I made a really basic prototype for you in c++ to get you onto the right path.
But keep in mind that its not safe at all and it can horribly fail at any second, you'll have to make some more checks to make sure the hostname doesn't overflow etc. And you'll also have to figure out how you want to fill the char address[][32]
array because this is just handing in four example IPs.
main.h:
#pragma GCC system_header
#include <Winsock2.h>
#include <iphlpapi.h>
#include <cstdio>
//#pragma comment(lib, "iphlpapi.lib")
//#pragma comment(lib, "ws2_32.lib")
main.cpp:
#include "main.h"
bool get_name(unsigned char* name, char dest[32])
{
struct in_addr destip;
struct hostent* info;
destip.s_addr = inet_addr(dest);
info = gethostbyaddr((char*)&destip, 4, AF_INET);
if (info != NULL)
{
strcpy((char*)name, info->h_name);
}
else
{
return false;
}
return true;
}
bool get_mac(unsigned char* mac , char dest[32])
{
struct in_addr destip;
ULONG mac_address[2];
ULONG mac_address_len = 6;
destip.s_addr = inet_addr(dest);
SendARP((IPAddr)destip.S_un.S_addr, 0, mac_address, &mac_address_len);
if (mac_address_len)
{
BYTE* mac_address_buffer = (BYTE*)&mac_address;
for (int i = 0; i < (int)mac_address_len; i++)
{
mac[i] = (char)mac_address_buffer[i];
}
}
else
{
return false;
}
return true;
}
int main()
{
char address[][32] = {{"192.168.1.1"}, {"192.168.1.2"}, {"192.168.1.3"}, {"192.168.1.4"}};
WSADATA sock;
if (WSAStartup(MAKEWORD(2,2), &sock) != 0)
{
printf("Failed to initialise winsock. (%d)\n", WSAGetLastError());
return 1;
}
for (int i = 0; i < (int)sizeof(address)/32; i++)
{
unsigned char mac[6] = {'\0'};
unsigned char name[100] = {'\0'};
if (get_mac(mac, address[i]))
{
printf("%s : %s : %.2X-%.2X-%.2X-%.2X-%.2X-%.2X\n", address[i], (get_name(name, address[i])) ? (char*)name : "-", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
fflush(stdout);
}
}
printf("\nDone.\n");
fflush(stdout);
return 0;
}
Output:
192.168.1.1 : pfsense.router : 00-40-F4-CC-A4-83
192.168.1.2 : - : 00-1D-7E-4B-69-BF
Done.
You'll want to link iphlpapi.lib
and ws2_32.lib
, I'm using GCC so pragma comment(lib, "")
wont work, but if you're using msvc you can uncomment the lines in the header.