summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--networking/udhcp/dumpleases.c61
1 files changed, 27 insertions, 34 deletions
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index ce73c47..80cf5b8 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;
}