[backfire] merge dual stack firewall

[openwrt-10.03/.git] / 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
new file mode 100644 (file)
index 0000000..8c234a3
--- /dev/null
+++ b/package/firewall/files/lib/core_rule.sh
@@ -0,0 +1,71 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_rule() {
+       [ "${rule_NAME}" != "$1" ] || return
+       fw_config_get_section "$1" rule { \
+               string _name "$1" \
+               string name "" \
+               string src "" \
+               ipaddr src_ip "" \
+               string src_mac "" \
+               string src_port "" \
+               string dest "" \
+               ipaddr dest_ip "" \
+               string dest_port "" \
+               string icmp_type "" \
+               string proto "tcpudp" \
+               string target "" \
+               string family "" \
+       } || return
+       [ -n "$rule_name" ] || rule_name=$rule__name
+       [ "$rule_proto" == "icmp" ] || rule_icmp_type=
+}
+
+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 $rule_dest_port
+
+       local table=f
+       local chain=input
+       local target="${rule_target:-REJECT}"
+       if [ "$target" == "NOTRACK" ]; then
+               table=r
+               chain="zone_${rule_src}_notrack"
+       else
+               [ -n "$rule_src" ] && chain="zone_${rule_src}${rule_dest:+_forward}"
+               [ -n "$rule_dest" ] && target="zone_${rule_dest}_${target}"
+       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"
+       for rule_proto in $rule_proto; do
+               local rule_pos
+               eval 'rule_pos=$((++FW__RULE_COUNT_'${mode#G}'_'$chain'))'
+
+               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_port:+--sport $rule_src_port} \
+                       ${rule_src_mac:+-m mac --mac-source $rule_src_mac} \
+                       ${rule_dest_port:+--dport $rule_dest_port} \
+                       ${rule_icmp_type:+--icmp-type $rule_icmp_type} \
+               }
+       done
+
+       fw_callback post rule
+}