Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | 2ce1edc | 1999-10-12 15:42:48 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini date implementation for busybox |
| 4 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 5 | * by Matthew Grant <grantma@anathoth.gen.nz> |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 6 | * |
Robert Griebl | 6859d76 | 2002-08-05 02:57:12 +0000 | [diff] [blame] | 7 | * iso-format handling added by Robert Griebl <griebl@gmx.de> |
Bernhard Reutner-Fischer | 6c4dade | 2008-09-25 12:13:34 +0000 | [diff] [blame] | 8 | * bugfixes and cleanup by Bernhard Reutner-Fischer |
Eric Andersen | 2ce1edc | 1999-10-12 15:42:48 +0000 | [diff] [blame] | 9 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 10 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
Eric Andersen | 2ce1edc | 1999-10-12 15:42:48 +0000 | [diff] [blame] | 11 | */ |
| 12 | |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 13 | /* This 'date' command supports only 2 time setting formats, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 14 | all the GNU strftime stuff (its in libc, lets use it), |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 15 | setting time using UTC and displaying it, as well as |
| 16 | an RFC 2822 compliant date output for shell scripting |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 17 | mail commands */ |
| 18 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 19 | /* Input parsing code is always bulky - used heavy duty libc stuff as |
| 20 | much as possible, missed out a lot of bounds checking */ |
| 21 | |
Denys Vlasenko | f2710d0 | 2010-10-15 10:42:17 +0200 | [diff] [blame] | 22 | //applet:IF_DATE(APPLET(date, _BB_DIR_BIN, _BB_SUID_DROP)) |
| 23 | |
| 24 | //kbuild:lib-$(CONFIG_DATE) += date.o |
| 25 | |
| 26 | //config:config DATE |
| 27 | //config: bool "date" |
| 28 | //config: default y |
| 29 | //config: help |
| 30 | //config: date is used to set the system date or display the |
| 31 | //config: current time in the given format. |
| 32 | //config: |
| 33 | //config:config FEATURE_DATE_ISOFMT |
| 34 | //config: bool "Enable ISO date format output (-I)" |
| 35 | //config: default y |
| 36 | //config: depends on DATE |
| 37 | //config: help |
| 38 | //config: Enable option (-I) to output an ISO-8601 compliant |
| 39 | //config: date/time string. |
| 40 | //config: |
| 41 | //config:# defaults to "no": stat's nanosecond field is a bit non-portable |
| 42 | //config:config FEATURE_DATE_NANO |
| 43 | //config: bool "Support %[num]N nanosecond format specifier" |
| 44 | //config: default n |
| 45 | //config: depends on DATE && PLATFORM_LINUX # syscall(__NR_clock_gettime) |
| 46 | //config: help |
| 47 | //config: Support %[num]N format specifier. Adds ~250 bytes of code. |
| 48 | //config: |
| 49 | //config:config FEATURE_DATE_COMPAT |
| 50 | //config: bool "Support weird 'date MMDDhhmm[[YY]YY][.ss]' format" |
| 51 | //config: default y |
| 52 | //config: depends on DATE |
| 53 | //config: help |
| 54 | //config: System time can be set by 'date -s DATE' and simply 'date DATE', |
| 55 | //config: but formats of DATE string are different. 'date DATE' accepts |
| 56 | //config: a rather weird MMDDhhmm[[YY]YY][.ss] format with completely |
| 57 | //config: unnatural placement of year between minutes and seconds. |
| 58 | //config: date -s (and other commands like touch -d) use more sensible |
| 59 | //config: formats (for one, ISO format YYYY-MM-DD hh:mm:ss.ssssss). |
| 60 | //config: |
| 61 | //config: With this option off, 'date DATE' is 'date -s DATE' support |
| 62 | //config: the same format. With it on, 'date DATE' additionally supports |
| 63 | //config: MMDDhhmm[[YY]YY][.ss] format. |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 64 | |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 65 | /* GNU coreutils 6.9 man page: |
| 66 | * date [OPTION]... [+FORMAT] |
| 67 | * date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]] |
| 68 | * -d, --date=STRING |
| 69 | * display time described by STRING, not `now' |
| 70 | * -f, --file=DATEFILE |
| 71 | * like --date once for each line of DATEFILE |
| 72 | * -r, --reference=FILE |
| 73 | * display the last modification time of FILE |
| 74 | * -R, --rfc-2822 |
| 75 | * output date and time in RFC 2822 format. |
| 76 | * Example: Mon, 07 Aug 2006 12:34:56 -0600 |
| 77 | * --rfc-3339=TIMESPEC |
| 78 | * output date and time in RFC 3339 format. |
| 79 | * TIMESPEC='date', 'seconds', or 'ns' |
| 80 | * Date and time components are separated by a single space: |
| 81 | * 2006-08-07 12:34:56-06:00 |
| 82 | * -s, --set=STRING |
| 83 | * set time described by STRING |
| 84 | * -u, --utc, --universal |
| 85 | * print or set Coordinated Universal Time |
| 86 | * |
| 87 | * Busybox: |
| 88 | * long options are not supported |
| 89 | * -f is not supported |
| 90 | * -I seems to roughly match --rfc-3339, but -I has _optional_ param |
| 91 | * (thus "-I seconds" doesn't work, only "-Iseconds"), |
| 92 | * and does not support -Ins |
| 93 | * -D FMT is a bbox extension for _input_ conversion of -d DATE |
| 94 | */ |
Denys Vlasenko | e4070cb | 2010-06-04 19:59:49 +0200 | [diff] [blame] | 95 | |
Denys Vlasenko | f2710d0 | 2010-10-15 10:42:17 +0200 | [diff] [blame] | 96 | //usage:#define date_trivial_usage |
| 97 | //usage: "[OPTIONS] [+FMT] [TIME]" |
| 98 | //usage:#define date_full_usage "\n\n" |
| 99 | //usage: "Display time (using +FMT), or set time\n" |
| 100 | //usage: "\nOptions:" |
| 101 | //usage: IF_NOT_LONG_OPTS( |
| 102 | //usage: "\n [-s] TIME Set time to TIME" |
| 103 | //usage: "\n -u Work in UTC (don't convert to local time)" |
| 104 | //usage: "\n -R Output RFC-2822 compliant date string" |
| 105 | //usage: ) IF_LONG_OPTS( |
| 106 | //usage: "\n [-s,--set] TIME Set time to TIME" |
| 107 | //usage: "\n -u,--utc Work in UTC (don't convert to local time)" |
| 108 | //usage: "\n -R,--rfc-2822 Output RFC-2822 compliant date string" |
| 109 | //usage: ) |
| 110 | //usage: IF_FEATURE_DATE_ISOFMT( |
| 111 | //usage: "\n -I[SPEC] Output ISO-8601 compliant date string" |
| 112 | //usage: "\n SPEC='date' (default) for date only," |
| 113 | //usage: "\n 'hours', 'minutes', or 'seconds' for date and" |
| 114 | //usage: "\n time to the indicated precision" |
| 115 | //usage: ) |
| 116 | //usage: IF_NOT_LONG_OPTS( |
| 117 | //usage: "\n -r FILE Display last modification time of FILE" |
| 118 | //usage: "\n -d TIME Display TIME, not 'now'" |
| 119 | //usage: ) IF_LONG_OPTS( |
| 120 | //usage: "\n -r,--reference FILE Display last modification time of FILE" |
| 121 | //usage: "\n -d,--date TIME Display TIME, not 'now'" |
| 122 | //usage: ) |
| 123 | //usage: IF_FEATURE_DATE_ISOFMT( |
| 124 | //usage: "\n -D FMT Use FMT for -d TIME conversion" |
| 125 | //usage: ) |
| 126 | //usage: "\n" |
| 127 | //usage: "\nRecognized TIME formats:" |
| 128 | //usage: "\n hh:mm[:ss]" |
| 129 | //usage: "\n [YYYY.]MM.DD-hh:mm[:ss]" |
| 130 | //usage: "\n YYYY-MM-DD hh:mm[:ss]" |
| 131 | //usage: "\n [[[[[YY]YY]MM]DD]hh]mm[.ss]" |
| 132 | //usage: |
| 133 | //usage:#define date_example_usage |
| 134 | //usage: "$ date\n" |
| 135 | //usage: "Wed Apr 12 18:52:41 MDT 2000\n" |
Denys Vlasenko | e4070cb | 2010-06-04 19:59:49 +0200 | [diff] [blame] | 136 | |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 137 | #include "libbb.h" |
Denys Vlasenko | 4ebdae3 | 2010-06-18 02:55:48 +0200 | [diff] [blame] | 138 | #if ENABLE_FEATURE_DATE_NANO |
| 139 | # include <sys/syscall.h> |
| 140 | #endif |
Rob Landley | 91ed1a4 | 2006-07-14 17:59:36 +0000 | [diff] [blame] | 141 | |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 142 | enum { |
| 143 | OPT_RFC2822 = (1 << 0), /* R */ |
| 144 | OPT_SET = (1 << 1), /* s */ |
| 145 | OPT_UTC = (1 << 2), /* u */ |
| 146 | OPT_DATE = (1 << 3), /* d */ |
| 147 | OPT_REFERENCE = (1 << 4), /* r */ |
| 148 | OPT_TIMESPEC = (1 << 5) * ENABLE_FEATURE_DATE_ISOFMT, /* I */ |
| 149 | OPT_HINT = (1 << 6) * ENABLE_FEATURE_DATE_ISOFMT, /* D */ |
| 150 | }; |
Rob Landley | 91ed1a4 | 2006-07-14 17:59:36 +0000 | [diff] [blame] | 151 | |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 152 | static void maybe_set_utc(int opt) |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 153 | { |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 154 | if (opt & OPT_UTC) |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 155 | putenv((char*)"TZ=UTC0"); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 156 | } |
| 157 | |
Bernhard Reutner-Fischer | ca22cda | 2009-10-23 15:44:51 +0200 | [diff] [blame] | 158 | #if ENABLE_LONG_OPTS |
| 159 | static const char date_longopts[] ALIGN1 = |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 160 | "rfc-822\0" No_argument "R" |
| 161 | "rfc-2822\0" No_argument "R" |
| 162 | "set\0" Required_argument "s" |
| 163 | "utc\0" No_argument "u" |
| 164 | /* "universal\0" No_argument "u" */ |
| 165 | "date\0" Required_argument "d" |
Bernhard Reutner-Fischer | ca22cda | 2009-10-23 15:44:51 +0200 | [diff] [blame] | 166 | "reference\0" Required_argument "r" |
| 167 | ; |
| 168 | #endif |
| 169 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 170 | int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 171 | int date_main(int argc UNUSED_PARAM, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 172 | { |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 173 | struct timespec ts; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 174 | struct tm tm_time; |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 175 | char buf_fmt_dt2str[64]; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 176 | unsigned opt; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 177 | int ifmt = -1; |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 178 | char *date_str; |
| 179 | char *fmt_dt2str; |
| 180 | char *fmt_str2dt; |
| 181 | char *filename; |
| 182 | char *isofmt_arg = NULL; |
Glenn L McGrath | 03195fc | 2002-08-23 05:58:38 +0000 | [diff] [blame] | 183 | |
Denis Vlasenko | 0919657 | 2007-07-21 13:27:44 +0000 | [diff] [blame] | 184 | opt_complementary = "d--s:s--d" |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 185 | IF_FEATURE_DATE_ISOFMT(":R--I:I--R"); |
Bernhard Reutner-Fischer | ca22cda | 2009-10-23 15:44:51 +0200 | [diff] [blame] | 186 | IF_LONG_OPTS(applet_long_options = date_longopts;) |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 187 | opt = getopt32(argv, "Rs:ud:r:" |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 188 | IF_FEATURE_DATE_ISOFMT("I::D:"), |
Denis Vlasenko | 35a4bbe | 2006-12-13 00:35:21 +0000 | [diff] [blame] | 189 | &date_str, &date_str, &filename |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 190 | IF_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt)); |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 191 | argv += optind; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 192 | maybe_set_utc(opt); |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 193 | |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 194 | if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_TIMESPEC)) { |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 195 | ifmt = 0; /* default is date */ |
| 196 | if (isofmt_arg) { |
| 197 | static const char isoformats[] ALIGN1 = |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 198 | "date\0""hours\0""minutes\0""seconds\0"; /* ns? */ |
| 199 | ifmt = index_in_substrings(isoformats, isofmt_arg); |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 200 | if (ifmt < 0) |
| 201 | bb_show_usage(); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 202 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 203 | } |
Robert Griebl | df03932 | 2002-07-30 23:11:00 +0000 | [diff] [blame] | 204 | |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 205 | fmt_dt2str = NULL; |
| 206 | if (argv[0] && argv[0][0] == '+') { |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 207 | fmt_dt2str = &argv[0][1]; /* skip over the '+' */ |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 208 | argv++; |
| 209 | } |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 210 | if (!(opt & (OPT_SET | OPT_DATE))) { |
| 211 | opt |= OPT_SET; |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 212 | date_str = argv[0]; /* can be NULL */ |
Denys Vlasenko | ff1822a | 2009-11-15 04:55:40 +0100 | [diff] [blame] | 213 | if (date_str) { |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 214 | #if ENABLE_FEATURE_DATE_COMPAT |
Denys Vlasenko | ff1822a | 2009-11-15 04:55:40 +0100 | [diff] [blame] | 215 | int len = strspn(date_str, "0123456789"); |
| 216 | if (date_str[len] == '\0' |
| 217 | || (date_str[len] == '.' |
| 218 | && isdigit(date_str[len+1]) |
| 219 | && isdigit(date_str[len+2]) |
| 220 | && date_str[len+3] == '\0' |
| 221 | ) |
| 222 | ) { |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 223 | /* Dreaded MMDDhhmm[[CC]YY][.ss] format! |
Denys Vlasenko | ff1822a | 2009-11-15 04:55:40 +0100 | [diff] [blame] | 224 | * It does not match -d or -s format. |
| 225 | * Some users actually do use it. |
| 226 | */ |
| 227 | len -= 8; |
| 228 | if (len < 0 || len > 4 || (len & 1)) |
| 229 | bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
| 230 | if (len != 0) { /* move YY or CCYY to front */ |
| 231 | char buf[4]; |
| 232 | memcpy(buf, date_str + 8, len); |
| 233 | memmove(date_str + len, date_str, 8); |
| 234 | memcpy(date_str, buf, len); |
| 235 | } |
| 236 | } |
| 237 | #endif |
Denis Vlasenko | e4ed640 | 2008-04-28 00:25:22 +0000 | [diff] [blame] | 238 | argv++; |
Denys Vlasenko | ff1822a | 2009-11-15 04:55:40 +0100 | [diff] [blame] | 239 | } |
Eric Andersen | add09fd | 2000-07-14 18:39:08 +0000 | [diff] [blame] | 240 | } |
Denis Vlasenko | e4ed640 | 2008-04-28 00:25:22 +0000 | [diff] [blame] | 241 | if (*argv) |
| 242 | bb_show_usage(); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 243 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 244 | /* Now we have parsed all the information except the date format |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 245 | * which depends on whether the clock is being set or read */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 246 | |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 247 | if (opt & OPT_REFERENCE) { |
Glenn L McGrath | 01cdb66 | 2004-02-17 12:22:21 +0000 | [diff] [blame] | 248 | struct stat statbuf; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 249 | xstat(filename, &statbuf); |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 250 | ts.tv_sec = statbuf.st_mtime; |
| 251 | #if ENABLE_FEATURE_DATE_NANO |
Denys Vlasenko | f2da16f | 2010-06-06 17:53:48 +0200 | [diff] [blame] | 252 | ts.tv_nsec = statbuf.st_mtim.tv_nsec; |
Denys Vlasenko | d1e4665 | 2010-12-30 23:56:47 +0100 | [diff] [blame] | 253 | /* Some toolchains use .st_mtimensec instead of st_mtim.tv_nsec. |
Denys Vlasenko | 0cd4f30 | 2010-12-31 00:01:59 +0100 | [diff] [blame^] | 254 | * If you need #define _SVID_SOURCE 1 to enable st_mtim.tv_nsec, |
Denys Vlasenko | d1e4665 | 2010-12-30 23:56:47 +0100 | [diff] [blame] | 255 | * drop a mail to project mailing list please |
| 256 | */ |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 257 | #endif |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 258 | } else { |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 259 | #if ENABLE_FEATURE_DATE_NANO |
Denys Vlasenko | 4ebdae3 | 2010-06-18 02:55:48 +0200 | [diff] [blame] | 260 | /* libc has incredibly messy way of doing this, |
| 261 | * typically requiring -lrt. We just skip all this mess */ |
| 262 | syscall(__NR_clock_gettime, CLOCK_REALTIME, &ts); |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 263 | #else |
Denys Vlasenko | e2b41cf | 2010-06-12 03:32:22 +0200 | [diff] [blame] | 264 | time(&ts.tv_sec); |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 265 | #endif |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 266 | } |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 267 | localtime_r(&ts.tv_sec, &tm_time); |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 268 | |
| 269 | /* If date string is given, update tm_time, and maybe set date */ |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 270 | if (date_str != NULL) { |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 271 | /* Zero out fields - take her back to midnight! */ |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 272 | tm_time.tm_sec = 0; |
| 273 | tm_time.tm_min = 0; |
| 274 | tm_time.tm_hour = 0; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 275 | |
Glenn L McGrath | 5f11541 | 2004-02-17 07:51:31 +0000 | [diff] [blame] | 276 | /* Process any date input to UNIX time since 1 Jan 1970 */ |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 277 | if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_HINT)) { |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 278 | if (strptime(date_str, fmt_str2dt, &tm_time) == NULL) |
| 279 | bb_error_msg_and_die(bb_msg_invalid_date, date_str); |
Denis Vlasenko | 4d89a8b | 2008-04-25 02:14:07 +0000 | [diff] [blame] | 280 | } else { |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 281 | parse_datestr(date_str, &tm_time); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 282 | } |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 283 | |
Eric Andersen | 77d9268 | 2001-05-23 20:32:09 +0000 | [diff] [blame] | 284 | /* Correct any day of week and day of year etc. fields */ |
Denys Vlasenko | fb132e4 | 2010-10-29 11:46:52 +0200 | [diff] [blame] | 285 | tm_time.tm_isdst = -1; /* Be sure to recheck dst */ |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 286 | ts.tv_sec = validate_tm_time(date_str, &tm_time); |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 287 | |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 288 | maybe_set_utc(opt); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 289 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 290 | /* if setting time, set it */ |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 291 | if ((opt & OPT_SET) && stime(&ts.tv_sec) < 0) { |
Denys Vlasenko | 6331cf0 | 2009-11-13 09:08:27 +0100 | [diff] [blame] | 292 | bb_perror_msg("can't set date"); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 293 | } |
| 294 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 295 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 296 | /* Display output */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 297 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 298 | /* Deal with format string */ |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 299 | if (fmt_dt2str == NULL) { |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 300 | int i; |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 301 | fmt_dt2str = buf_fmt_dt2str; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 302 | if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) { |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 303 | /* -I[SPEC]: 0:date 1:hours 2:minutes 3:seconds */ |
| 304 | strcpy(fmt_dt2str, "%Y-%m-%dT%H:%M:%S"); |
| 305 | i = 8 + 3 * ifmt; |
| 306 | if (ifmt != 0) { |
| 307 | /* TODO: if (ifmt==4) i += sprintf(&fmt_dt2str[i], ",%09u", nanoseconds); */ |
Denis Vlasenko | 240a1cf | 2007-04-08 16:07:02 +0000 | [diff] [blame] | 308 | format_utc: |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 309 | fmt_dt2str[i++] = '%'; |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 310 | fmt_dt2str[i++] = (opt & OPT_UTC) ? 'Z' : 'z'; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 311 | } |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 312 | fmt_dt2str[i] = '\0'; |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 313 | } else if (opt & OPT_RFC2822) { |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 314 | /* -R. undo busybox.c setlocale */ |
Denis Vlasenko | 6dc6ebb | 2007-01-01 23:53:12 +0000 | [diff] [blame] | 315 | if (ENABLE_LOCALE_SUPPORT) |
| 316 | setlocale(LC_TIME, "C"); |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 317 | strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S "); |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 318 | i = sizeof("%a, %d %b %Y %H:%M:%S ")-1; |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 319 | goto format_utc; |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 320 | } else { /* default case */ |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 321 | fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y"; |
Denys Vlasenko | 5da9f96 | 2010-01-23 23:37:52 +0100 | [diff] [blame] | 322 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 323 | } |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 324 | #if ENABLE_FEATURE_DATE_NANO |
| 325 | else { |
| 326 | /* User-specified fmt_dt2str */ |
| 327 | /* Search for and process "%N" */ |
| 328 | char *p = fmt_dt2str; |
| 329 | while ((p = strchr(p, '%')) != NULL) { |
| 330 | int n, m; |
| 331 | unsigned pres, scale; |
| 332 | |
| 333 | p++; |
| 334 | if (*p == '%') { |
| 335 | p++; |
| 336 | continue; |
| 337 | } |
| 338 | n = strspn(p, "0123456789"); |
| 339 | if (p[n] != 'N') { |
| 340 | p += n; |
| 341 | continue; |
| 342 | } |
| 343 | /* We have "%[nnn]N" */ |
| 344 | p[-1] = '\0'; |
| 345 | p[n] = '\0'; |
| 346 | scale = 1; |
| 347 | pres = 9; |
| 348 | if (n) { |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 349 | pres = xatoi_positive(p); |
Denys Vlasenko | 6c2406a | 2010-06-04 18:19:15 +0200 | [diff] [blame] | 350 | if (pres == 0) |
| 351 | pres = 9; |
| 352 | m = 9 - pres; |
| 353 | while (--m >= 0) |
| 354 | scale *= 10; |
| 355 | } |
| 356 | |
| 357 | m = p - fmt_dt2str; |
| 358 | p += n + 1; |
| 359 | fmt_dt2str = xasprintf("%s%0*u%s", fmt_dt2str, pres, (unsigned)ts.tv_nsec / scale, p); |
| 360 | p = fmt_dt2str + m; |
| 361 | } |
| 362 | } |
| 363 | #endif |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 364 | |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 365 | #define date_buf bb_common_bufsiz1 |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 366 | if (*fmt_dt2str == '\0') { |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 367 | /* With no format string, just print a blank line */ |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 368 | date_buf[0] = '\0'; |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 369 | } else { |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 370 | /* Handle special conversions */ |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 371 | if (strncmp(fmt_dt2str, "%f", 2) == 0) { |
| 372 | fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S"; |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 373 | } |
Rob Landley | c5789a6 | 2006-02-21 05:06:42 +0000 | [diff] [blame] | 374 | /* Generate output string */ |
Denis Vlasenko | 9ce4ae8 | 2008-03-25 02:43:34 +0000 | [diff] [blame] | 375 | strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time); |
Rob Landley | f7662da | 2005-05-28 23:55:26 +0000 | [diff] [blame] | 376 | } |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 377 | puts(date_buf); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 378 | |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 379 | return EXIT_SUCCESS; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 380 | } |