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 1.7 2006/08/14 07:37:38 swildner Exp $ 37 */ 38 39 #include <err.h> 40 #include <ctype.h> 41 #include <langinfo.h> 42 #include <locale.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <time.h> 46 #include <unistd.h> 47 48 void doalarm(u_int); 49 static void usage(void); 50 51 /* 52 * leave [[+]hhmm] 53 * 54 * Reminds you when you have to leave. 55 * Leave prompts for input and goes away if you hit return. 56 * It nags you like a mother hen. 57 */ 58 int 59 main(int argc, char **argv) 60 { 61 u_int secs; 62 int hours, minutes; 63 char c, *cp = NULL; 64 struct tm *t; 65 time_t now; 66 int plusnow, t_12_hour; 67 char buf[50]; 68 69 if (setlocale(LC_TIME, "") == NULL) 70 warn("setlocale"); 71 72 if (argc < 2) { 73 #define MSG1 "When do you have to leave? " 74 (void)write(1, MSG1, sizeof(MSG1) - 1); 75 cp = fgets(buf, sizeof(buf), stdin); 76 if (cp == NULL || *cp == '\n') 77 exit(0); 78 } else if (argc > 2) 79 usage(); 80 else 81 cp = argv[1]; 82 83 if (*cp == '+') { 84 plusnow = 1; 85 ++cp; 86 } else 87 plusnow = 0; 88 89 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 90 if (!isdigit(c)) 91 usage(); 92 hours = hours * 10 + (c - '0'); 93 } 94 minutes = hours % 100; 95 hours /= 100; 96 97 if (minutes < 0 || minutes > 59) 98 usage(); 99 if (plusnow) 100 secs = hours * 60 * 60 + minutes * 60; 101 else { 102 (void)time(&now); 103 t = localtime(&now); 104 105 if (hours > 23) 106 usage(); 107 108 /* Convert tol to 12 hr time (0:00...11:59) */ 109 if (hours > 11) 110 hours -= 12; 111 112 /* Convert tm to 12 hr time (0:00...11:59) */ 113 if (t->tm_hour > 11) 114 t_12_hour = t->tm_hour - 12; 115 else 116 t_12_hour = t->tm_hour; 117 118 if (hours < t_12_hour || 119 (hours == t_12_hour && minutes <= t->tm_min)) 120 /* Leave time is in the past so we add 12 hrs */ 121 hours += 12; 122 123 secs = (hours - t_12_hour) * 60 * 60; 124 secs += (minutes - t->tm_min) * 60; 125 secs -= now % 60; /* truncate (now + secs) to min */ 126 } 127 doalarm(secs); 128 exit(0); 129 } 130 131 void 132 doalarm(u_int secs) 133 { 134 int bother; 135 time_t daytime; 136 char tb[80]; 137 int pid; 138 139 if ((pid = fork())) { 140 (void)time(&daytime); 141 daytime += secs; 142 strftime(tb, sizeof(tb), nl_langinfo(D_T_FMT), 143 localtime(&daytime)); 144 printf("Alarm set for %s. (pid %d)\n", tb, pid); 145 exit(0); 146 } 147 sleep((u_int)2); /* let parent print set message */ 148 if (secs >= 2) 149 secs -= 2; 150 151 /* 152 * if write fails, we've lost the terminal through someone else 153 * causing a vhangup by logging in. 154 */ 155 #define FIVEMIN (5 * 60) 156 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 157 if (secs >= FIVEMIN) { 158 sleep(secs - FIVEMIN); 159 if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 160 exit(0); 161 secs = FIVEMIN; 162 } 163 164 #define ONEMIN (60) 165 #define MSG3 "\07\07Just one more minute!\n" 166 if (secs >= ONEMIN) { 167 sleep(secs - ONEMIN); 168 if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 169 exit(0); 170 } 171 172 #define MSG4 "\07\07Time to leave!\n" 173 for (bother = 10; bother--;) { 174 sleep((u_int)ONEMIN); 175 if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 176 exit(0); 177 } 178 179 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 180 (void)write(1, MSG5, sizeof(MSG5) - 1); 181 exit(0); 182 } 183 184 static void 185 usage(void) 186 { 187 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 188 exit(1); 189 } 190