feat: download/upgrade XD to external-ui

config/update_geo.go

@@ -0,0 +1,68 @@
+package config
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/Dreamacro/clash/component/geodata"
+	_ "github.com/Dreamacro/clash/component/geodata/standard"
+	C "github.com/Dreamacro/clash/constant"
+
+	"github.com/oschwald/maxminddb-golang"
+)
+
+func UpdateGeoDatabases() error {
+	defer runtime.GC()
+	geoLoader, err := geodata.GetGeoDataLoader("standard")
+	if err != nil {
+		return err
+	}
+
+	if C.GeodataMode {
+		data, err := downloadForBytes(C.GeoIpUrl)
+		if err != nil {
+			return fmt.Errorf("can't download GeoIP database file: %w", err)
+		}
+
+		if _, err = geoLoader.LoadIPByBytes(data, "cn"); err != nil {
+			return fmt.Errorf("invalid GeoIP database file: %s", err)
+		}
+
+		if saveFile(data, C.Path.GeoIP()) != nil {
+			return fmt.Errorf("can't save GeoIP database file: %w", err)
+		}
+
+	} else {
+		data, err := downloadForBytes(C.MmdbUrl)
+		if err != nil {
+			return fmt.Errorf("can't download MMDB database file: %w", err)
+		}
+
+		instance, err := maxminddb.FromBytes(data)
+		if err != nil {
+			return fmt.Errorf("invalid MMDB database file: %s", err)
+		}
+		_ = instance.Close()
+
+		if saveFile(data, C.Path.MMDB()) != nil {
+			return fmt.Errorf("can't save MMDB database file: %w", err)
+		}
+	}
+
+	data, err := downloadForBytes(C.GeoSiteUrl)
+	if err != nil {
+		return fmt.Errorf("can't download GeoSite database file: %w", err)
+	}
+
+	if _, err = geoLoader.LoadSiteByBytes(data, "cn"); err != nil {
+		return fmt.Errorf("invalid GeoSite database file: %s", err)
+	}
+
+	if saveFile(data, C.Path.GeoSite()) != nil {
+		return fmt.Errorf("can't save GeoSite database file: %w", err)
+	}
+
+	geodata.ClearCache()
+
+	return nil
+}