🚀 go-pugleaf

MSF presumiblemente dijo el dia Dom 19 Ene 2003 21:54:

> Hi
> 
> I've just started programing, using C language and UDP Sockets (in Linux);
> (so I have a few problems)
> 
> 
> I have two programs (client and server);
>     -Client send (interactive) request information about server network
> configuration (/sbin/ifconfig)
> 
>         -Server
>                 if(!strcasecmp(dgram,"interface")){
>           should do this request
>                 system("/sbin/ifconfig")
>            and send it to client
>                 ??????? HOW ??????
> 
> Simple use
>             variable1 = system("/sbin/ifconfig")
>             sprintf("%s",variable1)
>  doesn't work (problem with buffer, even I set it bigger),

do you initialize the buffer?? remember you need one character more for 
"\0" (End Of Stream)
>     but how send it to Client?
check that:
http://www.cs.cf.ac.uk/Dave/C/node28.html#SECTION002800000000000000000

> (maybe first write to file, and then to buffer - gradually, after this
> send it to Client
>  - if it's good idea - how write it?
well, you must do it on the fly, for security, and one more... don't use 
the function system ( it's too easy to exploit ).
> 
> Big thanks for any answer
dnd.

> 
> with regards
> Martin
PD: it's a spanish newsgroup.

Spanish version ;) :
tienes el buffer inicializado??, recuerda que tienes q dejar un caracter 
mas para el caracter nulo de la linea.

mira esto:
http://www.cs.cf.ac.uk/Dave/C/node28.html#SECTION002800000000000000000

bueno, deberias hacerlo directamente, asi tendras menos problemas de 
seguridad, ademas mejor que no utilizes la funcion "system", ya q esta se 
puede exploitear demasiado facilmente.

Traducido por: yo mismos :P.

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