]> scripts.mit.edu Git - autoinstalls/wordpress.git/blobdiff - wp-includes/canonical.php
WordPress 3.8.1
[autoinstalls/wordpress.git] / wp-includes / canonical.php
index 683c1479a8759a4136613358c28034227ed48ee7..231855ea50fe9d58b4af9d1c393096eeefed05be 100644 (file)
@@ -18,7 +18,9 @@
  * one or the other.
  *
  * Prevents redirection for feeds, trackbacks, searches, comment popup, and
- * admin URLs. Does not redirect on IIS, page/post previews, and on form data.
+ * 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
@@ -37,7 +39,7 @@
 function redirect_canonical( $requested_url = null, $do_redirect = true ) {
        global $wp_rewrite, $is_IIS, $wp_query, $wpdb;
 
-       if ( is_trackback() || is_search() || is_comments_popup() || is_admin() || !empty($_POST) || is_preview() || is_robots() || $is_IIS )
+       if ( is_trackback() || is_search() || is_comments_popup() || is_admin() || !empty($_POST) || is_preview() || is_robots() || ( $is_IIS && !iis7_supports_permalinks() ) )
                return;
 
        if ( !$requested_url ) {
@@ -99,8 +101,22 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
                        }
                }
 
+               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( $requested_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 );
                        }
                }
@@ -270,9 +286,9 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
                                $redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] );
                        }
 
-                       $redirect['path'] = user_trailingslashit( preg_replace('|/index.php/?$|', '/', $redirect['path']) ); // strip off trailing /index.php/
-                       if ( !empty( $addl_path ) && $wp_rewrite->using_index_permalinks() && strpos($redirect['path'], '/index.php/') === false )
-                               $redirect['path'] = trailingslashit($redirect['path']) . 'index.php/';
+                       $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'];
@@ -280,7 +296,8 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
 
                if ( 'wp-register.php' == basename( $redirect['path'] ) ) {
                        if ( is_multisite() )
-                               $redirect_url = apply_filters( 'wp_signup_location', site_url( 'wp-signup.php' ) );
+                               /** 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 );
@@ -322,7 +339,7 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
                unset($redirect['port']);
 
        // trailing /index.php
-       $redirect['path'] = preg_replace('|/index.php/*?$|', '/', $redirect['path']);
+       $redirect['path'] = preg_replace('|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path']);
 
        // Remove trailing spaces from the path
        $redirect['path'] = preg_replace( '#(%20| )+$#', '', $redirect['path'] );
@@ -335,7 +352,7 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
                $redirect['query'] = trim(preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query']), '&');
 
                // Redirect obsolete feeds
-               $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$3', $redirect['query'] );
+               $redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] );
 
                // Remove redundant leading ampersands
                $redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
@@ -343,7 +360,7 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
 
        // strip /index.php/ when we're not using PATHINFO permalinks
        if ( !$wp_rewrite->using_index_permalinks() )
-               $redirect['path'] = str_replace('/index.php/', '/', $redirect['path']);
+               $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) ) ) ) {
@@ -416,8 +433,17 @@ function redirect_canonical( $requested_url = null, $do_redirect = true ) {
                $requested_url = preg_replace_callback('|%[a-fA-F0-9][a-fA-F0-9]|', 'lowercase_octets', $requested_url);
        }
 
-       // Note that you can use the "redirect_canonical" filter to cancel a canonical redirect for whatever reason by returning false
-       $redirect_url = apply_filters('redirect_canonical', $redirect_url, $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;
@@ -461,31 +487,16 @@ function _remove_qs_args_if_not_in_url( $query_string, Array $args_to_check, $ur
 }
 
 /**
- * Attempts to guess the correct URL from the current URL (that produced a 404) or
- * the current query variables.
+ * Attempts to guess the correct URL based on query vars
  *
  * @since 2.3.0
  * @uses $wpdb
  *
- * @param string $current_url Optional. The URL that has 404'd.
  * @return bool|string The correct URL if one is found. False on failure.
  */
-function redirect_guess_404_permalink( $current_url = '' ) {
+function redirect_guess_404_permalink() {
        global $wpdb, $wp_rewrite;
 
-       if ( ! empty( $current_url ) )
-               $parsed_url = @parse_url( $current_url );
-
-       // Attempt to redirect bare category slugs if the permalink structure starts
-       // with the %category% tag.
-       if ( isset( $parsed_url['path'] )
-               && preg_match( '#^[^%]+%category%#', $wp_rewrite->permalink_structure )
-               && $cat = get_category_by_path( $parsed_url['path'] )
-       ) {
-               if ( ! is_wp_error( $cat ) )
-                       return get_term_link( $cat );
-       }
-
        if ( get_query_var('name') ) {
                $where = $wpdb->prepare("post_name LIKE %s", like_escape( get_query_var('name') ) . '%');