new file mode 100644
--- /dev/null
+++ b/library/smarty/libs/sysplugins/smarty_internal_extension_config.php
@@ -0,0 +1,154 @@
+<?php
+
+/**
+ * @package    Smarty
+ * @subpackage PluginsInternal
+ */
+class Smarty_Internal_Extension_Config {
+    /**
+     * @param        $obj
+     * @param        $config_file
+     * @param null $sections
+     * @param string $scope
+     */
+    static function configLoad($obj, $config_file, $sections = null, $scope = 'local') {
+        $smarty = isset($obj->smarty) ? $obj->smarty : $obj;
+        $confObj = new $smarty->template_class($config_file, $smarty, $obj);
+        $confObj->caching = Smarty::CACHING_OFF;
+        $confObj->source = Smarty_Template_Config::load($confObj);
+        $confObj->source->config_sections = $sections;
+        $confObj->source->scope = $scope;
+        $confObj->compiled = Smarty_Template_Compiled::load($confObj);
+        if ($confObj->smarty->debugging) {
+            Smarty_Internal_Debug::start_render($confObj);
+        }
+        $confObj->compiled->render($confObj);
+        if ($confObj->smarty->debugging) {
+            Smarty_Internal_Debug::end_render($confObj);
+        }
+        if ($obj instanceof Smarty_Internal_Template) {
+            $obj->properties['file_dependency'][$confObj->source->uid] = array($confObj->source->filepath, $confObj->source->timestamp, $confObj->source->type);
+        }
+    }
+
+    /**
+     * load config variables
+     *
+     * @param mixed $sections array of section names, single section or null
+     * @param string $scope global,parent or local
+     *
+     * @throws Exception
+     */
+    static function loadConfigVars($_template, $_config_vars) {
+        $scope = $_template->source->scope;
+        // pointer to scope (local scope is parent of template object
+        $scope_ptr = $_template->parent;
+        if ($scope == 'parent') {
+            if (isset($_template->parent->parent)) {
+                $scope_ptr = $_template->parent->parent;
+            }
+        } elseif ($scope == 'root' || $scope == 'global') {
+            while (isset($scope_ptr->parent)) {
+                $scope_ptr = $scope_ptr->parent;
+            }
+        }
+        // copy global config vars
+        foreach ($_config_vars['vars'] as $variable => $value) {
+            if ($_template->smarty->config_overwrite || !isset($scope_ptr->config_vars[$variable])) {
+                $scope_ptr->config_vars[$variable] = $value;
+            } else {
+                $scope_ptr->config_vars[$variable] = array_merge((array)$scope_ptr->config_vars[$variable], (array)$value);
+            }
+        }
+        // scan sections
+        $sections = $_template->source->config_sections;
+        if (!empty($sections)) {
+            foreach ((array)$sections as $_template_section) {
+                if (isset($_config_vars['sections'][$_template_section])) {
+                    foreach ($_config_vars['sections'][$_template_section]['vars'] as $variable => $value) {
+                        if ($_template->smarty->config_overwrite || !isset($scope_ptr->config_vars[$variable])) {
+                            $scope_ptr->config_vars[$variable] = $value;
+                        } else {
+                            $scope_ptr->config_vars[$variable] = array_merge((array)$scope_ptr->config_vars[$variable], (array)$value);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns a single or all config variables
+     *
+     * @param  string $varname variable name or null
+     * @param bool $search_parents
+     *
+     * @return string variable value or or array of variables
+     */
+    static function getConfigVars($obj, $varname = null, $search_parents = true) {
+        $_ptr = $obj;
+        $var_array = array();
+        while ($_ptr !== null) {
+            if (isset($varname)) {
+                if (isset($_ptr->config_vars[$varname])) {
+                    return $_ptr->config_vars[$varname];
+                }
+            } else {
+                $var_array = array_merge($_ptr->config_vars, $var_array);
+            }
+            // not found, try at parent
+            if ($search_parents) {
+                $_ptr = $_ptr->parent;
+            } else {
+                $_ptr = null;
+            }
+        }
+        if (isset($varname)) {
+            return '';
+        } else {
+            return $var_array;
+        }
+    }
+
+    /**
+     * gets  a config variable
+     *
+     * @param  string $variable the name of the config variable
+     * @param bool $error_enable
+     *
+     * @return mixed  the value of the config variable
+     */
+    static function getConfigVariable($obj, $variable, $error_enable = true) {
+        $_ptr = $obj;
+        while ($_ptr !== null) {
+            if (isset($_ptr->config_vars[$variable])) {
+                // found it, return it
+                return $_ptr->config_vars[$variable];
+            }
+            // not found, try at parent
+            $_ptr = $_ptr->parent;
+        }
+        if ($obj->error_unassigned && $error_enable) {
+            // force a notice
+            $x = $$variable;
+        }
+
+        return null;
+    }
+
+    /**
+     * remove a single or all config variables
+     *
+     * @param  string $name variable name or null
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    static function clearConfig($obj, $name = null) {
+        if (isset($name)) {
+            unset($obj->config_vars[$name]);
+        } else {
+            $obj->config_vars = array();
+        }
+        return $obj;
+    }
+}