UserEnvironment.preSudo constructor

UserEnvironment.preSudo({ required String pathToHome, })

Creates a UserEnvironment from the SUDO env args that describe the pre-sudo user.

Implementation

UserEnvironment.preSudo({required this.pathToHome}) {
  // get the details of the user, pre-sudo starting.
  final sUID = env['SUDO_UID'];
  final gUID = env['SUDO_GID'];

  // convert id's to integers.
  gid = gUID != null ? int.tryParse(gUID) ?? 0 : 0;
  uid = sUID != null ? int.tryParse(sUID) ?? 0 : 0;

  // CONSIDER: throw an exception if we can't determine the opre-sudo
  // user?
  username = env['SUDO_USER'] ?? env['USER'] ?? '';

  pathToShell = env['SHELL'];

  final inheritedRuntimeDirectory = env['XDG_RUNTIME_DIR'];
  final standardRuntimeDirectory = '/run/user/$uid';
  if (Platform.isLinux &&
      (inheritedRuntimeDirectory == null ||
          inheritedRuntimeDirectory.isEmpty ||
          (inheritedRuntimeDirectory.startsWith('/run/user/') &&
              inheritedRuntimeDirectory != standardRuntimeDirectory))) {
    pathToXdgRuntimeDirectory = standardRuntimeDirectory;
  } else {
    pathToXdgRuntimeDirectory = inheritedRuntimeDirectory;
  }

  final inheritedSessionBus = env['DBUS_SESSION_BUS_ADDRESS'];
  if (Platform.isLinux &&
      (inheritedSessionBus == null ||
          inheritedSessionBus.isEmpty ||
          (inheritedSessionBus.contains('path=/run/user/') &&
              !inheritedSessionBus.contains(
                'path=$standardRuntimeDirectory/',
              )))) {
    dbusSessionBusAddress = 'unix:path=$pathToXdgRuntimeDirectory/bus';
  } else {
    dbusSessionBusAddress = inheritedSessionBus;
  }
}