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Name	Size	Permission	Date
ajax-actions.php	134.33 KB	-rw-r--r--	2019-10-01 16:28
class-automatic-upgrader-skin.php	3.07 KB	-rw-r--r--	2018-08-17 01:51
class-bulk-plugin-upgrader-skin.php	2.01 KB	-rw-r--r--	2018-08-30 13:36
class-bulk-theme-upgrader-skin.php	2.04 KB	-rw-r--r--	2018-08-30 13:36
class-bulk-upgrader-skin.php	5.18 KB	-rw-r--r--	2018-03-11 16:44
class-file-upload-upgrader.php	3.29 KB	-rw-r--r--	2017-11-30 23:11
class-ftp-pure.php	5.27 KB	-rw-r--r--	2019-03-17 01:20
class-language-pack-upgrader-skin.php	2.31 KB	-rw-r--r--	2018-08-30 13:36
class-language-pack-upgrader.php	14.38 KB	-rw-r--r--	2019-01-21 21:13
class-plugin-upgrader-skin.php	2.62 KB	-rw-r--r--	2018-03-22 20:27
class-theme-installer-skin.php	4.33 KB	-rw-r--r--	2018-08-30 13:36
class-theme-upgrader-skin.php	3.75 KB	-rw-r--r--	2018-08-30 13:36
class-walker-category-checklist.php	4.16 KB	-rw-r--r--	2017-11-30 23:11
class-walker-nav-menu-checklist.php	4.9 KB	-rw-r--r--	2018-08-30 13:36
class-wp-ajax-upgrader-skin.php	2.97 KB	-rw-r--r--	2018-02-27 02:31
class-wp-community-events.php	15.58 KB	-rw-r--r--	2018-06-28 02:34
class-wp-importer.php	7.35 KB	-rw-r--r--	2018-03-02 17:17
class-wp-links-list-table.php	7.57 KB	-rw-r--r--	2021-04-15 04:01
class-wp-media-list-table.php	22.37 KB	-rw-r--r--	2019-04-08 23:54
class-wp-ms-sites-list-table.php	15.48 KB	-rw-r--r--	2018-08-17 01:51
class-wp-ms-themes-list-table.php	20.06 KB	-rw-r--r--	2018-08-17 01:51
class-wp-post-comments-list-table.php	1.44 KB	-rw-r--r--	2018-08-17 01:51
class-wp-site-health-auto-updates.php	12.22 KB	-rw-r--r--	2019-05-01 18:08
class-wp-site-health.php	59.59 KB	-rw-r--r--	2019-05-17 11:56
class-wp-themes-list-table.php	9.31 KB	-rw-r--r--	2019-04-01 11:55
class-wp-upgrader-skin.php	5.04 KB	-rw-r--r--	2019-03-21 18:03
class-wp-upgrader-skins.php	1.42 KB	-rw-r--r--	2016-12-03 03:40
class-wp-users-list-table.php	17.13 KB	-rw-r--r--	2019-01-12 06:41
continents-cities.php	20.26 KB	-rw-r--r--	2018-07-18 11:21
credits.php	2.16 KB	-rw-r--r--	2017-11-30 23:11
edit-tag-messages.php	1.38 KB	-rw-r--r--	2017-11-30 23:11
image-edit.php	33.9 KB	-rw-r--r--	2019-03-01 20:58
misc.php	72.5 KB	-rw-r--r--	2020-10-29 20:52
ms-admin-filters.php	1.34 KB	-rw-r--r--	2017-11-30 23:11
taxonomy.php	7.73 KB	-rw-r--r--	2018-03-25 19:35
user.php	51.58 KB	-rw-r--r--	2019-04-13 18:08

Rename

<?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.
 */
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'] );
			}

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

// Construct the object array
			$object = 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( $object, $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.
			if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) ) {
				wp_die( $uploads['error'] );
			}

$this->filename = sanitize_file_name( $_GET[ $urlholder ] );
			$this->package  = $uploads['basedir'] . '/' . $this->filename;

if ( 0 !== strpos( realpath( $this->package ), realpath( $uploads['basedir'] ) ) ) {
				wp_die( __( 'Please select a file' ) );
			}
		}
	}

/**
	 * Delete 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;
	}
}