492 lines
16 KiB
C#
492 lines
16 KiB
C#
using System.Diagnostics;
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using System.IO.Compression;
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using System.Net;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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using System.Text.Json;
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using System.Text.Json.Nodes;
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using System.Text.RegularExpressions;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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using Proxd_man.Config;
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using Proxd_man.Config.Outbound;
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namespace Proxd_man;
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public class XrayCoreManager(
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ILogger<XrayCoreManager> logger,
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IOptionsMonitor<ProxdConfig> config)
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{
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private const string XrayLatestReleaseApiUrl = "https://api.github.com/repos/XTLS/Xray-core/releases/latest";
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private const string XrayLatestReleaseAssetDownloadUrlPrefix =
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"https://github.com/XTLS/Xray-core/releases/latest/download/";
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private string CoreProgramDir => config.CurrentValue.XrayCoreProgramDirectory;
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private string WorkingDirectory => config.CurrentValue.XrayCoreWorkingDirectory;
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// TODO: 看看注册订阅更新事件后, 需要进行哪些操作.
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public string GetXrayCoreProgramPath()
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return CoreProgramDir + "/xray.exe";
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}
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return CoreProgramDir + "/xray";
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}
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public string GetXrayCoreProgramDownloadUrl()
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{
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string os;
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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var osVersion = Environment.OSVersion.Version;
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switch (osVersion.Major)
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{
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case < 6:
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case 6 when osVersion.Minor < 1:
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throw new Exception("Windows 7 or later is required.");
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case 6 when osVersion.Minor == 1:
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os = "win7";
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break;
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default:
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os = "windows";
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break;
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}
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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os = "linux";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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os = "macos";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD))
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{
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os = "freebsd";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Create("openbsd")))
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{
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os = "openbsd";
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}
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else
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{
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throw new Exception("Unsupported operating system.");
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}
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string arch;
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if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
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{
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arch = "64";
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}
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else if (RuntimeInformation.ProcessArchitecture == Architecture.X86)
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{
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arch = "32";
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}
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else if (RuntimeInformation.ProcessArchitecture == Architecture.Arm)
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{
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arch = "arm32-v7a";
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}
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else if (RuntimeInformation.ProcessArchitecture == Architecture.Arm64)
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{
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arch = "arm64-v8a";
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}
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else if (RuntimeInformation.ProcessArchitecture == Architecture.Armv6)
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{
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arch = "arm32-v6";
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}
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else
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{
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throw new Exception("Unsupported architecture.");
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}
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return $"{XrayLatestReleaseAssetDownloadUrlPrefix}Xray-{os}-{arch}.zip";
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}
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private Process CreateXrayCoreProcess(string args, bool redirectOutput = true)
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{
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var programPath = GetXrayCoreProgramPath();
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if (!File.Exists(programPath))
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{
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throw new Exception("Xray-Core program not found: " + programPath);
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}
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if (!Directory.Exists(WorkingDirectory))
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{
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Directory.CreateDirectory(WorkingDirectory);
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}
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return new Process
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{
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StartInfo = new ProcessStartInfo
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{
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FileName = programPath,
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Arguments = args,
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RedirectStandardOutput = redirectOutput,
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UseShellExecute = false,
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CreateNoWindow = true,
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WorkingDirectory = WorkingDirectory
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}
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};
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}
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/// <summary>
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/// 获取目前已安装的 Xray Core 版本.
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/// </summary>
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/// <returns>如果已安装了 Xray Core 则返回对应的版本号, 否则返回 null.</returns>
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private async Task<string?> GetCurrentXrayCoreVersion()
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{
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// 检查平台, 如果是 Linux, 则检查 coreProgramDir + "/xray", 如果是 Windows, 则检查 coreProgramDir + "/xray.exe"
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var xrayCoreProgramPath = GetXrayCoreProgramPath();
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if (!File.Exists(xrayCoreProgramPath))
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{
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return null;
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}
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var process = CreateXrayCoreProcess("--version");
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process.Start();
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await process.WaitForExitAsync();
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var output = (await process.StandardOutput.ReadToEndAsync()).Trim();
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var versionMatch = Regex.Match(output, @"Xray (\d+\.\d+\.\d+)");
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return versionMatch.Success ? versionMatch.Groups[1].Value : null;
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}
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public async Task<string> GetLatestXrayCoreVersion()
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{
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using var client = new HttpClient();
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client.DefaultRequestHeaders.Add("User-Agent", "XrayCoreManager");
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var response = await client.GetAsync(XrayLatestReleaseApiUrl);
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if (response.StatusCode != HttpStatusCode.OK)
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{
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throw new Exception("Failed to get latest Xray Core version.");
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}
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using var content = await JsonDocument.ParseAsync(await response.Content.ReadAsStreamAsync());
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var root = content.RootElement;
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if (!root.TryGetProperty("tag_name", out var tagNameElement))
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{
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throw new Exception("Failed to get latest Xray Core version.");
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}
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var tagName = tagNameElement.GetString() ?? throw new Exception("Failed to get latest Xray Core version.");
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return tagName.StartsWith('v') ? tagName[1..] : tagName;
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}
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public async Task FetchXrayCoreProgram()
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{
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if (!Directory.Exists(CoreProgramDir))
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{
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Directory.CreateDirectory(CoreProgramDir);
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}
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var programArchiveUrl = GetXrayCoreProgramDownloadUrl();
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var programArchiveDigestUrl = programArchiveUrl + ".dgst";
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logger.LogDebug("Xray-Core 下载地址: {programArchiveUrl}", programArchiveUrl);
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logger.LogDebug("Xray-Core 下载地址 (Digest): {programArchiveDigestUrl}", programArchiveDigestUrl);
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var tempArchiveFile = Path.GetTempFileName();
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using var httpClient = new HttpClient();
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logger.LogDebug("正在下载 Xray-Core...");
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await using var archiveStream = await httpClient.GetStreamAsync(programArchiveUrl);
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await using (var programArchiveFileStream = new FileStream(tempArchiveFile, FileMode.Create, FileAccess.Write))
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{
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await archiveStream.CopyToAsync(programArchiveFileStream);
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}
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logger.LogDebug("正在获取 SHA-256 Digest...");
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var digests = await httpClient.GetStringAsync(programArchiveDigestUrl);
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logger.LogDebug("可用的 Digests: \n{digests}", digests);
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// digests 每行都有一个不同算法的 digest HEX 值, 因此从 digests 读出开头为 SHA-256= 的行, 并提取出其右侧的 Sha256 值
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var sha256Digest =
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digests.Split('\n').FirstOrDefault(line => line.StartsWith("SHA2-256="))?["SHA2-256=".Length..]
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?.Trim();
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if (sha256Digest == null)
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{
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throw new Exception("Failed to get SHA-256 digest.");
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}
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logger.LogDebug("SHA-256 Digest: {sha256Digest}", sha256Digest);
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// Verify digest
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using var sha256 = SHA256.Create();
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await using (var localArchiveFileStream = new FileStream(tempArchiveFile, FileMode.Open, FileAccess.Read))
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{
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var localDigest = await sha256.ComputeHashAsync(localArchiveFileStream);
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var localDigestHex = BitConverter.ToString(localDigest).Replace("-", "").ToLower();
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logger.LogDebug("本地 SHA-256 Digest: {localDigest}", localDigestHex);
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if (localDigestHex != sha256Digest)
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{
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throw new Exception("SHA-256 digest mismatch.");
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}
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logger.LogDebug("SHA-256 Digest 验证通过.");
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}
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ZipFile.ExtractToDirectory(tempArchiveFile, CoreProgramDir, true);
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// Set permissions
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
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RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD))
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{
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await Process.Start("chmod", "+x " + GetXrayCoreProgramPath()).WaitForExitAsync();
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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await Process.Start("chmod", "+x " + GetXrayCoreProgramPath()).WaitForExitAsync();
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}
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File.Delete(tempArchiveFile);
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}
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public async Task InitialXrayCoreProgram()
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{
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logger.LogInformation("正在检查 Xray-Core 安装情况以及版本...");
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var currentVersion = await GetCurrentXrayCoreVersion();
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logger.LogDebug("当前 Xray-Core 版本: {currentVersion}", currentVersion);
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var requiredUpdate = false;
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if (currentVersion == null)
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{
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requiredUpdate = true;
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logger.LogInformation("未找到 Xray-Core, 开始下载最新版本...");
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}
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else
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{
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var latestXrayCoreVersion = await GetLatestXrayCoreVersion();
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if (currentVersion != latestXrayCoreVersion)
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{
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requiredUpdate = true;
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logger.LogInformation("发现新版本 Xray-Core (Version: {latestVersion}), 开始下载最新版本...",
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latestXrayCoreVersion);
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}
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}
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if (requiredUpdate)
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{
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await FetchXrayCoreProgram();
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logger.LogInformation("Xray-Core 更新完成.");
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}
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else
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{
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logger.LogInformation("Xray-Core 已是最新版本, 无需更新.");
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}
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}
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public async Task<bool> VerifyXrayCoreConfigFile(string configFilePath)
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{
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var process = CreateXrayCoreProcess($"run -test -config {configFilePath}");
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process.Start();
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await process.WaitForExitAsync();
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return process.ExitCode == 0;
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}
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/// <summary>
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/// 生成最终的 Xray-Core 配置 JSON 对象.
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///
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/// 注意, 在 Xray-Core 中, Inbound 和 Outbound 的首位配置很重要.
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/// </summary>
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/// <param name="inboundConfigs">配置使用的入站设置.</param>
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/// <param name="outboundSetting">该配置使用的出站配置.</param>
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/// <param name="onlyTest"></param>
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/// <returns></returns>
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public JsonObject GenerateXrayCoreConfigJson(List<IInboundSetting> inboundConfigs,
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BaseOutboundSetting outboundSetting, bool onlyTest = false)
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{
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// 基本的设置.
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var proxyConfig = new JsonObject
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{
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{
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"log", new JsonObject
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{
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{ "loglevel", "warning" }
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}
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},
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{
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"policy", new JsonObject
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{
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{
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"levels", new JsonObject
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{
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// 给 DNS 使用的.
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{
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"1", new JsonObject
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{
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{ "connIdle", 30 }
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}
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}
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}
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},
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{
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"system", new JsonObject
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{
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{ "statsOutboundDownlink", true },
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{ "statsOutboundUplink", true }
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}
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}
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}
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},
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{ "stats", new JsonObject() }
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};
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// ------------- DNS 配置 -------------
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var directResolveDomains = new JsonArray();
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var localDnsServer = new JsonObject
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{
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{ "address", "localhost" },
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{ "domains", directResolveDomains },
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{ "queryStrategy", "" }
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};
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if (!onlyTest)
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{
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directResolveDomains.Add("geosite:cn");
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}
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// 如果不是一个 IP 地址(v4 或 v6)，则添加到 DNS 服务器列表中
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if (!IPAddress.TryParse(outboundSetting.Address, out _))
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{
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directResolveDomains.Add($"full:{outboundSetting.Address}");
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}
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var dnsServers = new JsonArray(new JsonObject
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{
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{ "address", config.CurrentValue.RemoteDnsServer },
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{ "domains", new JsonArray() },
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{ "queryStrategy", "" }
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}, localDnsServer);
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proxyConfig.Add("dns", new JsonObject
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{
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{ "disableFallback", true },
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{ "servers", dnsServers }
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});
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// ------------- DNS 配置 ↑ -------------
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// ------------ Inbound 配置 ------------
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var inbounds = new JsonArray();
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proxyConfig.Add("inbounds", inbounds);
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foreach (var inboundConfig in inboundConfigs)
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{
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inbounds.Add(inboundConfig.ToJsonSetting());
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}
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// ------------ Inbound 配置 ↑ ------------
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var outbounds = new JsonArray();
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proxyConfig.Add("outbounds", outbounds);
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var proxyOutboundSettings = outboundSetting.ToJsonSetting();
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proxyOutboundSettings.Add("domainStrategy", "AsIs");
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outbounds.Add(proxyOutboundSettings);
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outbounds.Add(new FreedomOutboundSetting("bypass")
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{
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Name = "bypass"
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}.ToJsonSetting());
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outbounds.Add(new FreedomOutboundSetting
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{
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Name = "direct"
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}.ToJsonSetting());
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outbounds.Add(new BlackholeOutboundSetting
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{
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Name = "block"
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}.ToJsonSetting());
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// 添加 DNS 出站配置, 要求 DNS 走 Proxy 代理出站.
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outbounds.Add(new JsonObject
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{
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{ "protocol", "dns" },
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{ "tag", "dns-out" },
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{
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"settings", new JsonObject
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{
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{ "address", "1.1.1.1" },
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{ "port", 53 },
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{ "network", "tcp" },
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{ "userLevel", 1 }
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}
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},
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{
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"proxySettings", new JsonObject
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{
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{ "tag", outboundSetting.GetTag() },
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{ "transportLayer", true }
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}
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}
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});
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// ------------ Outbound 配置 ------------
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// ------------ Routing 配置 -------------
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var routingSettings = new JsonObject
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{
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{ "domainStrategy", "AsIs" }
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};
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proxyConfig.Add("routing", routingSettings);
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var inboundTags = new JsonArray();
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foreach (var inboundConfig in inboundConfigs)
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{
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inboundTags.Add(inboundConfig.GetTag());
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}
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var rules = new JsonArray(new JsonObject
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{
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{ "inboundTag", inboundTags },
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{ "outboundTag", "dns-out" },
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{ "type", "field" },
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{ "port", "53" }
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})
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{
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new JsonObject
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{
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{ "ip", new JsonArray("geoip:cn", "geoip:private") },
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{ "outboundTag", "bypass" },
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{ "type", "field" },
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},
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new JsonObject
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{
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{ "domain", new JsonArray("geosite:cn") },
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{ "outboundTag", "bypass" },
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{ "type", "field" },
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},
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new JsonObject
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{
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{ "outboundTag", "proxy" },
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{ "port", "0-65535" },
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{ "type", "field" },
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}
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};
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routingSettings.Add("rules", rules);
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return proxyConfig;
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}
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public Process CreateOutboundTestProcess(ushort inboundHttpPort, BaseOutboundSetting outboundSetting)
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{
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var configJson = GenerateXrayCoreConfigJson([
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new HttpInboundSetting
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{
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Port = inboundHttpPort
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}
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], outboundSetting, true);
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var configFilePath = Path.Combine(Path.Combine(WorkingDirectory, "test-config"), Path.GetRandomFileName() + ".json");
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using var configFileStream = File.CreateText(configFilePath);
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configFileStream.Write(JsonSerializer.Serialize(configJson));
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return CreateXrayCoreProcess($"run -config {configFilePath}");
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}
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} |