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 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1980, 1988, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)leave.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 #endif /* not lint */ 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <err.h> 45 #include <ctype.h> 46 #include <locale.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <time.h> 50 #include <unistd.h> 51 52 static void doalarm(u_int); 53 static void usage(void); 54 55 /* 56 * leave [[+]hhmm] 57 * 58 * Reminds you when you have to leave. 59 * Leave prompts for input and goes away if you hit return. 60 * It nags you like a mother hen. 61 */ 62 int 63 main(int argc, char **argv) 64 { 65 u_int secs; 66 int hours, minutes; 67 char c, *cp = NULL; 68 struct tm *t; 69 time_t now; 70 int plusnow, t_12_hour; 71 char buf[50]; 72 73 if (setlocale(LC_TIME, "") == NULL) 74 warn("setlocale"); 75 76 if (argc < 2) { 77 #define MSG1 "When do you have to leave? " 78 (void)write(STDOUT_FILENO, MSG1, sizeof(MSG1) - 1); 79 cp = fgets(buf, sizeof(buf), stdin); 80 if (cp == NULL || *cp == '\n') 81 exit(0); 82 } else if (argc > 2) 83 usage(); 84 else 85 cp = argv[1]; 86 87 if (*cp == '+') { 88 plusnow = 1; 89 ++cp; 90 } else 91 plusnow = 0; 92 93 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 94 if (!isdigit(c)) 95 usage(); 96 hours = hours * 10 + (c - '0'); 97 } 98 minutes = hours % 100; 99 hours /= 100; 100 101 if (minutes < 0 || minutes > 59) 102 usage(); 103 if (plusnow) 104 secs = hours * 60 * 60 + minutes * 60; 105 else { 106 (void)time(&now); 107 t = localtime(&now); 108 109 if (hours > 23) 110 usage(); 111 112 /* Convert tol to 12 hr time (0:00...11:59) */ 113 if (hours > 11) 114 hours -= 12; 115 116 /* Convert tm to 12 hr time (0:00...11:59) */ 117 if (t->tm_hour > 11) 118 t_12_hour = t->tm_hour - 12; 119 else 120 t_12_hour = t->tm_hour; 121 122 if (hours < t_12_hour || 123 (hours == t_12_hour && minutes <= t->tm_min)) 124 /* Leave time is in the past so we add 12 hrs */ 125 hours += 12; 126 127 secs = (hours - t_12_hour) * 60 * 60; 128 secs += (minutes - t->tm_min) * 60; 129 secs -= now % 60; /* truncate (now + secs) to min */ 130 } 131 doalarm(secs); 132 exit(0); 133 } 134 135 void 136 doalarm(u_int secs) 137 { 138 int bother; 139 time_t daytime; 140 char tb[80]; 141 int pid; 142 143 if ((pid = fork())) { 144 (void)time(&daytime); 145 daytime += secs; 146 strftime(tb, sizeof(tb), "%+", localtime(&daytime)); 147 printf("Alarm set for %s. (pid %d)\n", tb, pid); 148 exit(0); 149 } 150 sleep((u_int)2); /* let parent print set message */ 151 if (secs >= 2) 152 secs -= 2; 153 154 /* 155 * if write fails, we've lost the terminal through someone else 156 * causing a vhangup by logging in. 157 */ 158 #define FIVEMIN (5 * 60) 159 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 160 if (secs >= FIVEMIN) { 161 sleep(secs - FIVEMIN); 162 if (write(STDOUT_FILENO, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 163 exit(0); 164 secs = FIVEMIN; 165 } 166 167 #define ONEMIN (60) 168 #define MSG3 "\07\07Just one more minute!\n" 169 if (secs >= ONEMIN) { 170 sleep(secs - ONEMIN); 171 if (write(STDOUT_FILENO, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 172 exit(0); 173 } 174 175 #define MSG4 "\07\07Time to leave!\n" 176 for (bother = 10; bother--;) { 177 sleep((u_int)ONEMIN); 178 if (write(STDOUT_FILENO, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 179 exit(0); 180 } 181 182 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 183 (void)write(STDOUT_FILENO, MSG5, sizeof(MSG5) - 1); 184 exit(0); 185 } 186 187 static void 188 usage(void) 189 { 190 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 191 exit(1); 192 } 193