File_Upload_Upgrader

19#[AllowDynamicProperties]20class File_Upload_Upgrader {21 22	/**23	 * The full path to the file package.24	 *25	 * @since 2.8.026	 * @var string $package27	 */28	public $package;29 30	/**31	 * The name of the file.32	 *33	 * @since 2.8.034	 * @var string $filename35	 */36	public $filename;37 38	/**39	 * The ID of the attachment post for this file.40	 *41	 * @since 3.3.042	 * @var int $id43	 */44	public $id = 0;45 46	/**47	 * Construct the upgrader for a form.48	 *49	 * @since 2.8.050	 *51	 * @param string $form      The name of the form the file was uploaded from.52	 * @param string $urlholder The name of the `GET` parameter that holds the filename.53	 */54	public function __construct( $form, $urlholder ) {55 56		if ( empty( $_FILES[ $form ]['name'] ) && empty( $_GET[ $urlholder ] ) ) {57			wp_die( __( 'Please select a file' ) );58		}59 60		// Handle a newly uploaded file. Else, assume it's already been uploaded.61		if ( ! empty( $_FILES ) ) {62			$overrides = array(63				'test_form' => false,64				'test_type' => false,65			);66			$file      = wp_handle_upload( $_FILES[ $form ], $overrides );67 68			if ( isset( $file['error'] ) ) {69				wp_die( $file['error'] );70			}71 72			if ( 'pluginzip' === $form || 'themezip' === $form ) {73				if ( ! wp_zip_file_is_valid( $file['file'] ) ) {74					wp_delete_file( $file['file'] );75 76					if ( 'pluginzip' === $form ) {77						$plugins_page = sprintf(78							'<a href="%s">%s</a>',79							self_admin_url( 'plugin-install.php' ),80							__( 'Return to the Plugin Installer' )81						);82						wp_die( __( 'Incompatible Archive.' ) . '<br />' . $plugins_page );83					}84 85					if ( 'themezip' === $form ) {86						$themes_page = sprintf(87							'<a href="%s" target="_parent">%s</a>',88							self_admin_url( 'theme-install.php' ),89							__( 'Return to the Theme Installer' )90						);91						wp_die( __( 'Incompatible Archive.' ) . '<br />' . $themes_page );92					}93				}94			}95 96			$this->filename = $_FILES[ $form ]['name'];97			$this->package  = $file['file'];98