diff --git a/helper/zabbix.rpc.php b/helper/zabbix.rpc.php
index e1bfbd7..dfec4b0 100644
--- a/helper/zabbix.rpc.php
+++ b/helper/zabbix.rpc.php
@@ -1,3 +1,34 @@
 <?php
 // @file zabbix.rpc.php
 
+if(!check_function_exists("zabbix_get_base_url")) {
+  function zabbix_get_base_url() {
+    return "http://localhost";
+  }
+}
+
+if(!check_function_exists("zabbix_authenticate")) {
+  function zabbix_authenticate($username, $password) {
+    $response = false;
+    
+    if(loadHelper("webpagetool")) {
+      $response = get_web_json(zabbix_get_base_url() . "/zabbix/api_jsonrpc.php", "post", array(
+        "headers" => array(
+          "Content-Type" => "application/json-rpc",
+        ),
+        "data" => array(
+          "jsonrpc" => "2.0",
+          "method" => "user.login",
+          "params" => array(
+            "user" => $username,
+            "password" => $password,
+          ),
+          "id" => 1,
+          "auth" => null,
+        ),
+      ));
+    }
+
+    return $response;
+  }
+}