| 1 | <?php
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| 2 | /**
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| 3 | * Canonical API to handle WordPress Redirecting
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| 4 | *
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| 5 | * Based on "Permalink Redirect" from Scott Yang and "Enforce www. Preference"
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| 6 | * by Mark Jaquith
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| 7 | *
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| 8 | * @package WordPress
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| 9 | * @since 2.3.0
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| 10 | */
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| 11 |
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| 12 | /**
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| 13 | * Redirects incoming links to the proper URL based on the site url.
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| 14 | *
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| 15 | * Search engines consider www.somedomain.com and somedomain.com to be two
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| 16 | * different URLs when they both go to the same location. This SEO enhancement
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| 17 | * prevents penalty for duplicate content by redirecting all incoming links to
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| 18 | * one or the other.
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| 19 | *
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| 20 | * Prevents redirection for feeds, trackbacks, searches, comment popup, and
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| 21 | * admin URLs. Does not redirect on non-pretty-permalink-supporting IIS 7+,
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| 22 | * page/post previews, WP admin, Trackbacks, robots.txt, searches, or on POST
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| 23 | * requests.
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| 24 | *
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| 25 | * Will also attempt to find the correct link when a user enters a URL that does
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| 26 | * not exist based on exact WordPress query. Will instead try to parse the URL
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| 27 | * or query in an attempt to figure the correct page to go to.
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| 28 | *
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| 29 | * @since 2.3.0
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| 30 | *
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| 31 | * @global WP_Rewrite $wp_rewrite
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| 32 | * @global bool $is_IIS
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| 33 | * @global WP_Query $wp_query
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| 34 | * @global wpdb $wpdb
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| 35 | *
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| 36 | * @param string $requested_url Optional. The URL that was requested, used to
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| 37 | * figure if redirect is needed.
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| 38 | * @param bool $do_redirect Optional. Redirect to the new URL.
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| 39 | * @return string|void The string of the URL, if redirect needed.
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| 40 | */
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| 41 | function redirect_canonical( $requested_url = null, $do_redirect = true ) {
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| 42 | global $wp_rewrite, $is_IIS, $wp_query, $wpdb;
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| 43 |
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| 44 | if ( isset( $_SERVER['REQUEST_METHOD'] ) && ! in_array( strtoupper( $_SERVER['REQUEST_METHOD'] ), array( 'GET', 'HEAD' ) ) ) {
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| 45 | return;
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| 46 | }
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| 47 |
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| 48 | // If we're not in wp-admin and the post has been published and preview nonce
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| 49 | // is non-existent or invalid then no need for preview in query
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| 50 | if ( is_preview() && get_query_var( 'p' ) && 'publish' == get_post_status( get_query_var( 'p' ) ) ) {
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| 51 | if ( ! isset( $_GET['preview_id'] )
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| 52 | || ! isset( $_GET['preview_nonce'] )
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| 53 | || ! wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . (int) $_GET['preview_id'] ) ) {
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| 54 | $wp_query->is_preview = false;
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| 55 | }
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| 56 | }
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| 57 |
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| 58 | if ( is_trackback() || is_search() || is_comments_popup() || is_admin() || is_preview() || is_robots() || ( $is_IIS && !iis7_supports_permalinks() ) ) {
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| 59 | return;
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| 60 | }
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| 61 |
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| 62 | if ( !$requested_url ) {
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| 63 | // if ( ! $requested_url && isset( $_SERVER['HTTP_HOST'] ) ) {
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| 64 | // build the URL in the address bar
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| 65 | $requested_url = is_ssl() ? 'https://' : 'http://';
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| 66 | $requested_url .= $_SERVER['HTTP_HOST'];
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| 67 | $requested_url .= $_SERVER['REQUEST_URI'];
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| 68 |
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| 69 | }
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| 70 |
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| 71 | $original = @parse_url($requested_url);
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| 72 | if ( false === $original )
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| 73 | return;
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| 74 |
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| 75 | // Some PHP setups turn requests for / into /index.php in REQUEST_URI
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| 76 | // See: https://core.trac.wordpress.org/ticket/5017
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| 77 | // See: https://core.trac.wordpress.org/ticket/7173
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| 78 | // Disabled, for now:
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| 79 | // $original['path'] = preg_replace('|/index\.php$|', '/', $original['path']);
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| 80 |
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| 81 | $redirect = $original;
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| 82 | $redirect_url = false;
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| 83 |
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| 84 | // Notice fixing
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| 85 | if ( !isset($redirect['path']) )
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| 86 | $redirect['path'] = '';
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| 87 | if ( !isset($redirect['query']) )
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| 88 | $redirect['query'] = '';
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| 89 |
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| 90 | // If the original URL ended with non-breaking spaces, they were almost
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| 91 | // certainly inserted by accident. Let's remove them, so the reader doesn't
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| 92 | // see a 404 error with no obvious cause.
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| 93 | $redirect['path'] = preg_replace( '|(%C2%A0)+$|i', '', $redirect['path'] );
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| 94 |
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| 95 | // It's not a preview, so remove it from URL
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| 96 | if ( get_query_var( 'preview' ) ) {
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| 97 | $redirect['query'] = remove_query_arg( 'preview', $redirect['query'] );
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| 98 | }
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| 99 |
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| 100 | if ( is_feed() && ( $id = get_query_var( 'p' ) ) ) {
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| 101 | if ( $redirect_url = get_post_comments_feed_link( $id, get_query_var( 'feed' ) ) ) {
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| 102 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type', 'feed'), $redirect_url );
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| 103 | $redirect['path'] = parse_url( $redirect_url, PHP_URL_PATH );
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| 104 | }
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| 105 | }
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| 106 |
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| 107 | if ( is_singular() && 1 > $wp_query->post_count && ($id = get_query_var('p')) ) {
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| 108 |
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| 109 | $vars = $wpdb->get_results( $wpdb->prepare("SELECT post_type, post_parent FROM $wpdb->posts WHERE ID = %d", $id) );
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| 110 |
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| 111 | if ( isset($vars[0]) && $vars = $vars[0] ) {
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| 112 | if ( 'revision' == $vars->post_type && $vars->post_parent > 0 )
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| 113 | $id = $vars->post_parent;
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| 114 |
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| 115 | if ( $redirect_url = get_permalink($id) )
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| 116 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url );
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| 117 | }
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| 118 | }
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| 119 |
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| 120 | // These tests give us a WP-generated permalink
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| 121 | if ( is_404() ) {
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| 122 |
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| 123 | // Redirect ?page_id, ?p=, ?attachment_id= to their respective url's
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| 124 | $id = max( get_query_var('p'), get_query_var('page_id'), get_query_var('attachment_id') );
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| 125 | if ( $id && $redirect_post = get_post($id) ) {
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| 126 | $post_type_obj = get_post_type_object($redirect_post->post_type);
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| 127 | if ( $post_type_obj->public ) {
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| 128 | $redirect_url = get_permalink($redirect_post);
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| 129 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url );
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | if ( get_query_var( 'day' ) && get_query_var( 'monthnum' ) && get_query_var( 'year' ) ) {
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| 134 | $year = get_query_var( 'year' );
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| 135 | $month = get_query_var( 'monthnum' );
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| 136 | $day = get_query_var( 'day' );
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| 137 | $date = sprintf( '%04d-%02d-%02d', $year, $month, $day );
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| 138 | if ( ! wp_checkdate( $month, $day, $year, $date ) ) {
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| 139 | $redirect_url = get_month_link( $year, $month );
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| 140 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'year', 'monthnum', 'day' ), $redirect_url );
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| 141 | }
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| 142 | } elseif ( get_query_var( 'monthnum' ) && get_query_var( 'year' ) && 12 < get_query_var( 'monthnum' ) ) {
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| 143 | $redirect_url = get_year_link( get_query_var( 'year' ) );
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| 144 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'year', 'monthnum' ), $redirect_url );
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| 145 | }
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| 146 |
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| 147 | if ( ! $redirect_url ) {
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| 148 | if ( $redirect_url = redirect_guess_404_permalink() ) {
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| 149 | $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'page', 'feed', 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url );
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| 150 | }
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| 151 | }
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| 152 |
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| 153 | } elseif ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) {
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| 154 | // rewriting of old ?p=X, ?m=2004, ?m=200401, ?m=20040101
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| 155 | if ( is_attachment() && !empty($_GET['attachment_id']) && ! $redirect_url ) {
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| 156 | if ( $redirect_url = get_attachment_link(get_query_var('attachment_id')) )
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| 157 | $redirect['query'] = remove_query_arg('attachment_id', $redirect['query']);
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| 158 | } elseif ( is_single() && !empty($_GET['p']) && ! $redirect_url ) {
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| 159 | if ( $redirect_url = get_permalink(get_query_var('p')) )
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| 160 | $redirect['query'] = remove_query_arg(array('p', 'post_type'), $redirect['query']);
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| 161 | } elseif ( is_single() && !empty($_GET['name']) && ! $redirect_url ) {
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| 162 | if ( $redirect_url = get_permalink( $wp_query->get_queried_object_id() ) )
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| 163 | $redirect['query'] = remove_query_arg('name', $redirect['query']);
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| 164 | } elseif ( is_page() && !empty($_GET['page_id']) && ! $redirect_url ) {
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| 165 | if ( $redirect_url = get_permalink(get_query_var('page_id')) )
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| 166 | $redirect['query'] = remove_query_arg('page_id', $redirect['query']);
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| 167 | } elseif ( is_page() && !is_feed() && isset($wp_query->queried_object) && 'page' == get_option('show_on_front') && $wp_query->queried_object->ID == get_option('page_on_front') && ! $redirect_url ) {
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| 168 | $redirect_url = home_url('/');
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| 169 | } elseif ( is_home() && !empty($_GET['page_id']) && 'page' == get_option('show_on_front') && get_query_var('page_id') == get_option('page_for_posts') && ! $redirect_url ) {
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| 170 | if ( $redirect_url = get_permalink(get_option('page_for_posts')) )
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| 171 | $redirect['query'] = remove_query_arg('page_id', $redirect['query']);
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| 172 | } elseif ( !empty($_GET['m']) && ( is_year() || is_month() || is_day() ) ) {
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| 173 | $m = get_query_var('m');
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| 174 | switch ( strlen($m) ) {
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| 175 | case 4: // Yearly
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| 176 | $redirect_url = get_year_link($m);
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| 177 | break;
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| 178 | case 6: // Monthly
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| 179 | $redirect_url = get_month_link( substr($m, 0, 4), substr($m, 4, 2) );
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| 180 | break;
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| 181 | case 8: // Daily
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| 182 | $redirect_url = get_day_link(substr($m, 0, 4), substr($m, 4, 2), substr($m, 6, 2));
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| 183 | break;
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| 184 | }
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| 185 | if ( $redirect_url )
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| 186 | $redirect['query'] = remove_query_arg('m', $redirect['query']);
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| 187 | // now moving on to non ?m=X year/month/day links
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| 188 | } elseif ( is_day() && get_query_var('year') && get_query_var('monthnum') && !empty($_GET['day']) ) {
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| 189 | if ( $redirect_url = get_day_link(get_query_var('year'), get_query_var('monthnum'), get_query_var('day')) )
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| 190 | $redirect['query'] = remove_query_arg(array('year', 'monthnum', 'day'), $redirect['query']);
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| 191 | } elseif ( is_month() && get_query_var('year') && !empty($_GET['monthnum']) ) {
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| 192 | if ( $redirect_url = get_month_link(get_query_var('year'), get_query_var('monthnum')) )
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| 193 | $redirect['query'] = remove_query_arg(array('year', 'monthnum'), $redirect['query']);
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| 194 | } elseif ( is_year() && !empty($_GET['year']) ) {
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| 195 | if ( $redirect_url = get_year_link(get_query_var('year')) )
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| 196 | $redirect['query'] = remove_query_arg('year', $redirect['query']);
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| 197 | } elseif ( is_author() && !empty($_GET['author']) && preg_match( '|^[0-9]+$|', $_GET['author'] ) ) {
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| 198 | $author = get_userdata(get_query_var('author'));
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| 199 | 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 ) ) ) {
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| 200 | if ( $redirect_url = get_author_posts_url($author->ID, $author->user_nicename) )
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| 201 | $redirect['query'] = remove_query_arg('author', $redirect['query']);
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| 202 | }
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| 203 | } elseif ( is_category() || is_tag() || is_tax() ) { // Terms (Tags/categories)
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| 204 |
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| 205 | $term_count = 0;
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| 206 | foreach ( $wp_query->tax_query->queried_terms as $tax_query )
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| 207 | $term_count += count( $tax_query['terms'] );
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| 208 |
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| 209 | $obj = $wp_query->get_queried_object();
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| 210 | if ( $term_count <= 1 && !empty($obj->term_id) && ( $tax_url = get_term_link((int)$obj->term_id, $obj->taxonomy) ) && !is_wp_error($tax_url) ) {
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| 211 | if ( !empty($redirect['query']) ) {
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| 212 | // Strip taxonomy query vars off the url.
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| 213 | $qv_remove = array( 'term', 'taxonomy');
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| 214 | if ( is_category() ) {
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| 215 | $qv_remove[] = 'category_name';
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| 216 | $qv_remove[] = 'cat';
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| 217 | } elseif ( is_tag() ) {
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| 218 | $qv_remove[] = 'tag';
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| 219 | $qv_remove[] = 'tag_id';
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| 220 | } else { // Custom taxonomies will have a custom query var, remove those too:
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| 221 | $tax_obj = get_taxonomy( $obj->taxonomy );
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| 222 | if ( false !== $tax_obj->query_var )
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| 223 | $qv_remove[] = $tax_obj->query_var;
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| 224 | }
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| 225 |
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| 226 | $rewrite_vars = array_diff( array_keys($wp_query->query), array_keys($_GET) );
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| 227 |
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| 228 | if ( !array_diff($rewrite_vars, array_keys($_GET)) ) { // Check to see if all the Query vars are coming from the rewrite, none are set via $_GET
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| 229 | $redirect['query'] = remove_query_arg($qv_remove, $redirect['query']); //Remove all of the per-tax qv's
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| 230 |
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| 231 | // Create the destination url for this taxonomy
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| 232 | $tax_url = parse_url($tax_url);
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| 233 | if ( ! empty($tax_url['query']) ) { // Taxonomy accessible via ?taxonomy=..&term=.. or any custom qv..
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| 234 | parse_str($tax_url['query'], $query_vars);
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| 235 | $redirect['query'] = add_query_arg($query_vars, $redirect['query']);
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| 236 | } else { // Taxonomy is accessible via a "pretty-URL"
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| 237 | $redirect['path'] = $tax_url['path'];
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| 238 | }
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| 239 |
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| 240 | } else { // Some query vars are set via $_GET. Unset those from $_GET that exist via the rewrite
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| 241 | foreach ( $qv_remove as $_qv ) {
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| 242 | if ( isset($rewrite_vars[$_qv]) )
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| 243 | $redirect['query'] = remove_query_arg($_qv, $redirect['query']);
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| 244 | }
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| 245 | }
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| 246 | }
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| 247 |
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| 248 | }
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| 249 | } elseif ( is_single() && strpos($wp_rewrite->permalink_structure, '%category%') !== false && $cat = get_query_var( 'category_name' ) ) {
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| 250 | $category = get_category_by_path( $cat );
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| 251 | $post_terms = wp_get_object_terms($wp_query->get_queried_object_id(), 'category', array('fields' => 'tt_ids'));
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| 252 | if ( (!$category || is_wp_error($category)) || ( !is_wp_error($post_terms) && !empty($post_terms) && !in_array($category->term_taxonomy_id, $post_terms) ) )
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| 253 | $redirect_url = get_permalink($wp_query->get_queried_object_id());
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| 254 | }
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| 255 |
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| 256 | // Post Paging
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| 257 | if ( is_singular() && ! is_front_page() && get_query_var('page') ) {
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| 258 | if ( !$redirect_url )
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| 259 | $redirect_url = get_permalink( get_queried_object_id() );
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| 260 | $redirect_url = trailingslashit( $redirect_url ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
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| 261 | $redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
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| 262 | }
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| 263 |
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| 264 | // paging and feeds
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| 265 | if ( get_query_var('paged') || is_feed() || get_query_var('cpage') ) {
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| 266 | while ( preg_match( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", $redirect['path'] ) || preg_match( '#/(comments/?)?(feed|rss|rdf|atom|rss2)(/+)?$#', $redirect['path'] ) || preg_match( "#/{$wp_rewrite->comments_pagination_base}-[0-9]+(/+)?$#", $redirect['path'] ) ) {
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| 267 | // Strip off paging and feed
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| 268 | $redirect['path'] = preg_replace("#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", '/', $redirect['path']); // strip off any existing paging
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| 269 | $redirect['path'] = preg_replace('#/(comments/?)?(feed|rss2?|rdf|atom)(/+|$)#', '/', $redirect['path']); // strip off feed endings
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| 270 | $redirect['path'] = preg_replace("#/{$wp_rewrite->comments_pagination_base}-[0-9]+?(/+)?$#", '/', $redirect['path']); // strip off any existing comment paging
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| 271 | }
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| 272 |
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| 273 | $addl_path = '';
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| 274 | if ( is_feed() && in_array( get_query_var('feed'), $wp_rewrite->feeds ) ) {
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| 275 | $addl_path = !empty( $addl_path ) ? trailingslashit($addl_path) : '';
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| 276 | if ( !is_singular() && get_query_var( 'withcomments' ) )
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| 277 | $addl_path .= 'comments/';
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| 278 | if ( ( 'rss' == get_default_feed() && 'feed' == get_query_var('feed') ) || 'rss' == get_query_var('feed') )
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| 279 | $addl_path .= user_trailingslashit( 'feed/' . ( ( get_default_feed() == 'rss2' ) ? '' : 'rss2' ), 'feed' );
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| 280 | else
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| 281 | $addl_path .= user_trailingslashit( 'feed/' . ( ( get_default_feed() == get_query_var('feed') || 'feed' == get_query_var('feed') ) ? '' : get_query_var('feed') ), 'feed' );
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| 282 | $redirect['query'] = remove_query_arg( 'feed', $redirect['query'] );
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| 283 | } elseif ( is_feed() && 'old' == get_query_var('feed') ) {
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| 284 | $old_feed_files = array(
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| 285 | 'wp-atom.php' => 'atom',
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| 286 | 'wp-commentsrss2.php' => 'comments_rss2',
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| 287 | 'wp-feed.php' => get_default_feed(),
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| 288 | 'wp-rdf.php' => 'rdf',
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| 289 | 'wp-rss.php' => 'rss2',
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| 290 | 'wp-rss2.php' => 'rss2',
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| 291 | );
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| 292 | if ( isset( $old_feed_files[ basename( $redirect['path'] ) ] ) ) {
|
|---|
| 293 | $redirect_url = get_feed_link( $old_feed_files[ basename( $redirect['path'] ) ] );
|
|---|
| 294 | wp_redirect( $redirect_url, 301 );
|
|---|
| 295 | die();
|
|---|
| 296 | }
|
|---|
| 297 | }
|
|---|
| 298 |
|
|---|
| 299 | if ( get_query_var('paged') > 0 ) {
|
|---|
| 300 | $paged = get_query_var('paged');
|
|---|
| 301 | $redirect['query'] = remove_query_arg( 'paged', $redirect['query'] );
|
|---|
| 302 | if ( !is_feed() ) {
|
|---|
| 303 | if ( $paged > 1 && !is_single() ) {
|
|---|
| 304 | $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit("$wp_rewrite->pagination_base/$paged", 'paged');
|
|---|
| 305 | } elseif ( !is_single() ) {
|
|---|
| 306 | $addl_path = !empty( $addl_path ) ? trailingslashit($addl_path) : '';
|
|---|
| 307 | }
|
|---|
| 308 | } elseif ( $paged > 1 ) {
|
|---|
| 309 | $redirect['query'] = add_query_arg( 'paged', $paged, $redirect['query'] );
|
|---|
| 310 | }
|
|---|
| 311 | }
|
|---|
| 312 |
|
|---|
| 313 | if ( get_option('page_comments') && ( ( 'newest' == get_option('default_comments_page') && get_query_var('cpage') > 0 ) || ( 'newest' != get_option('default_comments_page') && get_query_var('cpage') > 1 ) ) ) {
|
|---|
| 314 | $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit( $wp_rewrite->comments_pagination_base . '-' . get_query_var('cpage'), 'commentpaged' );
|
|---|
| 315 | $redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] );
|
|---|
| 316 | }
|
|---|
| 317 |
|
|---|
| 318 | $redirect['path'] = user_trailingslashit( preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/?$|', '/', $redirect['path']) ); // strip off trailing /index.php/
|
|---|
| 319 | if ( !empty( $addl_path ) && $wp_rewrite->using_index_permalinks() && strpos($redirect['path'], '/' . $wp_rewrite->index . '/') === false )
|
|---|
| 320 | $redirect['path'] = trailingslashit($redirect['path']) . $wp_rewrite->index . '/';
|
|---|
| 321 | if ( !empty( $addl_path ) )
|
|---|
| 322 | $redirect['path'] = trailingslashit($redirect['path']) . $addl_path;
|
|---|
| 323 | $redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path'];
|
|---|
| 324 | }
|
|---|
| 325 |
|
|---|
| 326 | if ( 'wp-register.php' == basename( $redirect['path'] ) ) {
|
|---|
| 327 | if ( is_multisite() ) {
|
|---|
| 328 | /** This filter is documented in wp-login.php */
|
|---|
| 329 | $redirect_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );
|
|---|
| 330 | } else {
|
|---|
| 331 | $redirect_url = site_url( 'wp-login.php?action=register' );
|
|---|
| 332 | }
|
|---|
| 333 |
|
|---|
| 334 | wp_redirect( $redirect_url, 301 );
|
|---|
| 335 | die();
|
|---|
| 336 | }
|
|---|
| 337 | }
|
|---|
| 338 |
|
|---|
| 339 | // tack on any additional query vars
|
|---|
| 340 | $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
|
|---|
| 341 | if ( $redirect_url && !empty($redirect['query']) ) {
|
|---|
| 342 | parse_str( $redirect['query'], $_parsed_query );
|
|---|
| 343 | $redirect = @parse_url($redirect_url);
|
|---|
| 344 |
|
|---|
| 345 | if ( ! empty( $_parsed_query['name'] ) && ! empty( $redirect['query'] ) ) {
|
|---|
| 346 | parse_str( $redirect['query'], $_parsed_redirect_query );
|
|---|
| 347 |
|
|---|
| 348 | if ( empty( $_parsed_redirect_query['name'] ) )
|
|---|
| 349 | unset( $_parsed_query['name'] );
|
|---|
| 350 | }
|
|---|
| 351 |
|
|---|
| 352 | $_parsed_query = rawurlencode_deep( $_parsed_query );
|
|---|
| 353 | $redirect_url = add_query_arg( $_parsed_query, $redirect_url );
|
|---|
| 354 | }
|
|---|
| 355 |
|
|---|
| 356 | if ( $redirect_url )
|
|---|
| 357 | $redirect = @parse_url($redirect_url);
|
|---|
| 358 |
|
|---|
| 359 | // www.example.com vs example.com
|
|---|
| 360 | $user_home = @parse_url(home_url());
|
|---|
| 361 | if ( !empty($user_home['host']) )
|
|---|
| 362 | $redirect['host'] = $user_home['host'];
|
|---|
| 363 | if ( empty($user_home['path']) )
|
|---|
| 364 | $user_home['path'] = '/';
|
|---|
| 365 |
|
|---|
| 366 | // Handle ports
|
|---|
| 367 | if ( !empty($user_home['port']) )
|
|---|
| 368 | $redirect['port'] = $user_home['port'];
|
|---|
| 369 | else
|
|---|
| 370 | unset($redirect['port']);
|
|---|
| 371 |
|
|---|
| 372 | // trailing /index.php
|
|---|
| 373 | $redirect['path'] = preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path']);
|
|---|
| 374 |
|
|---|
| 375 | // Remove trailing spaces from the path
|
|---|
| 376 | $redirect['path'] = preg_replace( '#(%20| )+$#', '', $redirect['path'] );
|
|---|
| 377 |
|
|---|
| 378 | if ( !empty( $redirect['query'] ) ) {
|
|---|
| 379 | // Remove trailing spaces from certain terminating query string args
|
|---|
| 380 | $redirect['query'] = preg_replace( '#((p|page_id|cat|tag)=[^&]*?)(%20| )+$#', '$1', $redirect['query'] );
|
|---|
| 381 |
|
|---|
| 382 | // Clean up empty query strings
|
|---|
| 383 | $redirect['query'] = trim(preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query']), '&');
|
|---|
| 384 |
|
|---|
| 385 | // Redirect obsolete feeds
|
|---|
| 386 | $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] );
|
|---|
| 387 |
|
|---|
| 388 | // Remove redundant leading ampersands
|
|---|
| 389 | $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
|
|---|
| 390 | }
|
|---|
| 391 |
|
|---|
| 392 | // strip /index.php/ when we're not using PATHINFO permalinks
|
|---|
| 393 | if ( !$wp_rewrite->using_index_permalinks() )
|
|---|
| 394 | $redirect['path'] = str_replace( '/' . $wp_rewrite->index . '/', '/', $redirect['path'] );
|
|---|
| 395 |
|
|---|
| 396 | // trailing slashes
|
|---|
| 397 | if ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() && !is_404() && (!is_front_page() || ( is_front_page() && (get_query_var('paged') > 1) ) ) ) {
|
|---|
| 398 | $user_ts_type = '';
|
|---|
| 399 | if ( get_query_var('paged') > 0 ) {
|
|---|
| 400 | $user_ts_type = 'paged';
|
|---|
| 401 | } else {
|
|---|
| 402 | foreach ( array('single', 'category', 'page', 'day', 'month', 'year', 'home') as $type ) {
|
|---|
| 403 | $func = 'is_' . $type;
|
|---|
| 404 | if ( call_user_func($func) ) {
|
|---|
| 405 | $user_ts_type = $type;
|
|---|
| 406 | break;
|
|---|
| 407 | }
|
|---|
| 408 | }
|
|---|
| 409 | }
|
|---|
| 410 | $redirect['path'] = user_trailingslashit($redirect['path'], $user_ts_type);
|
|---|
| 411 | } elseif ( is_front_page() ) {
|
|---|
| 412 | $redirect['path'] = trailingslashit($redirect['path']);
|
|---|
| 413 | }
|
|---|
| 414 |
|
|---|
| 415 | // Strip multiple slashes out of the URL
|
|---|
| 416 | if ( strpos($redirect['path'], '//') > -1 )
|
|---|
| 417 | $redirect['path'] = preg_replace('|/+|', '/', $redirect['path']);
|
|---|
| 418 |
|
|---|
| 419 | // Always trailing slash the Front Page URL
|
|---|
| 420 | if ( trailingslashit( $redirect['path'] ) == trailingslashit( $user_home['path'] ) )
|
|---|
| 421 | $redirect['path'] = trailingslashit($redirect['path']);
|
|---|
| 422 |
|
|---|
| 423 | // Ignore differences in host capitalization, as this can lead to infinite redirects
|
|---|
| 424 | // Only redirect no-www <=> yes-www
|
|---|
| 425 | if ( strtolower($original['host']) == strtolower($redirect['host']) ||
|
|---|
| 426 | ( strtolower($original['host']) != 'www.' . strtolower($redirect['host']) && 'www.' . strtolower($original['host']) != strtolower($redirect['host']) ) )
|
|---|
| 427 | $redirect['host'] = $original['host'];
|
|---|
| 428 |
|
|---|
| 429 | $compare_original = array( $original['host'], $original['path'] );
|
|---|
| 430 |
|
|---|
| 431 | if ( !empty( $original['port'] ) )
|
|---|
| 432 | $compare_original[] = $original['port'];
|
|---|
| 433 |
|
|---|
| 434 | if ( !empty( $original['query'] ) )
|
|---|
| 435 | $compare_original[] = $original['query'];
|
|---|
| 436 |
|
|---|
| 437 | $compare_redirect = array( $redirect['host'], $redirect['path'] );
|
|---|
| 438 |
|
|---|
| 439 | if ( !empty( $redirect['port'] ) )
|
|---|
| 440 | $compare_redirect[] = $redirect['port'];
|
|---|
| 441 |
|
|---|
| 442 | if ( !empty( $redirect['query'] ) )
|
|---|
| 443 | $compare_redirect[] = $redirect['query'];
|
|---|
| 444 |
|
|---|
| 445 | if ( $compare_original !== $compare_redirect ) {
|
|---|
| 446 | $redirect_url = $redirect['scheme'] . '://' . $redirect['host'];
|
|---|
| 447 | if ( !empty($redirect['port']) )
|
|---|
| 448 | $redirect_url .= ':' . $redirect['port'];
|
|---|
| 449 | $redirect_url .= $redirect['path'];
|
|---|
| 450 | if ( !empty($redirect['query']) )
|
|---|
| 451 | $redirect_url .= '?' . $redirect['query'];
|
|---|
| 452 | }
|
|---|
| 453 |
|
|---|
| 454 | if ( ! $redirect_url || $redirect_url == $requested_url ) {
|
|---|
| 455 | return;
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 | // Hex encoded octets are case-insensitive.
|
|---|
| 459 | if ( false !== strpos($requested_url, '%') ) {
|
|---|
| 460 | if ( !function_exists('lowercase_octets') ) {
|
|---|
| 461 | function lowercase_octets($matches) {
|
|---|
| 462 | return strtolower( $matches[0] );
|
|---|
| 463 | }
|
|---|
| 464 | }
|
|---|
| 465 | $requested_url = preg_replace_callback('|%[a-fA-F0-9][a-fA-F0-9]|', 'lowercase_octets', $requested_url);
|
|---|
| 466 | }
|
|---|
| 467 |
|
|---|
| 468 | /**
|
|---|
| 469 | * Filter the canonical redirect URL.
|
|---|
| 470 | *
|
|---|
| 471 | * Returning false to this filter will cancel the redirect.
|
|---|
| 472 | *
|
|---|
| 473 | * @since 2.3.0
|
|---|
| 474 | *
|
|---|
| 475 | * @param string $redirect_url The redirect URL.
|
|---|
| 476 | * @param string $requested_url The requested URL.
|
|---|
| 477 | */
|
|---|
| 478 | $redirect_url = apply_filters( 'redirect_canonical', $redirect_url, $requested_url );
|
|---|
| 479 |
|
|---|
| 480 | // yes, again -- in case the filter aborted the request
|
|---|
| 481 | if ( ! $redirect_url || $redirect_url == $requested_url ) {
|
|---|
| 482 | return;
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | if ( $do_redirect ) {
|
|---|
| 486 | // protect against chained redirects
|
|---|
| 487 | if ( !redirect_canonical($redirect_url, false) ) {
|
|---|
| 488 | wp_redirect($redirect_url, 301);
|
|---|
| 489 | exit();
|
|---|
| 490 | } else {
|
|---|
| 491 | // Debug
|
|---|
| 492 | // die("1: $redirect_url<br />2: " . redirect_canonical( $redirect_url, false ) );
|
|---|
| 493 | return;
|
|---|
| 494 | }
|
|---|
| 495 | } else {
|
|---|
| 496 | return $redirect_url;
|
|---|
| 497 | }
|
|---|
| 498 | }
|
|---|
| 499 |
|
|---|
| 500 | /**
|
|---|
| 501 | * Removes arguments from a query string if they are not present in a URL
|
|---|
| 502 | * DO NOT use this in plugin code.
|
|---|
| 503 | *
|
|---|
| 504 | * @since 3.4.0
|
|---|
| 505 | * @access private
|
|---|
| 506 | *
|
|---|
| 507 | * @param string $query_string
|
|---|
| 508 | * @param array $args_to_check
|
|---|
| 509 | * @param string $url
|
|---|
| 510 | * @return string The altered query string
|
|---|
| 511 | */
|
|---|
| 512 | function _remove_qs_args_if_not_in_url( $query_string, Array $args_to_check, $url ) {
|
|---|
| 513 | $parsed_url = @parse_url( $url );
|
|---|
| 514 | if ( ! empty( $parsed_url['query'] ) ) {
|
|---|
| 515 | parse_str( $parsed_url['query'], $parsed_query );
|
|---|
| 516 | foreach ( $args_to_check as $qv ) {
|
|---|
| 517 | if ( !isset( $parsed_query[$qv] ) )
|
|---|
| 518 | $query_string = remove_query_arg( $qv, $query_string );
|
|---|
| 519 | }
|
|---|
| 520 | } else {
|
|---|
| 521 | $query_string = remove_query_arg( $args_to_check, $query_string );
|
|---|
| 522 | }
|
|---|
| 523 | return $query_string;
|
|---|
| 524 | }
|
|---|
| 525 |
|
|---|
| 526 | /**
|
|---|
| 527 | * Attempts to guess the correct URL based on query vars
|
|---|
| 528 | *
|
|---|
| 529 | * @since 2.3.0
|
|---|
| 530 | *
|
|---|
| 531 | * @global wpdb $wpdb WordPress database abstraction object.
|
|---|
| 532 | * @global WP_Rewrite $wp_rewrite
|
|---|
| 533 | *
|
|---|
| 534 | * @return false|string The correct URL if one is found. False on failure.
|
|---|
| 535 | */
|
|---|
| 536 | function redirect_guess_404_permalink() {
|
|---|
| 537 | global $wpdb, $wp_rewrite;
|
|---|
| 538 |
|
|---|
| 539 | if ( get_query_var('name') ) {
|
|---|
| 540 | $where = $wpdb->prepare("post_name LIKE %s", $wpdb->esc_like( get_query_var('name') ) . '%');
|
|---|
| 541 |
|
|---|
| 542 | // if any of post_type, year, monthnum, or day are set, use them to refine the query
|
|---|
| 543 | if ( get_query_var('post_type') )
|
|---|
| 544 | $where .= $wpdb->prepare(" AND post_type = %s", get_query_var('post_type'));
|
|---|
| 545 | else
|
|---|
| 546 | $where .= " AND post_type IN ('" . implode( "', '", get_post_types( array( 'public' => true ) ) ) . "')";
|
|---|
| 547 |
|
|---|
| 548 | if ( get_query_var('year') )
|
|---|
| 549 | $where .= $wpdb->prepare(" AND YEAR(post_date) = %d", get_query_var('year'));
|
|---|
| 550 | if ( get_query_var('monthnum') )
|
|---|
| 551 | $where .= $wpdb->prepare(" AND MONTH(post_date) = %d", get_query_var('monthnum'));
|
|---|
| 552 | if ( get_query_var('day') )
|
|---|
| 553 | $where .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", get_query_var('day'));
|
|---|
| 554 |
|
|---|
| 555 | $post_id = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE $where AND post_status = 'publish'");
|
|---|
| 556 | if ( ! $post_id )
|
|---|
| 557 | return false;
|
|---|
| 558 | if ( get_query_var( 'feed' ) )
|
|---|
| 559 | return get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
|
|---|
| 560 | elseif ( get_query_var( 'page' ) )
|
|---|
| 561 | return trailingslashit( get_permalink( $post_id ) ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
|
|---|
| 562 | else
|
|---|
| 563 | return get_permalink( $post_id );
|
|---|
| 564 | }
|
|---|
| 565 |
|
|---|
| 566 | return false;
|
|---|
| 567 | }
|
|---|
| 568 |
|
|---|
| 569 | /**
|
|---|
| 570 | *
|
|---|
| 571 | * @global WP_Rewrite $wp_rewrite
|
|---|
| 572 | */
|
|---|
| 573 | function wp_redirect_admin_locations() {
|
|---|
| 574 | global $wp_rewrite;
|
|---|
| 575 | if ( ! ( is_404() && $wp_rewrite->using_permalinks() ) )
|
|---|
| 576 | return;
|
|---|
| 577 |
|
|---|
| 578 | $admins = array(
|
|---|
| 579 | home_url( 'wp-admin', 'relative' ),
|
|---|
| 580 | home_url( 'dashboard', 'relative' ),
|
|---|
| 581 | home_url( 'admin', 'relative' ),
|
|---|
| 582 | site_url( 'dashboard', 'relative' ),
|
|---|
| 583 | site_url( 'admin', 'relative' ),
|
|---|
| 584 | );
|
|---|
| 585 | if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $admins ) ) {
|
|---|
| 586 | wp_redirect( admin_url() );
|
|---|
| 587 | exit;
|
|---|
| 588 | }
|
|---|
| 589 |
|
|---|
| 590 | $logins = array(
|
|---|
| 591 | home_url( 'wp-login.php', 'relative' ),
|
|---|
| 592 | home_url( 'login', 'relative' ),
|
|---|
| 593 | site_url( 'login', 'relative' ),
|
|---|
| 594 | );
|
|---|
| 595 | if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $logins ) ) {
|
|---|
| 596 | wp_redirect( site_url( 'wp-login.php', 'login' ) );
|
|---|
| 597 | exit;
|
|---|
| 598 | }
|
|---|
| 599 | }
|
|---|
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