fix: ensure urls isn't encoded (#618)

Former-commit-id: 51ba15f84c

backend/app/api/handlers/v1/v1_ctrl_qrcode.go

@@ -5,6 +5,7 @@ import (
 	"image/png"
 	"io"
 	"net/http"
+	"net/url"
 
 	"github.com/hay-kot/homebox/backend/internal/web/adapters"
 	"github.com/hay-kot/httpkit/errchain"
@@ -43,7 +44,12 @@ func (ctrl *V1Controller) HandleGenerateQRCode() errchain.HandlerFunc {
 			panic(err)
 		}
 
-		qrc, err := qrcode.New(q.Data)
+		decodedStr, err := url.QueryUnescape(q.Data)
+		if err != nil {
+			return err
+		}
+
+		qrc, err := qrcode.New(decodedStr)
 		if err != nil {
 			return err
 		}