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