public function is_uploading_allowed()
{
if (!isset($this->uploading_allowed)) {
require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
require_once WP_Installer()->plugin_path() . '/includes/installer-upgrader-skins.php';
$upgrader_skins = new Installer_Upgrader_Skins();
//use our custom (mute) Skin
$upgrader = new Plugin_Upgrader($upgrader_skins);
ob_start();
$res = $upgrader->fs_connect(array(WP_CONTENT_DIR, WP_PLUGIN_DIR));
ob_end_clean();
if (!$res || is_wp_error($res)) {
$this->uploading_allowed = false;
} else {
$this->uploading_allowed = true;
}
}
return $this->uploading_allowed;
}
