From: Andre' <andre_NOSPAM@...>
Date: 2004-08-12T00:21:12+09:00
Subject: Re: Thread takeover

Thank you for the hints.

>> But if I add the line "m = Main.new" at the end of 'p.rb', the thread
>> seems to take over! (22222222222222222222222222222222222)
>
> That's probably a scoping issue; it might be that Main#initialize in p.rb
> overwrites Main#initialize in your script file.

I don't think so. If I change the name of the class in one of the classes,  
I still get the same problem.

>> Since this 'p.rb' is some external file the users will input, I can't
> tell
>> what it'll be on it, so I can't avoid that a malicious code takes over
> my
>> program! Or can I?
>
> You can't if you simply require arbitrary code.  The interpreter will
> happily execute whatever he finds in p.rb.  You can limit damage by
> setting $SAFE in the thread loading the code plus taking some more
> measures but I'm not sure whether you can really stop threads from  
> running
> berserk.  (I believe not.)

I tried. Setting $SAFE higher will only disallow loading a file (which I  
can't) and it won't solve my problem.

Andr�

-- 
(c) Andre' - All rights reseved - 2004