dumpleases: getopt32()-ization

(from Mats Erik Andersson <mats.andersson64@comhem.se>)

diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index ce73c47..80cf5b8 100644 (file)
--- 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;
 }