Airship\Cabin\Bridge\Landing\Admin::saveSettings PHP Method

    protected function saveSettings(array $post = []) : bool
    {
        $filterName = '\\Airship\\Cabin\\' . CABIN_NAME . '\\AirshipFilter';
        if (\class_exists($filterName)) {
            $filter = new $filterName();
            $post = $filter($post);
        }
        $twigEnv = \Airship\configWriter(ROOT . '/config/templates');
        $csp = [];
        foreach ($post['content_security_policy'] as $dir => $rules) {
            if ($dir === 'upgrade-insecure-requests') {
                continue;
            }
            if (empty($rules['allow'])) {
                $csp[$dir]['allow'] = [];
            } else {
                $csp[$dir]['allow'] = [];
                foreach ($rules['allow'] as $url) {
                    if (!empty($url) && \is_string($url)) {
                        $csp[$dir]['allow'][] = $url;
                    }
                }
            }
            if (isset($rules['disable-security'])) {
                $csp[$dir]['allow'][] = '*';
            }
            if ($dir === 'script-src') {
                $csp[$dir]['unsafe-inline'] = !empty($rules['unsafe-inline']);
                $csp[$dir]['unsafe-eval'] = !empty($rules['unsafe-eval']);
            } elseif ($dir === 'style-src') {
                $csp[$dir]['unsafe-inline'] = !empty($rules['unsafe-inline']);
            } elseif ($dir !== 'plugin-types') {
                $csp[$dir]['self'] = !empty($rules['self']);
                $csp[$dir]['data'] = !empty($rules['data']);
            }
        }
        $csp['upgrade-insecure-requests'] = !empty($post['content_security_policy']['upgrade-insecure-requests']);
        if (isset($csp['inherit'])) {
            unset($csp['inherit']);
        }
        if ($post['universal']['ledger']['driver'] === 'database') {
            if (empty($post['universal']['ledger']['table'])) {
                // Table name must be provided.
                return false;
            }
        }
        // Save CSP
        \Airship\saveJSON(ROOT . '/config/content_security_policy.json', $csp);
        if (empty($post['universal']['guest_groups'])) {
            $post['universal']['guest_groups'] = [];
        } else {
            foreach ($post['universal']['guest_groups'] as $i => $g) {
                $post['universal']['guest_groups'][$i] = (int) $g;
            }
        }
        // Save universal config
        return \file_put_contents(ROOT . '/config/universal.json', $twigEnv->render('universal.twig', ['universal' => $post['universal']])) !== false;
    }