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<?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;
}
}