WordPressを読む 62 /blog/wp-includes/canonical.php
2015/02/27
目次
/blog/wp-includes/canonical.php
関数 redirect_canonical()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 | <?php /** * Canonical API to handle WordPress Redirecting * * Based on "Permalink Redirect" from Scott Yang and "Enforce www. Preference" * by Mark Jaquith * * @package WordPress * @since 2.3.0 */ /** * Redirects incoming links to the proper URL based on the site url. * * Search engines consider www.somedomain.com and somedomain.com to be two * different URLs when they both go to the same location. This SEO enhancement * prevents penalty for duplicate content by redirecting all incoming links to * one or the other. * * Prevents redirection for feeds, trackbacks, searches, comment popup, and * admin URLs. Does not redirect on non-pretty-permalink-supporting IIS 7+, * page/post previews, WP admin, Trackbacks, robots.txt, searches, or on POST * requests. * * Will also attempt to find the correct link when a user enters a URL that does * not exist based on exact WordPress query. Will instead try to parse the URL * or query in an attempt to figure the correct page to go to. * * @since 2.3.0 * @uses $wp_rewrite * @uses $is_IIS * * @param string $requested_url Optional. The URL that was requested, used to * figure if redirect is needed. * @param bool $do_redirect Optional. Redirect to the new URL. * @return null|false|string Null, if redirect not needed. False, if redirect * not needed or the string of the URL */ function redirect_canonical( $requested_url = null, $do_redirect = true ) { global $wp_rewrite, $is_IIS, $wp_query, $wpdb; if ( isset( $_SERVER['REQUEST_METHOD'] ) && ! in_array( strtoupper( $_SERVER['REQUEST_METHOD'] ), array( 'GET', 'HEAD' ) ) ) { return; } // If we're not in wp-admin and the post has been published and preview nonce // is non-existent or invalid then no need for preview in query if ( is_preview() && get_query_var( 'p' ) && 'publish' == get_post_status( get_query_var( 'p' ) ) ) { if ( ! isset( $_GET['preview_id'] ) || ! isset( $_GET['preview_nonce'] ) || ! wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . (int) $_GET['preview_id'] ) ) { $wp_query->is_preview = false; } } if ( is_trackback() || is_search() || is_comments_popup() || is_admin() || is_preview() || is_robots() || ( $is_IIS && !iis7_supports_permalinks() ) ) { return; } if ( !$requested_url ) { // build the URL in the address bar $requested_url = is_ssl() ? 'https://' : 'http://'; $requested_url .= $_SERVER['HTTP_HOST']; $requested_url .= $_SERVER['REQUEST_URI']; } $original = @parse_url($requested_url); if ( false === $original ) return; // Some PHP setups turn requests for / into /index.php in REQUEST_URI // See: http://trac.wordpress.org/ticket/5017 // See: http://trac.wordpress.org/ticket/7173 // Disabled, for now: // $original['path'] = preg_replace('|/index\.php$|', '/', $original['path']); $redirect = $original; $redirect_url = false; // Notice fixing if ( !isset($redirect['path']) ) $redirect['path'] = ''; if ( !isset($redirect['query']) ) $redirect['query'] = ''; // It's not a preview, so remove it from URL if ( get_query_var( 'preview' ) ) { $redirect['query'] = remove_query_arg( 'preview', $redirect['query'] ); } if ( is_feed() && ( $id = get_query_var( 'p' ) ) ) { if ( $redirect_url = get_post_comments_feed_link( $id, get_query_var( 'feed' ) ) ) { $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type', 'feed'), $redirect_url ); $redirect['path'] = parse_url( $redirect_url, PHP_URL_PATH ); } } if ( is_singular() && 1 > $wp_query->post_count && ($id = get_query_var('p')) ) { $vars = $wpdb->get_results( $wpdb->prepare("SELECT post_type, post_parent FROM $wpdb->posts WHERE ID = %d", $id) ); if ( isset($vars[0]) && $vars = $vars[0] ) { if ( 'revision' == $vars->post_type && $vars->post_parent > 0 ) $id = $vars->post_parent; if ( $redirect_url = get_permalink($id) ) $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url ); } } // These tests give us a WP-generated permalink if ( is_404() ) { // Redirect ?page_id, ?p=, ?attachment_id= to their respective url's $id = max( get_query_var('p'), get_query_var('page_id'), get_query_var('attachment_id') ); if ( $id && $redirect_post = get_post($id) ) { $post_type_obj = get_post_type_object($redirect_post->post_type); if ( $post_type_obj->public ) { $redirect_url = get_permalink($redirect_post); $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url ); } } if ( get_query_var( 'day' ) && get_query_var( 'monthnum' ) && get_query_var( 'year' ) ) { $year = get_query_var( 'year' ); $month = get_query_var( 'monthnum' ); $day = get_query_var( 'day' ); $date = sprintf( '%04d-%02d-%02d', $year, $month, $day ); if ( ! wp_checkdate( $month, $day, $year, $date ) ) { $redirect_url = get_month_link( $year, $month ); $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'year', 'monthnum', 'day' ), $redirect_url ); } } elseif ( get_query_var( 'monthnum' ) && get_query_var( 'year' ) && 12 < get_query_var( 'monthnum' ) ) { $redirect_url = get_year_link( get_query_var( 'year' ) ); $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'year', 'monthnum' ), $redirect_url ); } if ( ! $redirect_url ) { if ( $redirect_url = redirect_guess_404_permalink() ) { $redirect['query'] = _remove_qs_args_if_not_in_url( $redirect['query'], array( 'page', 'feed', 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ), $redirect_url ); } } } elseif ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) { // rewriting of old ?p=X, ?m=2004, ?m=200401, ?m=20040101 if ( is_attachment() && !empty($_GET['attachment_id']) && ! $redirect_url ) { if ( $redirect_url = get_attachment_link(get_query_var('attachment_id')) ) $redirect['query'] = remove_query_arg('attachment_id', $redirect['query']); } elseif ( is_single() && !empty($_GET['p']) && ! $redirect_url ) { if ( $redirect_url = get_permalink(get_query_var('p')) ) $redirect['query'] = remove_query_arg(array('p', 'post_type'), $redirect['query']); } elseif ( is_single() && !empty($_GET['name']) && ! $redirect_url ) { if ( $redirect_url = get_permalink( $wp_query->get_queried_object_id() ) ) $redirect['query'] = remove_query_arg('name', $redirect['query']); } elseif ( is_page() && !empty($_GET['page_id']) && ! $redirect_url ) { if ( $redirect_url = get_permalink(get_query_var('page_id')) ) $redirect['query'] = remove_query_arg('page_id', $redirect['query']); } elseif ( is_page() && !is_feed() && isset($wp_query->queried_object) && 'page' == get_option('show_on_front') && $wp_query->queried_object->ID == get_option('page_on_front') && ! $redirect_url ) { $redirect_url = home_url('/'); } elseif ( is_home() && !empty($_GET['page_id']) && 'page' == get_option('show_on_front') && get_query_var('page_id') == get_option('page_for_posts') && ! $redirect_url ) { if ( $redirect_url = get_permalink(get_option('page_for_posts')) ) $redirect['query'] = remove_query_arg('page_id', $redirect['query']); } elseif ( !empty($_GET['m']) && ( is_year() || is_month() || is_day() ) ) { $m = get_query_var('m'); switch ( strlen($m) ) { case 4: // Yearly $redirect_url = get_year_link($m); break; case 6: // Monthly $redirect_url = get_month_link( substr($m, 0, 4), substr($m, 4, 2) ); break; case 8: // Daily $redirect_url = get_day_link(substr($m, 0, 4), substr($m, 4, 2), substr($m, 6, 2)); break; } if ( $redirect_url ) $redirect['query'] = remove_query_arg('m', $redirect['query']); // now moving on to non ?m=X year/month/day links } elseif ( is_day() && get_query_var('year') && get_query_var('monthnum') && !empty($_GET['day']) ) { if ( $redirect_url = get_day_link(get_query_var('year'), get_query_var('monthnum'), get_query_var('day')) ) $redirect['query'] = remove_query_arg(array('year', 'monthnum', 'day'), $redirect['query']); } elseif ( is_month() && get_query_var('year') && !empty($_GET['monthnum']) ) { if ( $redirect_url = get_month_link(get_query_var('year'), get_query_var('monthnum')) ) $redirect['query'] = remove_query_arg(array('year', 'monthnum'), $redirect['query']); } elseif ( is_year() && !empty($_GET['year']) ) { if ( $redirect_url = get_year_link(get_query_var('year')) ) $redirect['query'] = remove_query_arg('year', $redirect['query']); } elseif ( is_author() && !empty($_GET['author']) && preg_match( '|^[0-9]+$|', $_GET['author'] ) ) { $author = get_userdata(get_query_var('author')); if ( ( false !== $author ) && $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE $wpdb->posts.post_author = %d AND $wpdb->posts.post_status = 'publish' LIMIT 1", $author->ID ) ) ) { if ( $redirect_url = get_author_posts_url($author->ID, $author->user_nicename) ) $redirect['query'] = remove_query_arg('author', $redirect['query']); } } elseif ( is_category() || is_tag() || is_tax() ) { // Terms (Tags/categories) $term_count = 0; foreach ( $wp_query->tax_query->queries as $tax_query ) $term_count += count( $tax_query['terms'] ); $obj = $wp_query->get_queried_object(); if ( $term_count <= 1 && !empty($obj->term_id) && ( $tax_url = get_term_link((int)$obj->term_id, $obj->taxonomy) ) && !is_wp_error($tax_url) ) { if ( !empty($redirect['query']) ) { // Strip taxonomy query vars off the url. $qv_remove = array( 'term', 'taxonomy'); if ( is_category() ) { $qv_remove[] = 'category_name'; $qv_remove[] = 'cat'; } elseif ( is_tag() ) { $qv_remove[] = 'tag'; $qv_remove[] = 'tag_id'; } else { // Custom taxonomies will have a custom query var, remove those too: $tax_obj = get_taxonomy( $obj->taxonomy ); if ( false !== $tax_obj->query_var ) $qv_remove[] = $tax_obj->query_var; } $rewrite_vars = array_diff( array_keys($wp_query->query), array_keys($_GET) ); if ( !array_diff($rewrite_vars, array_keys($_GET)) ) { // Check to see if all the Query vars are coming from the rewrite, none are set via $_GET $redirect['query'] = remove_query_arg($qv_remove, $redirect['query']); //Remove all of the per-tax qv's // Create the destination url for this taxonomy $tax_url = parse_url($tax_url); if ( ! empty($tax_url['query']) ) { // Taxonomy accessible via ?taxonomy=..&term=.. or any custom qv.. parse_str($tax_url['query'], $query_vars); $redirect['query'] = add_query_arg($query_vars, $redirect['query']); } else { // Taxonomy is accessible via a "pretty-URL" $redirect['path'] = $tax_url['path']; } } else { // Some query vars are set via $_GET. Unset those from $_GET that exist via the rewrite foreach ( $qv_remove as $_qv ) { if ( isset($rewrite_vars[$_qv]) ) $redirect['query'] = remove_query_arg($_qv, $redirect['query']); } } } } } elseif ( is_single() && strpos($wp_rewrite->permalink_structure, '%category%') !== false && $cat = get_query_var( 'category_name' ) ) { $category = get_category_by_path( $cat ); $post_terms = wp_get_object_terms($wp_query->get_queried_object_id(), 'category', array('fields' => 'tt_ids')); if ( (!$category || is_wp_error($category)) || ( !is_wp_error($post_terms) && !empty($post_terms) && !in_array($category->term_taxonomy_id, $post_terms) ) ) $redirect_url = get_permalink($wp_query->get_queried_object_id()); } // Post Paging if ( is_singular() && ! is_front_page() && get_query_var('page') ) { if ( !$redirect_url ) $redirect_url = get_permalink( get_queried_object_id() ); $redirect_url = trailingslashit( $redirect_url ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' ); $redirect['query'] = remove_query_arg( 'page', $redirect['query'] ); } // paging and feeds if ( get_query_var('paged') || is_feed() || get_query_var('cpage') ) { while ( preg_match( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", $redirect['path'] ) || preg_match( '#/(comments/?)?(feed|rss|rdf|atom|rss2)(/+)?$#', $redirect['path'] ) || preg_match( '#/comment-page-[0-9]+(/+)?$#', $redirect['path'] ) ) { // Strip off paging and feed $redirect['path'] = preg_replace("#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", '/', $redirect['path']); // strip off any existing paging $redirect['path'] = preg_replace('#/(comments/?)?(feed|rss2?|rdf|atom)(/+|$)#', '/', $redirect['path']); // strip off feed endings $redirect['path'] = preg_replace('#/comment-page-[0-9]+?(/+)?$#', '/', $redirect['path']); // strip off any existing comment paging } $addl_path = ''; if ( is_feed() && in_array( get_query_var('feed'), $wp_rewrite->feeds ) ) { $addl_path = !empty( $addl_path ) ? trailingslashit($addl_path) : ''; if ( !is_singular() && get_query_var( 'withcomments' ) ) $addl_path .= 'comments/'; if ( ( 'rss' == get_default_feed() && 'feed' == get_query_var('feed') ) || 'rss' == get_query_var('feed') ) $addl_path .= user_trailingslashit( 'feed/' . ( ( get_default_feed() == 'rss2' ) ? '' : 'rss2' ), 'feed' ); else $addl_path .= user_trailingslashit( 'feed/' . ( ( get_default_feed() == get_query_var('feed') || 'feed' == get_query_var('feed') ) ? '' : get_query_var('feed') ), 'feed' ); $redirect['query'] = remove_query_arg( 'feed', $redirect['query'] ); } elseif ( is_feed() && 'old' == get_query_var('feed') ) { $old_feed_files = array( 'wp-atom.php' => 'atom', 'wp-commentsrss2.php' => 'comments_rss2', 'wp-feed.php' => get_default_feed(), 'wp-rdf.php' => 'rdf', 'wp-rss.php' => 'rss2', 'wp-rss2.php' => 'rss2', ); if ( isset( $old_feed_files[ basename( $redirect['path'] ) ] ) ) { $redirect_url = get_feed_link( $old_feed_files[ basename( $redirect['path'] ) ] ); wp_redirect( $redirect_url, 301 ); die(); } } if ( get_query_var('paged') > 0 ) { $paged = get_query_var('paged'); $redirect['query'] = remove_query_arg( 'paged', $redirect['query'] ); if ( !is_feed() ) { if ( $paged > 1 && !is_single() ) { $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit("$wp_rewrite->pagination_base/$paged", 'paged'); } elseif ( !is_single() ) { $addl_path = !empty( $addl_path ) ? trailingslashit($addl_path) : ''; } } elseif ( $paged > 1 ) { $redirect['query'] = add_query_arg( 'paged', $paged, $redirect['query'] ); } } 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 ) ) ) { $addl_path = ( !empty( $addl_path ) ? trailingslashit($addl_path) : '' ) . user_trailingslashit( 'comment-page-' . get_query_var('cpage'), 'commentpaged' ); $redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] ); } $redirect['path'] = user_trailingslashit( preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/?$|', '/', $redirect['path']) ); // strip off trailing /index.php/ if ( !empty( $addl_path ) && $wp_rewrite->using_index_permalinks() && strpos($redirect['path'], '/' . $wp_rewrite->index . '/') === false ) $redirect['path'] = trailingslashit($redirect['path']) . $wp_rewrite->index . '/'; if ( !empty( $addl_path ) ) $redirect['path'] = trailingslashit($redirect['path']) . $addl_path; $redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path']; } if ( 'wp-register.php' == basename( $redirect['path'] ) ) { if ( is_multisite() ) { /** This filter is documented in wp-login.php */ $redirect_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) ); } else { $redirect_url = site_url( 'wp-login.php?action=register' ); } wp_redirect( $redirect_url, 301 ); die(); } } // tack on any additional query vars $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] ); if ( $redirect_url && !empty($redirect['query']) ) { parse_str( $redirect['query'], $_parsed_query ); $redirect = @parse_url($redirect_url); if ( ! empty( $_parsed_query['name'] ) && ! empty( $redirect['query'] ) ) { parse_str( $redirect['query'], $_parsed_redirect_query ); if ( empty( $_parsed_redirect_query['name'] ) ) unset( $_parsed_query['name'] ); } $_parsed_query = rawurlencode_deep( $_parsed_query ); $redirect_url = add_query_arg( $_parsed_query, $redirect_url ); } if ( $redirect_url ) $redirect = @parse_url($redirect_url); // www.example.com vs example.com $user_home = @parse_url(home_url()); if ( !empty($user_home['host']) ) $redirect['host'] = $user_home['host']; if ( empty($user_home['path']) ) $user_home['path'] = '/'; // Handle ports if ( !empty($user_home['port']) ) $redirect['port'] = $user_home['port']; else unset($redirect['port']); if ( ! empty( $user_home['scheme'] ) && $user_home['scheme'] === 'https' ) { $redirect['scheme'] = 'https'; } // trailing /index.php $redirect['path'] = preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path']); // Remove trailing spaces from the path $redirect['path'] = preg_replace( '#(%20| )+$#', '', $redirect['path'] ); if ( !empty( $redirect['query'] ) ) { // Remove trailing spaces from certain terminating query string args $redirect['query'] = preg_replace( '#((p|page_id|cat|tag)=[^&]*?)(%20| )+$#', '$1', $redirect['query'] ); // Clean up empty query strings $redirect['query'] = trim(preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query']), '&'); // Redirect obsolete feeds $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] ); // Remove redundant leading ampersands $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] ); } // strip /index.php/ when we're not using PATHINFO permalinks if ( !$wp_rewrite->using_index_permalinks() ) $redirect['path'] = str_replace( '/' . $wp_rewrite->index . '/', '/', $redirect['path'] ); // trailing slashes if ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() && !is_404() && (!is_front_page() || ( is_front_page() && (get_query_var('paged') > 1) ) ) ) { $user_ts_type = ''; if ( get_query_var('paged') > 0 ) { $user_ts_type = 'paged'; } else { foreach ( array('single', 'category', 'page', 'day', 'month', 'year', 'home') as $type ) { $func = 'is_' . $type; if ( call_user_func($func) ) { $user_ts_type = $type; break; } } } $redirect['path'] = user_trailingslashit($redirect['path'], $user_ts_type); } elseif ( is_front_page() ) { $redirect['path'] = trailingslashit($redirect['path']); } // Strip multiple slashes out of the URL if ( strpos($redirect['path'], '//') > -1 ) $redirect['path'] = preg_replace('|/+|', '/', $redirect['path']); // Always trailing slash the Front Page URL if ( trailingslashit( $redirect['path'] ) == trailingslashit( $user_home['path'] ) ) $redirect['path'] = trailingslashit($redirect['path']); // Ignore differences in host capitalization, as this can lead to infinite redirects // Only redirect no-www <=> yes-www if ( strtolower($original['host']) == strtolower($redirect['host']) || ( strtolower($original['host']) != 'www.' . strtolower($redirect['host']) && 'www.' . strtolower($original['host']) != strtolower($redirect['host']) ) ) $redirect['host'] = $original['host']; $compare_original = array( $original['scheme'], $original['host'], $original['path'] ); if ( !empty( $original['port'] ) ) $compare_original[] = $original['port']; if ( !empty( $original['query'] ) ) $compare_original[] = $original['query']; $compare_redirect = array( $redirect['scheme'], $redirect['host'], $redirect['path'] ); if ( !empty( $redirect['port'] ) ) $compare_redirect[] = $redirect['port']; if ( !empty( $redirect['query'] ) ) $compare_redirect[] = $redirect['query']; if ( $compare_original !== $compare_redirect ) { $redirect_url = $redirect['scheme'] . '://' . $redirect['host']; if ( !empty($redirect['port']) ) $redirect_url .= ':' . $redirect['port']; $redirect_url .= $redirect['path']; if ( !empty($redirect['query']) ) $redirect_url .= '?' . $redirect['query']; } if ( !$redirect_url || $redirect_url == $requested_url ) return false; // Hex encoded octets are case-insensitive. if ( false !== strpos($requested_url, '%') ) { if ( !function_exists('lowercase_octets') ) { function lowercase_octets($matches) { return strtolower( $matches[0] ); } } $requested_url = preg_replace_callback('|%[a-fA-F0-9][a-fA-F0-9]|', 'lowercase_octets', $requested_url); } /** * Filter the canonical redirect URL. * * Returning false to this filter will cancel the redirect. * * @since 2.3.0 * * @param string $redirect_url The redirect URL. * @param string $requested_url The requested URL. */ $redirect_url = apply_filters( 'redirect_canonical', $redirect_url, $requested_url ); if ( !$redirect_url || $redirect_url == $requested_url ) // yes, again -- in case the filter aborted the request return false; if ( $do_redirect ) { // protect against chained redirects if ( !redirect_canonical($redirect_url, false) ) { wp_redirect($redirect_url, 301); exit(); } else { // Debug // die("1: $redirect_url<br />2: " . redirect_canonical( $redirect_url, false ) ); return false; } } else { return $redirect_url; } } |
関数 _remove_qs_args_if_not_in_url()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | /** * Removes arguments from a query string if they are not present in a URL * DO NOT use this in plugin code. * * @since 3.4.0 * @access private * * @return string The altered query string */ function _remove_qs_args_if_not_in_url( $query_string, Array $args_to_check, $url ) { $parsed_url = @parse_url( $url ); if ( ! empty( $parsed_url['query'] ) ) { parse_str( $parsed_url['query'], $parsed_query ); foreach ( $args_to_check as $qv ) { if ( !isset( $parsed_query[$qv] ) ) $query_string = remove_query_arg( $qv, $query_string ); } } else { $query_string = remove_query_arg( $args_to_check, $query_string ); } return $query_string; } |
関数 redirect_guess_404_permalink()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | /** * Attempts to guess the correct URL based on query vars * * @since 2.3.0 * @uses $wpdb * * @return bool|string The correct URL if one is found. False on failure. */ function redirect_guess_404_permalink() { global $wpdb, $wp_rewrite; if ( get_query_var('name') ) { $where = $wpdb->prepare("post_name LIKE %s", $wpdb->esc_like( get_query_var('name') ) . '%'); // if any of post_type, year, monthnum, or day are set, use them to refine the query if ( get_query_var('post_type') ) $where .= $wpdb->prepare(" AND post_type = %s", get_query_var('post_type')); else $where .= " AND post_type IN ('" . implode( "', '", get_post_types( array( 'public' => true ) ) ) . "')"; if ( get_query_var('year') ) $where .= $wpdb->prepare(" AND YEAR(post_date) = %d", get_query_var('year')); if ( get_query_var('monthnum') ) $where .= $wpdb->prepare(" AND MONTH(post_date) = %d", get_query_var('monthnum')); if ( get_query_var('day') ) $where .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", get_query_var('day')); $post_id = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE $where AND post_status = 'publish'"); if ( ! $post_id ) return false; if ( get_query_var( 'feed' ) ) return get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) ); elseif ( get_query_var( 'page' ) ) return trailingslashit( get_permalink( $post_id ) ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' ); else return get_permalink( $post_id ); } return false; } |
関数間の処理 redirect_canonical
1 | add_action('template_redirect', 'redirect_canonical'); |
関数 wp_redirect_admin_locations()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | function wp_redirect_admin_locations() { global $wp_rewrite; if ( ! ( is_404() && $wp_rewrite->using_permalinks() ) ) return; $admins = array( home_url( 'wp-admin', 'relative' ), home_url( 'dashboard', 'relative' ), home_url( 'admin', 'relative' ), site_url( 'dashboard', 'relative' ), site_url( 'admin', 'relative' ), ); if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $admins ) ) { wp_redirect( admin_url() ); exit; } $logins = array( home_url( 'wp-login.php', 'relative' ), home_url( 'login', 'relative' ), site_url( 'login', 'relative' ), ); if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $logins ) ) { wp_redirect( site_url( 'wp-login.php', 'login' ) ); exit; } } |
関数間の処理 wp_redirect_admin_locations
1 | add_action( 'template_redirect', 'wp_redirect_admin_locations', 1000 ); |