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