calendar.c revision 15714 
1/*
2 * Copyright (c) 1989, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1989, 1993\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static const char sccsid[] = "@(#)calendar.c  8.3 (Berkeley) 3/25/94";
42#endif /* not lint */
43
44#include <err.h>
45#include <errno.h>
46#include <locale.h>
47#include <pwd.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <time.h>
51#include <unistd.h>
52
53#include "pathnames.h"
54#include "calendar.h"
55
56struct passwd *pw;
57int doall = 0;
58time_t f_time = 0;
59
60int f_dayAfter = 0; /* days after current date */
61int f_dayBefore = 0; /* days before current date */
62
63int
64main(argc, argv)
65	int argc;
66	char *argv[];
67{
68	extern int optind;
69	int ch;
70
71	(void) setlocale(LC_ALL, "");
72
73	while ((ch = getopt(argc, argv, "?-af:t:A:B:")) != EOF)
74		switch (ch) {
75		case '-':		/* backward contemptible */
76		case 'a':
77			if (getuid()) {
78				errno = EPERM;
79				err(1, NULL);
80			}
81			doall = 1;
82			break;
83
84
85		case 'f': /* other calendar file */
86		        calendarFile = optarg;
87			break;
88
89		case 't': /* other date, undocumented, for tests */
90			f_time = Mktime (optarg);
91			break;
92
93		case 'A': /* days after current date */
94			f_dayAfter = atoi(optarg);
95			break;
96
97		case 'B': /* days before current date */
98			f_dayBefore = atoi(optarg);
99			break;
100
101		case '?':
102		default:
103			usage();
104		}
105	argc -= optind;
106	argv += optind;
107
108	if (argc)
109		usage();
110
111	/* use current time */
112	if (f_time <= 0)
113	    (void)time(&f_time);
114
115	settime(f_time);
116
117	if (doall)
118		while ((pw = getpwent()) != NULL) {
119			(void)setegid(pw->pw_gid);
120			(void)seteuid(pw->pw_uid);
121			if (!chdir(pw->pw_dir))
122				cal();
123			(void)seteuid(0);
124		}
125	else
126		cal();
127	exit(0);
128}
129
130
131void
132usage()
133{
134	(void)fprintf(stderr,
135		      "usage: calendar [-a] [-A days] [-B days] [-f calendarfile]\n");
136	exit(1);
137}
138
139
140