diff options
Diffstat (limited to 'networking/udhcp/dumpleases.c')
-rw-r--r-- | networking/udhcp/dumpleases.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c new file mode 100644 index 000000000..2b19d9768 --- /dev/null +++ b/networking/udhcp/dumpleases.c | |||
@@ -0,0 +1,112 @@ | |||
1 | #include <fcntl.h> | ||
2 | #include <string.h> | ||
3 | #include <stdlib.h> | ||
4 | #include <stdio.h> | ||
5 | #include <sys/wait.h> | ||
6 | #include <sys/stat.h> | ||
7 | #include <arpa/inet.h> | ||
8 | #include <netdb.h> | ||
9 | #include <netinet/in.h> | ||
10 | #include <stdio.h> | ||
11 | #include <sys/types.h> | ||
12 | #include <sys/socket.h> | ||
13 | #include <unistd.h> | ||
14 | #include <syslog.h> | ||
15 | #include <signal.h> | ||
16 | #include <errno.h> | ||
17 | #include <getopt.h> | ||
18 | #include <time.h> | ||
19 | |||
20 | #include "libbb_udhcp.h" | ||
21 | |||
22 | #define REMAINING 0 | ||
23 | #define ABSOLUTE 1 | ||
24 | |||
25 | struct lease_t { | ||
26 | unsigned char chaddr[16]; | ||
27 | u_int32_t yiaddr; | ||
28 | u_int32_t expires; | ||
29 | }; | ||
30 | |||
31 | #ifdef BB_VER | ||
32 | int dumpleases_main(int argc, char *argv[]) | ||
33 | #else | ||
34 | int main(int argc, char *argv[]) | ||
35 | #endif | ||
36 | { | ||
37 | FILE *fp; | ||
38 | int i, c, mode = REMAINING; | ||
39 | long expires; | ||
40 | char file[255] = "/var/lib/misc/udhcpd.leases"; | ||
41 | struct lease_t lease; | ||
42 | struct in_addr addr; | ||
43 | |||
44 | static struct option options[] = { | ||
45 | {"absolute", 0, 0, 'a'}, | ||
46 | {"remaining", 0, 0, 'r'}, | ||
47 | {"file", 1, 0, 'f'}, | ||
48 | {"help", 0, 0, 'h'}, | ||
49 | {0, 0, 0, 0} | ||
50 | }; | ||
51 | |||
52 | while (1) { | ||
53 | int option_index = 0; | ||
54 | c = getopt_long(argc, argv, "arf:h", options, &option_index); | ||
55 | if (c == -1) break; | ||
56 | |||
57 | switch (c) { | ||
58 | case 'a': mode = ABSOLUTE; break; | ||
59 | case 'r': mode = REMAINING; break; | ||
60 | case 'f': | ||
61 | strncpy(file, optarg, 255); | ||
62 | file[254] = '\0'; | ||
63 | break; | ||
64 | case 'h': | ||
65 | printf("Usage: dumpleases -f <file> -[r|a]\n\n"); | ||
66 | printf(" -f, --file=FILENAME Leases file to load\n"); | ||
67 | printf(" -r, --remaining Interepret lease times as time remaing\n"); | ||
68 | printf(" -a, --absolute Interepret lease times as expire time\n"); | ||
69 | break; | ||
70 | } | ||
71 | } | ||
72 | |||
73 | if (!(fp = fopen(file, "r"))) { | ||
74 | perror("could not open input file"); | ||
75 | return 0; | ||
76 | } | ||
77 | |||
78 | printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at"); | ||
79 | /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */ | ||
80 | while (fread(&lease, sizeof(lease), 1, fp)) { | ||
81 | |||
82 | for (i = 0; i < 6; i++) { | ||
83 | printf("%02x", lease.chaddr[i]); | ||
84 | if (i != 5) printf(":"); | ||
85 | } | ||
86 | addr.s_addr = lease.yiaddr; | ||
87 | printf(" %-15s", inet_ntoa(addr)); | ||
88 | expires = ntohl(lease.expires); | ||
89 | printf(" "); | ||
90 | if (mode == REMAINING) { | ||
91 | if (!expires) printf("expired\n"); | ||
92 | else { | ||
93 | if (expires > 60*60*24) { | ||
94 | printf("%ld days, ", expires / (60*60*24)); | ||
95 | expires %= 60*60*24; | ||
96 | } | ||
97 | if (expires > 60*60) { | ||
98 | printf("%ld hours, ", expires / (60*60)); | ||
99 | expires %= 60*60; | ||
100 | } | ||
101 | if (expires > 60) { | ||
102 | printf("%ld minutes, ", expires / 60); | ||
103 | expires %= 60; | ||
104 | } | ||
105 | printf("%ld seconds\n", expires); | ||
106 | } | ||
107 | } else printf("%s", ctime(&expires)); | ||
108 | } | ||
109 | fclose(fp); | ||
110 | |||
111 | return 0; | ||
112 | } | ||