Mac Changer In CPP

macchanger.cpp

#include <iostream>
#include <cstring>
#include <unistd.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <linux/if_ether.h>

using namespace std;

int main(int argc, char* argv[]) {
    int sock;
    struct ifreq ifr;
    char* iface = argv[1];
    char* new_mac = argv[2];

    sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock == -1) {
        cout << "Could not create socket." << endl;
        return -1;
    }

    strncpy(ifr.ifr_name, iface, IFNAMSIZ-1);

    int res = ioctl(sock, SIOCGIFHWADDR, &ifr);
    if (res == -1) {
        cout << "Could not retrieve MAC address." << endl;
        return -1;
    }

    int success = 0;
    success = ioctl(sock, SIOCSIFHWADDR, &ifr);
    if (success == -1) {
        cout << "Could not change MAC address." << endl;
        return -1;
    } else {
        cout << "MAC address changed successfully." << endl;
    }

    close(sock);
    return 0;
}