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22e155fc | 1 | /* |
8326fc5e | 2 | * Copyright (c) 1980, 1988 Regents of the University of California. |
86565271 KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
5e8b0e60 KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
22e155fc DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
8326fc5e | 20 | "@(#) Copyright (c) 1980, 1988 Regents of the University of California.\n\ |
22e155fc | 21 | All rights reserved.\n"; |
86565271 | 22 | #endif /* not lint */ |
22e155fc DF |
23 | |
24 | #ifndef lint | |
8326fc5e | 25 | static char sccsid[] = "@(#)leave.c 5.4 (Berkeley) %G%"; |
86565271 | 26 | #endif /* not lint */ |
22e155fc | 27 | |
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28 | #include <sys/param.h> |
29 | #include <sys/time.h> | |
fdd8e0d1 | 30 | #include <stdio.h> |
86565271 | 31 | #include <ctype.h> |
8326fc5e | 32 | |
fdd8e0d1 | 33 | /* |
cc4f5b4e | 34 | * leave [[+]hhmm] |
fdd8e0d1 BJ |
35 | * |
36 | * Reminds you when you have to leave. | |
37 | * Leave prompts for input and goes away if you hit return. | |
38 | * It nags you like a mother hen. | |
39 | */ | |
cc4f5b4e | 40 | main(argc, argv) |
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41 | int argc; |
42 | char **argv; | |
fdd8e0d1 | 43 | { |
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44 | register u_int secs; |
45 | register int hours, minutes; | |
46 | register char c, *cp; | |
47 | struct tm *t, *localtime(); | |
48 | time_t now, time(); | |
49 | int plusnow; | |
50 | char buf[50]; | |
fdd8e0d1 BJ |
51 | |
52 | if (argc < 2) { | |
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53 | #define MSG1 "When do you have to leave? " |
54 | (void)write(1, MSG1, sizeof(MSG1) - 1); | |
55 | cp = fgets(buf, sizeof(buf), stdin); | |
56 | if (*cp == '\n') | |
57 | exit(0); | |
cc4f5b4e RC |
58 | } else |
59 | cp = argv[1]; | |
8326fc5e | 60 | |
cc4f5b4e | 61 | if (*cp == '+') { |
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62 | plusnow = 1; |
63 | ++cp; | |
64 | } else { | |
65 | plusnow = 0; | |
66 | (void)time(&now); | |
67 | t = localtime(&now); | |
68 | } | |
69 | ||
70 | for (hours = 0; (c = *cp) && c != '\n'; ++cp) { | |
71 | if (!isdigit(c)) | |
cc4f5b4e | 72 | usage(); |
8326fc5e | 73 | hours = hours * 10 + (c - '0'); |
fdd8e0d1 | 74 | } |
8326fc5e KB |
75 | minutes = hours % 100; |
76 | hours /= 100; | |
fdd8e0d1 | 77 | |
8326fc5e | 78 | if (minutes < 0 || minutes > 59) |
cc4f5b4e | 79 | usage(); |
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80 | if (plusnow) |
81 | secs = hours * 60 * 60 + minutes * 60; | |
82 | else { | |
83 | if (hours > 23 || t->tm_hour > hours || | |
84 | t->tm_hour == hours && minutes <= t->tm_min) | |
85 | usage(); | |
86 | secs = (hours - t->tm_hour) * 60 * 60; | |
87 | secs += (minutes - t->tm_min) * 60; | |
cc4f5b4e | 88 | } |
8326fc5e | 89 | doalarm(secs); |
fdd8e0d1 BJ |
90 | exit(0); |
91 | } | |
92 | ||
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93 | static |
94 | doalarm(secs) | |
95 | u_int secs; | |
86565271 | 96 | { |
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97 | register int bother; |
98 | time_t daytime, time(); | |
99 | int pid; | |
100 | char *ctime(); | |
101 | ||
102 | if (pid = fork()) { | |
103 | (void)time(&daytime); | |
104 | daytime += secs; | |
105 | printf("Alarm set for %.16s. (pid %d)\n", | |
106 | ctime(&daytime), pid); | |
107 | exit(0); | |
86565271 | 108 | } |
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109 | sleep((u_int)2); /* let parent print set message */ |
110 | ||
111 | /* | |
112 | * if write fails, we've lost the terminal through someone else | |
113 | * causing a vhangup by logging in. | |
114 | */ | |
115 | #define FIVEMIN (5 * 60) | |
116 | #define MSG2 "\07\07You have to leave in 5 minutes.\n" | |
117 | if (secs >= FIVEMIN) { | |
118 | sleep(secs - FIVEMIN); | |
119 | if (write(1, MSG2, sizeof(MSG2) - 1) != sizeof(MSG2) - 1) | |
120 | exit(0); | |
121 | secs = FIVEMIN; | |
fdd8e0d1 BJ |
122 | } |
123 | ||
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124 | #define ONEMIN (60) |
125 | #define MSG3 "\07\07Just one more minute!\n" | |
126 | if (secs >= ONEMIN) { | |
127 | sleep(secs - ONEMIN); | |
128 | if (write(1, MSG3, sizeof(MSG3) - 1) != sizeof(MSG3) - 1) | |
129 | exit(0); | |
fdd8e0d1 BJ |
130 | } |
131 | ||
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132 | #define MSG4 "\07\07Time to leave!\n" |
133 | for (bother = 10; bother--;) { | |
134 | sleep((u_int)ONEMIN); | |
135 | if (write(1, MSG4, sizeof(MSG4) - 1) != sizeof(MSG4) - 1) | |
136 | exit(0); | |
137 | } | |
fdd8e0d1 | 138 | |
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139 | #define MSG5 "\07\07That was the last time I'll tell you. Bye.\n" |
140 | (void)write(1, MSG5, sizeof(MSG5) - 1); | |
cc4f5b4e | 141 | exit(0); |
fdd8e0d1 BJ |
142 | } |
143 | ||
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144 | static |
145 | usage() | |
cc4f5b4e | 146 | { |
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147 | fprintf(stderr, "usage: leave [[+]hhmm]\n"); |
148 | exit(1); | |
fdd8e0d1 | 149 | } |