string src_dport "" \
string dest "" \
ipaddr dest_ip "" \
- string dest_mac "" \
string dest_port "" \
string proto "tcpudp" \
string family "" \
string target "DNAT" \
+ string extra "" \
} || return
[ -n "$redirect_name" ] || redirect_name=$redirect__name
}
fw_callback pre redirect
- [ -n "$redirect_src" -a -n "$redirect_dest_ip$redirect_dest_port" ] || {
- fw_die "redirect ${redirect_name}: needs src and dest_ip or dest_port"
- }
-
- local chain destopt
+ local fwdchain natchain natopt nataddr natports srcdaddr srcdports
if [ "$redirect_target" == "DNAT" ]; then
- chain="zone_${redirect_src}_prerouting"
- destopt="--to-destination"
+ [ -n "${redirect_src#*}" -a -n "$redirect_dest_ip$redirect_dest_port" ] || {
+ fw_log error "DNAT redirect ${redirect_name}: needs src and dest_ip or dest_port, skipping"
+ return 0
+ }
+
+ fwdchain="zone_${redirect_src}${redirect_dest_ip:+_forward}"
+
+ natopt="--to-destination"
+ natchain="zone_${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
- chain="zone_${redirect_src}_nat"
- destopt="--to-source"
+ [ -n "${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_die "redirect ${redirect_name}: target must be either DNAT or SNAT"
+ fw_log error "redirect ${redirect_name}: target must be either DNAT or SNAT, skipping"
+ return 0
fi
- list_contains FW_CONNTRACK_ZONES $redirect_src || \
- append FW_CONNTRACK_ZONES $redirect_src
+ local mode
+ fw_get_family_mode mode ${redirect_family:-x} ${redirect_src:-$redirect_dest} I
- local mode=$(fw_get_family_mode ${redirect_family:-x} $redirect_src I)
+ local srcaddr
+ fw_get_negation srcaddr '-s' "${redirect_src_ip:+$redirect_src_ip/$redirect_src_ip_prefixlen}"
- local nat_dest_port=$redirect_dest_port
- redirect_dest_port=$(fw_get_port_range $redirect_dest_port)
- redirect_src_port=$(fw_get_port_range $redirect_src_port)
- redirect_src_dport=$(fw_get_port_range $redirect_src_dport)
- local fwd_dest_port=${redirect_dest_port:-$redirect_src_dport}
+ local srcports
+ fw_get_port_range srcports "$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"
- for redirect_proto in $redirect_proto; do
- fw add $mode n $chain $redirect_target $ { $redirect_src_ip $redirect_dest_ip } { \
- ${redirect_proto:+-p $redirect_proto} \
- ${redirect_src_ip:+-s $redirect_src_ip/$redirect_src_ip_prefixlen} \
- ${redirect_src_dip:+-d $redirect_src_dip/$redirect_src_dip_prefixlen} \
- ${redirect_src_port:+--sport $redirect_src_port} \
- ${redirect_src_dport:+--dport $redirect_src_dport} \
- ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
- $destopt ${redirect_dest_ip}${redirect_dest_port:+:$nat_dest_port} \
- }
+ 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} \
+ $redirect_options \
+ }
- [ -n "$redirect_dest_ip" ] && \
- fw add $mode f zone_${redirect_src}_forward ACCEPT ^ { $redirect_src_ip $redirect_dest_ip } { \
- -d $redirect_dest_ip \
- ${redirect_proto:+-p $redirect_proto} \
- ${redirect_src_ip:+-s $redirect_src_ip/$redirect_src_ip_prefixlen} \
- ${redirect_src_port:+--sport $redirect_src_port} \
- ${fwd_dest_port:+--dport $fwd_dest_port} \
- ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
- }
+ fw add $mode f ${fwdchain:-forward} ACCEPT + \
+ { $redirect_src_ip $redirect_dest_ip } { \
+ $srcaddr ${destaddr:--m conntrack --ctstate DNAT} \
+ $pr \
+ $srcports $destports \
+ ${sm:+-m mac $sm} \
+ $redirect_extra \
+ }
+ done
done
fw_callback post redirect