From 1efeaa35d1f86cc6e962180db9e90fc7f1698061 Mon Sep 17 00:00:00 2001
From: jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 28 Sep 2010 10:42:56 +0000
Subject: [package] fireall: 	- support negations for src_ip, dest_ip,
 src_dip options in rules and redirects 	- add NOTRACK target to rule
 sections, allows to define fine grained notrack rules

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23141 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/firewall/files/lib/core_rule.sh | 37 ++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 17 deletions(-)

(limited to 'package/firewall/files/lib/core_rule.sh')

diff --git a/package/firewall/files/lib/core_rule.sh b/package/firewall/files/lib/core_rule.sh
index 1e4afe5af..dbaf1102e 100644
--- a/package/firewall/files/lib/core_rule.sh
+++ b/package/firewall/files/lib/core_rule.sh
@@ -24,42 +24,45 @@ fw_config_get_rule() {
 fw_load_rule() {
 	fw_config_get_rule "$1"
 
+	[ "$rule_target" != "NOTRACK" ] || [ -n "$rule_src" ] || {
+		fw_log error "NOTRACK rule ${rule_name}: needs src, skipping"
+		return 0
+	}
+
 	fw_callback pre rule
 
 	fw_get_port_range rule_src_port $rule_src_port
 	fw_get_port_range rule_dest_port $rule_dest_port
 
+	local table=f
 	local chain=input
-	[ -n "$rule_src" ] && {
-		[ -z "$rule_dest" ] && {
-			chain=zone_${rule_src}
-		} || {
-			chain=zone_${rule_src}_forward
-		}
-	}
+	if [ "$rule_target" == "NOTRACK" ]; then
+		table=r
+		chain="zone_${rule_src}_notrack"
+	elif [ -n "$rule_src" ]; then
+		chain="zone_${rule_src}${rule_dest:+_forward}"
+	fi
 
-	local target=$rule_target
-	[ -z "$target" ] && {
-		target=REJECT
-	}
-	[ -n "$dest" ] && {
-		target=zone_${rule_dest}_${target}
-	}
+	local target="${rule_target:-REJECT}"
+	[ -n "$dest" ] && target="zone_${rule_dest}_${target}"
 
 	local mode
 	fw_get_family_mode mode ${rule_family:-x} $rule_src I
 
+	local src_spec dest_spec
+	fw_get_negation src_spec '-s' "${rule_src_ip:+$rule_src_ip/$rule_src_ip_prefixlen}"
+	fw_get_negation dest_spec '-d' "${rule_dest_ip:+$rule_dest_ip/$rule_dest_ip_prefixlen}"
+
 	local rule_pos
 	eval 'rule_pos=$((++FW__RULE_COUNT_'$mode'_'$chain'))'
 
 	[ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp"
 	for rule_proto in $rule_proto; do
-		fw add $mode f $chain $target $rule_pos { $rule_src_ip $rule_dest_ip } { \
+		fw add $mode $table $chain $target $rule_pos { $rule_src_ip $rule_dest_ip } { \
+			$src_spec $dest_spec \
 			${rule_proto:+-p $rule_proto} \
-			${rule_src_ip:+-s $rule_src_ip/$rule_src_ip_prefixlen} \
 			${rule_src_port:+--sport $rule_src_port} \
 			${rule_src_mac:+-m mac --mac-source $rule_src_mac} \
-			${rule_dest_ip:+-d $rule_dest_ip/$rule_dest_ip_prefixlen} \
 			${rule_dest_port:+--dport $rule_dest_port} \
 			${rule_icmp_type:+--icmp-type $rule_icmp_type} \
 		}
-- 
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