| /* vi: set sw=4 ts=4: */ |
| /* |
| * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
| */ |
| #include <getopt.h> |
| |
| #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; |
| } |