1 /* 2 * Copyright (c) 1980, 1988, 1993 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) 1980, 1988, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)leave.c 8.1 (Berkeley) 6/6/93 31 * $FreeBSD: src/usr.bin/leave/leave.c,v 1.5.2.2 2001/07/30 09:43:30 dd Exp $ 32 */ 33 34 #include <err.h> 35 #include <ctype.h> 36 #include <langinfo.h> 37 #include <locale.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <time.h> 41 #include <unistd.h> 42 43 static void doalarm(u_int) __dead2; 44 static void usage(void) __dead2; 45 46 /* 47 * leave [[+]hhmm] 48 * 49 * Reminds you when you have to leave. 50 * Leave prompts for input and goes away if you hit return. 51 * It nags you like a mother hen. 52 */ 53 int 54 main(int argc, char **argv) 55 { 56 u_int secs; 57 int hours, minutes; 58 char c, *cp = NULL; 59 struct tm *t; 60 time_t now; 61 int plusnow, t_12_hour; 62 char buf[50]; 63 64 if (setlocale(LC_TIME, "") == NULL) 65 warn("setlocale"); 66 67 if (argc < 2) { 68 #define MSG1 "When do you have to leave? " 69 (void)write(1, MSG1, sizeof(MSG1) - 1); 70 cp = fgets(buf, sizeof(buf), stdin); 71 if (cp == NULL || *cp == '\n') 72 exit(0); 73 } else if (argc > 2) 74 usage(); 75 else 76 cp = argv[1]; 77 78 if (*cp == '+') { 79 plusnow = 1; 80 ++cp; 81 } else 82 plusnow = 0; 83 84 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 85 if (!isdigit(c)) 86 usage(); 87 hours = hours * 10 + (c - '0'); 88 } 89 minutes = hours % 100; 90 hours /= 100; 91 92 if (minutes < 0 || minutes > 59) 93 usage(); 94 if (plusnow) 95 secs = hours * 60 * 60 + minutes * 60; 96 else { 97 (void)time(&now); 98 t = localtime(&now); 99 100 if (hours > 23) 101 usage(); 102 103 /* Convert tol to 12 hr time (0:00...11:59) */ 104 if (hours > 11) 105 hours -= 12; 106 107 /* Convert tm to 12 hr time (0:00...11:59) */ 108 if (t->tm_hour > 11) 109 t_12_hour = t->tm_hour - 12; 110 else 111 t_12_hour = t->tm_hour; 112 113 if (hours < t_12_hour || 114 (hours == t_12_hour && minutes <= t->tm_min)) 115 /* Leave time is in the past so we add 12 hrs */ 116 hours += 12; 117 118 secs = (hours - t_12_hour) * 60 * 60; 119 secs += (minutes - t->tm_min) * 60; 120 secs -= now % 60; /* truncate (now + secs) to min */ 121 } 122 doalarm(secs); 123 exit(0); 124 } 125 126 static void 127 doalarm(u_int secs) 128 { 129 int bother; 130 time_t daytime; 131 char tb[80]; 132 int pid; 133 134 if ((pid = fork())) { 135 (void)time(&daytime); 136 daytime += secs; 137 strftime(tb, sizeof(tb), nl_langinfo(D_T_FMT), 138 localtime(&daytime)); 139 printf("Alarm set for %s. (pid %d)\n", tb, pid); 140 exit(0); 141 } 142 sleep((u_int)2); /* let parent print set message */ 143 if (secs >= 2) 144 secs -= 2; 145 146 /* 147 * if write fails, we've lost the terminal through someone else 148 * causing a vhangup by logging in. 149 */ 150 #define FIVEMIN (5 * 60) 151 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 152 if (secs >= FIVEMIN) { 153 sleep(secs - FIVEMIN); 154 if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 155 exit(0); 156 secs = FIVEMIN; 157 } 158 159 #define ONEMIN (60) 160 #define MSG3 "\07\07Just one more minute!\n" 161 if (secs >= ONEMIN) { 162 sleep(secs - ONEMIN); 163 if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 164 exit(0); 165 } 166 167 #define MSG4 "\07\07Time to leave!\n" 168 for (bother = 10; bother--;) { 169 sleep((u_int)ONEMIN); 170 if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 171 exit(0); 172 } 173 174 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 175 (void)write(1, MSG5, sizeof(MSG5) - 1); 176 exit(0); 177 } 178 179 static void 180 usage(void) 181 { 182 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 183 exit(1); 184 } 185