working commit

vendor/sigs.k8s.io/kustomize/api/internal/loader/loadrestrictions.go

@@ -0,0 +1,35 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package loader
+
+import (
+	"fmt"
+
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+type LoadRestrictorFunc func(
+	filesys.FileSystem, filesys.ConfirmedDir, string) (string, error)
+
+func RestrictionRootOnly(
+	fSys filesys.FileSystem, root filesys.ConfirmedDir, path string) (string, error) {
+	d, f, err := fSys.CleanedAbs(path)
+	if err != nil {
+		return "", err
+	}
+	if f == "" {
+		return "", fmt.Errorf("'%s' must resolve to a file", path)
+	}
+	if !d.HasPrefix(root) {
+		return "", fmt.Errorf(
+			"security; file '%s' is not in or below '%s'",
+			path, root)
+	}
+	return d.Join(f), nil
+}
+
+func RestrictionNone(
+	_ filesys.FileSystem, _ filesys.ConfirmedDir, path string) (string, error) {
+	return path, nil
+}