fix: implement dirlfs to ignore symlinks

internal/shutils/helpers/dirlfs.go

@@ -0,0 +1,53 @@
+// ALR - Any Linux Repository
+// Copyright (C) 2025 The ALR Authors
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package helpers
+
+import (
+	"io/fs"
+	"os"
+	"path/filepath"
+)
+
+// dirLfs implements fs.FS like os.DirFS but uses LStat instead of Stat.
+// This means symbolic links are treated as links themselves rather than
+// being followed to their targets.
+type dirLfs struct {
+	fs.FS
+	dir string
+}
+
+func NewDirLFS(dir string) *dirLfs {
+	return &dirLfs{
+		FS:  os.DirFS(dir),
+		dir: dir,
+	}
+}
+
+func (d *dirLfs) Stat(name string) (fs.FileInfo, error) {
+	if !fs.ValidPath(name) {
+		return nil, &fs.PathError{Op: "stat", Path: name, Err: fs.ErrInvalid}
+	}
+
+	fullPath := filepath.Join(d.dir, filepath.FromSlash(name))
+
+	info, err := os.Lstat(fullPath)
+	if err != nil {
+		return nil, &fs.PathError{Op: "stat", Path: name, Err: err}
+	}
+
+	return info, nil
+}