10 |
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
11 |
*/ |
*/ |
12 |
|
|
|
#include "libbb.h" |
|
|
|
|
13 |
/* This 'date' command supports only 2 time setting formats, |
/* This 'date' command supports only 2 time setting formats, |
14 |
all the GNU strftime stuff (its in libc, lets use it), |
all the GNU strftime stuff (its in libc, lets use it), |
15 |
setting time using UTC and displaying it, as well as |
setting time using UTC and displaying it, as well as |
21 |
|
|
22 |
/* Default input handling to save surprising some people */ |
/* Default input handling to save surprising some people */ |
23 |
|
|
24 |
|
/* GNU coreutils 6.9 man page: |
25 |
|
* date [OPTION]... [+FORMAT] |
26 |
|
* date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]] |
27 |
|
* -d, --date=STRING |
28 |
|
* display time described by STRING, not `now' |
29 |
|
* -f, --file=DATEFILE |
30 |
|
* like --date once for each line of DATEFILE |
31 |
|
* -r, --reference=FILE |
32 |
|
* display the last modification time of FILE |
33 |
|
* -R, --rfc-2822 |
34 |
|
* output date and time in RFC 2822 format. |
35 |
|
* Example: Mon, 07 Aug 2006 12:34:56 -0600 |
36 |
|
* --rfc-3339=TIMESPEC |
37 |
|
* output date and time in RFC 3339 format. |
38 |
|
* TIMESPEC='date', 'seconds', or 'ns' |
39 |
|
* Date and time components are separated by a single space: |
40 |
|
* 2006-08-07 12:34:56-06:00 |
41 |
|
* -s, --set=STRING |
42 |
|
* set time described by STRING |
43 |
|
* -u, --utc, --universal |
44 |
|
* print or set Coordinated Universal Time |
45 |
|
* |
46 |
|
* Busybox: |
47 |
|
* long options are not supported |
48 |
|
* -f is not supported |
49 |
|
* -I seems to roughly match --rfc-3339, but -I has _optional_ param |
50 |
|
* (thus "-I seconds" doesn't work, only "-Iseconds"), |
51 |
|
* and does not support -Ins |
52 |
|
* -D FMT is a bbox extension for _input_ conversion of -d DATE |
53 |
|
*/ |
54 |
|
#include "libbb.h" |
55 |
|
|
56 |
#define DATE_OPT_RFC2822 0x01 |
enum { |
57 |
#define DATE_OPT_SET 0x02 |
OPT_RFC2822 = (1 << 0), /* R */ |
58 |
#define DATE_OPT_UTC 0x04 |
OPT_SET = (1 << 1), /* s */ |
59 |
#define DATE_OPT_DATE 0x08 |
OPT_UTC = (1 << 2), /* u */ |
60 |
#define DATE_OPT_REFERENCE 0x10 |
OPT_DATE = (1 << 3), /* d */ |
61 |
#define DATE_OPT_TIMESPEC 0x20 |
OPT_REFERENCE = (1 << 4), /* r */ |
62 |
#define DATE_OPT_HINT 0x40 |
OPT_TIMESPEC = (1 << 5) * ENABLE_FEATURE_DATE_ISOFMT, /* I */ |
63 |
|
OPT_HINT = (1 << 6) * ENABLE_FEATURE_DATE_ISOFMT, /* D */ |
64 |
|
}; |
65 |
|
|
66 |
static void maybe_set_utc(int opt) |
static void maybe_set_utc(int opt) |
67 |
{ |
{ |
68 |
if (opt & DATE_OPT_UTC) |
if (opt & OPT_UTC) |
69 |
putenv((char*)"TZ=UTC0"); |
putenv((char*)"TZ=UTC0"); |
70 |
} |
} |
71 |
|
|
72 |
|
#if ENABLE_LONG_OPTS |
73 |
|
static const char date_longopts[] ALIGN1 = |
74 |
|
"rfc-822\0" No_argument "R" |
75 |
|
"rfc-2822\0" No_argument "R" |
76 |
|
"set\0" Required_argument "s" |
77 |
|
"utc\0" No_argument "u" |
78 |
|
/* "universal\0" No_argument "u" */ |
79 |
|
"date\0" Required_argument "d" |
80 |
|
"reference\0" Required_argument "r" |
81 |
|
; |
82 |
|
#endif |
83 |
|
|
84 |
int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
85 |
int date_main(int argc UNUSED_PARAM, char **argv) |
int date_main(int argc UNUSED_PARAM, char **argv) |
86 |
{ |
{ |
87 |
struct tm tm_time; |
struct tm tm_time; |
88 |
|
char buf_fmt_dt2str[64]; |
89 |
time_t tm; |
time_t tm; |
90 |
unsigned opt; |
unsigned opt; |
91 |
int ifmt = -1; |
int ifmt = -1; |
96 |
char *isofmt_arg = NULL; |
char *isofmt_arg = NULL; |
97 |
|
|
98 |
opt_complementary = "d--s:s--d" |
opt_complementary = "d--s:s--d" |
99 |
USE_FEATURE_DATE_ISOFMT(":R--I:I--R"); |
IF_FEATURE_DATE_ISOFMT(":R--I:I--R"); |
100 |
|
IF_LONG_OPTS(applet_long_options = date_longopts;) |
101 |
opt = getopt32(argv, "Rs:ud:r:" |
opt = getopt32(argv, "Rs:ud:r:" |
102 |
USE_FEATURE_DATE_ISOFMT("I::D:"), |
IF_FEATURE_DATE_ISOFMT("I::D:"), |
103 |
&date_str, &date_str, &filename |
&date_str, &date_str, &filename |
104 |
USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt)); |
IF_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt)); |
105 |
argv += optind; |
argv += optind; |
106 |
maybe_set_utc(opt); |
maybe_set_utc(opt); |
107 |
|
|
108 |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) { |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_TIMESPEC)) { |
109 |
ifmt = 0; /* default is date */ |
ifmt = 0; /* default is date */ |
110 |
if (isofmt_arg) { |
if (isofmt_arg) { |
111 |
static const char isoformats[] ALIGN1 = |
static const char isoformats[] ALIGN1 = |
112 |
"date\0""hours\0""minutes\0""seconds\0"; |
"date\0""hours\0""minutes\0""seconds\0"; /* ns? */ |
113 |
ifmt = index_in_strings(isoformats, isofmt_arg); |
ifmt = index_in_substrings(isoformats, isofmt_arg); |
114 |
if (ifmt < 0) |
if (ifmt < 0) |
115 |
bb_show_usage(); |
bb_show_usage(); |
116 |
} |
} |
118 |
|
|
119 |
fmt_dt2str = NULL; |
fmt_dt2str = NULL; |
120 |
if (argv[0] && argv[0][0] == '+') { |
if (argv[0] && argv[0][0] == '+') { |
121 |
fmt_dt2str = &argv[0][1]; /* Skip over the '+' */ |
fmt_dt2str = &argv[0][1]; /* skip over the '+' */ |
122 |
argv++; |
argv++; |
123 |
} |
} |
124 |
if (!(opt & (DATE_OPT_SET | DATE_OPT_DATE))) { |
if (!(opt & (OPT_SET | OPT_DATE))) { |
125 |
opt |= DATE_OPT_SET; |
opt |= OPT_SET; |
126 |
date_str = argv[0]; /* can be NULL */ |
date_str = argv[0]; /* can be NULL */ |
127 |
if (date_str) |
if (date_str) { |
128 |
|
#if ENABLE_FEATURE_DATE_COMPAT |
129 |
|
int len = strspn(date_str, "0123456789"); |
130 |
|
if (date_str[len] == '\0' |
131 |
|
|| (date_str[len] == '.' |
132 |
|
&& isdigit(date_str[len+1]) |
133 |
|
&& isdigit(date_str[len+2]) |
134 |
|
&& date_str[len+3] == '\0' |
135 |
|
) |
136 |
|
) { |
137 |
|
/* Dreaded MMDDhhmm[[CC]YY][.ss] format! |
138 |
|
* It does not match -d or -s format. |
139 |
|
* Some users actually do use it. |
140 |
|
*/ |
141 |
|
len -= 8; |
142 |
|
if (len < 0 || len > 4 || (len & 1)) |
143 |
|
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
144 |
|
if (len != 0) { /* move YY or CCYY to front */ |
145 |
|
char buf[4]; |
146 |
|
memcpy(buf, date_str + 8, len); |
147 |
|
memmove(date_str + len, date_str, 8); |
148 |
|
memcpy(date_str, buf, len); |
149 |
|
} |
150 |
|
} |
151 |
|
#endif |
152 |
argv++; |
argv++; |
153 |
|
} |
154 |
} |
} |
155 |
if (*argv) |
if (*argv) |
156 |
bb_show_usage(); |
bb_show_usage(); |
157 |
|
|
158 |
/* Now we have parsed all the information except the date format |
/* Now we have parsed all the information except the date format |
159 |
which depends on whether the clock is being set or read */ |
* which depends on whether the clock is being set or read */ |
160 |
|
|
161 |
if (opt & DATE_OPT_REFERENCE) { |
if (opt & OPT_REFERENCE) { |
162 |
struct stat statbuf; |
struct stat statbuf; |
163 |
xstat(filename, &statbuf); |
xstat(filename, &statbuf); |
164 |
tm = statbuf.st_mtime; |
tm = statbuf.st_mtime; |
165 |
} else |
} else { |
166 |
time(&tm); |
time(&tm); |
167 |
memcpy(&tm_time, localtime(&tm), sizeof(tm_time)); |
} |
168 |
|
localtime_r(&tm, &tm_time); |
169 |
|
|
170 |
/* If date string is given, update tm_time, and maybe set date */ |
/* If date string is given, update tm_time, and maybe set date */ |
171 |
if (date_str != NULL) { |
if (date_str != NULL) { |
175 |
tm_time.tm_hour = 0; |
tm_time.tm_hour = 0; |
176 |
|
|
177 |
/* Process any date input to UNIX time since 1 Jan 1970 */ |
/* Process any date input to UNIX time since 1 Jan 1970 */ |
178 |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) { |
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_HINT)) { |
179 |
if (strptime(date_str, fmt_str2dt, &tm_time) == NULL) |
if (strptime(date_str, fmt_str2dt, &tm_time) == NULL) |
180 |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
181 |
} else { |
} else { |
182 |
char end = '\0'; |
parse_datestr(date_str, &tm_time); |
|
const char *last_colon = strrchr(date_str, ':'); |
|
|
|
|
|
if (last_colon != NULL) { |
|
|
/* Parse input and assign appropriately to tm_time */ |
|
|
|
|
|
if (sscanf(date_str, "%u:%u%c", |
|
|
&tm_time.tm_hour, |
|
|
&tm_time.tm_min, |
|
|
&end) >= 2) { |
|
|
/* no adjustments needed */ |
|
|
} else if (sscanf(date_str, "%u.%u-%u:%u%c", |
|
|
&tm_time.tm_mon, &tm_time.tm_mday, |
|
|
&tm_time.tm_hour, &tm_time.tm_min, |
|
|
&end) >= 4) { |
|
|
/* Adjust dates from 1-12 to 0-11 */ |
|
|
tm_time.tm_mon -= 1; |
|
|
} else if (sscanf(date_str, "%u.%u.%u-%u:%u%c", &tm_time.tm_year, |
|
|
&tm_time.tm_mon, &tm_time.tm_mday, |
|
|
&tm_time.tm_hour, &tm_time.tm_min, |
|
|
&end) >= 5) { |
|
|
tm_time.tm_year -= 1900; /* Adjust years */ |
|
|
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
|
|
} else if (sscanf(date_str, "%u-%u-%u %u:%u%c", &tm_time.tm_year, |
|
|
&tm_time.tm_mon, &tm_time.tm_mday, |
|
|
&tm_time.tm_hour, &tm_time.tm_min, |
|
|
&end) >= 5) { |
|
|
tm_time.tm_year -= 1900; /* Adjust years */ |
|
|
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ |
|
|
//TODO: coreutils 6.9 also accepts "YYYY-MM-DD HH" (no minutes) |
|
|
} else { |
|
|
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
|
|
} |
|
|
if (end == ':') { |
|
|
if (sscanf(last_colon + 1, "%u%c", &tm_time.tm_sec, &end) == 1) |
|
|
end = '\0'; |
|
|
/* else end != NUL and we error out */ |
|
|
} |
|
|
} else { |
|
|
if (sscanf(date_str, "%2u%2u%2u%2u%u%c", &tm_time.tm_mon, |
|
|
&tm_time.tm_mday, &tm_time.tm_hour, &tm_time.tm_min, |
|
|
&tm_time.tm_year, &end) < 4) |
|
|
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
|
|
/* correct for century - minor Y2K problem here? */ |
|
|
if (tm_time.tm_year >= 1900) { |
|
|
tm_time.tm_year -= 1900; |
|
|
} |
|
|
/* adjust date */ |
|
|
tm_time.tm_mon -= 1; |
|
|
if (end == '.') { |
|
|
if (sscanf(strchr(date_str, '.') + 1, "%u%c", |
|
|
&tm_time.tm_sec, &end) == 1) |
|
|
end = '\0'; |
|
|
/* else end != NUL and we error out */ |
|
|
} |
|
|
} |
|
|
if (end != '\0') { |
|
|
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
|
|
} |
|
183 |
} |
} |
184 |
|
|
185 |
/* Correct any day of week and day of year etc. fields */ |
/* Correct any day of week and day of year etc. fields */ |
186 |
tm_time.tm_isdst = -1; /* Be sure to recheck dst. */ |
tm_time.tm_isdst = -1; /* Be sure to recheck dst */ |
187 |
tm = mktime(&tm_time); |
tm = validate_tm_time(date_str, &tm_time); |
188 |
if (tm < 0) { |
|
|
bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
|
|
} |
|
189 |
maybe_set_utc(opt); |
maybe_set_utc(opt); |
190 |
|
|
191 |
/* if setting time, set it */ |
/* if setting time, set it */ |
192 |
if ((opt & DATE_OPT_SET) && stime(&tm) < 0) { |
if ((opt & OPT_SET) && stime(&tm) < 0) { |
193 |
bb_perror_msg("cannot set date"); |
bb_perror_msg("can't set date"); |
194 |
} |
} |
195 |
} |
} |
196 |
|
|
199 |
/* Deal with format string */ |
/* Deal with format string */ |
200 |
if (fmt_dt2str == NULL) { |
if (fmt_dt2str == NULL) { |
201 |
int i; |
int i; |
202 |
fmt_dt2str = xzalloc(32); |
fmt_dt2str = buf_fmt_dt2str; |
203 |
if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) { |
if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) { |
204 |
strcpy(fmt_dt2str, "%Y-%m-%d"); |
/* -I[SPEC]: 0:date 1:hours 2:minutes 3:seconds */ |
205 |
if (ifmt > 0) { |
strcpy(fmt_dt2str, "%Y-%m-%dT%H:%M:%S"); |
206 |
i = 8; |
i = 8 + 3 * ifmt; |
207 |
fmt_dt2str[i++] = 'T'; |
if (ifmt != 0) { |
208 |
fmt_dt2str[i++] = '%'; |
/* TODO: if (ifmt==4) i += sprintf(&fmt_dt2str[i], ",%09u", nanoseconds); */ |
|
fmt_dt2str[i++] = 'H'; |
|
|
if (ifmt > 1) { |
|
|
fmt_dt2str[i++] = ':'; |
|
|
fmt_dt2str[i++] = '%'; |
|
|
fmt_dt2str[i++] = 'M'; |
|
|
if (ifmt > 2) { |
|
|
fmt_dt2str[i++] = ':'; |
|
|
fmt_dt2str[i++] = '%'; |
|
|
fmt_dt2str[i++] = 'S'; |
|
|
} |
|
|
} |
|
209 |
format_utc: |
format_utc: |
210 |
fmt_dt2str[i++] = '%'; |
fmt_dt2str[i++] = '%'; |
211 |
fmt_dt2str[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z'; |
fmt_dt2str[i++] = (opt & OPT_UTC) ? 'Z' : 'z'; |
212 |
} |
} |
213 |
} else if (opt & DATE_OPT_RFC2822) { |
fmt_dt2str[i] = '\0'; |
214 |
/* Undo busybox.c for date -R */ |
} else if (opt & OPT_RFC2822) { |
215 |
|
/* -R. undo busybox.c setlocale */ |
216 |
if (ENABLE_LOCALE_SUPPORT) |
if (ENABLE_LOCALE_SUPPORT) |
217 |
setlocale(LC_TIME, "C"); |
setlocale(LC_TIME, "C"); |
218 |
strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S "); |
strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S "); |
219 |
i = 22; |
i = sizeof("%a, %d %b %Y %H:%M:%S ")-1; |
220 |
goto format_utc; |
goto format_utc; |
221 |
} else /* default case */ |
} else { /* default case */ |
222 |
fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y"; |
fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y"; |
223 |
|
} |
224 |
} |
} |
225 |
|
|
226 |
#define date_buf bb_common_bufsiz1 |
#define date_buf bb_common_bufsiz1 |
232 |
if (strncmp(fmt_dt2str, "%f", 2) == 0) { |
if (strncmp(fmt_dt2str, "%f", 2) == 0) { |
233 |
fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S"; |
fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S"; |
234 |
} |
} |
|
|
|
235 |
/* Generate output string */ |
/* Generate output string */ |
236 |
strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time); |
strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time); |
237 |
} |
} |