1 # Copyright (C) 2009-2010 OpenWrt.org
3 fw_config_get_redirect
() {
4 [ "${redirect_NAME}" != "$1" ] ||
return
5 fw_config_get_section
"$1" redirect
{ \
18 string proto
"tcpudp" \
20 string target
"DNAT" \
22 [ -n "$redirect_name" ] || redirect_name
=$redirect__name
26 fw_config_get_redirect
"$1"
28 fw_callback pre redirect
30 local fwdchain natchain natopt nataddr natports srcdaddr srcdports
31 if [ "$redirect_target" == "DNAT" ]; then
32 [ -n "$redirect_src" -a -n "$redirect_dest_ip$redirect_dest_port" ] ||
{
33 fw_log error
"DNAT redirect ${redirect_name}: needs src and dest_ip or dest_port, skipping"
37 fwdchain
="zone_${redirect_src}${redirect_dest_ip:+_forward}"
39 natopt
="--to-destination"
40 natchain
="zone_${redirect_src}_prerouting"
41 nataddr
="$redirect_dest_ip"
42 fw_get_port_range natports
"$redirect_dest_port" "-"
44 fw_get_negation srcdaddr
'-d' "${redirect_src_dip:+$redirect_src_dip/$redirect_src_dip_prefixlen}"
45 fw_get_port_range srcdports
"$redirect_src_dport" ":"
47 list_contains FW_CONNTRACK_ZONES
$redirect_src || \
48 append FW_CONNTRACK_ZONES
$redirect_src
50 elif [ "$redirect_target" == "SNAT" ]; then
51 [ -n "$redirect_dest" -a -n "$redirect_src_dip" ] ||
{
52 fw_log error
"SNAT redirect ${redirect_name}: needs dest and src_dip, skipping"
56 fwdchain
="${redirect_src:+zone_${redirect_src}_forward}"
59 natchain
="zone_${redirect_dest}_nat"
60 nataddr
="$redirect_src_dip"
61 fw_get_port_range natports
"$redirect_src_dport" "-"
63 fw_get_negation srcdaddr
'-d' "${redirect_dest_ip:+$redirect_dest_ip/$redirect_dest_ip_prefixlen}"
64 fw_get_port_range srcdports
"$redirect_dest_port" ":"
66 list_contains FW_CONNTRACK_ZONES
$redirect_dest || \
67 append FW_CONNTRACK_ZONES
$redirect_dest
70 fw_log error
"redirect ${redirect_name}: target must be either DNAT or SNAT, skipping"
75 fw_get_family_mode mode
${redirect_family:-x} ${redirect_src:-$redirect_dest} I
78 fw_get_negation srcaddr
'-s' "${redirect_src_ip:+$redirect_src_ip/$redirect_src_ip_prefixlen}"
81 fw_get_port_range srcports
"$redirect_src_port" ":"
84 fw_get_negation destaddr
'-d' "${redirect_dest_ip:+$redirect_dest_ip/$redirect_dest_ip_prefixlen}"
87 fw_get_port_range destports
"${redirect_dest_port:-$redirect_src_dport}" ":"
89 [ "$redirect_proto" == "tcpudp" ] && redirect_proto
="tcp udp"
90 for redirect_proto
in $redirect_proto; do
92 eval 'pos=$((++FW__REDIR_COUNT_'${mode#G}'_'$natchain'))'
94 fw add
$mode n
$natchain $redirect_target $pos { $redirect_src_ip $redirect_dest_ip } { \
96 ${redirect_proto:+-p $redirect_proto} \
97 ${srcports:+--sport $srcports} \
98 ${srcdports:+--dport $srcdports} \
99 ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
100 $natopt $nataddr${natports:+:$natports} \
103 fw add
$mode f
${fwdchain:-forward} ACCEPT ^
{ $redirect_src_ip $redirect_dest_ip } { \
104 $srcaddr ${destaddr:--m conntrack --ctstate DNAT} \
105 ${redirect_proto:+-p $redirect_proto} \
106 ${srcports:+--sport $srcports} \
107 ${destports:+--dport $destports} \
108 ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
112 fw_callback post redirect