mirror of
https://github.com/rofl0r/proxychains-ng.git
synced 2024-11-01 01:28:55 +00:00
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <netdb.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/socket.h>
|
|
|
|
#ifndef NI_MAXHOST
|
|
#define NI_MAXHOST 1025
|
|
#endif
|
|
|
|
static int doit(const char* host, const char* service) {
|
|
struct addrinfo *result;
|
|
struct addrinfo *res;
|
|
int error;
|
|
|
|
/* resolve the domain name into a list of addresses */
|
|
error = getaddrinfo(host, service, NULL, &result);
|
|
if (error != 0)
|
|
{
|
|
fprintf(stderr, "error in getaddrinfo: %s\n", gai_strerror(error));
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* loop over all returned results and do inverse lookup */
|
|
for (res = result; res != NULL; res = res->ai_next)
|
|
{
|
|
char hostname[NI_MAXHOST] = "";
|
|
|
|
error = getnameinfo(res->ai_addr, res->ai_addrlen, hostname, NI_MAXHOST, NULL, 0, 0);
|
|
if (error != 0)
|
|
{
|
|
fprintf(stderr, "error in getnameinfo: %s\n", gai_strerror(error));
|
|
continue;
|
|
}
|
|
if (*hostname != '\0')
|
|
printf("hostname: %s\n", hostname);
|
|
}
|
|
|
|
freeaddrinfo(result);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
int main(void) {
|
|
int ret;
|
|
ret = doit("www.example.com", NULL);
|
|
ret = doit("www.example.com", "80");
|
|
return ret;
|
|
}
|