2 * Copyright (c) 1985, 1987, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static char const copyright[] =
36 "@(#) Copyright (c) 1985, 1987, 1988, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)date.c 8.2 (Berkeley) 4/28/95";
44 static const char rcsid[] =
45 "$FreeBSD: src/bin/date/date.c,v 1.32.2.6 2001/10/31 17:31:51 dillon Exp $";
48 #include <sys/param.h>
64 #define TM_YEAR_BASE 1900
70 static void setthetime __P((const char *, const char *, int, int));
71 static void badformat __P((void));
72 static void usage __P((void));
74 int logwtmp __P((char *, char *, char *));
84 char *format, buf[1024];
89 const struct vary *badv;
94 (void) setlocale(LC_TIME, "");
95 tz.tz_dsttime = tz.tz_minuteswest = 0;
99 while ((ch = getopt(argc, argv, "d:f:jnr:t:uv:")) != -1)
101 case 'd': /* daylight savings time */
102 tz.tz_dsttime = strtol(optarg, &endptr, 10) ? 1 : 0;
103 if (endptr == optarg || *endptr != '\0')
111 jflag = 1; /* don't set time */
113 case 'n': /* don't set network */
116 case 'r': /* user specified seconds */
118 tval = strtoq(optarg, &tmp, 0);
122 case 't': /* minutes west of UTC */
123 /* error check; don't allow "PST" */
124 tz.tz_minuteswest = strtol(optarg, &endptr, 10);
125 if (endptr == optarg || *endptr != '\0')
129 case 'u': /* do everything in UTC */
130 (void)setenv("TZ", "UTC0", 1);
133 v = vary_append(v, optarg);
142 * If -d or -t, set the timezone or daylight savings time; this
143 * doesn't belong here; the kernel should not know about either.
145 if (set_timezone && settimeofday((struct timeval *)NULL, &tz))
146 err(1, "settimeofday (timezone)");
148 if (!rflag && time(&tval) == -1)
153 /* allow the operands in any order */
154 if (*argv && **argv == '+') {
160 setthetime(fmt, *argv, jflag, nflag);
162 } else if (fmt != NULL)
165 if (*argv && **argv == '+')
168 lt = *localtime(&tval);
169 badv = vary_apply(v, <);
171 fprintf(stderr, "%s: Cannot apply date adjustment\n",
177 (void)strftime(buf, sizeof(buf), format, <);
178 (void)printf("%s\n", buf);
182 #define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0'))
185 setthetime(fmt, p, jflag, nflag)
187 register const char *p;
190 register struct tm *lt;
196 lt = localtime(&tval);
197 t = strptime(p, fmt, lt);
199 fprintf(stderr, "Failed conversion of ``%s''"
200 " using format ``%s''\n", p, fmt);
202 } else if (*t != '\0')
203 fprintf(stderr, "Warning: Ignoring %ld extraneous"
204 " characters in date string (%s)\n",
205 (long) strlen(t), t);
207 for (t = p, dot = NULL; *t; ++t) {
210 if (*t == '.' && dot == NULL) {
217 lt = localtime(&tval);
219 if (dot != NULL) { /* .ss */
220 dot++; /* *dot++ = '\0'; */
221 if (strlen(dot) != 2)
223 lt->tm_sec = ATOI2(dot);
230 /* if p has a ".ss" field then let's pretend it's not there */
231 switch (strlen(p) - ((dot != NULL) ? 3 : 0)) {
233 lt->tm_year = ATOI2(p) * 100 - TM_YEAR_BASE;
238 lt->tm_year += ATOI2(p);
239 else { /* hack for 2000 ;-} */
240 lt->tm_year = ATOI2(p);
241 if (lt->tm_year < 69)
242 lt->tm_year += 2000 - TM_YEAR_BASE;
244 lt->tm_year += 1900 - TM_YEAR_BASE;
248 lt->tm_mon = ATOI2(p);
251 --lt->tm_mon; /* time struct is 0 - 11 */
254 lt->tm_mday = ATOI2(p);
255 if (lt->tm_mday > 31)
259 lt->tm_hour = ATOI2(p);
260 if (lt->tm_hour > 23)
264 lt->tm_min = ATOI2(p);
273 /* Let mktime() decide whether summer time is in effect. */
276 /* convert broken-down time to GMT clock time */
277 if ((tval = mktime(lt)) == -1)
278 errx(1, "nonexistent time");
282 if (nflag || netsettime(tval)) {
283 logwtmp("|", "date", "");
286 if (settimeofday(&tv, (struct timezone *)NULL))
287 err(1, "settimeofday (timeval)");
288 logwtmp("{", "date", "");
291 if ((p = getlogin()) == NULL)
293 syslog(LOG_AUTH | LOG_NOTICE, "date set by %s", p);
300 warnx("illegal time format");
307 (void)fprintf(stderr, "%s\n%s\n",
308 "usage: date [-jnu] [-d dst] [-r seconds] [-t west] "
309 "[-v[+|-]val[ymwdHMS]] ... ",
311 "[-f fmt date | [[[[[cc]yy]mm]dd]HH]MM[.ss]] [+format]");