From e4efc3f4f4f3f66842d6208c65b79f1eacad961e Mon Sep 17 00:00:00 2001
From: Kimberly <amiga-500@users.noreply.github.com>
Date: Thu, 18 Aug 2016 04:41:12 -0400
Subject: [PATCH] Update PgCacheAdminEnvironment.php

Apache 2.4+ has deprecated the "Allow, Deny, and Order" directives in .htaccess, in favor of "Require".  Such servers would now be required to load the "mod_access_compat" module to regain "Allow, Deny, and Order" (unlike pre-2.4).    For w3tc's "Enable Compatibility Mode" to function correctly on servers that have upgraded i've put in the appropriate module condition check.
---
 lib/W3/PgCacheAdminEnvironment.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/W3/PgCacheAdminEnvironment.php b/lib/W3/PgCacheAdminEnvironment.php
index ac39df7..008108e 100644
--- a/lib/W3/PgCacheAdminEnvironment.php
+++ b/lib/W3/PgCacheAdminEnvironment.php
@@ -1141,7 +1141,12 @@ private function rules_cache_generate_apache($config) {
 
             // allow to read files by apache if they are blocked at some level above
             $rules .= "<Files ~ \"\.(html|html_gzip|xml|xml_gzip)$\">\n";
-            $rules .= "  Allow from all\n";
+            $rules .= "  <IfModule mod_authz_host.c>\n";
+            $rules .= "    Require all granted\n";
+            $rules .= "  </IfModule>\n";
+            $rules .= "  <IfModule !mod_authz_host.c>\n";
+            $rules .= "    Allow from all\n";
+            $rules .= "  </IfModule>\n";
             $rules .= "</Files>\n";
 
             if (!$etag) {