Edit: update-core.php
<?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( // 2.0 'site-admin/import-b2.php', 'site-admin/import-blogger.php', 'site-admin/import-greymatter.php', 'site-admin/import-livejournal.php', 'site-admin/import-mt.php', 'site-admin/import-rss.php', 'site-admin/import-textpattern.php', 'site-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', // 2.0.8 'site-inc/js/tinymce/plugins/inlinepopups/readme.txt', // 2.1 'site-admin/edit-form-ajax-cat.php', 'site-admin/execute-pings.php', 'site-admin/inline-uploading.php', 'site-admin/link-categories.php', 'site-admin/list-manipulation.js', 'site-admin/list-manipulation.php', 'site-inc/comment-functions.php', 'site-inc/feed-functions.php', 'site-inc/functions-compat.php', 'site-inc/functions-formatting.php', 'site-inc/functions-post.php', 'site-inc/js/dbx-key.js', 'site-inc/js/tinymce/plugins/autosave/langs/cs.js', 'site-inc/js/tinymce/plugins/autosave/langs/sv.js', 'site-inc/links.php', 'site-inc/pluggable-functions.php', 'site-inc/template-functions-author.php', 'site-inc/template-functions-category.php', 'site-inc/template-functions-general.php', 'site-inc/template-functions-links.php', 'site-inc/template-functions-post.php', 'site-inc/wp-l10n.php', // 2.2 'site-admin/cat-js.php', 'site-admin/import/b2.php', 'site-inc/js/autosave-js.php', 'site-inc/js/list-manipulation-js.php', 'site-inc/js/wp-ajax-js.php', // 2.3 'site-admin/admin-db.php', 'site-admin/cat.js', 'site-admin/categories.js', 'site-admin/custom-fields.js', 'site-admin/dbx-admin-key.js', 'site-admin/edit-comments.js', 'site-admin/install-rtl.css', 'site-admin/install.css', 'site-admin/upgrade-schema.php', 'site-admin/upload-functions.php', 'site-admin/upload-rtl.css', 'site-admin/upload.css', 'site-admin/upload.js', 'site-admin/users.js', 'site-admin/widgets-rtl.css', 'site-admin/widgets.css', 'site-admin/xfn.js', 'site-inc/js/tinymce/license.html', // 2.5 'site-admin/css/upload.css', 'site-admin/images/box-bg-left.gif', 'site-admin/images/box-bg-right.gif', 'site-admin/images/box-bg.gif', 'site-admin/images/box-butt-left.gif', 'site-admin/images/box-butt-right.gif', 'site-admin/images/box-butt.gif', 'site-admin/images/box-head-left.gif', 'site-admin/images/box-head-right.gif', 'site-admin/images/box-head.gif', 'site-admin/images/heading-bg.gif', 'site-admin/images/login-bkg-bottom.gif', 'site-admin/images/login-bkg-tile.gif', 'site-admin/images/notice.gif', 'site-admin/images/toggle.gif', 'site-admin/includes/upload.php', 'site-admin/js/dbx-admin-key.js', 'site-admin/js/link-cat.js', 'site-admin/profile-update.php', 'site-admin/templates.php', 'site-inc/images/wlw/WpComments.png', 'site-inc/images/wlw/WpIcon.png', 'site-inc/images/wlw/WpWatermark.png', 'site-inc/js/dbx.js', 'site-inc/js/fat.js', 'site-inc/js/list-manipulation.js', 'site-inc/js/tinymce/langs/en.js', 'site-inc/js/tinymce/plugins/autosave/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/autosave/langs', 'site-inc/js/tinymce/plugins/directionality/images', 'site-inc/js/tinymce/plugins/directionality/langs', 'site-inc/js/tinymce/plugins/inlinepopups/css', 'site-inc/js/tinymce/plugins/inlinepopups/images', 'site-inc/js/tinymce/plugins/inlinepopups/jscripts', 'site-inc/js/tinymce/plugins/paste/images', 'site-inc/js/tinymce/plugins/paste/jscripts', 'site-inc/js/tinymce/plugins/paste/langs', 'site-inc/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php', 'site-inc/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php', 'site-inc/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php', 'site-inc/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php', 'site-inc/js/tinymce/plugins/spellchecker/css/spellchecker.css', 'site-inc/js/tinymce/plugins/spellchecker/images', 'site-inc/js/tinymce/plugins/spellchecker/langs', 'site-inc/js/tinymce/plugins/spellchecker/tinyspell.php', 'site-inc/js/tinymce/plugins/wordpress/images', 'site-inc/js/tinymce/plugins/wordpress/langs', 'site-inc/js/tinymce/plugins/wordpress/wordpress.css', 'site-inc/js/tinymce/plugins/wphelp', 'site-inc/js/tinymce/themes/advanced/css', 'site-inc/js/tinymce/themes/advanced/images', 'site-inc/js/tinymce/themes/advanced/jscripts', 'site-inc/js/tinymce/themes/advanced/langs', // 2.5.1 'site-inc/js/tinymce/tiny_mce_gzip.php', // 2.6 'site-admin/bookmarklet.php', 'site-inc/js/jquery/jquery.dimensions.min.js', 'site-inc/js/tinymce/plugins/wordpress/popups.css', 'site-inc/js/wp-ajax.js', // 2.7 'site-admin/css/press-this-ie-rtl.css', 'site-admin/css/press-this-ie.css', 'site-admin/css/upload-rtl.css', 'site-admin/edit-form.php', 'site-admin/images/comment-pill.gif', 'site-admin/images/comment-stalk-classic.gif', 'site-admin/images/comment-stalk-fresh.gif', 'site-admin/images/comment-stalk-rtl.gif', 'site-admin/images/del.png', 'site-admin/images/gear.png', 'site-admin/images/media-button-gallery.gif', 'site-admin/images/media-buttons.gif', 'site-admin/images/postbox-bg.gif', 'site-admin/images/tab.png', 'site-admin/images/tail.gif', 'site-admin/js/forms.js', 'site-admin/js/upload.js', 'site-admin/link-import.php', 'site-inc/images/audio.png', 'site-inc/images/css.png', 'site-inc/images/default.png', 'site-inc/images/doc.png', 'site-inc/images/exe.png', 'site-inc/images/html.png', 'site-inc/images/js.png', 'site-inc/images/pdf.png', 'site-inc/images/swf.png', 'site-inc/images/tar.png', 'site-inc/images/text.png', 'site-inc/images/video.png', 'site-inc/images/zip.png', 'site-inc/js/tinymce/tiny_mce_config.php', 'site-inc/js/tinymce/tiny_mce_ext.js', // 2.8 'site-admin/js/users.js', 'site-inc/js/swfupload/plugins/swfupload.documentready.js', 'site-inc/js/swfupload/plugins/swfupload.graceful_degradation.js', 'site-inc/js/swfupload/swfupload_f9.swf', 'site-inc/js/tinymce/plugins/autosave', 'site-inc/js/tinymce/plugins/paste/css', 'site-inc/js/tinymce/utils/mclayer.js', 'site-inc/js/tinymce/wordpress.css', // 2.8.5 'site-admin/import/btt.php', 'site-admin/import/jkw.php', // 2.9 'site-admin/js/page.dev.js', 'site-admin/js/page.js', 'site-admin/js/set-post-thumbnail-handler.dev.js', 'site-admin/js/set-post-thumbnail-handler.js', 'site-admin/js/slug.dev.js', 'site-admin/js/slug.js', 'site-inc/gettext.php', 'site-inc/js/tinymce/plugins/wordpress/js', 'site-inc/streams.php', // MU 'README.txt', 'htaccess.dist', 'index-install.php', 'site-admin/css/mu-rtl.css', 'site-admin/css/mu.css', 'site-admin/images/site-admin.png', 'site-admin/includes/mu.php', 'site-admin/wpmu-admin.php', 'site-admin/wpmu-blogs.php', 'site-admin/wpmu-edit.php', 'site-admin/wpmu-options.php', 'site-admin/wpmu-themes.php', 'site-admin/wpmu-upgrade-site.php', 'site-admin/wpmu-users.php', 'site-inc/images/wordpress-mu.png', 'site-inc/wpmu-default-filters.php', 'site-inc/wpmu-functions.php', 'wpmu-settings.php', // 3.0 'site-admin/categories.php', 'site-admin/edit-category-form.php', 'site-admin/edit-page-form.php', 'site-admin/edit-pages.php', 'site-admin/images/admin-header-footer.png', 'site-admin/images/browse-happy.gif', 'site-admin/images/ico-add.png', 'site-admin/images/ico-close.png', 'site-admin/images/ico-edit.png', 'site-admin/images/ico-viewpage.png', 'site-admin/images/fav-top.png', 'site-admin/images/screen-options-left.gif', 'site-admin/images/wp-logo-vs.gif', 'site-admin/images/wp-logo.gif', 'site-admin/import', 'site-admin/js/wp-gears.dev.js', 'site-admin/js/wp-gears.js', 'site-admin/options-misc.php', 'site-admin/page-new.php', 'site-admin/page.php', 'site-admin/rtl.css', 'site-admin/rtl.dev.css', 'site-admin/update-links.php', 'site-admin/site-admin.css', 'site-admin/site-admin.dev.css', 'site-inc/js/codepress', 'site-inc/js/codepress/engines/khtml.js', 'site-inc/js/codepress/engines/older.js', 'site-inc/js/jquery/autocomplete.dev.js', 'site-inc/js/jquery/autocomplete.js', 'site-inc/js/jquery/interface.js', 'site-inc/js/scriptaculous/prototype.js', // Following file added back in 5.1 see #45645 //'site-inc/js/tinymce/wp-tinymce.js', // 3.1 'site-admin/edit-attachment-rows.php', 'site-admin/edit-link-categories.php', 'site-admin/edit-link-category-form.php', 'site-admin/edit-post-rows.php', 'site-admin/images/button-grad-active-vs.png', 'site-admin/images/button-grad-vs.png', 'site-admin/images/fav-arrow-vs-rtl.gif', 'site-admin/images/fav-arrow-vs.gif', 'site-admin/images/fav-top-vs.gif', 'site-admin/images/list-vs.png', 'site-admin/images/screen-options-right-up.gif', 'site-admin/images/screen-options-right.gif', 'site-admin/images/visit-site-button-grad-vs.gif', 'site-admin/images/visit-site-button-grad.gif', 'site-admin/link-category.php', 'site-admin/sidebar.php', 'site-inc/classes.php', 'site-inc/js/tinymce/blank.htm', 'site-inc/js/tinymce/plugins/media/css/content.css', 'site-inc/js/tinymce/plugins/media/img', 'site-inc/js/tinymce/plugins/safari', // 3.2 'site-admin/images/logo-login.gif', 'site-admin/images/star.gif', 'site-admin/js/list-table.dev.js', 'site-admin/js/list-table.js', 'site-inc/default-embeds.php', 'site-inc/js/tinymce/plugins/wordpress/img/help.gif', 'site-inc/js/tinymce/plugins/wordpress/img/more.gif', 'site-inc/js/tinymce/plugins/wordpress/img/toolbars.gif', 'site-inc/js/tinymce/themes/advanced/img/fm.gif', 'site-inc/js/tinymce/themes/advanced/img/sflogo.png', // 3.3 'site-admin/css/colors-classic-rtl.css', 'site-admin/css/colors-classic-rtl.dev.css', 'site-admin/css/colors-fresh-rtl.css', 'site-admin/css/colors-fresh-rtl.dev.css', 'site-admin/css/dashboard-rtl.dev.css', 'site-admin/css/dashboard.dev.css', 'site-admin/css/global-rtl.css', 'site-admin/css/global-rtl.dev.css', 'site-admin/css/global.css', 'site-admin/css/global.dev.css', 'site-admin/css/install-rtl.dev.css', 'site-admin/css/login-rtl.dev.css', 'site-admin/css/login.dev.css', 'site-admin/css/ms.css', 'site-admin/css/ms.dev.css', 'site-admin/css/nav-menu-rtl.css', 'site-admin/css/nav-menu-rtl.dev.css', 'site-admin/css/nav-menu.css', 'site-admin/css/nav-menu.dev.css', 'site-admin/css/plugin-install-rtl.css', 'site-admin/css/plugin-install-rtl.dev.css', 'site-admin/css/plugin-install.css', 'site-admin/css/plugin-install.dev.css', 'site-admin/css/press-this-rtl.dev.css', 'site-admin/css/press-this.dev.css', 'site-admin/css/theme-editor-rtl.css', 'site-admin/css/theme-editor-rtl.dev.css', 'site-admin/css/theme-editor.css', 'site-admin/css/theme-editor.dev.css', 'site-admin/css/theme-install-rtl.css', 'site-admin/css/theme-install-rtl.dev.css', 'site-admin/css/theme-install.css', 'site-admin/css/theme-install.dev.css', 'site-admin/css/widgets-rtl.dev.css', 'site-admin/css/widgets.dev.css', 'site-admin/includes/internal-linking.php', 'site-inc/images/admin-bar-sprite-rtl.png', 'site-inc/js/jquery/ui.button.js', 'site-inc/js/jquery/ui.core.js', 'site-inc/js/jquery/ui.dialog.js', 'site-inc/js/jquery/ui.draggable.js', 'site-inc/js/jquery/ui.droppable.js', 'site-inc/js/jquery/ui.mouse.js', 'site-inc/js/jquery/ui.position.js', 'site-inc/js/jquery/ui.resizable.js', 'site-inc/js/jquery/ui.selectable.js', 'site-inc/js/jquery/ui.sortable.js', 'site-inc/js/jquery/ui.tabs.js', 'site-inc/js/jquery/ui.widget.js', 'site-inc/js/l10n.dev.js', 'site-inc/js/l10n.js', 'site-inc/js/tinymce/plugins/wplink/css', 'site-inc/js/tinymce/plugins/wplink/img', 'site-inc/js/tinymce/plugins/wplink/js', 'site-inc/js/tinymce/themes/advanced/img/wpicons.png', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/butt2.png', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/button_bg.png', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/down_arrow.gif', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/fade-butt.png', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/separator.gif', // Don't delete, yet: 'wp-rss.php', // Don't delete, yet: 'wp-rdf.php', // Don't delete, yet: 'wp-rss2.php', // Don't delete, yet: 'wp-commentsrss2.php', // Don't delete, yet: 'wp-atom.php', // Don't delete, yet: 'wp-feed.php', // 3.4 'site-admin/images/gray-star.png', 'site-admin/images/logo-login.png', 'site-admin/images/star.png', 'site-admin/index-extra.php', 'site-admin/network/index-extra.php', 'site-admin/user/index-extra.php', 'site-admin/images/screenshots/admin-flyouts.png', 'site-admin/images/screenshots/coediting.png', 'site-admin/images/screenshots/drag-and-drop.png', 'site-admin/images/screenshots/help-screen.png', 'site-admin/images/screenshots/media-icon.png', 'site-admin/images/screenshots/new-feature-pointer.png', 'site-admin/images/screenshots/welcome-screen.png', 'site-inc/css/editor-buttons.css', 'site-inc/css/editor-buttons.dev.css', 'site-inc/js/tinymce/plugins/paste/blank.htm', 'site-inc/js/tinymce/plugins/wordpress/css', 'site-inc/js/tinymce/plugins/wordpress/editor_plugin.dev.js', 'site-inc/js/tinymce/plugins/wordpress/img/embedded.png', 'site-inc/js/tinymce/plugins/wordpress/img/more_bug.gif', 'site-inc/js/tinymce/plugins/wordpress/img/page_bug.gif', 'site-inc/js/tinymce/plugins/wpdialogs/editor_plugin.dev.js', 'site-inc/js/tinymce/plugins/wpeditimage/css/editimage-rtl.css', 'site-inc/js/tinymce/plugins/wpeditimage/editor_plugin.dev.js', 'site-inc/js/tinymce/plugins/wpfullscreen/editor_plugin.dev.js', 'site-inc/js/tinymce/plugins/wpgallery/editor_plugin.dev.js', 'site-inc/js/tinymce/plugins/wpgallery/img/gallery.png', 'site-inc/js/tinymce/plugins/wplink/editor_plugin.dev.js', // Don't delete, yet: 'wp-pass.php', // Don't delete, yet: 'wp-register.php', // 3.5 'site-admin/gears-manifest.php', 'site-admin/includes/manifest.php', 'site-admin/images/archive-link.png', 'site-admin/images/blue-grad.png', 'site-admin/images/button-grad-active.png', 'site-admin/images/button-grad.png', 'site-admin/images/ed-bg-vs.gif', 'site-admin/images/ed-bg.gif', 'site-admin/images/fade-butt.png', 'site-admin/images/fav-arrow-rtl.gif', 'site-admin/images/fav-arrow.gif', 'site-admin/images/fav-vs.png', 'site-admin/images/fav.png', 'site-admin/images/gray-grad.png', 'site-admin/images/loading-publish.gif', 'site-admin/images/logo-ghost.png', 'site-admin/images/logo.gif', 'site-admin/images/menu-arrow-frame-rtl.png', 'site-admin/images/menu-arrow-frame.png', 'site-admin/images/menu-arrows.gif', 'site-admin/images/menu-bits-rtl-vs.gif', 'site-admin/images/menu-bits-rtl.gif', 'site-admin/images/menu-bits-vs.gif', 'site-admin/images/menu-bits.gif', 'site-admin/images/menu-dark-rtl-vs.gif', 'site-admin/images/menu-dark-rtl.gif', 'site-admin/images/menu-dark-vs.gif', 'site-admin/images/menu-dark.gif', 'site-admin/images/required.gif', 'site-admin/images/screen-options-toggle-vs.gif', 'site-admin/images/screen-options-toggle.gif', 'site-admin/images/toggle-arrow-rtl.gif', 'site-admin/images/toggle-arrow.gif', 'site-admin/images/upload-classic.png', 'site-admin/images/upload-fresh.png', 'site-admin/images/white-grad-active.png', 'site-admin/images/white-grad.png', 'site-admin/images/widgets-arrow-vs.gif', 'site-admin/images/widgets-arrow.gif', 'site-admin/images/wpspin_dark.gif', 'site-inc/images/upload.png', 'site-inc/js/prototype.js', 'site-inc/js/scriptaculous', 'site-admin/css/site-admin-rtl.dev.css', 'site-admin/css/site-admin.dev.css', 'site-admin/css/media-rtl.dev.css', 'site-admin/css/media.dev.css', 'site-admin/css/colors-classic.dev.css', 'site-admin/css/customize-controls-rtl.dev.css', 'site-admin/css/customize-controls.dev.css', 'site-admin/css/ie-rtl.dev.css', 'site-admin/css/ie.dev.css', 'site-admin/css/install.dev.css', 'site-admin/css/colors-fresh.dev.css', 'site-inc/js/customize-base.dev.js', 'site-inc/js/json2.dev.js', 'site-inc/js/comment-reply.dev.js', 'site-inc/js/customize-preview.dev.js', 'site-inc/js/wplink.dev.js', 'site-inc/js/tw-sack.dev.js', 'site-inc/js/wp-list-revisions.dev.js', 'site-inc/js/autosave.dev.js', 'site-inc/js/admin-bar.dev.js', 'site-inc/js/quicktags.dev.js', 'site-inc/js/wp-ajax-response.dev.js', 'site-inc/js/wp-pointer.dev.js', 'site-inc/js/hoverIntent.dev.js', 'site-inc/js/colorpicker.dev.js', 'site-inc/js/wp-lists.dev.js', 'site-inc/js/customize-loader.dev.js', 'site-inc/js/jquery/jquery.table-hotkeys.dev.js', 'site-inc/js/jquery/jquery.color.dev.js', 'site-inc/js/jquery/jquery.color.js', 'site-inc/js/jquery/jquery.hotkeys.dev.js', 'site-inc/js/jquery/jquery.form.dev.js', 'site-inc/js/jquery/suggest.dev.js', 'site-admin/js/xfn.dev.js', 'site-admin/js/set-post-thumbnail.dev.js', 'site-admin/js/comment.dev.js', 'site-admin/js/theme.dev.js', 'site-admin/js/cat.dev.js', 'site-admin/js/password-strength-meter.dev.js', 'site-admin/js/user-profile.dev.js', 'site-admin/js/theme-preview.dev.js', 'site-admin/js/post.dev.js', 'site-admin/js/media-upload.dev.js', 'site-admin/js/word-count.dev.js', 'site-admin/js/plugin-install.dev.js', 'site-admin/js/edit-comments.dev.js', 'site-admin/js/media-gallery.dev.js', 'site-admin/js/custom-fields.dev.js', 'site-admin/js/custom-background.dev.js', 'site-admin/js/common.dev.js', 'site-admin/js/inline-edit-tax.dev.js', 'site-admin/js/gallery.dev.js', 'site-admin/js/utils.dev.js', 'site-admin/js/widgets.dev.js', 'site-admin/js/wp-fullscreen.dev.js', 'site-admin/js/nav-menu.dev.js', 'site-admin/js/dashboard.dev.js', 'site-admin/js/link.dev.js', 'site-admin/js/user-suggest.dev.js', 'site-admin/js/postbox.dev.js', 'site-admin/js/tags.dev.js', 'site-admin/js/image-edit.dev.js', 'site-admin/js/media.dev.js', 'site-admin/js/customize-controls.dev.js', 'site-admin/js/inline-edit-post.dev.js', 'site-admin/js/categories.dev.js', 'site-admin/js/editor.dev.js', 'site-inc/js/tinymce/plugins/wpeditimage/js/editimage.dev.js', 'site-inc/js/tinymce/plugins/wpdialogs/js/popup.dev.js', 'site-inc/js/tinymce/plugins/wpdialogs/js/wpdialog.dev.js', 'site-inc/js/plupload/handlers.dev.js', 'site-inc/js/plupload/wp-plupload.dev.js', 'site-inc/js/swfupload/handlers.dev.js', 'site-inc/js/jcrop/jquery.Jcrop.dev.js', 'site-inc/js/jcrop/jquery.Jcrop.js', 'site-inc/js/jcrop/jquery.Jcrop.css', 'site-inc/js/imgareaselect/jquery.imgareaselect.dev.js', 'site-inc/css/wp-pointer.dev.css', 'site-inc/css/editor.dev.css', 'site-inc/css/jquery-ui-dialog.dev.css', 'site-inc/css/admin-bar-rtl.dev.css', 'site-inc/css/admin-bar.dev.css', 'site-inc/js/jquery/ui/jquery.effects.clip.min.js', 'site-inc/js/jquery/ui/jquery.effects.scale.min.js', 'site-inc/js/jquery/ui/jquery.effects.blind.min.js', 'site-inc/js/jquery/ui/jquery.effects.core.min.js', 'site-inc/js/jquery/ui/jquery.effects.shake.min.js', 'site-inc/js/jquery/ui/jquery.effects.fade.min.js', 'site-inc/js/jquery/ui/jquery.effects.explode.min.js', 'site-inc/js/jquery/ui/jquery.effects.slide.min.js', 'site-inc/js/jquery/ui/jquery.effects.drop.min.js', 'site-inc/js/jquery/ui/jquery.effects.highlight.min.js', 'site-inc/js/jquery/ui/jquery.effects.bounce.min.js', 'site-inc/js/jquery/ui/jquery.effects.pulsate.min.js', 'site-inc/js/jquery/ui/jquery.effects.transfer.min.js', 'site-inc/js/jquery/ui/jquery.effects.fold.min.js', 'site-admin/images/screenshots/captions-1.png', 'site-admin/images/screenshots/captions-2.png', 'site-admin/images/screenshots/flex-header-1.png', 'site-admin/images/screenshots/flex-header-2.png', 'site-admin/images/screenshots/flex-header-3.png', 'site-admin/images/screenshots/flex-header-media-library.png', 'site-admin/images/screenshots/theme-customizer.png', 'site-admin/images/screenshots/twitter-embed-1.png', 'site-admin/images/screenshots/twitter-embed-2.png', 'site-admin/js/utils.js', 'site-admin/options-privacy.php', 'wp-app.php', 'site-inc/class-wp-atom-server.php', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/ui.css', // 3.5.2 'site-inc/js/swfupload/swfupload-all.js', // 3.6 'site-admin/js/revisions-js.php', 'site-admin/images/screenshots', 'site-admin/js/categories.js', 'site-admin/js/categories.min.js', 'site-admin/js/custom-fields.js', 'site-admin/js/custom-fields.min.js', // 3.7 'site-admin/js/cat.js', 'site-admin/js/cat.min.js', 'site-inc/js/tinymce/plugins/wpeditimage/js/editimage.min.js', // 3.8 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/page_bug.gif', 'site-inc/js/tinymce/themes/advanced/skins/wp_theme/img/more_bug.gif', 'site-inc/js/thickbox/tb-close-2x.png', 'site-inc/js/thickbox/tb-close.png', 'site-inc/images/wpmini-blue-2x.png', 'site-inc/images/wpmini-blue.png', 'site-admin/css/colors-fresh.css', 'site-admin/css/colors-classic.css', 'site-admin/css/colors-fresh.min.css', 'site-admin/css/colors-classic.min.css', 'site-admin/js/about.min.js', 'site-admin/js/about.js', 'site-admin/images/arrows-dark-vs-2x.png', 'site-admin/images/wp-logo-vs.png', 'site-admin/images/arrows-dark-vs.png', 'site-admin/images/wp-logo.png', 'site-admin/images/arrows-pr.png', 'site-admin/images/arrows-dark.png', 'site-admin/images/press-this.png', 'site-admin/images/press-this-2x.png', 'site-admin/images/arrows-vs-2x.png', 'site-admin/images/welcome-icons.png', 'site-admin/images/wp-logo-2x.png', 'site-admin/images/stars-rtl-2x.png', 'site-admin/images/arrows-dark-2x.png', 'site-admin/images/arrows-pr-2x.png', 'site-admin/images/menu-shadow-rtl.png', 'site-admin/images/arrows-vs.png', 'site-admin/images/about-search-2x.png', 'site-admin/images/bubble_bg-rtl-2x.gif', 'site-admin/images/wp-badge-2x.png', 'site-admin/images/wordpress-logo-2x.png', 'site-admin/images/bubble_bg-rtl.gif', 'site-admin/images/wp-badge.png', 'site-admin/images/menu-shadow.png', 'site-admin/images/about-globe-2x.png', 'site-admin/images/welcome-icons-2x.png', 'site-admin/images/stars-rtl.png', 'site-admin/images/wp-logo-vs-2x.png', 'site-admin/images/about-updates-2x.png', // 3.9 'site-admin/css/colors.css', 'site-admin/css/colors.min.css', 'site-admin/css/colors-rtl.css', 'site-admin/css/colors-rtl.min.css', // Following files added back in 4.5 see #36083 // 'site-admin/css/media-rtl.min.css', // 'site-admin/css/media.min.css', // 'site-admin/css/farbtastic-rtl.min.css', 'site-admin/images/lock-2x.png', 'site-admin/images/lock.png', 'site-admin/js/theme-preview.js', 'site-admin/js/theme-install.min.js', 'site-admin/js/theme-install.js', 'site-admin/js/theme-preview.min.js', 'site-inc/js/plupload/plupload.html4.js', 'site-inc/js/plupload/plupload.html5.js', 'site-inc/js/plupload/changelog.txt', 'site-inc/js/plupload/plupload.silverlight.js', 'site-inc/js/plupload/plupload.flash.js', // Added back in 4.9 [41328], see #41755 // 'site-inc/js/plupload/plupload.js', 'site-inc/js/tinymce/plugins/spellchecker', 'site-inc/js/tinymce/plugins/inlinepopups', 'site-inc/js/tinymce/plugins/media/js', 'site-inc/js/tinymce/plugins/media/css', 'site-inc/js/tinymce/plugins/wordpress/img', 'site-inc/js/tinymce/plugins/wpdialogs/js', 'site-inc/js/tinymce/plugins/wpeditimage/img', 'site-inc/js/tinymce/plugins/wpeditimage/js', 'site-inc/js/tinymce/plugins/wpeditimage/css', 'site-inc/js/tinymce/plugins/wpgallery/img', 'site-inc/js/tinymce/plugins/wpfullscreen/css', 'site-inc/js/tinymce/plugins/paste/js', 'site-inc/js/tinymce/themes/advanced', 'site-inc/js/tinymce/tiny_mce.js', 'site-inc/js/tinymce/mark_loaded_src.js', 'site-inc/js/tinymce/wp-tinymce-schema.js', 'site-inc/js/tinymce/plugins/media/editor_plugin.js', 'site-inc/js/tinymce/plugins/media/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/media/media.htm', 'site-inc/js/tinymce/plugins/wpview/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wpview/editor_plugin.js', 'site-inc/js/tinymce/plugins/directionality/editor_plugin.js', 'site-inc/js/tinymce/plugins/directionality/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wordpress/editor_plugin.js', 'site-inc/js/tinymce/plugins/wordpress/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wpdialogs/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wpdialogs/editor_plugin.js', 'site-inc/js/tinymce/plugins/wpeditimage/editimage.html', 'site-inc/js/tinymce/plugins/wpeditimage/editor_plugin.js', 'site-inc/js/tinymce/plugins/wpeditimage/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/fullscreen/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/fullscreen/fullscreen.htm', 'site-inc/js/tinymce/plugins/fullscreen/editor_plugin.js', 'site-inc/js/tinymce/plugins/wplink/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wplink/editor_plugin.js', 'site-inc/js/tinymce/plugins/wpgallery/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wpgallery/editor_plugin.js', 'site-inc/js/tinymce/plugins/tabfocus/editor_plugin.js', 'site-inc/js/tinymce/plugins/tabfocus/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/wpfullscreen/editor_plugin.js', 'site-inc/js/tinymce/plugins/wpfullscreen/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/paste/editor_plugin.js', 'site-inc/js/tinymce/plugins/paste/pasteword.htm', 'site-inc/js/tinymce/plugins/paste/editor_plugin_src.js', 'site-inc/js/tinymce/plugins/paste/pastetext.htm', 'site-inc/js/tinymce/langs/wp-langs.php', // 4.1 'site-inc/js/jquery/ui/jquery.ui.accordion.min.js', 'site-inc/js/jquery/ui/jquery.ui.autocomplete.min.js', 'site-inc/js/jquery/ui/jquery.ui.button.min.js', 'site-inc/js/jquery/ui/jquery.ui.core.min.js', 'site-inc/js/jquery/ui/jquery.ui.datepicker.min.js', 'site-inc/js/jquery/ui/jquery.ui.dialog.min.js', 'site-inc/js/jquery/ui/jquery.ui.draggable.min.js', 'site-inc/js/jquery/ui/jquery.ui.droppable.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-blind.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-bounce.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-clip.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-drop.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-explode.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-fade.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-fold.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-highlight.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-pulsate.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-scale.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-shake.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-slide.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect-transfer.min.js', 'site-inc/js/jquery/ui/jquery.ui.effect.min.js', 'site-inc/js/jquery/ui/jquery.ui.menu.min.js', 'site-inc/js/jquery/ui/jquery.ui.mouse.min.js', 'site-inc/js/jquery/ui/jquery.ui.position.min.js', 'site-inc/js/jquery/ui/jquery.ui.progressbar.min.js', 'site-inc/js/jquery/ui/jquery.ui.resizable.min.js', 'site-inc/js/jquery/ui/jquery.ui.selectable.min.js', 'site-inc/js/jquery/ui/jquery.ui.slider.min.js', 'site-inc/js/jquery/ui/jquery.ui.sortable.min.js', 'site-inc/js/jquery/ui/jquery.ui.spinner.min.js', 'site-inc/js/jquery/ui/jquery.ui.tabs.min.js', 'site-inc/js/jquery/ui/jquery.ui.tooltip.min.js', 'site-inc/js/jquery/ui/jquery.ui.widget.min.js', 'site-inc/js/tinymce/skins/wordpress/images/dashicon-no-alt.png', // 4.3 'site-admin/js/wp-fullscreen.js', 'site-admin/js/wp-fullscreen.min.js', 'site-inc/js/tinymce/wp-mce-help.php', 'site-inc/js/tinymce/plugins/wpfullscreen', // 4.5 'site-inc/theme-compat/comments-popup.php', // 4.6 'site-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628. // 4.8 'site-inc/js/tinymce/plugins/wpembed', 'site-inc/js/tinymce/plugins/media/moxieplayer.swf', 'site-inc/js/tinymce/skins/lightgray/fonts/readme.md', 'site-inc/js/tinymce/skins/lightgray/fonts/tinymce-small.json', 'site-inc/js/tinymce/skins/lightgray/fonts/tinymce.json', 'site-inc/js/tinymce/skins/lightgray/skin.ie7.min.css', // 4.9 'site-admin/css/press-this-editor-rtl.css', 'site-admin/css/press-this-editor-rtl.min.css', 'site-admin/css/press-this-editor.css', 'site-admin/css/press-this-editor.min.css', 'site-admin/css/press-this-rtl.css', 'site-admin/css/press-this-rtl.min.css', 'site-admin/css/press-this.css', 'site-admin/css/press-this.min.css', 'site-admin/includes/class-wp-press-this.php', 'site-admin/js/bookmarklet.js', 'site-admin/js/bookmarklet.min.js', 'site-admin/js/press-this.js', 'site-admin/js/press-this.min.js', 'site-inc/js/mediaelement/background.png', 'site-inc/js/mediaelement/bigplay.png', 'site-inc/js/mediaelement/bigplay.svg', 'site-inc/js/mediaelement/controls.png', 'site-inc/js/mediaelement/controls.svg', 'site-inc/js/mediaelement/flashmediaelement.swf', 'site-inc/js/mediaelement/froogaloop.min.js', 'site-inc/js/mediaelement/jumpforward.png', 'site-inc/js/mediaelement/loading.gif', 'site-inc/js/mediaelement/silverlightmediaelement.xap', 'site-inc/js/mediaelement/skipback.png', 'site-inc/js/plupload/plupload.flash.swf', 'site-inc/js/plupload/plupload.full.min.js', 'site-inc/js/plupload/plupload.silverlight.xap', 'site-inc/js/swfupload/plugins', 'site-inc/js/swfupload/swfupload.swf', // 4.9.2 'site-inc/js/mediaelement/lang', 'site-inc/js/mediaelement/lang/ca.js', 'site-inc/js/mediaelement/lang/cs.js', 'site-inc/js/mediaelement/lang/de.js', 'site-inc/js/mediaelement/lang/es.js', 'site-inc/js/mediaelement/lang/fa.js', 'site-inc/js/mediaelement/lang/fr.js', 'site-inc/js/mediaelement/lang/hr.js', 'site-inc/js/mediaelement/lang/hu.js', 'site-inc/js/mediaelement/lang/it.js', 'site-inc/js/mediaelement/lang/ja.js', 'site-inc/js/mediaelement/lang/ko.js', 'site-inc/js/mediaelement/lang/nl.js', 'site-inc/js/mediaelement/lang/pl.js', 'site-inc/js/mediaelement/lang/pt.js', 'site-inc/js/mediaelement/lang/ro.js', 'site-inc/js/mediaelement/lang/ru.js', 'site-inc/js/mediaelement/lang/sk.js', 'site-inc/js/mediaelement/lang/sv.js', 'site-inc/js/mediaelement/lang/uk.js', 'site-inc/js/mediaelement/lang/zh-cn.js', 'site-inc/js/mediaelement/lang/zh.js', 'site-inc/js/mediaelement/mediaelement-flash-audio-ogg.swf', 'site-inc/js/mediaelement/mediaelement-flash-audio.swf', 'site-inc/js/mediaelement/mediaelement-flash-video-hls.swf', 'site-inc/js/mediaelement/mediaelement-flash-video-mdash.swf', 'site-inc/js/mediaelement/mediaelement-flash-video.swf', 'site-inc/js/mediaelement/renderers/dailymotion.js', 'site-inc/js/mediaelement/renderers/dailymotion.min.js', 'site-inc/js/mediaelement/renderers/facebook.js', 'site-inc/js/mediaelement/renderers/facebook.min.js', 'site-inc/js/mediaelement/renderers/soundcloud.js', 'site-inc/js/mediaelement/renderers/soundcloud.min.js', 'site-inc/js/mediaelement/renderers/twitch.js', 'site-inc/js/mediaelement/renderers/twitch.min.js', // 5.0 'site-inc/js/codemirror/jshint.js', // 5.1 'site-inc/random_compat/random_bytes_openssl.php', 'site-inc/js/tinymce/wp-tinymce.js.gz', ); /** * Stores new files in wp-content to copy * * The contents of this array indicate any new bundled plugins/themes which * should be installed with the WordPress Upgrade. These items will not be * re-installed in future upgrades, this behaviour is controlled by the * introduced version present here being older than the current installed version. * * The content of this array should follow the following format: * Filename (relative to wp-content) => Introduced version * Directories should be noted by suffixing it with a trailing slash (/) * * @since 3.2.0 * @since 4.7.0 New themes were not automatically installed for 4.4-4.6 on * upgrade. New themes are now installed again. To disable new * themes from being installed on upgrade, explicitly define * CORE_UPGRADE_SKIP_NEW_BUNDLED as false. * @global array $_new_bundled_files * @var array * @name $_new_bundled_files */ global $_new_bundled_files; $_new_bundled_files = array( 'plugins/akismet/' => '2.0', 'themes/twentyten/' => '3.0', 'themes/twentyeleven/' => '3.2', 'themes/twentytwelve/' => '3.5', 'themes/twentythirteen/' => '3.6', 'themes/twentyfourteen/' => '3.8', 'themes/twentyfifteen/' => '4.1', 'themes/twentysixteen/' => '4.4', 'themes/twentyseventeen/' => '4.7', 'themes/twentynineteen/' => '5.0', ); /** * Upgrades the core of WordPress. * * This will create a .maintenance file at the base of the WordPress directory * to ensure that people can not access the web site, when the files are being * copied to their locations. * * The files in the `$_old_files` list will be removed and the new files * copied from the zip file after the database is upgraded. * * The files in the `$_new_bundled_files` list will be added to the installation * if the version is greater than or equal to the old version being 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. * 4.1. Copy all files/folders other than wp-content * 4.2. Copy any language files to WP_LANG_DIR (which may differ from WP_CONTENT_DIR * 4.3. Copy any new bundled themes/plugins to their respective locations * 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 * * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. * @global array $_old_files * @global array $_new_bundled_files * @global wpdb $wpdb * @global string $wp_version * @global string $required_php_version * @global string $required_mysql_version * * @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, $_new_bundled_files, $wpdb; @set_time_limit( 300 ); /** * Filters feedback messages displayed during the core update process. * * The filter is first evaluated after the zip file for the latest version * has been downloaded and unzipped. It is evaluated five more times during * the process: * * 1. Before WordPress begins the core upgrade process. * 2. Before Maintenance Mode is enabled. * 3. Before WordPress begins copying over the necessary files. * 4. Before Maintenance Mode is disabled. * 5. Before the database is upgraded. * * @since 2.5.0 * * @param string $feedback The core update feedback messages. */ apply_filters( 'update_feedback', __( 'Verifying the unpacked files…' ) ); // Sanity check the unzipped distribution. $distro = ''; $roots = array( '/wordpress/', '/wordpress-mu/' ); foreach ( $roots as $root ) { if ( $wp_filesystem->exists( $from . $root . 'readme.html' ) && $wp_filesystem->exists( $from . $root . 'site-inc/version.php' ) ) { $distro = $root; break; } } if ( ! $distro ) { $wp_filesystem->delete( $from, true ); return new WP_Error( 'insane_distro', __( 'The update could not be unpacked' ) ); } /* * Import $wp_version, $required_php_version, and $required_mysql_version from the new version. * DO NOT globalise any variables imported from `version-current.php` in this function. * * BC Note: $wp_filesystem->wp_content_dir() returned unslashed pre-2.8 */ $versions_file = trailingslashit( $wp_filesystem->wp_content_dir() ) . 'upgrade/version-current.php'; if ( ! $wp_filesystem->copy( $from . $distro . 'site-inc/version.php', $versions_file ) ) { $wp_filesystem->delete( $from, true ); return new WP_Error( 'copy_failed_for_version_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'site-inc/version.php' ); } $wp_filesystem->chmod( $versions_file, FS_CHMOD_FILE ); require( WP_CONTENT_DIR . '/upgrade/version-current.php' ); $wp_filesystem->delete( $versions_file ); $php_version = phpversion(); $mysql_version = $wpdb->db_version(); $old_wp_version = $GLOBALS['wp_version']; // The version of WordPress we're updating from $development_build = ( false !== strpos( $old_wp_version . $wp_version, '-' ) ); // a dash in the version indicates a Development release $php_compat = version_compare( $php_version, $required_php_version, '>=' ); if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) ) { $mysql_compat = true; } else { $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' ); } 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 ) ); } /** This filter is documented in site-admin/includes/update-core.php */ apply_filters( 'update_feedback', __( 'Preparing to install the latest version…' ) ); // Don't copy wp-content, we'll deal with that below // We also copy version.php last so failed updates report their old version $skip = array( 'wp-content', 'site-inc/version.php' ); $check_is_writable = array(); // Check to see which files don't really need updating - only available for 3.7 and higher if ( function_exists( 'get_core_checksums' ) ) { // Find the local version of the working directory $working_dir_local = WP_CONTENT_DIR . '/upgrade/' . basename( $from ) . $distro; $checksums = get_core_checksums( $wp_version, isset( $wp_local_package ) ? $wp_local_package : 'en_US' ); if ( is_array( $checksums ) && isset( $checksums[ $wp_version ] ) ) { $checksums = $checksums[ $wp_version ]; // Compat code for 3.7-beta2 } if ( is_array( $checksums ) ) { foreach ( $checksums as $file => $checksum ) { if ( 'wp-content' == substr( $file, 0, 10 ) ) { continue; } if ( ! file_exists( ABSPATH . $file ) ) { continue; } if ( ! file_exists( $working_dir_local . $file ) ) { continue; } if ( '.' === dirname( $file ) && in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ) ) ) { continue; } if ( md5_file( ABSPATH . $file ) === $checksum ) { $skip[] = $file; } else { $check_is_writable[ $file ] = ABSPATH . $file; } } } } // If we're using the direct method, we can predict write failures that are due to permissions. if ( $check_is_writable && 'direct' === $wp_filesystem->method ) { $files_writable = array_filter( $check_is_writable, array( $wp_filesystem, 'is_writable' ) ); if ( $files_writable !== $check_is_writable ) { $files_not_writable = array_diff_key( $check_is_writable, $files_writable ); foreach ( $files_not_writable as $relative_file_not_writable => $file_not_writable ) { // If the writable check failed, chmod file to 0644 and try again, same as copy_dir(). $wp_filesystem->chmod( $file_not_writable, FS_CHMOD_FILE ); if ( $wp_filesystem->is_writable( $file_not_writable ) ) { unset( $files_not_writable[ $relative_file_not_writable ] ); } } // Store package-relative paths (the key) of non-writable files in the WP_Error object. $error_data = version_compare( $old_wp_version, '3.7-beta2', '>' ) ? array_keys( $files_not_writable ) : ''; if ( $files_not_writable ) { return new WP_Error( 'files_not_writable', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), implode( ', ', $error_data ) ); } } } /** This filter is documented in site-admin/includes/update-core.php */ apply_filters( 'update_feedback', __( 'Enabling Maintenance mode…' ) ); // 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 ); /** This filter is documented in site-admin/includes/update-core.php */ apply_filters( 'update_feedback', __( 'Copying the required files…' ) ); // Copy new versions of WP files into place. $result = _copy_dir( $from . $distro, $to, $skip ); if ( is_wp_error( $result ) ) { $result = new WP_Error( $result->get_error_code(), $result->get_error_message(), substr( $result->get_error_data(), strlen( $to ) ) ); } // Since we know the core files have copied over, we can now copy the version file if ( ! is_wp_error( $result ) ) { if ( ! $wp_filesystem->copy( $from . $distro . 'site-inc/version.php', $to . 'site-inc/version.php', true /* overwrite */ ) ) { $wp_filesystem->delete( $from, true ); $result = new WP_Error( 'copy_failed_for_version_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'site-inc/version.php' ); } $wp_filesystem->chmod( $to . 'site-inc/version.php', FS_CHMOD_FILE ); } // Check to make sure everything copied correctly, ignoring the contents of wp-content $skip = array( 'wp-content' ); $failed = array(); if ( isset( $checksums ) && is_array( $checksums ) ) { foreach ( $checksums as $file => $checksum ) { if ( 'wp-content' == substr( $file, 0, 10 ) ) { continue; } if ( ! file_exists( $working_dir_local . $file ) ) { continue; } if ( '.' === dirname( $file ) && in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ) ) ) { $skip[] = $file; continue; } if ( file_exists( ABSPATH . $file ) && md5_file( ABSPATH . $file ) == $checksum ) { $skip[] = $file; } else { $failed[] = $file; } } } // Some files didn't copy properly if ( ! empty( $failed ) ) { $total_size = 0; foreach ( $failed as $file ) { if ( file_exists( $working_dir_local . $file ) ) { $total_size += filesize( $working_dir_local . $file ); } } // If we don't have enough free space, it isn't worth trying again. // Unlikely to be hit due to the check in unzip_file(). $available_space = @disk_free_space( ABSPATH ); if ( $available_space && $total_size >= $available_space ) { $result = new WP_Error( 'disk_full', __( 'There is not enough free disk space to complete the update.' ) ); } else { $result = _copy_dir( $from . $distro, $to, $skip ); if ( is_wp_error( $result ) ) { $result = new WP_Error( $result->get_error_code() . '_retry', $result->get_error_message(), substr( $result->get_error_data(), strlen( $to ) ) ); } } } // Custom Content Directory needs updating now. // Copy Languages if ( ! is_wp_error( $result ) && $wp_filesystem->is_dir( $from . $distro . 'wp-content/languages' ) ) { if ( WP_LANG_DIR != ABSPATH . WPINC . '/languages' || @is_dir( WP_LANG_DIR ) ) { $lang_dir = WP_LANG_DIR; } else { $lang_dir = WP_CONTENT_DIR . '/languages'; } if ( ! @is_dir( $lang_dir ) && 0 === strpos( $lang_dir, ABSPATH ) ) { // Check the language directory exists first $wp_filesystem->mkdir( $to . str_replace( ABSPATH, '', $lang_dir ), FS_CHMOD_DIR ); // If it's within the ABSPATH we can handle it here, otherwise they're out of luck. clearstatcache(); // for FTP, Need to clear the stat cache } if ( @is_dir( $lang_dir ) ) { $wp_lang_dir = $wp_filesystem->find_folder( $lang_dir ); if ( $wp_lang_dir ) { $result = copy_dir( $from . $distro . 'wp-content/languages/', $wp_lang_dir ); if ( is_wp_error( $result ) ) { $result = new WP_Error( $result->get_error_code() . '_languages', $result->get_error_message(), substr( $result->get_error_data(), strlen( $wp_lang_dir ) ) ); } } } } /** This filter is documented in site-admin/includes/update-core.php */ apply_filters( 'update_feedback', __( 'Disabling Maintenance mode…' ) ); // Remove maintenance file, we're done with potential site-breaking changes $wp_filesystem->delete( $maintenance_file ); // 3.5 -> 3.5+ - an empty twentytwelve directory was created upon upgrade to 3.5 for some users, preventing installation of Twenty Twelve. if ( '3.5' == $old_wp_version ) { if ( is_dir( WP_CONTENT_DIR . '/themes/twentytwelve' ) && ! file_exists( WP_CONTENT_DIR . '/themes/twentytwelve/style.css' ) ) { $wp_filesystem->delete( $wp_filesystem->wp_themes_dir() . 'twentytwelve/' ); } } // Copy New bundled plugins & themes // This gives us the ability to install new plugins & themes bundled with future versions of WordPress whilst avoiding the re-install upon upgrade issue. // $development_build controls us overwriting bundled themes and plugins when a non-stable release is being updated if ( ! is_wp_error( $result ) && ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) { foreach ( (array) $_new_bundled_files as $file => $introduced_version ) { // If a $development_build or if $introduced version is greater than what the site was previously running if ( $development_build || version_compare( $introduced_version, $old_wp_version, '>' ) ) { $directory = ( '/' == $file[ strlen( $file ) - 1 ] ); list($type, $filename) = explode( '/', $file, 2 ); // Check to see if the bundled items exist before attempting to copy them if ( ! $wp_filesystem->exists( $from . $distro . 'wp-content/' . $file ) ) { continue; } if ( 'plugins' == $type ) { $dest = $wp_filesystem->wp_plugins_dir(); } elseif ( 'themes' == $type ) { $dest = trailingslashit( $wp_filesystem->wp_themes_dir() ); // Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2 } else { continue; } if ( ! $directory ) { if ( ! $development_build && $wp_filesystem->exists( $dest . $filename ) ) { continue; } if ( ! $wp_filesystem->copy( $from . $distro . 'wp-content/' . $file, $dest . $filename, FS_CHMOD_FILE ) ) { $result = new WP_Error( "copy_failed_for_new_bundled_$type", __( 'Could not copy file.' ), $dest . $filename ); } } else { if ( ! $development_build && $wp_filesystem->is_dir( $dest . $filename ) ) { continue; } $wp_filesystem->mkdir( $dest . $filename, FS_CHMOD_DIR ); $_result = copy_dir( $from . $distro . 'wp-content/' . $file, $dest . $filename ); // If a error occurs partway through this final step, keep the error flowing through, but keep process going. if ( is_wp_error( $_result ) ) { if ( ! is_wp_error( $result ) ) { $result = new WP_Error; } $result->add( $_result->get_error_code() . "_$type", $_result->get_error_message(), substr( $_result->get_error_data(), strlen( $dest ) ) ); } } } } //end foreach } // Handle $result error from the above blocks if ( is_wp_error( $result ) ) { $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; } // If the file isn't deleted, try writing an empty string to the file instead. if ( ! $wp_filesystem->delete( $old_file, true ) && $wp_filesystem->is_file( $old_file ) ) { $wp_filesystem->put_contents( $old_file, '' ); } } // Remove any Genericons example.html's from the filesystem _upgrade_422_remove_genericons(); // Remove the REST API plugin if its version is Beta 4 or lower _upgrade_440_force_deactivate_incompatible_plugins(); // Upgrade DB with separate request /** This filter is documented in site-admin/includes/update-core.php */ 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 ) ); // Clear the cache to prevent an update_option() from saving a stale db_version to the cache wp_cache_flush(); // (Not all cache back ends listen to 'flush') wp_cache_delete( 'alloptions', 'options' ); // 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' ); } /** * Fires after WordPress core has been successfully updated. * * @since 3.3.0 * * @param string $wp_version The current WordPress version. */ do_action( '_core_updated_successfully', $wp_version ); // Clear the option that blocks auto updates after failures, now that we've been successful. if ( function_exists( 'delete_site_option' ) ) { delete_site_option( 'auto_core_update_failed' ); } return $wp_version; } /** * Copies a directory from one location to another via the WordPress Filesystem Abstraction. * Assumes that WP_Filesystem() has already been called and setup. * * This is a temporary function for the 3.1 -> 3.2 upgrade, as well as for those upgrading to * 3.7+ * * @ignore * @since 3.2.0 * @since 3.7.0 Updated not to use a regular expression for the skip list * @see copy_dir() * * @global WP_Filesystem_Base $wp_filesystem * * @param string $from source directory * @param string $to destination directory * @param array $skip_list a list of files/folders to skip copying * @return mixed WP_Error on failure, True on success. */ function _copy_dir( $from, $to, $skip_list = array() ) { global $wp_filesystem; $dirlist = $wp_filesystem->dirlist( $from ); $from = trailingslashit( $from ); $to = trailingslashit( $to ); foreach ( (array) $dirlist as $filename => $fileinfo ) { if ( in_array( $filename, $skip_list ) ) { continue; } if ( 'f' == $fileinfo['type'] ) { if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { // If copy failed, chmod file to 0644 and try again. $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE ); if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { return new WP_Error( 'copy_failed__copy_dir', __( 'Could not copy file.' ), $to . $filename ); } } } elseif ( 'd' == $fileinfo['type'] ) { if ( ! $wp_filesystem->is_dir( $to . $filename ) ) { if ( ! $wp_filesystem->mkdir( $to . $filename, FS_CHMOD_DIR ) ) { return new WP_Error( 'mkdir_failed__copy_dir', __( 'Could not create directory.' ), $to . $filename ); } } /* * Generate the $sub_skip_list for the subdirectory as a sub-set * of the existing $skip_list. */ $sub_skip_list = array(); foreach ( $skip_list as $skip_item ) { if ( 0 === strpos( $skip_item, $filename . '/' ) ) { $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item ); } } $result = _copy_dir( $from . $filename, $to . $filename, $sub_skip_list ); if ( is_wp_error( $result ) ) { return $result; } } } return true; } /** * Redirect to the About WordPress page after a successful upgrade. * * This function is only needed when the existing installation is older than 3.4.0. * * @since 3.3.0 * * @global string $wp_version * @global string $pagenow * @global string $action * * @param string $new_version */ function _redirect_to_about_wordpress( $new_version ) { global $wp_version, $pagenow, $action; if ( version_compare( $wp_version, '3.4-RC1', '>=' ) ) { return; } // Ensure we only run this on the update-core.php page. The Core_Upgrader may be used in other contexts. if ( 'update-core.php' != $pagenow ) { return; } if ( 'do-core-upgrade' != $action && 'do-core-reinstall' != $action ) { return; } // Load the updated default text localization domain for new strings. load_default_textdomain(); // See do_core_upgrade() show_message( __( 'WordPress updated successfully' ) ); // self_admin_url() won't exist when upgrading from <= 3.0, so relative URLs are intentional. show_message( '<span class="hide-if-no-js">' . sprintf( __( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%2$s">here</a>.' ), $new_version, 'about.php?updated' ) . '</span>' ); show_message( '<span class="hide-if-js">' . sprintf( __( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ), $new_version, 'about.php?updated' ) . '</span>' ); echo '</div>'; ?> <script type="text/javascript"> window.location = 'about.php?updated'; </script> <?php // Include admin-footer.php and exit. include( ABSPATH . 'site-admin/admin-footer.php' ); exit(); } /** * Cleans up Genericons example files. * * @since 4.2.2 * * @global array $wp_theme_directories * @global WP_Filesystem_Base $wp_filesystem */ function _upgrade_422_remove_genericons() { global $wp_theme_directories, $wp_filesystem; // A list of the affected files using the filesystem absolute paths. $affected_files = array(); // Themes foreach ( $wp_theme_directories as $directory ) { $affected_theme_files = _upgrade_422_find_genericons_files_in_folder( $directory ); $affected_files = array_merge( $affected_files, $affected_theme_files ); } // Plugins $affected_plugin_files = _upgrade_422_find_genericons_files_in_folder( WP_PLUGIN_DIR ); $affected_files = array_merge( $affected_files, $affected_plugin_files ); foreach ( $affected_files as $file ) { $gen_dir = $wp_filesystem->find_folder( trailingslashit( dirname( $file ) ) ); if ( empty( $gen_dir ) ) { continue; } // The path when the file is accessed via WP_Filesystem may differ in the case of FTP $remote_file = $gen_dir . basename( $file ); if ( ! $wp_filesystem->exists( $remote_file ) ) { continue; } if ( ! $wp_filesystem->delete( $remote_file, false, 'f' ) ) { $wp_filesystem->put_contents( $remote_file, '' ); } } } /** * Recursively find Genericons example files in a given folder. * * @ignore * @since 4.2.2 * * @param string $directory Directory path. Expects trailingslashed. * @return array */ function _upgrade_422_find_genericons_files_in_folder( $directory ) { $directory = trailingslashit( $directory ); $files = array(); if ( file_exists( "{$directory}example.html" ) && false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' ) ) { $files[] = "{$directory}example.html"; } $dirs = glob( $directory . '*', GLOB_ONLYDIR ); if ( $dirs ) { foreach ( $dirs as $dir ) { $files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) ); } } return $files; } /** * @ignore * @since 4.4.0 */ function _upgrade_440_force_deactivate_incompatible_plugins() { if ( defined( 'REST_API_VERSION' ) && version_compare( REST_API_VERSION, '2.0-beta4', '<=' ) ) { deactivate_plugins( array( 'rest-api/plugin.php' ), true ); } }
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