Feature: add update GEO databases to rest api

config/updateGeo.go

@@ -0,0 +1,69 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+
+	"github.com/Dreamacro/clash/component/geodata"
+	_ "github.com/Dreamacro/clash/component/geodata/standard"
+	C "github.com/Dreamacro/clash/constant"
+
+	"github.com/oschwald/geoip2-golang"
+)
+
+func UpdateGeoDatabases() error {
+	var (
+		tmpMMDB    = C.Path.Resolve("temp_country.mmdb")
+		tmpGeoSite = C.Path.Resolve("temp_geosite.dat")
+	)
+
+	if err := downloadMMDB(tmpMMDB); err != nil {
+		return fmt.Errorf("can't download MMDB database file: %w", err)
+	}
+
+	if err := verifyMMDB(tmpMMDB); err != nil {
+		_ = os.Remove(tmpMMDB)
+		return fmt.Errorf("invalid MMDB database file, %w", err)
+	}
+
+	if err := os.Rename(tmpMMDB, C.Path.MMDB()); err != nil {
+		return fmt.Errorf("can't rename MMDB database file: %w", err)
+	}
+
+	if err := downloadGeoSite(tmpGeoSite); err != nil {
+		return fmt.Errorf("can't download GeoSite database file: %w", err)
+	}
+
+	if err := verifyGeoSite(tmpGeoSite); err != nil {
+		_ = os.Remove(tmpGeoSite)
+		return fmt.Errorf("invalid GeoSite database file, %w", err)
+	}
+
+	if err := os.Rename(tmpGeoSite, C.Path.GeoSite()); err != nil {
+		return fmt.Errorf("can't rename GeoSite database file: %w", err)
+	}
+
+	return nil
+}
+
+func verifyMMDB(path string) error {
+	instance, err := geoip2.Open(path)
+	if err == nil {
+		_ = instance.Close()
+	}
+	return err
+}
+
+func verifyGeoSite(path string) error {
+	geoLoader, err := geodata.GetGeoDataLoader("standard")
+	if err != nil {
+		return err
+	}
+
+	_, err = geoLoader.LoadSite(path, "cn")
+
+	runtime.GC()
+
+	return err
+}

hub/route/configsGeo.go

@@ -0,0 +1,64 @@
+package route
+
+import (
+	"net/http"
+	"sync"
+
+	"github.com/Dreamacro/clash/config"
+	"github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/hub/executor"
+	"github.com/Dreamacro/clash/log"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+)
+
+var (
+	updatingGeo  bool
+	updateGeoMux sync.Mutex
+)
+
+func configGeoRouter() http.Handler {
+	r := chi.NewRouter()
+	r.Post("/", updateGeoDatabases)
+	return r
+}
+
+func updateGeoDatabases(w http.ResponseWriter, r *http.Request) {
+	updateGeoMux.Lock()
+
+	if updatingGeo {
+		updateGeoMux.Unlock()
+		render.Status(r, http.StatusBadRequest)
+		render.JSON(w, r, newError("updating..."))
+		return
+	}
+
+	updatingGeo = true
+	updateGeoMux.Unlock()
+
+	go func() {
+		defer func() {
+			updatingGeo = false
+		}()
+
+		log.Warnln("[REST-API] updating GEO databases...")
+
+		if err := config.UpdateGeoDatabases(); err != nil {
+			log.Errorln("[REST-API] update GEO databases failed: %v", err)
+			return
+		}
+
+		cfg, err := executor.ParseWithPath(constant.Path.Config())
+		if err != nil {
+			log.Errorln("[REST-API] update GEO databases failed: %v", err)
+			return
+		}
+
+		log.Warnln("[REST-API] update GEO databases successful, apply config...")
+
+		executor.ApplyConfig(cfg, false)
+	}()
+
+	render.NoContent(w, r)
+}

hub/route/server.go

@@ -67,6 +67,7 @@ func Start(addr string, secret string) {
 		r.Get("/traffic", traffic)
 		r.Get("/version", version)
 		r.Mount("/configs", configRouter())
+		r.Mount("/configs/geo", configGeoRouter())
 		r.Mount("/proxies", proxyRouter())
 		r.Mount("/rules", ruleRouter())
 		r.Mount("/connections", connectionRouter())