1/* vi: set sw=4 ts=4: */
2/*
3 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
4 */
5#include <getopt.h>
6
7#include "common.h"
8#include "dhcpd.h"
9
10int dumpleases_main(int argc, char **argv);
11int dumpleases_main(int argc, char **argv)
12{
13	int fd;
14	int i;
15	unsigned opt;
16	time_t expires;
17	const char *file = LEASES_FILE;
18	struct dhcpOfferedAddr lease;
19	struct in_addr addr;
20
21	enum {
22		OPT_a	= 0x1,	// -a
23		OPT_r	= 0x2,	// -r
24		OPT_f	= 0x4,	// -f
25	};
26#if ENABLE_GETOPT_LONG
27	static const char dumpleases_longopts[] ALIGN1 =
28		"absolute\0"  No_argument       "a"
29		"remaining\0" No_argument       "r"
30		"file\0"      Required_argument "f"
31		;
32
33	applet_long_options = dumpleases_longopts;
34#endif
35	opt_complementary = "=0:a--r:r--a";
36	opt = getopt32(argv, "arf:", &file);
37
38	fd = xopen(file, O_RDONLY);
39
40	printf("Mac Address       IP-Address      Expires %s\n", (opt & OPT_a) ? "at" : "in");
41	/*     "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */
42	while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
43		printf(":%02x"+1, lease.chaddr[0]);
44		for (i = 1; i < 6; i++) {
45			printf(":%02x", lease.chaddr[i]);
46		}
47		addr.s_addr = lease.yiaddr;
48		printf(" %-15s ", inet_ntoa(addr));
49		expires = ntohl(lease.expires);
50		if (!(opt & OPT_a)) { /* no -a */
51			if (!expires)
52				puts("expired");
53			else {
54				unsigned d, h, m;
55				d = expires / (24*60*60); expires %= (24*60*60);
56				h = expires / (60*60); expires %= (60*60);
57				m = expires / 60; expires %= 60;
58				if (d) printf("%u days ", d);
59				printf("%02u:%02u:%02u\n", h, m, (unsigned)expires);
60			}
61		} else /* -a */
62			fputs(ctime(&expires), stdout);
63	}
64	/* close(fd); */
65
66	return 0;
67}
68