--- /dev/null
+<?php
+/**
+ * Upgrade API: Theme_Upgrader class
+ *
+ * @package WordPress
+ * @subpackage Upgrader
+ * @since 4.6.0
+ */
+
+/**
+ * Core class used for upgrading/installing themes.
+ *
+ * It is designed to upgrade/install themes from a local zip, remote zip URL,
+ * or uploaded zip file.
+ *
+ * @since 2.8.0
+ * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
+ *
+ * @see WP_Upgrader
+ */
+class Theme_Upgrader extends WP_Upgrader {
+
+ /**
+ * Result of the theme upgrade offer.
+ *
+ * @since 2.8.0
+ * @access public
+ * @var array|WP_Error $result
+ * @see WP_Upgrader::$result
+ */
+ public $result;
+
+ /**
+ * Whether multiple themes are being upgraded/installed in bulk.
+ *
+ * @since 2.9.0
+ * @access public
+ * @var bool $bulk
+ */
+ public $bulk = false;
+
+ /**
+ * Initialize the upgrade strings.
+ *
+ * @since 2.8.0
+ * @access public
+ */
+ 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>…');
+ $this->strings['unpack_package'] = __('Unpacking the update…');
+ $this->strings['remove_old'] = __('Removing the old version of the theme…');
+ $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
+ * @access public
+ */
+ 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>…');
+ $this->strings['unpack_package'] = __('Unpacking the package…');
+ $this->strings['installing_package'] = __('Installing the theme…');
+ $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…');
+ /* translators: 1: theme name, 2: version */
+ $this->strings['parent_theme_prepare_install'] = __('Preparing to install <strong>%1$s %2$s</strong>…');
+ /* 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 Theme_Upgrader::install().
+ *
+ * @since 3.4.0
+ * @access public
+ *
+ * @param bool $install_result
+ * @param array $hook_extra
+ * @param array $child_result
+ * @return type
+ */
+ 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
+ * Theme_Upgrader::check_parent_theme_filter() when installing
+ * a child theme and installing the parent theme fails.
+ *
+ * @since 3.4.0
+ * @access public
+ *
+ * @param array $actions Preview actions.
+ * @return array
+ */
+ 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.
+ * @access public
+ *
+ * @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 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);
+ // Clear cache so wp_update_themes() knows about the new theme.
+ add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
+
+ $this->run( array(
+ 'package' => $package,
+ 'destination' => get_theme_root(),
+ 'clear_destination' => false, //Do not overwrite files.
+ 'clear_working' => true,
+ 'hook_extra' => array(
+ 'type' => 'theme',
+ 'action' => 'install',
+ ),
+ ) );
+
+ remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
+ remove_filter('upgrader_source_selection', array($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.
+ * @access public
+ *
+ * @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 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);
+ // Clear cache so wp_update_themes() knows about the new theme.
+ add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
+
+ $this->run( array(
+ 'package' => $r['package'],
+ 'destination' => get_theme_root( $theme ),
+ 'clear_destination' => true,
+ 'clear_working' => true,
+ 'hook_extra' => array(
+ 'theme' => $theme,
+ 'type' => 'theme',
+ 'action' => 'update',
+ ),
+ ) );
+
+ remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
+ remove_filter('upgrader_pre_install', array($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.
+ * @access public
+ *
+ * @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);
+ // Clear cache so wp_update_themes() knows about the new theme.
+ add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
+
+ $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();
+
+ $this->skin->footer();
+
+ // Cleanup our hooks, in case something else does a upgrade on this connection.
+ remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
+ remove_filter('upgrader_pre_install', array($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 Theme_Upgrader::install().
+ * It will return an error if the theme doesn't have style.css or index.php
+ * files.
+ *
+ * @since 3.3.0
+ * @access public
+ *
+ * @global WP_Filesystem_Base $wp_filesystem Subclass
+ *
+ * @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'],
+ /* translators: %s: style.css */
+ sprintf( __( 'The theme is missing the %s stylesheet.' ),
+ '<code>style.css</code>'
+ )
+ );
+ }
+
+ $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'],
+ /* translators: %s: style.css */
+ sprintf( __( 'The %s stylesheet doesn’t contain a valid theme header.' ),
+ '<code>style.css</code>'
+ )
+ );
+ }
+
+ // 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'],
+ /* translators: %s: index.php */
+ sprintf( __( 'The theme is missing the %s file.' ),
+ '<code>index.php</code>'
+ )
+ );
+ }
+
+ return $source;
+ }
+
+ /**
+ * Turn on maintenance mode before attempting to upgrade the current theme.
+ *
+ * Hooked to the {@see 'upgrader_pre_install'} filter by Theme_Upgrader::upgrade() and
+ * Theme_Upgrader::bulk_upgrade().
+ *
+ * @since 2.8.0
+ * @access public
+ *
+ * @param bool|WP_Error $return
+ * @param array $theme
+ * @return bool|WP_Error
+ */
+ public function current_before($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 Theme_Upgrader::upgrade()
+ * and Theme_Upgrader::bulk_upgrade().
+ *
+ * @since 2.8.0
+ * @access public
+ *
+ * @param bool|WP_Error $return
+ * @param array $theme
+ * @return bool|WP_Error
+ */
+ public function current_after($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 Theme_Upgrader::upgrade()
+ * and Theme_Upgrader::bulk_upgrade().
+ *
+ * @since 2.8.0
+ * @access public
+ *
+ * @global WP_Filesystem_Base $wp_filesystem Subclass
+ *
+ * @param bool $removed
+ * @param string $local_destination
+ * @param string $remote_destination
+ * @param array $theme
+ * @return bool
+ */
+ 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.
+ * @access public
+ *
+ * @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 );
+ }
+
+}
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff