#include <stdio.h>

#include <unistd.h>

#include <netdb.h>

#include <arpa/inet.h>

#include <stdlib.h>

#include <sys/ioctl.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <net/if.h>

#define MAXINTERFACES 16

void get_ip()

{

    int sock_fd;

    struct ifreq buf[MAXINTERFACES];

    struct ifconf ifc;

    int interface_num;

    char *addr;//[ADDR_LEN];

    if((sock_fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

    {

        printf("Create socket failed");

        return;

    }

    ifc.ifc_len = sizeof(buf);

    ifc.ifc_req = buf;

    if(ioctl(sock_fd, SIOCGIFCONF, (char *)&ifc) < 0)

    {

        printf("Get a list of interface addresses failed");

        return;

    }

    

    interface_num = ifc.ifc_len / sizeof(struct ifreq);

    printf("The number of interfaces is %d\n", interface_num);

    while(interface_num--) 

    {

        printf("Net device: %s\n", buf[interface_num].ifr_name);

        if(ioctl(sock_fd, SIOCGIFFLAGS, (char *)&buf[interface_num]) < 0)

        {

            printf("Get the active flag word of the device");

            continue;

        }

        if(buf[interface_num].ifr_flags & IFF_PROMISC)

            printf("Interface is in promiscuous mode\n");

        if(buf[interface_num].ifr_flags & IFF_UP)

            printf("Interface is running\n");

        else

            printf("Interface is not running\n");

        if(ioctl(sock_fd, SIOCGIFADDR, (char *)&buf[interface_num]) < 0)

        {

            printf("Get interface address failed");

            continue;

        }

        addr = inet_ntoa(((struct sockaddr_in*)(&buf[interface_num].ifr_addr))->sin_addr);

        printf("IP address is %s\n", addr);  

    }

close(sock_fd);

    return;

}

void get_mac()

{

    int sock_fd;

    struct ifreq buf[MAXINTERFACES];

    struct ifconf ifc;

    int interface_num;

    

    if((sock_fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

    {

        printf("Create socket failed");

        return;

    }

    ifc.ifc_len = sizeof(buf);

    ifc.ifc_req = buf;

    if(ioctl(sock_fd, SIOCGIFCONF, (char *)&ifc) < 0)

    {

        printf("Get a list of interface addresses failed");

        return;

    }

    interface_num = ifc.ifc_len / sizeof(struct ifreq);

    printf("The number of interfaces is %d\n", interface_num);

    while(interface_num--) 

    {

        printf("Net device: %s\n", buf[interface_num].ifr_name);

        if(ioctl(sock_fd, SIOCGIFFLAGS, (char *)&buf[interface_num]) < 0)

        {

            printf("Get the active flag word of the device");

            continue;

        }

        if(buf[interface_num].ifr_flags & IFF_PROMISC)

            printf("Interface is in promiscuous mode\n");

        if(buf[interface_num].ifr_flags & IFF_UP)

            printf("Interface is running\n");

        else

            printf("Interface is not running\n");

        if(ioctl(sock_fd, SIOCGIFHWADDR, (char *)&buf[interface_num]) < 0)

        {

            printf("Get the hardware address of a device failed");

            continue;

        }

        printf("Mac address is: %02X:%02X:%02X:%02X:%02X:%02X\n",

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[0],

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[1],

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[2],

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[3],

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[4],

            (unsigned char)buf[interface_num].ifr_hwaddr.sa_data[5]);

    }

   close(sock_fd);

}