/* vi: set sw=4 ts=4: */ /* * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */ #include #include "common.h" #include "dhcpd.h" #define REMAINING 0 #define ABSOLUTE 1 int dumpleases_main(int argc, char *argv[]); int dumpleases_main(int argc, char *argv[]) { int fp; int i, c, mode = REMAINING; unsigned long expires; const char *file = LEASES_FILE; struct dhcpOfferedAddr lease; struct in_addr addr; static const struct option options[] = { {"absolute", 0, 0, 'a'}, {"remaining", 0, 0, 'r'}, {"file", 1, 0, 'f'}, {0, 0, 0, 0} }; while (1) { int option_index = 0; c = getopt_long(argc, argv, "arf:", options, &option_index); if (c == -1) break; switch (c) { case 'a': mode = ABSOLUTE; break; case 'r': mode = REMAINING; break; case 'f': file = optarg; break; default: bb_show_usage(); } } fp = xopen(file, O_RDONLY); printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at"); /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */ while (full_read(fp, &lease, sizeof(lease)) == sizeof(lease)) { printf(":%02x"+1, lease.chaddr[0]); for (i = 1; i < 6; i++) { printf(":%02x", lease.chaddr[i]); } addr.s_addr = lease.yiaddr; printf(" %-15s ", inet_ntoa(addr)); expires = ntohl(lease.expires); if (mode == REMAINING) { if (!expires) printf("expired\n"); else { unsigned d, h, m; d = expires / (24*60*60); expires %= (24*60*60); h = expires / (60*60); expires %= (60*60); m = expires / 60; expires %= 60; if (d) printf("%u days ", d); printf("%02u:%02u:%02u\n", h, m, (unsigned)expires); } } else fputs(ctime(&expires), stdout); } /* close(fp); */ return 0; }