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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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unix
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volume15
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ultrix-modem
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statelook.c
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C/C++ Source or Header
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1988-05-24
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/*
* Stuff to work out when to next change state (causes exit)
* and whether to apply a particular bit of the modem conversation.
*/
#include <time.h>
#include "modem.h"
#ifdef STATES
#define SECS_IN_WEEK (60L * 60L * 24L * 7L)
#define WEEK_TIME(d,h,m) ((((long)d*24L+(long)h)*60L+(long)m)*60L)
#define EVENT_LEN (sizeof(week_event)/sizeof(struct event))
#define IND_LEN (sizeof(ind_tab)/sizeof(struct ind))
/*
This is a table of when to turn on and off the autoanswer mode
of the modem.
*/
struct event {
long s_time;
int s_state;
} week_event[] = {
{ WEEK_TIME (0, 7, 35), AA | SPK }, /* AA on, speaker on 7:35 Sun */
{ WEEK_TIME (0, 22, 00), AA }, /* AA on, speaker off 22:00 Sun */
{ WEEK_TIME (1, 7, 35), SPK }, /* AA off, speaker on 7:35 Mon */
{ WEEK_TIME (1, 17, 25), AA | SPK }, /* AA on, speaker on 17:25 Mon */
{ WEEK_TIME (1, 22, 00), AA }, /* AA on, speaker off 22:00 Mon */
{ WEEK_TIME (2, 7, 35), SPK }, /* AA off, speaker on 7:35 Tue */
{ WEEK_TIME (2, 17, 25), AA | SPK }, /* AA on, speaker on 17:25 Tue */
{ WEEK_TIME (2, 22, 00), AA }, /* AA on, speaker off 22:00 Tue */
{ WEEK_TIME (3, 7, 35), SPK }, /* AA off, speaker on 7:35 Wed */
{ WEEK_TIME (3, 17, 25), AA | SPK }, /* AA on, speaker on 17:25 Wed */
{ WEEK_TIME (3, 22, 00), AA }, /* AA on, speaker off 22:00 Wed */
{ WEEK_TIME (4, 7, 35), SPK }, /* AA off, speaker on 7:35 Thu */
{ WEEK_TIME (4, 17, 25), AA | SPK }, /* AA on, speaker on 17:25 Thu */
{ WEEK_TIME (4, 22, 00), AA }, /* AA on, speaker off 22:00 Thu */
{ WEEK_TIME (5, 7, 35), SPK }, /* AA off, speaker on 7:35 Fri */
{ WEEK_TIME (5, 17, 25), AA | SPK }, /* AA on, speaker on 17:25 Fri */
{ WEEK_TIME (5, 22, 00), AA }, /* AA on, speaker off 22:00 Fri */
{ WEEK_TIME (6, 7, 35), AA | SPK }, /* AA on, speaker on 7:35 Sat */
{ WEEK_TIME (6, 22, 00), AA } /* AA on, speaker off 22:00 Sat */
};
long duration(state)
int *state; /* 0 if new Auto Answer state is OFF, 1 if ON */
{
long secs_into_week; /* Seconds since midnight Sunday morning */
long t;
struct tm *cur_time;
int i, index;
long delta, tst_delta;
t = time((long *) 0);
cur_time = localtime (&t);
secs_into_week = ((((long)(cur_time->tm_wday)) * 24L +
(long)(cur_time->tm_hour)) * 60L +
(long)(cur_time->tm_min)) * 60L +
(long)(cur_time->tm_sec);
delta = SECS_IN_WEEK + 1; /* SOMETHING has to be closer than this! */
/* Loop looking for an entry with a better delta (closer to now) */
for (i=0; i < EVENT_LEN; i++) {
tst_delta = week_event[i].s_time - secs_into_week;
if (tst_delta < 0L)
tst_delta += SECS_IN_WEEK; /* Adjust for wrap around */
if (tst_delta < delta) {
/* We found a closer event to now */
delta = tst_delta;
index = i;
}
}
/*
* Decrement index by one circularly (note table MUST be in order) --
*/
if (index-- == 0)
index = EVENT_LEN-1;
*state = week_event[index].s_state;
#ifdef DEBUG
printf("Currently in state %d. Will change in %ld seconds\n",
*state, delta);
#endif
return(delta);
}
/*
This routine decides whether a particular init line should be executed.
*/
applicable(p, state)
struct conv *p;
int state;
{
return(p->c_flags & state);
}
#endif