From 589b20473cc6b8fbe21d3cd5e2f7d80a405b44b4 Mon Sep 17 00:00:00 2001
From: Jamie Cameron <jcameron@webmin.com>
Date: Mon, 14 May 2007 16:09:08 +0000
Subject: [PATCH] Safer caching of OS

---
 webmin/webmin-lib.pl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/webmin/webmin-lib.pl b/webmin/webmin-lib.pl
index 862282c0d..52767ab5b 100644
--- a/webmin/webmin-lib.pl
+++ b/webmin/webmin-lib.pl
@@ -790,7 +790,9 @@ if ($cache) {
 	local %cache;
 	local $uptime = &get_system_uptime();
 	local $lastreboot = $uptime ? time()-$uptime : undef;
-	if (&read_file($detect_operating_system_cache, \%cache)) {
+	if (&read_file($detect_operating_system_cache, \%cache) &&
+	    $cache{'os_type'} && $cache{'os_version'} &&
+	    $cache{'real_os_type'} && $cache{'real_os_version'}) {
 		if ($cache{'time'} > time()-24*60*60 &&
 		    $cache{'time'} > $lastreboot) {
 			return %cache;