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File Name : class-wp-import.php

<?php
/**
 * WordPress Importer class for managing the import process of a WXR file
 *
 * @package WordPress
 * @subpackage Importer
 */

use WordPress\DataLiberation\URL\WPURL;
use function WordPress\DataLiberation\URL\wp_rewrite_urls;

/**
 * WordPress importer class.
 */
class WP_Import extends WP_Importer {
	public $max_wxr_version = 1.2; // max. supported WXR version

public $id; // WXR attachment ID

// information to import from WXR file
	public $version;
	public $authors         = array();
	public $posts           = array();
	public $terms           = array();
	public $categories      = array();
	public $tags            = array();
	public $base_url        = '';
	public $base_url_parsed = null;
	public $site_url_parsed = null;

// mappings from old information to new
	public $processed_authors    = array();
	public $author_mapping       = array();
	public $processed_terms      = array();
	public $processed_posts      = array();
	public $post_orphans         = array();
	public $processed_menu_items = array();
	public $menu_item_orphans    = array();
	public $missing_menu_items   = array();

public $fetch_attachments = false;
	public $url_remap         = array();
	public $featured_images   = array();

/**
	 * Import options.
	 *
	 * @since 0.9.1
	 * @var array
	 */
	public $options = array();

/**
	 * Registered callback function for the WordPress Importer
	 *
	 * Manages the three separate stages of the WXR import process
	 */
	public function dispatch() {
		$this->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, array( 'rewrite_urls' => '1' === $_POST['rewrite_urls'] ) );
				break;
		}

$this->footer();
	}

/**
	 * The main controller for the actual import stage.
	 *
	 * @param string $file    Path to the WXR file for importing
	 * @param array  $options Options to control import behavior. Supported:
	 *                       - 'rewrite_urls' (bool) Enable rewriting URLs in post content/excerpt.
	 */
	public function import( $file, $options = array() ) {
		$options = wp_parse_args(
			$options,
			array(
				'rewrite_urls' => false,
			)
		);

$this->options = apply_filters( 'wp_import_options', $options );

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 );

/**
		 * If URL rewriting was requested but the WP version is too old, report
		 * an error and disable it.
		 *
		 * More context:
		 * WordPress 6.7 introduced WP_HTML_Tag_Processor::set_modifiable_text
		 * required for wp_rewrite_urls to work. We could also offer a graceful
		 * downgrade and support versions down to WordPress 6.5 where the required
		 * WP_HTML_Tag_Processor::get_token_type() method was introduced.
		 *
		 * Alternatively, it might be possible to just rely on the HTML Processor
		 * polyfill shipped with this plugin and make URL rewriting work in any
		 * WordPress version.
		 */
		if ( $this->options['rewrite_urls'] && version_compare( get_bloginfo( 'version' ), '6.7', '<' ) ) {
			echo '<div class="error"><p><strong>' . __( 'URL rewriting requires WordPress 6.7 or newer. The import will continue without rewriting URLs.', 'wordpress-importer' ) . '</strong></p></div>';
			$this->options['rewrite_urls'] = false;
		}
		// URL rewriting is only possible when we have the previous site base URL
		if ( $this->options['rewrite_urls'] && ! $this->base_url_parsed ) {
			$this->options['rewrite_urls'] = false;
		}

$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
	 */
	public function import_start( $file ) {
		if ( ! is_file( $file ) ) {
			echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';
			echo __( 'The file does not exist, please try again.', 'wordpress-importer' ) . '</p>';
			$this->footer();
			die();
		}

$import_data = $this->parse( $file );

if ( is_wp_error( $import_data ) ) {
			/** @var WP_Error $import_error */
			$import_error = $import_data;
			echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';
			echo esc_html( $import_error->get_error_message() ) . '</p>';
			$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'] );

/**
		 * Add trailing slash to base URL and site URL. Without the trailing slashes,
		 * the WHATWG URL spec tells us compare the parent pathname. For example:
		 *
		 * > is_child_url_of("https://example.com/path", "https://example.com/path-2")
		 * true
		 *
		 * The example above actually ignores the `/path` and `/path-2` parts and only
		 * compares the `example.com` parts.
		 *
		 * With the trailing slashes, the result is false:
		 *
		 * > is_child_url_of("https://example.com/path/", "https://example.com/path-2/")
		 * false
		 *
		 * In this scenario, `/path/` and `/path-2/` are considered in the comparison.
		 */
		$base_url_with_trailing_slash = rtrim( $import_data['base_url'], '/' ) . '/';
		$this->base_url_parsed        = WPURL::parse( $base_url_with_trailing_slash );

$site_url_with_trailing_slash = rtrim( get_site_url(), '/' ) . '/';
		$this->site_url_parsed        = WPURL::parse( $site_url_with_trailing_slash );

wp_defer_term_counting( true );
		wp_defer_comment_counting( true );

do_action( 'import_start' );
	}

/**
	 * Performs post-import cleanup of files and the cache
	 */
	public 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 '<p>' . __( 'All done.', 'wordpress-importer' ) . ' <a href="' . admin_url() . '">' . __( 'Have fun!', 'wordpress-importer' ) . '</a>' . '</p>';
		echo '<p>' . __( 'Remember to update the passwords and roles of imported users.', 'wordpress-importer' ) . '</p>';

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 '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';
			echo esc_html( $file['error'] ) . '</p>';
			return false;
		} elseif ( ! file_exists( $file['file'] ) ) {
			echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';
			printf( __( 'The export file could not be found at <code>%s</code>. It is likely that this was caused by a permissions problem.', 'wordpress-importer' ), esc_html( $file['file'] ) );
			echo '</p>';
			return false;
		}

$this->id    = (int) $file['id'];
		$import_data = $this->parse( $file['file'] );
		if ( is_wp_error( $import_data ) ) {
			/** @var WP_Error $import_error */
			$import_error = $import_data;
			echo '<p><strong>' . __( 'Sorry, there has been an error.', 'wordpress-importer' ) . '</strong><br />';
			echo esc_html( $import_error->get_error_message() ) . '</p>';
			return false;
		}

$this->version = $import_data['version'];
		if ( $this->version > $this->max_wxr_version ) {
			echo '<div class="error"><p><strong>';
			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 '</strong></p></div>';
		}

$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.', 'wordpress-importer' ), esc_html( $post['post_author'] ) );
					echo '<br />';
					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;
		// phpcs:disable Generic.WhiteSpace.ScopeIndent.Incorrect
		?>
<form action="<?php echo admin_url( 'admin.php?import=wordpress&amp;step=2' ); ?>" method="post">
	<?php wp_nonce_field( 'import-wordpress' ); ?>
	<input type="hidden" name="import_id" value="<?php echo $this->id; ?>" />

<?php if ( ! empty( $this->authors ) ) : ?>
	<h3><?php _e( 'Assign Authors', 'wordpress-importer' ); ?></h3>
	<p><?php _e( 'To make it simpler for you to edit and save the imported content, you may want to reassign the author of the imported item to an existing user of this site, such as your primary administrator account.', 'wordpress-importer' ); ?></p>
		<?php if ( $this->allow_create_users() ) : ?>
	<p><?php printf( __( 'If a new user is created by WordPress, a new password will be randomly generated and the new user&#8217;s role will be set as %s. Manually changing the new user&#8217;s details will be necessary.', 'wordpress-importer' ), esc_html( get_option( 'default_role' ) ) ); ?></p>
	<?php endif; ?>
	<ol id="authors">
		<?php foreach ( $this->authors as $author ) : ?>
		<li><?php $this->author_select( $j++, $author ); ?></li>
	<?php endforeach; ?>
	</ol>
		<?php endif; ?>

<?php if ( $this->allow_fetch_attachments() ) : ?>
	<h3><?php _e( 'Import Attachments', 'wordpress-importer' ); ?></h3>
	<p>
		<input type="checkbox" value="1" name="fetch_attachments" id="import-attachments" />
		<label for="import-attachments"><?php _e( 'Download and import file attachments', 'wordpress-importer' ); ?></label>
	</p>
		<?php endif; ?>

<p class="submit"><input type="submit" class="button" value="<?php esc_attr_e( 'Submit', 'wordpress-importer' ); ?>" /></p>
</form>
		<?php
		// phpcs:enable Generic.WhiteSpace.ScopeIndent.Incorrect
	}

/**
	 * Display import options for an individual author. That is, either create
	 * a new user based on import info or map to an existing user
	 *
	 * @param int $n Index for each author in the form
	 * @param array $author Author information, e.g. login, display name, email
	 */
	public function author_select( $n, $author ) {
		_e( 'Import author:', 'wordpress-importer' );
		echo ' <strong>' . esc_html( $author['author_display_name'] );
		if ( '1.0' != $this->version ) {
			echo ' (' . esc_html( $author['author_login'] ) . ')';
		}
		echo '</strong><br />';

if ( '1.0' != $this->version ) {
			echo '<div style="margin-left:18px">';
		}

$create_users = $this->allow_create_users();
		if ( $create_users ) {
			echo '<label for="user_new_' . $n . '">';
			if ( '1.0' != $this->version ) {
				_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 '</label>';

echo ' <input type="text" id="user_new_' . $n . '" name="user_new[' . $n . ']" value="' . $value . '" /><br />';
		}

echo '<label for="imported_authors_' . $n . '">';
		if ( ! $create_users && '1.0' == $this->version ) {
			_e( 'assign posts to an existing user:', 'wordpress-importer' );
		} else {
			_e( 'or assign posts to an existing user:', 'wordpress-importer' );
		}
		echo '</label>';

echo ' ' . wp_dropdown_users(
			array(
				'name'            => "user_map[$n]",
				'id'              => 'imported_authors_' . $n,
				'multi'           => true,
				'show_option_all' => __( '- Select -', 'wordpress-importer' ),
				'show'            => 'display_name_with_login',
				'echo'            => 0,
			)
		);

echo '<input type="hidden" name="imported_authors[' . $n . ']" value="' . esc_attr( $author['author_login'] ) . '" />';

if ( '1.0' != $this->version ) {
			echo '</div>';
		}
	}

/**
	 * 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;
				}
			} elseif ( $create_users ) {
				if ( ! empty( $_POST['user_new'][ $i ] ) ) {
					$user_id = wp_create_user( $_POST['user_new'][ $i ], wp_generate_password() );
				} elseif ( '1.0' != $this->version ) {
					$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 '<br />';
				}
			}

// 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;
			}

$parent      = empty( $cat['category_parent'] ) ? 0 : category_exists( $cat['category_parent'] );
			$description = isset( $cat['category_description'] ) ? $cat['category_description'] : '';

$data = array(
				'category_nicename'    => $cat['category_nicename'],
				'category_parent'      => $parent,
				'cat_name'             => wp_slash( $cat['cat_name'] ),
				'category_description' => wp_slash( $description ),
			);

$id = wp_insert_category( $data, true );
			if ( ! is_wp_error( $id ) && $id > 0 ) {
				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 '<br />';
				continue;
			}

$this->process_termmeta( $cat, $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;
			}

$description = isset( $tag['tag_description'] ) ? $tag['tag_description'] : '';
			$args        = array(
				'slug'        => $tag['tag_slug'],
				'description' => wp_slash( $description ),
			);

$id = wp_insert_term( wp_slash( $tag['tag_name'] ), 'post_tag', $args );
			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 '<br />';
				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'];
				}
			}

$description = isset( $term['term_description'] ) ? $term['term_description'] : '';
			$args        = array(
				'slug'        => $term['slug'],
				'description' => wp_slash( $description ),
				'parent'      => (int) $parent,
			);

$id = wp_insert_term( wp_slash( $term['term_name'] ), $term['term_taxonomy'], $args );
			if ( ! is_wp_error( $id ) ) {
				if ( isset( $term['term_id'] ) ) {
					$this->processed_terms[ intval( $term['term_id'] ) ] = $id['term_id'];
				}
			} else {
				printf( __( 'Failed to import %1$s %2$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 '<br />';
				continue;
			}

$this->process_termmeta( $term, $id['term_id'] );
		}

unset( $this->terms );
	}

/**
	 * Add metadata to imported term.
	 *
	 * @since 0.6.2
	 *
	 * @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 0.6.2
		 *
		 * @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 0.6.2
			 *
			 * @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 = $this->maybe_unserialize( $meta['value'] );

add_term_meta( $term_id, wp_slash( $key ), wp_slash_strings_only( $value ) );

/**
			 * Fires after term meta is imported.
			 *
			 * @since 0.6.2
			 *
			 * @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( $post['post_type'] ) ) {
				printf(
					__( 'Failed to import &#8220;%1$s&#8221;: Invalid post type %2$s', 'wordpress-importer' ),
					esc_html( $post['post_title'] ),
					esc_html( $post['post_type'] )
				);
				echo '<br />';
				do_action( 'wp_import_post_exists', $post );
				continue;
			}

if ( isset( $this->processed_posts[ $post['post_id'] ] ) && ! empty( $post['post_id'] ) ) {
				continue;
			}

if ( 'auto-draft' == $post['status'] ) {
				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'], $post['post_type'] );

/**
			* 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 0.6.2
			*
			* @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 ) == $post['post_type'] ) {
				printf( __( '%1$s &#8220;%2$s&#8221; already exists.', 'wordpress-importer' ), $post_type_object->labels->singular_name, esc_html( $post['post_title'] ) );
				echo '<br />';
				$comment_post_id = $post_exists;
				$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'],
				);

if ( $this->options['rewrite_urls'] ) {
					$url_mapping              = array(
						$this->base_url_parsed->toString() => $this->site_url_parsed,
					);
					$postdata['post_content'] = wp_rewrite_urls(
						array(
							'block_markup' => $postdata['post_content'],
							'url-mapping'  => $url_mapping,
						)
					);
					$postdata['post_excerpt'] = wp_rewrite_urls(
						array(
							'block_markup' => $postdata['post_excerpt'],
							'url-mapping'  => $url_mapping,
						)
					);
				}

$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 ( '_wp_attached_file' == $meta['key'] ) {
								if ( preg_match( '%^[0-9]{4}/[0-9]{2}%', $meta['value'], $matches ) ) {
									$postdata['upload_date'] = $matches[0];
								}
								break;
							}
						}
					}

$comment_post_id = $this->process_attachment( $postdata, $remote_url );
					$post_id         = $comment_post_id;
				} else {
					$comment_post_id = wp_insert_post( $postdata, true );
					$post_id         = $comment_post_id;
					do_action( 'wp_import_insert_post', $post_id, $original_post_id, $postdata, $post );
				}

if ( is_wp_error( $post_id ) ) {
					printf(
						__( 'Failed to import %1$s &#8220;%2$s&#8221;', '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 '<br />';
					continue;
				}

if ( 1 == $post['is_sticky'] ) {
					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, $post );
						} else {
							printf( __( 'Failed to import %1$s %2$s', 'wordpress-importer' ), esc_html( $taxonomy ), esc_html( $term['name'] ) );
							if ( defined( 'IMPORT_DEBUG' ) && IMPORT_DEBUG ) {
								echo ': ' . $t->get_error_message();
							}
							echo '<br />';
							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_data = wp_slash( $comment );
						unset( $comment_data['commentmeta'] ); // Handled separately, wp_insert_comment() also expects `comment_meta`.
						$comment_data = wp_filter_comment( $comment_data );

$inserted_comments[ $key ] = wp_insert_comment( $comment_data );

do_action( 'wp_import_insert_comment', $inserted_comments[ $key ], $comment, $comment_post_id, $post );

foreach ( $comment['commentmeta'] as $meta ) {
							$value = $this->maybe_unserialize( $meta['value'] );

add_comment_meta( $inserted_comments[ $key ], wp_slash( $meta['key'] ), wp_slash_strings_only( $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 = $this->maybe_unserialize( $meta['value'] );
						}

add_post_meta( $post_id, wp_slash( $key ), wp_slash_strings_only( $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', 'wordpress-importer' );
			echo '<br />';
			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 '<br />';
			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 ) ];
		} elseif ( '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 ) ];
		} elseif ( '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 ) ];
		} elseif ( $_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 = $this->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', '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;
		}

$info = wp_check_filetype( $upload['file'] );
		if ( $info ) {
			$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
	 */
	public function fetch_remote_file( $url, $post ) {
		// Extract the file name from the URL.
		$path      = parse_url( $url, PHP_URL_PATH );
		$file_name = '';
		if ( is_string( $path ) ) {
			$file_name = basename( $path );
		}

if ( ! $file_name ) {
			$file_name = md5( $url );
		}

$tmp_file_name = wp_tempnam( $file_name );
		if ( ! $tmp_file_name ) {
			return new WP_Error( 'import_no_file', __( 'Could not create temporary file.', 'wordpress-importer' ) );
		}

// Fetch the remote URL and write it to the placeholder file.
		$remote_response = wp_safe_remote_get(
			$url,
			array(
				'timeout'  => 300,
				'stream'   => true,
				'filename' => $tmp_file_name,
				'headers'  => array(
					'Accept-Encoding' => 'identity',
				),
			)
		);

if ( is_wp_error( $remote_response ) ) {
			@unlink( $tmp_file_name );
			return new WP_Error(
				'import_file_error',
				sprintf(
					/* translators: 1: The WordPress error message. 2: The WordPress error code. */
					__( 'Request failed due to an error: %1$s (%2$s)', 'wordpress-importer' ),
					esc_html( $remote_response->get_error_message() ),
					esc_html( $remote_response->get_error_code() )
				)
			);
		}

$remote_response_code = (int) wp_remote_retrieve_response_code( $remote_response );

// Make sure the fetch was successful.
		if ( 200 !== $remote_response_code ) {
			@unlink( $tmp_file_name );
			return new WP_Error(
				'import_file_error',
				sprintf(
					/* translators: 1: The HTTP error message. 2: The HTTP error code. */
					__( 'Remote server returned the following unexpected result: %1$s (%2$s)', 'wordpress-importer' ),
					get_status_header_desc( $remote_response_code ),
					esc_html( $remote_response_code )
				)
			);
		}

$headers = wp_remote_retrieve_headers( $remote_response );

// Request failed.
		if ( ! $headers ) {
			@unlink( $tmp_file_name );
			return new WP_Error( 'import_file_error', __( 'Remote server did not respond', 'wordpress-importer' ) );
		}

$filesize = (int) filesize( $tmp_file_name );

if ( 0 === $filesize ) {
			@unlink( $tmp_file_name );
			return new WP_Error( 'import_file_error', __( 'Zero size file downloaded', 'wordpress-importer' ) );
		}

if ( ! isset( $headers['content-encoding'] ) && isset( $headers['content-length'] ) && $filesize !== (int) $headers['content-length'] ) {
			@unlink( $tmp_file_name );
			return new WP_Error( 'import_file_error', __( 'Downloaded file has incorrect size', 'wordpress-importer' ) );
		}

$max_size = (int) $this->max_attachment_size();
		if ( ! empty( $max_size ) && $filesize > $max_size ) {
			@unlink( $tmp_file_name );
			return new WP_Error( 'import_file_error', sprintf( __( 'Remote file is too large, limit is %s', 'wordpress-importer' ), size_format( $max_size ) ) );
		}

// Override file name with Content-Disposition header value.
		if ( ! empty( $headers['content-disposition'] ) ) {
			$file_name_from_disposition = self::get_filename_from_disposition( (array) $headers['content-disposition'] );
			if ( $file_name_from_disposition ) {
				$file_name = $file_name_from_disposition;
			}
		}

// Set file extension if missing.
		$file_ext = pathinfo( $file_name, PATHINFO_EXTENSION );
		if ( ! $file_ext && ! empty( $headers['content-type'] ) ) {
			$extension = self::get_file_extension_by_mime_type( $headers['content-type'] );
			if ( $extension ) {
				$file_name = "{$file_name}.{$extension}";
			}
		}

// Handle the upload like _wp_handle_upload() does.
		$wp_filetype     = wp_check_filetype_and_ext( $tmp_file_name, $file_name );
		$ext             = empty( $wp_filetype['ext'] ) ? '' : $wp_filetype['ext'];
		$type            = empty( $wp_filetype['type'] ) ? '' : $wp_filetype['type'];
		$proper_filename = empty( $wp_filetype['proper_filename'] ) ? '' : $wp_filetype['proper_filename'];

// Check to see if wp_check_filetype_and_ext() determined the filename was incorrect.
		if ( $proper_filename ) {
			$file_name = $proper_filename;
		}

if ( ( ! $type || ! $ext ) && ! current_user_can( 'unfiltered_upload' ) ) {
			return new WP_Error( 'import_file_error', __( 'Sorry, this file type is not permitted for security reasons.', 'wordpress-importer' ) );
		}

$uploads = wp_upload_dir( $post['upload_date'] );
		if ( ! ( $uploads && false === $uploads['error'] ) ) {
			return new WP_Error( 'upload_dir_error', $uploads['error'] );
		}

// Move the file to the uploads dir.
		$file_name     = wp_unique_filename( $uploads['path'], $file_name );
		$new_file      = $uploads['path'] . "/$file_name";
		$move_new_file = copy( $tmp_file_name, $new_file );

if ( ! $move_new_file ) {
			@unlink( $tmp_file_name );
			return new WP_Error( 'import_file_error', __( 'The uploaded file could not be moved', 'wordpress-importer' ) );
		}

// Set correct file permissions.
		$stat  = stat( dirname( $new_file ) );
		$perms = $stat['mode'] & 0000666;
		chmod( $new_file, $perms );

$upload = array(
			'file'  => $new_file,
			'url'   => $uploads['url'] . "/$file_name",
			'type'  => $wp_filetype['type'],
			'error' => false,
		);

/**
		 * When URL rewriting is enabled, posts such as this one:
		 *
		 *     <img src="https://example.com/subpath/wp-content/uploads/2008/06/canola2.jpg" />
		 *
		 * Are already stored as:
		 *
		 *     <img src="https://example.org/wp-content/uploads/2008/06/canola2.jpg" />
		 *
		 * Therefore, we can't just remap the old URL to the new URL here. This substring
		 * is no longer present in the post:
		 *
		 *     https://example.com/subpath/wp-content/uploads/2008/06/canola2.jpg
		 *
		 * We need to replace the base URL in the media file URL the same way as we did
		 * in the post content:
		 *
		 *     https://example.org/wp-content/uploads/2008/06/canola2.jpg
		 *
		 * Only from there we can remap that URL to the new media files URL:
		 *
		 *     https://example.org/wp-content/uploads/canola2.jpg"
		 *                                            ^ there may be no 2008/06 on the target site.
		 */
		if ( $this->options['rewrite_urls'] ) {
			$url          = WPURL::replace_base_url(
				array(
					'url'          => $url,
					'old_base_url' => $this->base_url_parsed,
					'new_base_url' => $this->site_url_parsed,
				)
			);
			$post['guid'] = WPURL::replace_base_url(
				array(
					'url'          => $post['guid'],
					'old_base_url' => $this->base_url_parsed,
					'new_base_url' => $this->site_url_parsed,
				)
			);
			if ( isset( $headers['x-final-location'] ) ) {
				$headers['x-final-location'] = WPURL::replace_base_url(
					array(
						'url'          => $headers['x-final-location'],
						'old_base_url' => $this->base_url_parsed,
						'new_base_url' => $this->site_url_parsed,
					)
				);
			}
		}

$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  = false;
			$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  = 0;
			$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 '<div class="wrap">';
		echo '<h2>' . __( 'Import WordPress', 'wordpress-importer' ) . '</h2>';

$updates  = get_plugin_updates();
		$basename = plugin_basename( __FILE__ );
		if ( isset( $updates[ $basename ] ) ) {
			$update = $updates[ $basename ];
			echo '<div class="error"><p><strong>';
			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 '</strong></p></div>';
		}
	}

// Close div.wrap
	public function footer() {
		echo '</div>';
	}

/**
	 * Display introductory text and file upload form
	 */
	public function greet() {
		echo '<div class="narrow">';
		echo '<p>' . __( 'Howdy! Upload your WordPress eXtended RSS (WXR) file and we&#8217;ll import the posts, pages, comments, custom fields, categories, and tags into this site.', 'wordpress-importer' ) . '</p>';
		echo '<p>' . __( 'Choose a WXR (.xml) file to upload, then click Upload file and import.', 'wordpress-importer' ) . '</p>';
		wp_import_upload_form( 'admin.php?import=wordpress&amp;step=1' );
		echo '</div>';
	}

/**
	 * 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' ), true ) ) {
			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 );
	}

/**
	 * Parses filename from a Content-Disposition header value.
	 *
	 * As per RFC6266:
	 *
	 *     content-disposition = "Content-Disposition" ":"
	 *                            disposition-type *( ";" disposition-parm )
	 *
	 *     disposition-type    = "inline" | "attachment" | disp-ext-type
	 *                         ; case-insensitive
	 *     disp-ext-type       = token
	 *
	 *     disposition-parm    = filename-parm | disp-ext-parm
	 *
	 *     filename-parm       = "filename" "=" value
	 *                         | "filename*" "=" ext-value
	 *
	 *     disp-ext-parm       = token "=" value
	 *                         | ext-token "=" ext-value
	 *     ext-token           = <the characters in token, followed by "*">
	 *
	 * @since 0.7.0
	 *
	 * @see WP_REST_Attachments_Controller::get_filename_from_disposition()
	 *
	 * @link http://tools.ietf.org/html/rfc2388
	 * @link http://tools.ietf.org/html/rfc6266
	 *
	 * @param string[] $disposition_header List of Content-Disposition header values.
	 * @return string|null Filename if available, or null if not found.
	 */
	protected static function get_filename_from_disposition( $disposition_header ) {
		// Get the filename.
		$filename = null;

foreach ( $disposition_header as $value ) {
			$value = trim( $value );

if ( strpos( $value, ';' ) === false ) {
				continue;
			}

list( $type, $attr_parts ) = explode( ';', $value, 2 );

$attr_parts = explode( ';', $attr_parts );
			$attributes = array();

foreach ( $attr_parts as $part ) {
				if ( strpos( $part, '=' ) === false ) {
					continue;
				}

list( $key, $value ) = explode( '=', $part, 2 );

$attributes[ trim( $key ) ] = trim( $value );
			}

if ( empty( $attributes['filename'] ) ) {
				continue;
			}

$filename = trim( $attributes['filename'] );

// Unquote quoted filename, but after trimming.
			if ( substr( $filename, 0, 1 ) === '"' && substr( $filename, -1, 1 ) === '"' ) {
				$filename = substr( $filename, 1, -1 );
			}
		}

return $filename;
	}

/**
	 * Retrieves file extension by mime type.
	 *
	 * @since 0.7.0
	 *
	 * @param string $mime_type Mime type to search extension for.
	 * @return string|null File extension if available, or null if not found.
	 */
	protected static function get_file_extension_by_mime_type( $mime_type ) {
		static $map = null;

if ( is_array( $map ) ) {
			return isset( $map[ $mime_type ] ) ? $map[ $mime_type ] : null;
		}

$mime_types = wp_get_mime_types();
		$map        = array_flip( $mime_types );

// Some types have multiple extensions, use only the first one.
		foreach ( $map as $type => $extensions ) {
			$map[ $type ] = strtok( $extensions, '|' );
		}

return isset( $map[ $mime_type ] ) ? $map[ $mime_type ] : null;
	}

/**
	 * Unserializes data only if it was serialized.
	 *
	 * @since 0.8.4
	 *
	 * @param string $data Data that might be unserialized.
	 * @return mixed Unserialized data can be any type.
	 */
	protected function maybe_unserialize( $data ) {
		// Don't attempt to unserialize data that wasn't serialized going in.
		if ( is_serialized( $data ) ) {
			// Transform the serialized objects to a stdClass object.
			$data = preg_replace( '/O:\d+:"[^"]+":/', 'O:8:"stdClass":', $data );

return maybe_unserialize( $data );
		}

return $data;
	}
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	moonrcjl/moonrcjl	0775	2025-10-21 01:08:17
..	dir	-	moonrcjl/moonrcjl	0755	2025-11-19 08:24:29
parsers	dir	-	moonrcjl/moonrcjl	0775	2025-10-21 01:08:17
php-toolkit	dir	-	moonrcjl/moonrcjl	0775	2025-10-21 01:08:17
class-wp-import.php	text/x-php	56.32 KB	moonrcjl/moonrcjl	0664	2025-10-21 01:08:17
compat.php	text/x-php	864 B	moonrcjl/moonrcjl	0664	2025-10-21 01:08:17
parsers.php	text/x-php	642 B	moonrcjl/moonrcjl	0664	2025-10-21 01:08:17
readme.txt	text/plain	6.6 KB	moonrcjl/moonrcjl	0664	2025-10-21 01:08:17
wordpress-importer.php	text/x-php	2.62 KB	moonrcjl/moonrcjl	0664	2025-10-21 01:08:17

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