<?php

/**

 * Upgrade API: File_Upload_Upgrader class

 *

 * @package WordPress

 * @subpackage Upgrader

 * @since 4.6.0

 */

/**

 * Core class used for handling file uploads.

 *

 * This class handles the upload process and passes it as if it's a local file

 * to the Upgrade/Installer functions.

 *

 * @since 2.8.0

 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.

 */

#[AllowDynamicProperties]

class File_Upload_Upgrader {

	/**

	 * The full path to the file package.

	 *

	 * @since 2.8.0

	 * @var string $package

	 */

	public $package;

	/**

	 * The name of the file.

	 *

	 * @since 2.8.0

	 * @var string $filename

	 */

	public $filename;

	/**

	 * The ID of the attachment post for this file.

	 *

	 * @since 3.3.0

	 * @var int $id

	 */

	public $id = 0;

	/**

	 * Construct the upgrader for a form.

	 *

	 * @since 2.8.0

	 *

	 * @param string $form      The name of the form the file was uploaded from.

	 * @param string $urlholder The name of the `GET` parameter that holds the filename.

	 */

	public function __construct( $form, $urlholder ) {

		if ( empty( $_FILES[ $form ]['name'] ) && empty( $_GET[ $urlholder ] ) ) {

			wp_die( __( 'Please select a file' ) );

		}

		// Handle a newly uploaded file. Else, assume it's already been uploaded.

		if ( ! empty( $_FILES ) ) {

			$overrides = array(

				'test_form' => false,

				'test_type' => false,

			);

			$file      = wp_handle_upload( $_FILES[ $form ], $overrides );

			if ( isset( $file['error'] ) ) {

				wp_die( $file['error'] );

			}

			if ( 'pluginzip' === $form || 'themezip' === $form ) {

				if ( ! wp_zip_file_is_valid( $file['file'] ) ) {

					wp_delete_file( $file['file'] );

					if ( 'pluginzip' === $form ) {

						$plugins_page = sprintf(

							'<a href="%s">%s</a>',

							self_admin_url( 'plugin-install.php' ),

							__( 'Return to the Plugin Installer' )

						);

						wp_die( __( 'Incompatible Archive.' ) . '<br />' . $plugins_page );

					}

					if ( 'themezip' === $form ) {

						$themes_page = sprintf(

							'<a href="%s" target="_parent">%s</a>',

							self_admin_url( 'theme-install.php' ),

							__( 'Return to the Theme Installer' )

						);

						wp_die( __( 'Incompatible Archive.' ) . '<br />' . $themes_page );

					}

				}

			}

			$this->filename = $_FILES[ $form ]['name'];

			$this->package  = $file['file'];

			// Construct the attachment array.

			$attachment = array(

				'post_title'     => $this->filename,

				'post_content'   => $file['url'],

				'post_mime_type' => $file['type'],

				'guid'           => $file['url'],

				'context'        => 'upgrader',

				'post_status'    => 'private',

			);

			// Save the data.

			$this->id = wp_insert_attachment( $attachment, $file['file'] );

			// Schedule a cleanup for 2 hours from now in case of failed installation.

			wp_schedule_single_event( time() + 2 * HOUR_IN_SECONDS, 'upgrader_scheduled_cleanup', array( $this->id ) );

		} elseif ( is_numeric( $_GET[ $urlholder ] ) ) {

			// Numeric Package = previously uploaded file, see above.

			$this->id   = (int) $_GET[ $urlholder ];

			$attachment = get_post( $this->id );

			if ( empty( $attachment ) ) {

				wp_die( __( 'Please select a file' ) );

			}

			$this->filename = $attachment->post_title;

			$this->package  = get_attached_file( $attachment->ID );

		} else {

			// Else, It's set to something, Back compat for plugins using the old (pre-3.3) File_Uploader handler.

			$uploads = wp_upload_dir();

			if ( ! ( $uploads && false === $uploads['error'] ) ) {

				wp_die( $uploads['error'] );

			}

			$this->filename = sanitize_file_name( $_GET[ $urlholder ] );

			$this->package  = $uploads['basedir'] . '/' . $this->filename;

			if ( ! str_starts_with( realpath( $this->package ), realpath( $uploads['basedir'] ) ) ) {

				wp_die( __( 'Please select a file' ) );

			}

		}

	}

	/**

	 * Deletes the attachment/uploaded file.

	 *

	 * @since 3.2.2

	 *

	 * @return bool Whether the cleanup was successful.

	 */

	public function cleanup() {

		if ( $this->id ) {

			wp_delete_attachment( $this->id );

		} elseif ( file_exists( $this->package ) ) {

			return @unlink( $this->package );

		}

		return true;

	}

}