Index: relatedlinks.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/relatedlinks/relatedlinks.module,v
retrieving revision 1.41
diff -u -F^f -r1.41 relatedlinks.module
--- relatedlinks.module	8 Nov 2006 22:01:59 -0000	1.41
+++ relatedlinks.module	13 Nov 2006 17:11:44 -0000
@@ -115,11 +115,17 @@ function relatedlinks_block($op = 'list'
           $blocks[$type]['info'] = t('Related links: ') . check_plain($config['name']);
         }
       }
-
+      
+      // use block #9 to leave some room for more types
+      $blocks[9]['info'] = t('Backinks');
       return $blocks;
     case 'view':
       // This is only valid if we're looking at a node now.
       if (arg(0) == 'node' && is_numeric(arg(1))) {
+        if ($delta == 9) {
+          return relatedlinks_block_backlinks(arg(1));
+        }
+        
         $block = array();
         $node = node_load(arg(1));
         // Only display if node type is associated with this module.
@@ -167,6 +173,25 @@ function relatedlinks_block($op = 'list'
 }
 
 /**
+* Return a block if other nodes are linking to the specified node. 
+*
+* @param $nid
+*   The node id to which other nodes link
+* 
+* @return $links
+*   An associative array containing 'subject' and 'content' elements as usual for Drupal blocks
+ */
+function relatedlinks_block_backlinks($nid) {
+  $sql = "SELECT n.title, n.nid FROM  {relatedlinks} r INNER JOIN {node} n ON r.nid = n.nid WHERE url LIKE '/node/%d' AND n.status = 1";
+  $result = db_query($sql, $nid);
+  if (db_num_rows($result)) {
+    $block['content'] = node_title_list($result);
+    $block['subject'] = t('Backlinks');
+    return $block;
+  }
+}
+
+/**
  * Implementation of hook_nodeapi().
  *
  * @TODO: Move the parsed links filtering into a filter_process(). The current