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ntp: try adding other server addresses

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When adding a server from configuration file, don't give up when the
first returned address was already added for another server directive,
but try adding other addresses until one succeeds.
This commit is contained in:
Miroslav Lichvar
2014-10-23 15:20:14 +02:00
parent 4d1a754ec6
commit 40f8591257
1 changed files with 21 additions and 5 deletions
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26
ntp_sources.c
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@@ -299,11 +299,30 @@ NSR_AddSource(NTP_Remote_Address *remote_addr, NTP_Source_Type type, SourceParam
/* ================================================== */
static void
process_resolved_name(struct UnresolvedSource *us, IPAddr *ip_addrs, int n_addrs)
{
NTP_Remote_Address address;
int i;
for (i = 0; i < n_addrs; i++) {
DEBUG_LOG(LOGF_NtpSources, "%s resolved to %s", us->name, UTI_IPToString(&ip_addrs[i]));
address.ip_addr = ip_addrs[i];
address.port = us->port;
/* Add only one new source for this name */
if (NSR_AddSource(&address, us->type, &us->params) == NSR_Success)
break;
}
}
/* ================================================== */
static void
name_resolve_handler(DNS_Status status, int n_addrs, IPAddr *ip_addrs, void *anything)
{
struct UnresolvedSource *us, **i, *next;
NTP_Remote_Address address;
us = (struct UnresolvedSource *)anything;
@@ -313,10 +332,7 @@ name_resolve_handler(DNS_Status status, int n_addrs, IPAddr *ip_addrs, void *any
case DNS_TryAgain:
break;
case DNS_Success:
DEBUG_LOG(LOGF_NtpSources, "%s resolved to %s", us->name, UTI_IPToString(&ip_addrs[0]));
address.ip_addr = ip_addrs[0];
address.port = us->port;
NSR_AddSource(&address, us->type, &us->params);
process_resolved_name(us, ip_addrs, n_addrs);
break;
case DNS_Failure:
LOG(LOGS_WARN, LOGF_NtpSources, "Invalid host %s", us->name);