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DnsServer: implemented allow txt blocking report option. Minor changes done.

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This commit is contained in:
Shreyas Zare
2021-09-25 13:43:14 +05:30
parent 407a5a19e2
commit 3abf126b8d
1 changed files with 14 additions and 3 deletions
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17
DnsServerCore/Dns/DnsServer.cs
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@@ -137,6 +137,7 @@ namespace DnsServerCore.Dns
int _cachePrefetchSampleIntervalInMinutes = 5;
int _cachePrefetchSampleEligibilityHitsPerHour = 30;
bool _enableBlocking = true;
bool _allowTxtBlockingReport = true;
DnsServerBlockingType _blockingType = DnsServerBlockingType.AnyAddress;
IReadOnlyCollection<DnsARecord> _customBlockingARecords = Array.Empty<DnsARecord>();
IReadOnlyCollection<DnsAAAARecord> _customBlockingAAAARecords = Array.Empty<DnsAAAARecord>();
@@ -1073,8 +1074,11 @@ namespace DnsServerCore.Dns
switch (request.OPCODE)
{
case DnsOpcode.StandardQuery:
if ((request.Question.Count != 1) || (request.Question[0].Class != DnsClass.IN))
return new DnsDatagram(request.Identifier, true, DnsOpcode.StandardQuery, false, false, request.RecursionDesired, isRecursionAllowed, false, false, DnsResponseCode.NotImplemented, request.Question) { Tag = DnsServerResponseType.Authoritative };
if (request.Question.Count != 1)
return new DnsDatagram(request.Identifier, true, DnsOpcode.StandardQuery, false, false, request.RecursionDesired, isRecursionAllowed, false, false, DnsResponseCode.FormatError, request.Question) { Tag = DnsServerResponseType.Authoritative };
if (request.Question[0].Class != DnsClass.IN)
return new DnsDatagram(request.Identifier, true, DnsOpcode.StandardQuery, false, false, request.RecursionDesired, isRecursionAllowed, false, false, DnsResponseCode.Refused, request.Question) { Tag = DnsServerResponseType.Authoritative };
try
{
@@ -1761,7 +1765,7 @@ namespace DnsServerCore.Dns
//domain is blocked in blocked zone
DnsQuestionRecord question = request.Question[0];
if (question.Type == DnsResourceRecordType.TXT)
if (_allowTxtBlockingReport && (question.Type == DnsResourceRecordType.TXT))
{
//return meta data
string blockedDomain;
@@ -3369,6 +3373,12 @@ namespace DnsServerCore.Dns
set { _enableBlocking = value; }
}
public bool AllowTxtBlockingReport
{
get { return _allowTxtBlockingReport; }
set { _allowTxtBlockingReport = value; }
}
public DnsServerBlockingType BlockingType
{
get { return _blockingType; }
@@ -3437,6 +3447,7 @@ namespace DnsServerCore.Dns
}
public DnsQuestionRecord SampleQuestion { get; }
public IReadOnlyList<NameServerAddress> ViaForwarders { get; }
}
}