Ticket #4231: 4231.diff

wp-includes/default-filters.php

@@ -190 +190 @@
 add_action('save_post', '_save_post_hook', 5, 2);
 add_action('transition_post_status', '_transition_post_status', 5, 3);
 
-?>
- No newline at end of file
+// actions to schedule the update_links call
+add_action('update_links','wp_update_links');
+add_action('update_option_use_linksupdate', 'links_update_change',10,2);
+?>

wp-includes/pluggable.php

@@ -174 +174 @@
         if ( empty( $headers ) ) {
                 $headers = array();
         } elseif ( !is_array( $headers ) ) {
-                // Explode the headers out, so this function can take both 
+                // Explode the headers out, so this function can take both
                 // string headers and an array of headers.
                 $tempheaders = (array) explode( "\n", $headers );
                 $headers = array();
@@ -396 +396 @@
         $location = apply_filters('wp_redirect', $location, $status);
 
         if ( !$location ) // allows the wp_redirect filter to cancel a redirect
-                return false; 
+                return false;
 
         $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%]|i', '', $location);
         $location = wp_kses_no_null($location);
@@ -548 +548 @@
         global $wpdb;
 
         if( get_option( "moderation_notify" ) == 0 )
-                return true; 
+                return true;
 
         $comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1");
         $post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID='$comment->comment_post_ID' LIMIT 1");
@@ -653 +653 @@
 }
 endif;
 
+if ( !function_exists('wp_update_links') ) :
+// the links update function
+function wp_update_links() {
+        require_once( ABSPATH . 'wp-includes/rss.php');
+
+        if ( !get_option('use_linksupdate') )
+                wp_die(__('Feature disabled.'));
+
+        $link_rsses = $wpdb->get_col("SELECT link_rss FROM $wpdb->links");
+        if ( !$link_rsses )
+                wp_die(__('No links'));
+
+        foreach ($link_rsses as $rssurl)
+        {
+                $feed = fetch_rss($rssurl);
+                $mod = $feed->last_modified;
+                if ($mod != null) {
+                        $modtime = strtotime($mod);
+                        if ($modtime !== false && $modtime !== -1) { // php 5.1 and up returns false on failure, prev versions return -1
+                                $wpdb->query("UPDATE $wpdb->links SET link_updated = FROM_UNIXTIME($modtime) WHERE link_rss = '$rssurl'");
+                        }
+                }
+        }
+}
+endif;
+
+if ( !function_exists('wp_links_update_change') ) :
+// the update_links scheduler function
+function wp_links_update_change($oldvalue, $newvalue) {
+
+        if ($oldvalue == $newvalue) return;
+
+        if ($newvalue == 1) {
+                wp_schedule_event(time(), apply_filters('update_links_schedule','daily'), 'update_links');
+        }
+        else {
+                wp_clear_scheduled_hook('update_links');
+        }
+}
+endif;
+
 ?>