166 lines
3.4 KiB
Go
166 lines
3.4 KiB
Go
package route
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import (
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"encoding/json"
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"net/http"
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"strings"
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"time"
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"github.com/Dreamacro/clash/log"
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T "github.com/Dreamacro/clash/tunnel"
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"github.com/go-chi/chi"
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"github.com/go-chi/cors"
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"github.com/go-chi/render"
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)
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var (
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serverSecret = ""
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serverAddr = ""
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uiPath = ""
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)
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type Traffic struct {
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Up int64 `json:"up"`
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Down int64 `json:"down"`
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}
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func SetUIPath(path string) {
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uiPath = path
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}
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func Start(addr string, secret string) {
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if serverAddr != "" {
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return
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}
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serverAddr = addr
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serverSecret = secret
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r := chi.NewRouter()
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cors := cors.New(cors.Options{
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AllowedOrigins: []string{"*"},
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AllowedMethods: []string{"GET", "POST", "PUT", "PATCH", "DELETE"},
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AllowedHeaders: []string{"Content-Type", "Authorization"},
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MaxAge: 300,
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})
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root := chi.NewRouter().With(jsonContentType)
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root.Get("/traffic", traffic)
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root.Get("/logs", getLogs)
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r.Get("/", hello)
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r.Group(func(r chi.Router) {
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r.Use(cors.Handler, authentication)
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r.Mount("/", root)
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r.Mount("/configs", configRouter())
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r.Mount("/proxies", proxyRouter())
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r.Mount("/rules", ruleRouter())
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})
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if uiPath != "" {
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r.Group(func(r chi.Router) {
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fs := http.StripPrefix("/ui", http.FileServer(http.Dir(uiPath)))
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r.Get("/ui", http.RedirectHandler("/ui/", 301).ServeHTTP)
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r.Get("/ui/*", func(w http.ResponseWriter, r *http.Request) {
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fs.ServeHTTP(w, r)
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})
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})
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}
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log.Infoln("RESTful API listening at: %s", addr)
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err := http.ListenAndServe(addr, r)
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if err != nil {
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log.Errorln("External controller error: %s", err.Error())
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}
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}
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func jsonContentType(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/json")
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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func authentication(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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header := r.Header.Get("Authorization")
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text := strings.SplitN(header, " ", 2)
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if serverSecret == "" {
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next.ServeHTTP(w, r)
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return
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}
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hasUnvalidHeader := text[0] != "Bearer"
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hasUnvalidSecret := len(text) == 2 && text[1] != serverSecret
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if hasUnvalidHeader || hasUnvalidSecret {
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render.Status(r, http.StatusUnauthorized)
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render.JSON(w, r, ErrUnauthorized)
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return
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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func hello(w http.ResponseWriter, r *http.Request) {
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render.JSON(w, r, render.M{"hello": "clash"})
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}
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func traffic(w http.ResponseWriter, r *http.Request) {
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render.Status(r, http.StatusOK)
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tick := time.NewTicker(time.Second)
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t := T.Instance().Traffic()
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for range tick.C {
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up, down := t.Now()
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if err := json.NewEncoder(w).Encode(Traffic{
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Up: up,
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Down: down,
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}); err != nil {
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break
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}
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w.(http.Flusher).Flush()
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}
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}
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type Log struct {
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Type string `json:"type"`
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Payload string `json:"payload"`
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}
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func getLogs(w http.ResponseWriter, r *http.Request) {
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levelText := r.URL.Query().Get("level")
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if levelText == "" {
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levelText = "info"
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}
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level, ok := log.LogLevelMapping[levelText]
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if !ok {
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render.Status(r, http.StatusBadRequest)
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render.JSON(w, r, ErrBadRequest)
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return
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}
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sub := log.Subscribe()
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render.Status(r, http.StatusOK)
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for elm := range sub {
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log := elm.(*log.Event)
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if log.LogLevel < level {
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continue
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}
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if err := json.NewEncoder(w).Encode(Log{
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Type: log.Type(),
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Payload: log.Payload,
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}); err != nil {
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break
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}
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w.(http.Flusher).Flush()
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}
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}
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