feat: filebrowser with encfs

settings/dir.go

@@ -0,0 +1,54 @@
+package settings
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"regexp"
+	"strings"
+
+	"github.com/spf13/afero"
+)
+
+var (
+	invalidFilenameChars = regexp.MustCompile(`[^0-9A-Za-z@_\-.]`)
+
+	dashes = regexp.MustCompile(`[\-]+`)
+)
+
+// MakeUserDir makes the user directory according to settings.
+func (s *Settings) MakeUserDir(username, userScope, serverRoot string) (string, error) {
+	userScope = strings.TrimSpace(userScope)
+	if userScope == "" && s.CreateUserDir {
+		username = cleanUsername(username)
+		if username == "" || username == "-" || username == "." {
+			log.Printf("create user: invalid user for home dir creation: [%s]", username)
+			return "", errors.New("invalid user for home dir creation")
+		}
+		userScope = path.Join(s.UserHomeBasePath, username)
+	}
+
+	userScope = path.Join("/", userScope)
+
+	log.Println("Make user dir:", userScope, userScope, serverRoot)
+	fs := afero.NewBasePathFs(afero.NewOsFs(), serverRoot)
+	if err := fs.MkdirAll(userScope, os.ModePerm); err != nil {
+		return "", fmt.Errorf("failed to create user home dir: [%s]: %w", userScope, err)
+	}
+	return userScope, nil
+}
+
+func cleanUsername(s string) string {
+	// Remove any trailing space to avoid ending on -
+	s = strings.Trim(s, " ")
+	s = strings.Replace(s, "..", "", -1)
+
+	// Replace all characters which not in the list `0-9A-Za-z@_\-.` with a dash
+	s = invalidFilenameChars.ReplaceAllString(s, "-")
+
+	// Remove any multiple dashes caused by replacements above
+	s = dashes.ReplaceAllString(s, "-")
+	return s
+}