//
// Authors:
// Tim Coleman <tim@timcoleman.com>
-// Sebastien Pouliot (spouliot@motus.com)
+// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2002, Tim Coleman
// Portions (C) 2003 Motus Technologies Inc. (http://www.motus.com)
-//
-
-//
-// Copyright (C) 2004 Novell, Inc (http://www.novell.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
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-using System;
+using System.Globalization;
+using System.Runtime.InteropServices;
namespace System.Security.Permissions {
+#if NET_2_0
+ [ComVisible (true)]
+#endif
[Serializable]
public sealed class ReflectionPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission {
- #region Fields
+ private const int version = 1;
ReflectionPermissionFlag flags;
- PermissionState state;
-
- #endregion // Fields
- #region Constructors
public ReflectionPermission (PermissionState state)
{
- switch (state) {
- case PermissionState.None:
- flags = ReflectionPermissionFlag.NoFlags;
- break;
- case PermissionState.Unrestricted:
- flags = ReflectionPermissionFlag.AllFlags;
- break;
- default:
- throw new ArgumentException ("Invalid PermissionState");
- }
+ if (CheckPermissionState (state, true) == PermissionState.Unrestricted)
+ flags = ReflectionPermissionFlag.AllFlags;
+ else
+ flags = ReflectionPermissionFlag.NoFlags;
}
public ReflectionPermission (ReflectionPermissionFlag flag)
{
- flags = flag;
+ // reuse validation by the Flags property
+ Flags = flag;
}
- #endregion // Constructors
-
- #region Properties
public ReflectionPermissionFlag Flags {
get { return flags; }
- set { flags = value; }
- }
+ set {
+ if ((value & ReflectionPermissionFlag.AllFlags) != value) {
+ string msg = String.Format (Locale.GetText ("Invalid flags {0}"), value);
+ throw new ArgumentException (msg, "ReflectionPermissionFlag");
+ }
- #endregion // Properties
+ flags = value;
+ }
+ }
- #region Methods
public override IPermission Copy ()
{
public override void FromXml (SecurityElement esd)
{
- if (esd == null)
- throw new ArgumentNullException ("esd");
- if (esd.Tag != "IPermission")
- throw new ArgumentException ("not IPermission");
- if (!(esd.Attributes ["class"] as string).StartsWith ("System.Security.Permissions.ReflectionPermission"))
- throw new ArgumentException ("not ReflectionPermission");
- if ((esd.Attributes ["version"] as string) != "1")
- throw new ArgumentException ("wrong version");
-
- if ((esd.Attributes ["Unrestricted"] as string) == "true")
+ // General validation in CodeAccessPermission
+ CheckSecurityElement (esd, "esd", version, version);
+ // Note: we do not (yet) care about the return value
+ // as we only accept version 1 (min/max values)
+
+ if (IsUnrestricted (esd)) {
flags = ReflectionPermissionFlag.AllFlags;
+ }
else {
flags = ReflectionPermissionFlag.NoFlags;
string xmlFlags = (esd.Attributes ["Flags"] as string);
public override IPermission Intersect (IPermission target)
{
- if (target == null)
+ ReflectionPermission rp = Cast (target);
+ if (rp == null)
return null;
- if (! (target is ReflectionPermission))
- throw new ArgumentException ("wrong type");
- ReflectionPermission o = (ReflectionPermission) target;
if (IsUnrestricted ()) {
- if (o.Flags == ReflectionPermissionFlag.NoFlags)
+ if (rp.Flags == ReflectionPermissionFlag.NoFlags)
return null;
else
- return o.Copy ();
+ return rp.Copy ();
}
- if (o.IsUnrestricted ()) {
+ if (rp.IsUnrestricted ()) {
if (flags == ReflectionPermissionFlag.NoFlags)
return null;
else
return Copy ();
}
- ReflectionPermission p = (ReflectionPermission) o.Copy ();
+ ReflectionPermission p = (ReflectionPermission) rp.Copy ();
p.Flags &= flags;
return ((p.Flags == ReflectionPermissionFlag.NoFlags) ? null : p);
}
public override bool IsSubsetOf (IPermission target)
{
- if (target == null)
+ ReflectionPermission rp = Cast (target);
+ if (rp == null)
return (flags == ReflectionPermissionFlag.NoFlags);
- if (! (target is ReflectionPermission))
- throw new ArgumentException ("wrong type");
-
- ReflectionPermission o = (ReflectionPermission) target;
if (IsUnrestricted ())
- return o.IsUnrestricted ();
- else if (o.IsUnrestricted ())
+ return rp.IsUnrestricted ();
+ else if (rp.IsUnrestricted ())
return true;
- return ((flags & o.Flags) == flags);
+ return ((flags & rp.Flags) == flags);
}
public bool IsUnrestricted ()
public override SecurityElement ToXml ()
{
- SecurityElement se = Element (this, 1);
+ SecurityElement se = Element (version);
if (IsUnrestricted ()) {
se.AddAttribute ("Unrestricted", "true");
}
public override IPermission Union (IPermission other)
{
+ ReflectionPermission rp = Cast (other);
if (other == null)
return Copy ();
- if (! (other is ReflectionPermission))
- throw new ArgumentException ("wrong type");
- ReflectionPermission o = (ReflectionPermission) other;
- if (IsUnrestricted () || o.IsUnrestricted ())
+ if (IsUnrestricted () || rp.IsUnrestricted ())
return new ReflectionPermission (PermissionState.Unrestricted);
- ReflectionPermission p = (ReflectionPermission) o.Copy ();
+ ReflectionPermission p = (ReflectionPermission) rp.Copy ();
p.Flags |= flags;
return p;
}
// IBuiltInPermission
int IBuiltInPermission.GetTokenIndex ()
{
- return 4;
+ return (int) BuiltInToken.Reflection;
}
- #endregion // Methods
+ // helpers
+
+ private ReflectionPermission Cast (IPermission target)
+ {
+ if (target == null)
+ return null;
+
+ ReflectionPermission rp = (target as ReflectionPermission);
+ if (rp == null) {
+ ThrowInvalidPermission (target, typeof (ReflectionPermission));
+ }
+
+ return rp;
+ }
}
}
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