fix(daemon): set correct permissions on cache.db file (#5613)

Author: ddebko

internal/clientcache/internal/daemon/server.go

@@ -567,6 +567,20 @@ func defaultDbUrl(ctx context.Context, opt ...Option) (string, error) {
 		return "", errors.Wrap(ctx, err, op)
 	}
 	fileName := filepath.Join(dotDir, dbFileName)
+	if _, err := os.Stat(fileName); err != nil {
+		if !errors.Is(err, os.ErrNotExist) {
+			return "", errors.Wrap(ctx, err, op)
+		}
+		file, err := os.OpenFile(fileName, os.O_WRONLY|os.O_CREATE, 0o600)
+		if err != nil {
+			return "", errors.Wrap(ctx, err, op)
+		}
+		defer file.Close()
+	}
+	err = os.Chmod(fileName, 0o600)
+	if err != nil {
+		return "", errors.Wrap(ctx, err, op)
+	}
 	return fmt.Sprintf("%s%s", fileName, fkPragma), nil
 }