calendar.c revision 59945
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 * $FreeBSD: head/usr.bin/calendar/calendar.c 59945 2000-05-04 11:28:55Z phantom $ 34 */ 35 36#ifndef lint 37static const char copyright[] = 38"@(#) Copyright (c) 1989, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40#endif /* not lint */ 41 42#ifndef lint 43static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; 44#endif /* not lint */ 45 46#include <err.h> 47#include <errno.h> 48#include <locale.h> 49#include <pwd.h> 50#include <stdio.h> 51#include <stdlib.h> 52#include <time.h> 53#include <unistd.h> 54 55#include "pathnames.h" 56#include "calendar.h" 57 58struct passwd *pw; 59int doall = 0; 60time_t f_time = 0; 61 62int f_dayAfter = 0; /* days after current date */ 63int f_dayBefore = 0; /* days before current date */ 64 65int 66main(argc, argv) 67 int argc; 68 char *argv[]; 69{ 70 extern int optind; 71 int ch; 72 73 (void) setlocale(LC_ALL, ""); 74 75 while ((ch = getopt(argc, argv, "-af:t:A:B:")) != -1) 76 switch (ch) { 77 case '-': /* backward contemptible */ 78 case 'a': 79 if (getuid()) { 80 errno = EPERM; 81 err(1, NULL); 82 } 83 doall = 1; 84 break; 85 86 87 case 'f': /* other calendar file */ 88 calendarFile = optarg; 89 break; 90 91 case 't': /* other date, undocumented, for tests */ 92 f_time = Mktime (optarg); 93 break; 94 95 case 'A': /* days after current date */ 96 f_dayAfter = atoi(optarg); 97 break; 98 99 case 'B': /* days before current date */ 100 f_dayBefore = atoi(optarg); 101 break; 102 103 case '?': 104 default: 105 usage(); 106 } 107 argc -= optind; 108 argv += optind; 109 110 if (argc) 111 usage(); 112 113 /* use current time */ 114 if (f_time <= 0) 115 (void)time(&f_time); 116 117 settime(f_time); 118 119 if (doall) 120 while ((pw = getpwent()) != NULL) { 121 (void)setegid(pw->pw_gid); 122 (void)initgroups(pw->pw_name, pw->pw_gid); 123 (void)seteuid(pw->pw_uid); 124 if (!chdir(pw->pw_dir)) 125 cal(); 126 (void)seteuid(0); 127 } 128 else 129 cal(); 130 exit(0); 131} 132 133 134void 135usage() 136{ 137 (void)fprintf(stderr, 138 "usage: calendar [-a] [-A days] [-B days] [-f calendarfile]\n"); 139 exit(1); 140} 141 142 143