Index: vud.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/vote_up_down/vud.module,v
retrieving revision 1.2
diff -u -r1.2 vud.module
--- vud.module	31 May 2010 03:59:39 -0000	1.2
+++ vud.module	23 Jun 2010 17:13:34 -0000
@@ -5,6 +5,8 @@
  * @file
  * Implements the core voting module on top of Voting API.
  */
+ 
+define('VUD_VOTER_OWN',  'vud_voter_own');//need it for option to disallow voting on own content
 
 module_load_include('inc', 'vud', 'vud.theme');  // Include the theme.inc file.
 
@@ -29,6 +31,12 @@
     '#default_value' => variable_get('vud_tag', 'vote'),
     '#description'   => t('Since Vote Up/Down uses Voting API, all votes will be tagged with this term. (default: vote)<br />This tag is useful is you have deployed various modules that use Voting API. It should always be a unique value. Usually, there is NO need to change this.'),
   );
+  $form[VUD_VOTER_OWN] = array(
+      '#type'          => 'checkbox',
+      '#title'         => t('Vote on own content'),
+      '#description'   => t('Should a voter be allowed to vote on their own content? Check this if users are allowed to vote up their own content.'),
+      '#default_value' => variable_get(VUD_VOTER_OWN, 0),
+    );
   $form['vud_message_on_deny'] = array(
     '#type'          => 'checkbox',
     '#title'         => t('Message on denied permission'),
Index: vud.theme.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/vote_up_down/vud.theme.inc,v
retrieving revision 1.3
diff -u -r1.3 vud.theme.inc
--- vud.theme.inc	20 Jun 2010 17:44:32 -0000	1.3
+++ vud.theme.inc	23 Jun 2010 17:26:02 -0000
@@ -301,6 +301,18 @@
  * Function for the main voting handler with Ajax support.
  */
 function vud_vote($type, $content_id, $value, $tag, $widget, $token) {
+  ctools_include('ajax');
+  global $user;
+  
+   if (!variable_get(VUD_VOTER_OWN, 0)) {
+     // Get the content item's uid
+     $uid = vud_get_content_uid($type, $content_id);
+ 
+     // User cannot vote up/down their own content
+     if ($uid == $user->uid) {
+             ctools_ajax_render_error('Users cannot vote up/down their own content.');
+     }
+   }
   if (is_numeric($value) && drupal_valid_token($token, "vote/$type/$content_id/$value/$tag/$widget")) {
     $vote = array();
     // Sanity-check the incoming values.
@@ -356,3 +368,17 @@
     drupal_goto($_SERVER['HTTP_REFERER']);
   }
 }
+
+function vud_get_content_uid($type, $cid) {
+  // Get the content item's uid.
+  // We don't do full node_load() here for performance reasons
+  if ($type == 'node') {
+    return db_result(db_query('SELECT uid FROM {node} WHERE nid = %d', $cid));
+  }
+  else if ($type == 'comment') {
+    return db_result(db_query('SELECT uid FROM {comments} WHERE cid = %d', $cid));
+  }
+  else {
+    return 0;
+  }
+}