1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
|
---|
4 | */
|
---|
5 | #include <fcntl.h>
|
---|
6 | #include <string.h>
|
---|
7 | #include <stdlib.h>
|
---|
8 | #include <stdio.h>
|
---|
9 | #include <sys/wait.h>
|
---|
10 | #include <arpa/inet.h>
|
---|
11 | #include <netdb.h>
|
---|
12 | #include <netinet/in.h>
|
---|
13 | #include <stdio.h>
|
---|
14 | #include <sys/socket.h>
|
---|
15 | #include <unistd.h>
|
---|
16 | #include <getopt.h>
|
---|
17 | #include <time.h>
|
---|
18 |
|
---|
19 | #include "dhcpd.h"
|
---|
20 | #include "leases.h"
|
---|
21 | #include "libbb_udhcp.h"
|
---|
22 |
|
---|
23 | #define REMAINING 0
|
---|
24 | #define ABSOLUTE 1
|
---|
25 |
|
---|
26 |
|
---|
27 | #ifndef IN_BUSYBOX
|
---|
28 | static void ATTRIBUTE_NORETURN show_usage(void)
|
---|
29 | {
|
---|
30 | printf(
|
---|
31 | "Usage: dumpleases -f <file> -[r|a]\n\n"
|
---|
32 | " -f, --file=FILENAME Leases file to load\n"
|
---|
33 | " -r, --remaining Interepret lease times as time remaining\n"
|
---|
34 | " -a, --absolute Interepret lease times as expire time\n");
|
---|
35 | exit(0);
|
---|
36 | }
|
---|
37 | #else
|
---|
38 | #define show_usage bb_show_usage
|
---|
39 | #endif
|
---|
40 |
|
---|
41 |
|
---|
42 | #ifdef IN_BUSYBOX
|
---|
43 | int dumpleases_main(int argc, char *argv[])
|
---|
44 | #else
|
---|
45 | int main(int argc, char *argv[])
|
---|
46 | #endif
|
---|
47 | {
|
---|
48 | FILE *fp;
|
---|
49 | int i, c, mode = REMAINING;
|
---|
50 | long expires;
|
---|
51 | const char *file = LEASES_FILE;
|
---|
52 | struct dhcpOfferedAddr lease;
|
---|
53 | struct in_addr addr;
|
---|
54 |
|
---|
55 | static const struct option options[] = {
|
---|
56 | {"absolute", 0, 0, 'a'},
|
---|
57 | {"remaining", 0, 0, 'r'},
|
---|
58 | {"file", 1, 0, 'f'},
|
---|
59 | {0, 0, 0, 0}
|
---|
60 | };
|
---|
61 |
|
---|
62 | while (1) {
|
---|
63 | int option_index = 0;
|
---|
64 | c = getopt_long(argc, argv, "arf:", options, &option_index);
|
---|
65 | if (c == -1) break;
|
---|
66 |
|
---|
67 | switch (c) {
|
---|
68 | case 'a': mode = ABSOLUTE; break;
|
---|
69 | case 'r': mode = REMAINING; break;
|
---|
70 | case 'f':
|
---|
71 | file = optarg;
|
---|
72 | break;
|
---|
73 | default:
|
---|
74 | show_usage();
|
---|
75 | }
|
---|
76 | }
|
---|
77 |
|
---|
78 | fp = xfopen(file, "r");
|
---|
79 |
|
---|
80 | printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at");
|
---|
81 | /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */
|
---|
82 | while (fread(&lease, sizeof(lease), 1, fp)) {
|
---|
83 |
|
---|
84 | for (i = 0; i < 6; i++) {
|
---|
85 | printf("%02x", lease.chaddr[i]);
|
---|
86 | if (i != 5) printf(":");
|
---|
87 | }
|
---|
88 | addr.s_addr = lease.yiaddr;
|
---|
89 | printf(" %-15s", inet_ntoa(addr));
|
---|
90 | expires = ntohl(lease.expires);
|
---|
91 | printf(" ");
|
---|
92 | if (mode == REMAINING) {
|
---|
93 | if (!expires) printf("expired\n");
|
---|
94 | else {
|
---|
95 | if (expires > 60*60*24) {
|
---|
96 | printf("%ld days, ", expires / (60*60*24));
|
---|
97 | expires %= 60*60*24;
|
---|
98 | }
|
---|
99 | if (expires > 60*60) {
|
---|
100 | printf("%ld hours, ", expires / (60*60));
|
---|
101 | expires %= 60*60;
|
---|
102 | }
|
---|
103 | if (expires > 60) {
|
---|
104 | printf("%ld minutes, ", expires / 60);
|
---|
105 | expires %= 60;
|
---|
106 | }
|
---|
107 | printf("%ld seconds\n", expires);
|
---|
108 | }
|
---|
109 | } else printf("%s", ctime(&expires));
|
---|
110 | }
|
---|
111 | fclose(fp);
|
---|
112 |
|
---|
113 | return 0;
|
---|
114 | }
|
---|