84 lines
2.6 KiB
Bash
84 lines
2.6 KiB
Bash
# Copyright (C) 2009-2010 OpenWrt.org
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fw_configure_interface() {
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local iface=$1
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local action=$2
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local ifname=$3
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[ "$action" == "add" ] && {
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local status=$(uci_get_state network "$iface" up 0)
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[ "$status" == 1 ] || return 0
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}
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[ -n "$ifname" ] || ifname=$(uci_get_state network "$iface" ifname "$iface")
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[ "$ifname" == "lo" ] && return 0
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fw_callback pre interface
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fw__do_rules() {
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local action=$1
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local chain=$2
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local ifname=$3
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fw $action i f ${chain}_ACCEPT ACCEPT ^ { -o "$ifname" }
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fw $action i f ${chain}_ACCEPT ACCEPT ^ { -i "$ifname" }
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fw $action i f ${chain}_DROP DROP ^ { -o "$ifname" }
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fw $action i f ${chain}_DROP DROP ^ { -i "$ifname" }
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fw $action i f ${chain}_REJECT reject ^ { -o "$ifname" }
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fw $action i f ${chain}_REJECT reject ^ { -i "$ifname" }
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fw $action i n ${chain}_nat MASQUERADE ^ { -o "$ifname" }
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fw $action i f ${chain}_MSSFIX TCPMSS ^ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
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fw $action i f input ${chain} $ { -i "$ifname" }
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fw $action i f forward ${chain}_forward $ { -i "$ifname" }
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fw $action i n PREROUTING ${chain}_prerouting ^ { -i "$ifname" }
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fw $action i r PREROUTING ${chain}_notrack ^ { -i "$ifname" }
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}
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local old_zones old_ifname
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config_get old_zones core "${iface}_zone"
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[ -n "$old_zones" ] && {
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config_get old_ifname core "${iface}_ifname"
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for z in $old_zones; do
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fw_log info "removing $iface ($old_ifname) from zone $z"
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fw__do_rules del zone_$z $old_ifname
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ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
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done
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uci_revert_state firewall core "${iface}_zone"
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uci_revert_state firewall core "${iface}_ifname"
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}
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[ "$action" == del ] && return
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local new_zones
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load_zone() {
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fw_config_get_zone "$1"
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list_contains zone_network "$iface" || return
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fw_log info "adding $iface ($ifname) to zone $zone_name"
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fw__do_rules add zone_${zone_name} "$ifname"
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append new_zones $zone_name
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ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
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}
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config_foreach load_zone zone
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uci_set_state firewall core "${iface}_zone" "$new_zones"
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uci_set_state firewall core "${iface}_ifname" "$ifname"
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fw_sysctl_interface $ifname
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fw_callback post interface
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}
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fw_sysctl_interface() {
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local ifname=$1
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{
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sysctl -w net.ipv4.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
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sysctl -w net.ipv6.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
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sysctl -w net.ipv4.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
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sysctl -w net.ipv6.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
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} >/dev/null 2>/dev/null
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}
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