Re: Permissions on dynamically loaded assembly?

Hi,

have a look at this article:
http://msdn.microsoft.com/msdnmag/issues/05/11/HostingAddIns/default.aspx

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Dominick Baier - DevelopMentor
http://www.leastprivilege.com

I've created an app with a plugin structure which works if I trust the
plugin-author. Next I want to allow untrusted plugins to run under
strict access conditions.

I'm already loading the plugins into a secondary AppDomain, and I can
set code access security on this secondary appdomain to the
"Execution" Permissionset. Unfortunately, if I do this, I can no
longer load anything into this appdomain because I get a
System.Security.Permissions.FileIOPermission exception at the
Assembly.LoadFrom(...) regardless of what my plugin assembly contains.
I understand why it is happening, but is there no way around it? Is
there some way to dynamically load an assembly and execute (untrusted)
code under tight (Execution-Only) permissions?

Jesper



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