From: Stefan Schantl <stefan.schantl@ipfire.org>
Date: Mon, 4 Apr 2022 19:43:20 +0000 (+0200)
Subject: rules.pl: Add function to check if given firewall chain exists.
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=960608c8b50e711a5409594529744c0705f2dd58;p=people%2Fstevee%2Fipfire-2.x.git

rules.pl: Add function to check if given firewall chain exists.

Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
---

diff --git a/config/firewall/rules.pl b/config/firewall/rules.pl
index c12e8fa6e4..1bd2920591 100644
--- a/config/firewall/rules.pl
+++ b/config/firewall/rules.pl
@@ -976,6 +976,14 @@ sub firewall_is_in_subnet {
 	return 0;
 }
 
+sub firewall_chain_exists ($) {
+	my ($chain) = @_;
+
+	my $ret = &General::system("iptables", "--wait", "-n", "-L", "$chain");
+
+	return $ret;
+}
+
 sub ipset_get_sets () {
 	my @sets;