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/* $Revision: 1.4 $
**
*/
#include <stdio.h>
#include <sys/types.h>
#include "configdata.h"
#if defined(DO_NEED_TIME)
#include <time.h>
#endif /* defined(DO_NEED_TIME) */
#include <sys/time.h>
#include "libinn.h"
int
GetTimeInfo(Now)
TIMEINFO *Now;
{
static time_t LastTime;
static long LastTzone;
struct tm *tm;
#if defined(DO_HAVE_GETTIMEOFDAY)
struct timeval tv;
#endif /* defined(DO_HAVE_GETTIMEOFDAY) */
#if defined(DONT_HAVE_TM_GMTOFF)
struct tm local;
struct tm gmt;
#endif /* !defined(DONT_HAVE_TM_GMTOFF) */
/* Get the basic time. */
#if defined(DO_HAVE_GETTIMEOFDAY)
if (gettimeofday(&tv, (struct timezone *)NULL) == -1)
return -1;
Now->time = tv.tv_sec;
Now->usec = tv.tv_usec;
#else
/* Can't check for -1 since that might be a time, I guess. */
(void)time(&Now->time);
Now->usec = 0;
#endif /* defined(DO_HAVE_GETTIMEOFDAY) */
/* Now get the timezone if it's been an hour since the last time. */
if (Now->time - LastTime > 60 * 60) {
LastTime = Now->time;
if ((tm = localtime(&Now->time)) == NULL)
return -1;
#if defined(DONT_HAVE_TM_GMTOFF)
/* To get the timezone, compare localtime with GMT. */
local = *tm;
if ((tm = gmtime(&Now->time)) == NULL)
return -1;
gmt = *tm;
/* Assume we are never more than 24 hours away. */
LastTzone = gmt.tm_yday - local.tm_yday;
if (LastTzone > 1)
LastTzone = -24;
else if (LastTzone < -1)
LastTzone = 24;
else
LastTzone *= 24;
/* Scale in the hours and minutes; ignore seconds. */
LastTzone += gmt.tm_hour - local.tm_hour;
LastTzone *= 60;
LastTzone += gmt.tm_min - local.tm_min;
#else
LastTzone = (0 - tm->tm_gmtoff) / 60;
#endif /* defined(DONT_HAVE_TM_GMTOFF) */
}
Now->tzone = LastTzone;
return 0;
}
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