/wp-includes/canonical.php
PHP | 917 lines | 619 code | 151 blank | 147 comment | 213 complexity | 7e956e43f970bcdfe616894cf33370f1 MD5 | raw file
Possible License(s): 0BSD
- <?php
- /**
- * Canonical API to handle WordPress Redirecting
- *
- * Based on "Permalink Redirect" from Scott Yang and "Enforce www. Preference"
- * by Mark Jaquith
- *
- * @package WordPress
- * @since 2.3.0
- */
- /**
- * Redirects incoming links to the proper URL based on the site url.
- *
- * Search engines consider www.somedomain.com and somedomain.com to be two
- * different URLs when they both go to the same location. This SEO enhancement
- * prevents penalty for duplicate content by redirecting all incoming links to
- * one or the other.
- *
- * Prevents redirection for feeds, trackbacks, searches, and
- * admin URLs. Does not redirect on non-pretty-permalink-supporting IIS 7+,
- * page/post previews, WP admin, Trackbacks, robots.txt, favicon.ico, searches,
- * or on POST requests.
- *
- * Will also attempt to find the correct link when a user enters a URL that does
- * not exist based on exact WordPress query. Will instead try to parse the URL
- * or query in an attempt to figure the correct page to go to.
- *
- * @since 2.3.0
- *
- * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
- * @global bool $is_IIS
- * @global WP_Query $wp_query WordPress Query object.
- * @global wpdb $wpdb WordPress database abstraction object.
- * @global WP $wp Current WordPress environment instance.
- *
- * @param string $requested_url Optional. The URL that was requested, used to
- * figure if redirect is needed.
- * @param bool $do_redirect Optional. Redirect to the new URL.
- * @return string|void The string of the URL, if redirect needed.
- */
- function redirect_canonical( $requested_url = null, $do_redirect = true ) {
- global $wp_rewrite, $is_IIS, $wp_query, $wpdb, $wp;
- if ( isset( $_SERVER['REQUEST_METHOD'] ) && ! in_array( strtoupper( $_SERVER['REQUEST_METHOD'] ), array( 'GET', 'HEAD' ), true ) ) {
- return;
- }
- // If we're not in wp-admin and the post has been published and preview nonce
- // is non-existent or invalid then no need for preview in query.
- if ( is_preview() && get_query_var( 'p' ) && 'publish' === get_post_status( get_query_var( 'p' ) ) ) {
- if ( ! isset( $_GET['preview_id'] )
- || ! isset( $_GET['preview_nonce'] )
- || ! wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . (int) $_GET['preview_id'] )
- ) {
- $wp_query->is_preview = false;
- }
- }
- if ( is_admin() || is_search() || is_preview() || is_trackback()
- || is_robots() || is_favicon()
- || ( $is_IIS && ! iis7_supports_permalinks() )
- ) {
- return;
- }
- if ( ! $requested_url && isset( $_SERVER['HTTP_HOST'] ) ) {
- // Build the URL in the address bar.
- $requested_url = is_ssl() ? 'https://' : 'http://';
- $requested_url .= $_SERVER['HTTP_HOST'];
- $requested_url .= $_SERVER['REQUEST_URI'];
- }
- $original = parse_url( $requested_url );
- if ( false === $original ) {
- return;
- }
- $redirect = $original;
- $redirect_url = false;
- // Notice fixing.
- if ( ! isset( $redirect['path'] ) ) {
- $redirect['path'] = '';
- }
- if ( ! isset( $redirect['query'] ) ) {
- $redirect['query'] = '';
- }
- /*
- * If the original URL ended with non-breaking spaces, they were almost
- * certainly inserted by accident. Let's remove them, so the reader doesn't
- * see a 404 error with no obvious cause.
- */
- $redirect['path'] = preg_replace( '|(%C2%A0)+$|i', '', $redirect['path'] );
- // It's not a preview, so remove it from URL.
- if ( get_query_var( 'preview' ) ) {
- $redirect['query'] = remove_query_arg( 'preview', $redirect['query'] );
- }
- $post_id = get_query_var( 'p' );
- if ( is_feed() && $post_id ) {
- $redirect_url = get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
- if ( $redirect_url ) {
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type', 'feed' ),
- $redirect_url
- );
- $redirect['path'] = parse_url( $redirect_url, PHP_URL_PATH );
- }
- }
- if ( is_singular() && $wp_query->post_count < 1 && $post_id ) {
- $vars = $wpdb->get_results( $wpdb->prepare( "SELECT post_type, post_parent FROM $wpdb->posts WHERE ID = %d", $post_id ) );
- if ( ! empty( $vars[0] ) ) {
- $vars = $vars[0];
- if ( 'revision' === $vars->post_type && $vars->post_parent > 0 ) {
- $post_id = $vars->post_parent;
- }
- $redirect_url = get_permalink( $post_id );
- if ( $redirect_url ) {
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
- $redirect_url
- );
- }
- }
- }
- // These tests give us a WP-generated permalink.
- if ( is_404() ) {
- // Redirect ?page_id, ?p=, ?attachment_id= to their respective URLs.
- $post_id = max( get_query_var( 'p' ), get_query_var( 'page_id' ), get_query_var( 'attachment_id' ) );
- $redirect_post = $post_id ? get_post( $post_id ) : false;
- if ( $redirect_post ) {
- $post_type_obj = get_post_type_object( $redirect_post->post_type );
- if ( $post_type_obj->public && 'auto-draft' !== $redirect_post->post_status ) {
- $redirect_url = get_permalink( $redirect_post );
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
- $redirect_url
- );
- }
- }
- $year = get_query_var( 'year' );
- $month = get_query_var( 'monthnum' );
- $day = get_query_var( 'day' );
- if ( $year && $month && $day ) {
- $date = sprintf( '%04d-%02d-%02d', $year, $month, $day );
- if ( ! wp_checkdate( $month, $day, $year, $date ) ) {
- $redirect_url = get_month_link( $year, $month );
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'year', 'monthnum', 'day' ),
- $redirect_url
- );
- }
- } elseif ( $year && $month && $month > 12 ) {
- $redirect_url = get_year_link( $year );
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'year', 'monthnum' ),
- $redirect_url
- );
- }
- // Strip off non-existing <!--nextpage--> links from single posts or pages.
- if ( get_query_var( 'page' ) ) {
- $post_id = 0;
- if ( $wp_query->queried_object instanceof WP_Post ) {
- $post_id = $wp_query->queried_object->ID;
- } elseif ( $wp_query->post ) {
- $post_id = $wp_query->post->ID;
- }
- if ( $post_id ) {
- $redirect_url = get_permalink( $post_id );
- $redirect['path'] = rtrim( $redirect['path'], (int) get_query_var( 'page' ) . '/' );
- $redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
- }
- }
- if ( ! $redirect_url ) {
- $redirect_url = redirect_guess_404_permalink();
- if ( $redirect_url ) {
- $redirect['query'] = _remove_qs_args_if_not_in_url(
- $redirect['query'],
- array( 'page', 'feed', 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
- $redirect_url
- );
- }
- }
- } elseif ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) {
- // Rewriting of old ?p=X, ?m=2004, ?m=200401, ?m=20040101.
- if ( is_attachment()
- && ! array_diff( array_keys( $wp->query_vars ), array( 'attachment', 'attachment_id' ) )
- && ! $redirect_url
- ) {
- if ( ! empty( $_GET['attachment_id'] ) ) {
- $redirect_url = get_attachment_link( get_query_var( 'attachment_id' ) );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'attachment_id', $redirect['query'] );
- }
- } else {
- $redirect_url = get_attachment_link();
- }
- } elseif ( is_single() && ! empty( $_GET['p'] ) && ! $redirect_url ) {
- $redirect_url = get_permalink( get_query_var( 'p' ) );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( array( 'p', 'post_type' ), $redirect['query'] );
- }
- } elseif ( is_single() && ! empty( $_GET['name'] ) && ! $redirect_url ) {
- $redirect_url = get_permalink( $wp_query->get_queried_object_id() );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'name', $redirect['query'] );
- }
- } elseif ( is_page() && ! empty( $_GET['page_id'] ) && ! $redirect_url ) {
- $redirect_url = get_permalink( get_query_var( 'page_id' ) );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'page_id', $redirect['query'] );
- }
- } elseif ( is_page() && ! is_feed() && ! $redirect_url
- && 'page' === get_option( 'show_on_front' ) && get_queried_object_id() === (int) get_option( 'page_on_front' )
- ) {
- $redirect_url = home_url( '/' );
- } elseif ( is_home() && ! empty( $_GET['page_id'] ) && ! $redirect_url
- && 'page' === get_option( 'show_on_front' ) && get_query_var( 'page_id' ) === (int) get_option( 'page_for_posts' )
- ) {
- $redirect_url = get_permalink( get_option( 'page_for_posts' ) );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'page_id', $redirect['query'] );
- }
- } elseif ( ! empty( $_GET['m'] ) && ( is_year() || is_month() || is_day() ) ) {
- $m = get_query_var( 'm' );
- switch ( strlen( $m ) ) {
- case 4: // Yearly.
- $redirect_url = get_year_link( $m );
- break;
- case 6: // Monthly.
- $redirect_url = get_month_link( substr( $m, 0, 4 ), substr( $m, 4, 2 ) );
- break;
- case 8: // Daily.
- $redirect_url = get_day_link( substr( $m, 0, 4 ), substr( $m, 4, 2 ), substr( $m, 6, 2 ) );
- break;
- }
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'm', $redirect['query'] );
- }
- // Now moving on to non ?m=X year/month/day links.
- } elseif ( is_date() ) {
- $year = get_query_var( 'year' );
- $month = get_query_var( 'monthnum' );
- $day = get_query_var( 'day' );
- if ( is_day() && $year && $month && ! empty( $_GET['day'] ) ) {
- $redirect_url = get_day_link( $year, $month, $day );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( array( 'year', 'monthnum', 'day' ), $redirect['query'] );
- }
- } elseif ( is_month() && $year && ! empty( $_GET['monthnum'] ) ) {
- $redirect_url = get_month_link( $year, $month );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( array( 'year', 'monthnum' ), $redirect['query'] );
- }
- } elseif ( is_year() && ! empty( $_GET['year'] ) ) {
- $redirect_url = get_year_link( $year );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'year', $redirect['query'] );
- }
- }
- } elseif ( is_author() && ! empty( $_GET['author'] ) && preg_match( '|^[0-9]+$|', $_GET['author'] ) ) {
- $author = get_userdata( get_query_var( 'author' ) );
- if ( false !== $author
- && $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE $wpdb->posts.post_author = %d AND $wpdb->posts.post_status = 'publish' LIMIT 1", $author->ID ) )
- ) {
- $redirect_url = get_author_posts_url( $author->ID, $author->user_nicename );
- if ( $redirect_url ) {
- $redirect['query'] = remove_query_arg( 'author', $redirect['query'] );
- }
- }
- } elseif ( is_category() || is_tag() || is_tax() ) { // Terms (tags/categories).
- $term_count = 0;
- foreach ( $wp_query->tax_query->queried_terms as $tax_query ) {
- $term_count += count( $tax_query['terms'] );
- }
- $obj = $wp_query->get_queried_object();
- if ( $term_count <= 1 && ! empty( $obj->term_id ) ) {
- $tax_url = get_term_link( (int) $obj->term_id, $obj->taxonomy );
- if ( $tax_url && ! is_wp_error( $tax_url ) ) {
- if ( ! empty( $redirect['query'] ) ) {
- // Strip taxonomy query vars off the URL.
- $qv_remove = array( 'term', 'taxonomy' );
- if ( is_category() ) {
- $qv_remove[] = 'category_name';
- $qv_remove[] = 'cat';
- } elseif ( is_tag() ) {
- $qv_remove[] = 'tag';
- $qv_remove[] = 'tag_id';
- } else {
- // Custom taxonomies will have a custom query var, remove those too.
- $tax_obj = get_taxonomy( $obj->taxonomy );
- if ( false !== $tax_obj->query_var ) {
- $qv_remove[] = $tax_obj->query_var;
- }
- }
- $rewrite_vars = array_diff( array_keys( $wp_query->query ), array_keys( $_GET ) );
- // Check to see if all the query vars are coming from the rewrite, none are set via $_GET.
- if ( ! array_diff( $rewrite_vars, array_keys( $_GET ) ) ) {
- // Remove all of the per-tax query vars.
- $redirect['query'] = remove_query_arg( $qv_remove, $redirect['query'] );
- // Create the destination URL for this taxonomy.
- $tax_url = parse_url( $tax_url );
- if ( ! empty( $tax_url['query'] ) ) {
- // Taxonomy accessible via ?taxonomy=...&term=... or any custom query var.
- parse_str( $tax_url['query'], $query_vars );
- $redirect['query'] = add_query_arg( $query_vars, $redirect['query'] );
- } else {
- // Taxonomy is accessible via a "pretty URL".
- $redirect['path'] = $tax_url['path'];
- }
- } else {
- // Some query vars are set via $_GET. Unset those from $_GET that exist via the rewrite.
- foreach ( $qv_remove as $_qv ) {
- if ( isset( $rewrite_vars[ $_qv ] ) ) {
- $redirect['query'] = remove_query_arg( $_qv, $redirect['query'] );
- }
- }
- }
- }
- }
- }
- } elseif ( is_single() && strpos( $wp_rewrite->permalink_structure, '%category%' ) !== false ) {
- $category_name = get_query_var( 'category_name' );
- if ( $category_name ) {
- $category = get_category_by_path( $category_name );
- if ( ! $category || is_wp_error( $category )
- || ! has_term( $category->term_id, 'category', $wp_query->get_queried_object_id() )
- ) {
- $redirect_url = get_permalink( $wp_query->get_queried_object_id() );
- }
- }
- }
- // Post paging.
- if ( is_singular() && get_query_var( 'page' ) ) {
- $page = get_query_var( 'page' );
- if ( ! $redirect_url ) {
- $redirect_url = get_permalink( get_queried_object_id() );
- }
- if ( $page > 1 ) {
- $redirect_url = trailingslashit( $redirect_url );
- if ( is_front_page() ) {
- $redirect_url .= user_trailingslashit( "$wp_rewrite->pagination_base/$page", 'paged' );
- } else {
- $redirect_url .= user_trailingslashit( $page, 'single_paged' );
- }
- }
- $redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
- }
- // Paging and feeds.
- if ( get_query_var( 'paged' ) || is_feed() || get_query_var( 'cpage' ) ) {
- $paged = get_query_var( 'paged' );
- $feed = get_query_var( 'feed' );
- $cpage = get_query_var( 'cpage' );
- while ( preg_match( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", $redirect['path'] )
- || preg_match( '#/(comments/?)?(feed|rss2?|rdf|atom)(/+)?$#', $redirect['path'] )
- || preg_match( "#/{$wp_rewrite->comments_pagination_base}-[0-9]+(/+)?$#", $redirect['path'] )
- ) {
- // Strip off any existing paging.
- $redirect['path'] = preg_replace( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", '/', $redirect['path'] );
- // Strip off feed endings.
- $redirect['path'] = preg_replace( '#/(comments/?)?(feed|rss2?|rdf|atom)(/+|$)#', '/', $redirect['path'] );
- // Strip off any existing comment paging.
- $redirect['path'] = preg_replace( "#/{$wp_rewrite->comments_pagination_base}-[0-9]+?(/+)?$#", '/', $redirect['path'] );
- }
- $addl_path = '';
- $default_feed = get_default_feed();
- if ( is_feed() && in_array( $feed, $wp_rewrite->feeds, true ) ) {
- $addl_path = ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '';
- if ( ! is_singular() && get_query_var( 'withcomments' ) ) {
- $addl_path .= 'comments/';
- }
- if ( ( 'rss' === $default_feed && 'feed' === $feed ) || 'rss' === $feed ) {
- $format = ( 'rss2' === $default_feed ) ? '' : 'rss2';
- } else {
- $format = ( $default_feed === $feed || 'feed' === $feed ) ? '' : $feed;
- }
- $addl_path .= user_trailingslashit( 'feed/' . $format, 'feed' );
- $redirect['query'] = remove_query_arg( 'feed', $redirect['query'] );
- } elseif ( is_feed() && 'old' === $feed ) {
- $old_feed_files = array(
- 'wp-atom.php' => 'atom',
- 'wp-commentsrss2.php' => 'comments_rss2',
- 'wp-feed.php' => $default_feed,
- 'wp-rdf.php' => 'rdf',
- 'wp-rss.php' => 'rss2',
- 'wp-rss2.php' => 'rss2',
- );
- if ( isset( $old_feed_files[ basename( $redirect['path'] ) ] ) ) {
- $redirect_url = get_feed_link( $old_feed_files[ basename( $redirect['path'] ) ] );
- wp_redirect( $redirect_url, 301 );
- die();
- }
- }
- if ( $paged > 0 ) {
- $redirect['query'] = remove_query_arg( 'paged', $redirect['query'] );
- if ( ! is_feed() ) {
- if ( ! is_single() ) {
- $addl_path = ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '';
- if ( $paged > 1 ) {
- $addl_path .= user_trailingslashit( "$wp_rewrite->pagination_base/$paged", 'paged' );
- }
- }
- } elseif ( $paged > 1 ) {
- $redirect['query'] = add_query_arg( 'paged', $paged, $redirect['query'] );
- }
- }
- $default_comments_page = get_option( 'default_comments_page' );
- if ( get_option( 'page_comments' )
- && ( 'newest' === $default_comments_page && $cpage > 0
- || 'newest' !== $default_comments_page && $cpage > 1 )
- ) {
- $addl_path = ( ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '' );
- $addl_path .= user_trailingslashit( $wp_rewrite->comments_pagination_base . '-' . $cpage, 'commentpaged' );
- $redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] );
- }
- // Strip off trailing /index.php/.
- $redirect['path'] = preg_replace( '|/' . preg_quote( $wp_rewrite->index, '|' ) . '/?$|', '/', $redirect['path'] );
- $redirect['path'] = user_trailingslashit( $redirect['path'] );
- if ( ! empty( $addl_path )
- && $wp_rewrite->using_index_permalinks()
- && strpos( $redirect['path'], '/' . $wp_rewrite->index . '/' ) === false
- ) {
- $redirect['path'] = trailingslashit( $redirect['path'] ) . $wp_rewrite->index . '/';
- }
- if ( ! empty( $addl_path ) ) {
- $redirect['path'] = trailingslashit( $redirect['path'] ) . $addl_path;
- }
- $redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path'];
- }
- if ( 'wp-register.php' === basename( $redirect['path'] ) ) {
- if ( is_multisite() ) {
- /** This filter is documented in wp-login.php */
- $redirect_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );
- } else {
- $redirect_url = wp_registration_url();
- }
- wp_redirect( $redirect_url, 301 );
- die();
- }
- }
- $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
- // Tack on any additional query vars.
- if ( $redirect_url && ! empty( $redirect['query'] ) ) {
- parse_str( $redirect['query'], $_parsed_query );
- $redirect = parse_url( $redirect_url );
- if ( ! empty( $_parsed_query['name'] ) && ! empty( $redirect['query'] ) ) {
- parse_str( $redirect['query'], $_parsed_redirect_query );
- if ( empty( $_parsed_redirect_query['name'] ) ) {
- unset( $_parsed_query['name'] );
- }
- }
- $_parsed_query = array_combine(
- rawurlencode_deep( array_keys( $_parsed_query ) ),
- rawurlencode_deep( array_values( $_parsed_query ) )
- );
- $redirect_url = add_query_arg( $_parsed_query, $redirect_url );
- }
- if ( $redirect_url ) {
- $redirect = parse_url( $redirect_url );
- }
- // www.example.com vs. example.com
- $user_home = parse_url( home_url() );
- if ( ! empty( $user_home['host'] ) ) {
- $redirect['host'] = $user_home['host'];
- }
- if ( empty( $user_home['path'] ) ) {
- $user_home['path'] = '/';
- }
- // Handle ports.
- if ( ! empty( $user_home['port'] ) ) {
- $redirect['port'] = $user_home['port'];
- } else {
- unset( $redirect['port'] );
- }
- // Trailing /index.php.
- $redirect['path'] = preg_replace( '|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path'] );
- $punctuation_pattern = implode(
- '|',
- array_map(
- 'preg_quote',
- array(
- ' ',
- '%20', // Space.
- '!',
- '%21', // Exclamation mark.
- '"',
- '%22', // Double quote.
- "'",
- '%27', // Single quote.
- '(',
- '%28', // Opening bracket.
- ')',
- '%29', // Closing bracket.
- ',',
- '%2C', // Comma.
- '.',
- '%2E', // Period.
- ';',
- '%3B', // Semicolon.
- '{',
- '%7B', // Opening curly bracket.
- '}',
- '%7D', // Closing curly bracket.
- '%E2%80%9C', // Opening curly quote.
- '%E2%80%9D', // Closing curly quote.
- )
- )
- );
- // Remove trailing spaces and end punctuation from the path.
- $redirect['path'] = preg_replace( "#($punctuation_pattern)+$#", '', $redirect['path'] );
- if ( ! empty( $redirect['query'] ) ) {
- // Remove trailing spaces and end punctuation from certain terminating query string args.
- $redirect['query'] = preg_replace( "#((^|&)(p|page_id|cat|tag)=[^&]*?)($punctuation_pattern)+$#", '$1', $redirect['query'] );
- // Clean up empty query strings.
- $redirect['query'] = trim( preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query'] ), '&' );
- // Redirect obsolete feeds.
- $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] );
- // Remove redundant leading ampersands.
- $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
- }
- // Strip /index.php/ when we're not using PATHINFO permalinks.
- if ( ! $wp_rewrite->using_index_permalinks() ) {
- $redirect['path'] = str_replace( '/' . $wp_rewrite->index . '/', '/', $redirect['path'] );
- }
- // Trailing slashes.
- if ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks()
- && ! is_404() && ( ! is_front_page() || is_front_page() && get_query_var( 'paged' ) > 1 )
- ) {
- $user_ts_type = '';
- if ( get_query_var( 'paged' ) > 0 ) {
- $user_ts_type = 'paged';
- } else {
- foreach ( array( 'single', 'category', 'page', 'day', 'month', 'year', 'home' ) as $type ) {
- $func = 'is_' . $type;
- if ( call_user_func( $func ) ) {
- $user_ts_type = $type;
- break;
- }
- }
- }
- $redirect['path'] = user_trailingslashit( $redirect['path'], $user_ts_type );
- } elseif ( is_front_page() ) {
- $redirect['path'] = trailingslashit( $redirect['path'] );
- }
- // Strip multiple slashes out of the URL.
- if ( strpos( $redirect['path'], '//' ) > -1 ) {
- $redirect['path'] = preg_replace( '|/+|', '/', $redirect['path'] );
- }
- // Always trailing slash the Front Page URL.
- if ( trailingslashit( $redirect['path'] ) === trailingslashit( $user_home['path'] ) ) {
- $redirect['path'] = trailingslashit( $redirect['path'] );
- }
- $original_host_low = strtolower( $original['host'] );
- $redirect_host_low = strtolower( $redirect['host'] );
- // Ignore differences in host capitalization, as this can lead to infinite redirects.
- // Only redirect no-www <=> yes-www.
- if ( $original_host_low === $redirect_host_low
- || ( 'www.' . $original_host_low !== $redirect_host_low
- && 'www.' . $redirect_host_low !== $original_host_low )
- ) {
- $redirect['host'] = $original['host'];
- }
- $compare_original = array( $original['host'], $original['path'] );
- if ( ! empty( $original['port'] ) ) {
- $compare_original[] = $original['port'];
- }
- if ( ! empty( $original['query'] ) ) {
- $compare_original[] = $original['query'];
- }
- $compare_redirect = array( $redirect['host'], $redirect['path'] );
- if ( ! empty( $redirect['port'] ) ) {
- $compare_redirect[] = $redirect['port'];
- }
- if ( ! empty( $redirect['query'] ) ) {
- $compare_redirect[] = $redirect['query'];
- }
- if ( $compare_original !== $compare_redirect ) {
- $redirect_url = $redirect['scheme'] . '://' . $redirect['host'];
- if ( ! empty( $redirect['port'] ) ) {
- $redirect_url .= ':' . $redirect['port'];
- }
- $redirect_url .= $redirect['path'];
- if ( ! empty( $redirect['query'] ) ) {
- $redirect_url .= '?' . $redirect['query'];
- }
- }
- if ( ! $redirect_url || $redirect_url === $requested_url ) {
- return;
- }
- // Hex encoded octets are case-insensitive.
- if ( false !== strpos( $requested_url, '%' ) ) {
- if ( ! function_exists( 'lowercase_octets' ) ) {
- /**
- * Converts the first hex-encoded octet match to lowercase.
- *
- * @since 3.1.0
- * @ignore
- *
- * @param array $matches Hex-encoded octet matches for the requested URL.
- * @return string Lowercased version of the first match.
- */
- function lowercase_octets( $matches ) {
- return strtolower( $matches[0] );
- }
- }
- $requested_url = preg_replace_callback( '|%[a-fA-F0-9][a-fA-F0-9]|', 'lowercase_octets', $requested_url );
- }
- /**
- * Filters the canonical redirect URL.
- *
- * Returning false to this filter will cancel the redirect.
- *
- * @since 2.3.0
- *
- * @param string $redirect_url The redirect URL.
- * @param string $requested_url The requested URL.
- */
- $redirect_url = apply_filters( 'redirect_canonical', $redirect_url, $requested_url );
- // Yes, again -- in case the filter aborted the request.
- if ( ! $redirect_url || strip_fragment_from_url( $redirect_url ) === strip_fragment_from_url( $requested_url ) ) {
- return;
- }
- if ( $do_redirect ) {
- // Protect against chained redirects.
- if ( ! redirect_canonical( $redirect_url, false ) ) {
- wp_redirect( $redirect_url, 301 );
- exit();
- } else {
- // Debug.
- // die("1: $redirect_url<br />2: " . redirect_canonical( $redirect_url, false ) );
- return;
- }
- } else {
- return $redirect_url;
- }
- }
- /**
- * Removes arguments from a query string if they are not present in a URL
- * DO NOT use this in plugin code.
- *
- * @since 3.4.0
- * @access private
- *
- * @param string $query_string
- * @param array $args_to_check
- * @param string $url
- * @return string The altered query string
- */
- function _remove_qs_args_if_not_in_url( $query_string, array $args_to_check, $url ) {
- $parsed_url = parse_url( $url );
- if ( ! empty( $parsed_url['query'] ) ) {
- parse_str( $parsed_url['query'], $parsed_query );
- foreach ( $args_to_check as $qv ) {
- if ( ! isset( $parsed_query[ $qv ] ) ) {
- $query_string = remove_query_arg( $qv, $query_string );
- }
- }
- } else {
- $query_string = remove_query_arg( $args_to_check, $query_string );
- }
- return $query_string;
- }
- /**
- * Strips the #fragment from a URL, if one is present.
- *
- * @since 4.4.0
- *
- * @param string $url The URL to strip.
- * @return string The altered URL.
- */
- function strip_fragment_from_url( $url ) {
- $parsed_url = parse_url( $url );
- if ( ! empty( $parsed_url['host'] ) ) {
- // This mirrors code in redirect_canonical(). It does not handle every case.
- $url = $parsed_url['scheme'] . '://' . $parsed_url['host'];
- if ( ! empty( $parsed_url['port'] ) ) {
- $url .= ':' . $parsed_url['port'];
- }
- if ( ! empty( $parsed_url['path'] ) ) {
- $url .= $parsed_url['path'];
- }
- if ( ! empty( $parsed_url['query'] ) ) {
- $url .= '?' . $parsed_url['query'];
- }
- }
- return $url;
- }
- /**
- * Attempts to guess the correct URL based on query vars
- *
- * @since 2.3.0
- *
- * @global wpdb $wpdb WordPress database abstraction object.
- *
- * @return string|false The correct URL if one is found. False on failure.
- */
- function redirect_guess_404_permalink() {
- global $wpdb;
- if ( get_query_var( 'name' ) ) {
- $where = $wpdb->prepare( 'post_name LIKE %s', $wpdb->esc_like( get_query_var( 'name' ) ) . '%' );
- // If any of post_type, year, monthnum, or day are set, use them to refine the query.
- if ( get_query_var( 'post_type' ) ) {
- $where .= $wpdb->prepare( ' AND post_type = %s', get_query_var( 'post_type' ) );
- } else {
- $where .= " AND post_type IN ('" . implode( "', '", get_post_types( array( 'public' => true ) ) ) . "')";
- }
- if ( get_query_var( 'year' ) ) {
- $where .= $wpdb->prepare( ' AND YEAR(post_date) = %d', get_query_var( 'year' ) );
- }
- if ( get_query_var( 'monthnum' ) ) {
- $where .= $wpdb->prepare( ' AND MONTH(post_date) = %d', get_query_var( 'monthnum' ) );
- }
- if ( get_query_var( 'day' ) ) {
- $where .= $wpdb->prepare( ' AND DAYOFMONTH(post_date) = %d', get_query_var( 'day' ) );
- }
- // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
- $post_id = $wpdb->get_var( "SELECT ID FROM $wpdb->posts WHERE $where AND post_status = 'publish'" );
- if ( ! $post_id ) {
- return false;
- }
- if ( get_query_var( 'feed' ) ) {
- return get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
- } elseif ( get_query_var( 'page' ) > 1 ) {
- return trailingslashit( get_permalink( $post_id ) ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
- } else {
- return get_permalink( $post_id );
- }
- }
- return false;
- }
- /**
- * Redirects a variety of shorthand URLs to the admin.
- *
- * If a user visits example.com/admin, they'll be redirected to /wp-admin.
- * Visiting /login redirects to /wp-login.php, and so on.
- *
- * @since 3.4.0
- *
- * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
- */
- function wp_redirect_admin_locations() {
- global $wp_rewrite;
- if ( ! ( is_404() && $wp_rewrite->using_permalinks() ) ) {
- return;
- }
- $admins = array(
- home_url( 'wp-admin', 'relative' ),
- home_url( 'dashboard', 'relative' ),
- home_url( 'admin', 'relative' ),
- site_url( 'dashboard', 'relative' ),
- site_url( 'admin', 'relative' ),
- );
- if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $admins, true ) ) {
- wp_redirect( admin_url() );
- exit;
- }
- $logins = array(
- home_url( 'wp-login.php', 'relative' ),
- home_url( 'login', 'relative' ),
- site_url( 'login', 'relative' ),
- );
- if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $logins, true ) ) {
- wp_redirect( wp_login_url() );
- exit;
- }
- }