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AuthZoneManager: updated Query() to allow APP records processing for forwarder zones, minor update to return referral response when zone found is a delegation.

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This commit is contained in:
Shreyas Zare
2022-09-18 17:33:23 +05:30
parent e800afd3a0
commit e1bdfd151a
1 changed files with 18 additions and 10 deletions
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28
DnsServerCore/Dns/ZoneManagers/AuthZoneManager.cs
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@@ -1697,9 +1697,6 @@ namespace DnsServerCore.Dns.ZoneManagers
if (apexZone is StubZone)
return GetReferralResponse(request, false, apexZone, apexZone, isRecursionAllowed);
if (apexZone is ForwarderZone)
return GetForwarderResponse(request, null, closest, apexZone, isRecursionAllowed);
DnsResponseCode rCode = DnsResponseCode.NoError;
IReadOnlyList<DnsResourceRecord> answer = null;
IReadOnlyList<DnsResourceRecord> authority = null;
@@ -1733,6 +1730,9 @@ namespace DnsServerCore.Dns.ZoneManagers
authority = apexZone.QueryRecords(DnsResourceRecordType.APP, false);
if (authority.Count == 0)
{
if (apexZone is ForwarderZone)
return GetForwarderResponse(request, null, closest, apexZone, isRecursionAllowed); //no DNAME or APP record available so process FWD response
if (!hasSubDomains)
rCode = DnsResponseCode.NxDomain;
@@ -1767,12 +1767,20 @@ namespace DnsServerCore.Dns.ZoneManagers
else
{
//zone found
if ((question.Type == DnsResourceRecordType.DS) && (zone is ApexZone))
if (question.Type == DnsResourceRecordType.DS)
{
if (delegation is null || !delegation.IsActive || (delegation.Name.Length > apexZone.Name.Length))
return null; //no authoritative parent side delegation zone available to answer for DS
if (zone is ApexZone)
{
if (delegation is null || !delegation.IsActive || (delegation.Name.Length > apexZone.Name.Length))
return null; //no authoritative parent side delegation zone available to answer for DS
zone = delegation; //switch zone to parent side sub domain delegation zone for DS record
zone = delegation; //switch zone to parent side sub domain delegation zone for DS record
}
}
else if (zone.Equals(delegation))
{
//zone is delegation
return GetReferralResponse(request, dnssecOk, delegation, apexZone, isRecursionAllowed);
}
IReadOnlyList<DnsResourceRecord> authority = null;
@@ -1806,9 +1814,6 @@ namespace DnsServerCore.Dns.ZoneManagers
if (apexZone is StubZone)
return GetReferralResponse(request, false, apexZone, apexZone, isRecursionAllowed);
if (apexZone is ForwarderZone)
return GetForwarderResponse(request, zone, closest, apexZone, isRecursionAllowed);
}
authority = zone.QueryRecords(DnsResourceRecordType.APP, false);
@@ -1822,6 +1827,9 @@ namespace DnsServerCore.Dns.ZoneManagers
authority = apexZone.QueryRecords(DnsResourceRecordType.APP, false);
if (authority.Count == 0)
{
if (apexZone is ForwarderZone)
return GetForwarderResponse(request, zone, closest, apexZone, isRecursionAllowed); //no APP record available so process FWD response
authority = apexZone.QueryRecords(DnsResourceRecordType.SOA, dnssecOk);
if (dnssecOk)