How do I start a thread in a different security context?

by

I believe that you can just set the CurrentPrincipal as first operation of the thread code after the thread has started, and only then begin to execute the code which is supposed to run with the other principal.

This should take care of any .NET role-based checks. If you need impersonation as well for calls to the OS, you can impersonate the WindowsIdentity.

Code (may or may not work – didn’t test it):

public void Run(object principalObj) {
    if (principalObj == null) {
        throw new ArgumentNullException("principalObj");
    }
    IPrincipal principal = (IPrincipal)principalObj;
    Thread.CurrentPrincipal = principal;
    WindowsIdentity identity = principal.Identity as WindowsIdentity;
    WindowsImpersonationContext impersonationContext = null;
    if (identity != null) {
        impersonationContext = identity.Impersonate();
    }
    try {
        // your code here
    } finally {
        if (impersonationContext != null) {
            impersonationContext.Undo();
        }
    }
}

...

Thread thread = new Thread(Run);
thread.Start(yourPrincipal);

More Related Contents:

  1. A potentially dangerous Request.Path value was detected from the client (*)
  2. Memory barrier generators
  3. How to get DropDownList SelectedValue in Controller in MVC
  4. Solution for overloaded operator constraint in .NET generics
  5. Algorithm to compare two images in C#
  6. Invalid length for a Base-64 char array
  7. Capture multiple key downs in C#
  8. Overriding SaveChanges and setting ModifiedDate, but how do I set ModifiedBy?
  9. Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) member…”?
  10. How to clear browser cache on browser back button click in MVC4?
  11. Accessing a property of derived class from the base class in C#
  12. Use the dynamic keyword/.NET 4.6 feature in Unity
  13. Creating threads – Task.Factory.StartNew vs new Thread()
  14. How to generate random color names in C#
  15. How to start ChromeDriver in headless mode
  16. Asking for legitimate example of calling stored procedure C#: MYSQL
  17. What are the advantages of delegates? [duplicate]
  18. Why doesn’t VS 2008 display extension methods in Intellisense for String class
  19. Visual Studio 2015 RTM – Debugging not working
  20. What’s wrong with calling Invoke, regardless of InvokeRequired?
  21. System.Windows.Automation is extremely slow
  22. How to programmatically remove a file from “share with me” in Google drive
  23. Chrome driver for Selenium stuck in grey screen on bet365 site
  24. ReSharper – Possible Null Assignment when using Microsoft.Contracts
  25. Sorting the result of Directory.GetFiles in C#
  26. How to zoom an image in&out in C#?
  27. Entity Framework: Setting a Foreign Key Property
  28. Reactive Extensions for .NET (Rx): Take action once all events are completed
  29. Newtonsoft JSON for .net is ignoring jsonproperty tags
  30. Constructor injection with Quartz.NET and Simple Injector

Leave a Comment