1 /* vi: set sw=4 ts=4: */
3 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
9 int dumpleases_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
10 int dumpleases_main(int argc UNUSED_PARAM, char **argv)
15 int64_t written_at, curr, expires_abs;
16 const char *file = LEASES_FILE;
17 struct dyn_lease lease;
26 static const char dumpleases_longopts[] ALIGN1 =
27 "absolute\0" No_argument "a"
28 "remaining\0" No_argument "r"
29 "file\0" Required_argument "f"
32 applet_long_options = dumpleases_longopts;
36 opt_complementary = "=0:a--r:r--a";
37 opt = getopt32(argv, "arf:", &file);
39 fd = xopen(file, O_RDONLY);
41 printf("Mac Address IP Address Host Name Expires %s\n", (opt & OPT_a) ? "at" : "in");
42 /* "00:00:00:00:00:00 255.255.255.255 ABCDEFGHIJKLMNOPQRS Wed Jun 30 21:49:08 1993" */
43 /* "123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 */
45 xread(fd, &written_at, sizeof(written_at));
46 written_at = SWAP_BE64(written_at);
48 if (curr < written_at)
49 written_at = curr; /* lease file from future! :) */
51 while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
52 const char *fmt = ":%02x" + 1;
53 for (i = 0; i < 6; i++) {
54 printf(fmt, lease.lease_mac[i]);
57 addr.s_addr = lease.lease_nip;
58 #if ENABLE_UNICODE_SUPPORT
60 char *uni_name = unicode_conv_to_printable_fixedwidth(/*NULL,*/ lease.hostname, 19);
61 printf(" %-16s%s ", inet_ntoa(addr), uni_name);
65 /* actually, 15+1 and 19+1, +1 is a space between columns */
66 /* lease.hostname is char[20] and is always NUL terminated */
67 printf(" %-16s%-20s", inet_ntoa(addr), lease.hostname);
69 expires_abs = ntohl(lease.expires) + written_at;
70 if (expires_abs <= curr) {
74 if (!(opt & OPT_a)) { /* no -a */
76 unsigned expires = expires_abs - curr;
77 d = expires / (24*60*60); expires %= (24*60*60);
78 h = expires / (60*60); expires %= (60*60);
79 m = expires / 60; expires %= 60;
81 printf("%u days ", d);
82 printf("%02u:%02u:%02u\n", h, m, (unsigned)expires);
84 time_t t = expires_abs;
85 fputs(ctime(&t), stdout);