clash/hub/route/server.go
2018-11-21 13:47:46 +08:00

141 lines
2.9 KiB
Go

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