calendar.c revision 205872
10Sstevel@tonic-gate/*- 20Sstevel@tonic-gate * Copyright (c) 1989, 1993, 1994 30Sstevel@tonic-gate * The Regents of the University of California. All rights reserved. 40Sstevel@tonic-gate * 50Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 60Sstevel@tonic-gate * modification, are permitted provided that the following conditions 70Sstevel@tonic-gate * are met: 80Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 90Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 100Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 110Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 120Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 130Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors 140Sstevel@tonic-gate * may be used to endorse or promote products derived from this software 150Sstevel@tonic-gate * without specific prior written permission. 160Sstevel@tonic-gate * 170Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 180Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 190Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 200Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 210Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 220Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 230Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 240Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 250Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 260Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 270Sstevel@tonic-gate * SUCH DAMAGE. 280Sstevel@tonic-gate */ 290Sstevel@tonic-gate 300Sstevel@tonic-gate#ifndef lint 310Sstevel@tonic-gatestatic const char copyright[] = 320Sstevel@tonic-gate"@(#) Copyright (c) 1989, 1993\n\ 330Sstevel@tonic-gate The Regents of the University of California. All rights reserved.\n"; 340Sstevel@tonic-gate#endif 350Sstevel@tonic-gate 360Sstevel@tonic-gate#if 0 370Sstevel@tonic-gate#ifndef lint 380Sstevel@tonic-gatestatic char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; 390Sstevel@tonic-gate#endif 400Sstevel@tonic-gate#endif 410Sstevel@tonic-gate 420Sstevel@tonic-gate#include <sys/cdefs.h> 430Sstevel@tonic-gate__FBSDID("$FreeBSD: head/usr.bin/calendar/calendar.c 205872 2010-03-30 06:42:01Z edwin $"); 440Sstevel@tonic-gate 450Sstevel@tonic-gate#include <err.h> 460Sstevel@tonic-gate#include <errno.h> 470Sstevel@tonic-gate#include <locale.h> 480Sstevel@tonic-gate#include <pwd.h> 490Sstevel@tonic-gate#include <stdio.h> 500Sstevel@tonic-gate#include <stdlib.h> 510Sstevel@tonic-gate#include <string.h> 520Sstevel@tonic-gate#include <time.h> 530Sstevel@tonic-gate#include <unistd.h> 540Sstevel@tonic-gate 550Sstevel@tonic-gate#include "calendar.h" 560Sstevel@tonic-gate 570Sstevel@tonic-gate#define UTCOFFSET_NOTSET 100 /* Expected between -24 and +24 */ 580Sstevel@tonic-gate#define LONGITUDE_NOTSET 1000 /* Expected between -360 and +360 */ 590Sstevel@tonic-gate 600Sstevel@tonic-gatestruct passwd *pw; 610Sstevel@tonic-gateint doall = 0; 620Sstevel@tonic-gateint debug = 0; 630Sstevel@tonic-gatechar *DEBUG = NULL; 640Sstevel@tonic-gatetime_t f_time = 0; 650Sstevel@tonic-gatedouble UTCOffset = UTCOFFSET_NOTSET; 660Sstevel@tonic-gateint EastLongitude = LONGITUDE_NOTSET; 670Sstevel@tonic-gate 680Sstevel@tonic-gatestatic void usage(void) __dead2; 690Sstevel@tonic-gate 700Sstevel@tonic-gateint 710Sstevel@tonic-gatemain(int argc, char *argv[]) 720Sstevel@tonic-gate{ 730Sstevel@tonic-gate int f_dayAfter = 0; /* days after current date */ 740Sstevel@tonic-gate int f_dayBefore = 0; /* days before current date */ 750Sstevel@tonic-gate int Friday = 5; /* day before weekend */ 760Sstevel@tonic-gate 770Sstevel@tonic-gate int ch; 780Sstevel@tonic-gate struct tm tp1, tp2; 790Sstevel@tonic-gate 800Sstevel@tonic-gate (void)setlocale(LC_ALL, ""); 810Sstevel@tonic-gate 820Sstevel@tonic-gate while ((ch = getopt(argc, argv, "-A:aB:dD:F:f:l:t:U:W:")) != -1) 830Sstevel@tonic-gate switch (ch) { 840Sstevel@tonic-gate case '-': /* backward contemptible */ 850Sstevel@tonic-gate case 'a': 860Sstevel@tonic-gate if (getuid()) { 870Sstevel@tonic-gate errno = EPERM; 880Sstevel@tonic-gate err(1, NULL); 890Sstevel@tonic-gate } 900Sstevel@tonic-gate doall = 1; 910Sstevel@tonic-gate break; 920Sstevel@tonic-gate 930Sstevel@tonic-gate case 'f': /* other calendar file */ 940Sstevel@tonic-gate calendarFile = optarg; 950Sstevel@tonic-gate break; 960Sstevel@tonic-gate 970Sstevel@tonic-gate case 'W': /* we don't need no steenking Fridays */ 98 Friday = -1; 99 /* FALLTHROUGH */ 100 101 case 'A': /* days after current date */ 102 f_dayAfter = atoi(optarg); 103 break; 104 105 case 'B': /* days before current date */ 106 f_dayBefore = atoi(optarg); 107 break; 108 109 case 'F': /* Change the time: When does weekend start? */ 110 Friday = atoi(optarg); 111 break; 112 case 'l': /* Change longitudal position */ 113 EastLongitude = strtol(optarg, NULL, 10); 114 break; 115 case 'U': /* Change UTC offset */ 116 UTCOffset = strtod(optarg, NULL); 117 break; 118 119 case 'd': 120 debug = 1; 121 break; 122 case 'D': 123 DEBUG = optarg; 124 break; 125 case 't': /* other date, undocumented, for tests */ 126 f_time = Mktime(optarg); 127 break; 128 129 case '?': 130 default: 131 usage(); 132 } 133 134 argc -= optind; 135 argv += optind; 136 137 if (argc) 138 usage(); 139 140 /* use current time */ 141 if (f_time <= 0) 142 (void)time(&f_time); 143 144 /* if not set, determine where I could be */ 145 { 146 if (UTCOffset == UTCOFFSET_NOTSET && 147 EastLongitude == LONGITUDE_NOTSET) { 148 /* Calculate on difference between here and UTC */ 149 time_t t; 150 struct tm tm; 151 long utcoffset, hh, mm, ss; 152 double uo; 153 154 time(&t); 155 localtime_r(&t, &tm); 156 utcoffset = tm.tm_gmtoff; 157 /* seconds -> hh:mm:ss */ 158 hh = utcoffset / SECSPERHOUR; 159 utcoffset %= SECSPERHOUR; 160 mm = utcoffset / SECSPERMINUTE; 161 utcoffset %= SECSPERMINUTE; 162 ss = utcoffset; 163 164 /* hh:mm:ss -> hh.mmss */ 165 uo = mm + (100.0 * (ss / 60.0)); 166 uo /= 60.0 / 100.0; 167 uo = hh + uo / 100; 168 169 UTCOffset = uo; 170 EastLongitude = UTCOffset * 15; 171 } else if (UTCOffset == UTCOFFSET_NOTSET) { 172 /* Base on information given */ 173 UTCOffset = EastLongitude / 15; 174 } else if (EastLongitude == LONGITUDE_NOTSET) { 175 /* Base on information given */ 176 EastLongitude = UTCOffset * 15; 177 } 178 } 179 180 settimes(f_time, f_dayBefore, f_dayAfter, Friday, &tp1, &tp2); 181 generatedates(&tp1, &tp2); 182 183 /* 184 * FROM now on, we are working in UTC. 185 * This will only affect moon and sun related events anyway. 186 */ 187 if (setenv("TZ", "UTC", 1) != 0) 188 errx(1, "setenv: %s", strerror(errno)); 189 tzset(); 190 191 if (debug) 192 dumpdates(); 193 194 if (DEBUG != NULL) { 195 dodebug(DEBUG); 196 exit(0); 197 } 198 199 if (doall) 200 while ((pw = getpwent()) != NULL) { 201 (void)setegid(pw->pw_gid); 202 (void)initgroups(pw->pw_name, pw->pw_gid); 203 (void)seteuid(pw->pw_uid); 204 if (!chdir(pw->pw_dir)) 205 cal(); 206 (void)seteuid(0); 207 } 208 else 209 cal(); 210 exit(0); 211} 212 213 214static void __dead2 215usage(void) 216{ 217 218 fprintf(stderr, "%s\n%s\n%s\n", 219 "usage: calendar [-a] [-A days] [-B days] [-F friday] " 220 "[-f calendarfile]", 221 " [-d] [-t dd[.mm[.year]]] [-W days]", 222 " [-U utcoffset] [-l longitude]" 223 ); 224 exit(1); 225} 226