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10cd4dfd WJ |
1 | /* |
2 | * Copyright (c) 1980, 1988 Regents of the University of California. | |
3 | * 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 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980, 1988 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)leave.c 5.6 (Berkeley) 3/1/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/param.h> | |
45 | #include <sys/time.h> | |
46 | #include <stdio.h> | |
47 | #include <ctype.h> | |
48 | ||
49 | /* | |
50 | * leave [[+]hhmm] | |
51 | * | |
52 | * Reminds you when you have to leave. | |
53 | * Leave prompts for input and goes away if you hit return. | |
54 | * It nags you like a mother hen. | |
55 | */ | |
56 | main(argc, argv) | |
57 | int argc; | |
58 | char **argv; | |
59 | { | |
60 | register u_int secs; | |
61 | register int hours, minutes; | |
62 | register char c, *cp; | |
63 | struct tm *t, *localtime(); | |
64 | time_t now, time(); | |
65 | int plusnow; | |
66 | char buf[50]; | |
67 | ||
68 | if (argc < 2) { | |
69 | #define MSG1 "When do you have to leave? " | |
70 | (void)write(1, MSG1, sizeof(MSG1) - 1); | |
71 | cp = fgets(buf, sizeof(buf), stdin); | |
72 | if (*cp == '\n') | |
73 | exit(0); | |
74 | } else | |
75 | cp = argv[1]; | |
76 | ||
77 | if (*cp == '+') { | |
78 | plusnow = 1; | |
79 | ++cp; | |
80 | } else { | |
81 | plusnow = 0; | |
82 | (void)time(&now); | |
83 | t = localtime(&now); | |
84 | } | |
85 | ||
86 | for (hours = 0; (c = *cp) && c != '\n'; ++cp) { | |
87 | if (!isdigit(c)) | |
88 | usage(); | |
89 | hours = hours * 10 + (c - '0'); | |
90 | } | |
91 | minutes = hours % 100; | |
92 | hours /= 100; | |
93 | ||
94 | if (minutes < 0 || minutes > 59) | |
95 | usage(); | |
96 | if (plusnow) | |
97 | secs = hours * 60 * 60 + minutes * 60; | |
98 | else { | |
99 | if (hours > 23 || t->tm_hour > hours || | |
100 | t->tm_hour == hours && minutes <= t->tm_min) | |
101 | usage(); | |
102 | secs = (hours - t->tm_hour) * 60 * 60; | |
103 | secs += (minutes - t->tm_min) * 60; | |
104 | } | |
105 | doalarm(secs); | |
106 | exit(0); | |
107 | } | |
108 | ||
109 | doalarm(secs) | |
110 | u_int secs; | |
111 | { | |
112 | register int bother; | |
113 | time_t daytime, time(); | |
114 | int pid; | |
115 | char *ctime(); | |
116 | ||
117 | if (pid = fork()) { | |
118 | (void)time(&daytime); | |
119 | daytime += secs; | |
120 | printf("Alarm set for %.16s. (pid %d)\n", | |
121 | ctime(&daytime), pid); | |
122 | exit(0); | |
123 | } | |
124 | sleep((u_int)2); /* let parent print set message */ | |
125 | ||
126 | /* | |
127 | * if write fails, we've lost the terminal through someone else | |
128 | * causing a vhangup by logging in. | |
129 | */ | |
130 | #define FIVEMIN (5 * 60) | |
131 | #define MSG2 "\07\07You have to leave in 5 minutes.\n" | |
132 | if (secs >= FIVEMIN) { | |
133 | sleep(secs - FIVEMIN); | |
134 | if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) | |
135 | exit(0); | |
136 | secs = FIVEMIN; | |
137 | } | |
138 | ||
139 | #define ONEMIN (60) | |
140 | #define MSG3 "\07\07Just one more minute!\n" | |
141 | if (secs >= ONEMIN) { | |
142 | sleep(secs - ONEMIN); | |
143 | if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) | |
144 | exit(0); | |
145 | } | |
146 | ||
147 | #define MSG4 "\07\07Time to leave!\n" | |
148 | for (bother = 10; bother--;) { | |
149 | sleep((u_int)ONEMIN); | |
150 | if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) | |
151 | exit(0); | |
152 | } | |
153 | ||
154 | #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" | |
155 | (void)write(1, MSG5, sizeof(MSG5) - 1); | |
156 | exit(0); | |
157 | } | |
158 | ||
159 | usage() | |
160 | { | |
161 | fprintf(stderr, "usage: leave [[+]hhmm]\n"); | |
162 | exit(1); | |
163 | } |