Fix geosite:ru rule (Normalization to RU vs lowercase ru) (#3971)

* Fix geosite:ru rule (Normalization to RU vs lowercase ru)

* fix

web/service/server.go

@@ -34,6 +34,8 @@ import (
 	"github.com/shirou/gopsutil/v4/load"
 	"github.com/shirou/gopsutil/v4/mem"
 	"github.com/shirou/gopsutil/v4/net"
+	"github.com/xtls/xray-core/app/router"
+	"google.golang.org/protobuf/proto"
 )
 
 // ProcessState represents the current state of a system process.
@@ -1055,6 +1057,48 @@ func (s *ServerService) IsValidGeofileName(filename string) bool {
 	return matched
 }
 
+// NormalizeGeositeCountryCodes reads a geosite .dat file, uppercases all
+// country_code fields, and writes it back. This works around a case-sensitivity
+// mismatch in Xray-core: the router normalizes codes to uppercase before lookup,
+// but the find() function compares bytes case-sensitively. Some geosite.dat
+// providers (e.g. Loyalsoldier) store codes in lowercase, causing lookup failures.
+func NormalizeGeositeCountryCodes(path string) error {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return fmt.Errorf("failed to read geosite file %s: %w", path, err)
+	}
+
+	var list router.GeoSiteList
+	if err := proto.Unmarshal(data, &list); err != nil {
+		return fmt.Errorf("failed to parse geosite file %s: %w", path, err)
+	}
+
+	changed := false
+	for _, entry := range list.Entry {
+		upper := strings.ToUpper(entry.CountryCode)
+		if entry.CountryCode != upper {
+			entry.CountryCode = upper
+			changed = true
+		}
+	}
+
+	if !changed {
+		return nil
+	}
+
+	normalized, err := proto.Marshal(&list)
+	if err != nil {
+		return fmt.Errorf("failed to serialize normalized geosite file %s: %w", path, err)
+	}
+
+	if err := os.WriteFile(path, normalized, 0o644); err != nil {
+		return fmt.Errorf("failed to write normalized geosite file %s: %w", path, err)
+	}
+
+	logger.Infof("Normalized country codes to uppercase in %s (%d entries)", path, len(list.Entry))
+	return nil
+}
+
 func (s *ServerService) UpdateGeofile(fileName string) error {
 	type geofileEntry struct {
 		URL      string
@@ -1146,12 +1190,22 @@ func (s *ServerService) UpdateGeofile(fileName string) error {
 
 	var errorMessages []string
 
+	normalizeIfGeosite := func(destPath, name string) {
+		if strings.Contains(name, "geosite") {
+			if err := NormalizeGeositeCountryCodes(destPath); err != nil {
+				logger.Warningf("Failed to normalize geosite country codes in %s: %v", name, err)
+			}
+		}
+	}
+
 	if fileName == "" {
 		// Download all geofiles
 		for _, entry := range geofileAllowlist {
 			destPath := filepath.Join(config.GetBinFolderPath(), entry.FileName)
 			if err := downloadFile(entry.URL, destPath); err != nil {
 				errorMessages = append(errorMessages, fmt.Sprintf("Error downloading Geofile '%s': %v", entry.FileName, err))
+			} else {
+				normalizeIfGeosite(destPath, entry.FileName)
 			}
 		}
 	} else {
@@ -1159,6 +1213,8 @@ func (s *ServerService) UpdateGeofile(fileName string) error {
 		destPath := filepath.Join(config.GetBinFolderPath(), entry.FileName)
 		if err := downloadFile(entry.URL, destPath); err != nil {
 			errorMessages = append(errorMessages, fmt.Sprintf("Error downloading Geofile '%s': %v", entry.FileName, err))
+		} else {
+			normalizeIfGeosite(destPath, entry.FileName)
 		}
 	}