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 $file Path to the WXR file for importing
*/
public function import($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_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 $file Path to the WXR file for importing
*/
public function import_start($file)
{
if (!is_file($file)) {
echo '
' . __('Sorry, there has been an error.', SG_POPUP_TEXT_DOMAIN) . ' ';
echo __('The file does not exist, please try again.', SG_POPUP_TEXT_DOMAIN) . '
';
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
*/
public function handle_upload()
{
$file = wp_import_handle_upload();
if (isset($file['error'])) {
echo '
' . __('Sorry, there has been an error.', SG_POPUP_TEXT_DOMAIN).' ';
echo esc_html($file['error']).'
';
return false;
}
else if (!file_exists($file['file'])) {
echo '
' . __('Sorry, there has been an error.', SG_POPUP_TEXT_DOMAIN).' ';
printf(__('The export file could not be found at %s. It is likely that this was caused by a permissions problem.', SG_POPUP_TEXT_DOMAIN), esc_html($file['file']));
echo '
';
printf(__('This WXR file (version %s) may not be supported by this version of the importer. Please consider updating.', SG_POPUP_TEXT_DOMAIN), esc_html($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 $import_data Data returned by a WXR parser
*/
public function get_authors_from_import($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($login)) {
printf(__('Failed to import author %s. Their posts will be attributed to the current user.', SG_POPUP_TEXT_DOMAIN), esc_html($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
*/
public function import_options()
{
$j = 0;
?>
' . esc_html($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:', SG_POPUP_TEXT_DOMAIN);
$value = '';
} else {
_e('as a new user:', SG_POPUP_TEXT_DOMAIN);
$value = esc_attr(sanitize_user($author['author_login'], true));
}
echo ' ';
}
if (!$create_users && $this->version == '1.0')
_e('assign posts to an existing user:', SG_POPUP_TEXT_DOMAIN);
else
_e('or assign posts to an existing user:', SG_POPUP_TEXT_DOMAIN);
wp_dropdown_users(array('name' => "user_map[$n]", 'multi' => true, 'show_option_all' => __('- Select -', SG_POPUP_TEXT_DOMAIN)));
echo '';
if ($this->version != '1.0')
echo '
';
}
/**
* Map old author logins to local user IDs based on decisions made
* in import options form. Can map to an existing user, create a new user
* or falls back to the current user in case of error with either of the previous
*/
public function get_author_mapping()
{
if (!isset($_POST['imported_authors'])) {
return;
}
$create_users = $this->allow_create_users();
foreach ((array) $_POST['imported_authors'] as $i => $old_login) {
// Multisite 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] = $user_id;
} else {
printf(__('Failed to create new user for %s. Their posts will be attributed to the current user.', SG_POPUP_TEXT_DOMAIN), esc_html($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
*/
public function process_categories()
{
$this->categories = apply_filters('wp_import_categories', $this->categories);
if (empty($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
);
$catarr = wp_slash($catarr);
$id = wp_insert_category($catarr);
if (!is_wp_error($id)) {
if (isset($cat['term_id']))
$this->processed_terms[intval($cat['term_id'])] = $id;
} else {
printf(__('Failed to import category %s', SG_POPUP_TEXT_DOMAIN), esc_html($cat['category_nicename']));
if (defined('IMPORT_DEBUG') && IMPORT_DEBUG)
echo ': ' . $id->get_error_message();
echo ' ';
continue;
}
$this->process_termmeta($cat, $id['term_id']);
}
unset($this->categories);
}
/**
* Create new post tags based on import information
*
* Doesn't create a tag if its slug already exists
*/
public function process_tags()
{
$this->tags = apply_filters('wp_import_tags', $this->tags);
if (empty($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;
}
$tag = wp_slash($tag);
$tag_desc = isset($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'])] = $id['term_id'];
} else {
printf(__('Failed to import post tag %s', SG_POPUP_TEXT_DOMAIN), esc_html($tag['tag_name']));
if (defined('IMPORT_DEBUG') && IMPORT_DEBUG)
echo ': ' . $id->get_error_message();
echo ' ';
continue;
}
$this->process_termmeta($tag, $id['term_id']);
}
unset($this->tags);
}
/**
* Create new terms based on import information
*
* Doesn't create a term its slug already exists
*/
public function process_terms()
{
$this->terms = apply_filters('wp_import_terms', $this->terms);
if (empty($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'];
}
$term = wp_slash($term);
$description = isset($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'])] = $id['term_id'];
} else {
printf(__('Failed to import %s %s', SG_POPUP_TEXT_DOMAIN), esc_html($term['term_taxonomy']), esc_html($term['term_name']));
if (defined('IMPORT_DEBUG') && IMPORT_DEBUG)
echo ': ' . $id->get_error_message();
echo ' ';
continue;
}
$this->process_termmeta($term, $id['term_id']);
}
unset($this->terms);
}
/**
* Add metadata to imported term.
*
* @since 3.1.0
*
* @param array $term Term data from WXR import.
* @param int $term_id ID of the newly created term.
*/
protected function process_termmeta($term, $term_id)
{
if (!isset($term['termmeta'])) {
$term['termmeta'] = array();
}
/**
* Filters the metadata attached to an imported term.
*
* @since 3.1.0
*
* @param array $termmeta Array of term meta.
* @param int $term_id ID of the newly created term.
* @param array $term Term data from the WXR import.
*/
$term['termmeta'] = apply_filters('wp_import_term_meta', $term['termmeta'], $term_id, $term);
if (empty($term['termmeta'])) {
return;
}
foreach ($term['termmeta'] as $meta) {
/**
* Filters the meta key for an imported piece of term meta.
*
* @since 3.1.0
*
* @param string $meta_key Meta key.
* @param int $term_id ID of the newly created term.
* @param array $term Term data from the WXR import.
*/
$key = apply_filters('import_term_meta_key', $meta['key'], $term_id, $term);
if (!$key) {
continue;
}
// Export gets meta straight from the DB so could have a serialized string
$value = maybe_unserialize($meta['value']);
add_term_meta($term_id, $key, $value);
/**
* Fires after term meta is imported.
*
* @since 3.1.0
*
* @param int $term_id ID of the newly created term.
* @param string $key Meta key.
* @param mixed $value Meta value.
*/
do_action('import_term_meta', $term_id, $key, $value);
}
}
/**
* 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.
*/
public function process_posts()
{
$this->posts = apply_filters('wp_import_posts', $this->posts);
foreach ($this->posts as $post) {
$post = apply_filters('wp_import_post_data_raw', $post);
if (!post_type_exists($post['post_type'])) {
printf(__('Failed to import “%s”: Invalid post type %s', SG_POPUP_TEXT_DOMAIN),
esc_html($post['post_title']), esc_html($post['post_type']));
echo ' ';
do_action('wp_import_post_exists', $post);
continue;
}
if (isset($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']);
/**
* Filter ID of the existing post corresponding to post currently importing.
*
* Return 0 to force the post to be imported. Filter the ID to be something else
* to override which existing post is mapped to the imported post.
*
* @see post_exists()
* @since 3.1.0
*
* @param int $post_exists Post ID, or 0 if post did not exist.
* @param array $post The post array to be inserted.
*/
$post_exists = apply_filters('wp_import_existing_post', $post_exists, $post);
if ($post_exists && get_post_type($post_exists) == $post['post_type']) {
printf(__('%s “%s” already exists.', SG_POPUP_TEXT_DOMAIN), $post_type_object->labels->singular_name, esc_html($post['post_title']));
echo ' ';
$comment_post_ID = $post_id = $post_exists;
$this->processed_posts[ intval($post['post_id']) ] = intval($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']
);
$original_post_ID = $post['post_id'];
$postdata = apply_filters('wp_import_post_data_processed', $postdata, $post);
$postdata = wp_slash($postdata);
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);
do_action('wp_import_insert_post', $post_id, $original_post_ID, $postdata, $post);
}
if (is_wp_error($post_id)) {
printf(__('Failed to import %s “%s”', SG_POPUP_TEXT_DOMAIN),
$post_type_object->labels->singular_name, esc_html($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) $post_id;
if (!isset($post['terms']))
$post['terms'] = array();
$post['terms'] = apply_filters('wp_import_post_terms', $post['terms'], $post_id, $post);
// add categories, tags and other terms
if (!empty($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'];
do_action('wp_import_insert_term', $t, $term, $post_id, $post);
} else {
printf(__('Failed to import %s %s', SG_POPUP_TEXT_DOMAIN), esc_html($taxonomy), esc_html($term['name']));
if (defined('IMPORT_DEBUG') && IMPORT_DEBUG)
echo ': ' . $t->get_error_message();
echo ' ';
do_action('wp_import_insert_term_failed', $t, $term, $post_id, $post);
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);
do_action('wp_import_set_post_terms', $tt_ids, $ids, $tax, $post_id, $post);
}
unset($post['terms'], $terms_to_set);
}
if (!isset($post['comments']))
$post['comments'] = array();
$post['comments'] = apply_filters('wp_import_post_comments', $post['comments'], $post_id, $post);
// add/update comments
if (!empty($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']];
$comment = wp_slash($comment);
$comment = wp_filter_comment($comment);
$inserted_comments[$key] = wp_insert_comment($comment);
do_action('wp_import_insert_comment', $inserted_comments[$key], $comment, $comment_post_ID, $post);
foreach($comment['commentmeta'] as $meta) {
$value = maybe_unserialize($meta['value']);
add_comment_meta($inserted_comments[$key], $meta['key'], $value);
}
$num_comments++;
}
}
unset($newcomments, $inserted_comments, $post['comments']);
}
if (!isset($post['postmeta']))
$post['postmeta'] = array();
$post['postmeta'] = apply_filters('wp_import_post_meta', $post['postmeta'], $post_id, $post);
// add/update post meta
if (!empty($post['postmeta'])) {
foreach ($post['postmeta'] as $meta) {
$key = apply_filters('import_post_meta_key', $meta['key'], $post_id, $post);
$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 $item Menu item details from WXR file
*/
public function process_menu_item($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', SG_POPUP_TEXT_DOMAIN);
echo ' ';
return;
}
$menu_id = term_exists($menu_slug, 'nav_menu');
if (!$menu_id) {
printf(__('Menu item skipped due to invalid menu slug: %s', SG_POPUP_TEXT_DOMAIN), esc_html($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 $url URL to fetch attachment from
* @return int|WP_Error Post ID on success, WP_Error otherwise
*/
public function process_attachment($post, $url)
{
if (!$this->fetch_attachments) {
return new WP_Error('attachment_processing_error',
__('Fetching attachments is not enabled', SG_POPUP_TEXT_DOMAIN));
}
// 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', SG_POPUP_TEXT_DOMAIN));
}
$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 $post Attachment details
* @return array|WP_Error Local file location details on success, WP_Error otherwise
*/
public function fetch_remote_file($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, null, '', $post['upload_date']);
if ($upload['error']) {
return new WP_Error('upload_dir_error', $upload['error']);
}
// fetch the remote url and write it to the placeholder file
$remote_response = wp_safe_remote_get($url, array(
'timeout' => 300,
'stream' => true,
'filename' => $upload['file'],
));
$headers = wp_remote_retrieve_headers($remote_response);
// request failed
if (!$headers) {
@unlink($upload['file']);
return new WP_Error('import_file_error', __('Remote server did not respond', SG_POPUP_TEXT_DOMAIN));
}
$remote_response_code = wp_remote_retrieve_response_code($remote_response);
// make sure the fetch was successful
if ($remote_response_code != '200') {
@unlink($upload['file']);
return new WP_Error('import_file_error', sprintf(__('Remote server returned error response %1$d %2$s', SG_POPUP_TEXT_DOMAIN), esc_html($remote_response_code), get_status_header_desc($remote_response_code)));
}
$filesize = filesize($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', SG_POPUP_TEXT_DOMAIN));
}
if (0 == $filesize) {
@unlink($upload['file']);
return new WP_Error('import_file_error', __('Zero size file downloaded', SG_POPUP_TEXT_DOMAIN));
}
$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', SG_POPUP_TEXT_DOMAIN), 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
*/
public 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' => $local_child_id), '%d', '%d');
clean_post_cache($local_child_id);
}
}
// 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
*/
public 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, $to_url));
}
}
/**
* Update _thumbnail_id meta to new, imported attachment IDs
*/
public function remap_featured_images()
{
// cycle through posts that have a featured image
foreach ($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 $file Path to WXR file for parsing
* @return array Information gathered from the WXR file
*/
public function parse($file)
{
$parser = new WXR_Parser();
return $parser->parse($file);
}
// Display import page title
public function header()
{
echo '
';
printf(__('A new version of this importer is available. Please update to version %s to ensure compatibility with newer export files.', SG_POPUP_TEXT_DOMAIN), $update->update->new_version);
echo '
';
}
}
// Close div.wrap
public function footer()
{
echo '
';
}
/**
* Display introductory text and file upload form
*/
public 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.', SG_POPUP_TEXT_DOMAIN).'
';
echo '
'.__('Choose a WXR (.xml) file to upload, then click Upload file and import.', SG_POPUP_TEXT_DOMAIN).'
';
}
/**
* Decide if the given meta key maps to information we will want to import
*
* @param string $key The meta key to check
* @return string|bool The key if we do want to import, false if not
*/
public function is_valid_meta_key($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 $key;
}
/**
* Decide whether or not the importer is allowed to create users.
* Default is true, can be filtered via import_allow_create_users
*
* @return bool True if creating users is allowed
*/
public function allow_create_users()
{
return apply_filters('import_allow_create_users', true);
}
/**
* Decide whether or not the importer should attempt to download attachment files.
* Default is true, can be filtered via import_allow_fetch_attachments. The choice
* made at the import options screen must also be true, false here hides that checkbox.
*
* @return bool True if downloading attachments is allowed
*/
public function allow_fetch_attachments()
{
return apply_filters('import_allow_fetch_attachments', true);
}
/**
* Decide what the maximum file size for downloaded attachments is.
* Default is 0 (unlimited), can be filtered via import_attachment_size_limit
*
* @return int Maximum attachment file size to import
*/
public function max_attachment_size()
{
return apply_filters('import_attachment_size_limit', 0);
}
/**
* Added to http_request_timeout filter to force timeout at 60 seconds during import
* @return int 60
*/
public function bump_request_timeout($val)
{
return 60;
}
// return the difference in length between two strings
public function cmpr_strlen($a, $b)
{
return strlen($b) - strlen($a);
}
}