/*
 * tzone.c - get the timezone
 *
 * This is shared by bootpd and bootpef
 */

#ifdef  SVR4
/* XXX - Is this really SunOS specific? -gwr */
/* This is in <time.h> but only visible if (__STDC__ == 1). */
extern long timezone;
#else /* SVR4 */
/* BSD or SunOS */
# include <time.h>
# include <syslog.h>
#endif /* SVR4 */

#include "bptypes.h"
#include "report.h"
#include "tzone.h"

/* This is what other modules use. */
int32 secondswest;

/*
 * Get our timezone offset so we can give it to clients if the
 * configuration file doesn't specify one.
 */
void
tzone_init()
{
#ifdef  SVR4
        /* XXX - Is this really SunOS specific? -gwr */
        secondswest = timezone;
#else /* SVR4 */
        struct tm *tm;
        time_t now;

        (void)time(&now);
        if ((tm = localtime(&now)) == NULL) {
                secondswest = 0;                /* Assume GMT for lack of anything better */
                report(LOG_ERR, "localtime() failed");
        } else {
                secondswest = -tm->tm_gmtoff;
        }
#endif /* SVR4 */
}