--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/external/external.inc	Fri Feb 20 14:04:09 2009 +0000
@@ -0,0 +1,37 @@
+<?php
+// $Id: external.inc,v 1.1.2.1.2.2 2009/02/16 17:06:48 jeremy Exp $
+
+/**
+ * @file
+ * Loads external ad.
+ *
+ * Copyright (c) 2006-2009.
+ *   Jeremy Andrews <jeremy@tag1consulting.com>.
+ */
+
+adserve_variable('ad_dir', getcwd() .'/');
+
+// Attempt to utilize the file cache, if enabled.
+if (function_exists('ad_cache_file_get_lock')) {
+
+  // Find the top level Drupal directory so we can access the cache files.
+  for ($i = 1; $i <= 20; $i++) {
+    if (file_exists('./includes/bootstrap.inc')) {
+      break;
+    }
+    chdir('..');
+  }
+  adserve_variable('root_dir', getcwd());
+
+  $cache_file = ad_cache_file_get_lock();
+  if ($cache_file) {
+    $cache = unserialize(fread(adserve_variable('fd'), filesize($cache_file)));
+    if (isset($cache['ad_external'])) {
+      $aid = adserve_variable('nids');
+      if ($aid && isset($cache['ad_external'][$aid]['contents'])) {
+        print $cache['ad_external'][$aid]['contents'];
+        exit(0);
+      }
+    }
+  }
+}