1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1980, 1988, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)leave.c 8.1 (Berkeley) 6/6/93"; 41 #endif 42 #endif /* not lint */ 43 #include <sys/cdefs.h> 44 __FBSDID("$FreeBSD$"); 45 46 #include <err.h> 47 #include <ctype.h> 48 #include <locale.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <time.h> 52 #include <unistd.h> 53 54 static void doalarm(u_int); 55 static void usage(void); 56 57 /* 58 * leave [[+]hhmm] 59 * 60 * Reminds you when you have to leave. 61 * Leave prompts for input and goes away if you hit return. 62 * It nags you like a mother hen. 63 */ 64 int 65 main(int argc, char **argv) 66 { 67 u_int secs; 68 int hours, minutes; 69 char c, *cp = NULL; 70 struct tm *t; 71 time_t now; 72 int plusnow, t_12_hour; 73 char buf[50]; 74 75 if (setlocale(LC_TIME, "") == NULL) 76 warn("setlocale"); 77 78 if (argc < 2) { 79 #define MSG1 "When do you have to leave? " 80 (void)write(STDOUT_FILENO, MSG1, sizeof(MSG1) - 1); 81 cp = fgets(buf, sizeof(buf), stdin); 82 if (cp == NULL || *cp == '\n') 83 exit(0); 84 } else if (argc > 2) 85 usage(); 86 else 87 cp = argv[1]; 88 89 if (*cp == '+') { 90 plusnow = 1; 91 ++cp; 92 } else 93 plusnow = 0; 94 95 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 96 if (!isdigit(c)) 97 usage(); 98 hours = hours * 10 + (c - '0'); 99 } 100 minutes = hours % 100; 101 hours /= 100; 102 103 if (minutes < 0 || minutes > 59) 104 usage(); 105 if (plusnow) 106 secs = hours * 60 * 60 + minutes * 60; 107 else { 108 (void)time(&now); 109 t = localtime(&now); 110 111 if (hours > 23) 112 usage(); 113 114 /* Convert tol to 12 hr time (0:00...11:59) */ 115 if (hours > 11) 116 hours -= 12; 117 118 /* Convert tm to 12 hr time (0:00...11:59) */ 119 if (t->tm_hour > 11) 120 t_12_hour = t->tm_hour - 12; 121 else 122 t_12_hour = t->tm_hour; 123 124 if (hours < t_12_hour || 125 (hours == t_12_hour && minutes <= t->tm_min)) 126 /* Leave time is in the past so we add 12 hrs */ 127 hours += 12; 128 129 secs = (hours - t_12_hour) * 60 * 60; 130 secs += (minutes - t->tm_min) * 60; 131 secs -= now % 60; /* truncate (now + secs) to min */ 132 } 133 doalarm(secs); 134 exit(0); 135 } 136 137 void 138 doalarm(u_int secs) 139 { 140 int bother; 141 time_t daytime; 142 char tb[80]; 143 int pid; 144 145 if ((pid = fork())) { 146 (void)time(&daytime); 147 daytime += secs; 148 strftime(tb, sizeof(tb), "%+", localtime(&daytime)); 149 printf("Alarm set for %s. (pid %d)\n", tb, pid); 150 exit(0); 151 } 152 sleep((u_int)2); /* let parent print set message */ 153 if (secs >= 2) 154 secs -= 2; 155 156 /* 157 * if write fails, we've lost the terminal through someone else 158 * causing a vhangup by logging in. 159 */ 160 #define FIVEMIN (5 * 60) 161 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 162 if (secs >= FIVEMIN) { 163 sleep(secs - FIVEMIN); 164 if (write(STDOUT_FILENO, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 165 exit(0); 166 secs = FIVEMIN; 167 } 168 169 #define ONEMIN (60) 170 #define MSG3 "\07\07Just one more minute!\n" 171 if (secs >= ONEMIN) { 172 sleep(secs - ONEMIN); 173 if (write(STDOUT_FILENO, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 174 exit(0); 175 } 176 177 #define MSG4 "\07\07Time to leave!\n" 178 for (bother = 10; bother--;) { 179 sleep((u_int)ONEMIN); 180 if (write(STDOUT_FILENO, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 181 exit(0); 182 } 183 184 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 185 (void)write(STDOUT_FILENO, MSG5, sizeof(MSG5) - 1); 186 exit(0); 187 } 188 189 static void 190 usage(void) 191 { 192 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 193 exit(1); 194 } 195