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DnsServer: ProcessRecursiveQuery() fixed additional record in response to work only for MX requests.

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This commit is contained in:
Shreyas Zare
2019-05-05 18:16:25 +05:30
parent c8079728b6
commit 3ec2152f52
1 changed files with 13 additions and 2 deletions
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15
DnsServerCore/DnsServer.cs
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@@ -1072,6 +1072,7 @@ namespace DnsServerCore
DnsDatagram response = RecursiveResolve(request, viaNameServers, false, cacheRefreshOperation);
DnsResourceRecord[] authority;
DnsResourceRecord[] additional;
if ((response.Header.RCODE == DnsResponseCode.NoError) && (response.Answer.Length > 0))
{
@@ -1117,7 +1118,12 @@ namespace DnsServerCore
else
authority = new DnsResourceRecord[] { };
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, true, true, false, false, lastResponse.Header.RCODE, 1, (ushort)responseAnswer.Count, (ushort)authority.Length, lastResponse.Header.ARCOUNT), request.Question, responseAnswer.ToArray(), authority, lastResponse.Additional) { Tag = (cacheHit ? "cacheHit" : null) };
if ((response.Additional.Length > 0) && (request.Question[0].Type == DnsResourceRecordType.MX))
additional = response.Additional;
else
additional = new DnsResourceRecord[] { };
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, true, true, false, false, lastResponse.Header.RCODE, 1, (ushort)responseAnswer.Count, (ushort)authority.Length, (ushort)additional.Length), request.Question, responseAnswer.ToArray(), authority, additional) { Tag = (cacheHit ? "cacheHit" : null) };
}
}
@@ -1126,7 +1132,12 @@ namespace DnsServerCore
else
authority = new DnsResourceRecord[] { };
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, true, true, false, false, response.Header.RCODE, 1, (ushort)response.Answer.Length, (ushort)authority.Length, response.Header.ARCOUNT), request.Question, response.Answer, authority, response.Additional) { Tag = response.Tag };
if ((response.Additional.Length > 0) && (request.Question[0].Type == DnsResourceRecordType.MX))
additional = response.Additional;
else
additional = new DnsResourceRecord[] { };
return new DnsDatagram(new DnsHeader(request.Header.Identifier, true, DnsOpcode.StandardQuery, false, false, true, true, false, false, response.Header.RCODE, 1, (ushort)response.Answer.Length, (ushort)authority.Length, (ushort)additional.Length), request.Question, response.Answer, authority, additional) { Tag = response.Tag };
}
private DnsDatagram RecursiveResolve(DnsDatagram request, NameServerAddress[] viaNameServers, bool cachePrefetchOperation, bool cacheRefreshOperation)