File: [local] / src / usr.bin / calendar / calendar.c (download)
Revision 1.12, Sun Dec 13 07:31:07 1998 UTC (25 years, 6 months ago) by pjanzen
Branch: MAIN
CVS Tags: OPENBSD_2_7_BASE, OPENBSD_2_6_BASE, OPENBSD_2_6, OPENBSD_2_5_BASE, OPENBSD_2_5 Branch point for: OPENBSD_2_7
Changes since 1.11: +22 -7 lines
Show periodic events the correct number of times.
Calculate special events (Easter) correctly regardless of which year
they occur in (thus fixing user/562).
Keep locales and special event names from propogating from one user
to the next during "calendar -a".
Set up a framework to handle special events other than Easter (for instance,
Jewish events, eventually).
Various other fixes.
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/* $OpenBSD: calendar.c,v 1.12 1998/12/13 07:31:07 pjanzen Exp $ */
/*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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 /* not lint */
#ifndef lint
#if 0
static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
#else
static char rcsid[] = "$OpenBSD: calendar.c,v 1.12 1998/12/13 07:31:07 pjanzen Exp $";
#endif
#endif /* not lint */
#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 <tzfile.h>
#include <unistd.h>
#include "pathnames.h"
#include "calendar.h"
struct passwd *pw;
int doall = 0;
time_t f_time = 0;
int f_dayAfter = 0; /* days after current date */
int f_dayBefore = 0; /* days before current date */
struct specialev spev[NUMEV];
int
main(argc, argv)
int argc;
char *argv[];
{
int ch, i;
char *caldir;
(void)setlocale(LC_ALL, "");
while ((ch = getopt(argc, argv, "-af:t:A:B:")) != -1)
switch (ch) {
case '-': /* backward contemptible */
case 'a':
if (getuid())
errx(1, strerror(EPERM));
doall = 1;
break;
case 'f': /* other calendar file */
calendarFile = optarg;
break;
case 't': /* other date, undocumented, for tests */
if ((f_time = Mktime(optarg)) <= 0)
errx(1, "specified date is outside allowed range");
break;
case 'A': /* days after current date */
f_dayAfter = atoi(optarg);
break;
case 'B': /* days before current date */
f_dayBefore = atoi(optarg);
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc)
usage();
/* use current time */
if (f_time <= 0)
(void)time(&f_time);
if (f_dayBefore) {
/* Move back in time and only look forwards */
f_dayAfter += f_dayBefore;
f_time -= SECSPERDAY * f_dayBefore;
f_dayBefore = 0;
}
settime(&f_time);
if (doall) {
while ((pw = getpwent()) != NULL) {
(void)setlocale(LC_ALL, "");
(void)setegid(pw->pw_gid);
(void)initgroups(pw->pw_name, pw->pw_gid);
(void)seteuid(pw->pw_uid);
if (!chdir(pw->pw_dir)) {
cal();
/* Keep user settings from propogating */
for (i = 0; i < NUMEV; i++)
if (spev[i].uname != NULL)
free(spev[i].uname);
}
(void)seteuid(0);
}
}
else if ((caldir = getenv("CALENDAR_DIR")) != NULL) {
if(!chdir(caldir))
cal();
} else
cal();
exit(0);
}
void
usage()
{
(void)fprintf(stderr,
"usage: calendar [-a] [-A days] [-B days] [-f calendarfile] [-t [[[yy]yy][mm]]dd]\n");
exit(1);
}