<?php /** * WordPress core upgrade functionality. * * @package WordPress * @subpackage Administration * @since 2.7.0 */ /** * Stores files to be deleted. * * @since 2.7.0 * @global array $_old_files * @var array * @name $_old_files */ global $_old_files; $_old_files = array( 'wp-admin/bookmarklet.php', 'wp-admin/css/upload.css', 'wp-admin/css/upload-rtl.css', 'wp-admin/css/press-this-ie.css', 'wp-admin/css/press-this-ie-rtl.css', 'wp-admin/edit-form.php', 'wp-admin/link-import.php', 'wp-admin/images/box-bg-left.gif', 'wp-admin/images/box-bg-right.gif', 'wp-admin/images/box-bg.gif', 'wp-admin/images/box-butt-left.gif', 'wp-admin/images/box-butt-right.gif', 'wp-admin/images/box-butt.gif', 'wp-admin/images/box-head-left.gif', 'wp-admin/images/box-head-right.gif', 'wp-admin/images/box-head.gif', 'wp-admin/images/heading-bg.gif', 'wp-admin/images/login-bkg-bottom.gif', 'wp-admin/images/login-bkg-tile.gif', 'wp-admin/images/notice.gif', 'wp-admin/images/toggle.gif', 'wp-admin/images/comment-stalk-classic.gif', 'wp-admin/images/comment-stalk-fresh.gif', 'wp-admin/images/comment-stalk-rtl.gif', 'wp-admin/images/comment-pill.gif', 'wp-admin/images/del.png', 'wp-admin/images/media-button-gallery.gif', 'wp-admin/images/media-buttons.gif', 'wp-admin/images/tail.gif', 'wp-admin/images/gear.png', 'wp-admin/images/tab.png', 'wp-admin/images/postbox-bg.gif', 'wp-admin/includes/upload.php', 'wp-admin/js/dbx-admin-key.js', 'wp-admin/js/link-cat.js', 'wp-admin/js/forms.js', 'wp-admin/js/upload.js', 'wp-admin/js/set-post-thumbnail-handler.js', 'wp-admin/js/set-post-thumbnail-handler.dev.js', 'wp-admin/js/page.js', 'wp-admin/js/page.dev.js', 'wp-admin/js/slug.js', 'wp-admin/js/slug.dev.js', 'wp-admin/profile-update.php', 'wp-admin/templates.php', 'wp-includes/images/audio.png', 'wp-includes/images/css.png', 'wp-includes/images/default.png', 'wp-includes/images/doc.png', 'wp-includes/images/exe.png', 'wp-includes/images/html.png', 'wp-includes/images/js.png', 'wp-includes/images/pdf.png', 'wp-includes/images/swf.png', 'wp-includes/images/tar.png', 'wp-includes/images/text.png', 'wp-includes/images/video.png', 'wp-includes/images/zip.png', 'wp-includes/js/dbx.js', 'wp-includes/js/fat.js', 'wp-includes/js/list-manipulation.js', 'wp-includes/js/jquery/jquery.dimensions.min.js', 'wp-includes/js/tinymce/langs/en.js', 'wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js', 'wp-includes/js/tinymce/plugins/autosave/langs', 'wp-includes/js/tinymce/plugins/directionality/images', 'wp-includes/js/tinymce/plugins/directionality/langs', 'wp-includes/js/tinymce/plugins/inlinepopups/css', 'wp-includes/js/tinymce/plugins/inlinepopups/images', 'wp-includes/js/tinymce/plugins/inlinepopups/jscripts', 'wp-includes/js/tinymce/plugins/paste/images', 'wp-includes/js/tinymce/plugins/paste/jscripts', 'wp-includes/js/tinymce/plugins/paste/langs', 'wp-includes/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php', 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php', 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php', 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php', 'wp-includes/js/tinymce/plugins/spellchecker/css/spellchecker.css', 'wp-includes/js/tinymce/plugins/spellchecker/images', 'wp-includes/js/tinymce/plugins/spellchecker/langs', 'wp-includes/js/tinymce/plugins/spellchecker/tinyspell.php', 'wp-includes/js/tinymce/plugins/wordpress/images', 'wp-includes/js/tinymce/plugins/wordpress/langs', 'wp-includes/js/tinymce/plugins/wordpress/popups.css', 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css', 'wp-includes/js/tinymce/plugins/wphelp', 'wp-includes/js/tinymce/themes/advanced/css', 'wp-includes/js/tinymce/themes/advanced/images', 'wp-includes/js/tinymce/themes/advanced/jscripts', 'wp-includes/js/tinymce/themes/advanced/langs', 'wp-includes/js/tinymce/tiny_mce_gzip.php', 'wp-includes/js/wp-ajax.js', 'wp-admin/admin-db.php', 'wp-admin/cat.js', 'wp-admin/categories.js', 'wp-admin/custom-fields.js', 'wp-admin/dbx-admin-key.js', 'wp-admin/edit-comments.js', 'wp-admin/install-rtl.css', 'wp-admin/install.css', 'wp-admin/upgrade-schema.php', 'wp-admin/upload-functions.php', 'wp-admin/upload-rtl.css', 'wp-admin/upload.css', 'wp-admin/upload.js', 'wp-admin/users.js', 'wp-admin/widgets-rtl.css', 'wp-admin/widgets.css', 'wp-admin/xfn.js', 'wp-includes/js/tinymce/license.html', 'wp-admin/cat-js.php', 'wp-admin/edit-form-ajax-cat.php', 'wp-admin/execute-pings.php', 'wp-admin/import/b2.php', 'wp-admin/import/btt.php', 'wp-admin/import/jkw.php', 'wp-admin/inline-uploading.php', 'wp-admin/link-categories.php', 'wp-admin/list-manipulation.js', 'wp-admin/list-manipulation.php', 'wp-includes/comment-functions.php', 'wp-includes/feed-functions.php', 'wp-includes/functions-compat.php', 'wp-includes/functions-formatting.php', 'wp-includes/functions-post.php', 'wp-includes/js/dbx-key.js', 'wp-includes/js/tinymce/plugins/autosave/langs/cs.js', 'wp-includes/js/tinymce/plugins/autosave/langs/sv.js', 'wp-includes/js/tinymce/themes/advanced/editor_template_src.js', 'wp-includes/links.php', 'wp-includes/pluggable-functions.php', 'wp-includes/template-functions-author.php', 'wp-includes/template-functions-category.php', 'wp-includes/template-functions-general.php', 'wp-includes/template-functions-links.php', 'wp-includes/template-functions-post.php', 'wp-includes/wp-l10n.php', 'wp-admin/import-b2.php', 'wp-admin/import-blogger.php', 'wp-admin/import-greymatter.php', 'wp-admin/import-livejournal.php', 'wp-admin/import-mt.php', 'wp-admin/import-rss.php', 'wp-admin/import-textpattern.php', 'wp-admin/quicktags.js', 'wp-images/fade-butt.png', 'wp-images/get-firefox.png', 'wp-images/header-shadow.png', 'wp-images/smilies', 'wp-images/wp-small.png', 'wp-images/wpminilogo.png', 'wp.php', 'wp-includes/gettext.php', 'wp-includes/streams.php', // MU 'wp-admin/wpmu-admin.php', 'wp-admin/wpmu-blogs.php', 'wp-admin/wpmu-edit.php', 'wp-admin/wpmu-options.php', 'wp-admin/wpmu-themes.php', 'wp-admin/wpmu-upgrade-site.php', 'wp-admin/wpmu-users.php', 'wp-includes/wpmu-default-filters.php', 'wp-includes/wpmu-functions.php', 'wpmu-settings.php', 'index-install.php', 'wp-admin/css/mu-rtl.css', 'wp-admin/css/mu.css', 'wp-admin/images/site-admin.png', 'wp-admin/includes/mu.php', 'wp-includes/images/wordpress-mu.png', // 3.0 'wp-admin/categories.php', 'wp-admin/edit-category-form.php', 'wp-admin/edit-page-form.php', 'wp-admin/edit-pages.php', 'wp-admin/images/wp-logo.gif', 'wp-admin/js/wp-gears.dev.js', 'wp-admin/js/wp-gears.js', 'wp-admin/options-misc.php', 'wp-admin/page-new.php', 'wp-admin/page.php', 'wp-admin/rtl.css', 'wp-admin/rtl.dev.css', 'wp-admin/update-links.php', 'wp-admin/wp-admin.css', 'wp-admin/wp-admin.dev.css', 'wp-includes/js/codepress', 'wp-includes/js/jquery/autocomplete.dev.js', 'wp-includes/js/jquery/interface.js', 'wp-includes/js/jquery/autocomplete.js', 'wp-includes/js/scriptaculous/prototype.js', 'wp-includes/js/tinymce/wp-tinymce.js', 'wp-content/themes/twentyten/searchform.php', 'wp-admin/import', 'wp-admin/images/ico-edit.png', 'wp-admin/images/fav-top.png', 'wp-admin/images/ico-close.png', 'wp-admin/images/admin-header-footer.png', 'wp-admin/images/screen-options-left.gif', 'wp-admin/images/ico-add.png', 'wp-admin/images/browse-happy.gif', 'wp-admin/images/ico-viewpage.png', ); /** * Upgrade the core of WordPress. * * This will create a .maintenance file at the base of the WordPress directory * to ensure that people can not access the web site, when the files are being * copied to their locations. * * The files in the {@link $_old_files} list will be removed and the new files * copied from the zip file after the database is upgraded. * * The steps for the upgrader for after the new release is downloaded and * unzipped is: * 1. Test unzipped location for select files to ensure that unzipped worked. * 2. Create the .maintenance file in current WordPress base. * 3. Copy new WordPress directory over old WordPress files. * 4. Upgrade WordPress to new version. * 5. Delete new WordPress directory path. * 6. Delete .maintenance file. * 7. Remove old files. * 8. Delete 'update_core' option. * * There are several areas of failure. For instance if PHP times out before step * 6, then you will not be able to access any portion of your site. Also, since * the upgrade will not continue where it left off, you will not be able to * automatically remove old files and remove the 'update_core' option. This * isn't that bad. * * If the copy of the new WordPress over the old fails, then the worse is that * the new WordPress directory will remain. * * If it is assumed that every file will be copied over, including plugins and * themes, then if you edit the default theme, you should rename it, so that * your changes remain. * * @since 2.7.0 * * @param string $from New release unzipped path. * @param string $to Path to old WordPress installation. * @return WP_Error|null WP_Error on failure, null on success. */ function update_core($from, $to) { global $wp_filesystem, $_old_files, $wpdb; @set_time_limit( 300 ); $php_version = phpversion(); $mysql_version = $wpdb->db_version(); $required_php_version = '4.3'; $required_mysql_version = '4.1.2'; $wp_version = '2.9.1'; $php_compat = version_compare( $php_version, $required_php_version, '>=' ); $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' ) || file_exists( WP_CONTENT_DIR . '/db.php' ); if ( !$mysql_compat || !$php_compat ) $wp_filesystem->delete($from, true); if ( !$mysql_compat && !$php_compat ) return new WP_Error( 'php_mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ) ); elseif ( !$php_compat ) return new WP_Error( 'php_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ) ); elseif ( !$mysql_compat ) return new WP_Error( 'mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ) ); // Sanity check the unzipped distribution apply_filters('update_feedback', __('Verifying the unpacked files…')); if ( !$wp_filesystem->exists($from . '/wordpress/wp-settings.php') || !$wp_filesystem->exists($from . '/wordpress/wp-admin/admin.php') || !$wp_filesystem->exists($from . '/wordpress/wp-includes/functions.php') ) { $wp_filesystem->delete($from, true); return new WP_Error('insane_distro', __('The update could not be unpacked') ); } apply_filters('update_feedback', __('Installing the latest version…')); // Create maintenance file to signal that we are upgrading $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; $maintenance_file = $to . '.maintenance'; $wp_filesystem->delete($maintenance_file); $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE); // Copy new versions of WP files into place. $result = copy_dir($from . '/wordpress', $to); if ( is_wp_error($result) ) { $wp_filesystem->delete($maintenance_file); $wp_filesystem->delete($from, true); return $result; } // Remove old files foreach ( $_old_files as $old_file ) { $old_file = $to . $old_file; if ( !$wp_filesystem->exists($old_file) ) continue; $wp_filesystem->delete($old_file, true); } // Upgrade DB with separate request apply_filters('update_feedback', __('Upgrading database…')); $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db'); wp_remote_post($db_upgrade_url, array('timeout' => 60)); // Remove working directory $wp_filesystem->delete($from, true); // Force refresh of update information if ( function_exists('delete_site_transient') ) delete_site_transient('update_core'); else delete_option('update_core'); // Remove maintenance file, we're done. $wp_filesystem->delete($maintenance_file); } ?>