| Re: Add compiler to Page [message #186002 is a reply to message #186001] |
Wed, 28 May 2014 13:58  |
Jerry Stuckle
Messages: 2598
Registered: September 2010
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Senior Member |
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On 5/28/2014 9:28 AM, Robert Heller wrote:
> At Wed, 28 May 2014 08:32:36 -0400 Jerry Stuckle <jstucklex(at)attglobal(dot)net> wrote:
>
>>
>> On 5/28/2014 8:10 AM, Denis McMahon wrote:
>>> On Wed, 28 May 2014 07:38:32 -0400, bill wrote:
>>>
>>>> On 5/28/2014 7:06 AM, jalaf28(at)gmail(dot)com wrote:
>>>
>>>> > Hello All I want to add gcc comnpiler online to page how can i do it .
>>>> > i dont know please help me.
>>>
>>>> Perhaps others can discern your intent, but I can't.
>>>> Please explain what you are trying to do with an overview and then more
>>>> detail of what you have tried.
>>>
>>> My first guess was that OP wishes to upload a c or c++ source file to a
>>> web server and then receive an executable back .... but that seems such a
>>> daft thing to try and do that I assumed I must be wrong.
>>>
>>> Reasons it's daft:
>>>
>>> Libraries - how do you know the compiler is linking the right ones.
>>> Bits - or the right number of bits.
>>> OS - or even for the right OS.
>>>
>>> And - do I really want someone elses arbitrary code sitting in a compiled
>>> executable on my server? Why yes, of course I do, I can't
>>> see any way in which that could possibly go wrong or introduce any
>>> security vulnerabilities at all.[/mode]
>>>
>>
>> Denis,
>>
>> That was my thought, but you beat me to it :)
>>
>> I thought about doing this a number of years ago for online training,
>> but decided against it. It *could* be possible to safely compile an
>> executable on the server using a chroot jail. However, that setup would
>> be very prone to errors, opening the system up wide to hacking. I
>> wouldn't trust many Linux admins (including myself) to do it properly.
>>
>> I just installed an SSH server and gave each student their own id (and
>> home directory). It was much cleaner.
>>
>> However, if the OP insists on exposing his system (he won't get this to
>> work on a shared host for the reasons you mentioned), passthru() would
>> be able to call the compiler.
>>
>> But please let us know the URL so we can stay away from that site.
>
> Way back in the dim dark past, there used to be something called 'crobots'.
> This was a *simple* self-contained C compiler system, with a very limited
> library that compiled to a VM byte-code (ala Java). The only sorts of programs
> that were possible were programs to automate a 'virtual' robot tank that could
> sense and shoot at another 'virtual' robot tank. Typically you would 'load'
> two of these 'programs' and the two robot tanks would shoot at each other until
> one was destroyed. I had this installed on my FidoNet BBS and BBS users could
> upload little C programs that could be loaded into this program. The library
> that the crobots supplied was very similar to the sorts of libraries supplied
> with the Ardunio IDE -- I guess building Ardunio-based tank robots equiped
> with sensors and (Nerf warhead!) cannons would be one way to resurect crobots
> with 'modern' hardware...
>
>>
>
Robert,
Ah yes, I remember crobots. It was a fun game. Unfortunately, I never
was very good at it :)
But why take all the fun out of it (Nerf warhead)? Why not make it
interesting. A nuclear warhead would be very enjoyable. It doesn't
have to be that big - 10K ton would do just fine :)
--
==================
Remove the "x" from my email address
Jerry Stuckle
jstucklex(at)attglobal(dot)net
==================
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