diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/udhcp/dumpleases.c | 61 |
1 files changed, 27 insertions, 34 deletions
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c index ce73c474c..80cf5b8f5 100644 --- a/networking/udhcp/dumpleases.c +++ b/networking/udhcp/dumpleases.c @@ -7,48 +7,40 @@ #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; + 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", 0, 0, 'a'}, - {"remaining", 0, 0, 'r'}, - {"file", 1, 0, 'f'}, - {0, 0, 0, 0} + { "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); - 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); + fd = xopen(file, O_RDONLY); - printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at"); + 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(fp, &lease, sizeof(lease)) == sizeof(lease)) { + 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]); @@ -56,9 +48,9 @@ int dumpleases_main(int argc, char *argv[]) addr.s_addr = lease.yiaddr; printf(" %-15s ", inet_ntoa(addr)); expires = ntohl(lease.expires); - if (mode == REMAINING) { + if (!(opt & OPT_a)) { /* no -a */ if (!expires) - printf("expired\n"); + puts("expired"); else { unsigned d, h, m; d = expires / (24*60*60); expires %= (24*60*60); @@ -67,9 +59,10 @@ int dumpleases_main(int argc, char *argv[]) if (d) printf("%u days ", d); printf("%02u:%02u:%02u\n", h, m, (unsigned)expires); } - } else fputs(ctime(&expires), stdout); + } else /* -a */ + fputs(ctime(&expires), stdout); } - /* close(fp); */ + /* close(fd); */ return 0; } |