From: Ruben Fonseca <fonseka@...>
Date: 2008-06-03T00:12:55+09:00
Subject: Safe sandbox for running untrusted code

Hello @all!

I'm sorry if this has been answered before, but I'm looking for an
expert voice for this question.

I would need if Ruby have a safe mechanism of running unsafe code on a
sandbox environment. Image this situation:

I lunch a contest "solve this problem in Ruby". The users submit their
code, and my system runs the code on an sandbox, with memory and time
constraints, and verifies if the output meets the required result.

Basicly, I need a way to run Ruby code that reads from STDIN, writes to
STDOUT, and I need to be sure it doesn't run more than "x" seconds and
don't eat all my memory.

It this possible with the current VM (MRI 1.8)?

Thank you for your support.
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