/* decip.c
 * Despite the name, it converts to more than decimal.
 * UziMonkey  (uzimonkey@gmail.com)
 */
#include <stdio.h>
#include <string.h>
#include <netdb.h>
#include <arpa/inet.h>

int main (int argc, char *argv[]) {
	struct hostent *he;
	unsigned char *ucip;
	unsigned long *ulip;

	if (argv[1][0] != '-')  he = gethostbyname (argv[1]);
	else  he = gethostbyname (argv[2]);
	if (he == NULL)  printf ("Could not resolve hostname.\n");
	ucip = (unsigned char *)((struct in_addr *)he->h_addr);
	ulip = (unsigned long *)((struct in_addr *)he->h_addr);
	
	printf ("%d.%d.%d.%d is ", ucip[0], ucip[1], ucip[2], ucip[3]);
	if (argv[1][0] != '-' || !strcmp (argv[1], "--dotted-decimal")) {
		printf ("%u.%u.%u.%u\n", ucip[0], ucip[1], ucip[2], ucip[3]);
	} else if (!strcmp (argv[1], "--decimal")) {
		printf ("%u\n", ntohl(*ulip));
	} else if (!strcmp (argv[1], "--dotted-octal")) {
		printf ("0%03o.0%03o.0%03o.0%03o\n", ucip[0], ucip[1], ucip[2], ucip[3]);
	} else if (!strcmp (argv[1], "--octal")) {
		printf ("0%o\n", ntohl(*ulip));
	} else if (!strcmp (argv[1], "--dotted-hex")) {
		printf ("%x.%x.%x.%x\n", ucip[0], ucip[1], ucip[2], ucip[3]);
	} else if (!strcmp (argv[1], "--hex")) {
		printf ("%x\n", ntohl(*ulip));
	}

	return 0;
}