static int serve(struct ntpd_param *param) {
int ret;
struct ntphdr rep;
struct timespec ts;
assert(param != NULL);
while (param->running) {
ret = recv(param->sock, &rep, sizeof rep, 0);
if (ret == -1) {
perror("ntpd: recv() failure");
return -errno;
}
else if (ret < sizeof rep) {
continue;
}
else if (ntp_mode_client(&rep)
|| !ntp_valid_stratum(&rep)) {
continue;
}
param->replied = 1;
param->poll = rep.poll;
ret = ntp_time(&rep, &ts);
if (ret != 0) {
return ret;
}
settimeofday(&ts, NULL);
}
return 0;
}
fc::time_point_sec now()
{
if( simulated_time ) return fc::time_point() + fc::seconds(simulated_time + adjusted_time_sec);
auto ntp = ntp_time();
if( ntp )
return *ntp + fc::seconds( adjusted_time_sec );
else
return fc::time_point::now() + fc::seconds( adjusted_time_sec );
}
fc::time_point_sec now()
{
if( simulated_time )
return fc::time_point() + fc::seconds( simulated_time + adjusted_time_sec );
fc::optional<fc::time_point> current_ntp_time = ntp_time();
if( current_ntp_time.valid() )
return *current_ntp_time + fc::seconds( adjusted_time_sec );
else
return fc::time_point::now() + fc::seconds( adjusted_time_sec );
}
static int ntpdate_process(const struct ntphdr *rep, in_addr_t addr, int only_query) {
int ret;
struct timespec ts;
assert(rep != NULL);
if (!ntp_valid_stratum(rep)) {
printf("ntpdate_process: error: invalid stratum (%s)\n",
ntp_stratum_error(rep));
return 0; /* error: incorrect packet */
}
if (only_query) {
/* show result */
struct timespec offset, delay;
getnsofday(&ts, NULL);
ret = ntp_offset(rep, &ts, &offset);
if (ret != 0) {
return ret;
}
ret = ntp_delay(rep, &ts, &delay);
if (ret != 0) {
return ret;
}
printf("server %s, stratum %hhd, offset %ld.%.6ld, delay %ld.%.6ld\n",
inet_ntoa(*(struct in_addr *)&addr),
rep->stratum,
offset.tv_sec, offset.tv_nsec / NSEC_PER_USEC,
delay.tv_sec, delay.tv_nsec / NSEC_PER_USEC);
printf("[%s] adjust time server %s offset %ld.%.6ld sec\n",
ctime(&ts.tv_sec),
inet_ntoa(*(struct in_addr *)&addr),
offset.tv_sec, offset.tv_nsec / NSEC_PER_USEC);
}
else {
/* setup new time */
ret = ntp_time(rep, &ts);
if (ret != 0) {
return ret;
}
settimeofday(&ts, NULL);
}
return 0;
}
fc::microseconds ntp_error()
{
fc::optional<fc::time_point> current_ntp_time = ntp_time();
FC_ASSERT( current_ntp_time, "We don't have NTP time!" );
return *current_ntp_time - fc::time_point::now();
}
double ntp_error()
{
FC_ASSERT(ntp_time(), "We don't have NTP time, we can't calculate error");
return ( *ntp_time() - fc::time_point::now() ).count() / double( 1000000 );
}