99 lines
3.0 KiB
C#
99 lines
3.0 KiB
C#
using Microsoft.Extensions.Logging;
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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.Linq;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Threading.Tasks;
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namespace FastGithub.Dns
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{
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/// <summary>
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/// host文件配置验证器
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/// </summary>
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sealed class HostsFileValidator
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{
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private readonly FastGithubConfig fastGithubConfig;
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private readonly ILogger<HostsFileValidator> logger;
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/// <summary>
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/// host文件配置验证器
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/// </summary>
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/// <param name="fastGithubConfig"></param>
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/// <param name="logger"></param>
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public HostsFileValidator(
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FastGithubConfig fastGithubConfig,
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ILogger<HostsFileValidator> logger)
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{
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this.fastGithubConfig = fastGithubConfig;
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this.logger = logger;
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}
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/// <summary>
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/// 验证host文件的域名解析配置
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/// </summary>
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/// <returns></returns>
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public async Task ValidateAsync()
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{
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var hostsPath = @"/etc/hosts";
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if (OperatingSystem.IsWindows())
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{
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hostsPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), $"drivers/{hostsPath}");
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}
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if (File.Exists(hostsPath) == false)
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{
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return;
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}
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var lines = await File.ReadAllLinesAsync(hostsPath);
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var records = lines.Where(item => item.TrimStart().StartsWith("#") == false);
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var localAddresses = GetLocalMachineIPAddress().ToArray();
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foreach (var record in records)
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{
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var items = record.Split(' ', StringSplitOptions.RemoveEmptyEntries);
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if (items.Length < 2)
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{
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continue;
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}
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if (IPAddress.TryParse(items[0], out var address) == false)
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{
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continue;
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}
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if (localAddresses.Contains(address))
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{
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continue;
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}
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var domain = items[1];
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if (this.fastGithubConfig.IsMatch(domain))
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{
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this.logger.LogWarning($"由于你的hosts文件设置了[{domain}->{address}]，{nameof(FastGithub)}无法加速此域名");
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}
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}
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}
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/// <summary>
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/// 获取本机所有ip
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/// </summary>
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/// <returns></returns>
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private static IEnumerable<IPAddress> GetLocalMachineIPAddress()
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{
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yield return IPAddress.Loopback;
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yield return IPAddress.IPv6Loopback;
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foreach (var @interface in NetworkInterface.GetAllNetworkInterfaces())
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{
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foreach (var addressInfo in @interface.GetIPProperties().UnicastAddresses)
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{
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yield return addressInfo.Address;
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}
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}
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}
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}
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}
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