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 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)calendar.c 8.3 (Berkeley) 3/25/94 35 * $FreeBSD: src/usr.bin/calendar/calendar.c,v 1.11.2.5 2003/04/06 20:04:56 dwmalone Exp $ 36 * $DragonFly: src/usr.bin/calendar/calendar.c,v 1.4 2006/09/16 18:38:00 pavalos Exp $ 37 */ 38 39 #include <err.h> 40 #include <errno.h> 41 #include <locale.h> 42 #include <pwd.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <sysexits.h> 46 #include <time.h> 47 #include <unistd.h> 48 49 #include "pathnames.h" 50 #include "calendar.h" 51 52 struct passwd *pw; 53 int doall = 0; 54 int f_dayAfter = 0; /* days after current date */ 55 int f_dayBefore = 0; /* days before current date */ 56 int Friday = 5; /* day before weekend */ 57 58 int 59 main(int argc, char **argv) 60 { 61 int ch; 62 time_t f_time = 0; 63 64 setlocale(LC_ALL, ""); 65 66 while ((ch = getopt(argc, argv, "-af:t:A:B:F:W:")) != -1) { 67 switch (ch) { 68 case '-': /* backward compatible */ 69 case 'a': 70 if (getuid()) { 71 errno = EPERM; 72 err(EXIT_FAILURE, NULL); 73 } 74 doall = 1; 75 break; 76 77 case 'f': /* other calendar file */ 78 calendarFile = optarg; 79 break; 80 81 case 't': /* other date, undocumented, for tests */ 82 f_time = Mktime(optarg); 83 break; 84 85 case 'W': /* we don't need no steenking Fridays */ 86 Friday = -1; 87 88 /* FALLTHROUGH */ 89 case 'A': /* days after current date */ 90 f_dayAfter = atoi(optarg); 91 break; 92 93 case 'B': /* days before current date */ 94 f_dayBefore = atoi(optarg); 95 break; 96 97 case 'F': 98 Friday = atoi(optarg); 99 break; 100 101 case '?': 102 default: 103 usage(); 104 } 105 } 106 argc -= optind; 107 argv += optind; 108 109 if (argc) 110 usage(); 111 112 /* use current time */ 113 if (f_time <= 0) 114 time(&f_time); 115 116 settime(f_time); 117 118 if (doall) 119 while ((pw = getpwent()) != NULL) { 120 setegid(pw->pw_gid); 121 initgroups(pw->pw_name, pw->pw_gid); 122 seteuid(pw->pw_uid); 123 if (!chdir(pw->pw_dir)) 124 cal(); 125 seteuid(0); 126 } 127 else 128 cal(); 129 exit(EX_OK); 130 } 131 132 133 void 134 usage(void) 135 { 136 fprintf(stderr, "%s\n%s\n", 137 "usage: calendar [-a] [-A days] [-B days] [-F friday] " 138 "[-f calendarfile]", 139 " [-t dd[.mm[.year]]] [-W days]"); 140 exit(EX_USAGE); 141 } 142