You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.9 KiB
Bash
131 lines
3.9 KiB
Bash
# Copyright (C) 2009-2010 OpenWrt.org
|
|
|
|
fw_config_get_redirect() {
|
|
[ "${redirect_NAME}" != "$1" ] || return
|
|
fw_config_get_section "$1" redirect { \
|
|
string _name "$1" \
|
|
string name "" \
|
|
string src "" \
|
|
ipaddr src_ip "" \
|
|
ipaddr src_dip "" \
|
|
string src_mac "" \
|
|
string src_port "" \
|
|
string src_dport "" \
|
|
string dest "" \
|
|
ipaddr dest_ip "" \
|
|
string dest_port "" \
|
|
string proto "tcpudp" \
|
|
string family "" \
|
|
string target "DNAT" \
|
|
string extra "" \
|
|
} || return
|
|
[ -n "$redirect_name" ] || redirect_name=$redirect__name
|
|
}
|
|
|
|
fw_load_redirect() {
|
|
fw_config_get_redirect "$1"
|
|
|
|
fw_callback pre redirect
|
|
|
|
local fwdchain natchain natopt nataddr natports srcdaddr srcdports
|
|
if [ "$redirect_target" == "DNAT" ]; then
|
|
[ -n "${redirect_src#*}" -a -n "$redirect_dest_ip$redirect_dest_port" ] || {
|
|
fw_log error "DNAT redirect ${redirect_name}: needs src and dest_ip or dest_port, skipping"
|
|
return 0
|
|
}
|
|
|
|
fwdopt=""
|
|
fwdchain=""
|
|
|
|
# Check whether only ports are given or whether the given dest ip is local,
|
|
# in this case match only DNATed traffic and allow it on input, not forward
|
|
if [ -z "$redirect_dest_ip" ] || /sbin/ifconfig | grep -qE "addr:${redirect_dest_ip//./\\.}\b"; then
|
|
fwdopt="-m conntrack --ctstate DNAT"
|
|
fwdchain="zone_${redirect_src}"
|
|
else
|
|
fwdchain="zone_${redirect_src}_forward"
|
|
fi
|
|
|
|
natopt="--to-destination"
|
|
natchain="zone_${redirect_src}_prerouting"
|
|
nataddr="$redirect_dest_ip"
|
|
fw_get_port_range natports "${redirect_dest_port#!}" "-"
|
|
|
|
fw_get_negation srcdaddr '-d' "${redirect_src_dip:+$redirect_src_dip/$redirect_src_dip_prefixlen}"
|
|
fw_get_port_range srcdports "$redirect_src_dport" ":"
|
|
fw_get_negation srcdports '--dport' "$srcdports"
|
|
|
|
list_contains FW_CONNTRACK_ZONES $redirect_src || \
|
|
append FW_CONNTRACK_ZONES $redirect_src
|
|
|
|
elif [ "$redirect_target" == "SNAT" ]; then
|
|
[ -n "${redirect_dest#*}" -a -n "$redirect_src_dip" ] || {
|
|
fw_log error "SNAT redirect ${redirect_name}: needs dest and src_dip, skipping"
|
|
return 0
|
|
}
|
|
|
|
fwdchain="${redirect_src:+zone_${redirect_src}_forward}"
|
|
|
|
natopt="--to-source"
|
|
natchain="zone_${redirect_dest}_nat"
|
|
nataddr="$redirect_src_dip"
|
|
fw_get_port_range natports "${redirect_src_dport#!}" "-"
|
|
|
|
fw_get_negation srcdaddr '-d' "${redirect_dest_ip:+$redirect_dest_ip/$redirect_dest_ip_prefixlen}"
|
|
fw_get_port_range srcdports "$redirect_dest_port" ":"
|
|
fw_get_negation srcdports '--dport' "$srcdports"
|
|
|
|
list_contains FW_CONNTRACK_ZONES $redirect_dest || \
|
|
append FW_CONNTRACK_ZONES $redirect_dest
|
|
|
|
else
|
|
fw_log error "redirect ${redirect_name}: target must be either DNAT or SNAT, skipping"
|
|
return 0
|
|
fi
|
|
|
|
local mode
|
|
fw_get_family_mode mode ${redirect_family:-x} ${redirect_src:-$redirect_dest} I
|
|
|
|
local srcaddr
|
|
fw_get_negation srcaddr '-s' "${redirect_src_ip:+$redirect_src_ip/$redirect_src_ip_prefixlen}"
|
|
|
|
local srcports
|
|
fw_get_port_range srcports "$redirect_src_port" ":"
|
|
fw_get_negation srcports '--sport' "$srcports"
|
|
|
|
local destaddr
|
|
fw_get_negation destaddr '-d' "${redirect_dest_ip:+$redirect_dest_ip/$redirect_dest_ip_prefixlen}"
|
|
|
|
local destports
|
|
fw_get_port_range destports "${redirect_dest_port:-$redirect_src_dport}" ":"
|
|
fw_get_negation destports '--dport' "$destports"
|
|
|
|
[ "$redirect_proto" == "tcpudp" ] && redirect_proto="tcp udp"
|
|
local pr; for pr in $redirect_proto; do
|
|
fw_get_negation pr '-p' "$pr"
|
|
local sm; for sm in ${redirect_src_mac:-""}; do
|
|
fw_get_negation sm '--mac-source' "$sm"
|
|
fw add $mode n $natchain $redirect_target + \
|
|
{ $redirect_src_ip $redirect_dest_ip } { \
|
|
$srcaddr $srcdaddr $pr \
|
|
$srcports $srcdports \
|
|
${sm:+-m mac $sm} \
|
|
$natopt $nataddr${natports:+:$natports} \
|
|
$redirect_options \
|
|
}
|
|
|
|
fw add $mode f ${fwdchain:-forward} ACCEPT + \
|
|
{ $redirect_src_ip $redirect_dest_ip } { \
|
|
$srcaddr $destaddr \
|
|
$pr \
|
|
$srcports $destports \
|
|
${sm:+-m mac $sm} \
|
|
$fwdopt \
|
|
$redirect_extra \
|
|
}
|
|
done
|
|
done
|
|
|
|
fw_callback post redirect
|
|
}
|