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Zone: fixed bug in GetClosestAuthority() by enabling CNAME bypass for reading SOA record. Empty response from authority name server caching done when SOA is missing due to bad config.

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This commit is contained in:
Shreyas Zare
2018-09-15 13:16:26 +05:30
parent c407793d2c
commit af2a226006
1 changed files with 19 additions and 1 deletions
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20
DnsServerCore/Zone.cs
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@@ -427,7 +427,7 @@ namespace DnsServerCore
while (currentZone != null)
{
nsRecords = currentZone.QueryRecords(DnsResourceRecordType.SOA);
nsRecords = currentZone.QueryRecords(DnsResourceRecordType.SOA, true);
if ((nsRecords != null) && (nsRecords.Length > 0) && (nsRecords[0].Type == DnsResourceRecordType.SOA))
return nsRecords;
@@ -744,6 +744,24 @@ namespace DnsServerCore
CreateZone(this, question.Name).SetRecords(question.Type, new DnsResourceRecord[] { record });
}
}
else
{
foreach (DnsQuestionRecord question in response.Question)
{
foreach (DnsResourceRecord authorityRecord in response.Authority)
{
if ((authorityRecord.Type == DnsResourceRecordType.NS) && question.Name.Equals(authorityRecord.Name, StringComparison.CurrentCultureIgnoreCase) && (authorityRecord.RDATA as DnsNSRecord).NSDomainName.Equals(response.NameServerAddress.Host, StringComparison.CurrentCultureIgnoreCase))
{
//empty response from authority name server
DnsResourceRecord record = new DnsResourceRecord(question.Name, question.Type, DnsClass.IN, DEFAULT_RECORD_TTL, new DnsEmptyRecord(null));
record.SetExpiry();
CreateZone(this, question.Name).SetRecords(question.Type, new DnsResourceRecord[] { record });
break;
}
}
}
}
}
else
{