b20a21a6c1
-W is like -A (number of days in the future to consider, but also specifies that we don't want special treatment at weekends. -F changes our notion of "Friday" (the day before the weekend). Arguably, calendar(1) is broken to have special treatment of weekends by default, but this method maintains POLA.
155 lines
3.9 KiB
C
155 lines
3.9 KiB
C
/*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
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#endif
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <err.h>
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#include <errno.h>
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#include <locale.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include "pathnames.h"
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#include "calendar.h"
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struct passwd *pw;
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int doall = 0;
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time_t f_time = 0;
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int f_dayAfter = 0; /* days after current date */
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int f_dayBefore = 0; /* days before current date */
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int Friday = 5; /* day before weekend */
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch;
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(void) setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "-af:t:A:B:F:W:")) != -1)
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switch (ch) {
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case '-': /* backward contemptible */
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case 'a':
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if (getuid()) {
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errno = EPERM;
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err(1, NULL);
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}
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doall = 1;
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break;
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case 'f': /* other calendar file */
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calendarFile = optarg;
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break;
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case 't': /* other date, undocumented, for tests */
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f_time = Mktime (optarg);
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break;
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case 'W': /* we don't need no steenking Fridays */
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Friday = -1;
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/* FALLTHROUGH */
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case 'A': /* days after current date */
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f_dayAfter = atoi(optarg);
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break;
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case 'B': /* days before current date */
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f_dayBefore = atoi(optarg);
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break;
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case 'F':
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Friday = atoi(optarg);
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc)
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usage();
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/* use current time */
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if (f_time <= 0)
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(void)time(&f_time);
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settime(f_time);
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if (doall)
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while ((pw = getpwent()) != NULL) {
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(void)setegid(pw->pw_gid);
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(void)initgroups(pw->pw_name, pw->pw_gid);
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(void)seteuid(pw->pw_uid);
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if (!chdir(pw->pw_dir))
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cal();
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(void)seteuid(0);
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}
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else
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cal();
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exit(0);
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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"usage: calendar [-a] [-A days] [-W days] [-F friday] [-B days]\n"
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"\t[-f calendarfile] [-t dd[.mm[.year]]]\n");
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exit(1);
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}
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