1 files changed, 110 insertions, 0 deletions
diff --git a/package/firewall/files/lib/core_rule.sh b/package/firewall/files/lib/core_rule.sh
new file mode 100644
index 000000000..f49c42af5
--- /dev/null
+++ b/package/firewall/files/lib/core_rule.sh
@@ -0,0 +1,110 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_rule() {
+	[ "${rule_NAME}" != "$1" ] || return
+	fw_config_get_section "$1" rule { \
+		string _name "$1" \
+		string name "" \
+		string src "" \
+		ipaddr src_ip "" \
+		string src_mac "" \
+		string src_port "" \
+		string dest "" \
+		ipaddr dest_ip "" \
+		string dest_port "" \
+		string icmp_type "" \
+		string proto "tcpudp" \
+		string target "" \
+		string family "" \
+		string limit "" \
+		string limit_burst "" \
+		string extra "" \
+	} || return
+	[ -n "$rule_name" ] || rule_name=$rule__name
+}
+
+fw_load_rule() {
+	fw_config_get_rule "$1"
+
+	[ "$rule_target" != "NOTRACK" ] || [ -n "$rule_src" ] || [ "$rule_src" != "*" ] || {
+		fw_log error "NOTRACK rule ${rule_name}: needs src, skipping"
+		return 0
+	}
+
+	fw_callback pre rule
+
+	local table=f
+	local chain=input
+	local target="${rule_target:-REJECT}"
+	if [ "$target" == "NOTRACK" ]; then
+		table=r
+		chain="zone_${rule_src}_notrack"
+	else
+		if [ -n "$rule_src" ]; then
+			if [ "$rule_src" != "*" ]; then
+				chain="zone_${rule_src}${rule_dest:+_forward}"
+			else
+				chain="${rule_dest:+forward}"
+				chain="${chain:-input}"
+			fi
+		fi
+
+		if [ -n "$rule_dest" ]; then
+			if [ "$rule_dest" != "*" ]; then
+				target="zone_${rule_dest}_${target}"
+			elif [ "$target" = REJECT ]; then
+				target=reject
+			fi
+		fi
+	fi
+
+	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}"
+
+	[ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp"
+	local pr; for pr in $rule_proto; do
+		local sports dports itypes
+		case "$pr" in
+			icmp|icmpv6|1|58)
+				sports=""; dports=""
+				itypes="$rule_icmp_type"
+			;;
+			*)
+				sports="$rule_src_port"
+				dports="$rule_dest_port"
+				itypes=""
+			;;
+		esac
+	
+		fw_get_negation pr '-p' "$pr"
+		local sp; for sp in ${sports:-""}; do
+			fw_get_port_range sp $sp
+			fw_get_negation sp '--sport' "$sp"
+			local dp; for dp in ${dports:-""}; do
+				fw_get_port_range dp $dp
+				fw_get_negation dp '--dport' "$dp"
+				local sm; for sm in ${rule_src_mac:-""}; do
+					fw_get_negation sm '--mac-source' "$sm"
+					local it; for it in ${itypes:-""}; do
+						fw_get_negation it '--icmp-type' "$it"
+						fw add $mode $table $chain $target + \
+							{ $rule_src_ip $rule_dest_ip } { \
+							$src_spec $dest_spec \
+							$pr $sp $dp $it \
+							${sm:+-m mac $sm} \
+							${rule_limit:+-m limit --limit $rule_limit \
+								${rule_limit_burst:+--limit-burst $rule_limit_burst}} \
+							$rule_extra \
+						}
+					done
+				done
+			done
+		done
+	done
+
+	fw_callback post rule
+}