header(); $step = empty( $_GET['step'] ) ? 0 : (int) $_GET['step']; switch ( $step ) { case 0: $this->greet(); break; case 1: check_admin_referer( 'import-upload' ); if ( $this->handle_upload() ) $this->import_options(); break; case 2: check_admin_referer( 'import-wordpress' ); $this->fetch_attachments = ( ! empty( $_POST['fetch_attachments'] ) && $this->allow_fetch_attachments() ); $this->id = (int) $_POST['import_id']; $file = get_attached_file( $this->id ); set_time_limit(0); $this->import( $file ); break; } $this->footer(); } /** * The main controller for the actual import stage. * * @param string $file Path to the WXR file for importing */ function import( $file ) { add_filter( 'import_post_meta_key', array( $this, 'is_valid_meta_key' ) ); add_filter( 'http_request_timeout', array( &$this, 'bump_request_timeout' ) ); $this->import_start( $file ); $this->get_author_mapping(); wp_suspend_cache_invalidation( true ); $this->process_categories(); $this->process_tags(); $this->process_terms(); $this->process_posts(); wp_suspend_cache_invalidation( false ); // update incorrect/missing information in the DB $this->backfill_parents(); $this->backfill_attachment_urls(); $this->remap_featured_images(); $this->import_end(); } /** * Parses the WXR file and prepares us for the task of processing parsed data * * @param string $file Path to the WXR file for importing */ function import_start( $file ) { if ( ! is_file($file) ) { echo '

' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '
'; echo __( 'The file does not exist, please try again.', 'wordpress-importer' ) . '

'; $this->footer(); die(); } $import_data = $this->parse( $file ); if ( is_wp_error( $import_data ) ) { echo '

' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '
'; echo esc_html( $import_data->get_error_message() ) . '

'; $this->footer(); die(); } $this->version = $import_data['version']; $this->get_authors_from_import( $import_data ); $this->posts = $import_data['posts']; $this->terms = $import_data['terms']; $this->categories = $import_data['categories']; $this->tags = $import_data['tags']; $this->base_url = esc_url( $import_data['base_url'] ); wp_defer_term_counting( true ); wp_defer_comment_counting( true ); do_action( 'import_start' ); } /** * Performs post-import cleanup of files and the cache */ function import_end() { wp_import_cleanup( $this->id ); wp_cache_flush(); foreach ( get_taxonomies() as $tax ) { delete_option( "{$tax}_children" ); _get_term_hierarchy( $tax ); } wp_defer_term_counting( false ); wp_defer_comment_counting( false ); echo '

' . __( 'All done.', 'wordpress-importer' ) . ' ' . __( 'Have fun!', 'wordpress-importer' ) . '' . '

'; echo '

' . __( 'Remember to update the passwords and roles of imported users.', 'wordpress-importer' ) . '

'; do_action( 'import_end' ); } /** * Handles the WXR upload and initial parsing of the file to prepare for * displaying author import options * * @return bool False if error uploading or invalid file, true otherwise */ function handle_upload() { $file = wp_import_handle_upload(); if ( isset( $file['error'] ) ) { echo '

' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '
'; echo esc_html( $file['error'] ) . '

'; return false; } $this->id = (int) $file['id']; $import_data = $this->parse( $file['file'] ); if ( is_wp_error( $import_data ) ) { echo '

' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '
'; echo esc_html( $import_data->get_error_message() ) . '

'; return false; } $this->version = $import_data['version']; if ( $this->version > $this->max_wxr_version ) { echo '

'; printf( __( 'This WXR file (version %s) may not be supported by this version of the importer. Please consider updating.', 'wordpress-importer' ), esc_html($import_data['version']) ); echo '

'; } $this->get_authors_from_import( $import_data ); return true; } /** * Retrieve authors from parsed WXR data * * Uses the provided author information from WXR 1.1 files * or extracts info from each post for WXR 1.0 files * * @param array $import_data Data returned by a WXR parser */ function get_authors_from_import( $import_data ) { if ( ! empty( $import_data['authors'] ) ) { $this->authors = $import_data['authors']; // no author information, grab it from the posts } else { foreach ( $import_data['posts'] as $post ) { $login = sanitize_user( $post['post_author'], true ); if ( empty( $login ) ) { printf( __( 'Failed to import author %s. Their posts will be attributed to the current user.', 'wordpress-importer' ), esc_html( $post['post_author'] ) ); echo '
'; continue; } if ( ! isset($this->authors[$login]) ) $this->authors[$login] = array( 'author_login' => $login, 'author_display_name' => $post['post_author'] ); } } } /** * Display pre-import options, author importing/mapping and option to * fetch attachments */ function import_options() { $j = 0; ?>
authors ) ) : ?>

admins entries.', 'wordpress-importer' ); ?>

allow_create_users() ) : ?>

    authors as $author ) : ?>
  1. author_select( $j++, $author ); ?>
allow_fetch_attachments() ) : ?>

' . esc_html( $author['author_display_name'] ); if ( $this->version != '1.0' ) echo ' (' . esc_html( $author['author_login'] ) . ')'; echo '
'; if ( $this->version != '1.0' ) echo '
'; $create_users = $this->allow_create_users(); if ( $create_users ) { if ( $this->version != '1.0' ) { _e( 'or create new user with login name:', 'wordpress-importer' ); $value = ''; } else { _e( 'as a new user:', 'wordpress-importer' ); $value = esc_attr( sanitize_user( $author['author_login'], true ) ); } echo '
'; } if ( ! $create_users && $this->version == '1.0' ) _e( 'assign posts to an existing user:', 'wordpress-importer' ); else _e( 'or assign posts to an existing user:', 'wordpress-importer' ); wp_dropdown_users( array( 'name' => "user_map[$n]", 'multi' => true, 'show_option_all' => __( '- Select -', 'wordpress-importer' ) ) ); echo ''; if ( $this->version != '1.0' ) echo '
'; } /** * Map old author logins to local user IDs based on decisions made * in import options form. Can map to an existing user, create a new user * or falls back to the current user in case of error with either of the previous */ function get_author_mapping() { if ( ! isset( $_POST['imported_authors'] ) ) return; $create_users = $this->allow_create_users(); foreach ( (array) $_POST['imported_authors'] as $i => $old_login ) { // Multsite adds strtolower to sanitize_user. Need to sanitize here to stop breakage in process_posts. $santized_old_login = sanitize_user( $old_login, true ); $old_id = isset( $this->authors[$old_login]['author_id'] ) ? intval($this->authors[$old_login]['author_id']) : false; if ( ! empty( $_POST['user_map'][$i] ) ) { $user = get_userdata( intval($_POST['user_map'][$i]) ); if ( isset( $user->ID ) ) { if ( $old_id ) $this->processed_authors[$old_id] = $user->ID; $this->author_mapping[$santized_old_login] = $user->ID; } } else if ( $create_users ) { if ( ! empty($_POST['user_new'][$i]) ) { $user_id = wp_create_user( $_POST['user_new'][$i], wp_generate_password() ); } else if ( $this->version != '1.0' ) { $user_data = array( 'user_login' => $old_login, 'user_pass' => wp_generate_password(), 'user_email' => isset( $this->authors[$old_login]['author_email'] ) ? $this->authors[$old_login]['author_email'] : '', 'display_name' => $this->authors[$old_login]['author_display_name'], 'first_name' => isset( $this->authors[$old_login]['author_first_name'] ) ? $this->authors[$old_login]['author_first_name'] : '', 'last_name' => isset( $this->authors[$old_login]['author_last_name'] ) ? $this->authors[$old_login]['author_last_name'] : '', ); $user_id = wp_insert_user( $user_data ); } if ( ! is_wp_error( $user_id ) ) { if ( $old_id ) $this->processed_authors[$old_id] = $user_id; $this->author_mapping[$santized_old_login] = $user_id; } else { printf( __( 'Failed to create new user for %s. Their posts will be attributed to the current user.', 'wordpress-importer' ), esc_html($this->authors[$old_login]['author_display_name']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ' ' . $user_id->get_error_message(); echo '
'; } } // failsafe: if the user_id was invalid, default to the current user if ( ! isset( $this->author_mapping[$santized_old_login] ) ) { if ( $old_id ) $this->processed_authors[$old_id] = (int) get_current_user_id(); $this->author_mapping[$santized_old_login] = (int) get_current_user_id(); } } } /** * Create new categories based on import information * * Doesn't create a new category if its slug already exists */ function process_categories() { if ( empty( $this->categories ) ) return; foreach ( $this->categories as $cat ) { // if the category already exists leave it alone $term_id = term_exists( $cat['category_nicename'], 'category' ); if ( $term_id ) { if ( is_array($term_id) ) $term_id = $term_id['term_id']; if ( isset($cat['term_id']) ) $this->processed_terms[intval($cat['term_id'])] = (int) $term_id; continue; } $category_parent = empty( $cat['category_parent'] ) ? 0 : category_exists( $cat['category_parent'] ); $category_description = isset( $cat['category_description'] ) ? $cat['category_description'] : ''; $catarr = array( 'category_nicename' => $cat['category_nicename'], 'category_parent' => $category_parent, 'cat_name' => $cat['cat_name'], 'category_description' => $category_description ); $id = wp_insert_category( $catarr ); if ( ! is_wp_error( $id ) ) { if ( isset($cat['term_id']) ) $this->processed_terms[intval($cat['term_id'])] = $id; } else { printf( __( 'Failed to import category %s', 'wordpress-importer' ), esc_html($cat['category_nicename']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ': ' . $id->get_error_message(); echo '
'; continue; } } unset( $this->categories ); } /** * Create new post tags based on import information * * Doesn't create a tag if its slug already exists */ function process_tags() { if ( empty( $this->tags ) ) return; foreach ( $this->tags as $tag ) { // if the tag already exists leave it alone $term_id = term_exists( $tag['tag_slug'], 'post_tag' ); if ( $term_id ) { if ( is_array($term_id) ) $term_id = $term_id['term_id']; if ( isset($tag['term_id']) ) $this->processed_terms[intval($tag['term_id'])] = (int) $term_id; continue; } $tag_desc = isset( $tag['tag_description'] ) ? $tag['tag_description'] : ''; $tagarr = array( 'slug' => $tag['tag_slug'], 'description' => $tag_desc ); $id = wp_insert_term( $tag['tag_name'], 'post_tag', $tagarr ); if ( ! is_wp_error( $id ) ) { if ( isset($tag['term_id']) ) $this->processed_terms[intval($tag['term_id'])] = $id['term_id']; } else { printf( __( 'Failed to import post tag %s', 'wordpress-importer' ), esc_html($tag['tag_name']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ': ' . $id->get_error_message(); echo '
'; continue; } } unset( $this->tags ); } /** * Create new terms based on import information * * Doesn't create a term its slug already exists */ function process_terms() { if ( empty( $this->terms ) ) return; foreach ( $this->terms as $term ) { // if the term already exists in the correct taxonomy leave it alone $term_id = term_exists( $term['slug'], $term['term_taxonomy'] ); if ( $term_id ) { if ( is_array($term_id) ) $term_id = $term_id['term_id']; if ( isset($term['term_id']) ) $this->processed_terms[intval($term['term_id'])] = (int) $term_id; continue; } if ( empty( $term['term_parent'] ) ) { $parent = 0; } else { $parent = term_exists( $term['term_parent'], $term['term_taxonomy'] ); if ( is_array( $parent ) ) $parent = $parent['term_id']; } $description = isset( $term['term_description'] ) ? $term['term_description'] : ''; $termarr = array( 'slug' => $term['slug'], 'description' => $description, 'parent' => intval($parent) ); $id = wp_insert_term( $term['term_name'], $term['term_taxonomy'], $termarr ); if ( ! is_wp_error( $id ) ) { if ( isset($term['term_id']) ) $this->processed_terms[intval($term['term_id'])] = $id['term_id']; } else { printf( __( 'Failed to import %s %s', 'wordpress-importer' ), esc_html($term['term_taxonomy']), esc_html($term['term_name']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ': ' . $id->get_error_message(); echo '
'; continue; } } unset( $this->terms ); } /** * Create new posts based on import information * * Posts marked as having a parent which doesn't exist will become top level items. * Doesn't create a new post if: the post type doesn't exist, the given post ID * is already noted as imported or a post with the same title and date already exists. * Note that new/updated terms, comments and meta are imported for the last of the above. */ function process_posts() { foreach ( $this->posts as $post ) { if ( ! post_type_exists( $post['post_type'] ) ) { printf( __( 'Failed to import “%s”: Invalid post type %s', 'wordpress-importer' ), esc_html($post['post_title']), esc_html($post['post_type']) ); echo '
'; continue; } if ( isset( $this->processed_posts[$post['post_id']] ) && ! empty( $post['post_id'] ) ) continue; if ( $post['status'] == 'auto-draft' ) continue; if ( 'nav_menu_item' == $post['post_type'] ) { $this->process_menu_item( $post ); continue; } $post_type_object = get_post_type_object( $post['post_type'] ); $post_exists = post_exists( $post['post_title'], '', $post['post_date'] ); if ( $post_exists ) { printf( __('%s “%s” already exists.', 'wordpress-importer'), $post_type_object->labels->singular_name, esc_html($post['post_title']) ); echo '
'; $comment_post_ID = $post_id = $post_exists; } else { $post_parent = (int) $post['post_parent']; if ( $post_parent ) { // if we already know the parent, map it to the new local ID if ( isset( $this->processed_posts[$post_parent] ) ) { $post_parent = $this->processed_posts[$post_parent]; // otherwise record the parent for later } else { $this->post_orphans[intval($post['post_id'])] = $post_parent; $post_parent = 0; } } // map the post author $author = sanitize_user( $post['post_author'], true ); if ( isset( $this->author_mapping[$author] ) ) $author = $this->author_mapping[$author]; else $author = (int) get_current_user_id(); $postdata = array( 'import_id' => $post['post_id'], 'post_author' => $author, 'post_date' => $post['post_date'], 'post_date_gmt' => $post['post_date_gmt'], 'post_content' => $post['post_content'], 'post_excerpt' => $post['post_excerpt'], 'post_title' => $post['post_title'], 'post_status' => $post['status'], 'post_name' => $post['post_name'], 'comment_status' => $post['comment_status'], 'ping_status' => $post['ping_status'], 'guid' => $post['guid'], 'post_parent' => $post_parent, 'menu_order' => $post['menu_order'], 'post_type' => $post['post_type'], 'post_password' => $post['post_password'] ); if ( 'attachment' == $postdata['post_type'] ) { $remote_url = ! empty($post['attachment_url']) ? $post['attachment_url'] : $post['guid']; // try to use _wp_attached file for upload folder placement to ensure the same location as the export site // e.g. location is 2003/05/image.jpg but the attachment post_date is 2010/09, see media_handle_upload() $postdata['upload_date'] = $post['post_date']; if ( isset( $post['postmeta'] ) ) { foreach( $post['postmeta'] as $meta ) { if ( $meta['key'] == '_wp_attached_file' ) { if ( preg_match( '%^[0-9]{4}/[0-9]{2}%', $meta['value'], $matches ) ) $postdata['upload_date'] = $matches[0]; break; } } } $comment_post_ID = $post_id = $this->process_attachment( $postdata, $remote_url ); } else { $comment_post_ID = $post_id = wp_insert_post( $postdata, true ); } if ( is_wp_error( $post_id ) ) { printf( __( 'Failed to import %s “%s”', 'wordpress-importer' ), $post_type_object->labels->singular_name, esc_html($post['post_title']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ': ' . $post_id->get_error_message(); echo '
'; continue; } if ( $post['is_sticky'] == 1 ) stick_post( $post_id ); } // map pre-import ID to local ID $this->processed_posts[intval($post['post_id'])] = (int) $post_id; // add categories, tags and other terms if ( ! empty( $post['terms'] ) ) { $terms_to_set = array(); foreach ( $post['terms'] as $term ) { // back compat with WXR 1.0 map 'tag' to 'post_tag' $taxonomy = ( 'tag' == $term['domain'] ) ? 'post_tag' : $term['domain']; $term_exists = term_exists( $term['slug'], $taxonomy ); $term_id = is_array( $term_exists ) ? $term_exists['term_id'] : $term_exists; if ( ! $term_id ) { $t = wp_insert_term( $term['name'], $taxonomy, array( 'slug' => $term['slug'] ) ); if ( ! is_wp_error( $t ) ) { $term_id = $t['term_id']; } else { printf( __( 'Failed to import %s %s', 'wordpress-importer' ), esc_html($taxonomy), esc_html($term['name']) ); if ( defined('IMPORT_DEBUG') && IMPORT_DEBUG ) echo ': ' . $t->get_error_message(); echo '
'; continue; } } $terms_to_set[$taxonomy][] = intval( $term_id ); } foreach ( $terms_to_set as $tax => $ids ) { $tt_ids = wp_set_post_terms( $post_id, $ids, $tax ); } unset( $post['terms'], $terms_to_set ); } // add/update comments if ( ! empty( $post['comments'] ) ) { $num_comments = 0; $inserted_comments = array(); foreach ( $post['comments'] as $comment ) { $comment_id = $comment['comment_id']; $newcomments[$comment_id]['comment_post_ID'] = $comment_post_ID; $newcomments[$comment_id]['comment_author'] = $comment['comment_author']; $newcomments[$comment_id]['comment_author_email'] = $comment['comment_author_email']; $newcomments[$comment_id]['comment_author_IP'] = $comment['comment_author_IP']; $newcomments[$comment_id]['comment_author_url'] = $comment['comment_author_url']; $newcomments[$comment_id]['comment_date'] = $comment['comment_date']; $newcomments[$comment_id]['comment_date_gmt'] = $comment['comment_date_gmt']; $newcomments[$comment_id]['comment_content'] = $comment['comment_content']; $newcomments[$comment_id]['comment_approved'] = $comment['comment_approved']; $newcomments[$comment_id]['comment_type'] = $comment['comment_type']; $newcomments[$comment_id]['comment_parent'] = $comment['comment_parent']; $newcomments[$comment_id]['commentmeta'] = isset( $comment['commentmeta'] ) ? $comment['commentmeta'] : array(); if ( isset( $this->processed_authors[$comment['comment_user_id']] ) ) $newcomments[$comment_id]['user_id'] = $this->processed_authors[$comment['comment_user_id']]; } ksort( $newcomments ); foreach ( $newcomments as $key => $comment ) { // if this is a new post we can skip the comment_exists() check if ( ! $post_exists || ! comment_exists( $comment['comment_author'], $comment['comment_date'] ) ) { if ( isset( $inserted_comments[$comment['comment_parent']] ) ) $comment['comment_parent'] = $inserted_comments[$comment['comment_parent']]; $comment = wp_filter_comment( $comment ); $inserted_comments[$key] = wp_insert_comment( $comment ); foreach( $comment['commentmeta'] as $meta ) { $value = maybe_unserialize( $meta['value'] ); add_comment_meta( $inserted_comments[$key], $meta['key'], $value ); } $num_comments++; } } unset( $newcomments, $inserted_comments, $post['comments'] ); } // add/update post meta if ( isset( $post['postmeta'] ) ) { foreach ( $post['postmeta'] as $meta ) { $key = apply_filters( 'import_post_meta_key', $meta['key'] ); $value = false; if ( '_edit_last' == $key ) { if ( isset( $this->processed_authors[intval($meta['value'])] ) ) $value = $this->processed_authors[intval($meta['value'])]; else $key = false; } if ( $key ) { // export gets meta straight from the DB so could have a serialized string if ( ! $value ) $value = maybe_unserialize( $meta['value'] ); add_post_meta( $post_id, $key, $value ); do_action( 'import_post_meta', $post_id, $key, $value ); // if the post has a featured image, take note of this in case of remap if ( '_thumbnail_id' == $key ) $this->featured_images[$post_id] = (int) $value; } } } } unset( $this->posts ); } /** * Attempt to create a new menu item from import data * * Fails for draft, orphaned menu items and those without an associated nav_menu * or an invalid nav_menu term. If the post type or term object which the menu item * represents doesn't exist then the menu item will not be imported (waits until the * end of the import to retry again before discarding). * * @param array $item Menu item details from WXR file */ function process_menu_item( $item ) { // skip draft, orphaned menu items if ( 'draft' == $item['status'] ) return; $menu_slug = false; if ( isset($item['terms']) ) { // loop through terms, assume first nav_menu term is correct menu foreach ( $item['terms'] as $term ) { if ( 'nav_menu' == $term['domain'] ) { $menu_slug = $term['slug']; break; } } } // no nav_menu term associated with this menu item if ( ! $menu_slug ) { _e( 'Menu item skipped due to missing menu slug', 'wordpress-importer' ); echo '
'; return; } $menu_id = term_exists( $menu_slug, 'nav_menu' ); if ( ! $menu_id ) { printf( __( 'Menu item skipped due to invalid menu slug: %s', 'wordpress-importer' ), esc_html( $menu_slug ) ); echo '
'; return; } else { $menu_id = is_array( $menu_id ) ? $menu_id['term_id'] : $menu_id; } foreach ( $item['postmeta'] as $meta ) $$meta['key'] = $meta['value']; if ( 'taxonomy' == $_menu_item_type && isset( $this->processed_terms[intval($_menu_item_object_id)] ) ) { $_menu_item_object_id = $this->processed_terms[intval($_menu_item_object_id)]; } else if ( 'post_type' == $_menu_item_type && isset( $this->processed_posts[intval($_menu_item_object_id)] ) ) { $_menu_item_object_id = $this->processed_posts[intval($_menu_item_object_id)]; } else if ( 'custom' != $_menu_item_type ) { // associated object is missing or not imported yet, we'll retry later $this->missing_menu_items[] = $item; return; } if ( isset( $this->processed_menu_items[intval($_menu_item_menu_item_parent)] ) ) { $_menu_item_menu_item_parent = $this->processed_menu_items[intval($_menu_item_menu_item_parent)]; } else if ( $_menu_item_menu_item_parent ) { $this->menu_item_orphans[intval($item['post_id'])] = (int) $_menu_item_menu_item_parent; $_menu_item_menu_item_parent = 0; } // wp_update_nav_menu_item expects CSS classes as a space separated string $_menu_item_classes = maybe_unserialize( $_menu_item_classes ); if ( is_array( $_menu_item_classes ) ) $_menu_item_classes = implode( ' ', $_menu_item_classes ); $args = array( 'menu-item-object-id' => $_menu_item_object_id, 'menu-item-object' => $_menu_item_object, 'menu-item-parent-id' => $_menu_item_menu_item_parent, 'menu-item-position' => intval( $item['menu_order'] ), 'menu-item-type' => $_menu_item_type, 'menu-item-title' => $item['post_title'], 'menu-item-url' => $_menu_item_url, 'menu-item-description' => $item['post_content'], 'menu-item-attr-title' => $item['post_excerpt'], 'menu-item-target' => $_menu_item_target, 'menu-item-classes' => $_menu_item_classes, 'menu-item-xfn' => $_menu_item_xfn, 'menu-item-status' => $item['status'] ); $id = wp_update_nav_menu_item( $menu_id, 0, $args ); if ( $id && ! is_wp_error( $id ) ) $this->processed_menu_items[intval($item['post_id'])] = (int) $id; } /** * If fetching attachments is enabled then attempt to create a new attachment * * @param array $post Attachment post details from WXR * @param string $url URL to fetch attachment from * @return int|WP_Error Post ID on success, WP_Error otherwise */ function process_attachment( $post, $url ) { if ( ! $this->fetch_attachments ) return new WP_Error( 'attachment_processing_error', __( 'Fetching attachments is not enabled', 'wordpress-importer' ) ); // if the URL is absolute, but does not contain address, then upload it assuming base_site_url if ( preg_match( '|^/[\w\W]+$|', $url ) ) $url = rtrim( $this->base_url, '/' ) . $url; $upload = $this->fetch_remote_file( $url, $post ); if ( is_wp_error( $upload ) ) return $upload; if ( $info = wp_check_filetype( $upload['file'] ) ) $post['post_mime_type'] = $info['type']; else return new WP_Error( 'attachment_processing_error', __('Invalid file type', 'wordpress-importer') ); $post['guid'] = $upload['url']; // as per wp-admin/includes/upload.php $post_id = wp_insert_attachment( $post, $upload['file'] ); wp_update_attachment_metadata( $post_id, wp_generate_attachment_metadata( $post_id, $upload['file'] ) ); // remap resized image URLs, works by stripping the extension and remapping the URL stub. if ( preg_match( '!^image/!', $info['type'] ) ) { $parts = pathinfo( $url ); $name = basename( $parts['basename'], ".{$parts['extension']}" ); // PATHINFO_FILENAME in PHP 5.2 $parts_new = pathinfo( $upload['url'] ); $name_new = basename( $parts_new['basename'], ".{$parts_new['extension']}" ); $this->url_remap[$parts['dirname'] . '/' . $name] = $parts_new['dirname'] . '/' . $name_new; } return $post_id; } /** * Attempt to download a remote file attachment * * @param string $url URL of item to fetch * @param array $post Attachment details * @return array|WP_Error Local file location details on success, WP_Error otherwise */ function fetch_remote_file( $url, $post ) { // extract the file name and extension from the url $file_name = basename( $url ); // get placeholder file in the upload dir with a unique, sanitized filename $upload = wp_upload_bits( $file_name, 0, '', $post['upload_date'] ); if ( $upload['error'] ) return new WP_Error( 'upload_dir_error', $upload['error'] ); // fetch the remote url and write it to the placeholder file $headers = wp_get_http( $url, $upload['file'] ); // request failed if ( ! $headers ) { @unlink( $upload['file'] ); return new WP_Error( 'import_file_error', __('Remote server did not respond', 'wordpress-importer') ); } // make sure the fetch was successful if ( $headers['response'] != '200' ) { @unlink( $upload['file'] ); return new WP_Error( 'import_file_error', sprintf( __('Remote server returned error response %1$d %2$s', 'wordpress-importer'), esc_html($headers['response']), get_status_header_desc($headers['response']) ) ); } $filesize = filesize( $upload['file'] ); if ( isset( $headers['content-length'] ) && $filesize != $headers['content-length'] ) { @unlink( $upload['file'] ); return new WP_Error( 'import_file_error', __('Remote file is incorrect size', 'wordpress-importer') ); } if ( 0 == $filesize ) { @unlink( $upload['file'] ); return new WP_Error( 'import_file_error', __('Zero size file downloaded', 'wordpress-importer') ); } $max_size = (int) $this->max_attachment_size(); if ( ! empty( $max_size ) && $filesize > $max_size ) { @unlink( $upload['file'] ); return new WP_Error( 'import_file_error', sprintf(__('Remote file is too large, limit is %s', 'wordpress-importer'), size_format($max_size) ) ); } // keep track of the old and new urls so we can substitute them later $this->url_remap[$url] = $upload['url']; $this->url_remap[$post['guid']] = $upload['url']; // r13735, really needed? // keep track of the destination if the remote url is redirected somewhere else if ( isset($headers['x-final-location']) && $headers['x-final-location'] != $url ) $this->url_remap[$headers['x-final-location']] = $upload['url']; return $upload; } /** * Attempt to associate posts and menu items with previously missing parents * * An imported post's parent may not have been imported when it was first created * so try again. Similarly for child menu items and menu items which were missing * the object (e.g. post) they represent in the menu */ function backfill_parents() { global $wpdb; // find parents for post orphans foreach ( $this->post_orphans as $child_id => $parent_id ) { $local_child_id = $local_parent_id = false; if ( isset( $this->processed_posts[$child_id] ) ) $local_child_id = $this->processed_posts[$child_id]; if ( isset( $this->processed_posts[$parent_id] ) ) $local_parent_id = $this->processed_posts[$parent_id]; if ( $local_child_id && $local_parent_id ) $wpdb->update( $wpdb->posts, array( 'post_parent' => $local_parent_id ), array( 'ID' => $local_child_id ), '%d', '%d' ); } // all other posts/terms are imported, retry menu items with missing associated object $missing_menu_items = $this->missing_menu_items; foreach ( $missing_menu_items as $item ) $this->process_menu_item( $item ); // find parents for menu item orphans foreach ( $this->menu_item_orphans as $child_id => $parent_id ) { $local_child_id = $local_parent_id = 0; if ( isset( $this->processed_menu_items[$child_id] ) ) $local_child_id = $this->processed_menu_items[$child_id]; if ( isset( $this->processed_menu_items[$parent_id] ) ) $local_parent_id = $this->processed_menu_items[$parent_id]; if ( $local_child_id && $local_parent_id ) update_post_meta( $local_child_id, '_menu_item_menu_item_parent', (int) $local_parent_id ); } } /** * Use stored mapping information to update old attachment URLs */ function backfill_attachment_urls() { global $wpdb; // make sure we do the longest urls first, in case one is a substring of another uksort( $this->url_remap, array(&$this, 'cmpr_strlen') ); foreach ( $this->url_remap as $from_url => $to_url ) { // remap urls in post_content $wpdb->query( $wpdb->prepare("UPDATE {$wpdb->posts} SET post_content = REPLACE(post_content, %s, %s)", $from_url, $to_url) ); // remap enclosure urls $result = $wpdb->query( $wpdb->prepare("UPDATE {$wpdb->postmeta} SET meta_value = REPLACE(meta_value, %s, %s) WHERE meta_key='enclosure'", $from_url, $to_url) ); } } /** * Update _thumbnail_id meta to new, imported attachment IDs */ function remap_featured_images() { // cycle through posts that have a featured image foreach ( $this->featured_images as $post_id => $value ) { if ( isset( $this->processed_posts[$value] ) ) { $new_id = $this->processed_posts[$value]; // only update if there's a difference if ( $new_id != $value ) update_post_meta( $post_id, '_thumbnail_id', $new_id ); } } } /** * Parse a WXR file * * @param string $file Path to WXR file for parsing * @return array Information gathered from the WXR file */ function parse( $file ) { $parser = new WXR_Parser(); return $parser->parse( $file ); } // Display import page title function header() { echo '
'; screen_icon(); echo '

' . __( 'Import WordPress', 'wordpress-importer' ) . '

'; $updates = get_plugin_updates(); $basename = plugin_basename(__FILE__); if ( isset( $updates[$basename] ) ) { $update = $updates[$basename]; echo '

'; printf( __( 'A new version of this importer is available. Please update to version %s to ensure compatibility with newer export files.', 'wordpress-importer' ), $update->update->new_version ); echo '

'; } } // Close div.wrap function footer() { echo '
'; } /** * Display introductory text and file upload form */ function greet() { echo '
'; echo '

'.__( 'Howdy! Upload your WordPress eXtended RSS (WXR) file and we’ll import the posts, pages, comments, custom fields, categories, and tags into this site.', 'wordpress-importer' ).'

'; echo '

'.__( 'Choose a WXR (.xml) file to upload, then click Upload file and import.', 'wordpress-importer' ).'

'; wp_import_upload_form( 'admin.php?import=wordpress&step=1' ); echo '
'; } /** * Decide if the given meta key maps to information we will want to import * * @param string $key The meta key to check * @return string|bool The key if we do want to import, false if not */ function is_valid_meta_key( $key ) { // skip attachment metadata since we'll regenerate it from scratch // skip _edit_lock as not relevant for import if ( in_array( $key, array( '_wp_attached_file', '_wp_attachment_metadata', '_edit_lock' ) ) ) return false; return $key; } /** * Decide whether or not the importer is allowed to create users. * Default is true, can be filtered via import_allow_create_users * * @return bool True if creating users is allowed */ function allow_create_users() { return apply_filters( 'import_allow_create_users', true ); } /** * Decide whether or not the importer should attempt to download attachment files. * Default is true, can be filtered via import_allow_fetch_attachments. The choice * made at the import options screen must also be true, false here hides that checkbox. * * @return bool True if downloading attachments is allowed */ function allow_fetch_attachments() { return apply_filters( 'import_allow_fetch_attachments', true ); } /** * Decide what the maximum file size for downloaded attachments is. * Default is 0 (unlimited), can be filtered via import_attachment_size_limit * * @return int Maximum attachment file size to import */ function max_attachment_size() { return apply_filters( 'import_attachment_size_limit', 0 ); } /** * Added to http_request_timeout filter to force timeout at 60 seconds during import * @return int 60 */ function bump_request_timeout() { return 60; } // return the difference in length between two strings function cmpr_strlen( $a, $b ) { return strlen($b) - strlen($a); } } } // class_exists( 'WP_Importer' ) function wordpress_importer_init() { load_plugin_textdomain( 'wordpress-importer', false, dirname( plugin_basename( __FILE__ ) ) . '/languages' ); /** * WordPress Importer object for registering the import callback * @global WP_Import $wp_import */ $GLOBALS['wp_import'] = new WP_Import(); register_importer( 'wordpress', 'WordPress', __('Import posts, pages, comments, custom fields, categories, and tags from a WordPress export file.', 'wordpress-importer'), array( $GLOBALS['wp_import'], 'dispatch' ) ); } add_action( 'admin_init', 'wordpress_importer_init' );