void
test_NtpToTime(void)
{
# if SIZEOF_TIME_T <= 4
TEST_IGNORE_MESSAGE("test only useful for sizeof(time_t) > 4, skipped");
# else
static const uint32_t ntp_vals[6] = {
UINT32_C(0x00000000),
UINT32_C(0x00000001),
UINT32_C(0x7FFFFFFF),
UINT32_C(0x80000000),
UINT32_C(0x80000001),
UINT32_C(0xFFFFFFFF)
};
static char lbuf[128];
vint64 hold;
time_t pivot, texp, diff;
uint32_t back;
int loops, iloop;
pivot = 0;
for (loops = 0; loops < 16; ++loops) {
for (iloop = 0; iloop < 6; ++iloop) {
hold = ntpcal_ntp_to_time(
ntp_vals[iloop], &pivot);
texp = vint64_to_time(&hold);
/* constraint 1: texp must be in the
* (right-open) intervall [p-(2^31), p+(2^31)[
*/
diff = texp - pivot;
snprintf(lbuf, sizeof(lbuf),
"bounds check: piv=%lld exp=%lld dif=%lld",
(long long)pivot,
(long long)texp,
(long long)diff);
TEST_ASSERT_MESSAGE((diff >= INT32_MIN) && (diff <= INT32_MAX),
lbuf);
/* constraint 2: conversion from full time back
* to truncated NTP time must yield same result
* as input.
*/
back = (uint32_t)texp + JAN_1970;
snprintf(lbuf, sizeof(lbuf),
"modulo check: ntp(in)=$%08lu ntp(out)=$%08lu",
(unsigned long)ntp_vals[iloop],
(unsigned long)back);
TEST_ASSERT_EQUAL_MESSAGE(ntp_vals[iloop], back, lbuf);
}
pivot += 0x20000000;
}
# endif
}
struct tm *
ntp2unix_tm(
u_int32 ntp, int local
)
{
vint64 vl;
vl = ntpcal_ntp_to_time(ntp, NULL);
return get_struct_tm(&vl, local);
}
static char *
common_prettydate(
l_fp *ts,
int local
)
{
static const char pfmt0[] =
"%08lx.%08lx %s, %s %2d %4d %2d:%02d:%02d.%03u";
static const char pfmt1[] =
"%08lx.%08lx [%s, %s %2d %4d %2d:%02d:%02d.%03u UTC]";
char *bp;
struct tm *tm;
u_int msec;
u_int32 ntps;
vint64 sec;
LIB_GETBUF(bp);
/* get & fix milliseconds */
ntps = ts->l_ui;
msec = ts->l_uf / 4294967; /* fract / (2 ** 32 / 1000) */
if (msec >= 1000u) {
msec -= 1000u;
ntps++;
}
sec = ntpcal_ntp_to_time(ntps, NULL);
tm = get_struct_tm(&sec, local);
if (!tm) {
/*
* get a replacement, but always in UTC, using
* ntpcal_time_to_date()
*/
struct calendar jd;
ntpcal_time_to_date(&jd, &sec);
snprintf(bp, LIB_BUFLENGTH, local ? pfmt1 : pfmt0,
(u_long)ts->l_ui, (u_long)ts->l_uf,
daynames[jd.weekday], months[jd.month-1],
jd.monthday, jd.year, jd.hour,
jd.minute, jd.second, msec);
} else
snprintf(bp, LIB_BUFLENGTH, pfmt0,
(u_long)ts->l_ui, (u_long)ts->l_uf,
daynames[tm->tm_wday], months[tm->tm_mon],
tm->tm_mday, 1900 + tm->tm_year, tm->tm_hour,
tm->tm_min, tm->tm_sec, msec);
return bp;
}
