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'] ) ] ) ) { |
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293 | $redirect_url = get_feed_link( $old_feed_files[ basename( $redirect['path'] ) ] ); |
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294 | wp_redirect( $redirect_url, 301 ); |
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295 | die(); |
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296 | } |
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297 | } |
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298 | |
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299 | if ( get_query_var('paged') > 0 ) { |
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300 | $paged = get_query_var('paged'); |
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301 | $redirect['query'] = remove_query_arg( 'paged', $redirect['query'] ); |
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302 | if ( !is_feed() ) { |
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303 | if ( $paged > 1 && !is_single() ) { |
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304 | $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit("$wp_rewrite->pagination_base/$paged", 'paged'); |
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305 | } elseif ( !is_single() ) { |
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306 | $addl_path = !empty( $addl_path ) ? trailingslashit($addl_path) : ''; |
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307 | } |
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308 | } elseif ( $paged > 1 ) { |
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309 | $redirect['query'] = add_query_arg( 'paged', $paged, $redirect['query'] ); |
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310 | } |
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311 | } |
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312 | |
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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 ) ) ) { |
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314 | $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit( $wp_rewrite->comments_pagination_base . '-' . get_query_var('cpage'), 'commentpaged' ); |
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315 | $redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] ); |
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316 | } |
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317 | |
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318 | $redirect['path'] = user_trailingslashit( preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/?$|', '/', $redirect['path']) ); // strip off trailing /index.php/ |
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319 | if ( !empty( $addl_path ) && $wp_rewrite->using_index_permalinks() && strpos($redirect['path'], '/' . $wp_rewrite->index . '/') === false ) |
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320 | $redirect['path'] = trailingslashit($redirect['path']) . $wp_rewrite->index . '/'; |
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321 | if ( !empty( $addl_path ) ) |
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322 | $redirect['path'] = trailingslashit($redirect['path']) . $addl_path; |
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323 | $redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path']; |
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324 | } |
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325 | |
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326 | if ( 'wp-register.php' == basename( $redirect['path'] ) ) { |
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327 | if ( is_multisite() ) { |
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328 | /** This filter is documented in wp-login.php */ |
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329 | $redirect_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) ); |
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330 | } else { |
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331 | $redirect_url = site_url( 'wp-login.php?action=register' ); |
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332 | } |
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333 | |
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334 | wp_redirect( $redirect_url, 301 ); |
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335 | die(); |
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336 | } |
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337 | } |
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338 | |
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339 | // tack on any additional query vars |
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340 | $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] ); |
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341 | if ( $redirect_url && !empty($redirect['query']) ) { |
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342 | parse_str( $redirect['query'], $_parsed_query ); |
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343 | $redirect = @parse_url($redirect_url); |
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344 | |
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345 | if ( ! empty( $_parsed_query['name'] ) && ! empty( $redirect['query'] ) ) { |
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346 | parse_str( $redirect['query'], $_parsed_redirect_query ); |
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347 | |
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348 | if ( empty( $_parsed_redirect_query['name'] ) ) |
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349 | unset( $_parsed_query['name'] ); |
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350 | } |
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351 | |
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352 | $_parsed_query = rawurlencode_deep( $_parsed_query ); |
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353 | $redirect_url = add_query_arg( $_parsed_query, $redirect_url ); |
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354 | } |
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355 | |
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356 | if ( $redirect_url ) |
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357 | $redirect = @parse_url($redirect_url); |
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358 | |
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359 | // www.example.com vs example.com |
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360 | $user_home = @parse_url(home_url()); |
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361 | if ( !empty($user_home['host']) ) |
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362 | $redirect['host'] = $user_home['host']; |
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363 | if ( empty($user_home['path']) ) |
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364 | $user_home['path'] = '/'; |
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365 | |
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366 | // Handle ports |
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367 | if ( !empty($user_home['port']) ) |
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368 | $redirect['port'] = $user_home['port']; |
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369 | else |
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370 | unset($redirect['port']); |
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371 | |
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372 | // trailing /index.php |
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373 | $redirect['path'] = preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path']); |
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374 | |
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375 | // Remove trailing spaces from the path |
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376 | $redirect['path'] = preg_replace( '#(%20| )+$#', '', $redirect['path'] ); |
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377 | |
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378 | if ( !empty( $redirect['query'] ) ) { |
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379 | // Remove trailing spaces from certain terminating query string args |
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380 | $redirect['query'] = preg_replace( '#((p|page_id|cat|tag)=[^&]*?)(%20| )+$#', '$1', $redirect['query'] ); |
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381 | |
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382 | // Clean up empty query strings |
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383 | $redirect['query'] = trim(preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query']), '&'); |
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384 | |
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385 | // Redirect obsolete feeds |
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386 | $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] ); |
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387 | |
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388 | // Remove redundant leading ampersands |
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389 | $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] ); |
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390 | } |
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391 | |
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392 | // strip /index.php/ when we're not using PATHINFO permalinks |
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393 | if ( !$wp_rewrite->using_index_permalinks() ) |
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394 | $redirect['path'] = str_replace( '/' . $wp_rewrite->index . '/', '/', $redirect['path'] ); |
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395 | |
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396 | // trailing slashes |
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397 | if ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() && !is_404() && (!is_front_page() || ( is_front_page() && (get_query_var('paged') > 1) ) ) ) { |
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398 | $user_ts_type = ''; |
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399 | if ( get_query_var('paged') > 0 ) { |
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400 | $user_ts_type = 'paged'; |
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401 | } else { |
---|
402 | foreach ( array('single', 'category', 'page', 'day', 'month', 'year', 'home') as $type ) { |
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403 | $func = 'is_' . $type; |
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404 | if ( call_user_func($func) ) { |
---|
405 | $user_ts_type = $type; |
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406 | break; |
---|
407 | } |
---|
408 | } |
---|
409 | } |
---|
410 | $redirect['path'] = user_trailingslashit($redirect['path'], $user_ts_type); |
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411 | } elseif ( is_front_page() ) { |
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412 | $redirect['path'] = trailingslashit($redirect['path']); |
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413 | } |
---|
414 | |
---|
415 | // Strip multiple slashes out of the URL |
---|
416 | if ( strpos($redirect['path'], '//') > -1 ) |
---|
417 | $redirect['path'] = preg_replace('|/+|', '/', $redirect['path']); |
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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']; |
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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 | } |
---|