product = $product; $this->license_manager = $license_manager; // maybe delete transient $this->maybe_delete_transients(); } /** * Deletes the various transients * If we're on the update-core.php?force-check=1 page */ private function maybe_delete_transients() { global $pagenow; if( $pagenow === 'update-core.php' && isset( $_GET['force-check'] ) ) { delete_site_transient( $this->product->get_prefix() . 'update-response' ); delete_site_transient( $this->product->get_prefix() . 'update-request-failed' ); } } /** * If the update check returned a WP_Error, show it to the user */ public function show_update_error() { if ( $this->error_message === '' ) { return; } ?>

%s', $this->product->get_text_domain() ), $this->product->get_item_name(), $this->error_message ); ?>

product->get_prefix() . 'update-request-failed' ) !== false ) { return false; } global $wp_version; // set a transient to prevent failed update checks on every page load // this transient will be removed if a request succeeds set_site_transient( $this->product->get_prefix() . 'update-request-failed', 'failed', 10800 ); // setup api parameters $api_params = array( 'edd_action' => 'get_version', 'license' => $this->license_manager->get_license_key(), 'item_version' => $this->product->get_version(), 'url' => get_option( 'home' ), ); $url = add_query_arg( $api_params, $this->product->get_api_url() ); require_once dirname( __FILE__ ) . '/class-api-request.php'; $request = new DVK_API_Request( $url ); if( $request->is_valid() !== true ) { // show error message $this->error_message = $request->get_error_message(); add_action( 'admin_notices', array( $this, 'show_update_error' ) ); return false; } // request succeeded, delete transient indicating a request failed delete_site_transient( $this->product->get_prefix() . 'update-request-failed' ); // decode response $response = $request->get_response(); // check if response returned that a given site was inactive if( isset( $response->license_check ) && ! empty( $response->license_check ) && (string) $response->license_check !== 'valid' ) { // deactivate local license $this->license_manager->set_license_status( 'invalid' ); // show notice to let the user know we deactivated his/her license $this->error_message = __( "This site has not been activated properly on mc4wp.com and thus cannot check for future updates. Please activate your site with a valid license key.", $this->product->get_text_domain() ); add_action( 'admin_notices', array( $this, 'show_update_error' ) ); return false; } // add slug so we can omit it in the request $response->slug = $this->product->get_slug(); $response->sections = maybe_unserialize( $response->sections ); // store response set_site_transient( $this->product->get_prefix() . 'update-response', $response, 10800 ); return $response; } /** * Gets the remote product data (from the EDD API) * * - If it was previously fetched in the current requests, this gets it from the instance property * - Next, it tries the 3-hour transient * - Next, it calls the remote API and stores the result * * @return object */ protected function get_remote_data() { // always use property if it's set if( null !== $this->update_response ) { return $this->update_response; } // get cached remote data $data = $this->get_cached_remote_data(); // if cache is empty or expired, call remote api if( $data === false ) { $data = $this->call_remote_api(); } $this->update_response = $data; return $data; } /** * Gets the remote product data from a 3-hour transient * * @return bool|mixed */ private function get_cached_remote_data() { $data = get_site_transient( $this->product->get_prefix() . 'update-response' ); if( $data ) { return $data; } return false; } } }