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//
// System.Security.Permissions.PermissionSetAttribute.cs
//
// Authors
// Duncan Mak <duncan@ximian.com>
// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2002 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.
//
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Policy;
using System.Text;
using Mono.Security.Cryptography;
using Mono.Xml;
namespace System.Security.Permissions {
#if NET_2_0
[ComVisible (true)]
#endif
[AttributeUsage (AttributeTargets.Assembly | AttributeTargets.Class |
AttributeTargets.Struct | AttributeTargets.Constructor |
AttributeTargets.Method, AllowMultiple=true, Inherited=false)]
[Serializable]
public sealed class PermissionSetAttribute : CodeAccessSecurityAttribute {
// Fields
private string file;
private string name;
private bool isUnicodeEncoded;
private string xml;
#if NET_2_0
private string hex;
#endif
// Constructor
public PermissionSetAttribute (SecurityAction action)
: base (action)
{
}
// Properties
public string File {
get { return file; }
set { file = value; }
}
#if NET_2_0
public string Hex {
get { return hex; }
set { hex = value; }
}
#endif
public string Name {
get { return name; }
set { name = value; }
}
public bool UnicodeEncoded {
get { return isUnicodeEncoded; }
set { isUnicodeEncoded = value; }
}
public string XML {
get { return xml; }
set { xml = value; }
}
// Methods
public override IPermission CreatePermission ()
{
return null; // Not used, used for inheritance from SecurityAttribute
}
private PermissionSet CreateFromXml (string xml)
{
#if !NET_2_1
SecurityParser sp = new SecurityParser ();
try {
sp.LoadXml (xml);
}
catch (Mono.Xml.SmallXmlParserException xe) {
throw new XmlSyntaxException (xe.Line, xe.ToString ());
}
SecurityElement se = sp.ToXml ();
string className = se.Attribute ("class");
if (className == null)
return null;
PermissionState state = PermissionState.None;
if (CodeAccessPermission.IsUnrestricted (se))
state = PermissionState.Unrestricted;
if (className.EndsWith ("NamedPermissionSet")) {
NamedPermissionSet nps = new NamedPermissionSet (se.Attribute ("Name"), state);
nps.FromXml (se);
return (PermissionSet) nps;
}
else if (className.EndsWith ("PermissionSet")) {
PermissionSet ps = new PermissionSet (state);
ps.FromXml (se);
return ps;
}
#endif
return null;
}
public PermissionSet CreatePermissionSet ()
{
PermissionSet pset = null;
if (this.Unrestricted)
pset = new PermissionSet (PermissionState.Unrestricted);
else {
pset = new PermissionSet (PermissionState.None);
if (name != null) {
return PolicyLevel.CreateAppDomainLevel ().GetNamedPermissionSet (name);
}
else if (file != null) {
Encoding e = ((isUnicodeEncoded) ? System.Text.Encoding.Unicode : System.Text.Encoding.ASCII);
using (StreamReader sr = new StreamReader (file, e)) {
pset = CreateFromXml (sr.ReadToEnd ());
}
}
else if (xml != null) {
pset = CreateFromXml (xml);
}
#if NET_2_0
else if (hex != null) {
// Unicode isn't supported
//Encoding e = ((isUnicodeEncoded) ? System.Text.Encoding.Unicode : System.Text.Encoding.ASCII);
Encoding e = System.Text.Encoding.ASCII;
byte[] bin = CryptoConvert.FromHex (hex);
pset = CreateFromXml (e.GetString (bin, 0, bin.Length));
}
#endif
}
return pset;
}
}
}
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