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 35 static const char copyright[] = 36 "@(#) Copyright (c) 1989, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; 43 #endif 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <err.h> 50 #include <errno.h> 51 #include <locale.h> 52 #include <pwd.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <time.h> 56 #include <unistd.h> 57 58 #include "calendar.h" 59 60 struct passwd *pw; 61 int doall = 0; 62 time_t f_time = 0; 63 64 int f_dayAfter = 0; /* days after current date */ 65 int f_dayBefore = 0; /* days before current date */ 66 int Friday = 5; /* day before weekend */ 67 68 static void usage(void) __dead2; 69 70 int 71 main(int argc, char *argv[]) 72 { 73 int ch; 74 75 (void)setlocale(LC_ALL, ""); 76 77 while ((ch = getopt(argc, argv, "-A:aB:F:f:t:W:")) != -1) 78 switch (ch) { 79 case '-': /* backward contemptible */ 80 case 'a': 81 if (getuid()) { 82 errno = EPERM; 83 err(1, NULL); 84 } 85 doall = 1; 86 break; 87 88 case 'f': /* other calendar file */ 89 calendarFile = optarg; 90 break; 91 92 case 't': /* other date, undocumented, for tests */ 93 f_time = Mktime(optarg); 94 break; 95 96 case 'W': /* we don't need no steenking Fridays */ 97 Friday = -1; 98 99 /* FALLTHROUGH */ 100 case 'A': /* days after current date */ 101 f_dayAfter = atoi(optarg); 102 break; 103 104 case 'B': /* days before current date */ 105 f_dayBefore = atoi(optarg); 106 break; 107 108 case 'F': 109 Friday = atoi(optarg); 110 break; 111 112 case '?': 113 default: 114 usage(); 115 } 116 117 argc -= optind; 118 argv += optind; 119 120 if (argc) 121 usage(); 122 123 /* use current time */ 124 if (f_time <= 0) 125 (void)time(&f_time); 126 127 settime(f_time); 128 129 if (doall) 130 while ((pw = getpwent()) != NULL) { 131 (void)setegid(pw->pw_gid); 132 (void)initgroups(pw->pw_name, pw->pw_gid); 133 (void)seteuid(pw->pw_uid); 134 if (!chdir(pw->pw_dir)) 135 cal(); 136 (void)seteuid(0); 137 } 138 else 139 cal(); 140 exit(0); 141 } 142 143 144 static void __dead2 145 usage(void) 146 { 147 148 fprintf(stderr, "%s\n%s\n", 149 "usage: calendar [-a] [-A days] [-B days] [-F friday] " 150 "[-f calendarfile]", 151 " [-t dd[.mm[.year]]] [-W days]"); 152 exit(1); 153 } 154