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diff --git a/smarty/Smarty-2.6.10/libs/internals/core.is_secure.php b/smarty/Smarty-2.6.10/libs/internals/core.is_secure.php
new file mode 100644
index 0000000..9bec5c2
--- /dev/null
+++ b/smarty/Smarty-2.6.10/libs/internals/core.is_secure.php
@@ -0,0 +1,59 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+/**
+ * determines if a resource is secure or not.
+ *
+ * @param string $resource_type
+ * @param string $resource_name
+ * @return boolean
+ */
+
+//  $resource_type, $resource_name
+
+function smarty_core_is_secure($params, &$smarty)
+{
+    if (!$smarty->security || $smarty->security_settings['INCLUDE_ANY']) {
+        return true;
+    }
+
+    if ($params['resource_type'] == 'file') {
+        $_rp = realpath($params['resource_name']);
+        if (isset($params['resource_base_path'])) {
+            foreach ((array)$params['resource_base_path'] as $curr_dir) {
+                if ( ($_cd = realpath($curr_dir)) !== false &&
+                     strncmp($_rp, $_cd, strlen($_cd)) == 0 &&
+                     $_rp{strlen($_cd)} == DIRECTORY_SEPARATOR ) {
+                    return true;
+                }
+            }
+        }
+        if (!empty($smarty->secure_dir)) {
+            foreach ((array)$smarty->secure_dir as $curr_dir) {
+                if ( ($_cd = realpath($curr_dir)) !== false) {
+                    if( strncmp($_rp, $_cd, strlen($_cd)) == 0 &&
+                     $_rp{strlen($_cd)} == DIRECTORY_SEPARATOR ) {
+                        return true;
+                    } elseif ($_cd == $_rp) {
+                        return true;
+                    }
+                }
+            }
+        }
+    } else {
+        // resource is not on local file system
+        return call_user_func_array(
+            $smarty->_plugins['resource'][$params['resource_type']][0][2],
+            array($params['resource_name'], &$smarty));
+    }
+
+    return false;
+}
+
+/* vim: set expandtab: */
+
+?>