Security Policy

[Tim Bücker]

Hello.

I have written a little program that uses some unmanaged code -
[DllImport("....dll")].
I´ve send this program to a friend of mine and now he gets a security error.

Two questions about that:

1)
How can I test my application for security errors?
Because I can´t reproduce this error it is very hard to get rid of it...

2)
What do I have to do to get the code running?
I think I remember something like creating a strong name key and enter that
key in the assembly file.
Unfortunately I don´t remember much more...

Any help, links or tips?
Thanks a lot in advance!

Greetings,
Tim.

[Willy Denoyette [MVP]]

"Tim Bücker" <ti*************@web.de> wrote in message
news:c7***********@news.uni-koblenz.de...

Hello.

I have written a little program that uses some unmanaged code -
[DllImport("....dll")].
I´ve send this program to a friend of mine and now he gets a security
error.

Could you post the exact exception message?

Willy.

[Tim Bücker]

"Willy Denoyette [MVP]" <wi*************@pandora.be> schrieb im Newsbeitrag
news:uL*************@TK2MSFTNGP11.phx.gbl...

"Tim Bücker" wrote

I have written a little program that uses some unmanaged code -
[DllImport("....dll")].
I´ve send this program to a friend of mine and now he gets a security
error.

Could you post the exact exception message?

Sorry, no. I´ve no contact with my friend at the moment. That was the reason
for my first questin - how can I test a security based problem?
But I think that it has to do something with this unmanaged code and shared
assemblies...

Thanks for answering!
Greetings, Tim.

[Willy Denoyette [MVP]]

Hard to tell without knowing the exact security error message, one
possibility is that your friend loads this from a network share, but it
could also relate to the unmanaged code that requires security privileges
not held by the user running the code.

Willy.

"Tim Bücker" <ti*************@web.de> wrote in message
news:c7***********@news.uni-koblenz.de...

"Willy Denoyette [MVP]" <wi*************@pandora.be> schrieb im
Newsbeitrag
news:uL*************@TK2MSFTNGP11.phx.gbl...

"Tim Bücker" wrote

>
> I have written a little program that uses some unmanaged code -
> [DllImport("....dll")].
> I´ve send this program to a friend of mine and now he gets a security
> error.

Could you post the exact exception message?

Sorry, no. I´ve no contact with my friend at the moment. That was the
reason
for my first questin - how can I test a security based problem?
But I think that it has to do something with this unmanaged code and
shared
assemblies...

Thanks for answering!
Greetings, Tim.

[Tim Bücker]

"Willy Denoyette [MVP]" <wi*************@pandora.be> schrieb im Newsbeitrag
news:OU**************@TK2MSFTNGP10.phx.gbl...

Hard to tell without knowing the exact security error message, one
possibility is that your friend loads this from a network share

Loading the program from a network share I get a
"System.Security.Permissions.FileIOPermission, mscorlib, ..." exception
opening a OpenFileDialog.
So how is it done to allow the program being executed from a network share?

Thanks a lot!
Tim.

[Willy Denoyette [MVP]]

"Tim Bücker" <ti*************@web.de> wrote in message
news:c7**********@news.uni-koblenz.de...

"Willy Denoyette [MVP]" <wi*************@pandora.be> schrieb im
Newsbeitrag
news:OU**************@TK2MSFTNGP10.phx.gbl...

Hard to tell without knowing the exact security error message, one
possibility is that your friend loads this from a network share

Loading the program from a network share I get a
"System.Security.Permissions.FileIOPermission, mscorlib, ..." exception
opening a OpenFileDialog.
So how is it done to allow the program being executed from a network
share?

Thanks a lot!
Tim.

I see this is a Code Access Permission error, code loaded from a network
share (local intranet zone) has no FileIOPermission.
The Framework provides the .NET Framework Configuration Management Console
(Mscorcfg.msc) or a command line batch utility Caspol.exe to alter the
currently defined security policy.
For example, using Caspol.exe the following command enables FullTrust
permissions to the share (Full access to all resources):

caspol -machine -addgroup 1. -url \\server\share\* Fulltrust

You should take a look at
http://msdn.microsoft.com/library/de...ycaspolexe.asp
for details about Code access security in .NET.

Willy.

[Tim Bücker]

"Willy Denoyette [MVP]" <wi*************@pandora.be> schrieb im Newsbeitrag
news:Oe******************@TK2MSFTNGP09.phx.gbl...

I see this is a Code Access Permission error, code loaded from a network
share (local intranet zone) has no FileIOPermission.
The Framework provides the .NET Framework Configuration Management Console
(Mscorcfg.msc) or a command line batch utility Caspol.exe to alter the
currently defined security policy.
For example, using Caspol.exe the following command enables FullTrust
permissions to the share (Full access to all resources):

caspol -machine -addgroup 1. -url \\server\share\* Fulltrust

You should take a look at

http://msdn.microsoft.com/library/de...ycaspolexe.asp for details about Code access security in .NET.

Thanks! I think that´s it!
And this security policy has to be altered on every computer I want to run
the software, right?

Thanks a lot for your help!
Greetings,
Tim.

[Willy Denoyette [MVP]]

Thanks! I think that´s it!
And this security policy has to be altered on every computer I want to run
the software, right?

That's right, on every computer loading assemblies from the intranet (file
shares).

Willy.