def _checkStoreConnectivity(self):
        """ check for connectivity to the snap store to install snaps"""
        res = False
        snap_env = os.environ.copy()
        snap_env["LANG"] = "C.UTF-8"
        connected = Popen(["snap", "debug", "connectivity"], stdout=PIPE,
                          stderr=PIPE, env=snap_env,
                          universal_newlines=True).communicate()
        if re.search("^ \* PASS", connected[0], re.MULTILINE):
            return
        # can't connect
        elif re.search("^ \*.*unreachable", connected[0], re.MULTILINE):
            logging.error("No snap store connectivity")
            res = self._view.askYesNoQuestion(
                _("Connection to Snap Store failed"),
                _("Your system does not have a connection to the Snap "
                  "Store. For the best upgrade experience make sure "
                  "that your system can connect to api.snapcraft.io.\n"
                  "Do you still want to continue with the upgrade?")
            )
        # debug command not available
        elif 'error: unknown command' in connected[1]:
            logging.error("snap debug command not available")
            res = self._view.askYesNoQuestion(
                _("Outdated snapd package"),
                _("Your system does not have the latest version of snapd. "
                  "Please update the version of snapd on your system to "
                  "improve the upgrade experience.\n"
                  "Do you still want to continue with the upgrade?")
            )
        # not running as root
        elif 'error: access denied' in connected[1]:
            res = False
            logging.error("Not running as root!")
        if not res:
            self.controller.abort()