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WordPress/wp-admin/includes/class-wp-upgrader.php
Peter Wilson 88b1019dc3 Upgrade/install: Revert upgrader rollback features. 
Revert the rollback features introduced for theme and plugin upgrades during the WordPress 5.9 cycle. A bug (suspected to be in third party virtualisation software) causes the upgrades to fail consistently on some set ups. The revert is to allow contributors further time to investigate mitigation options.

Reverts [52337], [52289], [52284], [51951], [52192], [51902], [51899], [51898], [51815].

Props pbiron, dlh, peterwilsoncc, galbaras, SergeyBiryukov, afragen, costdev, bronsonquick, aristath, noisysocks, desrosj, TobiasBg, hellofromTonya, francina, Boniu91.
See #54543, #54166, #51857.



Built from https://develop.svn.wordpress.org/trunk@52351


git-svn-id: http://core.svn.wordpress.org/trunk@51943 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-12-10 00:06:04 +00:00

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<?php
/**
* Upgrade API: WP_Upgrader class
*
* Requires skin classes and WP_Upgrader subclasses for backward compatibility.
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
/** WP_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader-skin.php';
/** Plugin_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader-skin.php';
/** Theme_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader-skin.php';
/** Bulk_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-bulk-upgrader-skin.php';
/** Bulk_Plugin_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-bulk-plugin-upgrader-skin.php';
/** Bulk_Theme_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-bulk-theme-upgrader-skin.php';
/** Plugin_Installer_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php';
/** Theme_Installer_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-theme-installer-skin.php';
/** Language_Pack_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader-skin.php';
/** Automatic_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-automatic-upgrader-skin.php';
/** WP_Ajax_Upgrader_Skin class */
require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php';
/**
* Core class used for upgrading/installing a local set of files via
* the Filesystem Abstraction classes from a Zip file.
*
* @since 2.8.0
*/
class WP_Upgrader {
/**
* The error/notification strings used to update the user on the progress.
*
* @since 2.8.0
* @var array $strings
*/
public $strings = array();
/**
* The upgrader skin being used.
*
* @since 2.8.0
* @var Automatic_Upgrader_Skin|WP_Upgrader_Skin $skin
*/
public $skin = null;
/**
* The result of the installation.
*
* This is set by WP_Upgrader::install_package(), only when the package is installed
* successfully. It will then be an array, unless a WP_Error is returned by the
* {@see 'upgrader_post_install'} filter. In that case, the WP_Error will be assigned to
* it.
*
* @since 2.8.0
*
* @var array|WP_Error $result {
* @type string $source The full path to the source the files were installed from.
* @type string $source_files List of all the files in the source directory.
* @type string $destination The full path to the installation destination folder.
* @type string $destination_name The name of the destination folder, or empty if `$destination`
* and `$local_destination` are the same.
* @type string $local_destination The full local path to the destination folder. This is usually
* the same as `$destination`.
* @type string $remote_destination The full remote path to the destination folder
* (i.e., from `$wp_filesystem`).
* @type bool $clear_destination Whether the destination folder was cleared.
* }
*/
public $result = array();
/**
* The total number of updates being performed.
*
* Set by the bulk update methods.
*
* @since 3.0.0
* @var int $update_count
*/
public $update_count = 0;
/**
* The current update if multiple updates are being performed.
*
* Used by the bulk update methods, and incremented for each update.
*
* @since 3.0.0
* @var int
*/
public $update_current = 0;
/**
* Construct the upgrader with a skin.
*
* @since 2.8.0
*
* @param WP_Upgrader_Skin $skin The upgrader skin to use. Default is a WP_Upgrader_Skin
* instance.
*/
public function __construct( $skin = null ) {
if ( null === $skin ) {
$this->skin = new WP_Upgrader_Skin();
} else {
$this->skin = $skin;
}
}
/**
* Initialize the upgrader.
*
* This will set the relationship between the skin being used and this upgrader,
* and also add the generic strings to `WP_Upgrader::$strings`.
*
* @since 2.8.0
*/
public function init() {
$this->skin->set_upgrader( $this );
$this->generic_strings();
}
/**
* Add the generic strings to WP_Upgrader::$strings.
*
* @since 2.8.0
*/
public function generic_strings() {
$this->strings['bad_request'] = __( 'Invalid data provided.' );
$this->strings['fs_unavailable'] = __( 'Could not access filesystem.' );
$this->strings['fs_error'] = __( 'Filesystem error.' );
$this->strings['fs_no_root_dir'] = __( 'Unable to locate WordPress root directory.' );
$this->strings['fs_no_content_dir'] = __( 'Unable to locate WordPress content directory (wp-content).' );
$this->strings['fs_no_plugins_dir'] = __( 'Unable to locate WordPress plugin directory.' );
$this->strings['fs_no_themes_dir'] = __( 'Unable to locate WordPress theme directory.' );
/* translators: %s: Directory name. */
$this->strings['fs_no_folder'] = __( 'Unable to locate needed folder (%s).' );
$this->strings['download_failed'] = __( 'Download failed.' );
$this->strings['installing_package'] = __( 'Installing the latest version&#8230;' );
$this->strings['no_files'] = __( 'The package contains no files.' );
$this->strings['folder_exists'] = __( 'Destination folder already exists.' );
$this->strings['mkdir_failed'] = __( 'Could not create directory.' );
$this->strings['incompatible_archive'] = __( 'The package could not be installed.' );
$this->strings['files_not_writable'] = __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' );
$this->strings['maintenance_start'] = __( 'Enabling Maintenance mode&#8230;' );
$this->strings['maintenance_end'] = __( 'Disabling Maintenance mode&#8230;' );
}
/**
* Connect to the filesystem.
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
*
* @param string[] $directories Optional. Array of directories. If any of these do
* not exist, a WP_Error object will be returned.
* Default empty array.
* @param bool $allow_relaxed_file_ownership Whether to allow relaxed file ownership.
* Default false.
* @return bool|WP_Error True if able to connect, false or a WP_Error otherwise.
*/
public function fs_connect( $directories = array(), $allow_relaxed_file_ownership = false ) {
global $wp_filesystem;
$credentials = $this->skin->request_filesystem_credentials( false, $directories[0], $allow_relaxed_file_ownership );
if ( false === $credentials ) {
return false;
}
if ( ! WP_Filesystem( $credentials, $directories[0], $allow_relaxed_file_ownership ) ) {
$error = true;
if ( is_object( $wp_filesystem ) && $wp_filesystem->errors->has_errors() ) {
$error = $wp_filesystem->errors;
}
// Failed to connect. Error and request again.
$this->skin->request_filesystem_credentials( $error, $directories[0], $allow_relaxed_file_ownership );
return false;
}
if ( ! is_object( $wp_filesystem ) ) {
return new WP_Error( 'fs_unavailable', $this->strings['fs_unavailable'] );
}
if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {
return new WP_Error( 'fs_error', $this->strings['fs_error'], $wp_filesystem->errors );
}
foreach ( (array) $directories as $dir ) {
switch ( $dir ) {
case ABSPATH:
if ( ! $wp_filesystem->abspath() ) {
return new WP_Error( 'fs_no_root_dir', $this->strings['fs_no_root_dir'] );
}
break;
case WP_CONTENT_DIR:
if ( ! $wp_filesystem->wp_content_dir() ) {
return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] );
}
break;
case WP_PLUGIN_DIR:
if ( ! $wp_filesystem->wp_plugins_dir() ) {
return new WP_Error( 'fs_no_plugins_dir', $this->strings['fs_no_plugins_dir'] );
}
break;
case get_theme_root():
if ( ! $wp_filesystem->wp_themes_dir() ) {
return new WP_Error( 'fs_no_themes_dir', $this->strings['fs_no_themes_dir'] );
}
break;
default:
if ( ! $wp_filesystem->find_folder( $dir ) ) {
return new WP_Error( 'fs_no_folder', sprintf( $this->strings['fs_no_folder'], esc_html( basename( $dir ) ) ) );
}
break;
}
}
return true;
}
/**
* Download a package.
*
* @since 2.8.0
* @since 5.2.0 Added the `$check_signatures` parameter.
* @since 5.5.0 Added the `$hook_extra` parameter.
*
* @param string $package The URI of the package. If this is the full path to an
* existing local file, it will be returned untouched.
* @param bool $check_signatures Whether to validate file signatures. Default false.
* @param array $hook_extra Extra arguments to pass to the filter hooks. Default empty array.
* @return string|WP_Error The full path to the downloaded package file, or a WP_Error object.
*/
public function download_package( $package, $check_signatures = false, $hook_extra = array() ) {
/**
* Filters whether to return the package.
*
* @since 3.7.0
* @since 5.5.0 Added the `$hook_extra` parameter.
*
* @param bool $reply Whether to bail without returning the package.
* Default false.
* @param string $package The package file name.
* @param WP_Upgrader $upgrader The WP_Upgrader instance.
* @param array $hook_extra Extra arguments passed to hooked filters.
*/
$reply = apply_filters( 'upgrader_pre_download', false, $package, $this, $hook_extra );
if ( false !== $reply ) {
return $reply;
}
if ( ! preg_match( '!^(http|https|ftp)://!i', $package ) && file_exists( $package ) ) { // Local file or remote?
return $package; // Must be a local file.
}
if ( empty( $package ) ) {
return new WP_Error( 'no_package', $this->strings['no_package'] );
}
$this->skin->feedback( 'downloading_package', $package );
$download_file = download_url( $package, 300, $check_signatures );
if ( is_wp_error( $download_file ) && ! $download_file->get_error_data( 'softfail-filename' ) ) {
return new WP_Error( 'download_failed', $this->strings['download_failed'], $download_file->get_error_message() );
}
return $download_file;
}
/**
* Unpack a compressed package file.
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
*
* @param string $package Full path to the package file.
* @param bool $delete_package Optional. Whether to delete the package file after attempting
* to unpack it. Default true.
* @return string|WP_Error The path to the unpacked contents, or a WP_Error on failure.
*/
public function unpack_package( $package, $delete_package = true ) {
global $wp_filesystem;
$this->skin->feedback( 'unpack_package' );
$upgrade_folder = $wp_filesystem->wp_content_dir() . 'upgrade/';
// Clean up contents of upgrade directory beforehand.
$upgrade_files = $wp_filesystem->dirlist( $upgrade_folder );
if ( ! empty( $upgrade_files ) ) {
foreach ( $upgrade_files as $file ) {
$wp_filesystem->delete( $upgrade_folder . $file['name'], true );
}
}
// We need a working directory - strip off any .tmp or .zip suffixes.
$working_dir = $upgrade_folder . basename( basename( $package, '.tmp' ), '.zip' );
// Clean up working directory.
if ( $wp_filesystem->is_dir( $working_dir ) ) {
$wp_filesystem->delete( $working_dir, true );
}
// Unzip package to working directory.
$result = unzip_file( $package, $working_dir );
// Once extracted, delete the package if required.
if ( $delete_package ) {
unlink( $package );
}
if ( is_wp_error( $result ) ) {
$wp_filesystem->delete( $working_dir, true );
if ( 'incompatible_archive' === $result->get_error_code() ) {
return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], $result->get_error_data() );
}
return $result;
}
return $working_dir;
}
/**
* Flatten the results of WP_Filesystem_Base::dirlist() for iterating over.
*
* @since 4.9.0
* @access protected
*
* @param array $nested_files Array of files as returned by WP_Filesystem_Base::dirlist().
* @param string $path Relative path to prepend to child nodes. Optional.
* @return array A flattened array of the $nested_files specified.
*/
protected function flatten_dirlist( $nested_files, $path = '' ) {
$files = array();
foreach ( $nested_files as $name => $details ) {
$files[ $path . $name ] = $details;
// Append children recursively.
if ( ! empty( $details['files'] ) ) {
$children = $this->flatten_dirlist( $details['files'], $path . $name . '/' );
// Merge keeping possible numeric keys, which array_merge() will reindex from 0..n.
$files = $files + $children;
}
}
return $files;
}
/**
* Clears the directory where this item is going to be installed into.
*
* @since 4.3.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
*
* @param string $remote_destination The location on the remote filesystem to be cleared.
* @return true|WP_Error True upon success, WP_Error on failure.
*/
public function clear_destination( $remote_destination ) {
global $wp_filesystem;
$files = $wp_filesystem->dirlist( $remote_destination, true, true );
// False indicates that the $remote_destination doesn't exist.
if ( false === $files ) {
return true;
}
// Flatten the file list to iterate over.
$files = $this->flatten_dirlist( $files );
// Check all files are writable before attempting to clear the destination.
$unwritable_files = array();
// Check writability.
foreach ( $files as $filename => $file_details ) {
if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) {
// Attempt to alter permissions to allow writes and try again.
$wp_filesystem->chmod( $remote_destination . $filename, ( 'd' === $file_details['type'] ? FS_CHMOD_DIR : FS_CHMOD_FILE ) );
if ( ! $wp_filesystem->is_writable( $remote_destination . $filename ) ) {
$unwritable_files[] = $filename;
}
}
}
if ( ! empty( $unwritable_files ) ) {
return new WP_Error( 'files_not_writable', $this->strings['files_not_writable'], implode( ', ', $unwritable_files ) );
}
if ( ! $wp_filesystem->delete( $remote_destination, true ) ) {
return new WP_Error( 'remove_old_failed', $this->strings['remove_old_failed'] );
}
return true;
}
/**
* Install a package.
*
* Copies the contents of a package from a source directory, and installs them in
* a destination directory. Optionally removes the source. It can also optionally
* clear out the destination folder if it already exists.
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
* @global array $wp_theme_directories
*
* @param array|string $args {
* Optional. Array or string of arguments for installing a package. Default empty array.
*
* @type string $source Required path to the package source. Default empty.
* @type string $destination Required path to a folder to install the package in.
* Default empty.
* @type bool $clear_destination Whether to delete any files already in the destination
* folder. Default false.
* @type bool $clear_working Whether to delete the files from the working directory
* after copying them to the destination. Default false.
* @type bool $abort_if_destination_exists Whether to abort the installation if
* the destination folder already exists. Default true.
* @type array $hook_extra Extra arguments to pass to the filter hooks called by
* WP_Upgrader::install_package(). Default empty array.
* }
*
* @return array|WP_Error The result (also stored in `WP_Upgrader::$result`), or a WP_Error on failure.
*/
public function install_package( $args = array() ) {
global $wp_filesystem, $wp_theme_directories;
$defaults = array(
'source' => '', // Please always pass this.
'destination' => '', // ...and this.
'clear_destination' => false,
'clear_working' => false,
'abort_if_destination_exists' => true,
'hook_extra' => array(),
);
$args = wp_parse_args( $args, $defaults );
// These were previously extract()'d.
$source = $args['source'];
$destination = $args['destination'];
$clear_destination = $args['clear_destination'];
set_time_limit( 300 );
if ( empty( $source ) || empty( $destination ) ) {
return new WP_Error( 'bad_request', $this->strings['bad_request'] );
}
$this->skin->feedback( 'installing_package' );
/**
* Filters the install response before the installation has started.
*
* Returning a value that could be evaluated as a `WP_Error` will effectively
* short-circuit the installation, returning that value instead.
*
* @since 2.8.0
*
* @param bool|WP_Error $response Response.
* @param array $hook_extra Extra arguments passed to hooked filters.
*/
$res = apply_filters( 'upgrader_pre_install', true, $args['hook_extra'] );
if ( is_wp_error( $res ) ) {
return $res;
}
// Retain the original source and destinations.
$remote_source = $args['source'];
$local_destination = $destination;
$source_files = array_keys( $wp_filesystem->dirlist( $remote_source ) );
$remote_destination = $wp_filesystem->find_folder( $local_destination );
// Locate which directory to copy to the new folder. This is based on the actual folder holding the files.
if ( 1 === count( $source_files ) && $wp_filesystem->is_dir( trailingslashit( $args['source'] ) . $source_files[0] . '/' ) ) {
// Only one folder? Then we want its contents.
$source = trailingslashit( $args['source'] ) . trailingslashit( $source_files[0] );
} elseif ( 0 === count( $source_files ) ) {
// There are no files?
return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] );
} else {
// It's only a single file, the upgrader will use the folder name of this file as the destination folder.
// Folder name is based on zip filename.
$source = trailingslashit( $args['source'] );
}
/**
* Filters the source file location for the upgrade package.
*
* @since 2.8.0
* @since 4.4.0 The $hook_extra parameter became available.
*
* @param string $source File source location.
* @param string $remote_source Remote file source location.
* @param WP_Upgrader $upgrader WP_Upgrader instance.
* @param array $hook_extra Extra arguments passed to hooked filters.
*/
$source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this, $args['hook_extra'] );
if ( is_wp_error( $source ) ) {
return $source;
}
// Has the source location changed? If so, we need a new source_files list.
if ( $source !== $remote_source ) {
$source_files = array_keys( $wp_filesystem->dirlist( $source ) );
}
/*
* Protection against deleting files in any important base directories.
* Theme_Upgrader & Plugin_Upgrader also trigger this, as they pass the
* destination directory (WP_PLUGIN_DIR / wp-content/themes) intending
* to copy the directory into the directory, whilst they pass the source
* as the actual files to copy.
*/
$protected_directories = array( ABSPATH, WP_CONTENT_DIR, WP_PLUGIN_DIR, WP_CONTENT_DIR . '/themes' );
if ( is_array( $wp_theme_directories ) ) {
$protected_directories = array_merge( $protected_directories, $wp_theme_directories );
}
if ( in_array( $destination, $protected_directories, true ) ) {
$remote_destination = trailingslashit( $remote_destination ) . trailingslashit( basename( $source ) );
$destination = trailingslashit( $destination ) . trailingslashit( basename( $source ) );
}
if ( $clear_destination ) {
// We're going to clear the destination if there's something there.
$this->skin->feedback( 'remove_old' );
$removed = $this->clear_destination( $remote_destination );
/**
* Filters whether the upgrader cleared the destination.
*
* @since 2.8.0
*
* @param true|WP_Error $removed Whether the destination was cleared.
* True upon success, WP_Error on failure.
* @param string $local_destination The local package destination.
* @param string $remote_destination The remote package destination.
* @param array $hook_extra Extra arguments passed to hooked filters.
*/
$removed = apply_filters( 'upgrader_clear_destination', $removed, $local_destination, $remote_destination, $args['hook_extra'] );
if ( is_wp_error( $removed ) ) {
return $removed;
}
} elseif ( $args['abort_if_destination_exists'] && $wp_filesystem->exists( $remote_destination ) ) {
// If we're not clearing the destination folder and something exists there already, bail.
// But first check to see if there are actually any files in the folder.
$_files = $wp_filesystem->dirlist( $remote_destination );
if ( ! empty( $_files ) ) {
$wp_filesystem->delete( $remote_source, true ); // Clear out the source files.
return new WP_Error( 'folder_exists', $this->strings['folder_exists'], $remote_destination );
}
}
// Create destination if needed.
if ( ! $wp_filesystem->exists( $remote_destination ) ) {
if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) ) {
return new WP_Error( 'mkdir_failed_destination', $this->strings['mkdir_failed'], $remote_destination );
}
}
// Copy new version of item into place.
$result = copy_dir( $source, $remote_destination );
if ( is_wp_error( $result ) ) {
if ( $args['clear_working'] ) {
$wp_filesystem->delete( $remote_source, true );
}
return $result;
}
// Clear the working folder?
if ( $args['clear_working'] ) {
$wp_filesystem->delete( $remote_source, true );
}
$destination_name = basename( str_replace( $local_destination, '', $destination ) );
if ( '.' === $destination_name ) {
$destination_name = '';
}
$this->result = compact( 'source', 'source_files', 'destination', 'destination_name', 'local_destination', 'remote_destination', 'clear_destination' );
/**
* Filters the installation response after the installation has finished.
*
* @since 2.8.0
*
* @param bool $response Installation response.
* @param array $hook_extra Extra arguments passed to hooked filters.
* @param array $result Installation result data.
*/
$res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result );
if ( is_wp_error( $res ) ) {
$this->result = $res;
return $res;
}
// Bombard the calling function will all the info which we've just used.
return $this->result;
}
/**
* Run an upgrade/installation.
*
* Attempts to download the package (if it is not a local file), unpack it, and
* install it in the destination folder.
*
* @since 2.8.0
*
* @param array $options {
* Array or string of arguments for upgrading/installing a package.
*
* @type string $package The full path or URI of the package to install.
* Default empty.
* @type string $destination The full path to the destination folder.
* Default empty.
* @type bool $clear_destination Whether to delete any files already in the
* destination folder. Default false.
* @type bool $clear_working Whether to delete the files from the working
* directory after copying them to the destination.
* Default false.
* @type bool $abort_if_destination_exists Whether to abort the installation if the destination
* folder already exists. When true, `$clear_destination`
* should be false. Default true.
* @type bool $is_multi Whether this run is one of multiple upgrade/installation
* actions being performed in bulk. When true, the skin
* WP_Upgrader::header() and WP_Upgrader::footer()
* aren't called. Default false.
* @type array $hook_extra Extra arguments to pass to the filter hooks called by
* WP_Upgrader::run().
* }
* @return array|false|WP_Error The result from self::install_package() on success, otherwise a WP_Error,
* or false if unable to connect to the filesystem.
*/
public function run( $options ) {
$defaults = array(
'package' => '', // Please always pass this.
'destination' => '', // ...and this.
'clear_destination' => false,
'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please.
'clear_working' => true,
'is_multi' => false,
'hook_extra' => array(), // Pass any extra $hook_extra args here, this will be passed to any hooked filters.
);
$options = wp_parse_args( $options, $defaults );
/**
* Filters the package options before running an update.
*
* See also {@see 'upgrader_process_complete'}.
*
* @since 4.3.0
*
* @param array $options {
* Options used by the upgrader.
*
* @type string $package Package for update.
* @type string $destination Update location.
* @type bool $clear_destination Clear the destination resource.
* @type bool $clear_working Clear the working resource.
* @type bool $abort_if_destination_exists Abort if the Destination directory exists.
* @type bool $is_multi Whether the upgrader is running multiple times.
* @type array $hook_extra {
* Extra hook arguments.
*
* @type string $action Type of action. Default 'update'.
* @type string $type Type of update process. Accepts 'plugin', 'theme', or 'core'.
* @type bool $bulk Whether the update process is a bulk update. Default true.
* @type string $plugin Path to the plugin file relative to the plugins directory.
* @type string $theme The stylesheet or template name of the theme.
* @type string $language_update_type The language pack update type. Accepts 'plugin', 'theme',
* or 'core'.
* @type object $language_update The language pack update offer.
* }
* }
*/
$options = apply_filters( 'upgrader_package_options', $options );
if ( ! $options['is_multi'] ) { // Call $this->header separately if running multiple times.
$this->skin->header();
}
// Connect to the filesystem first.
$res = $this->fs_connect( array( WP_CONTENT_DIR, $options['destination'] ) );
// Mainly for non-connected filesystem.
if ( ! $res ) {
if ( ! $options['is_multi'] ) {
$this->skin->footer();
}
return false;
}
$this->skin->before();
if ( is_wp_error( $res ) ) {
$this->skin->error( $res );
$this->skin->after();
if ( ! $options['is_multi'] ) {
$this->skin->footer();
}
return $res;
}
/*
* Download the package. Note: If the package is the full path
* to an existing local file, it will be returned untouched.
*/
$download = $this->download_package( $options['package'], true, $options['hook_extra'] );
// Allow for signature soft-fail.
// WARNING: This may be removed in the future.
if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) {
// Don't output the 'no signature could be found' failure message for now.
if ( 'signature_verification_no_signature' !== $download->get_error_code() || WP_DEBUG ) {
// Output the failure error as a normal feedback, and not as an error.
$this->skin->feedback( $download->get_error_message() );
// Report this failure back to WordPress.org for debugging purposes.
wp_version_check(
array(
'signature_failure_code' => $download->get_error_code(),
'signature_failure_data' => $download->get_error_data(),
)
);
}
// Pretend this error didn't happen.
$download = $download->get_error_data( 'softfail-filename' );
}
if ( is_wp_error( $download ) ) {
$this->skin->error( $download );
$this->skin->after();
if ( ! $options['is_multi'] ) {
$this->skin->footer();
}
return $download;
}
$delete_package = ( $download !== $options['package'] ); // Do not delete a "local" file.
// Unzips the file into a temporary directory.
$working_dir = $this->unpack_package( $download, $delete_package );
if ( is_wp_error( $working_dir ) ) {
$this->skin->error( $working_dir );
$this->skin->after();
if ( ! $options['is_multi'] ) {
$this->skin->footer();
}
return $working_dir;
}
// With the given options, this installs it to the destination directory.
$result = $this->install_package(
array(
'source' => $working_dir,
'destination' => $options['destination'],
'clear_destination' => $options['clear_destination'],
'abort_if_destination_exists' => $options['abort_if_destination_exists'],
'clear_working' => $options['clear_working'],
'hook_extra' => $options['hook_extra'],
)
);
/**
* Filters the result of WP_Upgrader::install_package().
*
* @since 5.7.0
*
* @param array|WP_Error $result Result from WP_Upgrader::install_package().
* @param array $hook_extra Extra arguments passed to hooked filters.
*/
$result = apply_filters( 'upgrader_install_package_result', $result, $options['hook_extra'] );
$this->skin->set_result( $result );
if ( is_wp_error( $result ) ) {
$this->skin->error( $result );
if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) {
$this->skin->feedback( 'process_failed' );
}
} else {
// Installation succeeded.
$this->skin->feedback( 'process_success' );
}
$this->skin->after();
if ( ! $options['is_multi'] ) {
/**
* Fires when the upgrader process is complete.
*
* See also {@see 'upgrader_package_options'}.
*
* @since 3.6.0
* @since 3.7.0 Added to WP_Upgrader::run().
* @since 4.6.0 `$translations` was added as a possible argument to `$hook_extra`.
*
* @param WP_Upgrader $upgrader WP_Upgrader instance. In other contexts this might be a
* Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance.
* @param array $hook_extra {
* Array of bulk item update data.
*
* @type string $action Type of action. Default 'update'.
* @type string $type Type of update process. Accepts 'plugin', 'theme', 'translation', or 'core'.
* @type bool $bulk Whether the update process is a bulk update. Default true.
* @type array $plugins Array of the basename paths of the plugins' main files.
* @type array $themes The theme slugs.
* @type array $translations {
* Array of translations update data.
*
* @type string $language The locale the translation is for.
* @type string $type Type of translation. Accepts 'plugin', 'theme', or 'core'.
* @type string $slug Text domain the translation is for. The slug of a theme/plugin or
* 'default' for core translations.
* @type string $version The version of a theme, plugin, or core.
* }
* }
*/
do_action( 'upgrader_process_complete', $this, $options['hook_extra'] );
$this->skin->footer();
}
return $result;
}
/**
* Toggle maintenance mode for the site.
*
* Creates/deletes the maintenance file to enable/disable maintenance mode.
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
*
* @param bool $enable True to enable maintenance mode, false to disable.
*/
public function maintenance_mode( $enable = false ) {
global $wp_filesystem;
$file = $wp_filesystem->abspath() . '.maintenance';
if ( $enable ) {
$this->skin->feedback( 'maintenance_start' );
// Create maintenance file to signal that we are upgrading.
$maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
$wp_filesystem->delete( $file );
$wp_filesystem->put_contents( $file, $maintenance_string, FS_CHMOD_FILE );
} elseif ( ! $enable && $wp_filesystem->exists( $file ) ) {
$this->skin->feedback( 'maintenance_end' );
$wp_filesystem->delete( $file );
}
}
/**
* Creates a lock using WordPress options.
*
* @since 4.5.0
*
* @param string $lock_name The name of this unique lock.
* @param int $release_timeout Optional. The duration in seconds to respect an existing lock.
* Default: 1 hour.
* @return bool False if a lock couldn't be created or if the lock is still valid. True otherwise.
*/
public static function create_lock( $lock_name, $release_timeout = null ) {
global $wpdb;
if ( ! $release_timeout ) {
$release_timeout = HOUR_IN_SECONDS;
}
$lock_option = $lock_name . '.lock';
// Try to lock.
$lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_option, time() ) );
if ( ! $lock_result ) {
$lock_result = get_option( $lock_option );
// If a lock couldn't be created, and there isn't a lock, bail.
if ( ! $lock_result ) {
return false;
}
// Check to see if the lock is still valid. If it is, bail.
if ( $lock_result > ( time() - $release_timeout ) ) {
return false;
}
// There must exist an expired lock, clear it and re-gain it.
WP_Upgrader::release_lock( $lock_name );
return WP_Upgrader::create_lock( $lock_name, $release_timeout );
}
// Update the lock, as by this point we've definitely got a lock, just need to fire the actions.
update_option( $lock_option, time() );
return true;
}
/**
* Releases an upgrader lock.
*
* @since 4.5.0
*
* @see WP_Upgrader::create_lock()
*
* @param string $lock_name The name of this unique lock.
* @return bool True if the lock was successfully released. False on failure.
*/
public static function release_lock( $lock_name ) {
return delete_option( $lock_name . '.lock' );
}
}
/** Plugin_Upgrader class */
require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php';
/** Theme_Upgrader class */
require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php';
/** Language_Pack_Upgrader class */
require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php';
/** Core_Upgrader class */
require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php';
/** File_Upload_Upgrader class */
require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php';
/** WP_Automatic_Updater class */
require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
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