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<?php
/**
* A File upgrader class for WordPress.
*
* This set of classes are designed to be used to upgrade/install a local set of files on the filesystem via the Filesystem Abstraction classes.
*
* @link https://core.trac.wordpress.org/ticket/7875 consolidate plugin/theme/core upgrade/install functions
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
require ABSPATH . 'wp-admin/includes/class-wp-upgrader-skins.php';
/**
* WordPress Upgrader class for Upgrading/Installing a local set of files via the Filesystem Abstraction classes from a Zip file.
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
class WP_Upgrader {
/**
* The error/notification strings used to update the user on the progress.
*
* @since 2.8.0
* @var string $strings
*/
public $strings = array();
/**
* The upgrader skin being used.
*
* @since 2.8.0
* @var WP_Upgrader_Skin $skin
*/
public $skin = null;
/**
* The result of the installation.
*
* This is set by {@see WP_Upgrader::install_package()}, only when the package is installed
* successfully. It will then be an array, unless a {@see 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 WP_Error|array $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 install 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 {@see 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['maintenance_start'] = __('Enabling Maintenance mode&#8230;');
$this->strings['maintenance_end'] = __('Disabling Maintenance mode&#8230;');
}
/**
* Connect to the filesystem.
*
* @since 2.8.0
*
* @param array $directories Optional. A list of directories. If any of these do
* not exist, a {@see 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 {@see WP_Error} otherwise.
*/
public function fs_connect( $directories = array(), $allow_relaxed_file_ownership = false ) {
global $wp_filesystem;
if ( false === ( $credentials = $this->skin->request_filesystem_credentials( false, $directories[0], $allow_relaxed_file_ownership ) ) ) {
return false;
}
if ( ! WP_Filesystem( $credentials, $directories[0], $allow_relaxed_file_ownership ) ) {
$error = true;
if ( is_object($wp_filesystem) && $wp_filesystem->errors->get_error_code() )
$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->get_error_code() )
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;
} //end fs_connect();
/**
* Download a package.
*
* @since 2.8.0
*
* @param string $package The URI of the package. If this is the full path to an
* existing local file, it will be returned untouched.
* @return string|WP_Error The full path to the downloaded package file, or a {@see WP_Error} object.
*/
public function download_package( $package ) {
/**
* Filter whether to return the package.
*
* @since 3.7.0
*
* @param bool $reply Whether to bail without returning the package.
* Default false.
* @param string $package The package file name.
* @param WP_Upgrader $this The WP_Upgrader instance.
*/
$reply = apply_filters( 'upgrader_pre_download', false, $package, $this );
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);
if ( is_wp_error($download_file) )
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
*
* @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 {@see 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;
}
/**
* Install a package.
*
* Copies the contents of a package form 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
*
* @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 form the working directory
* after copying 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 $hook_extra Extra arguments to pass to the filter hooks called by
* {@see WP_Upgrader::install_package()}. Default empty array.
* }
*
* @return array|WP_Error The result (also stored in `WP_Upgrader:$result`), or a {@see 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' );
/**
* Filter the install response before the installation has started.
*
* Returning a truthy value, or one 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 ( count( $source_files ) == 0 ) {
return new WP_Error( 'incompatible_archive_empty', $this->strings['incompatible_archive'], $this->strings['no_files'] ); // There are no files?
} else { //It's only a single file, the upgrader will use the foldername of this file as the destination folder. foldername is based on zip filename.
$source = trailingslashit( $args['source'] );
}
/**
* Filter the source file location for the upgrade package.
*
* @since 2.8.0
*
* @param string $source File source location.
* @param string $remote_source Remove file source location.
* @param WP_Upgrader $this WP_Upgrader instance.
*/
$source = apply_filters( 'upgrader_source_selection', $source, $remote_source, $this );
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 ) ) {
$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 = true;
if ( $wp_filesystem->exists( $remote_destination ) ) {
$removed = $wp_filesystem->delete( $remote_destination, true );
}
/**
* Filter whether the upgrader cleared the destination.
*
* @since 2.8.0
*
* @param bool $removed Whether the destination was cleared.
* @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 ( ! $removed ) {
return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
}
} 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' );
/**
* Filter the install response after the installation has finished.
*
* @since 2.8.0
*
* @param bool $response Install 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/install.
*
* 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 form the working
* directory after copying 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/install
* actions being performed in bulk. When true, the skin
* {@see WP_Upgrader::header()} and {@see WP_Upgrader::footer()}
* aren't called. Default false.
* @type array $hook_extra Extra arguments to pass to the filter hooks called by
* {@see 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 );
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, This just returns the filename of the file if the package is a local file)
$download = $this->download_package( $options['package'] );
if ( is_wp_error($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']
) );
$this->skin->set_result($result);
if ( is_wp_error($result) ) {
$this->skin->error($result);
$this->skin->feedback('process_failed');
} else {
//Install Succeeded
$this->skin->feedback('process_success');
}
$this->skin->after();
if ( ! $options['is_multi'] ) {
/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
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
*
* @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);
}
}
}
/**
* Plugin Upgrader class for WordPress Plugins, It is designed to upgrade/install plugins from a local zip, remote zip URL, or uploaded zip file.
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
class Plugin_Upgrader extends WP_Upgrader {
/**
* Plugin upgrade result.
*
* @since 2.8.0
* @var array|WP_Error $result
* @see WP_Upgrader::$result
*/
public $result;
/**
* Whether a bulk upgrade/install is being performed.
*
* @since 2.9.0
* @var bool $bulk
*/
public $bulk = false;
/**
* Initialize the upgrade strings.
*
* @since 2.8.0
*/
public function upgrade_strings() {
$this->strings['up_to_date'] = __('The plugin is at the latest version.');
$this->strings['no_package'] = __('Update package not available.');
$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
$this->strings['remove_old'] = __('Removing the old version of the plugin&#8230;');
$this->strings['remove_old_failed'] = __('Could not remove the old plugin.');
$this->strings['process_failed'] = __('Plugin update failed.');
$this->strings['process_success'] = __('Plugin updated successfully.');
$this->strings['process_bulk_success'] = __('Plugins updated successfully.');
}
/**
* Initialize the install strings.
*
* @since 2.8.0
*/
public function install_strings() {
$this->strings['no_package'] = __('Install package not available.');
$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
$this->strings['unpack_package'] = __('Unpacking the package&#8230;');
$this->strings['installing_package'] = __('Installing the plugin&#8230;');
$this->strings['no_files'] = __('The plugin contains no files.');
$this->strings['process_failed'] = __('Plugin install failed.');
$this->strings['process_success'] = __('Plugin installed successfully.');
}
/**
* Install a plugin package.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
*
* @param string $package The full local path or URI of the package.
* @param array $args {
* Optional. Other arguments for installing a plugin package. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
* Default true.
* }
*
* @return bool|WP_Error True if the install was successful, false or a WP_Error otherwise.
*/
public function install( $package, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->install_strings();
add_filter('upgrader_source_selection', array($this, 'check_package') );
$this->run( array(
'package' => $package,
'destination' => WP_PLUGIN_DIR,
'clear_destination' => false, // Do not overwrite files.
'clear_working' => true,
'hook_extra' => array(
'type' => 'plugin',
'action' => 'install',
)
) );
remove_filter('upgrader_source_selection', array($this, 'check_package') );
if ( ! $this->result || is_wp_error($this->result) )
return $this->result;
// Force refresh of plugin update information
wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );
return true;
}
/**
* Upgrade a plugin.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
*
* @param string $plugin The basename path to the main plugin file.
* @param array $args {
* Optional. Other arguments for upgrading a plugin package. Defualt empty array.
*
* @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
* Default true.
* }
* @return bool|WP_Error True if the upgrade was successful, false or a {@see WP_Error} object otherwise.
*/
public function upgrade( $plugin, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
$current = get_site_transient( 'update_plugins' );
if ( !isset( $current->response[ $plugin ] ) ) {
$this->skin->before();
$this->skin->set_result(false);
$this->skin->error('up_to_date');
$this->skin->after();
return false;
}
// Get the URL to the zip file
$r = $current->response[ $plugin ];
add_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'), 10, 2);
add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);
//'source_selection' => array($this, 'source_selection'), //there's a trac ticket to move up the directory for zip's which are made a bit differently, useful for non-.org plugins.
$this->run( array(
'package' => $r->package,
'destination' => WP_PLUGIN_DIR,
'clear_destination' => true,
'clear_working' => true,
'hook_extra' => array(
'plugin' => $plugin,
'type' => 'plugin',
'action' => 'update',
),
) );
// Cleanup our hooks, in case something else does a upgrade on this connection.
remove_filter('upgrader_pre_install', array($this, 'deactivate_plugin_before_upgrade'));
remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));
if ( ! $this->result || is_wp_error($this->result) )
return $this->result;
// Force refresh of plugin update information
wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );
return true;
}
/**
* Bulk upgrade several plugins at once.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
*
* @param array $plugins Array of the basename paths of the plugins' main files.
* @param array $args {
* Optional. Other arguments for upgrading several plugins at once. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the plugin updates cache if successful.
* Default true.
* }
*
* @return array|false An array of results indexed by plugin file, or false if unable to connect to the filesystem.
*/
public function bulk_upgrade( $plugins, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->bulk = true;
$this->upgrade_strings();
$current = get_site_transient( 'update_plugins' );
add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);
$this->skin->header();
// Connect to the Filesystem first.
$res = $this->fs_connect( array(WP_CONTENT_DIR, WP_PLUGIN_DIR) );
if ( ! $res ) {
$this->skin->footer();
return false;
}
$this->skin->bulk_header();
// Only start maintenance mode if:
// - running Multisite and there are one or more plugins specified, OR
// - a plugin with an update available is currently active.
// @TODO: For multisite, maintenance mode should only kick in for individual sites if at all possible.
$maintenance = ( is_multisite() && ! empty( $plugins ) );
foreach ( $plugins as $plugin )
$maintenance = $maintenance || ( is_plugin_active( $plugin ) && isset( $current->response[ $plugin] ) );
if ( $maintenance )
$this->maintenance_mode(true);
$results = array();
$this->update_count = count($plugins);
$this->update_current = 0;
foreach ( $plugins as $plugin ) {
$this->update_current++;
$this->skin->plugin_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin, false, true);
if ( !isset( $current->response[ $plugin ] ) ) {
$this->skin->set_result('up_to_date');
$this->skin->before();
$this->skin->feedback('up_to_date');
$this->skin->after();
$results[$plugin] = true;
continue;
}
// Get the URL to the zip file
$r = $current->response[ $plugin ];
$this->skin->plugin_active = is_plugin_active($plugin);
$result = $this->run( array(
'package' => $r->package,
'destination' => WP_PLUGIN_DIR,
'clear_destination' => true,
'clear_working' => true,
'is_multi' => true,
'hook_extra' => array(
'plugin' => $plugin
)
) );
$results[$plugin] = $this->result;
// Prevent credentials auth screen from displaying multiple times
if ( false === $result )
break;
} //end foreach $plugins
$this->maintenance_mode(false);
/**
* Fires when the bulk upgrader process is complete.
*
* @since 3.6.0
*
* @param Plugin_Upgrader $this Plugin_Upgrader instance. In other contexts, $this, might
* be a Theme_Upgrader or Core_Upgrade instance.
* @param array $data {
* Array of bulk item update data.
*
* @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 array $packages Array of plugin, theme, or core packages to update.
* }
*/
do_action( 'upgrader_process_complete', $this, array(
'action' => 'update',
'type' => 'plugin',
'bulk' => true,
'plugins' => $plugins,
) );
$this->skin->bulk_footer();
$this->skin->footer();
// Cleanup our hooks, in case something else does a upgrade on this connection.
remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));
// Force refresh of plugin update information
wp_clean_plugins_cache( $parsed_args['clear_update_cache'] );
return $results;
}
/**
* Check a source package to be sure it contains a plugin.
*
* This function is added to the {@see 'upgrader_source_selection'} filter by
* {@see Plugin_Upgrader::install()}.
*
* @since 3.3.0
*
* @param string $source The path to the downloaded package source.
* @return string|WP_Error The source as passed, or a {@see WP_Error} object if no plugins were found.
*/
public function check_package($source) {
global $wp_filesystem;
if ( is_wp_error($source) )
return $source;
$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, let's not prevent installation.
return $source;
// Check the folder contains at least 1 valid plugin.
$plugins_found = false;
foreach ( glob( $working_directory . '*.php' ) as $file ) {
$info = get_plugin_data($file, false, false);
if ( !empty( $info['Name'] ) ) {
$plugins_found = true;
break;
}
}
if ( ! $plugins_found )
return new WP_Error( 'incompatible_archive_no_plugins', $this->strings['incompatible_archive'], __( 'No valid plugins were found.' ) );
return $source;
}
/**
* Retrieve the path to the file that contains the plugin info.
*
* This isn't used internally in the class, but is called by the skins.
*
* @since 2.8.0
*
* @return string|false The full path to the main plugin file, or false.
*/
public function plugin_info() {
if ( ! is_array($this->result) )
return false;
if ( empty($this->result['destination_name']) )
return false;
$plugin = get_plugins('/' . $this->result['destination_name']); //Ensure to pass with leading slash
if ( empty($plugin) )
return false;
$pluginfiles = array_keys($plugin); //Assume the requested plugin is the first in the list
return $this->result['destination_name'] . '/' . $pluginfiles[0];
}
/**
* Deactivates a plugin before it is upgraded.
*
* Hooked to the {@see 'upgrader_pre_install'} filter by {@see Plugin_Upgrader::upgrade()}.
*
* @since 2.8.0
* @since 4.1.0 Added a return value.
*
* @param bool|WP_Error $return Upgrade offer return.
* @param array $plugin Plugin package arguments.
* @return bool|WP_Error The passed in $return param or {@see WP_Error}.
*/
public function deactivate_plugin_before_upgrade($return, $plugin) {
if ( is_wp_error($return) ) //Bypass.
return $return;
// When in cron (background updates) don't deactivate the plugin, as we require a browser to reactivate it
if ( defined( 'DOING_CRON' ) && DOING_CRON )
return $return;
$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
if ( empty($plugin) )
return new WP_Error('bad_request', $this->strings['bad_request']);
if ( is_plugin_active($plugin) ) {
//Deactivate the plugin silently, Prevent deactivation hooks from running.
deactivate_plugins($plugin, true);
}
return $return;
}
/**
* Delete the old plugin during an upgrade.
*
* Hooked to the {@see 'upgrader_clear_destination'} filter by
* {@see Plugin_Upgrader::upgrade()} and {@see Plugin_Upgrader::bulk_upgrade()}.
*
* @since 2.8.0
*/
public function delete_old_plugin($removed, $local_destination, $remote_destination, $plugin) {
global $wp_filesystem;
if ( is_wp_error($removed) )
return $removed; //Pass errors through.
$plugin = isset($plugin['plugin']) ? $plugin['plugin'] : '';
if ( empty($plugin) )
return new WP_Error('bad_request', $this->strings['bad_request']);
$plugins_dir = $wp_filesystem->wp_plugins_dir();
$this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin) );
if ( ! $wp_filesystem->exists($this_plugin_dir) ) //If it's already vanished.
return $removed;
// If plugin is in its own directory, recursively delete the directory.
if ( strpos($plugin, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory separator AND that it's not the root plugin folder
$deleted = $wp_filesystem->delete($this_plugin_dir, true);
else
$deleted = $wp_filesystem->delete($plugins_dir . $plugin);
if ( ! $deleted )
return new WP_Error('remove_old_failed', $this->strings['remove_old_failed']);
return true;
}
}
/**
* Theme Upgrader class for WordPress Themes, It is designed to upgrade/install themes from a local zip, remote zip URL, or uploaded zip file.
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
class Theme_Upgrader extends WP_Upgrader {
/**
* Result of the theme upgrade offer.
*
* @since 2.8.0
* @var array|WP_Erorr $result
* @see WP_Upgrader::$result
*/
public $result;
/**
* Whether multiple plugins are being upgraded/installed in bulk.
*
* @since 2.9.0
* @var bool $bulk
*/
public $bulk = false;
/**
* Initialize the upgrade strings.
*
* @since 2.8.0
*/
public function upgrade_strings() {
$this->strings['up_to_date'] = __('The theme is at the latest version.');
$this->strings['no_package'] = __('Update package not available.');
$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
$this->strings['remove_old'] = __('Removing the old version of the theme&#8230;');
$this->strings['remove_old_failed'] = __('Could not remove the old theme.');
$this->strings['process_failed'] = __('Theme update failed.');
$this->strings['process_success'] = __('Theme updated successfully.');
}
/**
* Initialize the install strings.
*
* @since 2.8.0
*/
public function install_strings() {
$this->strings['no_package'] = __('Install package not available.');
$this->strings['downloading_package'] = __('Downloading install package from <span class="code">%s</span>&#8230;');
$this->strings['unpack_package'] = __('Unpacking the package&#8230;');
$this->strings['installing_package'] = __('Installing the theme&#8230;');
$this->strings['no_files'] = __('The theme contains no files.');
$this->strings['process_failed'] = __('Theme install failed.');
$this->strings['process_success'] = __('Theme installed successfully.');
/* translators: 1: theme name, 2: version */
$this->strings['process_success_specific'] = __('Successfully installed the theme <strong>%1$s %2$s</strong>.');
$this->strings['parent_theme_search'] = __('This theme requires a parent theme. Checking if it is installed&#8230;');
/* translators: 1: theme name, 2: version */
$this->strings['parent_theme_prepare_install'] = __('Preparing to install <strong>%1$s %2$s</strong>&#8230;');
/* translators: 1: theme name, 2: version */
$this->strings['parent_theme_currently_installed'] = __('The parent theme, <strong>%1$s %2$s</strong>, is currently installed.');
/* translators: 1: theme name, 2: version */
$this->strings['parent_theme_install_success'] = __('Successfully installed the parent theme, <strong>%1$s %2$s</strong>.');
$this->strings['parent_theme_not_found'] = __('<strong>The parent theme could not be found.</strong> You will need to install the parent theme, <strong>%s</strong>, before you can use this child theme.');
}
/**
* Check if a child theme is being installed and we need to install its parent.
*
* Hooked to the {@see 'upgrader_post_install'} filter by {@see Theme_Upgrader::install()}.
*
* @since 3.4.0
*/
public function check_parent_theme_filter( $install_result, $hook_extra, $child_result ) {
// Check to see if we need to install a parent theme
$theme_info = $this->theme_info();
if ( ! $theme_info->parent() )
return $install_result;
$this->skin->feedback( 'parent_theme_search' );
if ( ! $theme_info->parent()->errors() ) {
$this->skin->feedback( 'parent_theme_currently_installed', $theme_info->parent()->display('Name'), $theme_info->parent()->display('Version') );
// We already have the theme, fall through.
return $install_result;
}
// We don't have the parent theme, let's install it.
$api = themes_api('theme_information', array('slug' => $theme_info->get('Template'), 'fields' => array('sections' => false, 'tags' => false) ) ); //Save on a bit of bandwidth.
if ( ! $api || is_wp_error($api) ) {
$this->skin->feedback( 'parent_theme_not_found', $theme_info->get('Template') );
// Don't show activate or preview actions after install
add_filter('install_theme_complete_actions', array($this, 'hide_activate_preview_actions') );
return $install_result;
}
// Backup required data we're going to override:
$child_api = $this->skin->api;
$child_success_message = $this->strings['process_success'];
// Override them
$this->skin->api = $api;
$this->strings['process_success_specific'] = $this->strings['parent_theme_install_success'];//, $api->name, $api->version);
$this->skin->feedback('parent_theme_prepare_install', $api->name, $api->version);
add_filter('install_theme_complete_actions', '__return_false', 999); // Don't show any actions after installing the theme.
// Install the parent theme
$parent_result = $this->run( array(
'package' => $api->download_link,
'destination' => get_theme_root(),
'clear_destination' => false, //Do not overwrite files.
'clear_working' => true
) );
if ( is_wp_error($parent_result) )
add_filter('install_theme_complete_actions', array($this, 'hide_activate_preview_actions') );
// Start cleaning up after the parents installation
remove_filter('install_theme_complete_actions', '__return_false', 999);
// Reset child's result and data
$this->result = $child_result;
$this->skin->api = $child_api;
$this->strings['process_success'] = $child_success_message;
return $install_result;
}
/**
* Don't display the activate and preview actions to the user.
*
* Hooked to the {@see 'install_theme_complete_actions'} filter by
* {@see Theme_Upgrader::check_parent_theme_filter()} when installing
* a child theme and installing the parent theme fails.
*
* @since 3.4.0
*
* @param array $actions Preview actions.
*/
public function hide_activate_preview_actions( $actions ) {
unset($actions['activate'], $actions['preview']);
return $actions;
}
/**
* Install a theme package.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @param string $package The full local path or URI of the package.
* @param array $args {
* Optional. Other arguments for installing a theme package. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the updates cache if successful.
* Default true.
* }
*
* @return bool|WP_Error True if the install was successful, false or a {@see WP_Error} object otherwise.
*/
public function install( $package, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->install_strings();
add_filter('upgrader_source_selection', array($this, 'check_package') );
add_filter('upgrader_post_install', array($this, 'check_parent_theme_filter'), 10, 3);
$this->run( array(
'package' => $package,
'destination' => get_theme_root(),
'clear_destination' => false, //Do not overwrite files.
'clear_working' => true,
'hook_extra' => array(
'type' => 'theme',
'action' => 'install',
),
) );
remove_filter('upgrader_source_selection', array($this, 'check_package') );
remove_filter('upgrader_post_install', array($this, 'check_parent_theme_filter'));
if ( ! $this->result || is_wp_error($this->result) )
return $this->result;
// Refresh the Theme Update information
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
return true;
}
/**
* Upgrade a theme.
*
* @since 2.8.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @param string $theme The theme slug.
* @param array $args {
* Optional. Other arguments for upgrading a theme. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the update cache if successful.
* Default true.
* }
* @return bool|WP_Error True if the upgrade was successful, false or a {@see WP_Error} object otherwise.
*/
public function upgrade( $theme, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
// Is an update available?
$current = get_site_transient( 'update_themes' );
if ( !isset( $current->response[ $theme ] ) ) {
$this->skin->before();
$this->skin->set_result(false);
$this->skin->error( 'up_to_date' );
$this->skin->after();
return false;
}
$r = $current->response[ $theme ];
add_filter('upgrader_pre_install', array($this, 'current_before'), 10, 2);
add_filter('upgrader_post_install', array($this, 'current_after'), 10, 2);
add_filter('upgrader_clear_destination', array($this, 'delete_old_theme'), 10, 4);
$this->run( array(
'package' => $r['package'],
'destination' => get_theme_root( $theme ),
'clear_destination' => true,
'clear_working' => true,
'hook_extra' => array(
'theme' => $theme,
'type' => 'theme',
'action' => 'update',
),
) );
remove_filter('upgrader_pre_install', array($this, 'current_before'));
remove_filter('upgrader_post_install', array($this, 'current_after'));
remove_filter('upgrader_clear_destination', array($this, 'delete_old_theme'));
if ( ! $this->result || is_wp_error($this->result) )
return $this->result;
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
return true;
}
/**
* Upgrade several themes at once.
*
* @since 3.0.0
* @since 3.7.0 The `$args` parameter was added, making clearing the update cache optional.
*
* @param array $themes The theme slugs.
* @param array $args {
* Optional. Other arguments for upgrading several themes at once. Default empty array.
*
* @type bool $clear_update_cache Whether to clear the update cache if successful.
* Default true.
* }
* @return array[]|false An array of results, or false if unable to connect to the filesystem.
*/
public function bulk_upgrade( $themes, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->bulk = true;
$this->upgrade_strings();
$current = get_site_transient( 'update_themes' );
add_filter('upgrader_pre_install', array($this, 'current_before'), 10, 2);
add_filter('upgrader_post_install', array($this, 'current_after'), 10, 2);
add_filter('upgrader_clear_destination', array($this, 'delete_old_theme'), 10, 4);
$this->skin->header();
// Connect to the Filesystem first.
$res = $this->fs_connect( array(WP_CONTENT_DIR) );
if ( ! $res ) {
$this->skin->footer();
return false;
}
$this->skin->bulk_header();
// Only start maintenance mode if:
// - running Multisite and there are one or more themes specified, OR
// - a theme with an update available is currently in use.
// @TODO: For multisite, maintenance mode should only kick in for individual sites if at all possible.
$maintenance = ( is_multisite() && ! empty( $themes ) );
foreach ( $themes as $theme )
$maintenance = $maintenance || $theme == get_stylesheet() || $theme == get_template();
if ( $maintenance )
$this->maintenance_mode(true);
$results = array();
$this->update_count = count($themes);
$this->update_current = 0;
foreach ( $themes as $theme ) {
$this->update_current++;
$this->skin->theme_info = $this->theme_info($theme);
if ( !isset( $current->response[ $theme ] ) ) {
$this->skin->set_result(true);
$this->skin->before();
$this->skin->feedback( 'up_to_date' );
$this->skin->after();
$results[$theme] = true;
continue;
}
// Get the URL to the zip file
$r = $current->response[ $theme ];
$result = $this->run( array(
'package' => $r['package'],
'destination' => get_theme_root( $theme ),
'clear_destination' => true,
'clear_working' => true,
'is_multi' => true,
'hook_extra' => array(
'theme' => $theme
),
) );
$results[$theme] = $this->result;
// Prevent credentials auth screen from displaying multiple times
if ( false === $result )
break;
} //end foreach $plugins
$this->maintenance_mode(false);
/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
do_action( 'upgrader_process_complete', $this, array(
'action' => 'update',
'type' => 'theme',
'bulk' => true,
'themes' => $themes,
) );
$this->skin->bulk_footer();
$this->skin->footer();
// Cleanup our hooks, in case something else does a upgrade on this connection.
remove_filter('upgrader_pre_install', array($this, 'current_before'));
remove_filter('upgrader_post_install', array($this, 'current_after'));
remove_filter('upgrader_clear_destination', array($this, 'delete_old_theme'));
// Refresh the Theme Update information
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
return $results;
}
/**
* Check that the package source contains a valid theme.
*
* Hooked to the {@see 'upgrader_source_selection'} filter by {@see Theme_Upgrader::install()}.
* It will return an error if the theme doesn't have style.css or index.php
* files.
*
* @since 3.3.0
*
* @param string $source The full path to the package source.
* @return string|WP_Error The source or a WP_Error.
*/
public function check_package( $source ) {
global $wp_filesystem;
if ( is_wp_error($source) )
return $source;
// Check the folder contains a valid theme
$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit(WP_CONTENT_DIR), $source);
if ( ! is_dir($working_directory) ) // Sanity check, if the above fails, let's not prevent installation.
return $source;
// A proper archive should have a style.css file in the single subdirectory
if ( ! file_exists( $working_directory . 'style.css' ) )
return new WP_Error( 'incompatible_archive_theme_no_style', $this->strings['incompatible_archive'], __( 'The theme is missing the <code>style.css</code> stylesheet.' ) );
$info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template' ) );
if ( empty( $info['Name'] ) )
return new WP_Error( 'incompatible_archive_theme_no_name', $this->strings['incompatible_archive'], __( "The <code>style.css</code> stylesheet doesn't contain a valid theme header." ) );
// If it's not a child theme, it must have at least an index.php to be legit.
if ( empty( $info['Template'] ) && ! file_exists( $working_directory . 'index.php' ) )
return new WP_Error( 'incompatible_archive_theme_no_index', $this->strings['incompatible_archive'], __( 'The theme is missing the <code>index.php</code> file.' ) );
return $source;
}
/**
* Turn on maintenance mode before attempting to upgrade the current theme.
*
* Hooked to the {@see 'upgrader_pre_install'} filter by {@see Theme_Upgrader::upgrade()} and
* {@see Theme_Upgrader::bulk_upgrade()}.
*
* @since 2.8.0
*/
public function current_before($return, $theme) {
if ( is_wp_error($return) )
return $return;
$theme = isset($theme['theme']) ? $theme['theme'] : '';
if ( $theme != get_stylesheet() ) //If not current
return $return;
//Change to maintenance mode now.
if ( ! $this->bulk )
$this->maintenance_mode(true);
return $return;
}
/**
* Turn off maintenance mode after upgrading the current theme.
*
* Hooked to the {@see 'upgrader_post_install'} filter by {@see Theme_Upgrader::upgrade()}
* and {@see Theme_Upgrader::bulk_upgrade()}.
*
* @since 2.8.0
*/
public function current_after($return, $theme) {
if ( is_wp_error($return) )
return $return;
$theme = isset($theme['theme']) ? $theme['theme'] : '';
if ( $theme != get_stylesheet() ) // If not current
return $return;
// Ensure stylesheet name hasn't changed after the upgrade:
if ( $theme == get_stylesheet() && $theme != $this->result['destination_name'] ) {
wp_clean_themes_cache();
$stylesheet = $this->result['destination_name'];
switch_theme( $stylesheet );
}
//Time to remove maintenance mode
if ( ! $this->bulk )
$this->maintenance_mode(false);
return $return;
}
/**
* Delete the old theme during an upgrade.
*
* Hooked to the {@see 'upgrader_clear_destination'} filter by {@see Theme_Upgrader::upgrade()}
* and {@see Theme_Upgrader::bulk_upgrade()}.
*
* @since 2.8.0
*/
public function delete_old_theme( $removed, $local_destination, $remote_destination, $theme ) {
global $wp_filesystem;
if ( is_wp_error( $removed ) )
return $removed; // Pass errors through.
if ( ! isset( $theme['theme'] ) )
return $removed;
$theme = $theme['theme'];
$themes_dir = trailingslashit( $wp_filesystem->wp_themes_dir( $theme ) );
if ( $wp_filesystem->exists( $themes_dir . $theme ) ) {
if ( ! $wp_filesystem->delete( $themes_dir . $theme, true ) )
return false;
}
return true;
}
/**
* Get the WP_Theme object for a theme.
*
* @since 2.8.0
* @since 3.0.0 The `$theme` argument was added.
*
* @param string $theme The directory name of the theme. This is optional, and if not supplied,
* the directory name from the last result will be used.
* @return WP_Theme|false The theme's info object, or false `$theme` is not supplied
* and the last result isn't set.
*/
public function theme_info($theme = null) {
if ( empty($theme) ) {
if ( !empty($this->result['destination_name']) )
$theme = $this->result['destination_name'];
else
return false;
}
return wp_get_theme( $theme );
}
}
add_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
/**
* Language pack upgrader, for updating translations of plugins, themes, and core.
*
* @package WordPress
* @subpackage Upgrader
* @since 3.7.0
*/
class Language_Pack_Upgrader extends WP_Upgrader {
/**
* Result of the language pack upgrade.
*
* @since 3.7.0
* @var array|WP_Error $result
* @see WP_Upgrader::$result
*/
public $result;
/**
* Whether a bulk upgrade/install is being performed.
*
* @since 3.7.0
* @var bool $bulk
*/
public $bulk = true;
/**
* Asynchronously upgrade language packs after other upgrades have been made.
*
* Hooked to the {@see 'upgrader_process_complete'} action by default.
*
* @since 3.7.0
*/
public static function async_upgrade( $upgrader = false ) {
// Avoid recursion.
if ( $upgrader && $upgrader instanceof Language_Pack_Upgrader ) {
return;
}
// Nothing to do?
$language_updates = wp_get_translation_updates();
if ( ! $language_updates ) {
return;
}
// Avoid messing with VCS installs, at least for now.
// Noted: this is not the ideal way to accomplish this.
$check_vcs = new WP_Automatic_Updater;
if ( $check_vcs->is_vcs_checkout( WP_CONTENT_DIR ) ) {
return;
}
foreach ( $language_updates as $key => $language_update ) {
$update = ! empty( $language_update->autoupdate );
/**
* Filter whether to asynchronously update translation for core, a plugin, or a theme.
*
* @since 4.0.0
*
* @param bool $update Whether to update.
* @param object $language_update The update offer.
*/
$update = apply_filters( 'async_update_translation', $update, $language_update );
if ( ! $update ) {
unset( $language_updates[ $key ] );
}
}
if ( empty( $language_updates ) ) {
return;
}
$skin = new Language_Pack_Upgrader_Skin( array(
'skip_header_footer' => true,
) );
$lp_upgrader = new Language_Pack_Upgrader( $skin );
$lp_upgrader->bulk_upgrade( $language_updates );
}
/**
* Initialize the upgrade strings.
*
* @since 3.7.0
*/
public function upgrade_strings() {
$this->strings['starting_upgrade'] = __( 'Some of your translations need updating. Sit tight for a few more seconds while we update them as well.' );
$this->strings['up_to_date'] = __( 'The translation is up to date.' ); // We need to silently skip this case
$this->strings['no_package'] = __( 'Update package not available.' );
$this->strings['downloading_package'] = __( 'Downloading translation from <span class="code">%s</span>&#8230;' );
$this->strings['unpack_package'] = __( 'Unpacking the update&#8230;' );
$this->strings['process_failed'] = __( 'Translation update failed.' );
$this->strings['process_success'] = __( 'Translation updated successfully.' );
}
/**
* Upgrade a language pack.
*
* @since 3.7.0
*
* @param string|false $update Optional. Whether an update offer is available. Default false.
* @param array $args Optional. Other optional arguments, see
* {@see Language_Pack_Upgrader::bulk_upgrade()}. Default empty array.
* @return array|WP_Error The result of the upgrade, or a {@see wP_Error} object instead.
*/
public function upgrade( $update = false, $args = array() ) {
if ( $update ) {
$update = array( $update );
}
$results = $this->bulk_upgrade( $update, $args );
if ( ! is_array( $results ) ) {
return $results;
}
return $results[0];
}
/**
* Bulk upgrade language packs.
*
* @since 3.7.0
*
* @param array $language_updates Optional. Language pack updates. Default empty array.
* @param array $args {
* Optional. Other arguments for upgrading multiple language packs. Default empty array
*
* @type bool $clear_update_cache Whether to clear the update cache when done.
* Default true.
* }
* @return array|true|false|WP_Error Will return an array of results, or true if there are no updates,
* false or WP_Error for initial errors.
*/
public function bulk_upgrade( $language_updates = array(), $args = array() ) {
global $wp_filesystem;
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
if ( ! $language_updates )
$language_updates = wp_get_translation_updates();
if ( empty( $language_updates ) ) {
$this->skin->header();
$this->skin->before();
$this->skin->set_result( true );
$this->skin->feedback( 'up_to_date' );
$this->skin->after();
$this->skin->bulk_footer();
$this->skin->footer();
return true;
}
if ( 'upgrader_process_complete' == current_filter() )
$this->skin->feedback( 'starting_upgrade' );
// Remove any existing upgrade filters from the plugin/theme upgraders #WP29425 & #WP29230
remove_all_filters( 'upgrader_pre_install' );
remove_all_filters( 'upgrader_clear_destination' );
remove_all_filterS( 'upgrader_post_install' );
remove_all_filters( 'upgrader_source_selection' );
add_filter( 'upgrader_source_selection', array( $this, 'check_package' ), 10, 2 );
$this->skin->header();
// Connect to the Filesystem first.
$res = $this->fs_connect( array( WP_CONTENT_DIR, WP_LANG_DIR ) );
if ( ! $res ) {
$this->skin->footer();
return false;
}
$results = array();
$this->update_count = count( $language_updates );
$this->update_current = 0;
/*
* The filesystem's mkdir() is not recursive. Make sure WP_LANG_DIR exists,
* as we then may need to create a /plugins or /themes directory inside of it.
*/
$remote_destination = $wp_filesystem->find_folder( WP_LANG_DIR );
if ( ! $wp_filesystem->exists( $remote_destination ) )
if ( ! $wp_filesystem->mkdir( $remote_destination, FS_CHMOD_DIR ) )
return new WP_Error( 'mkdir_failed_lang_dir', $this->strings['mkdir_failed'], $remote_destination );
foreach ( $language_updates as $language_update ) {
$this->skin->language_update = $language_update;
$destination = WP_LANG_DIR;
if ( 'plugin' == $language_update->type )
$destination .= '/plugins';
elseif ( 'theme' == $language_update->type )
$destination .= '/themes';
$this->update_current++;
$options = array(
'package' => $language_update->package,
'destination' => $destination,
'clear_destination' => false,
'abort_if_destination_exists' => false, // We expect the destination to exist.
'clear_working' => true,
'is_multi' => true,
'hook_extra' => array(
'language_update_type' => $language_update->type,
'language_update' => $language_update,
)
);
$result = $this->run( $options );
$results[] = $this->result;
// Prevent credentials auth screen from displaying multiple times.
if ( false === $result )
break;
}
$this->skin->bulk_footer();
$this->skin->footer();
// Clean up our hooks, in case something else does an upgrade on this connection.
remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
if ( $parsed_args['clear_update_cache'] ) {
wp_clean_update_cache();
}
return $results;
}
/**
* Check the package source to make sure there are .mo and .po files.
*
* Hooked to the {@see 'upgrader_source_selection'} filter by
* {@see Language_Pack_Upgrader::bulk_upgrade()}.
*
* @since 3.7.0
*/
public function check_package( $source, $remote_source ) {
global $wp_filesystem;
if ( is_wp_error( $source ) )
return $source;
// Check that the folder contains a valid language.
$files = $wp_filesystem->dirlist( $remote_source );
// Check to see if a .po and .mo exist in the folder.
$po = $mo = false;
foreach ( (array) $files as $file => $filedata ) {
if ( '.po' == substr( $file, -3 ) )
$po = true;
elseif ( '.mo' == substr( $file, -3 ) )
$mo = true;
}
if ( ! $mo || ! $po )
return new WP_Error( 'incompatible_archive_pomo', $this->strings['incompatible_archive'],
__( 'The language pack is missing either the <code>.po</code> or <code>.mo</code> files.' ) );
return $source;
}
/**
* Get the name of an item being updated.
*
* @since 3.7.0
*
* @param object The data for an update.
* @return string The name of the item being updated.
*/
public function get_name_for_update( $update ) {
switch ( $update->type ) {
case 'core':
return 'WordPress'; // Not translated
case 'theme':
$theme = wp_get_theme( $update->slug );
if ( $theme->exists() )
return $theme->Get( 'Name' );
break;
case 'plugin':
$plugin_data = get_plugins( '/' . $update->slug );
$plugin_data = reset( $plugin_data );
if ( $plugin_data )
return $plugin_data['Name'];
break;
}
return '';
}
}
/**
* Core Upgrader class for WordPress. It allows for WordPress to upgrade itself in combination with the wp-admin/includes/update-core.php file
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
class Core_Upgrader extends WP_Upgrader {
/**
* Initialize the upgrade strings.
*
* @since 2.8.0
*/
public function upgrade_strings() {
$this->strings['up_to_date'] = __('WordPress is at the latest version.');
$this->strings['no_package'] = __('Update package not available.');
$this->strings['downloading_package'] = __('Downloading update from <span class="code">%s</span>&#8230;');
$this->strings['unpack_package'] = __('Unpacking the update&#8230;');
$this->strings['copy_failed'] = __('Could not copy files.');
$this->strings['copy_failed_space'] = __('Could not copy files. You may have run out of disk space.' );
$this->strings['start_rollback'] = __( 'Attempting to roll back to previous version.' );
$this->strings['rollback_was_required'] = __( 'Due to an error during updating, WordPress has rolled back to your previous version.' );
}
/**
* Upgrade WordPress core.
*
* @since 2.8.0
*
* @param object $current Response object for whether WordPress is current.
* @param array $args {
* Optional. Arguments for upgrading WordPress core. Default empty array.
*
* @type bool $pre_check_md5 Whether to check the file checksums before
* attempting the upgrade. Default true.
* @type bool $attempt_rollback Whether to attempt to rollback the chances if
* there is a problem. Default false.
* @type bool $do_rollback Whether to perform this "upgrade" as a rollback.
* Default false.
* }
* @return null|false|WP_Error False or WP_Error on failure, null on success.
*/
public function upgrade( $current, $args = array() ) {
global $wp_filesystem;
include( ABSPATH . WPINC . '/version.php' ); // $wp_version;
$start_time = time();
$defaults = array(
'pre_check_md5' => true,
'attempt_rollback' => false,
'do_rollback' => false,
'allow_relaxed_file_ownership' => false,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
// Is an update available?
if ( !isset( $current->response ) || $current->response == 'latest' )
return new WP_Error('up_to_date', $this->strings['up_to_date']);
$res = $this->fs_connect( array( ABSPATH, WP_CONTENT_DIR ), $parsed_args['allow_relaxed_file_ownership'] );
if ( ! $res || is_wp_error( $res ) ) {
return $res;
}
$wp_dir = trailingslashit($wp_filesystem->abspath());
$partial = true;
if ( $parsed_args['do_rollback'] )
$partial = false;
elseif ( $parsed_args['pre_check_md5'] && ! $this->check_files() )
$partial = false;
/*
* If partial update is returned from the API, use that, unless we're doing
* a reinstall. If we cross the new_bundled version number, then use
* the new_bundled zip. Don't though if the constant is set to skip bundled items.
* If the API returns a no_content zip, go with it. Finally, default to the full zip.
*/
if ( $parsed_args['do_rollback'] && $current->packages->rollback )
$to_download = 'rollback';
elseif ( $current->packages->partial && 'reinstall' != $current->response && $wp_version == $current->partial_version && $partial )
$to_download = 'partial';
elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
&& ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) )
$to_download = 'new_bundled';
elseif ( $current->packages->no_content )
$to_download = 'no_content';
else
$to_download = 'full';
$download = $this->download_package( $current->packages->$to_download );
if ( is_wp_error($download) )
return $download;
$working_dir = $this->unpack_package( $download );
if ( is_wp_error($working_dir) )
return $working_dir;
// Copy update-core.php from the new version into place.
if ( !$wp_filesystem->copy($working_dir . '/wordpress/wp-admin/includes/update-core.php', $wp_dir . 'wp-admin/includes/update-core.php', true) ) {
$wp_filesystem->delete($working_dir, true);
return new WP_Error( 'copy_failed_for_update_core_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'wp-admin/includes/update-core.php' );
}
$wp_filesystem->chmod($wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE);
require_once( ABSPATH . 'wp-admin/includes/update-core.php' );
if ( ! function_exists( 'update_core' ) )
return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
$result = update_core( $working_dir, $wp_dir );
// In the event of an issue, we may be able to roll back.
if ( $parsed_args['attempt_rollback'] && $current->packages->rollback && ! $parsed_args['do_rollback'] ) {
$try_rollback = false;
if ( is_wp_error( $result ) ) {
$error_code = $result->get_error_code();
/*
* Not all errors are equal. These codes are critical: copy_failed__copy_dir,
* mkdir_failed__copy_dir, copy_failed__copy_dir_retry, and disk_full.
* do_rollback allows for update_core() to trigger a rollback if needed.
*/
if ( false !== strpos( $error_code, 'do_rollback' ) )
$try_rollback = true;
elseif ( false !== strpos( $error_code, '__copy_dir' ) )
$try_rollback = true;
elseif ( 'disk_full' === $error_code )
$try_rollback = true;
}
if ( $try_rollback ) {
/** This filter is documented in wp-admin/includes/update-core.php */
apply_filters( 'update_feedback', $result );
/** This filter is documented in wp-admin/includes/update-core.php */
apply_filters( 'update_feedback', $this->strings['start_rollback'] );
$rollback_result = $this->upgrade( $current, array_merge( $parsed_args, array( 'do_rollback' => true ) ) );
$original_result = $result;
$result = new WP_Error( 'rollback_was_required', $this->strings['rollback_was_required'], (object) array( 'update' => $original_result, 'rollback' => $rollback_result ) );
}
}
/** This action is documented in wp-admin/includes/class-wp-upgrader.php */
do_action( 'upgrader_process_complete', $this, array( 'action' => 'update', 'type' => 'core' ) );
// Clear the current updates
delete_site_transient( 'update_core' );
if ( ! $parsed_args['do_rollback'] ) {
$stats = array(
'update_type' => $current->response,
'success' => true,
'fs_method' => $wp_filesystem->method,
'fs_method_forced' => defined( 'FS_METHOD' ) || has_filter( 'filesystem_method' ),
'fs_method_direct' => !empty( $GLOBALS['_wp_filesystem_direct_method'] ) ? $GLOBALS['_wp_filesystem_direct_method'] : '',
'time_taken' => time() - $start_time,
'reported' => $wp_version,
'attempted' => $current->version,
);
if ( is_wp_error( $result ) ) {
$stats['success'] = false;
// Did a rollback occur?
if ( ! empty( $try_rollback ) ) {
$stats['error_code'] = $original_result->get_error_code();
$stats['error_data'] = $original_result->get_error_data();
// Was the rollback successful? If not, collect its error too.
$stats['rollback'] = ! is_wp_error( $rollback_result );
if ( is_wp_error( $rollback_result ) ) {
$stats['rollback_code'] = $rollback_result->get_error_code();
$stats['rollback_data'] = $rollback_result->get_error_data();
}
} else {
$stats['error_code'] = $result->get_error_code();
$stats['error_data'] = $result->get_error_data();
}
}
wp_version_check( $stats );
}
return $result;
}
/**
* Determines if this WordPress Core version should update to an offered version or not.
*
* @since 3.7.0
*
* @param string $offered_ver The offered version, of the format x.y.z.
* @return bool True if we should update to the offered version, otherwise false.
*/
public static function should_update_to_version( $offered_ver ) {
include( ABSPATH . WPINC . '/version.php' ); // $wp_version; // x.y.z
$current_branch = implode( '.', array_slice( preg_split( '/[.-]/', $wp_version ), 0, 2 ) ); // x.y
$new_branch = implode( '.', array_slice( preg_split( '/[.-]/', $offered_ver ), 0, 2 ) ); // x.y
$current_is_development_version = (bool) strpos( $wp_version, '-' );
// Defaults:
$upgrade_dev = true;
$upgrade_minor = true;
$upgrade_major = false;
// WP_AUTO_UPDATE_CORE = true (all), 'minor', false.
if ( defined( 'WP_AUTO_UPDATE_CORE' ) ) {
if ( false === WP_AUTO_UPDATE_CORE ) {
// Defaults to turned off, unless a filter allows it
$upgrade_dev = $upgrade_minor = $upgrade_major = false;
} elseif ( true === WP_AUTO_UPDATE_CORE ) {
// ALL updates for core
$upgrade_dev = $upgrade_minor = $upgrade_major = true;
} elseif ( 'minor' === WP_AUTO_UPDATE_CORE ) {
// Only minor updates for core
$upgrade_dev = $upgrade_major = false;
$upgrade_minor = true;
}
}
// 1: If we're already on that version, not much point in updating?
if ( $offered_ver == $wp_version )
return false;
// 2: If we're running a newer version, that's a nope
if ( version_compare( $wp_version, $offered_ver, '>' ) )
return false;
$failure_data = get_site_option( 'auto_core_update_failed' );
if ( $failure_data ) {
// If this was a critical update failure, cannot update.
if ( ! empty( $failure_data['critical'] ) )
return false;
// Don't claim we can update on update-core.php if we have a non-critical failure logged.
if ( $wp_version == $failure_data['current'] && false !== strpos( $offered_ver, '.1.next.minor' ) )
return false;
// Cannot update if we're retrying the same A to B update that caused a non-critical failure.
// Some non-critical failures do allow retries, like download_failed.
// 3.7.1 => 3.7.2 resulted in files_not_writable, if we are still on 3.7.1 and still trying to update to 3.7.2.
if ( empty( $failure_data['retry'] ) && $wp_version == $failure_data['current'] && $offered_ver == $failure_data['attempted'] )
return false;
}
// 3: 3.7-alpha-25000 -> 3.7-alpha-25678 -> 3.7-beta1 -> 3.7-beta2
if ( $current_is_development_version ) {
/**
* Filter whether to enable automatic core updates for development versions.
*
* @since 3.7.0
*
* @param bool $upgrade_dev Whether to enable automatic updates for
* development versions.
*/
if ( ! apply_filters( 'allow_dev_auto_core_updates', $upgrade_dev ) )
return false;
// Else fall through to minor + major branches below.
}
// 4: Minor In-branch updates (3.7.0 -> 3.7.1 -> 3.7.2 -> 3.7.4)
if ( $current_branch == $new_branch ) {
/**
* Filter whether to enable minor automatic core updates.
*
* @since 3.7.0
*
* @param bool $upgrade_minor Whether to enable minor automatic core updates.
*/
return apply_filters( 'allow_minor_auto_core_updates', $upgrade_minor );
}
// 5: Major version updates (3.7.0 -> 3.8.0 -> 3.9.1)
if ( version_compare( $new_branch, $current_branch, '>' ) ) {
/**
* Filter whether to enable major automatic core updates.
*
* @since 3.7.0
*
* @param bool $upgrade_major Whether to enable major automatic core updates.
*/
return apply_filters( 'allow_major_auto_core_updates', $upgrade_major );
}
// If we're not sure, we don't want it
return false;
}
/**
* Compare the disk file checksums agains the expected checksums.
*
* @since 3.7.0
*
* @return bool True if the checksums match, otherwise false.
*/
public function check_files() {
global $wp_version, $wp_local_package;
$checksums = get_core_checksums( $wp_version, isset( $wp_local_package ) ? $wp_local_package : 'en_US' );
if ( ! is_array( $checksums ) )
return false;
foreach ( $checksums as $file => $checksum ) {
// Skip files which get updated
if ( 'wp-content' == substr( $file, 0, 10 ) )
continue;
if ( ! file_exists( ABSPATH . $file ) || md5_file( ABSPATH . $file ) !== $checksum )
return false;
}
return true;
}
}
/**
* Upgrade Skin helper for File uploads. This class handles the upload process and passes it as if it's a local file to the Upgrade/Installer functions.
*
* @package WordPress
* @subpackage Upgrader
* @since 2.8.0
*/
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 install.
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 = $_GET[$urlholder];
$this->package = $uploads['basedir'] . '/' . $this->filename;
}
}
/**
* 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;
}
}
/**
* The WordPress automatic background updater.
*
* @package WordPress
* @subpackage Upgrader
* @since 3.7.0
*/
class WP_Automatic_Updater {
/**
* Tracks update results during processing.
*
* @var array
*/
protected $update_results = array();
/**
* Whether the entire automatic updater is disabled.
*
* @since 3.7.0
*/
public function is_disabled() {
// Background updates are disabled if you don't want file changes.
if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS )
return true;
if ( defined( 'WP_INSTALLING' ) )
return true;
// More fine grained control can be done through the WP_AUTO_UPDATE_CORE constant and filters.
$disabled = defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED;
/**
* Filter whether to entirely disable background updates.
*
* There are more fine-grained filters and controls for selective disabling.
* This filter parallels the AUTOMATIC_UPDATER_DISABLED constant in name.
*
* This also disables update notification emails. That may change in the future.
*
* @since 3.7.0
*
* @param bool $disabled Whether the updater should be disabled.
*/
return apply_filters( 'automatic_updater_disabled', $disabled );
}
/**
* Check for version control checkouts.
*
* Checks for Subversion, Git, Mercurial, and Bazaar. It recursively looks up the
* filesystem to the top of the drive, erring on the side of detecting a VCS
* checkout somewhere.
*
* ABSPATH is always checked in addition to whatever $context is (which may be the
* wp-content directory, for example). The underlying assumption is that if you are
* using version control *anywhere*, then you should be making decisions for
* how things get updated.
*
* @since 3.7.0
*
* @param string $context The filesystem path to check, in addition to ABSPATH.
*/
public function is_vcs_checkout( $context ) {
$context_dirs = array( untrailingslashit( $context ) );
if ( $context !== ABSPATH )
$context_dirs[] = untrailingslashit( ABSPATH );
$vcs_dirs = array( '.svn', '.git', '.hg', '.bzr' );
$check_dirs = array();
foreach ( $context_dirs as $context_dir ) {
// Walk up from $context_dir to the root.
do {
$check_dirs[] = $context_dir;
// Once we've hit '/' or 'C:\', we need to stop. dirname will keep returning the input here.
if ( $context_dir == dirname( $context_dir ) )
break;
// Continue one level at a time.
} while ( $context_dir = dirname( $context_dir ) );
}
$check_dirs = array_unique( $check_dirs );
// Search all directories we've found for evidence of version control.
foreach ( $vcs_dirs as $vcs_dir ) {
foreach ( $check_dirs as $check_dir ) {
if ( $checkout = @is_dir( rtrim( $check_dir, '\\/' ) . "/$vcs_dir" ) )
break 2;
}
}
/**
* Filter whether the automatic updater should consider a filesystem
* location to be potentially managed by a version control system.
*
* @since 3.7.0
*
* @param bool $checkout Whether a VCS checkout was discovered at $context
* or ABSPATH, or anywhere higher.
* @param string $context The filesystem context (a path) against which
* filesystem status should be checked.
*/
return apply_filters( 'automatic_updates_is_vcs_checkout', $checkout, $context );
}
/**
* Tests to see if we can and should update a specific item.
*
* @since 3.7.0
*
* @param string $type The type of update being checked: 'core', 'theme',
* 'plugin', 'translation'.
* @param object $item The update offer.
* @param string $context The filesystem context (a path) against which filesystem
* access and status should be checked.
*/
public function should_update( $type, $item, $context ) {
// Used to see if WP_Filesystem is set up to allow unattended updates.
$skin = new Automatic_Upgrader_Skin;
if ( $this->is_disabled() )
return false;
// Only relax the filesystem checks when the update doesn't include new files
$allow_relaxed_file_ownership = false;
if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
$allow_relaxed_file_ownership = true;
}
// If we can't do an auto core update, we may still be able to email the user.
if ( ! $skin->request_filesystem_credentials( false, $context, $allow_relaxed_file_ownership ) || $this->is_vcs_checkout( $context ) ) {
if ( 'core' == $type )
$this->send_core_update_notification_email( $item );
return false;
}
// Next up, is this an item we can update?
if ( 'core' == $type )
$update = Core_Upgrader::should_update_to_version( $item->current );
else
$update = ! empty( $item->autoupdate );
/**
* Filter whether to automatically update core, a plugin, a theme, or a language.
*
* The dynamic portion of the hook name, `$type`, refers to the type of update
* being checked. Can be 'core', 'theme', 'plugin', or 'translation'.
*
* Generally speaking, plugins, themes, and major core versions are not updated
* by default, while translations and minor and development versions for core
* are updated by default.
*
* See the {@see 'allow_dev_auto_core_updates', {@see 'allow_minor_auto_core_updates'},
* and {@see 'allow_major_auto_core_updates'} filters for a more straightforward way to
* adjust core updates.
*
* @since 3.7.0
*
* @param bool $update Whether to update.
* @param object $item The update offer.
*/
$update = apply_filters( 'auto_update_' . $type, $update, $item );
if ( ! $update ) {
if ( 'core' == $type )
$this->send_core_update_notification_email( $item );
return false;
}
// If it's a core update, are we actually compatible with its requirements?
if ( 'core' == $type ) {
global $wpdb;
$php_compat = version_compare( phpversion(), $item->php_version, '>=' );
if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
$mysql_compat = true;
else
$mysql_compat = version_compare( $wpdb->db_version(), $item->mysql_version, '>=' );
if ( ! $php_compat || ! $mysql_compat )
return false;
}
return true;
}
/**
* Notifies an administrator of a core update.
*
* @since 3.7.0
*
* @param object $item The update offer.
*/
protected function send_core_update_notification_email( $item ) {
$notified = get_site_option( 'auto_core_update_notified' );
// Don't notify if we've already notified the same email address of the same version.
if ( $notified && $notified['email'] == get_site_option( 'admin_email' ) && $notified['version'] == $item->current )
return false;
// See if we need to notify users of a core update.
$notify = ! empty( $item->notify_email );
/**
* Filter whether to notify the site administrator of a new core update.
*
* By default, administrators are notified when the update offer received
* from WordPress.org sets a particular flag. This allows some discretion
* in if and when to notify.
*
* This filter is only evaluated once per release. If the same email address
* was already notified of the same new version, WordPress won't repeatedly
* email the administrator.
*
* This filter is also used on about.php to check if a plugin has disabled
* these notifications.
*
* @since 3.7.0
*
* @param bool $notify Whether the site administrator is notified.
* @param object $item The update offer.
*/
if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) )
return false;
$this->send_email( 'manual', $item );
return true;
}
/**
* Update an item, if appropriate.
*
* @since 3.7.0
*
* @param string $type The type of update being checked: 'core', 'theme', 'plugin', 'translation'.
* @param object $item The update offer.
*/
public function update( $type, $item ) {
$skin = new Automatic_Upgrader_Skin;
switch ( $type ) {
case 'core':
// The Core upgrader doesn't use the Upgrader's skin during the actual main part of the upgrade, instead, firing a filter.
add_filter( 'update_feedback', array( $skin, 'feedback' ) );
$upgrader = new Core_Upgrader( $skin );
$context = ABSPATH;
break;
case 'plugin':
$upgrader = new Plugin_Upgrader( $skin );
$context = WP_PLUGIN_DIR; // We don't support custom Plugin directories, or updates for WPMU_PLUGIN_DIR
break;
case 'theme':
$upgrader = new Theme_Upgrader( $skin );
$context = get_theme_root( $item->theme );
break;
case 'translation':
$upgrader = new Language_Pack_Upgrader( $skin );
$context = WP_CONTENT_DIR; // WP_LANG_DIR;
break;
}
// Determine whether we can and should perform this update.
if ( ! $this->should_update( $type, $item, $context ) )
return false;
$upgrader_item = $item;
switch ( $type ) {
case 'core':
$skin->feedback( __( 'Updating to WordPress %s' ), $item->version );
$item_name = sprintf( __( 'WordPress %s' ), $item->version );
break;
case 'theme':
$upgrader_item = $item->theme;
$theme = wp_get_theme( $upgrader_item );
$item_name = $theme->Get( 'Name' );
$skin->feedback( __( 'Updating theme: %s' ), $item_name );
break;
case 'plugin':
$upgrader_item = $item->plugin;
$plugin_data = get_plugin_data( $context . '/' . $upgrader_item );
$item_name = $plugin_data['Name'];
$skin->feedback( __( 'Updating plugin: %s' ), $item_name );
break;
case 'translation':
$language_item_name = $upgrader->get_name_for_update( $item );
$item_name = sprintf( __( 'Translations for %s' ), $language_item_name );
$skin->feedback( sprintf( __( 'Updating translations for %1$s (%2$s)&#8230;' ), $language_item_name, $item->language ) );
break;
}
$allow_relaxed_file_ownership = false;
if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
$allow_relaxed_file_ownership = true;
}
// Boom, This sites about to get a whole new splash of paint!
$upgrade_result = $upgrader->upgrade( $upgrader_item, array(
'clear_update_cache' => false,
// Always use partial builds if possible for core updates.
'pre_check_md5' => false,
// Only available for core updates.
'attempt_rollback' => true,
// Allow relaxed file ownership in some scenarios
'allow_relaxed_file_ownership' => $allow_relaxed_file_ownership,
) );
// If the filesystem is unavailable, false is returned.
if ( false === $upgrade_result ) {
$upgrade_result = new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) );
}
// Core doesn't output this, so let's append it so we don't get confused.
if ( 'core' == $type ) {
if ( is_wp_error( $upgrade_result ) ) {
$skin->error( __( 'Installation Failed' ), $upgrade_result );
} else {
$skin->feedback( __( 'WordPress updated successfully' ) );
}
}
$this->update_results[ $type ][] = (object) array(
'item' => $item,
'result' => $upgrade_result,
'name' => $item_name,
'messages' => $skin->get_upgrade_messages()
);
return $upgrade_result;
}
/**
* Kicks off the background update process, looping through all pending updates.
*
* @since 3.7.0
*/
public function run() {
global $wpdb, $wp_version;
if ( $this->is_disabled() )
return;
if ( ! is_main_network() || ! is_main_site() )
return;
$lock_name = 'auto_updater.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_name, time() ) );
if ( ! $lock_result ) {
$lock_result = get_option( $lock_name );
// If we couldn't create a lock, and there isn't a lock, bail
if ( ! $lock_result )
return;
// Check to see if the lock is still valid
if ( $lock_result > ( time() - HOUR_IN_SECONDS ) )
return;
}
// Update the lock, as by this point we've definitely got a lock, just need to fire the actions
update_option( $lock_name, time() );
// Don't automatically run these thins, as we'll handle it ourselves
remove_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
remove_action( 'upgrader_process_complete', 'wp_version_check' );
remove_action( 'upgrader_process_complete', 'wp_update_plugins' );
remove_action( 'upgrader_process_complete', 'wp_update_themes' );
// Next, Plugins
wp_update_plugins(); // Check for Plugin updates
$plugin_updates = get_site_transient( 'update_plugins' );
if ( $plugin_updates && !empty( $plugin_updates->response ) ) {
foreach ( $plugin_updates->response as $plugin ) {
$this->update( 'plugin', $plugin );
}
// Force refresh of plugin update information
wp_clean_plugins_cache();
}
// Next, those themes we all love
wp_update_themes(); // Check for Theme updates
$theme_updates = get_site_transient( 'update_themes' );
if ( $theme_updates && !empty( $theme_updates->response ) ) {
foreach ( $theme_updates->response as $theme ) {
$this->update( 'theme', (object) $theme );
}
// Force refresh of theme update information
wp_clean_themes_cache();
}
// Next, Process any core update
wp_version_check(); // Check for Core updates
$core_update = find_core_auto_update();
if ( $core_update )
$this->update( 'core', $core_update );
// Clean up, and check for any pending translations
// (Core_Upgrader checks for core updates)
$theme_stats = array();
if ( isset( $this->update_results['theme'] ) ) {
foreach ( $this->update_results['theme'] as $upgrade ) {
$theme_stats[ $upgrade->item->theme ] = ( true === $upgrade->result );
}
}
wp_update_themes( $theme_stats ); // Check for Theme updates
$plugin_stats = array();
if ( isset( $this->update_results['plugin'] ) ) {
foreach ( $this->update_results['plugin'] as $upgrade ) {
$plugin_stats[ $upgrade->item->plugin ] = ( true === $upgrade->result );
}
}
wp_update_plugins( $plugin_stats ); // Check for Plugin updates
// Finally, Process any new translations
$language_updates = wp_get_translation_updates();
if ( $language_updates ) {
foreach ( $language_updates as $update ) {
$this->update( 'translation', $update );
}
// Clear existing caches
wp_clean_update_cache();
wp_version_check(); // check for Core updates
wp_update_themes(); // Check for Theme updates
wp_update_plugins(); // Check for Plugin updates
}
// Send debugging email to all development installs.
if ( ! empty( $this->update_results ) ) {
$development_version = false !== strpos( $wp_version, '-' );
/**
* Filter whether to send a debugging email for each automatic background update.
*
* @since 3.7.0
*
* @param bool $development_version By default, emails are sent if the
* install is a development version.
* Return false to avoid the email.
*/
if ( apply_filters( 'automatic_updates_send_debug_email', $development_version ) )
$this->send_debug_email();
if ( ! empty( $this->update_results['core'] ) )
$this->after_core_update( $this->update_results['core'][0] );
/**
* Fires after all automatic updates have run.
*
* @since 3.8.0
*
* @param array $update_results The results of all attempted updates.
*/
do_action( 'automatic_updates_complete', $this->update_results );
}
// Clear the lock
delete_option( $lock_name );
}
/**
* If we tried to perform a core update, check if we should send an email,
* and if we need to avoid processing future updates.
*
* @param object $update_result The result of the core update. Includes the update offer and result.
*/
protected function after_core_update( $update_result ) {
global $wp_version;
$core_update = $update_result->item;
$result = $update_result->result;
if ( ! is_wp_error( $result ) ) {
$this->send_email( 'success', $core_update );
return;
}
$error_code = $result->get_error_code();
// Any of these WP_Error codes are critical failures, as in they occurred after we started to copy core files.
// We should not try to perform a background update again until there is a successful one-click update performed by the user.
$critical = false;
if ( $error_code === 'disk_full' || false !== strpos( $error_code, '__copy_dir' ) ) {
$critical = true;
} elseif ( $error_code === 'rollback_was_required' && is_wp_error( $result->get_error_data()->rollback ) ) {
// A rollback is only critical if it failed too.
$critical = true;
$rollback_result = $result->get_error_data()->rollback;
} elseif ( false !== strpos( $error_code, 'do_rollback' ) ) {
$critical = true;
}
if ( $critical ) {
$critical_data = array(
'attempted' => $core_update->current,
'current' => $wp_version,
'error_code' => $error_code,
'error_data' => $result->get_error_data(),
'timestamp' => time(),
'critical' => true,
);
if ( isset( $rollback_result ) ) {
$critical_data['rollback_code'] = $rollback_result->get_error_code();
$critical_data['rollback_data'] = $rollback_result->get_error_data();
}
update_site_option( 'auto_core_update_failed', $critical_data );
$this->send_email( 'critical', $core_update, $result );
return;
}
/*
* Any other WP_Error code (like download_failed or files_not_writable) occurs before
* we tried to copy over core files. Thus, the failures are early and graceful.
*
* We should avoid trying to perform a background update again for the same version.
* But we can try again if another version is released.
*
* For certain 'transient' failures, like download_failed, we should allow retries.
* In fact, let's schedule a special update for an hour from now. (It's possible
* the issue could actually be on WordPress.org's side.) If that one fails, then email.
*/
$send = true;
$transient_failures = array( 'incompatible_archive', 'download_failed', 'insane_distro' );
if ( in_array( $error_code, $transient_failures ) && ! get_site_option( 'auto_core_update_failed' ) ) {
wp_schedule_single_event( time() + HOUR_IN_SECONDS, 'wp_maybe_auto_update' );
$send = false;
}
$n = get_site_option( 'auto_core_update_notified' );
// Don't notify if we've already notified the same email address of the same version of the same notification type.
if ( $n && 'fail' == $n['type'] && $n['email'] == get_site_option( 'admin_email' ) && $n['version'] == $core_update->current )
$send = false;
update_site_option( 'auto_core_update_failed', array(
'attempted' => $core_update->current,
'current' => $wp_version,
'error_code' => $error_code,
'error_data' => $result->get_error_data(),
'timestamp' => time(),
'retry' => in_array( $error_code, $transient_failures ),
) );
if ( $send )
$this->send_email( 'fail', $core_update, $result );
}
/**
* Sends an email upon the completion or failure of a background core update.
*
* @since 3.7.0
*
* @param string $type The type of email to send. Can be one of 'success', 'fail', 'manual', 'critical'.
* @param object $core_update The update offer that was attempted.
* @param mixed $result Optional. The result for the core update. Can be WP_Error.
*/
protected function send_email( $type, $core_update, $result = null ) {
update_site_option( 'auto_core_update_notified', array(
'type' => $type,
'email' => get_site_option( 'admin_email' ),
'version' => $core_update->current,
'timestamp' => time(),
) );
$next_user_core_update = get_preferred_from_update_core();
// If the update transient is empty, use the update we just performed
if ( ! $next_user_core_update )
$next_user_core_update = $core_update;
$newer_version_available = ( 'upgrade' == $next_user_core_update->response && version_compare( $next_user_core_update->version, $core_update->version, '>' ) );
/**
* Filter whether to send an email following an automatic background core update.
*
* @since 3.7.0
*
* @param bool $send Whether to send the email. Default true.
* @param string $type The type of email to send. Can be one of
* 'success', 'fail', 'critical'.
* @param object $core_update The update offer that was attempted.
* @param mixed $result The result for the core update. Can be WP_Error.
*/
if ( 'manual' !== $type && ! apply_filters( 'auto_core_update_send_email', true, $type, $core_update, $result ) )
return;
switch ( $type ) {
case 'success' : // We updated.
/* translators: 1: Site name, 2: WordPress version number. */
$subject = __( '[%1$s] Your site has updated to WordPress %2$s' );
break;
case 'fail' : // We tried to update but couldn't.
case 'manual' : // We can't update (and made no attempt).
/* translators: 1: Site name, 2: WordPress version number. */
$subject = __( '[%1$s] WordPress %2$s is available. Please update!' );
break;
case 'critical' : // We tried to update, started to copy files, then things went wrong.
/* translators: 1: Site name. */
$subject = __( '[%1$s] URGENT: Your site may be down due to a failed update' );
break;
default :
return;
}
// If the auto update is not to the latest version, say that the current version of WP is available instead.
$version = 'success' === $type ? $core_update->current : $next_user_core_update->current;
$subject = sprintf( $subject, wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $version );
$body = '';
switch ( $type ) {
case 'success' :
$body .= sprintf( __( 'Howdy! Your site at %1$s has been updated automatically to WordPress %2$s.' ), home_url(), $core_update->current );
$body .= "\n\n";
if ( ! $newer_version_available )
$body .= __( 'No further action is needed on your part.' ) . ' ';
// Can only reference the About screen if their update was successful.
list( $about_version ) = explode( '-', $core_update->current, 2 );
$body .= sprintf( __( "For more on version %s, see the About WordPress screen:" ), $about_version );
$body .= "\n" . admin_url( 'about.php' );
if ( $newer_version_available ) {
$body .= "\n\n" . sprintf( __( 'WordPress %s is also now available.' ), $next_user_core_update->current ) . ' ';
$body .= __( 'Updating is easy and only takes a few moments:' );
$body .= "\n" . network_admin_url( 'update-core.php' );
}
break;
case 'fail' :
case 'manual' :
$body .= sprintf( __( 'Please update your site at %1$s to WordPress %2$s.' ), home_url(), $next_user_core_update->current );
$body .= "\n\n";
// Don't show this message if there is a newer version available.
// Potential for confusion, and also not useful for them to know at this point.
if ( 'fail' == $type && ! $newer_version_available )
$body .= __( 'We tried but were unable to update your site automatically.' ) . ' ';
$body .= __( 'Updating is easy and only takes a few moments:' );
$body .= "\n" . network_admin_url( 'update-core.php' );
break;
case 'critical' :
if ( $newer_version_available )
$body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update WordPress to version %2$s.' ), home_url(), $core_update->current );
else
$body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update to the latest version of WordPress, %2$s.' ), home_url(), $core_update->current );
$body .= "\n\n" . __( "This means your site may be offline or broken. Don't panic; this can be fixed." );
$body .= "\n\n" . __( "Please check out your site now. It's possible that everything is working. If it says you need to update, you should do so:" );
$body .= "\n" . network_admin_url( 'update-core.php' );
break;
}
$critical_support = 'critical' === $type && ! empty( $core_update->support_email );
if ( $critical_support ) {
// Support offer if available.
$body .= "\n\n" . sprintf( __( "The WordPress team is willing to help you. Forward this email to %s and the team will work with you to make sure your site is working." ), $core_update->support_email );
} else {
// Add a note about the support forums.
$body .= "\n\n" . __( 'If you experience any issues or need support, the volunteers in the WordPress.org support forums may be able to help.' );
$body .= "\n" . __( 'https://wordpress.org/support/' );
}
// Updates are important!
if ( $type != 'success' || $newer_version_available ) {
$body .= "\n\n" . __( 'Keeping your site updated is important for security. It also makes the internet a safer place for you and your readers.' );
}
if ( $critical_support ) {
$body .= " " . __( "If you reach out to us, we'll also ensure you'll never have this problem again." );
}
// If things are successful and we're now on the latest, mention plugins and themes if any are out of date.
if ( $type == 'success' && ! $newer_version_available && ( get_plugin_updates() || get_theme_updates() ) ) {
$body .= "\n\n" . __( 'You also have some plugins or themes with updates available. Update them now:' );
$body .= "\n" . network_admin_url();
}
$body .= "\n\n" . __( 'The WordPress Team' ) . "\n";
if ( 'critical' == $type && is_wp_error( $result ) ) {
$body .= "\n***\n\n";
$body .= sprintf( __( 'Your site was running version %s.' ), $GLOBALS['wp_version'] );
$body .= ' ' . __( 'We have some data that describes the error your site encountered.' );
$body .= ' ' . __( 'Your hosting company, support forum volunteers, or a friendly developer may be able to use this information to help you:' );
// If we had a rollback and we're still critical, then the rollback failed too.
// Loop through all errors (the main WP_Error, the update result, the rollback result) for code, data, etc.
if ( 'rollback_was_required' == $result->get_error_code() )
$errors = array( $result, $result->get_error_data()->update, $result->get_error_data()->rollback );
else
$errors = array( $result );
foreach ( $errors as $error ) {
if ( ! is_wp_error( $error ) )
continue;
$error_code = $error->get_error_code();
$body .= "\n\n" . sprintf( __( "Error code: %s" ), $error_code );
if ( 'rollback_was_required' == $error_code )
continue;
if ( $error->get_error_message() )
$body .= "\n" . $error->get_error_message();
$error_data = $error->get_error_data();
if ( $error_data )
$body .= "\n" . implode( ', ', (array) $error_data );
}
$body .= "\n";
}
$to = get_site_option( 'admin_email' );
$headers = '';
$email = compact( 'to', 'subject', 'body', 'headers' );
/**
* Filter the email sent following an automatic background core update.
*
* @since 3.7.0
*
* @param array $email {
* Array of email arguments that will be passed to wp_mail().
*
* @type string $to The email recipient. An array of emails
* can be returned, as handled by wp_mail().
* @type string $subject The email's subject.
* @type string $body The email message body.
* @type string $headers Any email headers, defaults to no headers.
* }
* @param string $type The type of email being sent. Can be one of
* 'success', 'fail', 'manual', 'critical'.
* @param object $core_update The update offer that was attempted.
* @param mixed $result The result for the core update. Can be WP_Error.
*/
$email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result );
wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
}
/**
* Prepares and sends an email of a full log of background update results, useful for debugging and geekery.
*
* @since 3.7.0
*/
protected function send_debug_email() {
$update_count = 0;