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< ? php
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/**
* WordPress core upgrade functionality .
*
* @ package WordPress
* @ subpackage Administration
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* @ since 2.7 . 0
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*/
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/**
* Stores files to be deleted .
*
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* @ since 2.7 . 0
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* @ global array $_old_files
* @ var array
* @ name $_old_files
*/
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global $_old_files ;
$_old_files = array (
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// 2.0
'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' ,
// 2.0.8
'wp-includes/js/tinymce/plugins/inlinepopups/readme.txt' ,
// 2.1
'wp-admin/edit-form-ajax-cat.php' ,
'wp-admin/execute-pings.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/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' ,
// 2.2
'wp-admin/cat-js.php' ,
'wp-admin/import/b2.php' ,
'wp-includes/js/autosave-js.php' ,
'wp-includes/js/list-manipulation-js.php' ,
'wp-includes/js/wp-ajax-js.php' ,
// 2.3
'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' ,
// 2.5
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'wp-admin/css/upload.css' ,
'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/includes/upload.php' ,
'wp-admin/js/dbx-admin-key.js' ,
'wp-admin/js/link-cat.js' ,
'wp-admin/profile-update.php' ,
'wp-admin/templates.php' ,
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'wp-includes/images/wlw/WpComments.png' ,
'wp-includes/images/wlw/WpIcon.png' ,
'wp-includes/images/wlw/WpWatermark.png' ,
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'wp-includes/js/dbx.js' ,
'wp-includes/js/fat.js' ,
'wp-includes/js/list-manipulation.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/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' ,
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// 2.5.1
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'wp-includes/js/tinymce/tiny_mce_gzip.php' ,
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// 2.6
'wp-admin/bookmarklet.php' ,
'wp-includes/js/jquery/jquery.dimensions.min.js' ,
'wp-includes/js/tinymce/plugins/wordpress/popups.css' ,
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'wp-includes/js/wp-ajax.js' ,
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// 2.7
'wp-admin/css/press-this-ie-rtl.css' ,
'wp-admin/css/press-this-ie.css' ,
'wp-admin/css/upload-rtl.css' ,
'wp-admin/edit-form.php' ,
'wp-admin/images/comment-pill.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/del.png' ,
'wp-admin/images/gear.png' ,
'wp-admin/images/media-button-gallery.gif' ,
'wp-admin/images/media-buttons.gif' ,
'wp-admin/images/postbox-bg.gif' ,
'wp-admin/images/tab.png' ,
'wp-admin/images/tail.gif' ,
'wp-admin/js/forms.js' ,
'wp-admin/js/upload.js' ,
'wp-admin/link-import.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/tinymce/tiny_mce_config.php' ,
'wp-includes/js/tinymce/tiny_mce_ext.js' ,
// 2.8
'wp-admin/js/users.js' ,
'wp-includes/js/swfupload/plugins/swfupload.documentready.js' ,
'wp-includes/js/swfupload/plugins/swfupload.graceful_degradation.js' ,
'wp-includes/js/swfupload/swfupload_f9.swf' ,
'wp-includes/js/tinymce/plugins/autosave' ,
'wp-includes/js/tinymce/plugins/paste/css' ,
'wp-includes/js/tinymce/utils/mclayer.js' ,
'wp-includes/js/tinymce/wordpress.css' ,
// 2.8.5
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'wp-admin/import/btt.php' ,
'wp-admin/import/jkw.php' ,
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// 2.9
'wp-admin/js/page.dev.js' ,
'wp-admin/js/page.js' ,
'wp-admin/js/set-post-thumbnail-handler.dev.js' ,
'wp-admin/js/set-post-thumbnail-handler.js' ,
'wp-admin/js/slug.dev.js' ,
'wp-admin/js/slug.js' ,
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'wp-includes/gettext.php' ,
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'wp-includes/js/tinymce/plugins/wordpress/js' ,
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'wp-includes/streams.php' ,
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// MU
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'README.txt' ,
'htaccess.dist' ,
'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' ,
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'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' ,
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'wp-includes/images/wordpress-mu.png' ,
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'wp-includes/wpmu-default-filters.php' ,
'wp-includes/wpmu-functions.php' ,
'wpmu-settings.php' ,
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// 3.0
'wp-admin/categories.php' ,
'wp-admin/edit-category-form.php' ,
'wp-admin/edit-page-form.php' ,
'wp-admin/edit-pages.php' ,
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'wp-admin/images/admin-header-footer.png' ,
'wp-admin/images/browse-happy.gif' ,
'wp-admin/images/ico-add.png' ,
'wp-admin/images/ico-close.png' ,
'wp-admin/images/ico-edit.png' ,
'wp-admin/images/ico-viewpage.png' ,
'wp-admin/images/fav-top.png' ,
'wp-admin/images/screen-options-left.gif' ,
'wp-admin/images/wp-logo-vs.gif' ,
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'wp-admin/images/wp-logo.gif' ,
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'wp-admin/import' ,
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'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' ,
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'wp-includes/js/codepress' ,
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'wp-includes/js/codepress/engines/khtml.js' ,
'wp-includes/js/codepress/engines/older.js' ,
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'wp-includes/js/jquery/autocomplete.dev.js' ,
'wp-includes/js/jquery/autocomplete.js' ,
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'wp-includes/js/jquery/interface.js' ,
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'wp-includes/js/scriptaculous/prototype.js' ,
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'wp-includes/js/tinymce/wp-tinymce.js' ,
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// 3.1
'wp-admin/edit-attachment-rows.php' ,
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'wp-admin/edit-link-categories.php' ,
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'wp-admin/edit-link-category-form.php' ,
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'wp-admin/edit-post-rows.php' ,
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'wp-admin/images/button-grad-active-vs.png' ,
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'wp-admin/images/button-grad-vs.png' ,
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'wp-admin/images/fav-arrow-vs-rtl.gif' ,
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'wp-admin/images/fav-arrow-vs.gif' ,
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'wp-admin/images/fav-top-vs.gif' ,
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'wp-admin/images/list-vs.png' ,
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'wp-admin/images/screen-options-right-up.gif' ,
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'wp-admin/images/screen-options-right.gif' ,
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'wp-admin/images/visit-site-button-grad-vs.gif' ,
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'wp-admin/images/visit-site-button-grad.gif' ,
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'wp-admin/link-category.php' ,
'wp-admin/sidebar.php' ,
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'wp-includes/classes.php' ,
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'wp-includes/js/tinymce/blank.htm' ,
'wp-includes/js/tinymce/plugins/media/css/content.css' ,
'wp-includes/js/tinymce/plugins/media/img' ,
'wp-includes/js/tinymce/plugins/safari' ,
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// 3.2
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'wp-admin/images/logo-login.gif' ,
'wp-admin/images/star.gif' ,
'wp-admin/js/list-table.dev.js' ,
'wp-admin/js/list-table.js' ,
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'wp-includes/default-embeds.php' ,
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'wp-includes/js/tinymce/plugins/wordpress/img/help.gif' ,
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'wp-includes/js/tinymce/plugins/wordpress/img/more.gif' ,
'wp-includes/js/tinymce/plugins/wordpress/img/toolbars.gif' ,
'wp-includes/js/tinymce/themes/advanced/img/fm.gif' ,
'wp-includes/js/tinymce/themes/advanced/img/sflogo.png' ,
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// 3.3
'wp-admin/css/colors-classic-rtl.css' ,
'wp-admin/css/colors-classic-rtl.dev.css' ,
'wp-admin/css/colors-fresh-rtl.css' ,
'wp-admin/css/colors-fresh-rtl.dev.css' ,
'wp-admin/css/dashboard-rtl.css' ,
'wp-admin/css/dashboard-rtl.dev.css' ,
'wp-admin/css/dashboard.css' ,
'wp-admin/css/dashboard.dev.css' ,
'wp-admin/css/farbtastic-rtl.css' ,
'wp-admin/css/global-rtl.css' ,
'wp-admin/css/global-rtl.dev.css' ,
'wp-admin/css/global.css' ,
'wp-admin/css/global.dev.css' ,
'wp-admin/css/install-rtl.css' ,
'wp-admin/css/install-rtl.dev.css' ,
'wp-admin/css/login-rtl.css' ,
'wp-admin/css/login-rtl.dev.css' ,
'wp-admin/css/login.css' ,
'wp-admin/css/login.dev.css' ,
'wp-admin/css/ms.css' ,
'wp-admin/css/ms.dev.css' ,
'wp-admin/css/nav-menu-rtl.css' ,
'wp-admin/css/nav-menu-rtl.dev.css' ,
'wp-admin/css/nav-menu.css' ,
'wp-admin/css/nav-menu.dev.css' ,
'wp-admin/css/plugin-install-rtl.css' ,
'wp-admin/css/plugin-install-rtl.dev.css' ,
'wp-admin/css/plugin-install.css' ,
'wp-admin/css/plugin-install.dev.css' ,
'wp-admin/css/press-this-rtl.css' ,
'wp-admin/css/press-this-rtl.dev.css' ,
'wp-admin/css/press-this.css' ,
'wp-admin/css/press-this.dev.css' ,
'wp-admin/css/theme-editor-rtl.css' ,
'wp-admin/css/theme-editor-rtl.dev.css' ,
'wp-admin/css/theme-editor.css' ,
'wp-admin/css/theme-editor.dev.css' ,
'wp-admin/css/theme-install-rtl.css' ,
'wp-admin/css/theme-install-rtl.dev.css' ,
'wp-admin/css/theme-install.css' ,
'wp-admin/css/theme-install.dev.css' ,
'wp-admin/css/widgets-rtl.css' ,
'wp-admin/css/widgets-rtl.dev.css' ,
'wp-admin/css/widgets.css' ,
'wp-admin/css/widgets.dev.css' ,
'wp-admin/includes/internal-linking.php' ,
'wp-includes/images/admin-bar-sprite-rtl.png' ,
'wp-includes/js/jquery/ui.button.js' ,
'wp-includes/js/jquery/ui.core.js' ,
'wp-includes/js/jquery/ui.dialog.js' ,
'wp-includes/js/jquery/ui.draggable.js' ,
'wp-includes/js/jquery/ui.droppable.js' ,
'wp-includes/js/jquery/ui.mouse.js' ,
'wp-includes/js/jquery/ui.position.js' ,
'wp-includes/js/jquery/ui.resizable.js' ,
'wp-includes/js/jquery/ui.selectable.js' ,
'wp-includes/js/jquery/ui.sortable.js' ,
'wp-includes/js/jquery/ui.tabs.js' ,
'wp-includes/js/jquery/ui.widget.js' ,
'wp-includes/js/l10n.dev.js' ,
'wp-includes/js/l10n.js' ,
'wp-includes/js/tinymce/plugins/wplink/css' ,
'wp-includes/js/tinymce/plugins/wplink/img' ,
'wp-includes/js/tinymce/plugins/wplink/js' ,
'wp-includes/js/tinymce/themes/advanced/img/wpicons.png' ,
'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/butt2.png' ,
'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/button_bg.png' ,
'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/down_arrow.gif' ,
'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/fade-butt.png' ,
'wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/separator.gif' ,
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// 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',
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// 3.4
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'wp-admin/images/gray-star.png' ,
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'wp-admin/images/logo-login.png' ,
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'wp-admin/images/star.png' ,
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'wp-admin/index-extra.php' ,
'wp-admin/network/index-extra.php' ,
'wp-admin/user/index-extra.php' ,
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'wp-admin/images/screenshots/admin-flyouts.png' ,
'wp-admin/images/screenshots/coediting.png' ,
'wp-admin/images/screenshots/drag-and-drop.png' ,
'wp-admin/images/screenshots/help-screen.png' ,
'wp-admin/images/screenshots/media-icon.png' ,
'wp-admin/images/screenshots/new-feature-pointer.png' ,
'wp-admin/images/screenshots/welcome-screen.png' ,
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'wp-includes/css/editor-buttons.css' ,
'wp-includes/css/editor-buttons.dev.css' ,
'wp-includes/js/tinymce/plugins/paste/blank.htm' ,
'wp-includes/js/tinymce/plugins/wordpress/css' ,
'wp-includes/js/tinymce/plugins/wordpress/editor_plugin.dev.js' ,
'wp-includes/js/tinymce/plugins/wordpress/img/embedded.png' ,
'wp-includes/js/tinymce/plugins/wordpress/img/more_bug.gif' ,
'wp-includes/js/tinymce/plugins/wordpress/img/page_bug.gif' ,
'wp-includes/js/tinymce/plugins/wpdialogs/editor_plugin.dev.js' ,
'wp-includes/js/tinymce/plugins/wpeditimage/css/editimage-rtl.css' ,
'wp-includes/js/tinymce/plugins/wpeditimage/editor_plugin.dev.js' ,
'wp-includes/js/tinymce/plugins/wpfullscreen/editor_plugin.dev.js' ,
'wp-includes/js/tinymce/plugins/wpgallery/editor_plugin.dev.js' ,
'wp-includes/js/tinymce/plugins/wpgallery/img/gallery.png' ,
'wp-includes/js/tinymce/plugins/wplink/editor_plugin.dev.js' ,
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// Don't delete, yet: 'wp-pass.php',
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// Don't delete, yet: 'wp-register.php',
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// 3.5
'wp-admin/gears-manifest.php' ,
'wp-admin/includes/manifest.php' ,
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);
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/**
* 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
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* re - installed in future upgrades , this behaviour is controlled by the
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* introduced version present here being older than the current installed version .
*
* The content of this array should follow the following format :
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* Filename ( relative to wp - content ) => Introduced version
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* Directories should be noted by suffixing it with a trailing slash ( / )
*
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* @ since 3.2 . 0
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* @ global array $_new_bundled_files
* @ var array
* @ name $_new_bundled_files
*/
global $_new_bundled_files ;
$_new_bundled_files = array (
'plugins/akismet/' => '2.0' ,
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'themes/twentyten/' => '3.0' ,
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'themes/twentyeleven/' => '3.2'
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);
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/**
* 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 .
*
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* The files in the { @ link $_new_bundled_files } list will be added to the installation
* if the version is greater than or equal to the old version being upgraded .
*
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* 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 .
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* 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
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* 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 .
*
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* @ since 2.7 . 0
*
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* @ 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 .
*/
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function update_core ( $from , $to ) {
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global $wp_filesystem , $_old_files , $_new_bundled_files , $wpdb ;
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@ set_time_limit ( 300 );
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$php_version = phpversion ();
$mysql_version = $wpdb -> db_version ();
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$required_php_version = '5.2.4' ;
$required_mysql_version = '5.0' ;
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$wp_version = '3.4' ;
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$php_compat = version_compare ( $php_version , $required_php_version , '>=' );
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if ( file_exists ( WP_CONTENT_DIR . '/db.php' ) && empty ( $wpdb -> is_mysql ) )
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$mysql_compat = true ;
else
$mysql_compat = version_compare ( $mysql_version , $required_mysql_version , '>=' );
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if ( ! $mysql_compat || ! $php_compat )
$wp_filesystem -> delete ( $from , true );
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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 , $mysql_version ) );
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// Sanity check the unzipped distribution
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apply_filters ( 'update_feedback' , __ ( 'Verifying the unpacked files…' ));
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$distro = '' ;
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$roots = array ( '/wordpress/' , '/wordpress-mu/' );
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foreach ( $roots as $root ) {
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if ( $wp_filesystem -> exists ( $from . $root . 'readme.html' ) && $wp_filesystem -> exists ( $from . $root . 'wp-includes/version.php' ) ) {
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$distro = $root ;
break ;
}
}
if ( ! $distro ) {
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$wp_filesystem -> delete ( $from , true );
return new WP_Error ( 'insane_distro' , __ ( 'The update could not be unpacked' ) );
}
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apply_filters ( 'update_feedback' , __ ( 'Installing the latest version…' ));
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// Create maintenance file to signal that we are upgrading
$maintenance_string = '<?php $upgrading = ' . time () . '; ?>' ;
$maintenance_file = $to . '.maintenance' ;
$wp_filesystem -> delete ( $maintenance_file );
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$wp_filesystem -> put_contents ( $maintenance_file , $maintenance_string , FS_CHMOD_FILE );
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// Copy new versions of WP files into place.
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$result = _copy_dir ( $from . $distro , $to , array ( 'wp-content' ) );
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// Custom Content Directory needs updating now.
// Copy Languages
if ( ! is_wp_error ( $result ) && $wp_filesystem -> is_dir ( $from . $distro . 'wp-content/languages' ) ) {
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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 ( $lang_dir , ABSPATH ) ) { // Check the language directory exists first
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$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.
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clearstatcache (); // for FTP, Need to clear the stat cache
}
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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 );
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}
}
// 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.
if ( ! is_wp_error ( $result ) && ( ! defined ( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) {
$old_version = $GLOBALS [ 'wp_version' ]; // $wp_version in local scope == new version
foreach ( ( array ) $_new_bundled_files as $file => $introduced_version ) {
// If $introduced version is greater than what the site was previously running
if ( version_compare ( $introduced_version , $old_version , '>' ) ) {
$directory = ( '/' == $file [ strlen ( $file ) - 1 ]);
list ( $type , $filename ) = explode ( '/' , $file , 2 );
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if ( 'plugins' == $type )
$dest = $wp_filesystem -> wp_plugins_dir ();
elseif ( 'themes' == $type )
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$dest = trailingslashit ( $wp_filesystem -> wp_themes_dir ()); // Back-compat, ::wp_themes_dir() did not return trailingslash'd pre-3.2
else
continue ;
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if ( ! $directory ) {
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if ( $wp_filesystem -> exists ( $dest . $filename ) )
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continue ;
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if ( ! $wp_filesystem -> copy ( $from . $distro . 'wp-content/' . $file , $dest . $filename , FS_CHMOD_FILE ) )
$result = new WP_Error ( 'copy_failed' , __ ( 'Could not copy file.' ), $dest . $filename );
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} else {
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if ( $wp_filesystem -> is_dir ( $dest . $filename ) )
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continue ;
$wp_filesystem -> mkdir ( $dest . $filename , FS_CHMOD_DIR );
$_result = copy_dir ( $from . $distro . 'wp-content/' . $file , $dest . $filename );
if ( is_wp_error ( $_result ) ) //If a error occurs partway through this final step, keep the error flowing through, but keep process going.
$result = $_result ;
}
}
} //end foreach
}
// Handle $result error from the above blocks
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if ( is_wp_error ( $result ) ) {
$wp_filesystem -> delete ( $maintenance_file );
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$wp_filesystem -> delete ( $from , true );
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return $result ;
}
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// Remove old files
foreach ( $_old_files as $old_file ) {
$old_file = $to . $old_file ;
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if ( ! $wp_filesystem -> exists ( $old_file ) )
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continue ;
$wp_filesystem -> delete ( $old_file , true );
}
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// Upgrade DB with separate request
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apply_filters ( 'update_feedback' , __ ( 'Upgrading database…' ));
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$db_upgrade_url = admin_url ( 'upgrade.php?step=upgrade_db' );
wp_remote_post ( $db_upgrade_url , array ( 'timeout' => 60 ));
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// Remove working directory
$wp_filesystem -> delete ( $from , true );
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// Force refresh of update information
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if ( function_exists ( 'delete_site_transient' ) )
delete_site_transient ( 'update_core' );
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else
delete_option ( 'update_core' );
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// Remove maintenance file, we're done.
$wp_filesystem -> delete ( $maintenance_file );
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// If we made it this far:
do_action ( '_core_updated_successfully' , $wp_version );
return $wp_version ;
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}
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/**
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* 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 only and will be removed in 3.3
*
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* @ ignore
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* @ since 3.2 . 0
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* @ see copy_dir ()
*
* @ 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 );
$skip_regex = '' ;
foreach ( ( array ) $skip_list as $key => $skip_file )
$skip_regex .= preg_quote ( $skip_file , '!' ) . '|' ;
if ( ! empty ( $skip_regex ) )
$skip_regex = '!(' . rtrim ( $skip_regex , '|' ) . ')$!i' ;
foreach ( ( array ) $dirlist as $filename => $fileinfo ) {
if ( ! empty ( $skip_regex ) )
if ( preg_match ( $skip_regex , $from . $filename ) )
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 , 0644 );
if ( ! $wp_filesystem -> copy ( $from . $filename , $to . $filename , true , FS_CHMOD_FILE ) )
return new WP_Error ( 'copy_failed' , __ ( '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' , __ ( 'Could not create directory.' ), $to . $filename );
}
$result = _copy_dir ( $from . $filename , $to . $filename , $skip_list );
if ( is_wp_error ( $result ) )
return $result ;
}
}
return true ;
}
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/**
* Redirect to the About WordPress page after a successful upgrade .
*
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* This function is only needed when the existing install is older than 3.4 . 0.
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*
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* @ since 3.3 . 0
*
*/
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function _redirect_to_about_wordpress ( $new_version ) {
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global $wp_version , $pagenow , $action ;
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if ( version_compare ( $wp_version , '3.4-RC1' , '>=' ) )
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return ;
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// Ensure we only run this on the update-core.php page. wp_update_core() could be called in other contexts.
if ( 'update-core.php' != $pagenow )
return ;
if ( 'do-core-upgrade' != $action && 'do-core-reinstall' != $action )
return ;
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// Load the updated default text localization domain for new strings
load_default_textdomain ();
// See do_core_upgrade()
show_message ( __ ( 'WordPress updated successfully' ) );
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show_message ( '<span class="hide-if-no-js">' . sprintf ( __ ( 'Welcome to WordPress %1$s. You will be redirected to the About WordPress screen. If not, click <a href="%s">here</a>.' ), $new_version , esc_url ( self_admin_url ( 'about.php?updated' ) ) ) . '</span>' );
show_message ( '<span class="hide-if-js">' . sprintf ( __ ( 'Welcome to WordPress %1$s. <a href="%2$s">Learn more</a>.' ), $new_version , esc_url ( self_admin_url ( 'about.php?updated' ) ) ) . '</span>' );
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echo '</div>' ;
?>
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< script type = " text/javascript " >
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window . location = '<?php echo self_admin_url( ' about . php ? updated ' ); ?>' ;
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</ script >
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< ? php
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// Include admin-footer.php and exit
include ( ABSPATH . 'wp-admin/admin-footer.php' );
exit ();
}
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add_action ( '_core_updated_successfully' , '_redirect_to_about_wordpress' );
