From c6537133132fa5acf0bdd024e6793ff095d8284f Mon Sep 17 00:00:00 2001 From: jow Date: Sat, 11 Sep 2010 20:04:34 +0000 Subject: [package] firewall: - simplify masquerade rule setup - remove various subshell invocations - speedup fw() by not relying on xargs and pipes - rework SNAT support - attach to dest zone, use src_dip/src_dport as snat source git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23024 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/firewall/files/lib/core_interface.sh | 33 +++++----------------------- 1 file changed, 6 insertions(+), 27 deletions(-) (limited to 'package/firewall/files/lib/core_interface.sh') diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh index c2a5bd7f33..889dcc9047 100644 --- a/package/firewall/files/lib/core_interface.sh +++ b/package/firewall/files/lib/core_interface.sh @@ -27,11 +27,9 @@ fw_configure_interface() { local chain=zone_${zone} local ifname=$3 local subnet=$4 - local masq_src=$5 - local masq_dest=$6 - local inet onet - local mode=$(fw_get_family_mode x $zone i) + local inet onet mode + fw_get_family_mode mode x $zone i case "$mode/$subnet" in # Zone supports v6 only or dual, need v6 @@ -62,38 +60,27 @@ fw_configure_interface() { fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet } fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet } - # NB: if MASQUERADING for IPv6 becomes available we'll need a family check here - local msrc mdst - for msrc in ${masq_src:-0.0.0.0/0}; do - [ "${msrc#!}" != "$msrc" ] && msrc="! -s ${msrc#!}" || msrc="-s $msrc" - for mdst in ${subnet:-${masq_dest:-0.0.0.0/0}}; do - [ "${mdst#!}" != "$mdst" ] && mdst="! -d ${mdst#!}" || mdst="-d $mdst" - fw $action $mode n ${chain}_nat MASQUERADE $ { -o "$ifname" $msrc $mdst } - done - done - fw $action $mode f ${chain}_MSSFIX TCPMSS $ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet } fw $action $mode f input ${chain} $ { -i "$ifname" $inet } fw $action $mode f forward ${chain}_forward $ { -i "$ifname" $inet } fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet } fw $action $mode r PREROUTING ${chain}_notrack $ { -i "$ifname" $inet } + fw $action $mode n POSTROUTING ${chain}_nat $ { -o "$ifname" $onet } } - local old_zones old_ifname old_subnets old_masq_src old_masq_dest + local old_zones old_ifname old_subnets config_get old_zones core "${iface}_zone" [ -n "$old_zones" ] && { config_get old_ifname core "${iface}_ifname" config_get old_subnets core "${iface}_subnets" - config_get old_masq_src core "${iface}_masq_src" - config_get old_masq_dest core "${iface}_masq_dest" local z for z in $old_zones; do local n for n in ${old_subnets:-""}; do fw_log info "removing $iface ($old_ifname${n:+ alias $n}) from zone $z" - fw__do_rules del $z $old_ifname $n "$old_masq_src" "$old_masq_dest" + fw__do_rules del $z $old_ifname $n done [ -n "$old_subnets" ] || ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall @@ -111,8 +98,6 @@ fw_configure_interface() { uci_revert_state firewall core "${iface}_ifname" uci_revert_state firewall core "${iface}_subnets" uci_revert_state firewall core "${iface}_aliases" - uci_revert_state firewall core "${iface}_masq_src" - uci_revert_state firewall core "${iface}_masq_dest" } [ "$action" == del ] && return @@ -146,17 +131,13 @@ fw_configure_interface() { } local new_zones= - local new_masq_src= - local new_masq_dest= load_zone() { fw_config_get_zone "$1" list_contains zone_network "$iface" || return fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name" - fw__do_rules add ${zone_name} "$ifname" "$aliasnet" "$zone_masq_src" "$zone_masq_dest" + fw__do_rules add ${zone_name} "$ifname" "$aliasnet" append new_zones $zone_name - append new_masq_src "$zone_masq_src" - append new_masq_dest "$zone_masq_dest" [ -n "$aliasnet" ] || ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall } @@ -164,8 +145,6 @@ fw_configure_interface() { uci_set_state firewall core "${iface}_zone" "$new_zones" uci_set_state firewall core "${iface}_ifname" "$ifname" - uci_set_state firewall core "${iface}_masq_src" "$new_masq_src" - uci_set_state firewall core "${iface}_masq_dest" "$new_masq_dest" } fw_sysctl_interface() { -- cgit v1.2.3