Jorge,

That's an interesting approach, however it does not support windows, am I 
correct? How about it's stability, I can see that it's in 0.1.4, are you 
confident running it in production?

Thanks,

Gustavo Machado
machad...@gmail.com



On Jan 20, 2013, at 8:32 AM, Jorge Chamorro <jo...@jorgechamorro.com> wrote:

> On 16/01/2013, at 22:24, Gustavo Machado wrote:
> 
>> Hello,
>> 
>> We are building a platform that is oriented to developers in node.js, and we 
>> are in the process of evaluating giving our users the ability to configure 
>> validation and authorisation rules in Javascript.
>> 
>> On virtually every request, these validation rules are going to be executed, 
>> so it needs to be somewhat performant, but most importantly "safe". And by 
>> safe I mean:
>> 
>> - no require-ing
>> - no access to global
>> - any kind of attack that may give access to the local system (files, 
>> network, etc)
>> 
>> So far, we found the "sandbox" module: 
>> https://github.com/gf3/sandbox/blob/master/example/example.js but are 
>> looking for some other choices.
>> 
>> Thanks,
>> Gustavo Machado
> 
> V8 Isolates run isolated code, share nothing with node's JS context and don't 
> have any means for IO.
> 
> With Threads A GoGo (<https://github.com/xk/node-threads-a-gogo/>) you can 
> create a JS thread that runs in a V8 isolate, pass it a function (serialized, 
> as text), execute it with some parameters (serialized, as text), and get back 
> a result (serialized, as text).
> 
> The only means for IO a thread in TAGG has are:
> 
> 1.- The built-in `puts(text)` cmd that writes to stdout, but it can be 
> deleted.
> 2.- The thread.emit() method, but it can be deleted as well.
> 
> So basically the clients' code you could run with 100% safety in a TAGG 
> thread could be +/- a function like this:
> 
> function clientProcedure (data) {
>  //process data
>  return result;
> }
> 
> And you'd do it so:
> 
> var aThread= require('threads-a-gogo').create()
>  .eval('delete puts')
>  .eval('delete thread.emit')
>  .eval('(' + clientProcedure + ')(' + data + ')', cb);
> 
> function cb (result) {
>  //here you'd receive the result of clientProcedure(data);
>  aThread.destroy();
> }
> 
> 
> -- 
> Jorge.
> 
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