. /lib/functions.sh
. /lib/functions/network.sh
-if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
- local wanip
- network_get_ipaddr wanip wan || return
-
- iptables -t nat -F nat_reflection_in 2>/dev/null || {
- iptables -t nat -N nat_reflection_in
- iptables -t nat -A prerouting_rule -j nat_reflection_in
+if [ "$ACTION" = "remove" ]; then
+
+ delete_rules_by_comment() {
+ local table="$1"
+ local chain="$2"
+ local comment="$3"
+
+ iptables -t "$table" --line-numbers -nL "$chain" 2>/dev/null | \
+ sed -e '
+ 1d;
+ 1! {
+ \#^[0-9]\+ .* /\* '"$comment"' \*/.*$# {
+ s/ .*$//;
+ G; h;
+ }
+ };
+ $!d;
+ ' | xargs -n1 iptables -t "$table" -D "$chain" 2>/dev/null
}
- iptables -t nat -F nat_reflection_out 2>/dev/null || {
- iptables -t nat -N nat_reflection_out
- iptables -t nat -A postrouting_rule -j nat_reflection_out
- }
+ delete_rules_by_comment nat nat_reflection_in "$INTERFACE"
+ delete_rules_by_comment nat nat_reflection_out "$INTERFACE"
+ delete_rules_by_comment filter nat_reflection_fwd "$INTERFACE"
+
+elif [ "$ACTION" = "add" ]; then
+
+ prepare_chains() {
+ iptables -t nat -N nat_reflection_in 2>/dev/null && {
+ iptables -t nat -A prerouting_rule -j nat_reflection_in
+ }
+
+ iptables -t nat -N nat_reflection_out 2>/dev/null && {
+ iptables -t nat -A postrouting_rule -j nat_reflection_out
+ }
- iptables -t filter -F nat_reflection_fwd 2>/dev/null || {
- iptables -t filter -N nat_reflection_fwd
- iptables -t filter -A forwarding_rule -j nat_reflection_fwd
+ iptables -t filter -N nat_reflection_fwd 2>/dev/null && {
+ iptables -t filter -A forwarding_rule -j nat_reflection_fwd
+ }
}
find_networks() {
find_networks_cb() {
local cfg="$1"
local zone="$2"
+ local need_masq="${3:-0}"
local name
config_get name "$cfg" name
- [ "$name" = "$zone" ] && {
+ local masq
+ config_get_bool masq "$cfg" masq 0
+
+ [ "$name" = "$zone" ] && [ "$masq" -ge "$need_masq" ] && {
local network
config_get network "$cfg" network
local src
config_get src "$cfg" src
+ [ "$src" == "$ZONE" ] || return
+
+ local dest
+ config_get dest "$cfg" dest
+ [ "$dest" != "*" ] || return
local target
config_get target "$cfg" target DNAT
-
- [ "$src" = wan ] && [ "$target" = DNAT ] && {
- local dest
- config_get dest "$cfg" dest "lan"
- [ "$dest" != "*" ] || return
-
- local net
- for net in $(find_networks "$dest"); do
- local lannet
- network_get_subnet lannet "$net" || return
-
- local proto
- config_get proto "$cfg" proto
-
- local epmin epmax extport
- config_get extport "$cfg" src_dport "1-65535"
- [ -n "$extport" ] || return
-
- epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
- [ "${epmin#!}" != "$epmax" ] || epmax=""
-
- local ipmin ipmax intport
- config_get intport "$cfg" dest_port "$extport"
-
- ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
- [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
-
- local exthost
- config_get exthost "$cfg" src_dip "$wanip"
-
- local inthost
- config_get inthost "$cfg" dest_ip
- [ -n "$inthost" ] || return
-
- [ "$proto" = all ] && proto="tcp udp"
- [ "$proto" = tcpudp ] && proto="tcp udp"
-
- [ "${inthost#!}" = "$inthost" ] || return 0
- [ "${exthost#!}" = "$exthost" ] || return 0
-
- [ "${epmin#!}" != "$epmin" ] && \
- extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
- extport="--dport $epmin${epmax:+:$epmax}"
-
- [ "${ipmin#!}" != "$ipmin" ] && \
- intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
- intport="--dport $ipmin${ipmax:+:$ipmax}"
-
- local p
- for p in ${proto:-tcp udp}; do
- case "$p" in
- tcp|udp|6|17)
- iptables -t nat -A nat_reflection_in \
- -s $lannet -d $exthost \
- -p $p $extport \
- -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
-
- iptables -t nat -A nat_reflection_out \
- -s $lannet -d $inthost \
- -p $p $intport \
- -j SNAT --to-source ${lannet%%/*}
-
- iptables -t filter -A nat_reflection_fwd \
- -s $lannet -d $inthost \
- -p $p $intport \
- -j ACCEPT
- ;;
- esac
- done
+ [ "$target" = DNAT ] || return
+
+ prepare_chains
+
+ local net
+ for net in $(find_networks "$dest" 0); do
+ local intnet
+ network_get_subnet intnet "$net" || continue
+
+ local proto
+ config_get proto "$cfg" proto
+
+ local epmin epmax extport
+ config_get extport "$cfg" src_dport "1-65535"
+ [ -n "$extport" ] || return
+
+ epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
+ [ "${epmin#!}" != "$epmax" ] || epmax=""
+
+ local ipmin ipmax intport
+ config_get intport "$cfg" dest_port "$extport"
+
+ ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
+ [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
+
+ local exthost
+ config_get exthost "$cfg" src_dip "$extip"
+
+ local inthost
+ config_get inthost "$cfg" dest_ip
+ [ -n "$inthost" ] || return
+
+ [ "$proto" = all ] && proto="tcp udp"
+ [ "$proto" = tcpudp ] && proto="tcp udp"
+
+ [ "${inthost#!}" = "$inthost" ] || return 0
+ [ "${exthost#!}" = "$exthost" ] || return 0
+
+ [ "${epmin#!}" != "$epmin" ] && \
+ extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
+ extport="--dport $epmin${epmax:+:$epmax}"
+
+ [ "${ipmin#!}" != "$ipmin" ] && \
+ intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
+ intport="--dport $ipmin${ipmax:+:$ipmax}"
+
+ local p
+ for p in ${proto:-tcp udp}; do
+ case "$p" in
+ tcp|udp|6|17)
+ iptables -t nat -A nat_reflection_in \
+ -s $intnet -d $exthost \
+ -p $p $extport \
+ -m comment --comment "$INTERFACE" \
+ -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
+
+ iptables -t nat -A nat_reflection_out \
+ -s $intnet -d $inthost \
+ -p $p $intport \
+ -m comment --comment "$INTERFACE" \
+ -j SNAT --to-source ${intnet%%/*}
+
+ iptables -t filter -A nat_reflection_fwd \
+ -s $intnet -d $inthost \
+ -p $p $intport \
+ -m comment --comment "$INTERFACE" \
+ -j ACCEPT
+ ;;
+ esac
done
- }
+ done
}
config_load firewall
+
+ local is_masq_zone="$(find_networks "$ZONE" 1)"
+ [ -n "$is_masq_zone" ] || exit 0
+
+ local extip
+ network_get_ipaddr extip "$INTERFACE" || exit 0
+
config_foreach setup_fwd redirect
fi
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