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DropRequests: updated app to support blocking entire zone of the configured qname.

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This commit is contained in:
Shreyas Zare
2022-04-30 12:00:45 +05:30
parent 279feebbbf
commit d1b528b0d6
2 changed files with 22 additions and 4 deletions
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21
Apps/DropRequestsApp/App.cs
View File

@@ -1,6 +1,6 @@
/* /*
Technitium DNS Server Technitium DNS Server
Copyright (C) 2021 Shreyas Zare (shreyas@technitium.com) Copyright (C) 2022 Shreyas Zare (shreyas@technitium.com)
This program is free software: you can redistribute it and/or modify This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by it under the terms of the GNU General Public License as published by
@@ -170,6 +170,7 @@ namespace DropRequests
#region variables #region variables
readonly string _name; readonly string _name;
readonly bool _blockZone;
readonly DnsResourceRecordType _type; readonly DnsResourceRecordType _type;
#endregion #endregion
@@ -179,6 +180,11 @@ namespace DropRequests
public BlockedQuestion(dynamic jsonQuestion) public BlockedQuestion(dynamic jsonQuestion)
{ {
_name = jsonQuestion.name?.Value; _name = jsonQuestion.name?.Value;
if (_name is not null)
_name = _name.TrimEnd('.');
if (jsonQuestion.blockZone is not null)
_blockZone = jsonQuestion.blockZone.Value;
string strType = jsonQuestion.type?.Value; string strType = jsonQuestion.type?.Value;
if (!string.IsNullOrEmpty(strType) && Enum.TryParse(strType, true, out DnsResourceRecordType type)) if (!string.IsNullOrEmpty(strType) && Enum.TryParse(strType, true, out DnsResourceRecordType type))
@@ -193,8 +199,19 @@ namespace DropRequests
public bool Matches(DnsQuestionRecord question) public bool Matches(DnsQuestionRecord question)
{ {
if ((_name is not null) && !_name.Equals(question.Name, StringComparison.OrdinalIgnoreCase)) if (_name is not null)
{
if (_blockZone)
{
if ((_name.Length > 0) && !_name.Equals(question.Name, StringComparison.OrdinalIgnoreCase) && !question.Name.EndsWith("." + _name, StringComparison.OrdinalIgnoreCase))
return false; return false;
}
else
{
if (!_name.Equals(question.Name, StringComparison.OrdinalIgnoreCase))
return false;
}
}
if ((_type != DnsResourceRecordType.Unknown) && (_type != question.Type)) if ((_type != DnsResourceRecordType.Unknown) && (_type != question.Type))
return false; return false;

3
Apps/DropRequestsApp/dnsApp.config
View File

@@ -12,7 +12,8 @@
], ],
"blockedQuestions": [ "blockedQuestions": [
{ {
"name": "example.com" "name": "example.com",
"blockZone": true
}, },
{ {
"type": "ANY" "type": "ANY"