Annotation of /trunk/mkinitrd-magellan/busybox/networking/udhcp/dumpleases.c
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Revision 1123 -
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Wed Aug 18 21:56:57 2010 UTC (13 years, 9 months ago) by niro
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File size: 2716 byte(s)
Wed Aug 18 21:56:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 2716 byte(s)
-updated to busybox-1.17.1
1 | niro | 532 | /* 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 "common.h" | ||
6 | #include "dhcpd.h" | ||
7 | niro | 984 | #include "unicode.h" |
8 | niro | 532 | |
9 | niro | 984 | #if BB_LITTLE_ENDIAN |
10 | static inline uint64_t hton64(uint64_t v) | ||
11 | { | ||
12 | return (((uint64_t)htonl(v)) << 32) | htonl(v >> 32); | ||
13 | } | ||
14 | #else | ||
15 | #define hton64(v) (v) | ||
16 | #endif | ||
17 | #define ntoh64(v) hton64(v) | ||
18 | |||
19 | |||
20 | niro | 816 | int dumpleases_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
21 | int dumpleases_main(int argc UNUSED_PARAM, char **argv) | ||
22 | niro | 532 | { |
23 | niro | 816 | int fd; |
24 | int i; | ||
25 | unsigned opt; | ||
26 | niro | 984 | int64_t written_at, curr, expires_abs; |
27 | niro | 532 | const char *file = LEASES_FILE; |
28 | niro | 984 | struct dyn_lease lease; |
29 | niro | 532 | struct in_addr addr; |
30 | |||
31 | niro | 816 | enum { |
32 | OPT_a = 0x1, // -a | ||
33 | OPT_r = 0x2, // -r | ||
34 | OPT_f = 0x4, // -f | ||
35 | niro | 532 | }; |
36 | niro | 984 | #if ENABLE_LONG_OPTS |
37 | niro | 816 | static const char dumpleases_longopts[] ALIGN1 = |
38 | "absolute\0" No_argument "a" | ||
39 | "remaining\0" No_argument "r" | ||
40 | "file\0" Required_argument "f" | ||
41 | ; | ||
42 | niro | 532 | |
43 | niro | 816 | applet_long_options = dumpleases_longopts; |
44 | #endif | ||
45 | niro | 984 | init_unicode(); |
46 | |||
47 | niro | 816 | opt_complementary = "=0:a--r:r--a"; |
48 | opt = getopt32(argv, "arf:", &file); | ||
49 | niro | 532 | |
50 | niro | 816 | fd = xopen(file, O_RDONLY); |
51 | niro | 532 | |
52 | niro | 984 | printf("Mac Address IP Address Host Name Expires %s\n", (opt & OPT_a) ? "at" : "in"); |
53 | /* "00:00:00:00:00:00 255.255.255.255 ABCDEFGHIJKLMNOPQRS Wed Jun 30 21:49:08 1993" */ | ||
54 | /* "123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 */ | ||
55 | |||
56 | niro | 1123 | xread(fd, &written_at, sizeof(written_at)); |
57 | niro | 984 | written_at = ntoh64(written_at); |
58 | curr = time(NULL); | ||
59 | if (curr < written_at) | ||
60 | written_at = curr; /* lease file from future! :) */ | ||
61 | |||
62 | niro | 816 | while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) { |
63 | niro | 984 | const char *fmt = ":%02x" + 1; |
64 | for (i = 0; i < 6; i++) { | ||
65 | printf(fmt, lease.lease_mac[i]); | ||
66 | fmt = ":%02x"; | ||
67 | niro | 532 | } |
68 | niro | 984 | addr.s_addr = lease.lease_nip; |
69 | niro | 1123 | #if ENABLE_UNICODE_SUPPORT |
70 | { | ||
71 | char *uni_name = unicode_conv_to_printable_fixedwidth(NULL, lease.hostname, 19); | ||
72 | printf(" %-16s%s ", inet_ntoa(addr), uni_name); | ||
73 | free(uni_name); | ||
74 | } | ||
75 | #else | ||
76 | niro | 984 | /* actually, 15+1 and 19+1, +1 is a space between columns */ |
77 | /* lease.hostname is char[20] and is always NUL terminated */ | ||
78 | printf(" %-16s%-20s", inet_ntoa(addr), lease.hostname); | ||
79 | #endif | ||
80 | expires_abs = ntohl(lease.expires) + written_at; | ||
81 | if (expires_abs <= curr) { | ||
82 | puts("expired"); | ||
83 | continue; | ||
84 | } | ||
85 | niro | 816 | if (!(opt & OPT_a)) { /* no -a */ |
86 | niro | 984 | unsigned d, h, m; |
87 | unsigned expires = expires_abs - curr; | ||
88 | d = expires / (24*60*60); expires %= (24*60*60); | ||
89 | h = expires / (60*60); expires %= (60*60); | ||
90 | m = expires / 60; expires %= 60; | ||
91 | if (d) | ||
92 | printf("%u days ", d); | ||
93 | printf("%02u:%02u:%02u\n", h, m, (unsigned)expires); | ||
94 | } else { /* -a */ | ||
95 | time_t t = expires_abs; | ||
96 | fputs(ctime(&t), stdout); | ||
97 | } | ||
98 | niro | 532 | } |
99 | niro | 816 | /* close(fd); */ |
100 | niro | 532 | |
101 | return 0; | ||
102 | } |