mirror of
https://gitclone.com/github.com/MetaCubeX/Clash.Meta
synced 2024-11-15 21:51:23 +08:00
452 lines
10 KiB
Go
452 lines
10 KiB
Go
package route
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import (
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"bytes"
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"crypto/subtle"
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"crypto/tls"
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"encoding/json"
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"net"
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"net/http"
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"os"
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"path/filepath"
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"runtime/debug"
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"strings"
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"syscall"
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"time"
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"github.com/metacubex/mihomo/adapter/inbound"
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CN "github.com/metacubex/mihomo/common/net"
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"github.com/metacubex/mihomo/common/utils"
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C "github.com/metacubex/mihomo/constant"
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"github.com/metacubex/mihomo/log"
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"github.com/metacubex/mihomo/tunnel/statistic"
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"github.com/go-chi/chi/v5"
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"github.com/go-chi/chi/v5/middleware"
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"github.com/go-chi/cors"
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"github.com/go-chi/render"
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"github.com/gobwas/ws"
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"github.com/gobwas/ws/wsutil"
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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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type Memory struct {
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Inuse uint64 `json:"inuse"`
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OSLimit uint64 `json:"oslimit"` // maybe we need it in the future
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}
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func SetUIPath(path string) {
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uiPath = C.Path.Resolve(path)
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}
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func router(isDebug bool, withAuth bool, dohServer string) *chi.Mux {
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r := chi.NewRouter()
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corsM := 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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r.Use(setPrivateNetworkAccess)
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r.Use(corsM.Handler)
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if isDebug {
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r.Mount("/debug", func() http.Handler {
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r := chi.NewRouter()
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r.Put("/gc", func(w http.ResponseWriter, r *http.Request) {
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debug.FreeOSMemory()
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})
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handler := middleware.Profiler
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r.Mount("/", handler())
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return r
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}())
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}
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r.Group(func(r chi.Router) {
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if withAuth {
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r.Use(authentication)
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}
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r.Get("/", hello)
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r.Get("/logs", getLogs)
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r.Get("/traffic", traffic)
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r.Get("/memory", memory)
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r.Get("/version", version)
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r.Mount("/configs", configRouter())
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r.Mount("/proxies", proxyRouter())
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r.Mount("/group", GroupRouter())
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r.Mount("/rules", ruleRouter())
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r.Mount("/connections", connectionRouter())
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r.Mount("/providers/proxies", proxyProviderRouter())
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r.Mount("/providers/rules", ruleProviderRouter())
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r.Mount("/cache", cacheRouter())
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r.Mount("/dns", dnsRouter())
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r.Mount("/restart", restartRouter())
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r.Mount("/upgrade", upgradeRouter())
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addExternalRouters(r)
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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/", http.StatusTemporaryRedirect).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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if len(dohServer) > 0 && dohServer[0] == '/' {
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r.Mount(dohServer, dohRouter())
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}
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return r
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}
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func Start(addr string, tlsAddr string, secret string,
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certificate, privateKey string, dohServer string, isDebug bool) {
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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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if len(tlsAddr) > 0 {
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go func() {
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c, err := CN.ParseCert(certificate, privateKey, C.Path)
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if err != nil {
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log.Errorln("External controller tls listen error: %s", err)
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return
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}
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l, err := inbound.Listen("tcp", tlsAddr)
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if err != nil {
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log.Errorln("External controller tls listen error: %s", err)
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return
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}
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serverAddr = l.Addr().String()
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log.Infoln("RESTful API tls listening at: %s", serverAddr)
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tlsServe := &http.Server{
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Handler: router(isDebug, true, dohServer),
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TLSConfig: &tls.Config{
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Certificates: []tls.Certificate{c},
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},
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}
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if err = tlsServe.ServeTLS(l, "", ""); err != nil {
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log.Errorln("External controller tls serve error: %s", err)
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}
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}()
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}
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l, err := inbound.Listen("tcp", addr)
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if err != nil {
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log.Errorln("External controller listen error: %s", err)
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return
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}
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serverAddr = l.Addr().String()
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log.Infoln("RESTful API listening at: %s", serverAddr)
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if err = http.Serve(l, router(isDebug, true, dohServer)); err != nil {
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log.Errorln("External controller serve error: %s", err)
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}
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}
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func StartUnix(addr string, dohServer string, isDebug bool) {
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addr = C.Path.Resolve(addr)
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dir := filepath.Dir(addr)
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if _, err := os.Stat(dir); os.IsNotExist(err) {
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if err := os.MkdirAll(dir, 0o755); err != nil {
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log.Errorln("External controller unix listen error: %s", err)
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return
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}
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}
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// https://devblogs.microsoft.com/commandline/af_unix-comes-to-windows/
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//
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// Note: As mentioned above in the ‘security’ section, when a socket binds a socket to a valid pathname address,
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// a socket file is created within the filesystem. On Linux, the application is expected to unlink
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// (see the notes section in the man page for AF_UNIX) before any other socket can be bound to the same address.
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// The same applies to Windows unix sockets, except that, DeleteFile (or any other file delete API)
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// should be used to delete the socket file prior to calling bind with the same path.
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_ = syscall.Unlink(addr)
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l, err := inbound.Listen("unix", addr)
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if err != nil {
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log.Errorln("External controller unix listen error: %s", err)
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return
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}
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serverAddr = l.Addr().String()
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log.Infoln("RESTful API unix listening at: %s", serverAddr)
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if err = http.Serve(l, router(isDebug, false, dohServer)); err != nil {
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log.Errorln("External controller unix serve error: %s", err)
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}
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}
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func setPrivateNetworkAccess(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method == http.MethodOptions && r.Header.Get("Access-Control-Request-Method") != "" {
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w.Header().Add("Access-Control-Allow-Private-Network", "true")
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}
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next.ServeHTTP(w, r)
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})
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}
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func safeEuqal(a, b string) bool {
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aBuf := utils.ImmutableBytesFromString(a)
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bBuf := utils.ImmutableBytesFromString(b)
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return subtle.ConstantTimeCompare(aBuf, bBuf) == 1
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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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if serverSecret == "" {
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next.ServeHTTP(w, r)
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return
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}
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// Browser websocket not support custom header
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if r.Header.Get("Upgrade") == "websocket" && r.URL.Query().Get("token") != "" {
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token := r.URL.Query().Get("token")
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if !safeEuqal(token, serverSecret) {
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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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return
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}
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header := r.Header.Get("Authorization")
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bearer, token, found := strings.Cut(header, " ")
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hasInvalidHeader := bearer != "Bearer"
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hasInvalidSecret := !found || !safeEuqal(token, serverSecret)
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if hasInvalidHeader || hasInvalidSecret {
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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": "mihomo"})
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}
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func traffic(w http.ResponseWriter, r *http.Request) {
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var wsConn net.Conn
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if r.Header.Get("Upgrade") == "websocket" {
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var err error
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wsConn, _, _, err = ws.UpgradeHTTP(r, w)
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if err != nil {
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return
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}
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}
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if wsConn == nil {
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w.Header().Set("Content-Type", "application/json")
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render.Status(r, http.StatusOK)
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}
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tick := time.NewTicker(time.Second)
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defer tick.Stop()
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t := statistic.DefaultManager
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buf := &bytes.Buffer{}
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var err error
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for range tick.C {
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buf.Reset()
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up, down := t.Now()
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if err := json.NewEncoder(buf).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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if wsConn == nil {
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_, err = w.Write(buf.Bytes())
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w.(http.Flusher).Flush()
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} else {
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err = wsutil.WriteMessage(wsConn, ws.StateServerSide, ws.OpText, buf.Bytes())
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}
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if err != nil {
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break
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}
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}
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}
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func memory(w http.ResponseWriter, r *http.Request) {
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var wsConn net.Conn
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if r.Header.Get("Upgrade") == "websocket" {
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var err error
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wsConn, _, _, err = ws.UpgradeHTTP(r, w)
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if err != nil {
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return
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}
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}
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if wsConn == nil {
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w.Header().Set("Content-Type", "application/json")
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render.Status(r, http.StatusOK)
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}
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tick := time.NewTicker(time.Second)
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defer tick.Stop()
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t := statistic.DefaultManager
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buf := &bytes.Buffer{}
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var err error
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first := true
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for range tick.C {
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buf.Reset()
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inuse := t.Memory()
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// make chat.js begin with zero
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// this is shit var,but we need output 0 for first time
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if first {
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inuse = 0
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first = false
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}
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if err := json.NewEncoder(buf).Encode(Memory{
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Inuse: inuse,
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OSLimit: 0,
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}); err != nil {
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break
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}
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if wsConn == nil {
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_, err = w.Write(buf.Bytes())
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w.(http.Flusher).Flush()
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} else {
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err = wsutil.WriteMessage(wsConn, ws.StateServerSide, ws.OpText, buf.Bytes())
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}
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if err != nil {
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break
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}
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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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type LogStructuredField struct {
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Key string `json:"key"`
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Value string `json:"value"`
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}
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type LogStructured struct {
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Time string `json:"time"`
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Level string `json:"level"`
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Message string `json:"message"`
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Fields []LogStructuredField `json:"fields"`
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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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formatText := r.URL.Query().Get("format")
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isStructured := false
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if formatText == "structured" {
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isStructured = true
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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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var wsConn net.Conn
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if r.Header.Get("Upgrade") == "websocket" {
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var err error
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wsConn, _, _, err = ws.UpgradeHTTP(r, w)
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if err != nil {
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return
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}
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}
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if wsConn == nil {
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w.Header().Set("Content-Type", "application/json")
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render.Status(r, http.StatusOK)
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}
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ch := make(chan log.Event, 1024)
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sub := log.Subscribe()
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defer log.UnSubscribe(sub)
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buf := &bytes.Buffer{}
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go func() {
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for logM := range sub {
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select {
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case ch <- logM:
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default:
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}
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}
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close(ch)
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}()
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for logM := range ch {
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if logM.LogLevel < level {
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continue
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}
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buf.Reset()
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if !isStructured {
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if err := json.NewEncoder(buf).Encode(Log{
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Type: logM.Type(),
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Payload: logM.Payload,
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}); err != nil {
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break
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}
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} else {
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newLevel := logM.Type()
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if newLevel == "warning" {
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newLevel = "warn"
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}
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if err := json.NewEncoder(buf).Encode(LogStructured{
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Time: time.Now().Format(time.TimeOnly),
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Level: newLevel,
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Message: logM.Payload,
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Fields: []LogStructuredField{},
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}); err != nil {
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break
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}
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}
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var err error
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if wsConn == nil {
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_, err = w.Write(buf.Bytes())
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w.(http.Flusher).Flush()
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} else {
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err = wsutil.WriteMessage(wsConn, ws.StateServerSide, ws.OpText, buf.Bytes())
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}
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if err != nil {
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break
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}
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}
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}
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func version(w http.ResponseWriter, r *http.Request) {
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render.JSON(w, r, render.M{"meta": C.Meta, "version": C.Version})
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}
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