public function rollback($plugin, $args = array())
 {
     $defaults = array('clear_update_cache' => true);
     $parsed_args = wp_parse_args($args, $defaults);
     $this->init();
     $this->upgrade_strings();
     // TODO: Add final check to make sure plugin exists
     if (0) {
         $this->skin->before();
         $this->skin->set_result(false);
         $this->skin->error('up_to_date');
         $this->skin->after();
         return false;
     }
     $plugin_slug = $this->skin->plugin;
     $plugin_version = $this->skin->options['version'];
     $download_endpoint = 'https://downloads.wordpress.org/plugin/';
     $url = $download_endpoint . $plugin_slug . '.' . $plugin_version . '.zip';
     add_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'), 10, 2);
     add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);
     $this->run(array('package' => $url, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('plugin' => $plugin, 'type' => 'plugin', 'action' => 'update')));
     // Cleanup our hooks, in case something else does a upgrade on this connection.
     remove_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'));
     remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));
     if (!$this->result || is_wp_error($this->result)) {
         return $this->result;
     }
     // Force refresh of plugin update information
     wp_clean_plugins_cache($parsed_args['clear_update_cache']);
     return true;
 }

 public static function updateFromZip($fileRaw, $updateInfo)
 {
     N2Loader::import('libraries.zip.zip_read');
     $tmpHandle = tmpfile();
     fwrite($tmpHandle, $fileRaw);
     $metaData = stream_get_meta_data($tmpHandle);
     $tmpFilename = $metaData['uri'];
     $_GET['plugins'] = $updateInfo['plugin'];
     include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
     $upgrader = new Plugin_Upgrader(new Plugin_Upgrader_Skin(compact('title', 'nonce', 'url', 'plugin')));
     $upgrader->init();
     $upgrader->upgrade_strings();
     add_filter('upgrader_pre_install', array($upgrader, 'deactivate_plugin_before_upgrade'), 10, 2);
     add_filter('upgrader_clear_destination', array($upgrader, 'delete_old_plugin'), 10, 4);
     $upgrader->run(array('package' => $tmpFilename, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('plugin' => $updateInfo['plugin'], 'type' => 'plugin', 'action' => 'update')));
     // Cleanup our hooks, in case something else does a upgrade on this connection.
     remove_filter('upgrader_pre_install', array($upgrader, 'deactivate_plugin_before_upgrade'));
     remove_filter('upgrader_clear_destination', array($upgrader, 'delete_old_plugin'));
     // Force refresh of plugin update information
     wp_clean_plugins_cache(true);
     fclose($tmpHandle);
     include ABSPATH . 'wp-admin/admin-footer.php';
     return true;
 }

 public function languages_page()
 {
     // prepare the list of tabs
     $tabs = array('lang' => __('Languages', 'polylang'));
     // only if at least one language has been created
     if ($listlanguages = $this->model->get_languages_list()) {
         $tabs['strings'] = __('Strings translation', 'polylang');
         $tabs['settings'] = __('Settings', 'polylang');
     }
     // allows plugins to add tabs
     $tabs = apply_filters('pll_settings_tabs', $tabs);
     switch ($this->active_tab) {
         case 'lang':
             // prepare the list table of languages
             $list_table = new PLL_Table_Languages();
             $list_table->prepare_items($listlanguages);
             break;
         case 'strings':
             // get the strings to translate
             $data = PLL_Admin_Strings::get_strings();
             // get the groups
             foreach ($data as $key => $row) {
                 $groups[] = $row['context'];
             }
             $groups = array_unique($groups);
             $selected = empty($_GET['group']) || !in_array($_GET['group'], $groups) ? -1 : $_GET['group'];
             $s = empty($_GET['s']) ? '' : wp_unslash($_GET['s']);
             // filter for search string
             foreach ($data as $key => $row) {
                 if (-1 != $selected && $row['context'] != $selected || !empty($s) && stripos($row['name'], $s) === false && stripos($row['string'], $s) === false) {
                     unset($data[$key]);
                 }
             }
             // load translations
             foreach ($listlanguages as $language) {
                 // filters by language if requested
                 if (($lg = get_user_meta(get_current_user_id(), 'pll_filter_content', true)) && $language->slug != $lg) {
                     continue;
                 }
                 $mo = new PLL_MO();
                 $mo->import_from_db($language);
                 foreach ($data as $key => $row) {
                     $data[$key]['translations'][$language->slug] = $mo->translate($row['string']);
                     $data[$key]['row'] = $key;
                     // store the row number for convenience
                 }
             }
             // get an array with language slugs as keys, names as values
             $languages = array_combine(wp_list_pluck($listlanguages, 'slug'), wp_list_pluck($listlanguages, 'name'));
             $string_table = new PLL_Table_String(compact('languages', 'groups', 'selected'));
             $string_table->prepare_items($data);
             break;
         case 'settings':
             $post_types = get_post_types(array('public' => true, '_builtin' => false));
             $post_types = array_diff($post_types, get_post_types(array('_pll' => true)));
             $post_types = array_unique(apply_filters('pll_get_post_types', $post_types, true));
             $taxonomies = get_taxonomies(array('public' => true, '_builtin' => false));
             $taxonomies = array_diff($taxonomies, get_taxonomies(array('_pll' => true)));
             $taxonomies = array_unique(apply_filters('pll_get_taxonomies', $taxonomies, true));
             break;
     }
     $action = isset($_REQUEST['pll_action']) ? $_REQUEST['pll_action'] : '';
     switch ($action) {
         case 'add':
             check_admin_referer('add-lang', '_wpnonce_add-lang');
             if ($this->model->add_language($_POST) && 'en_US' != $_POST['locale']) {
                 // attempts to install the language pack
                 require_once ABSPATH . 'wp-admin/includes/translation-install.php';
                 if (!wp_download_language_pack($_POST['locale'])) {
                     add_settings_error('general', 'pll_download_mo', __('The language was created, but the WordPress language file was not downloaded. Please install it manually.', 'polylang'));
                 }
                 // force checking for themes and plugins translations updates
                 wp_clean_themes_cache();
                 wp_clean_plugins_cache();
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'delete':
             check_admin_referer('delete-lang');
             if (!empty($_GET['lang'])) {
                 $this->model->delete_language((int) $_GET['lang']);
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'edit':
             if (!empty($_GET['lang'])) {
                 $edit_lang = $this->model->get_language((int) $_GET['lang']);
             }
             break;
         case 'update':
             check_admin_referer('add-lang', '_wpnonce_add-lang');
             $error = $this->model->update_language($_POST);
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'default-lang':
             check_admin_referer('default-lang');
             if ($lang = $this->model->get_language((int) $_GET['lang'])) {
//.........这里部分代码省略.........

 function wp_install_plugins($array)
 {
     require_once $this->data['dir'] . '/wp-admin/includes/class-wp-upgrader.php';
     global $WPQI_Installer_Skin;
     $WPQI_Installer_Skin();
     foreach ($array as $name) {
         if (!$name) {
             continue;
         }
         $is_url = preg_match("/^(http|https):\\/\\//i", $name);
         $url = $is_url ? $name : "https://downloads.wordpress.org/plugin/{$name}.zip";
         $upgrader = new Plugin_Upgrader(new WPQI_Installer_Skin());
         $upgrader->install($url);
         activate_plugin($upgrader->plugin_info());
     }
     wp_clean_plugins_cache();
 }

 function update_translations()
 {
     include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
     // Clear the cache.
     wp_clean_plugins_cache();
     ob_start();
     wp_update_plugins();
     // Check for Plugin updates
     ob_end_clean();
     $available_updates = get_site_transient('update_plugins');
     if (!isset($available_updates->translations) || empty($available_updates->translations)) {
         return new WP_Error('nothing_to_translate');
     }
     $update_attempted = false;
     $result = false;
     foreach ($this->plugins as $plugin) {
         $this->slug = Jetpack_Autoupdate::get_plugin_slug($plugin);
         $translation = array_filter($available_updates->translations, array($this, 'get_translation'));
         if (empty($translation)) {
             $this->log[$plugin][] = __('No update needed', 'jetpack');
             continue;
         }
         /**
          * Pre-upgrade action
          *
          * @since 4.4
          *
          * @param array $plugin Plugin data
          * @param array $plugin Array of plugin objects
          * @param bool $updated_attempted false for the first update, true subsequently
          */
         do_action('jetpack_pre_plugin_upgrade_translations', $plugin, $this->plugins, $update_attempted);
         $update_attempted = true;
         $skin = new Automatic_Upgrader_Skin();
         $upgrader = new Language_Pack_Upgrader($skin);
         $upgrader->init();
         $result = $upgrader->upgrade((object) $translation[0]);
         $this->log[$plugin] = $upgrader->skin->get_upgrade_messages();
     }
     if (!$this->bulk && !$result) {
         return new WP_Error('update_fail', __('There was an error updating your plugin', 'jetpack'), 400);
     }
     return true;
 }

 /**
  * Install a plugin from .org in the background via a cron job (used by
  * installer - opt in).
  * @param string $plugin_to_install_id
  * @param array $plugin_to_install
  * @since 2.6.0
  */
 public static function background_installer($plugin_to_install_id, $plugin_to_install)
 {
     if (!empty($plugin_to_install['repo-slug'])) {
         require_once ABSPATH . 'wp-admin/includes/file.php';
         require_once ABSPATH . 'wp-admin/includes/plugin-install.php';
         require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
         require_once ABSPATH . 'wp-admin/includes/plugin.php';
         WP_Filesystem();
         $skin = new Automatic_Upgrader_Skin();
         $upgrader = new WP_Upgrader($skin);
         $installed_plugins = array_map(array(__CLASS__, 'format_plugin_slug'), array_keys(get_plugins()));
         $plugin_slug = $plugin_to_install['repo-slug'];
         $plugin = $plugin_slug . '/' . $plugin_slug . '.php';
         $installed = false;
         $activate = false;
         // See if the plugin is installed already
         if (in_array($plugin_to_install['repo-slug'], $installed_plugins)) {
             $installed = true;
             $activate = !is_plugin_active($plugin);
         }
         // Install this thing!
         if (!$installed) {
             // Suppress feedback
             ob_start();
             try {
                 $plugin_information = plugins_api('plugin_information', array('slug' => $plugin_to_install['repo-slug'], 'fields' => array('short_description' => false, 'sections' => false, 'requires' => false, 'rating' => false, 'ratings' => false, 'downloaded' => false, 'last_updated' => false, 'added' => false, 'tags' => false, 'homepage' => false, 'donate_link' => false, 'author_profile' => false, 'author' => false)));
                 if (is_wp_error($plugin_information)) {
                     throw new Exception($plugin_information->get_error_message());
                 }
                 $package = $plugin_information->download_link;
                 $download = $upgrader->download_package($package);
                 if (is_wp_error($download)) {
                     throw new Exception($download->get_error_message());
                 }
                 $working_dir = $upgrader->unpack_package($download, true);
                 if (is_wp_error($working_dir)) {
                     throw new Exception($working_dir->get_error_message());
                 }
                 $result = $upgrader->install_package(array('source' => $working_dir, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => false, 'abort_if_destination_exists' => false, 'clear_working' => true, 'hook_extra' => array('type' => 'plugin', 'action' => 'install')));
                 if (is_wp_error($result)) {
                     throw new Exception($result->get_error_message());
                 }
                 $activate = true;
             } catch (Exception $e) {
                 WC_Admin_Notices::add_custom_notice($plugin_to_install_id . '_install_error', sprintf(__('%1$s could not be installed (%2$s). <a href="%3$s">Please install it manually by clicking here.</a>', 'woocommerce'), $plugin_to_install['name'], $e->getMessage(), esc_url(admin_url('index.php?wc-install-plugin-redirect=' . $plugin_to_install['repo-slug']))));
             }
             // Discard feedback
             ob_end_clean();
         }
         wp_clean_plugins_cache();
         // Activate this thing
         if ($activate) {
             try {
                 $result = activate_plugin($plugin);
                 if (is_wp_error($result)) {
                     throw new Exception($result->get_error_message());
                 }
             } catch (Exception $e) {
                 WC_Admin_Notices::add_custom_notice($plugin_to_install_id . '_install_error', sprintf(__('%1$s was installed but could not be activated. <a href="%2$s">Please activate it manually by clicking here.</a>', 'woocommerce'), $plugin_to_install['name'], admin_url('plugins.php')));
             }
         }
     }
 }

 protected function update()
 {
     wp_clean_plugins_cache();
     ob_start();
     wp_update_plugins();
     // Check for Plugin updates
     ob_end_clean();
     $update_plugins = get_site_transient('update_plugins');
     if (isset($update_plugins->response)) {
         $plugin_updates_needed = array_keys($update_plugins->response);
     } else {
         $plugin_updates_needed = array();
     }
     $update_attempted = false;
     include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
     // unhook this functions that output things before we send our response header.
     remove_action('upgrader_process_complete', array('Language_Pack_Upgrader', 'async_upgrade'), 20);
     remove_action('upgrader_process_complete', 'wp_version_check');
     remove_action('upgrader_process_complete', 'wp_update_themes');
     $result = false;
     foreach ($this->plugins as $plugin) {
         if (!in_array($plugin, $plugin_updates_needed)) {
             $this->log[$plugin][] = __('No update needed', 'jetpack');
             continue;
         }
         /**
          * Pre-upgrade action
          * 
          * @since 3.9.3
          * 
          * @param array $plugin Plugin data
          * @param array $plugin Array of plugin objects
          * @param bool $updated_attempted false for the first update, true subsequently
          */
         do_action('jetpack_pre_plugin_upgrade', $plugin, $this->plugins, $update_attempted);
         $update_attempted = true;
         // Object created inside the for loop to clean the messages for each plugin
         $skin = new Automatic_Upgrader_Skin();
         // The Automatic_Upgrader_Skin skin shouldn't output anything.
         $upgrader = new Plugin_Upgrader($skin);
         $upgrader->init();
         // This avoids the plugin to be deactivated.
         defined('DOING_CRON') or define('DOING_CRON', true);
         $result = $upgrader->upgrade($plugin);
         $this->log[$plugin][] = $upgrader->skin->get_upgrade_messages();
     }
     if (!$this->bulk && !$result && $update_attempted) {
         return new WP_Error('update_fail', __('There was an error updating your plugin', 'jetpack'), 400);
     }
     return $this->default_action();
 }

/**
 * Clear existing update caches for plugins, themes, and core.
 *
 * @since 4.1.0
 */
function wp_clean_update_cache()
{
    if (function_exists('wp_clean_plugins_cache')) {
        wp_clean_plugins_cache();
    } else {
        delete_site_transient('update_plugins');
    }
    wp_clean_themes_cache();
    delete_site_transient('update_core');
}

 /**
  * Manages the user input for the languages pages
  *
  * @since 1.9
  *
  * @param string $action
  */
 public function handle_actions($action)
 {
     switch ($action) {
         case 'add':
             check_admin_referer('add-lang', '_wpnonce_add-lang');
             if ($this->model->add_language($_POST) && 'en_US' !== $_POST['locale']) {
                 // attempts to install the language pack
                 require_once ABSPATH . 'wp-admin/includes/translation-install.php';
                 if (!wp_download_language_pack($_POST['locale'])) {
                     add_settings_error('general', 'pll_download_mo', __('The language was created, but the WordPress language file was not downloaded. Please install it manually.', 'polylang'));
                 }
                 // force checking for themes and plugins translations updates
                 wp_clean_themes_cache();
                 wp_clean_plugins_cache();
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'delete':
             check_admin_referer('delete-lang');
             if (!empty($_GET['lang'])) {
                 $this->model->delete_language((int) $_GET['lang']);
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'update':
             check_admin_referer('add-lang', '_wpnonce_add-lang');
             $error = $this->model->update_language($_POST);
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'default-lang':
             check_admin_referer('default-lang');
             if ($lang = $this->model->get_language((int) $_GET['lang'])) {
                 $this->model->update_default_lang($lang->slug);
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'content-default-lang':
             check_admin_referer('content-default-lang');
             if ($nolang = $this->model->get_objects_with_no_lang()) {
                 if (!empty($nolang['posts'])) {
                     $this->model->set_language_in_mass('post', $nolang['posts'], $this->options['default_lang']);
                 }
                 if (!empty($nolang['terms'])) {
                     $this->model->set_language_in_mass('term', $nolang['terms'], $this->options['default_lang']);
                 }
             }
             self::redirect();
             // to refresh the page ( possible thanks to the $_GET['noheader']=true )
             break;
         case 'activate':
             check_admin_referer('pll_activate');
             $this->modules[$_GET['module']]->activate();
             self::redirect();
             break;
         case 'deactivate':
             check_admin_referer('pll_deactivate');
             $this->modules[$_GET['module']]->deactivate();
             self::redirect();
             break;
         default:
             /**
              * Fires when a non default action has been sent to Polylang settings
              *
              * @since 1.8
              */
             do_action("mlang_action_{$action}");
             break;
     }
 }

 protected function update()
 {
     include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
     // unhook this functions that output things before we send our response header.
     remove_action('upgrader_process_complete', array('Language_Pack_Upgrader', 'async_upgrade'), 20);
     remove_action('upgrader_process_complete', 'wp_version_check');
     remove_action('upgrader_process_complete', 'wp_update_themes');
     foreach ($this->plugins as $plugin) {
         wp_clean_plugins_cache();
         ob_start();
         wp_update_plugins();
         // Check for Plugin updates
         ob_end_clean();
         // Object created inside the for loop to clean the messages for each plugin
         $skin = new Automatic_Upgrader_Skin();
         // The Automatic_Upgrader_Skin skin shouldn't output anything.
         $upgrader = new Plugin_Upgrader($skin);
         $upgrader->init();
         $result = $upgrader->upgrade($plugin);
         $this->log[$plugin][] = $upgrader->skin->get_upgrade_messages();
     }
     if (!$this->bulk && !$result) {
         return new WP_Error('update_fail', __('There was an error updating your plugin', 'jetpack'), 400);
     }
     return $this->default_action();
 }

 function install_bsf_product($install_id)
 {
     global $bsf_product_validate_url, $bsf_support_url;
     if (!current_user_can('install_plugins')) {
         wp_die(__('You do not have sufficient permissions to install plugins for this site.', 'bsf'));
     }
     $brainstrom_bundled_products = get_option('brainstrom_bundled_products') ? get_option('brainstrom_bundled_products') : array();
     $install_product_data = array();
     if (!empty($brainstrom_bundled_products)) {
         foreach ($brainstrom_bundled_products as $keys => $products) {
             if (strlen($keys) > 1) {
                 foreach ($products as $key => $product) {
                     if ($product->id === $install_id) {
                         $install_product_data = $product;
                         break;
                     }
                 }
             } else {
                 if ($products->id === $install_id) {
                     $install_product_data = $products;
                     break;
                 }
             }
         }
     }
     if (empty($install_product_data)) {
         return false;
     }
     if ($install_product_data->type !== 'plugin') {
         return false;
     }
     /* temp */
     /*$install_product_data->in_house = 'wp';
     		$install_product_data->download_url = 'https://downloads.wordpress.org/plugin/redux-framework.3.5.9.zip';*/
     $is_wp = isset($install_product_data->in_house) && $install_product_data->in_house === 'wp' ? true : false;
     if ($is_wp) {
         $download_path = $install_product_data->download_url;
     } else {
         $path = $bsf_product_validate_url;
         $timezone = date_default_timezone_get();
         $call = 'file=' . $install_product_data->download_url . '&hashtime=' . strtotime(date('d-m-Y h:i:s a')) . '&timezone=' . $timezone;
         $hash = $call;
         //$parse = parse_url($path);
         //$download = $parse['scheme'].'://'.$parse['host'];
         $get_path = 'http://downloads.brainstormforce.com/';
         $download_path = rtrim($get_path, '/') . '/download.php?' . $hash . '&base=ignore';
     }
     require_once ABSPATH . '/wp-admin/includes/file.php';
     WP_Filesystem();
     global $wp_filesystem;
     require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
     $WP_Upgrader = new WP_Upgrader();
     $res = $WP_Upgrader->fs_connect(array(WP_CONTENT_DIR));
     if (!$res) {
         wp_die(new WP_Error('Server error', __("Error! Can't connect to filesystem", 'bsf')));
     }
     $Plugin_Upgrader = new Plugin_Upgrader();
     $defaults = array('clear_update_cache' => true);
     $args = array();
     $parsed_args = wp_parse_args($args, $defaults);
     $Plugin_Upgrader->init();
     $Plugin_Upgrader->install_strings();
     $Plugin_Upgrader->strings['downloading_package'] = __('Downloading package from Server', 'bsf');
     $Plugin_Upgrader->strings['remove_old'] = __('Removing old plugin, if exists', 'bsf');
     add_filter('upgrader_source_selection', array($Plugin_Upgrader, 'check_package'));
     $Plugin_Upgrader->run(array('package' => $download_path, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('type' => 'plugin', 'action' => 'install')));
     remove_filter('upgrader_source_selection', array($Plugin_Upgrader, 'check_package'));
     if (!$Plugin_Upgrader->result || is_wp_error($Plugin_Upgrader->result)) {
         return $Plugin_Upgrader->result;
     }
     // Force refresh of plugin update information
     wp_clean_plugins_cache($parsed_args['clear_update_cache']);
     //return true;
     $response = array('status' => true, 'type' => 'plugin', 'name' => $install_product_data->name, 'init' => $install_product_data->init);
     $plugin_abs_path = WP_PLUGIN_DIR . '/' . $install_product_data->init;
     if (is_file($plugin_abs_path)) {
         if (!isset($_GET['action']) && !isset($_GET['id'])) {
             echo '|bsf-plugin-installed|';
         }
         $is_plugin_installed = true;
         if (!is_plugin_active($install_product_data->init)) {
             activate_plugin($install_product_data->init);
             if (is_plugin_active($install_product_data->init)) {
                 if (!isset($_GET['action']) && !isset($_GET['id'])) {
                     echo '|bsf-plugin-activated|';
                 }
             }
         } else {
             if (!isset($_GET['action']) && !isset($_GET['id'])) {
                 echo '|bsf-plugin-activated|';
             }
         }
     }
     return $response;
 }

 /**
  * Performs the actual installation of each plugin.
  *
  * This method also activates the plugin in the automatic flag has been
  * set to true for the TGMPA class.
  *
  * @since 2.2.0
  *
  * @param array $options The installation config options
  * @return null/array Return early if error, array of installation data on success
  */
 public function run($options)
 {
     // Default config options.
     $defaults = array('package' => '', 'destination' => '', 'clear_destination' => false, 'clear_working' => true, 'is_multi' => false, 'hook_extra' => array());
     // Parse default options with config options from $this->bulk_upgrade and extract them.
     $options = wp_parse_args($options, $defaults);
     extract($options);
     // Connect to the Filesystem.
     $res = $this->fs_connect(array(WP_CONTENT_DIR, $destination));
     if (!$res) {
         return false;
     }
     // Return early if there is an error connecting to the Filesystem.
     if (is_wp_error($res)) {
         $this->skin->error($res);
         return $res;
     }
     // Call $this->header separately if running multiple times.
     if (!$is_multi) {
         $this->skin->header();
     }
     // Set strings before the package is installed.
     $this->skin->before();
     // Download the package (this just returns the filename of the file if the package is a local file).
     $download = $this->download_package($package);
     if (is_wp_error($download)) {
         $this->skin->error($download);
         $this->skin->after();
         return $download;
     }
     // Don't accidentally delete a local file.
     $delete_package = $download != $package;
     // Unzip file into a temporary working directory.
     $working_dir = $this->unpack_package($download, $delete_package);
     if (is_wp_error($working_dir)) {
         $this->skin->error($working_dir);
         $this->skin->after();
         return $working_dir;
     }
     // Install the package into the working directory with all passed config options.
     $result = $this->install_package(array('source' => $working_dir, 'destination' => $destination, 'clear_destination' => $clear_destination, 'clear_working' => $clear_working, 'hook_extra' => $hook_extra));
     // Pass the result of the installation.
     $this->skin->set_result($result);
     // Set correct strings based on results.
     if (is_wp_error($result)) {
         $this->skin->error($result);
         $this->skin->feedback('process_failed');
     } else {
         $this->skin->feedback('process_success');
     }
     // Only process the activation of installed plugins if the automatic flag is set to true.
     if (TGM_Plugin_Activation::$instance->is_automatic) {
         // Flush plugins cache so we can make sure that the installed plugins list is always up to date.
         wp_cache_flush();
         // Get the installed plugin file and activate it.
         $plugin_info = $this->plugin_info($package);
         $activate = activate_plugin($plugin_info);
         // Re-populate the file path now that the plugin has been installed and activated.
         TGM_Plugin_Activation::$instance->populate_file_path();
         // Set correct strings based on results.
         if (is_wp_error($activate)) {
             $this->skin->error($activate);
             $this->skin->feedback('activation_failed');
         } else {
             $this->skin->feedback('activation_success');
         }
     }
     // Flush plugins cache so we can make sure that the installed plugins list is always up to date.
     if ($hook_extra['update']) {
         // Force refresh of plugin update information
         wp_clean_plugins_cache(true);
     } else {
         wp_cache_flush();
     }
     // Set install footer strings.
     $this->skin->after();
     if (!$is_multi) {
         $this->skin->footer();
     }
     return $result;
 }

//.........这里部分代码省略.........
             }
         }
     }
     if ($bsf_username === '' || $purchase_key === '' || $request_product_id === '') {
         if ($ajax) {
             return __('Not valid to update product', 'bsf');
         } else {
             wp_die('Not valid to update product');
         }
     }
     $path = $bsf_product_validate_url;
     $data = array('action' => 'bsf_product_update_request', 'id' => $request_product_id, 'username' => $bsf_username, 'purchase_key' => $purchase_key, 'site_url' => get_site_url(), 'bundled' => $bundled_id);
     $request = @wp_remote_post($path, array('body' => $data, 'timeout' => '60', 'sslverify' => false));
     if (!is_wp_error($request) || wp_remote_retrieve_response_code($request) === 200) {
         $result = json_decode($request['body']);
         if (isset($result->error) && !$result->error) {
             $download_path = $result->update_data->download_url;
             $timezone = date_default_timezone_get();
             $call = 'file=' . $download_path . '&hashtime=' . strtotime(date('d-m-Y h:i:s a')) . '&timezone=' . $timezone;
             $hash = $call;
             $parse = parse_url($path);
             $download = $parse['scheme'] . '://' . $parse['host'];
             $get_path = 'http://downloads.brainstormforce.com/';
             $download_path = rtrim($get_path, '/') . '/download.php?' . $hash . '&base=ignore';
             //echo $download_path;
             //die();
             require_once ABSPATH . '/wp-admin/includes/file.php';
             WP_Filesystem();
             global $wp_filesystem;
             require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
             $WP_Upgrader = new WP_Upgrader();
             $res = $WP_Upgrader->fs_connect(array(WP_CONTENT_DIR));
             if (!$res) {
                 wp_die(new WP_Error('Server error', __("Error! Can't connect to filesystem", 'bsf')));
             } else {
                 $upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade_tmp/bsf_package';
                 $package_filename = basename($download_path);
                 $plugin_folder = dirname($template);
                 if ($type === 'theme' && $bundled_id === false) {
                     $defaults = array('clear_update_cache' => true);
                     $args = array();
                     $parsed_args = wp_parse_args($args, $defaults);
                     $Theme_Upgrader = new Theme_Upgrader();
                     $Theme_Upgrader->init();
                     $Theme_Upgrader->upgrade_strings();
                     $Theme_Upgrader->strings['downloading_package'] = __('Downloading package from Server', 'bsf');
                     add_filter('upgrader_pre_install', array(&$Theme_Upgrader, 'current_before'), 10, 2);
                     add_filter('upgrader_post_install', array(&$Theme_Upgrader, 'current_after'), 10, 2);
                     add_filter('upgrader_clear_destination', array(&$Theme_Upgrader, 'delete_old_theme'), 10, 4);
                     $Theme_Upgrader->run(array('package' => $download_path, 'destination' => get_theme_root($template), 'clear_destination' => true, 'abort_if_destination_exists' => false, 'clear_working' => true, 'hook_extra' => array('theme' => $template, 'type' => 'theme', 'action' => 'update')));
                     remove_filter('upgrader_pre_install', array(&$Theme_Upgrader, 'current_before'));
                     remove_filter('upgrader_post_install', array(&$Theme_Upgrader, 'current_after'));
                     remove_filter('upgrader_clear_destination', array(&$Theme_Upgrader, 'delete_old_theme'));
                     if (!$Theme_Upgrader->result || is_wp_error($Theme_Upgrader->result)) {
                         return $Theme_Upgrader->result;
                     }
                     wp_clean_themes_cache($parsed_args['clear_update_cache']);
                     $response = array('status' => true, 'type' => 'theme', 'name' => $name);
                     return $response;
                 } elseif ($type === 'plugin') {
                     $is_activated = is_plugin_active($template);
                     $Plugin_Upgrader = new Plugin_Upgrader();
                     $defaults = array('clear_update_cache' => true);
                     $Plugin_Upgrader->init();
                     $Plugin_Upgrader->upgrade_strings();
                     $Plugin_Upgrader->strings['downloading_package'] = __('Downloading package from Server', 'bsf');
                     add_filter('upgrader_pre_install', array($Plugin_Upgrader, 'deactivate_plugin_before_upgrade'), 10, 2);
                     add_filter('upgrader_clear_destination', array($Plugin_Upgrader, 'delete_old_plugin'), 10, 4);
                     //'source_selection' => array($this, 'source_selection'), //there's a trac ticket to move up the directory for zip's which are made a bit differently, useful for non-.org plugins.
                     $Plugin_Upgrader->run(array('package' => $download_path, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('plugin' => $template, 'type' => 'plugin', 'action' => 'update')));
                     // Cleanup our hooks, in case something else does a upgrade on this connection.
                     remove_filter('upgrader_pre_install', array($Plugin_Upgrader, 'deactivate_plugin_before_upgrade'));
                     remove_filter('upgrader_clear_destination', array($Plugin_Upgrader, 'delete_old_plugin'));
                     if (!$Plugin_Upgrader->result || is_wp_error($Plugin_Upgrader->result)) {
                         return $Plugin_Upgrader->result;
                     }
                     // Force refresh of plugin update information
                     wp_clean_plugins_cache($defaults['clear_update_cache']);
                     if ($is_activated) {
                         activate_plugin($template);
                     }
                     $response = array('status' => true, 'type' => 'plugin', 'name' => $name);
                     return $response;
                 }
             }
         } else {
             if ($ajax) {
                 return $result->message;
             } else {
                 echo $result->message;
             }
         }
     } else {
         if ($ajax) {
             return $request->get_error_message();
         } else {
             echo $request->get_error_message();
         }
     }
 }

 private function activate_plugins()
 {
     echo '<h3>' . esc_html__('Activating plugins...', '1and1-wordpress-wizard') . '</h3>';
     require_once ABSPATH . '/wp-admin/includes/plugin.php';
     wp_clean_plugins_cache(true);
     $plugins = get_plugins();
     $plugin_slugs = wp_list_pluck($this->plugins, 'slug');
     foreach ($plugins as $key => $plugin) {
         $parts = explode('/', $key);
         if (in_array($parts[0], $plugin_slugs)) {
             activate_plugin($key);
         }
     }
 }

//.........这里部分代码省略.........
     } else {
         // Verify authentication data
         $authentication = (bool) $_GET['authentication'];
         $username = isset($_POST['username']) ? $_POST['username'] : '';
         $password = isset($_POST['password']) ? $_POST['password'] : '';
         if ($authentication && (empty($username) || empty($password))) {
             // Check if user has customer account saved
             $customer_account = get_option('ig_customer_account', null);
             if (is_array($customer_account) && !@empty($customer_account['username']) && !@empty($customer_account['password'])) {
                 $username = $customer_account['username'];
                 $password = $customer_account['password'];
             } else {
                 throw new Exception(null);
             }
         }
         // Try to authenticate or download addon installation package
         try {
             $package = self::download($addon, $authentication, $username, $password, 'authenticate' == $action);
         } catch (Exception $e) {
             throw $e;
         }
         // Get WordPress's WordPress Filesystem Abstraction object
         $wp_filesystem = IG_Init_File_System::get_instance();
         // Check if addon should be installed or updated
         if ('authenticate' != $action) {
             // Verify core and add-on compatibility
             if (isset($_GET['core']) && ($core = self::get($_GET['core']))) {
                 // Extract downloaded add-on package
                 $tmp_dir = substr($package, 0, -4);
                 $result = unzip_file($package, $tmp_dir);
                 if (is_wp_error($result)) {
                     throw new Exception($result->get_error_message());
                 }
                 // Find constant definition file
                 if (@is_file("{$tmp_dir}/defines.php")) {
                     include "{$tmp_dir}/defines.php";
                 } elseif (count($defines = glob("{$tmp_dir}/*/defines.php"))) {
                     include current($defines);
                 }
                 // Get minimum core version required for this add-on
                 if (defined($core_version = strtoupper($addon) . '_CORE_VERSION')) {
                     eval('$core_version = ' . $core_version . ';');
                 }
                 if ($core_version && version_compare($core_version, $core['Version'], '>')) {
                     // Delete downloaded add-on package and clean-up temporary directory
                     $wp_filesystem->delete($package);
                     $wp_filesystem->delete($tmp_dir, true);
                     // Skip add-on installation
                     throw new Exception(sprintf(__("Cannot install %1\$s v%2\$s.\nThis version requires %3\$s v%4\$s while you are using %5\$s v%6\$s.", IG_LIBRARY_TEXTDOMAIN), $core['Addons'][$addon]->name, $core['Addons'][$addon]->version, $core['Name'], $core_version, $core['Name'], $core['Version']));
                 }
                 // Verification done, clean-up temporary directory
                 $wp_filesystem->delete($tmp_dir, true);
             }
             // Init WordPress Plugin Upgrader
             class_exists('Plugin_Upgrader') || (include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php');
             function_exists('screen_icon') || (include_once ABSPATH . 'wp-admin/includes/screen.php');
             function_exists('show_message') || (include_once ABSPATH . 'wp-admin/includes/misc.php');
             function_exists('get_plugin_data') || (include_once ABSPATH . 'wp-admin/includes/plugin.php');
             // Either install or update add-on
             $upgrader = new Plugin_Upgrader();
             if ('install' == $action) {
                 // Install plugin
                 $result = $upgrader->install($package);
                 // Verify installation result
                 if (is_wp_error($result)) {
                     throw new Exception($result->get_error_message());
                 }
             } else {
                 // Update plugin
                 add_filter('upgrader_pre_install', array($upgrader, 'deactivate_plugin_before_upgrade'), 10, 2);
                 add_filter('upgrader_clear_destination', array($upgrader, 'delete_old_plugin'), 10, 4);
                 $upgrader->run(array('package' => $package, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('plugin' =>