Created
August 18, 2016 15:03
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#include <arpa/inet.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <sys/socket.h> | |
#include <linux/if_packet.h> | |
#include <net/ethernet.h> /* the L2 protocols */ | |
#include <unistd.h> | |
#include<sys/ioctl.h> | |
#include<net/if.h> | |
#include<string.h> | |
unsigned char macorigen[6]; | |
unsigned char mask[4]; | |
unsigned char ip[4]; | |
int obtendatos(int ds){ | |
struct ifreq nic; | |
struct sockaddr no; | |
char nombre[10]; | |
int indice,a; | |
printf("dame el nombre\n"); | |
gets(nombre); | |
strcpy(nic.ifr_name,nombre); | |
if (ioctl(ds,SIOCGIFINDEX,&nic)==-1) | |
{ | |
perror("errror \n"); | |
} | |
else{ | |
indice=nic.ifr_ifindex; | |
//macorigen=nic.(ifr_hwaddr.sa_data); | |
printf("el indice es: %d\n",indice); | |
} | |
if(ioctl(ds,SIOCGIFHWADDR,&nic)==-1) | |
{ | |
perror("error \n"); | |
} | |
else{ | |
memcpy(macorigen,nic.ifr_hwaddr.sa_data,6); | |
for(a=0;a<6;a++){ | |
printf("%.2x:",macorigen[a]); | |
} | |
} | |
////////mask | |
if(ioctl(ds,SIOCGIFNETMASK,&nic)==-1) | |
{ | |
perror("error \n"); | |
} | |
else{ | |
memcpy(macorigen,nic.ifr_netmask.sa_data+2,4); | |
printf("\n"); | |
for(a=0;a<4;a++){ | |
printf("%d:",macorigen[a]); | |
} | |
} | |
/////// ip | |
if(ioctl(ds,SIOCGIFADDR,&nic)==-1) | |
{ | |
perror("error \n"); | |
} | |
else{ | |
memcpy(ip,nic.ifr_addr.sa_data+2,4); | |
printf("\n"); | |
for(a=0;a<4;a++){ | |
printf("%d:",ip[a]); | |
} | |
} | |
return indice; | |
} | |
int main(){ | |
int packet_socket,index; | |
packet_socket = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL) ); | |
if(packet_socket < 0){ | |
perror("Error al abrir el socket\n"); | |
} else { | |
index=obtendatos(packet_socket); | |
printf("Exito al abrir el socket\n"); | |
} | |
close(packet_socket); | |
return 0; | |
} |
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