From d050c7240e2a3d4c1de906fea7e48f926d876098 Mon Sep 17 00:00:00 2001
From: Dietmar Maurer <dietmar@proxmox.com>
Date: Tue, 18 Feb 2014 12:40:02 +0100
Subject: [PATCH] check chain name length (max 28 chars)

---
 PVE/Firewall.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/PVE/Firewall.pm b/PVE/Firewall.pm
index 2c5e6b4..be9b847 100644
--- a/PVE/Firewall.pm
+++ b/PVE/Firewall.pm
@@ -258,6 +258,8 @@ sub ruleset_generate_rule {
 sub ruleset_create_chain {
     my ($ruleset, $chain) = @_;
 
+    die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
+
     die "chain '$chain' already exists\n" if $ruleset->{$chain};
 
     $ruleset->{$chain} = [];
-- 
2.39.2