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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 / #[AllowDynamicProperties] 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; /* * Stores the list of plugins or themes added to temporary backup directory. * * Used by the rollback functions. * * @since 6.3.0 * @var array / private $temp_backups = array(); /* * Stores the list of plugins or themes to be restored from temporary backup directory. * * Used by the rollback functions. * * @since 6.3.0 * @var array / private $temp_restores = array(); /* * 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 = $skin; } } /* * Initializes the upgrader. * * This will set the relationship between the skin being used and this upgrader, * and also add the generic strings to `WP_Upgrader::$strings`. * * Additionally, it will schedule a weekly task to clean up the temporary backup directory. * * @since 2.8.0 * @since 6.3.0 Added the `schedule_temp_backup_cleanup()` task. / public function init() { $this->skin->set_upgrader( $this ); $this->generic_strings(); if ( ! wp_installing() ) { $this->schedule_temp_backup_cleanup(); } } /* * Schedules the cleanup of the temporary backup directory. * * @since 6.3.0 / protected function schedule_temp_backup_cleanup() { if ( false === wp_next_scheduled( 'wp_delete_temp_updater_backups' ) ) { wp_schedule_event( time(), 'weekly', 'wp_delete_temp_updater_backups' ); } } /* * Adds the generic strings to WP_Upgrader::$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.' ); / translators: %s: Directory name. / $this->strings['fs_no_content_dir'] = sprintf( __( 'Unable to locate WordPress content directory (%s).' ), '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['no_package'] = __( 'Package not available.' ); $this->strings['download_failed'] = __( 'Download failed.' ); $this->strings['installing_package'] = __( 'Installing the latest version…' ); $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 some files could not be copied. This is usually due to inconsistent file permissions.' ); $this->strings['maintenance_start'] = __( 'Enabling Maintenance mode…' ); $this->strings['maintenance_end'] = __( 'Disabling Maintenance mode…' ); / translators: %s: upgrade-temp-backup / $this->strings['temp_backup_mkdir_failed'] = sprintf( __( 'Could not create the %s directory.' ), 'upgrade-temp-backup' ); / translators: %s: upgrade-temp-backup / $this->strings['temp_backup_move_failed'] = sprintf( __( 'Could not move the old version to the %s directory.' ), 'upgrade-temp-backup' ); / translators: %s: The plugin or theme slug. / $this->strings['temp_backup_restore_failed'] = __( 'Could not restore the original version of %s.' ); / translators: %s: The plugin or theme slug. / $this->strings['temp_backup_delete_failed'] = __( 'Could not delete the temporary backup directory for %s.' ); } /* * Connects 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( $dir ) ) ) ); } break; } } return true; } /* * Downloads a package. * * @since 2.8.0 * @since 5.2.0 Added the `$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; } /* * Unpacks 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' ); if ( ! $wp_filesystem->wp_content_dir() ) { return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); } $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; } /* * Flattens 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 * @since 6.2.0 Use move_dir() instead of copy_dir() when possible. * * @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']; if ( function_exists( 'set_time_limit' ) ) { set_time_limit( 300 ); } if ( ( ! is_string( $source ) \|\| '' === $source \|\| trim( $source ) !== $source ) \|\| ( ! is_string( $destination ) \|\| '' === $destination \|\| trim( $destination ) !== $destination ) ) { return new WP_Error( 'bad_request', $this->strings['bad_request'] ); } $this->skin->feedback( 'installing_package' ); /* * Filters the installation 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 Installation 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; } if ( ! empty( $args['hook_extra']['temp_backup'] ) ) { $temp_backup = $this->move_to_temp_backup_dir( $args['hook_extra']['temp_backup'] ); if ( is_wp_error( $temp_backup ) ) { return $temp_backup; } $this->temp_backups[] = $args['hook_extra']['temp_backup']; } // 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 ); } } / * If 'clear_working' is false, the source should not be removed, so use copy_dir() instead. * * Partial updates, like language packs, may want to retain the destination. * If the destination exists or has contents, this may be a partial update, * and the destination should not be removed, so use copy_dir() instead. / if ( $args['clear_working'] && ( // Destination does not exist or has no contents. ! $wp_filesystem->exists( $remote_destination ) \|\| empty( $wp_filesystem->dirlist( $remote_destination ) ) ) ) { $result = move_dir( $source, $remote_destination, true ); } else { // 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 ); } } $result = copy_dir( $source, $remote_destination ); } // Clear the working directory? if ( $args['clear_working'] ) { $wp_filesystem->delete( $remote_source, true ); } if ( is_wp_error( $result ) ) { return $result; } $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; } /* * Runs 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 true. * @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, 'clear_working' => true, 'abort_if_destination_exists' => true, // Abort if the destination directory exists. Pass clear_destination as false please. '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'], false, $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 ) ) { // An automatic plugin update will have already performed its rollback. if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { $this->temp_restores[] = $options['hook_extra']['temp_backup']; / * Restore the backup on shutdown. * Actions running on `shutdown` are immune to PHP timeouts, * so in case the failure was due to a PHP timeout, * it will still be able to properly restore the previous version. * * Zero arguments are accepted as a string can sometimes be passed * internally during actions, causing an error because * `WP_Upgrader::restore_temp_backup()` expects an array. / add_action( 'shutdown', array( $this, 'restore_temp_backup' ), 10, 0 ); } $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(); // Clean up the backup kept in the temporary backup directory. if ( ! empty( $options['hook_extra']['temp_backup'] ) ) { // Delete the backup on `shutdown` to avoid a PHP timeout. add_action( 'shutdown', array( $this, 'delete_temp_backup' ), 100, 0 ); } 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; } /* * Toggles 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; if ( ! $wp_filesystem ) { require_once ABSPATH . 'wp-admin/includes/file.php'; WP_Filesystem(); } $file = $wp_filesystem->abspath() . '.maintenance'; if ( $enable ) { if ( ! wp_doing_cron() ) { $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 ) ) { if ( ! wp_doing_cron() ) { $this->skin->feedback( 'maintenance_end' ); } $wp_filesystem->delete( $file ); } } /* * Creates a lock using WordPress options. * * @since 4.5.0 * * @global wpdb $wpdb The WordPress database abstraction object. * * @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, 'off') / 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' ); } /* * Moves the plugin or theme being updated into a temporary backup directory. * * @since 6.3.0 * * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. * * @param string[] $args { * Array of data for the temporary backup. * * @type string $slug Plugin or theme slug. * @type string $src Path to the root directory for plugins or themes. * @type string $dir Destination subdirectory name. Accepts 'plugins' or 'themes'. * } * * @return bool\|WP_Error True on success, false on early exit, otherwise WP_Error. / public function move_to_temp_backup_dir( $args ) { global $wp_filesystem; if ( empty( $args['slug'] ) \|\| empty( $args['src'] ) \|\| empty( $args['dir'] ) ) { return false; } / * Skip any plugin that has "." as its slug. * A slug of "." will result in a `$src` value ending in a period. * * On Windows, this will cause the 'plugins' folder to be moved, * and will cause a failure when attempting to call `mkdir()`. / if ( '.' === $args['slug'] ) { return false; } if ( ! $wp_filesystem->wp_content_dir() ) { return new WP_Error( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); } $dest_dir = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/'; $sub_dir = $dest_dir . $args['dir'] . '/'; // Create the temporary backup directory if it does not exist. if ( ! $wp_filesystem->is_dir( $sub_dir ) ) { if ( ! $wp_filesystem->is_dir( $dest_dir ) ) { $wp_filesystem->mkdir( $dest_dir, FS_CHMOD_DIR ); } if ( ! $wp_filesystem->mkdir( $sub_dir, FS_CHMOD_DIR ) ) { // Could not create the backup directory. return new WP_Error( 'fs_temp_backup_mkdir', $this->strings['temp_backup_mkdir_failed'] ); } } $src_dir = $wp_filesystem->find_folder( $args['src'] ); $src = trailingslashit( $src_dir ) . $args['slug']; $dest = $dest_dir . trailingslashit( $args['dir'] ) . $args['slug']; // Delete the temporary backup directory if it already exists. if ( $wp_filesystem->is_dir( $dest ) ) { $wp_filesystem->delete( $dest, true ); } // Move to the temporary backup directory. $result = move_dir( $src, $dest, true ); if ( is_wp_error( $result ) ) { return new WP_Error( 'fs_temp_backup_move', $this->strings['temp_backup_move_failed'] ); } return true; } /* * Restores the plugin or theme from temporary backup. * * @since 6.3.0 * @since 6.6.0 Added the `$temp_backups` parameter. * * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. * * @param array[] $temp_backups { * Optional. An array of temporary backups. * * @type array ...$0 { * Information about the backup. * * @type string $dir The temporary backup location in the upgrade-temp-backup directory. * @type string $slug The item's slug. * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. * } * } * @return bool\|WP_Error True on success, false on early exit, otherwise WP_Error. / public function restore_temp_backup( array $temp_backups = array() ) { global $wp_filesystem; $errors = new WP_Error(); if ( empty( $temp_backups ) ) { $temp_backups = $this->temp_restores; } foreach ( $temp_backups as $args ) { if ( empty( $args['slug'] ) \|\| empty( $args['src'] ) \|\| empty( $args['dir'] ) ) { return false; } if ( ! $wp_filesystem->wp_content_dir() ) { $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); return $errors; } $src = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/' . $args['dir'] . '/' . $args['slug']; $dest_dir = $wp_filesystem->find_folder( $args['src'] ); $dest = trailingslashit( $dest_dir ) . $args['slug']; if ( $wp_filesystem->is_dir( $src ) ) { // Cleanup. if ( $wp_filesystem->is_dir( $dest ) && ! $wp_filesystem->delete( $dest, true ) ) { $errors->add( 'fs_temp_backup_delete', sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) ); continue; } // Move it. $result = move_dir( $src, $dest, true ); if ( is_wp_error( $result ) ) { $errors->add( 'fs_temp_backup_delete', sprintf( $this->strings['temp_backup_restore_failed'], $args['slug'] ) ); continue; } } } return $errors->has_errors() ? $errors : true; } /* * Deletes a temporary backup. * * @since 6.3.0 * @since 6.6.0 Added the `$temp_backups` parameter. * * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. * * @param array[] $temp_backups { * Optional. An array of temporary backups. * * @type array ...$0 { * Information about the backup. * * @type string $dir The temporary backup location in the upgrade-temp-backup directory. * @type string $slug The item's slug. * @type string $src The directory where the original is stored. For example, `WP_PLUGIN_DIR`. * } * } * @return bool\|WP_Error True on success, false on early exit, otherwise WP_Error. / public function delete_temp_backup( array $temp_backups = array() ) { global $wp_filesystem; $errors = new WP_Error(); if ( empty( $temp_backups ) ) { $temp_backups = $this->temp_backups; } foreach ( $temp_backups as $args ) { if ( empty( $args['slug'] ) \|\| empty( $args['dir'] ) ) { return false; } if ( ! $wp_filesystem->wp_content_dir() ) { $errors->add( 'fs_no_content_dir', $this->strings['fs_no_content_dir'] ); return $errors; } $temp_backup_dir = $wp_filesystem->wp_content_dir() . "upgrade-temp-backup/{$args['dir']}/{$args['slug']}"; if ( ! $wp_filesystem->delete( $temp_backup_dir, true ) ) { $errors->add( 'temp_backup_delete_failed', sprintf( $this->strings['temp_backup_delete_failed'], $args['slug'] ) ); continue; } } return $errors->has_errors() ? $errors : true; } } /* 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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