62 lines
2.0 KiB
C#
62 lines
2.0 KiB
C#
using System;
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using System.Net.NetworkInformation;
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using System.Runtime.InteropServices;
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using System.Net;
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using System.Net.Sockets;
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namespace SBRL.Utilities
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{
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public static class NetTools
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{
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/// <summary>
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/// case-insensitively gets the IPv4 index of the network interface with the given name.
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/// </summary>
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/// <param name="interfaceName">The interface name to search for.</param>
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/// <returns>The IPv4 index of the network interface with the given name.</returns>
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public static int GetNetworkIndexByName4(string targetInterfaceName)
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{
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NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
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foreach (NetworkInterface nic in nics)
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{
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Console.WriteLine("Id: {0}, Description: {1}", nic.Id, nic.Description);
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if (nic.Id == targetInterfaceName)
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return nic.GetIPv4Index();
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}
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throw new Exception($"Error: Can't find network interface with the name {targetInterfaceName}.");
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}
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/// <summary>
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/// Gets the NetworkInterface with the given IP address.
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/// </summary>
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/// <param name="targetIP">The target IP to search for.</param>
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/// <returns>The network index with the given IP address.</returns>
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public static int GetNetworkIndexByIP(IPAddress targetIP)
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{
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NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
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foreach(NetworkInterface nic in nics)
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{
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IPInterfaceProperties ipProps = nic.GetIPProperties();
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foreach(UnicastIPAddressInformation ip in ipProps.UnicastAddresses)
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{
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// Only bother with external addresses
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if (ip.Address.AddressFamily != AddressFamily.InterNetwork)
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continue;
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if (ip.Address == targetIP)
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{
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IPv4InterfaceProperties ip4Props = ipProps.GetIPv4Properties();
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return ip4Props.Index;
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}
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}
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}
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}
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public static int GetIPv4Index(this NetworkInterface nic)
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{
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IPInterfaceProperties ipProps = nic.GetIPProperties();
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IPv4InterfaceProperties ip4Props = ipProps.GetIPv4Properties();
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return ip4Props.Index;
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}
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}
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}
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