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. 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) 1980, 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)leave.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/leave/leave.c,v 1.5.2.2 2001/07/30 09:43:30 dd Exp $ 36 * $DragonFly: src/usr.bin/leave/leave.c,v 1.4 2005/04/10 20:55:38 drhodus Exp $ 37 */ 38 39 #include <err.h> 40 #include <ctype.h> 41 #include <locale.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <time.h> 45 #include <unistd.h> 46 47 void doalarm(u_int); 48 static void usage(void); 49 50 /* 51 * leave [[+]hhmm] 52 * 53 * Reminds you when you have to leave. 54 * Leave prompts for input and goes away if you hit return. 55 * It nags you like a mother hen. 56 */ 57 int 58 main(int argc, char **argv) 59 { 60 u_int secs; 61 int hours, minutes; 62 char c, *cp = NULL; 63 struct tm *t; 64 time_t now; 65 int plusnow, t_12_hour; 66 char buf[50]; 67 68 if (setlocale(LC_TIME, "") == NULL) 69 warn("setlocale"); 70 71 if (argc < 2) { 72 #define MSG1 "When do you have to leave? " 73 (void)write(1, MSG1, sizeof(MSG1) - 1); 74 cp = fgets(buf, sizeof(buf), stdin); 75 if (cp == NULL || *cp == '\n') 76 exit(0); 77 } else if (argc > 2) 78 usage(); 79 else 80 cp = argv[1]; 81 82 if (*cp == '+') { 83 plusnow = 1; 84 ++cp; 85 } else 86 plusnow = 0; 87 88 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 89 if (!isdigit(c)) 90 usage(); 91 hours = hours * 10 + (c - '0'); 92 } 93 minutes = hours % 100; 94 hours /= 100; 95 96 if (minutes < 0 || minutes > 59) 97 usage(); 98 if (plusnow) 99 secs = hours * 60 * 60 + minutes * 60; 100 else { 101 (void)time(&now); 102 t = localtime(&now); 103 104 if (hours > 23) 105 usage(); 106 107 /* Convert tol to 12 hr time (0:00...11:59) */ 108 if (hours > 11) 109 hours -= 12; 110 111 /* Convert tm to 12 hr time (0:00...11:59) */ 112 if (t->tm_hour > 11) 113 t_12_hour = t->tm_hour - 12; 114 else 115 t_12_hour = t->tm_hour; 116 117 if (hours < t_12_hour || 118 (hours == t_12_hour && minutes <= t->tm_min)) 119 /* Leave time is in the past so we add 12 hrs */ 120 hours += 12; 121 122 secs = (hours - t_12_hour) * 60 * 60; 123 secs += (minutes - t->tm_min) * 60; 124 secs -= now % 60; /* truncate (now + secs) to min */ 125 } 126 doalarm(secs); 127 exit(0); 128 } 129 130 void 131 doalarm(u_int secs) 132 { 133 int bother; 134 time_t daytime; 135 char tb[80]; 136 int pid; 137 138 if ((pid = fork())) { 139 (void)time(&daytime); 140 daytime += secs; 141 strftime(tb, sizeof(tb), "%+", localtime(&daytime)); 142 printf("Alarm set for %s. (pid %d)\n", tb, pid); 143 exit(0); 144 } 145 sleep((u_int)2); /* let parent print set message */ 146 if (secs >= 2) 147 secs -= 2; 148 149 /* 150 * if write fails, we've lost the terminal through someone else 151 * causing a vhangup by logging in. 152 */ 153 #define FIVEMIN (5 * 60) 154 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 155 if (secs >= FIVEMIN) { 156 sleep(secs - FIVEMIN); 157 if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 158 exit(0); 159 secs = FIVEMIN; 160 } 161 162 #define ONEMIN (60) 163 #define MSG3 "\07\07Just one more minute!\n" 164 if (secs >= ONEMIN) { 165 sleep(secs - ONEMIN); 166 if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 167 exit(0); 168 } 169 170 #define MSG4 "\07\07Time to leave!\n" 171 for (bother = 10; bother--;) { 172 sleep((u_int)ONEMIN); 173 if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 174 exit(0); 175 } 176 177 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 178 (void)write(1, MSG5, sizeof(MSG5) - 1); 179 exit(0); 180 } 181 182 static void 183 usage(void) 184 { 185 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 186 exit(1); 187 } 188