StackOverflow2013

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6707939
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2011-07-15T13:46:18.067
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<blockquote> I'd like to execute an untrusted js code using runInNewContext in node.js but as far as I see there is no way to limit its execution time. Also it is a sync operation. is there a way to set timeout on it or async version of it that will allow me to control its execution from 'outside'? </blockquote> I think What you are saying is completely true. I think the only option is to fill an issue with <a href="https://github.com/joyent/node/issues" rel="nofollow">Joyent/Ryan Dahl</a>. Hopefully he/they can come up with something smart or maybe will tell you it is not possible. From <a href="http://nodejs.org/docs/v0.4.9/api/all.html#vm.runInNewContext" rel="nofollow">vm.runInNewContext</a>: <blockquote> Note that running untrusted code is a tricky business requiring great care. To prevent accidental global variable leakage, vm.runInNewContext is quite useful, but safely running untrusted code requires a separate process. </blockquote> So to do this safely you need to run in external program. I think the "expensive part" can be avoided by <a href="http://httpd.apache.org/docs/2.0/mod/prefork.html#how-it-works" rel="nofollow">preforking</a>. <blockquote> A single control process is responsible for launching child processes which listen for connections and serve them when they arrive. Apache always tries to maintain several spare or idle server processes, which stand ready to serve incoming requests. In this way, clients do not need to wait for a new child processes to be forked before their requests can be served. </blockquote>
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1. POnodejs: Is it possible to eval js code using runInNewContext and limit its execution time by a timeout?
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1. USAlfred
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1. POnodejs: Is it possible to eval js code using runInNewContext and limit its execution time by a timeout?
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