Re: SecurityException: Request Failed on CreateInstanceAndUnwrap
From: Bo George (BoGeorge_at_discussions.microsoft.com)
Date: 07/28/05
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Date: Thu, 28 Jul 2005 12:30:02 -0700
Here is the full stack trace:
==========================
Server stack trace:
at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder
binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr,
Binder binder, Object[] args, CultureInfo culture, Object[]
activationAttributes)
at System.Activator.CreateInstance(String assemblyName, String typeName,
Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args,
CultureInfo culture, Object[] activationAttributes, Evidence securityInfo,
StackCrawlMark& stackMark)
at System.Activator.CreateInstance(String assemblyName, String typeName,
Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args,
CultureInfo culture, Object[] activationAttributes, Evidence securityInfo)
at System.AppDomain.CreateInstance(String assemblyName, String typeName,
Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args,
CultureInfo culture, Object[] activationAttributes, Evidence
securityAttributes)
at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String
typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder,
Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence
securityAttributes)
at
System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(MethodBase
mb, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext,
Object[]& outArgs)
at
System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)
=============================
The Nunit code is actually creating the app domain but I do have the source
so I can change it if necessary. I don't know that any app domain policies
are being applied but I will look into this. Would I look for this using
caspol or through the "Microsoft .NET Framework 1.1 Configuration" tool? The
evidence for the new domain is created from the evidence from the
currentdomain.
Evidence baseEvidence = AppDomain.CurrentDomain.Evidence;
Evidence evidence = new Evidence(baseEvidence);
Let me know if this is not enough information and I can see if I can put
together a small code sample. The one real hitch in this is that the COM+
application that is hosting the .NET assemblies is Groove and I probably
cannot even attempt to represent it in code.
"Nicole Calinoiu" wrote:
> "Bo George" <BoGeorge@discussions.microsoft.com> wrote in message
> news:F2730B27-B9BB-4D08-AFA8-9516A2E07C48@microsoft.com...
> >I am referencing the NUnit libraries in an assembly that is hosted by a
> >COM+
> > application. Within NUnit it creates a "runner" app domain and then calls
> > CreateInstanceAndUnwrap to create an instance of a class within a unit
> > test
> > assembly.
>
> Is it your code that's creating the app domain or some other code? Do you
> know if any app domain policy is being applied or if any additional evidence
> is being provided for the app domain or the target class assembly?
>
>
> > I get a SecurityException on this method when it is executed
> > within the bounds of a COM+ application, even though it is actually in a
> > .NET
> > assembly.
>
> Could you please provide the full exception details (incl. stack trace
> listing) as returned from its ToString method?
>
>
>
> > If I refernce the same NUnit libraries and the same assembly calls them
> > but
> > is hosted in a .NET forms application I do not get any SecurityExceptions
> > on
> > the CreateInstanceAndUnwrap call.
> >
> > I've tried several imperative and declaritve security options at the
> > assembly, class and method levels but so far nothing has worked. Has
> > anyone
> > encountered this or have any suggestions on other things to try?
>
> There are several possible reasons for the difference. App domain policy is
> one. Limited CAS permission grants to other assemblies on the call stack is
> another. Might you be able to provide a minimal sample
> (http://www.yoda.arachsys.com/csharp/complete.html) that demonstrates the
> problem?
>
>
>
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