From: us on 27 Feb 2010 10:58 "Jan Sieber" <jan.sieber(a)port.ac.uk> wrote in message <hm6ujc$34k$1(a)fred.mathworks.com>... > This is a teaching related question: > > I want to test automatically Matlab functions written by students using a Matlab script. I can easily catch errors with try/catch but how can I prevent from exexcution malicious code such as system calls or access to caller workspace inside the tested function? I have not found anything in the help about this topic. > > At the moment, my resort is to run these tests calling Matlab as a different user but this is impractical because then I cannot run Matlab under my original name anymore (licensing restriction). > > Any help would be appreciated, > Jan why would any of your students create -malicious- code(?)... also, since you -probably- have to rate their submission(s), do you not have to at least glance at the code(?)... us
From: Jan Simon on 27 Feb 2010 11:17 Dear Us! > why would any of your students create -malicious- code(?)... Criminal intent is not logical. There is no reason to create any computer viruses. The mentioned cup of coffee method would be more efficient than: "Give me an A and I'll give you the password to decrypt your private data..." What about this: Force the students to demonstrate their code on their private laptops! Jan
From: us on 27 Feb 2010 11:39 "Jan Simon" > What about this: Force the students to demonstrate their code on their private laptops! well, if(f) one assumes a REALLY MALICIOUS person, he/she could easily fork a function's behavior according to some unique id from the computer/ip/... but again, it should be easy for an experienced ML user to find such spots by looking at the code... us
From: Matt Dunham on 1 Mar 2010 13:28 "Jan Sieber" <jan.sieber(a)port.ac.uk> wrote in message <hm6ujc$34k$1(a)fred.mathworks.com>... > This is a teaching related question: > > I want to test automatically Matlab functions written by students using a Matlab script. I can easily catch errors with try/catch but how can I prevent from exexcution malicious code such as system calls or access to caller workspace inside the tested function? I have not found anything in the help about this topic. > > At the moment, my resort is to run these tests calling Matlab as a different user but this is impractical because then I cannot run Matlab under my original name anymore (licensing restriction). > > Any help would be appreciated, > Jan What about installing vmware on your system, and Matlab within a virtual session?
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