尝试修复对2022的兼容性

service/xboard/service.go

@@ -29,13 +29,24 @@ func fixSSKey(key string, length int) string {
 	if key == "" {
 		return ""
 	}
-	// Try to decode as-is first
+	// If it's already a valid Base64 of the correct length, use it directly (as a B64 key)
 	if data, err := base64.StdEncoding.DecodeString(key); err == nil && len(data) == length {
 		return key
 	}
-	// Use SHA256 to derive a fixed-length key from the password
-	hash := sha256.Sum256([]byte(key))
-	return base64.StdEncoding.EncodeToString(hash[:length])
+	
+	// Legacy repetition/truncation logic for raw string keys (common in Xboard/V2board)
+	password := key
+	if len(password) > length {
+		password = password[:length]
+	}
+	for len(password) < length {
+		password += password
+	}
+	// Re-truncate after repetition
+	password = password[:length]
+	
+	// Convert to Base64 so sing-box treats it as a raw byte key
+	return base64.StdEncoding.EncodeToString([]byte(password))
 }
 
 func RegisterService(registry *boxService.Registry) {
@@ -406,6 +417,17 @@ func (s *Service) fetchConfig() (*XNodeConfig, error) {
 		return nil, err
 	}
 	defer resp.Body.Close()
+
+	// Check time drift
+	if dateStr := resp.Header.Get("Date"); dateStr != "" {
+		if panelTime, err := http.ParseTime(dateStr); err == nil {
+			drift := time.Since(panelTime)
+			if drift < 0 { drift = -drift }
+			if drift > 30*time.Second {
+				s.logger.Error("CRITICAL TIME DRIFT: ", drift, " off from Panel. SS 2022 WILL FAIL. Sync your time!")
+			}
+		}
+	}
 	
 	if resp.StatusCode != 200 {
 		respBody, _ := io.ReadAll(resp.Body)