diff options
Diffstat (limited to 'usr.bin/calendar/calendar.c')
| -rw-r--r-- | usr.bin/calendar/calendar.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/usr.bin/calendar/calendar.c b/usr.bin/calendar/calendar.c new file mode 100644 index 0000000..bd03e02 --- /dev/null +++ b/usr.bin/calendar/calendar.c @@ -0,0 +1,228 @@ +/*- + * Copyright (c) 1989, 1993, 1994 + * 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. + * 4. 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 const char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; +#endif +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <err.h> +#include <errno.h> +#include <locale.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +#include "calendar.h" + +#define UTCOFFSET_NOTSET 100 /* Expected between -24 and +24 */ +#define LONGITUDE_NOTSET 1000 /* Expected between -360 and +360 */ + +struct passwd *pw; +int doall = 0; +int debug = 0; +char *DEBUG = NULL; +time_t f_time = 0; +double UTCOffset = UTCOFFSET_NOTSET; +int EastLongitude = LONGITUDE_NOTSET; + +static void usage(void) __dead2; + +int +main(int argc, char *argv[]) +{ + int f_dayAfter = 0; /* days after current date */ + int f_dayBefore = 0; /* days before current date */ + int Friday = 5; /* day before weekend */ + + int ch; + struct tm tp1, tp2; + + (void)setlocale(LC_ALL, ""); + + while ((ch = getopt(argc, argv, "-A:aB:D:dF:f:l:t:U:W:?")) != -1) + switch (ch) { + case '-': /* backward contemptible */ + case 'a': + if (getuid()) { + errno = EPERM; + err(1, NULL); + } + doall = 1; + break; + + case 'W': /* we don't need no steenking Fridays */ + Friday = -1; + /* FALLTHROUGH */ + + case 'A': /* days after current date */ + f_dayAfter = atoi(optarg); + break; + + case 'B': /* days before current date */ + f_dayBefore = atoi(optarg); + break; + + case 'D': /* debug output of sun and moon info */ + DEBUG = optarg; + break; + + case 'd': /* debug output of current date */ + debug = 1; + break; + + case 'F': /* Change the time: When does weekend start? */ + Friday = atoi(optarg); + break; + + case 'f': /* other calendar file */ + calendarFile = optarg; + break; + + case 'l': /* Change longitudal position */ + EastLongitude = strtol(optarg, NULL, 10); + break; + + case 't': /* other date, for tests */ + f_time = Mktime(optarg); + break; + + case 'U': /* Change UTC offset */ + UTCOffset = strtod(optarg, NULL); + break; + + case '?': + default: + usage(); + } + + argc -= optind; + argv += optind; + + if (argc) + usage(); + + /* use current time */ + if (f_time <= 0) + (void)time(&f_time); + + /* if not set, determine where I could be */ + { + if (UTCOffset == UTCOFFSET_NOTSET && + EastLongitude == LONGITUDE_NOTSET) { + /* Calculate on difference between here and UTC */ + time_t t; + struct tm tm; + long utcoffset, hh, mm, ss; + double uo; + + time(&t); + localtime_r(&t, &tm); + utcoffset = tm.tm_gmtoff; + /* seconds -> hh:mm:ss */ + hh = utcoffset / SECSPERHOUR; + utcoffset %= SECSPERHOUR; + mm = utcoffset / SECSPERMINUTE; + utcoffset %= SECSPERMINUTE; + ss = utcoffset; + + /* hh:mm:ss -> hh.mmss */ + uo = mm + (100.0 * (ss / 60.0)); + uo /= 60.0 / 100.0; + uo = hh + uo / 100; + + UTCOffset = uo; + EastLongitude = UTCOffset * 15; + } else if (UTCOffset == UTCOFFSET_NOTSET) { + /* Base on information given */ + UTCOffset = EastLongitude / 15; + } else if (EastLongitude == LONGITUDE_NOTSET) { + /* Base on information given */ + EastLongitude = UTCOffset * 15; + } + } + + settimes(f_time, f_dayBefore, f_dayAfter, Friday, &tp1, &tp2); + generatedates(&tp1, &tp2); + + /* + * FROM now on, we are working in UTC. + * This will only affect moon and sun related events anyway. + */ + if (setenv("TZ", "UTC", 1) != 0) + errx(1, "setenv: %s", strerror(errno)); + tzset(); + + if (debug) + dumpdates(); + + if (DEBUG != NULL) { + dodebug(DEBUG); + exit(0); + } + + if (doall) + while ((pw = getpwent()) != NULL) { + (void)setegid(pw->pw_gid); + (void)initgroups(pw->pw_name, pw->pw_gid); + (void)seteuid(pw->pw_uid); + if (!chdir(pw->pw_dir)) + cal(); + (void)seteuid(0); + } + else + cal(); + exit(0); +} + + +static void __dead2 +usage(void) +{ + + fprintf(stderr, "%s\n%s\n%s\n", + "usage: calendar [-A days] [-a] [-B days] [-D sun|moon] [-d]", + " [-F friday] [-f calendarfile] [-l longitude]", + " [-t dd[.mm[.year]]] [-U utcoffset] [-W days]" + ); + exit(1); +} |
