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StubZone: using GetAllNameServerAddresses() for getting all name server addresses.

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This commit is contained in:
Shreyas Zare
2020-06-20 17:35:04 +05:30
parent 33f28c8d89
commit 0360f76d28
1 changed files with 2 additions and 52 deletions
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54
DnsServerCore/Dns/Zones/StubZone.cs
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@@ -20,7 +20,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
using DnsServerCore.Dns.ResourceRecords;
using System;
using System.Collections.Generic;
using System.Net;
using System.Threading;
using TechnitiumLibrary.Net.Dns;
using TechnitiumLibrary.Net.Dns.ResourceRecords;
@@ -155,56 +154,7 @@ namespace DnsServerCore.Dns.Zones
_isExpired = DateTime.UtcNow > _expiry;
//get all name server addresses
List<NameServerAddress> nameServers = new List<NameServerAddress>();
IReadOnlyList<DnsResourceRecord> nsRecords = _entries[DnsResourceRecordType.NS];
foreach (DnsResourceRecord nsRecord in nsRecords)
{
string nsDomain = (nsRecord.RDATA as DnsNSRecord).NameServer;
IReadOnlyList<DnsResourceRecord> glueRecords = nsRecord.GetGlueRecords();
if (glueRecords.Count > 0)
{
foreach (DnsResourceRecord glueRecord in glueRecords)
{
switch (glueRecord.Type)
{
case DnsResourceRecordType.A:
nameServers.Add(new NameServerAddress(nsDomain, (glueRecord.RDATA as DnsARecord).Address));
break;
case DnsResourceRecordType.AAAA:
if (_dnsServer.PreferIPv6)
nameServers.Add(new NameServerAddress(nsDomain, (glueRecord.RDATA as DnsAAAARecord).Address));
break;
}
}
}
else
{
//resolve addresses
DnsDatagram response = _dnsServer.DirectQuery(new DnsQuestionRecord(nsDomain, DnsResourceRecordType.A, DnsClass.IN));
if (response != null)
{
IReadOnlyList<IPAddress> addresses = DnsClient.ParseResponseA(response);
foreach (IPAddress address in addresses)
nameServers.Add(new NameServerAddress(nsDomain, address));
}
if (_dnsServer.PreferIPv6)
{
response = _dnsServer.DirectQuery(new DnsQuestionRecord(nsDomain, DnsResourceRecordType.AAAA, DnsClass.IN));
if (response != null)
{
IReadOnlyList<IPAddress> addresses = DnsClient.ParseResponseAAAA(response);
foreach (IPAddress address in addresses)
nameServers.Add(new NameServerAddress(nsDomain, address));
}
}
}
}
IReadOnlyList<NameServerAddress> nameServers = GetAllNameServerAddresses(_dnsServer, false);
if (nameServers.Count == 0)
{
@@ -285,7 +235,7 @@ namespace DnsServerCore.Dns.Zones
{
LogManager log = _dnsServer.LogManager;
if (log != null)
log.Write("DNS Server successfully refreshed '" + _name + "' stub zone from: " + soaResponse.Metadata.NameServerAddress.ToString());
log.Write("DNS Server successfully checked for update to '" + _name + "' stub zone from: " + soaResponse.Metadata.NameServerAddress.ToString());
return true;
}