| 1 | static char *sccsid = "@(#)leave.c 4.1 (Berkeley) %G%"; |
| 2 | #include <stdio.h> |
| 3 | /* |
| 4 | * leave [hhmm] |
| 5 | * |
| 6 | * Reminds you when you have to leave. |
| 7 | * Leave prompts for input and goes away if you hit return. |
| 8 | * It nags you like a mother hen. |
| 9 | */ |
| 10 | char origlogin[20], thislogin[20]; |
| 11 | char *getlogin(); |
| 12 | char *whenleave; |
| 13 | char *ctime(); |
| 14 | char buff[100]; |
| 15 | |
| 16 | main(argc,argv) |
| 17 | char **argv; |
| 18 | { |
| 19 | long when, tod, now, diff, hours, minutes; |
| 20 | int *nv; |
| 21 | int atoi(); |
| 22 | int *localtime(); |
| 23 | |
| 24 | if (argc < 2) { |
| 25 | printf("When do you have to leave? "); |
| 26 | fflush(stdout); |
| 27 | buff[read(0,buff,sizeof buff)] = 0; |
| 28 | } else { |
| 29 | strcpy(buff,argv[1]); |
| 30 | } |
| 31 | |
| 32 | if (buff[0] == '\n') |
| 33 | exit(0); |
| 34 | if (buff[0] == '+') { |
| 35 | diff = atoi(buff+1); |
| 36 | doalarm(diff); |
| 37 | } |
| 38 | if (buff[0] < '0' || buff[0] > '9') { |
| 39 | printf("usage: %s [hhmm]\n",argv[0]); |
| 40 | exit(1); |
| 41 | } |
| 42 | strcpy(origlogin,getlogin()); |
| 43 | |
| 44 | tod = atoi(buff); |
| 45 | hours = tod / 100; |
| 46 | if (hours > 12) |
| 47 | hours -= 12; |
| 48 | if (hours == 12) |
| 49 | hours = 0; |
| 50 | minutes = tod % 100; |
| 51 | |
| 52 | if (hours < 0 || hours > 12 || minutes < 0 || minutes > 59) { |
| 53 | printf("usage: %s [hhmm]\n",argv[0]); |
| 54 | exit(1); |
| 55 | } |
| 56 | |
| 57 | setexit(); /* refigure time if killed */ |
| 58 | time(&now); |
| 59 | nv = localtime(&now); |
| 60 | when = 60*hours+minutes; |
| 61 | if (nv[2] > 12) nv[2] -= 12; /* do am/pm bit */ |
| 62 | now = 60*nv[2] + nv[1]; |
| 63 | diff = when - now; |
| 64 | while (diff < 0) |
| 65 | diff += 12*60; |
| 66 | if (diff > 11*60) printf("That time has already passed!\n"); |
| 67 | doalarm(diff); |
| 68 | exit(0); |
| 69 | } |
| 70 | |
| 71 | |
| 72 | doalarm(nmins) |
| 73 | long nmins; |
| 74 | { |
| 75 | char *msg1, *msg2, *msg3, *msg4; |
| 76 | register int i; |
| 77 | int slp1, slp2, slp3, slp4; |
| 78 | int seconds, gseconds; |
| 79 | long daytime; |
| 80 | |
| 81 | seconds = 60 * nmins; |
| 82 | if (seconds <= 0) |
| 83 | seconds = 1; |
| 84 | gseconds = seconds; |
| 85 | |
| 86 | msg1 = "You have to leave in 5 minutes"; |
| 87 | if (seconds <= 60*5) { |
| 88 | slp1 = 0; |
| 89 | } else { |
| 90 | slp1 = seconds - 60*5; |
| 91 | seconds = 60*5; |
| 92 | } |
| 93 | |
| 94 | msg2 = "Just one more minute!"; |
| 95 | if (seconds <= 60) { |
| 96 | slp2 = 0; |
| 97 | } else { |
| 98 | slp2 = seconds - 60; |
| 99 | seconds = 60; |
| 100 | } |
| 101 | |
| 102 | msg3 = "Time to leave!"; |
| 103 | slp3 = seconds; |
| 104 | |
| 105 | msg4 = "You're going to be late!"; |
| 106 | slp4 = 60; |
| 107 | |
| 108 | time(&daytime); |
| 109 | daytime += gseconds; |
| 110 | whenleave = ctime(&daytime); |
| 111 | printf("Alarm set for %s\n",whenleave); |
| 112 | if (fork()) |
| 113 | exit(0); |
| 114 | signal(2,1); |
| 115 | signal(3,1); |
| 116 | signal(15,1); |
| 117 | |
| 118 | if (slp1) |
| 119 | bother(slp1,msg1); |
| 120 | if (slp2) |
| 121 | bother(slp2,msg2); |
| 122 | bother(slp3,msg3); |
| 123 | for (;;) { |
| 124 | bother(slp4,msg4); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | bother(slp,msg) |
| 129 | int slp; |
| 130 | char *msg; |
| 131 | { |
| 132 | |
| 133 | delay(slp); |
| 134 | printf("\7\7\7"); |
| 135 | printf("%s\n",msg); |
| 136 | } |
| 137 | |
| 138 | /* |
| 139 | * delay is like sleep but does it in 100 sec pieces and |
| 140 | * knows what zero means. |
| 141 | */ |
| 142 | delay(secs) int secs; { |
| 143 | int n; |
| 144 | |
| 145 | while(secs>0) { |
| 146 | n = 100; |
| 147 | secs = secs - 100; |
| 148 | if (secs < 0) { |
| 149 | n = n + secs; |
| 150 | } |
| 151 | if (n > 0) |
| 152 | sleep(n); |
| 153 | strcpy(thislogin,getlogin()); |
| 154 | if (strcmp(origlogin, thislogin)) |
| 155 | exit(0); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | #ifdef V6 |
| 160 | char *getlogin() { |
| 161 | #include <utmp.h> |
| 162 | |
| 163 | static struct utmp ubuf; |
| 164 | int ufd; |
| 165 | |
| 166 | ufd = open("/etc/utmp",0); |
| 167 | seek(ufd, ttyn(0)*sizeof(ubuf), 0); |
| 168 | read(ufd, &ubuf, sizeof(ubuf)); |
| 169 | ubuf.ut_name[sizeof(ubuf.ut_name)] = 0; |
| 170 | return(&ubuf.ut_name); |
| 171 | } |
| 172 | #endif |