diff --git a/bin/date/date.c b/bin/date/date.c
index 62703c6d70ac..6b6e1f69cabc 100644
--- a/bin/date/date.c
+++ b/bin/date/date.c
@@ -1,477 +1,479 @@
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1985, 1987, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char const copyright[] =
"@(#) Copyright (c) 1985, 1987, 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#if 0
#ifndef lint
static char sccsid[] = "@(#)date.c 8.2 (Berkeley) 4/28/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <locale.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <utmpx.h>
#include "vary.h"
#ifndef TM_YEAR_BASE
#define TM_YEAR_BASE 1900
#endif
static void badformat(void);
static void iso8601_usage(const char *) __dead2;
static void multipleformats(void);
static void printdate(const char *);
static void printisodate(struct tm *, long);
static void setthetime(const char *, const char *, int, struct timespec *);
static size_t strftime_ns(char * __restrict, size_t, const char * __restrict,
const struct tm * __restrict, long);
static void usage(void) __dead2;
static const struct iso8601_fmt {
const char *refname;
const char *format_string;
} iso8601_fmts[] = {
{ "date", "%Y-%m-%d" },
{ "hours", "T%H" },
{ "minutes", ":%M" },
{ "seconds", ":%S" },
{ "ns", ",%N" },
};
static const struct iso8601_fmt *iso8601_selected;
static const char *rfc2822_format = "%a, %d %b %Y %T %z";
int
main(int argc, char *argv[])
{
struct timespec ts;
int ch, rflag;
bool Iflag, jflag, Rflag;
const char *format;
char buf[1024];
char *fmt, *outzone = NULL;
char *tmp;
struct vary *v;
const struct vary *badv;
struct tm *lt;
struct stat sb;
size_t i;
v = NULL;
fmt = NULL;
(void) setlocale(LC_TIME, "");
rflag = 0;
Iflag = jflag = Rflag = 0;
ts.tv_sec = 0;
ts.tv_nsec = 0;
while ((ch = getopt(argc, argv, "f:I::jnRr:uv:z:")) != -1)
switch((char)ch) {
case 'f':
fmt = optarg;
break;
case 'I':
if (Rflag)
multipleformats();
Iflag = 1;
if (optarg == NULL) {
iso8601_selected = iso8601_fmts;
break;
}
for (i = 0; i < nitems(iso8601_fmts); i++)
if (strcmp(optarg, iso8601_fmts[i].refname) == 0)
break;
if (i == nitems(iso8601_fmts))
iso8601_usage(optarg);
iso8601_selected = &iso8601_fmts[i];
break;
case 'j':
jflag = 1; /* don't set time */
break;
case 'n':
break;
case 'R': /* RFC 2822 datetime format */
if (Iflag)
multipleformats();
Rflag = 1;
break;
case 'r': /* user specified seconds */
rflag = 1;
ts.tv_sec = strtoq(optarg, &tmp, 0);
if (*tmp != 0) {
if (stat(optarg, &sb) == 0) {
ts.tv_sec = sb.st_mtim.tv_sec;
ts.tv_nsec = sb.st_mtim.tv_nsec;
} else
usage();
}
break;
case 'u': /* do everything in UTC */
(void)setenv("TZ", "UTC0", 1);
break;
case 'z':
outzone = optarg;
break;
case 'v':
v = vary_append(v, optarg);
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (!rflag && clock_gettime(CLOCK_REALTIME, &ts) == -1)
err(1, "clock_gettime");
format = "%+";
if (Rflag)
format = rfc2822_format;
/* allow the operands in any order */
if (*argv && **argv == '+') {
if (Iflag)
multipleformats();
format = *argv + 1;
++argv;
}
if (*argv) {
setthetime(fmt, *argv, jflag, &ts);
++argv;
} else if (fmt != NULL)
usage();
if (*argv && **argv == '+') {
if (Iflag)
multipleformats();
format = *argv + 1;
}
if (outzone != NULL && setenv("TZ", outzone, 1) != 0)
err(1, "setenv(TZ)");
lt = localtime(&ts.tv_sec);
if (lt == NULL)
errx(1, "invalid time");
badv = vary_apply(v, lt);
if (badv) {
fprintf(stderr, "%s: Cannot apply date adjustment\n",
badv->arg);
vary_destroy(v);
usage();
}
vary_destroy(v);
if (Iflag)
printisodate(lt, ts.tv_nsec);
if (format == rfc2822_format)
/*
* When using RFC 2822 datetime format, don't honor the
* locale.
*/
setlocale(LC_TIME, "C");
(void)strftime_ns(buf, sizeof(buf), format, lt, ts.tv_nsec);
printdate(buf);
}
static void
printdate(const char *buf)
{
(void)printf("%s\n", buf);
if (fflush(stdout))
err(1, "stdout");
exit(EXIT_SUCCESS);
}
static void
printisodate(struct tm *lt, long nsec)
{
const struct iso8601_fmt *it;
char fmtbuf[64], buf[64], tzbuf[8];
fmtbuf[0] = 0;
for (it = iso8601_fmts; it <= iso8601_selected; it++)
strlcat(fmtbuf, it->format_string, sizeof(fmtbuf));
(void)strftime_ns(buf, sizeof(buf), fmtbuf, lt, nsec);
if (iso8601_selected > iso8601_fmts) {
(void)strftime_ns(tzbuf, sizeof(tzbuf), "%z", lt, nsec);
memmove(&tzbuf[4], &tzbuf[3], 3);
tzbuf[3] = ':';
strlcat(buf, tzbuf, sizeof(buf));
}
printdate(buf);
}
#define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0'))
static void
setthetime(const char *fmt, const char *p, int jflag, struct timespec *ts)
{
struct utmpx utx;
struct tm *lt;
const char *dot, *t;
int century;
lt = localtime(&ts->tv_sec);
if (lt == NULL)
errx(1, "invalid time");
lt->tm_isdst = -1; /* divine correct DST */
if (fmt != NULL) {
t = strptime(p, fmt, lt);
if (t == NULL) {
fprintf(stderr, "Failed conversion of ``%s''"
" using format ``%s''\n", p, fmt);
badformat();
} else if (*t != '\0')
fprintf(stderr, "Warning: Ignoring %ld extraneous"
" characters in date string (%s)\n",
(long) strlen(t), t);
} else {
for (t = p, dot = NULL; *t; ++t) {
if (isdigit(*t))
continue;
if (*t == '.' && dot == NULL) {
dot = t;
continue;
}
badformat();
}
if (dot != NULL) { /* .ss */
dot++; /* *dot++ = '\0'; */
if (strlen(dot) != 2)
badformat();
lt->tm_sec = ATOI2(dot);
if (lt->tm_sec > 61)
badformat();
} else
lt->tm_sec = 0;
century = 0;
/* if p has a ".ss" field then let's pretend it's not there */
switch (strlen(p) - ((dot != NULL) ? 3 : 0)) {
case 12: /* cc */
lt->tm_year = ATOI2(p) * 100 - TM_YEAR_BASE;
century = 1;
/* FALLTHROUGH */
case 10: /* yy */
if (century)
lt->tm_year += ATOI2(p);
else {
lt->tm_year = ATOI2(p);
if (lt->tm_year < 69) /* hack for 2000 ;-} */
lt->tm_year += 2000 - TM_YEAR_BASE;
else
lt->tm_year += 1900 - TM_YEAR_BASE;
}
/* FALLTHROUGH */
case 8: /* mm */
lt->tm_mon = ATOI2(p);
if (lt->tm_mon > 12)
badformat();
--lt->tm_mon; /* time struct is 0 - 11 */
/* FALLTHROUGH */
case 6: /* dd */
lt->tm_mday = ATOI2(p);
if (lt->tm_mday > 31)
badformat();
/* FALLTHROUGH */
case 4: /* HH */
lt->tm_hour = ATOI2(p);
if (lt->tm_hour > 23)
badformat();
/* FALLTHROUGH */
case 2: /* MM */
lt->tm_min = ATOI2(p);
if (lt->tm_min > 59)
badformat();
break;
default:
badformat();
}
}
/* convert broken-down time to GMT clock time */
- if ((ts->tv_sec = mktime(lt)) == -1)
+ lt->tm_yday = -1;
+ ts->tv_sec = mktime(lt);
+ if (lt->tm_yday == -1)
errx(1, "nonexistent time");
ts->tv_nsec = 0;
if (!jflag) {
utx.ut_type = OLD_TIME;
memset(utx.ut_id, 0, sizeof(utx.ut_id));
(void)gettimeofday(&utx.ut_tv, NULL);
pututxline(&utx);
if (clock_settime(CLOCK_REALTIME, ts) != 0)
err(1, "clock_settime");
utx.ut_type = NEW_TIME;
(void)gettimeofday(&utx.ut_tv, NULL);
pututxline(&utx);
if ((p = getlogin()) == NULL)
p = "???";
syslog(LOG_AUTH | LOG_NOTICE, "date set by %s", p);
}
}
/*
* The strftime_ns function is a wrapper around strftime(3), which adds support
* for features absent from strftime(3). Currently, the only extra feature is
* support for %N, the nanosecond conversion specification.
*
* The functions scans the format string for the non-standard conversion
* specifications and replaces them with the date and time values before
* passing the format string to strftime(3). The handling of the non-standard
* conversion specifications happens before the call to strftime(3) to handle
* cases like "%%N" correctly ("%%N" should yield "%N" instead of nanoseconds).
*/
static size_t
strftime_ns(char * __restrict s, size_t maxsize, const char * __restrict format,
const struct tm * __restrict t, long nsec)
{
size_t prefixlen;
size_t ret;
char *newformat;
char *oldformat;
const char *prefix;
const char *suffix;
const char *tok;
bool seen_percent;
seen_percent = false;
if (asprintf(&newformat, "%s", format) < 0)
err(1, "asprintf");
tok = newformat;
for (tok = newformat; *tok != '\0'; tok++) {
switch (*tok) {
case '%':
/*
* If the previous token was a percent sign,
* then there are two percent tokens in a row.
*/
if (seen_percent)
seen_percent = false;
else
seen_percent = true;
break;
case 'N':
if (seen_percent) {
oldformat = newformat;
prefix = oldformat;
prefixlen = tok - oldformat - 1;
suffix = tok + 1;
/*
* Construct a new format string from the
* prefix (i.e., the part of the old fromat
* from its beginning to the currently handled
* "%N" conversion specification, the
* nanoseconds, and the suffix (i.e., the part
* of the old format from the next token to the
* end).
*/
if (asprintf(&newformat, "%.*s%.9ld%s",
(int)prefixlen, prefix, nsec,
suffix) < 0) {
err(1, "asprintf");
}
free(oldformat);
tok = newformat + prefixlen + 9;
}
seen_percent = false;
break;
default:
seen_percent = false;
break;
}
}
ret = strftime(s, maxsize, newformat, t);
free(newformat);
return (ret);
}
static void
badformat(void)
{
warnx("illegal time format");
usage();
}
static void
iso8601_usage(const char *badarg)
{
errx(1, "invalid argument '%s' for -I", badarg);
}
static void
multipleformats(void)
{
errx(1, "multiple output formats specified");
}
static void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n%s\n",
"usage: date [-jnRu] [-I[date|hours|minutes|seconds|ns]] [-f input_fmt]",
" "
"[ -z output_zone ] [-r filename|seconds] [-v[+|-]val[y|m|w|d|H|M|S]]",
" "
"[[[[[[cc]yy]mm]dd]HH]MM[.SS] | new_date] [+output_fmt]"
);
exit(1);
}