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 * 4. 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 * $DragonFly: src/usr.bin/leave/leave.c,v 1.7 2006/08/14 07:37:38 swildner Exp $ 33 */ 34 35 #include <err.h> 36 #include <ctype.h> 37 #include <langinfo.h> 38 #include <locale.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <time.h> 42 #include <unistd.h> 43 44 void doalarm(u_int); 45 static void usage(void); 46 47 /* 48 * leave [[+]hhmm] 49 * 50 * Reminds you when you have to leave. 51 * Leave prompts for input and goes away if you hit return. 52 * It nags you like a mother hen. 53 */ 54 int 55 main(int argc, char **argv) 56 { 57 u_int secs; 58 int hours, minutes; 59 char c, *cp = NULL; 60 struct tm *t; 61 time_t now; 62 int plusnow, t_12_hour; 63 char buf[50]; 64 65 if (setlocale(LC_TIME, "") == NULL) 66 warn("setlocale"); 67 68 if (argc < 2) { 69 #define MSG1 "When do you have to leave? " 70 (void)write(1, MSG1, sizeof(MSG1) - 1); 71 cp = fgets(buf, sizeof(buf), stdin); 72 if (cp == NULL || *cp == '\n') 73 exit(0); 74 } else if (argc > 2) 75 usage(); 76 else 77 cp = argv[1]; 78 79 if (*cp == '+') { 80 plusnow = 1; 81 ++cp; 82 } else 83 plusnow = 0; 84 85 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 86 if (!isdigit(c)) 87 usage(); 88 hours = hours * 10 + (c - '0'); 89 } 90 minutes = hours % 100; 91 hours /= 100; 92 93 if (minutes < 0 || minutes > 59) 94 usage(); 95 if (plusnow) 96 secs = hours * 60 * 60 + minutes * 60; 97 else { 98 (void)time(&now); 99 t = localtime(&now); 100 101 if (hours > 23) 102 usage(); 103 104 /* Convert tol to 12 hr time (0:00...11:59) */ 105 if (hours > 11) 106 hours -= 12; 107 108 /* Convert tm to 12 hr time (0:00...11:59) */ 109 if (t->tm_hour > 11) 110 t_12_hour = t->tm_hour - 12; 111 else 112 t_12_hour = t->tm_hour; 113 114 if (hours < t_12_hour || 115 (hours == t_12_hour && minutes <= t->tm_min)) 116 /* Leave time is in the past so we add 12 hrs */ 117 hours += 12; 118 119 secs = (hours - t_12_hour) * 60 * 60; 120 secs += (minutes - t->tm_min) * 60; 121 secs -= now % 60; /* truncate (now + secs) to min */ 122 } 123 doalarm(secs); 124 exit(0); 125 } 126 127 void 128 doalarm(u_int secs) 129 { 130 int bother; 131 time_t daytime; 132 char tb[80]; 133 int pid; 134 135 if ((pid = fork())) { 136 (void)time(&daytime); 137 daytime += secs; 138 strftime(tb, sizeof(tb), nl_langinfo(D_T_FMT), 139 localtime(&daytime)); 140 printf("Alarm set for %s. (pid %d)\n", tb, pid); 141 exit(0); 142 } 143 sleep((u_int)2); /* let parent print set message */ 144 if (secs >= 2) 145 secs -= 2; 146 147 /* 148 * if write fails, we've lost the terminal through someone else 149 * causing a vhangup by logging in. 150 */ 151 #define FIVEMIN (5 * 60) 152 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 153 if (secs >= FIVEMIN) { 154 sleep(secs - FIVEMIN); 155 if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 156 exit(0); 157 secs = FIVEMIN; 158 } 159 160 #define ONEMIN (60) 161 #define MSG3 "\07\07Just one more minute!\n" 162 if (secs >= ONEMIN) { 163 sleep(secs - ONEMIN); 164 if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 165 exit(0); 166 } 167 168 #define MSG4 "\07\07Time to leave!\n" 169 for (bother = 10; bother--;) { 170 sleep((u_int)ONEMIN); 171 if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 172 exit(0); 173 } 174 175 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 176 (void)write(1, MSG5, sizeof(MSG5) - 1); 177 exit(0); 178 } 179 180 static void 181 usage(void) 182 { 183 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 184 exit(1); 185 } 186