Guard against unknown layout type

This avoids any potential segfaults when trying to draw the view. Co-authored-by: Jean-Baptiste Lallement <[email protected]>
ubuntu · Aug 9, 2023 · 8b2523c · 8b2523c
1 parent c3a8b0d
commit 8b2523c
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/pam/authorization.go b/pam/authorization.go
@@ -170,12 +170,17 @@ func (m *authorizationModel) Compose(sessionID string, layout *authd.UILayout) t
 			form.setEntryValue(oldEntryValue)
 		}
 		m.currentModel = form
+	default:
+		return sendEvent(pamSystemError{msg: fmt.Sprintf("unknown layout type: %q", layout.Type)})
 	}
 
 	return sendEvent(startAuthorization{})
 }
 
 func (m authorizationModel) View() string {
+	if m.currentModel == nil {
+		return ""
+	}
 	return lipgloss.JoinVertical(lipgloss.Left,
 		m.currentModel.View(),
 		m.errorMsg,