/* 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" int dumpleases_main(int argc, char **argv); int dumpleases_main(int argc, char **argv) { int fd; int i; unsigned opt; time_t expires; const char *file = LEASES_FILE; struct dhcpOfferedAddr lease; struct in_addr addr; enum { OPT_a = 0x1, // -a OPT_r = 0x2, // -r OPT_f = 0x4, // -f }; #if ENABLE_GETOPT_LONG static const struct option options[] = { { "absolute", no_argument, 0, 'a' }, { "remaining", no_argument, 0, 'r' }, { "file", required_argument, 0, 'f' }, { NULL, 0, 0, 0 } }; applet_long_options = options; #endif opt_complementary = "=0:a--r:r--a"; opt = getopt32(argc, argv, "arf:", &file); fd = xopen(file, O_RDONLY); printf("Mac Address IP-Address Expires %s\n", (opt & OPT_a) ? "at" : "in"); /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */ while (full_read(fd, &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 (!(opt & OPT_a)) { /* no -a */ if (!expires) puts("expired"); 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 /* -a */ fputs(ctime(&expires), stdout); } /* close(fd); */ return 0; }