136 lines
4.1 KiB
C#
136 lines
4.1 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;
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using System.Collections.Generic;
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using System.IO;
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using System.Net;
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using System.Net.Sockets;
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using TechnitiumLibrary.IO;
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using TechnitiumLibrary.Net;
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namespace DnsServerSystemTrayApp
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{
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public class DnsProvider : IComparable<DnsProvider>
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{
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#region variables
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public string Name;
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public ICollection<IPAddress> Addresses;
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#endregion
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#region constructor
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public DnsProvider(string name, ICollection<IPAddress> addresses)
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{
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this.Name = name;
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this.Addresses = addresses;
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}
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public DnsProvider(BinaryReader bR)
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{
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this.Name = bR.ReadShortString();
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this.Addresses = new List<IPAddress>();
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int count = bR.ReadInt32();
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for (int i = 0; i < count; i++)
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this.Addresses.Add(IPAddressExtensions.ReadFrom(bR));
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}
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#endregion
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#region static
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public static DnsProvider[] GetDefaultProviders()
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{
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return new DnsProvider[] {
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new DnsProvider("Technitium", new IPAddress[] { IPAddress.Loopback, IPAddress.IPv6Loopback }),
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new DnsProvider("Cloudflare", new IPAddress[] { IPAddress.Parse("1.1.1.1"), IPAddress.Parse("1.0.0.1"), IPAddress.Parse("[2606:4700:4700::1111]"), IPAddress.Parse("[2606:4700:4700::1001]") }),
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new DnsProvider("Google", new IPAddress[] { IPAddress.Parse("8.8.8.8"), IPAddress.Parse("8.8.4.4"), IPAddress.Parse("[2001:4860:4860::8888]"), IPAddress.Parse("[2001:4860:4860::8844]") }),
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new DnsProvider("Quad9", new IPAddress[] { IPAddress.Parse("9.9.9.9"), IPAddress.Parse("[2620:fe::fe]") }),
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new DnsProvider("OpenDNS", new IPAddress[] { IPAddress.Parse("208.67.222.222"), IPAddress.Parse("208.67.220.220"), IPAddress.Parse("[2620:0:ccc::2]"), IPAddress.Parse("[2620:0:ccd::2]") })
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};
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}
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#endregion
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#region public
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public string GetIpv4Addresses()
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{
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string ipv4Addresses = null;
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foreach (IPAddress address in Addresses)
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{
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if (address.AddressFamily == AddressFamily.InterNetwork)
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{
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if (ipv4Addresses == null)
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ipv4Addresses = address.ToString();
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else
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ipv4Addresses += ", " + address.ToString();
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}
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}
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return ipv4Addresses;
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}
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public string GetIpv6Addresses()
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{
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string ipv6Addresses = null;
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foreach (IPAddress address in Addresses)
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{
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if (address.AddressFamily == AddressFamily.InterNetworkV6)
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{
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if (ipv6Addresses == null)
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ipv6Addresses = address.ToString();
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else
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ipv6Addresses += ", " + address.ToString();
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}
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}
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return ipv6Addresses;
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}
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public override string ToString()
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{
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return Name;
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}
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public int CompareTo(DnsProvider other)
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{
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return this.Name.CompareTo(other.Name);
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}
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public void WriteTo(BinaryWriter bW)
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{
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bW.WriteShortString(Name);
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bW.Write(Addresses.Count);
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foreach (IPAddress address in Addresses)
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address.WriteTo(bW);
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}
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#endregion
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}
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}
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