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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)calendar.c 8.3 (Berkeley) 3/25/94 31 * $FreeBSD: src/usr.bin/calendar/calendar.c,v 1.11.2.5 2003/04/06 20:04:56 dwmalone Exp $ 32 * $DragonFly: src/usr.bin/calendar/calendar.c,v 1.5 2007/09/24 20:49:09 pavalos Exp $ 33 */ 34 35 #include <err.h> 36 #include <errno.h> 37 #include <locale.h> 38 #include <pwd.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <sysexits.h> 42 #include <time.h> 43 #include <unistd.h> 44 45 #include "pathnames.h" 46 #include "calendar.h" 47 48 struct passwd *pw; 49 int doall = 0; 50 int f_dayAfter = 0; /* days after current date */ 51 int f_dayBefore = 0; /* days before current date */ 52 int Friday = 5; /* day before weekend */ 53 54 static void usage(void); 55 56 int 57 main(int argc, char **argv) 58 { 59 int ch; 60 time_t f_time = 0; 61 62 setlocale(LC_ALL, ""); 63 64 while ((ch = getopt(argc, argv, "-af:t:A:B:F:W:")) != -1) { 65 switch (ch) { 66 case '-': /* backward compatible */ 67 case 'a': 68 if (getuid()) { 69 errno = EPERM; 70 err(EXIT_FAILURE, NULL); 71 } 72 doall = 1; 73 break; 74 75 case 'f': /* other calendar file */ 76 calendarFile = optarg; 77 break; 78 79 case 't': /* other date, undocumented, for tests */ 80 f_time = Mktime(optarg); 81 break; 82 83 case 'W': /* we don't need no steenking Fridays */ 84 Friday = -1; 85 86 /* FALLTHROUGH */ 87 case 'A': /* days after current date */ 88 f_dayAfter = atoi(optarg); 89 break; 90 91 case 'B': /* days before current date */ 92 f_dayBefore = atoi(optarg); 93 break; 94 95 case 'F': 96 Friday = atoi(optarg); 97 break; 98 99 case '?': 100 default: 101 usage(); 102 } 103 } 104 argc -= optind; 105 argv += optind; 106 107 if (argc) 108 usage(); 109 110 /* use current time */ 111 if (f_time <= 0) 112 time(&f_time); 113 114 settime(f_time); 115 116 if (doall) 117 while ((pw = getpwent()) != NULL) { 118 setegid(pw->pw_gid); 119 initgroups(pw->pw_name, pw->pw_gid); 120 seteuid(pw->pw_uid); 121 if (!chdir(pw->pw_dir)) 122 cal(); 123 seteuid(0); 124 } 125 else 126 cal(); 127 exit(EX_OK); 128 } 129 130 131 static void 132 usage(void) 133 { 134 fprintf(stderr, "%s\n%s\n", 135 "usage: calendar [-a] [-A days] [-B days] [-F friday] " 136 "[-f calendarfile]", 137 " [-t dd[.mm[.year]]] [-W days]"); 138 exit(EX_USAGE); 139 } 140