refactor(code): Cleaned-up the code base

lib/boxstore/paths.go

@@ -0,0 +1,79 @@
+package boxstore
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"warpbox/lib/helpers"
+)
+
+const manifestFile = ".warpbox.json"
+
+var uploadRoot = filepath.Join("data", "uploads")
+
+func NewBoxID() (string, error) {
+	return helpers.RandomHexID(16)
+}
+
+func ValidBoxID(boxID string) bool {
+	return helpers.ValidLowerHexID(boxID, 32)
+}
+func SetUploadRoot(path string) {
+	if path == "" {
+		return
+	}
+	uploadRoot = filepath.Clean(path)
+}
+func UploadRoot() string {
+	return uploadRoot
+}
+
+func BoxPath(boxID string) string {
+	return filepath.Join(uploadRoot, boxID)
+}
+
+func safeBoxPath(boxID string) (string, bool) {
+	if !ValidBoxID(boxID) {
+		return "", false
+	}
+	return helpers.SafeChildPath(uploadRoot, boxID)
+}
+
+func ManifestPath(boxID string) string {
+	return filepath.Join(BoxPath(boxID), manifestFile)
+}
+
+func SafeBoxFilePath(boxID string, filename string) (string, bool) {
+	boxPath, ok := safeBoxPath(boxID)
+	if !ok {
+		return "", false
+	}
+	return helpers.SafeChildPath(boxPath, filename)
+}
+
+func IsSafeRegularBoxFile(boxID string, filename string) bool {
+	path, ok := SafeBoxFilePath(boxID, filename)
+	if !ok {
+		return false
+	}
+	return ensureRegularFile(path) == nil
+}
+
+func DeleteBox(boxID string) error {
+	boxPath, ok := safeBoxPath(boxID)
+	if !ok {
+		return fmt.Errorf("Invalid box id")
+	}
+	return os.RemoveAll(boxPath)
+}
+func ensureRegularFile(path string) error {
+	info, err := os.Lstat(path)
+	if err != nil {
+		return err
+	}
+	if info.Mode()&os.ModeSymlink != 0 || !info.Mode().IsRegular() {
+		return fmt.Errorf("Invalid file")
+	}
+	return nil
+}