48 lines
2.2 KiB
C#
48 lines
2.2 KiB
C#
/*
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Technitium DNS Server
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Copyright (C) 2023 Shreyas Zare (shreyas@technitium.com)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System.Net;
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using System.Threading.Tasks;
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using TechnitiumLibrary.Net.Dns;
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namespace DnsServerCore.ApplicationCommon
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{
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/// <summary>
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/// Lets DNS Apps provide DNS level domain name blocking feature.
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/// </summary>
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public interface IDnsRequestBlockingHandler
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{
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/// <summary>
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/// Specifies if the query domain name in the incoming DNS request is allowed to bypass any configured block lists (including for DNS server's built-in blocking feature).
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/// </summary>
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/// <param name="request">The incoming DNS request to be processed.</param>
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/// <param name="remoteEP">The end point (IP address and port) of the client making the request.</param>
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/// <returns>Returns <c>true</c> if the query domain name in the incoming DNS request is allowed to bypass blocking.</returns>
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Task<bool> IsAllowedAsync(DnsDatagram request, IPEndPoint remoteEP);
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/// <summary>
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/// Specifies if the query domain name in the incoming DNS request is blocked based on the app's own configured block lists.
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/// </summary>
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/// <param name="request">The incoming DNS request to be processed.</param>
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/// <param name="remoteEP">The end point (IP address and port) of the client making the request.</param>
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/// <returns>The blocked DNS response for the DNS request or <c>null</c> to let the DNS server core process the request as usual.</returns>
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Task<DnsDatagram> ProcessRequestAsync(DnsDatagram request, IPEndPoint remoteEP);
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}
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}
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