495 lines
11 KiB
Go
495 lines
11 KiB
Go
package web
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import (
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"context"
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"crypto/tls"
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"embed"
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"html/template"
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"io"
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"io/fs"
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"net"
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"net/http"
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"os"
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"strconv"
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"strings"
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"time"
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"x-ui/config"
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"x-ui/logger"
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"x-ui/util/common"
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"x-ui/web/controller"
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"x-ui/web/job"
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"x-ui/web/locale"
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"x-ui/web/middleware"
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"x-ui/web/network"
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"x-ui/web/service"
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"github.com/gin-contrib/gzip"
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"github.com/gin-contrib/sessions"
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"github.com/gin-contrib/sessions/cookie"
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"github.com/gin-gonic/gin"
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"github.com/robfig/cron/v3"
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)
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//go:embed assets/*
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var assetsFS embed.FS
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//go:embed html/*
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var htmlFS embed.FS
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//go:embed translation/*
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var i18nFS embed.FS
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var startTime = time.Now()
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// 预定义 IPv4 私网和回环网段
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var privateIPv4Nets []*net.IPNet
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type wrapAssetsFS struct {
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embed.FS
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}
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func (f *wrapAssetsFS) Open(name string) (fs.File, error) {
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file, err := f.FS.Open("assets/" + name)
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if err != nil {
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return nil, err
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}
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return &wrapAssetsFile{
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File: file,
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}, nil
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}
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type wrapAssetsFile struct {
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fs.File
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}
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func (f *wrapAssetsFile) Stat() (fs.FileInfo, error) {
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info, err := f.File.Stat()
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if err != nil {
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return nil, err
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}
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return &wrapAssetsFileInfo{
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FileInfo: info,
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}, nil
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}
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type wrapAssetsFileInfo struct {
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fs.FileInfo
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}
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func (f *wrapAssetsFileInfo) ModTime() time.Time {
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return startTime
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}
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type Server struct {
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httpServer *http.Server
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listener net.Listener
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index *controller.IndexController
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server *controller.ServerController
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panel *controller.XUIController
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api *controller.APIController
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xrayService service.XrayService
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settingService service.SettingService
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tgbotService service.Tgbot
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cron *cron.Cron
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ctx context.Context
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cancel context.CancelFunc
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}
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func NewServer() *Server {
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ctx, cancel := context.WithCancel(context.Background())
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return &Server{
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ctx: ctx,
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cancel: cancel,
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}
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}
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func (s *Server) getHtmlFiles() ([]string, error) {
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files := make([]string, 0)
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dir, _ := os.Getwd()
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err := fs.WalkDir(os.DirFS(dir), "web/html", func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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files = append(files, path)
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return nil
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})
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if err != nil {
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return nil, err
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}
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return files, nil
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}
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func (s *Server) getHtmlTemplate(funcMap template.FuncMap) (*template.Template, error) {
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// 这里用 htmlFS（//go:embed html/*）而不是“templates”
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t := template.New("").Funcs(funcMap)
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// 递归遍历 embed 的 html 目录，解析所有 .html 模板
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err := fs.WalkDir(htmlFS, "html", func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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if !strings.HasSuffix(path, ".html") {
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return nil
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}
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// 读出模板内容
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b, err := htmlFS.ReadFile(path)
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if err != nil {
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return err
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}
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// 去掉前缀“html/”，让 {{template "form/inbound"}} 这种名字能被正确找到
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name := strings.TrimPrefix(path, "html/")
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_, err = t.New(name).Parse(string(b))
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return err
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})
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if err != nil {
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return nil, err
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}
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return t, nil
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}
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func (s *Server) initRouter() (*gin.Engine, error) {
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if config.IsDebug() {
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gin.SetMode(gin.DebugMode)
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} else {
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gin.DefaultWriter = io.Discard
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gin.DefaultErrorWriter = io.Discard
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gin.SetMode(gin.ReleaseMode)
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}
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engine := gin.Default()
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webDomain, err := s.settingService.GetWebDomain()
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if err != nil {
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return nil, err
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}
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if webDomain != "" {
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engine.Use(middleware.DomainValidatorMiddleware(webDomain))
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}
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secret, err := s.settingService.GetSecret()
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if err != nil {
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return nil, err
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}
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basePath, err := s.settingService.GetBasePath()
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if err != nil {
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return nil, err
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}
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engine.Use(gzip.Gzip(gzip.DefaultCompression, gzip.WithExcludedPaths([]string{basePath + "panel/API/"})))
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assetsBasePath := basePath + "assets/"
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store := cookie.NewStore(secret)
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engine.Use(sessions.Sessions("3x-ui", store))
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engine.Use(func(c *gin.Context) {
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c.Set("base_path", basePath)
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})
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engine.Use(func(c *gin.Context) {
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uri := c.Request.RequestURI
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if strings.HasPrefix(uri, assetsBasePath) {
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c.Header("Cache-Control", "max-age=31536000")
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}
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})
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// init i18n
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err = locale.InitLocalizer(i18nFS, &s.settingService)
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if err != nil {
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return nil, err
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}
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// Apply locale middleware for i18n
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i18nWebFunc := func(key string, params ...string) string {
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return locale.I18n(locale.Web, key, params...)
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}
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engine.FuncMap["i18n"] = i18nWebFunc
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engine.Use(locale.LocalizerMiddleware())
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// set static files and template
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if config.IsDebug() {
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// for development
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files, err := s.getHtmlFiles()
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if err != nil {
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return nil, err
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}
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engine.LoadHTMLFiles(files...)
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engine.StaticFS(basePath+"assets", http.FS(os.DirFS("web/assets")))
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} else {
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// for production
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template, err := s.getHtmlTemplate(engine.FuncMap)
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if err != nil {
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return nil, err
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}
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engine.SetHTMLTemplate(template)
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engine.StaticFS(basePath+"assets", http.FS(&wrapAssetsFS{FS: assetsFS}))
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}
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// Apply the redirect middleware (`/xui` to `/panel`)
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engine.Use(middleware.RedirectMiddleware(basePath))
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g := engine.Group(basePath)
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s.index = controller.NewIndexController(g)
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s.server = controller.NewServerController(g)
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s.panel = controller.NewXUIController(g)
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s.api = controller.NewAPIController(g)
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return engine, nil
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}
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func (s *Server) startTask() {
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err := s.xrayService.RestartXray(true)
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if err != nil {
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logger.Warning("start xray failed:", err)
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}
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// Check whether xray is running every second
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s.cron.AddJob("@every 1s", job.NewCheckXrayRunningJob())
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// Check if xray needs to be restarted every 30 seconds
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s.cron.AddFunc("@every 30s", func() {
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if s.xrayService.IsNeedRestartAndSetFalse() {
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err := s.xrayService.RestartXray(false)
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if err != nil {
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logger.Error("restart xray failed:", err)
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}
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}
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})
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go func() {
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time.Sleep(time.Second * 5)
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// Statistics every 10 seconds, start the delay for 5 seconds for the first time, and staggered with the time to restart xray
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s.cron.AddJob("@every 10s", job.NewXrayTrafficJob())
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}()
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// check client ips from log file every 10 sec
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s.cron.AddJob("@every 10s", job.NewCheckClientIpJob())
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// check client ips from log file every day
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s.cron.AddJob("@daily", job.NewClearLogsJob())
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// Make a traffic condition every day, 8:30
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var entry cron.EntryID
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isTgbotenabled, err := s.settingService.GetTgbotEnabled()
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if (err == nil) && (isTgbotenabled) {
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runtime, err := s.settingService.GetTgbotRuntime()
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if err != nil || runtime == "" {
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logger.Errorf("Add NewStatsNotifyJob error[%s], Runtime[%s] invalid, will run default", err, runtime)
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runtime = "@daily"
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}
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logger.Infof("Tg notify enabled,run at %s", runtime)
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_, err = s.cron.AddJob(runtime, job.NewStatsNotifyJob())
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if err != nil {
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logger.Warning("Add NewStatsNotifyJob error", err)
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return
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}
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// check for Telegram bot callback query hash storage reset
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s.cron.AddJob("@every 2m", job.NewCheckHashStorageJob())
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// Check CPU load and alarm to TgBot if threshold passes
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cpuThreshold, err := s.settingService.GetTgCpu()
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if (err == nil) && (cpuThreshold > 0) {
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s.cron.AddJob("@every 10s", job.NewCheckCpuJob())
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}
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} else {
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s.cron.Remove(entry)
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}
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}
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func (s *Server) Start() (err error) {
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// This is an anonymous function, no function name
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defer func() {
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if err != nil {
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s.Stop()
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}
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}()
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loc, err := s.settingService.GetTimeLocation()
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if err != nil {
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return err
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}
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s.cron = cron.New(cron.WithLocation(loc), cron.WithSeconds())
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s.cron.Start()
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engine, err := s.initRouter()
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if err != nil {
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return err
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}
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certFile, err := s.settingService.GetCertFile()
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if err != nil {
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return err
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}
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keyFile, err := s.settingService.GetKeyFile()
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if err != nil {
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return err
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}
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listen, err := s.settingService.GetListen()
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if err != nil {
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return err
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}
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port, err := s.settingService.GetPort()
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if err != nil {
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return err
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}
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var listenAddr string
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if certFile != "" && keyFile != "" {
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// 方式一：配置了证书，启用 HTTPS
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// 检查证书是否有效，如果无效则直接报错退出，不允许回退到 HTTP
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_, err := tls.LoadX509KeyPair(certFile, keyFile)
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if err != nil {
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logger.Errorf("Error loading certificates, please check the file path and content: %v", err)
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return err
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}
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// 监听用户配置的地址
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listenAddr = net.JoinHostPort(listen, strconv.Itoa(port))
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} else {
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// 方式二：未配置证书，强制监听在本地回环地址，仅供 SSH 转发使用
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logger.Info("No certificate configured. Forcing listen address to localhost for security.")
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logger.Info("Access is only possible via SSH tunnel (e.g., http://127.0.0.1).")
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// 无论用户在 listen 中填写什么，都强制使用回环地址
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listen = fallbackToLocalhost(listen)
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listenAddr = net.JoinHostPort(listen, strconv.Itoa(port))
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}
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listener, err := net.Listen("tcp", listenAddr)
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if err != nil {
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return err
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}
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// 再次检查证书，配置 TLS Listener
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if certFile != "" && keyFile != "" {
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cert, _ := tls.LoadX509KeyPair(certFile, keyFile) // 这里我们忽略错误，因为上面已经检查过了
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c := &tls.Config{
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Certificates: []tls.Certificate{cert},
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}
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listener = network.NewAutoHttpsListener(listener)
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listener = tls.NewListener(listener, c)
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logger.Info("Web server running HTTPS on", listener.Addr())
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} else {
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logger.Info("Web server running HTTP on", listener.Addr())
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}
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s.listener = listener
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s.httpServer = &http.Server{
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Handler: engine,
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}
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go func() {
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s.httpServer.Serve(listener)
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}()
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s.startTask()
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isTgbotenabled, err := s.settingService.GetTgbotEnabled()
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if (err == nil) && (isTgbotenabled) {
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tgBot := s.tgbotService.NewTgbot()
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tgBot.Start(i18nFS)
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}
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return nil
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}
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func (s *Server) Stop() error {
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s.cancel()
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s.xrayService.StopXray()
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if s.cron != nil {
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s.cron.Stop()
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}
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if s.tgbotService.IsRunning() {
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s.tgbotService.Stop()
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}
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var err1 error
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var err2 error
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if s.httpServer != nil {
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err1 = s.httpServer.Shutdown(s.ctx)
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}
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if s.listener != nil {
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err2 = s.listener.Close()
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}
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return common.Combine(err1, err2)
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}
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func (s *Server) GetCtx() context.Context {
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return s.ctx
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}
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func (s *Server) GetCron() *cron.Cron {
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return s.cron
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}
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// isInternalIP 判断是否为私网或回环IP（支持IPv4和IPv6）
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func isInternalIP(ipStr string) bool {
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ip := net.ParseIP(ipStr)
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if ip == nil {
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return false
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}
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if ip4 := ip.To4(); ip4 != nil {
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// IPv4 判断是否在私网/回环网段内
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for _, privateNet := range privateIPv4Nets {
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if privateNet.Contains(ip4) {
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return true
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}
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}
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return false
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}
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// IPv6 判断回环或链路本地地址
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if ip.IsLoopback() || ip.IsLinkLocalUnicast() {
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return true
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}
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// 判断 IPv6 fc00::/7 私网地址段
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if ip[0]&0xfe == 0xfc {
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return true
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}
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return false
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}
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// fallbackToLocalhost 根据传入地址返回对应的本地回环地址
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func fallbackToLocalhost(listen string) string {
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ip := net.ParseIP(listen)
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if ip == nil {
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// 无法解析则默认回退 IPv4 回环
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return "127.0.0.1"
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}
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if ip.To4() != nil {
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// IPv4 回退 IPv4 回环
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return "127.0.0.1"
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}
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// IPv6 回退 IPv6 回环
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return "::1"
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}
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func init() {
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for _, cidr := range []string{
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"10.0.0.0/8", // A类私网
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"172.16.0.0/12", // B类私网
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"192.168.0.0/16", // C类私网
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"100.64.0.0/10", // CGNAT地址段
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"127.0.0.0/8", // 回环
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} {
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_, netw, err := net.ParseCIDR(cidr)
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if err == nil {
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privateIPv4Nets = append(privateIPv4Nets, netw)
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}
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}
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}
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