diff options
Diffstat (limited to 'package/toolbox/src/date/date.c')
| -rw-r--r-- | package/toolbox/src/date/date.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/package/toolbox/src/date/date.c b/package/toolbox/src/date/date.c new file mode 100644 index 000000000..c4d5ddc82 --- /dev/null +++ b/package/toolbox/src/date/date.c @@ -0,0 +1,272 @@ +/* $OpenBSD: date.c,v 1.26 2003/10/15 15:58:22 mpech Exp $ */ +/* $NetBSD: date.c,v 1.11 1995/09/07 06:21:05 jtc Exp $ */ + +/* + * 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. + */ + +#include <sys/param.h> +#include <sys/time.h> + +#include <ctype.h> +#include <err.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <locale.h> +#include <syslog.h> +#include <time.h> +#include <unistd.h> + +__COPYRIGHT("@(#) Copyright (c) 1985, 1987, 1988, 1993\n\ + The Regents of the University of California. All rights reserved.\n"); +__SCCSID("@(#)date.c 8.2 (Berkeley) 4/28/95"); +__RCSID("$MirOS: src/bin/date/date.c,v 1.9 2016/01/02 21:32:56 tg Exp $"); + +extern const char *__progname; + +time_t tval; +int retval; +int slidetime; + +#ifndef TM_YEAR_BASE +#define TM_YEAR_BASE 1900 +#endif + +static void setthetime(char *); +static __dead void badformat(void); +static __dead void usage(void); + +int +main(int argc, char *argv[]) +{ + struct timezone tz; + int ch, rflag; + const char *format = NULL; + char buf[1024]; + int whatformat = 0; + + tz.tz_dsttime = tz.tz_minuteswest = 0; + rflag = 0; + while ((ch = getopt(argc, argv, "ad:nRr:ut:")) != -1) + switch((char)ch) { + case 'a': + slidetime++; + break; + case 'd': /* daylight saving time */ + tz.tz_dsttime = atoi(optarg) ? 1 : 0; + break; + case 'n': /* don't set network */ + break; + case 'R': /* RFC 2822 format */ + whatformat |= 1; + break; + case 'r': /* user specified seconds */ + rflag = 1; + tval = atoll(optarg); + break; + case 'u': /* do everything in UTC */ + if (setenv("TZ", "GMT0", 1) == -1) + err(1, "cannot unsetenv TZ"); + break; + case 't': /* minutes west of GMT */ + /* error check; don't allow "PST" */ + if (isdigit(*optarg)) { + tz.tz_minuteswest = atoi(optarg); + break; + } + /* FALLTHROUGH */ + default: + usage(); + } + argc -= optind; + argv += optind; + + /* + * If -d or -t, set the timezone or daylight saving time; this + * doesn't belong here, the kernel should not know about either. + */ + if ((tz.tz_minuteswest || tz.tz_dsttime) && + settimeofday(NULL, &tz)) + err(1, "settimeofday"); + + if (!rflag && time(&tval) == -1) + err(1, "time"); + + /* allow the operands in any order */ + if (*argv && **argv == '+') { + if (*(*argv + 1)) { + whatformat |= 2; + format = *argv + 1; + } + ++argv; + } + + if (*argv) { + setthetime(*argv); + ++argv; + } + + if (*argv && **argv == '+') { + whatformat |= 4; + format = *argv + 1; + } + + if (whatformat == 0) + format = "%a %b %e %H:%M:%S %Z %Y"; + else if (whatformat == 1) { + format = "%a, %d %b %Y %H:%M:%S %z"; + } else if (whatformat != 2 && whatformat != 4) + errx(1, "more than one format specified"); + + strftime(buf, sizeof (buf), format, localtime(&tval)); + printf("%s\n", buf); + exit(retval); +} + +#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2; +void +setthetime(char *p) +{ + struct tm *lt; + struct timeval tv; + char *dot, *t; + const char *pc; + int bigyear; + int yearset = 0; + + for (t = p, dot = NULL; *t; ++t) { + if (isdigit(*t)) + continue; + if (*t == '.' && dot == NULL) { + dot = t; + continue; + } + badformat(); + } + + lt = localtime(&tval); + + lt->tm_isdst = -1; /* correct for DST */ + + if (dot != NULL) { /* .SS */ + *dot++ = '\0'; + if (strlen(dot) != 2) + badformat(); + lt->tm_sec = ATOI2(dot); + if (lt->tm_sec > 61) + badformat(); + } else + lt->tm_sec = 0; + + switch (strlen(p)) { + case 12: /* cc */ + bigyear = ATOI2(p); + lt->tm_year = bigyear * 100 - TM_YEAR_BASE; + yearset = 1; + /* FALLTHROUGH */ + case 10: /* yy */ + if (yearset) { + 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) || !lt->tm_mon) + badformat(); + --lt->tm_mon; /* time struct is 0 - 11 */ + /* FALLTHROUGH */ + case 6: /* dd */ + lt->tm_mday = ATOI2(p); + if ((lt->tm_mday > 31) || !lt->tm_mday) + 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 UTC clock time */ + if ((tval = mktime(lt)) < 0) + errx(1, "specified date is outside allowed range"); + + /* set the time */ + if (slidetime) { + struct timeval tv_current; + + if (gettimeofday(&tv_current, NULL) == -1) + err(1, "Could not get local time of day"); + + tv.tv_sec = tval - tv_current.tv_sec; + tv.tv_usec = 0; + if (adjtime(&tv, NULL) == -1) + errx(1, "adjtime"); + } else { + tv.tv_sec = tval; + tv.tv_usec = 0; + if (settimeofday(&tv, NULL)) + err(1, "settimeofday"); + } + + if ((pc = getlogin()) == NULL) + pc = "???"; + syslog(LOG_AUTH | LOG_NOTICE, "date set by %s", pc); +} + +static void +badformat(void) +{ + warnx("illegal time format"); + usage(); +} + +static void +usage(void) +{ + fprintf(stderr, + "usage:\t%s [-anRu] [-d dst] [-r seconds] [-t west] [+format]\n", + __progname); + fprintf(stderr, "\t [[[[[[cc]yy]mm]dd]HH]MM[.SS]]\n"); + exit(1); +} |