limited python virtual machine (WAS: Another scripting language implemented into Python itself?)

[aurora]

It is really necessary to build a VM from the ground up that includes OS  
ability? What about JavaScript?


> On Wed, Jan 26, 2005 at 05:18:59PM +0100, Alexander Schremmer wrote:
>> On Tue, 25 Jan 2005 22:08:01 +0100, I wrote:
>>
>> >>>> sys.safecall(func, maxcycles=1000)
>> > could enter the safe mode and call the func.
>>
>> This might be even enhanced like this:
>>
>> >>> import sys
>> >>> sys.safecall(func, maxcycles=1000,
>>                  allowed_domains=['file-IO', 'net-IO', 'devices',  
>> 'gui'],
>>                  allowed_modules=['_sre'])
>>
>> Any comments about this from someone who already hacked CPython?
>
> Yes, this comes up every couple months and there is only one answer:
> This is the job of the OS.
> Java largely succeeds at doing sandboxy things because it was written  
> that
> way from the ground up (to behave both like a program interpreter and an  
> OS).
> Python the language was not, and the CPython interpreter definitely was  
> not.
>
> Search groups.google.com for previous discussions of this on c.l.py
>
> -Jack