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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.ComponentModel;
using System.Threading;
using Castle.DynamicProxy;
namespace AspectableMef.Castle
{
public class SecurityInterceptor : IInterceptor
{
#region IInterceptor memers
public void Intercept(IInvocation invocation)
{
bool shouldCallOriginalMethod = false;
//check for the special attribute
if (!invocation.Method.HasAttribute<SecurityAttribute>())
shouldCallOriginalMethod = true;
if (Thread.CurrentPrincipal == null)
shouldCallOriginalMethod = true;
SecureWindowsPrincipal principal = null;
try
{
principal = (SecureWindowsPrincipal)Thread.CurrentPrincipal;
}
catch
{
shouldCallOriginalMethod = true;
}
if (principal != null)
{
foreach (SecurityAttribute securityAttrib in invocation.Method.GetAttributes<SecurityAttribute>())
{
if (!principal.IsInRole(securityAttrib.Role) && !principal.HasPrivilege(securityAttrib.Privilege))
{
String error = String.Format("The user with Logon : {0}, does not have the Role : {1}, or Privilege {2}",
Thread.CurrentPrincipal.Identity.Name, securityAttrib.Role, securityAttrib.Privilege);
throw new SecureWindowsPrincipalException(error);
}
}
shouldCallOriginalMethod = true;
}
else
{
shouldCallOriginalMethod = true;
}
if (shouldCallOriginalMethod)
invocation.Proceed();
}
#endregion
}
}
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I currently hold the following qualifications (amongst others, I also studied Music Technology and Electronics, for my sins)
- MSc (Passed with distinctions), in Information Technology for E-Commerce
- BSc Hons (1st class) in Computer Science & Artificial Intelligence
Both of these at Sussex University UK.
Award(s)
I am lucky enough to have won a few awards for Zany Crazy code articles over the years
- Microsoft C# MVP 2016
- Codeproject MVP 2016
- Microsoft C# MVP 2015
- Codeproject MVP 2015
- Microsoft C# MVP 2014
- Codeproject MVP 2014
- Microsoft C# MVP 2013
- Codeproject MVP 2013
- Microsoft C# MVP 2012
- Codeproject MVP 2012
- Microsoft C# MVP 2011
- Codeproject MVP 2011
- Microsoft C# MVP 2010
- Codeproject MVP 2010
- Microsoft C# MVP 2009
- Codeproject MVP 2009
- Microsoft C# MVP 2008
- Codeproject MVP 2008
- And numerous codeproject awards which you can see over at my blog