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 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)leave.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <err.h> 49 #include <ctype.h> 50 #include <locale.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <time.h> 54 #include <unistd.h> 55 56 void doalarm __P((u_int)); 57 static void usage __P((void)); 58 59 /* 60 * leave [[+]hhmm] 61 * 62 * Reminds you when you have to leave. 63 * Leave prompts for input and goes away if you hit return. 64 * It nags you like a mother hen. 65 */ 66 int 67 main(argc, argv) 68 int argc; 69 char **argv; 70 { 71 register u_int secs; 72 register int hours, minutes; 73 register char c, *cp = NULL; 74 struct tm *t; 75 time_t now; 76 int plusnow, t_12_hour; 77 char buf[50]; 78 79 if (setlocale(LC_TIME, "") == NULL) 80 warn("setlocale"); 81 82 if (argc < 2) { 83 #define MSG1 "When do you have to leave? " 84 (void)write(STDOUT_FILENO, MSG1, sizeof(MSG1) - 1); 85 cp = fgets(buf, sizeof(buf), stdin); 86 if (cp == NULL || *cp == '\n') 87 exit(0); 88 } else if (argc > 2) 89 usage(); 90 else 91 cp = argv[1]; 92 93 if (*cp == '+') { 94 plusnow = 1; 95 ++cp; 96 } else 97 plusnow = 0; 98 99 for (hours = 0; (c = *cp) && c != '\n'; ++cp) { 100 if (!isdigit(c)) 101 usage(); 102 hours = hours * 10 + (c - '0'); 103 } 104 minutes = hours % 100; 105 hours /= 100; 106 107 if (minutes < 0 || minutes > 59) 108 usage(); 109 if (plusnow) 110 secs = hours * 60 * 60 + minutes * 60; 111 else { 112 (void)time(&now); 113 t = localtime(&now); 114 115 if (hours > 23) 116 usage(); 117 118 /* Convert tol to 12 hr time (0:00...11:59) */ 119 if (hours > 11) 120 hours -= 12; 121 122 /* Convert tm to 12 hr time (0:00...11:59) */ 123 if (t->tm_hour > 11) 124 t_12_hour = t->tm_hour - 12; 125 else 126 t_12_hour = t->tm_hour; 127 128 if (hours < t_12_hour || 129 (hours == t_12_hour && minutes <= t->tm_min)) 130 /* Leave time is in the past so we add 12 hrs */ 131 hours += 12; 132 133 secs = (hours - t_12_hour) * 60 * 60; 134 secs += (minutes - t->tm_min) * 60; 135 secs -= now % 60; /* truncate (now + secs) to min */ 136 } 137 doalarm(secs); 138 exit(0); 139 } 140 141 void 142 doalarm(secs) 143 u_int secs; 144 { 145 register int bother; 146 time_t daytime; 147 char tb[80]; 148 int pid; 149 150 if ((pid = fork())) { 151 (void)time(&daytime); 152 daytime += secs; 153 strftime(tb, sizeof(tb), "%+", localtime(&daytime)); 154 printf("Alarm set for %s. (pid %d)\n", tb, pid); 155 exit(0); 156 } 157 sleep((u_int)2); /* let parent print set message */ 158 if (secs >= 2) 159 secs -= 2; 160 161 /* 162 * if write fails, we've lost the terminal through someone else 163 * causing a vhangup by logging in. 164 */ 165 #define FIVEMIN (5 * 60) 166 #define MSG2 "\07\07You have to leave in 5 minutes.\n" 167 if (secs >= FIVEMIN) { 168 sleep(secs - FIVEMIN); 169 if (write(STDOUT_FILENO, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) 170 exit(0); 171 secs = FIVEMIN; 172 } 173 174 #define ONEMIN (60) 175 #define MSG3 "\07\07Just one more minute!\n" 176 if (secs >= ONEMIN) { 177 sleep(secs - ONEMIN); 178 if (write(STDOUT_FILENO, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) 179 exit(0); 180 } 181 182 #define MSG4 "\07\07Time to leave!\n" 183 for (bother = 10; bother--;) { 184 sleep((u_int)ONEMIN); 185 if (write(STDOUT_FILENO, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) 186 exit(0); 187 } 188 189 #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" 190 (void)write(STDOUT_FILENO, MSG5, sizeof(MSG5) - 1); 191 exit(0); 192 } 193 194 static void 195 usage() 196 { 197 fprintf(stderr, "usage: leave [[+]hhmm]\n"); 198 exit(1); 199 } 200