/*

##################
#  Virtual Host  #
#     Scanner    #
##################

*/

#include <stdio.h>
#include <string.h>
#include <netdb.h>

#define my_port "80"

int main(int argc, char *argv[]) {

    if (argc != 3) {
	printf("\nusage: ./dns <host> <list>\n\n"); 
	return 1; }

    FILE *dns_file;

    if ((dns_file = fopen(argv[2],"r")) == NULL) {
	printf("\nFile does not exist!\n"); 
	return 1; }

    char guess[50];

    while (fscanf(dns_file, "%s", guess) != EOF) {
	int status;
	char dnsbrute[60];
	sprintf(dnsbrute,"%s.%s",guess, argv[1]);

	struct addrinfo hints, *res;
	memset(&hints, 0, sizeof hints);
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;

	if ((status = getaddrinfo(dnsbrute, my_port, &hints, &res)) == 0) { 
	    printf("\nFOUND! %s", dnsbrute); } }

    fclose(dns_file);
    return 0; }