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Article #12726Re: Direcci�n IP en C
From: Gonzalo Paniagua Javier
Date: Mon, 04 Jun 2001 07:26
Date: Mon, 04 Jun 2001 07:26
35 lines
1828 bytes
1828 bytes
MMM <mamuma@eresmas.com> escribi�:
> Como puedo obtener la direcci�n Ip utilizando C/C++, hay alguna librer�a en
> linux??????
Prueba con esto:
-----------------getaddr.c
#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <linux/if.h>
#include <sys/ioctl.h>
int main(){
struct ifreq interface;
struct sockaddr_in *saddr;
int fd;
strcpy(interface.ifr_ifrn.ifrn_name, "eth0");
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0){
perror("getaddr (socket)");
return EXIT_FAILURE;
}
if (ioctl(fd, SIOCGIFADDR, &interface) != 0){
perror("getaddr (ioctl)");
return EXIT_FAILURE;
}
saddr = (struct sockaddr_in *) &interface.ifr_ifru.ifru_addr;
printf("La IP es: %s\n", inet_ntoa(saddr->sin_addr.s_addr));
return EXIT_SUCCESS;
}
------------------------
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From: Gonzalo Paniagua Javier <gpanjav@jazzfree.com>
Subject: Re: Direcci�n IP en C
Newsgroups: es.comp.os.linux.programacion
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