/*
* NetRemoteTOD to get the current GMT time from a Windows NT server.
*/
int
srvsvc_gettime(unsigned long *t)
{
smb_domainex_t di;
struct timeval tv;
struct tm tm;
if (!smb_domain_getinfo(&di))
return (-1);
if (srvsvc_net_remote_tod(di.d_dc, di.d_primary.di_nbname, &tv, &tm)
!= 0)
return (-1);
*t = tv.tv_sec;
return (0);
}
/*
* Synchronize the local system clock with the domain controller.
*/
void
srvsvc_timesync(void)
{
smb_domainex_t di;
struct timeval tv;
struct tm tm;
time_t tsecs;
if (!smb_domain_getinfo(&di))
return;
if (srvsvc_net_remote_tod(di.d_dc, di.d_primary.di_nbname, &tv, &tm)
!= 0)
return;
if (settimeofday(&tv, 0))
smb_tracef("unable to set system time");
tsecs = time(0);
(void) localtime_r(&tsecs, &tm);
smb_tracef("SrvsvcTimeSync %s", ctime((time_t *)&tv.tv_sec));
}
/*
* Compare the time here with the remote time on the server
* and report clock skew.
*/
void
ndr_srvsvc_timecheck(char *server, char *domain)
{
char hostname[MAXHOSTNAMELEN];
struct timeval dc_tv;
struct tm dc_tm;
struct tm *tm;
time_t tnow;
time_t tdiff;
int priority;
if (srvsvc_net_remote_tod(server, domain, &dc_tv, &dc_tm) < 0) {
syslog(LOG_DEBUG, "srvsvc_net_remote_tod failed");
return;
}
tnow = time(NULL);
if (tnow > dc_tv.tv_sec)
tdiff = (tnow - dc_tv.tv_sec) / SECSPERMIN;
else
tdiff = (dc_tv.tv_sec - tnow) / SECSPERMIN;
if (tdiff != 0) {
(void) strlcpy(hostname, "localhost", MAXHOSTNAMELEN);
(void) gethostname(hostname, MAXHOSTNAMELEN);
priority = (tdiff > 2) ? LOG_NOTICE : LOG_DEBUG;
syslog(priority, "DC [%s] clock skew detected: %u minutes",
server, tdiff);
tm = gmtime(&dc_tv.tv_sec);
syslog(priority, "%-8s UTC: %s", server, asctime(tm));
tm = gmtime(&tnow);
syslog(priority, "%-8s UTC: %s", hostname, asctime(tm));
}
}
