeyContainerPermissionAccessEntry [kcpaec.Count];
kcpaec.CopyTo (list, 0);
return new KeyContainerPermission ((_flags | kcp._flags), list);
}
// IBuiltInPermission
int IBuiltInPermission.GetTokenIndex ()
{
return (int) BuiltInToken.KeyContainer;
}
// helpers
private void SetFlags (KeyContainerPermissionFlags flags)
{
if ((flags & KeyContainerPermissionFlags.AllFlags) != 0) {
string msg = String.Format (Locale.GetText ("Invalid enum {0}"), flags);
throw new ArgumentException (msg, "KeyContainerPermissionFlags");
}
_flags = flags;
}
private KeyContainerPermission Cast (IPermission target)
{
if (target == null)
return null;
KeyContainerPermission kcp = (target as KeyContainerPermission);
if (kcp == null) {
ThrowInvalidPermission (target, typeof (KeyContainerPermission));
}
return kcp;
}
}
}
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