From 954337c8f449503ac70b6ce1acdcc40dc75790b8 Mon Sep 17 00:00:00 2001
From: Remigijus Kiminas <remdex@gmail.com>
Date: Tue, 5 Oct 2021 05:14:31 -0400
Subject: [PATCH] No cache for logged sessions

---
 lhc_web/lib/core/lhcore/lhmodule.php      | 3 +++
 lhc_web/modules/lhchat/chat.php           | 4 ++++
 lhc_web/modules/lhchat/chatwidgetchat.php | 3 +++
 3 files changed, 10 insertions(+)

diff --git a/lhc_web/lib/core/lhcore/lhmodule.php b/lhc_web/lib/core/lhcore/lhmodule.php
index 6bb46d1352..2b76d13c72 100644
--- a/lhc_web/lib/core/lhcore/lhmodule.php
+++ b/lhc_web/lib/core/lhcore/lhmodule.php
@@ -38,6 +38,9 @@ static function runModule()
             {
             	// Just to start session
             	$currentUser = erLhcoreClassUser::instance();
+                header('Cache-Control: nocache, no-store, max-age=0, must-revalidate');
+                header('Pragma: no-cache');
+                header('Expires: Sun, 02 Jan 1990 00:00:00 GMT');
 
                 if (!$currentUser->hasAccessTo('lh'.self::$currentModuleName,$Params['module']['functions']))
                 {
diff --git a/lhc_web/modules/lhchat/chat.php b/lhc_web/modules/lhchat/chat.php
index e49e16579b..daff1ca05c 100644
--- a/lhc_web/modules/lhchat/chat.php
+++ b/lhc_web/modules/lhchat/chat.php
@@ -1,5 +1,9 @@
 <?php
 
+header('Cache-Control: nocache, no-store, max-age=0, must-revalidate');
+header('Pragma: no-cache');
+header('Expires: Sun, 02 Jan 1990 00:00:00 GMT');
+
 $tpl = erLhcoreClassTemplate::getInstance( 'lhchat/chat.tpl.php');
 
 if (isset($Params['user_parameters_unordered']['theme']) && (int)$Params['user_parameters_unordered']['theme'] > 0) {
diff --git a/lhc_web/modules/lhchat/chatwidgetchat.php b/lhc_web/modules/lhchat/chatwidgetchat.php
index e54f665bac..fdc2a35245 100644
--- a/lhc_web/modules/lhchat/chatwidgetchat.php
+++ b/lhc_web/modules/lhchat/chatwidgetchat.php
@@ -2,6 +2,9 @@
 
 // For IE to support headers if chat is installed on different domain
 header('P3P:CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"');
+header('Cache-Control: nocache, no-store, max-age=0, must-revalidate');
+header('Pragma: no-cache');
+header('Expires: Sun, 02 Jan 1990 00:00:00 GMT');
 
 $tpl = erLhcoreClassTemplate::getInstance( 'lhchat/chat.tpl.php');