1/*
2 * trygetif.c - test program for getif.c
3 *
4 * $FreeBSD$
5 */
6
7#include <sys/types.h>
8#include <sys/socket.h>
9
10#if defined(SUNOS) || defined(SVR4)
11#include <sys/sockio.h>
12#endif
13
14#ifdef _AIX32
15#include <sys/time.h>	/* for struct timeval in net/if.h */
16#endif
17#include <net/if.h>				/* for struct ifreq */
18#include <netinet/in.h>
19#include <arpa/inet.h>			/* inet_ntoa */
20
21#include <netdb.h>
22#include <stdio.h>
23#include <ctype.h>
24#include <errno.h>
25
26#include "getif.h"
27
28int debug = 0;
29char *progname;
30
31void
32main(argc, argv)
33	int argc;
34	char **argv;
35{
36	struct hostent *hep;
37	struct sockaddr_in *sip;	/* Interface address */
38	struct ifreq *ifr;
39	struct in_addr dst_addr;
40	struct in_addr *dap;
41	int s;
42
43	progname = argv[0];			/* for report */
44
45	dap = NULL;
46	if (argc > 1) {
47		dap = &dst_addr;
48		if (isdigit(argv[1][0]))
49			dst_addr.s_addr = inet_addr(argv[1]);
50		else {
51			hep = gethostbyname(argv[1]);
52			if (!hep) {
53				printf("gethostbyname(%s)\n", argv[1]);
54				exit(1);
55			}
56			memcpy(&dst_addr, hep->h_addr, sizeof(dst_addr));
57		}
58	}
59	s = socket(AF_INET, SOCK_DGRAM, 0);
60	if (s < 0) {
61		perror("socket open");
62		exit(1);
63	}
64	ifr = getif(s, dap);
65	if (!ifr) {
66		printf("no interface for address\n");
67		exit(1);
68	}
69	printf("Intf-name:%s\n", ifr->ifr_name);
70	sip = (struct sockaddr_in *) &(ifr->ifr_addr);
71	printf("Intf-addr:%s\n", inet_ntoa(sip->sin_addr));
72
73	exit(0);
74}
75