1 # Copyright (C) 2009-2013 OpenWrt.org
7 local val="$(uci_get_state firewall core $var)"
8 local e1; for e1 in $item; do
9 local e2; for e2 in $val; do
10 [ "$e1" = "$e2" ] && e1=""
12 val="${val:+$val${e1:+ }}$e1"
15 uci_toggle_state firewall core $var "$val"
23 local val="$(uci_get_state firewall core $var)"
24 local e1; for e1 in $val; do
25 local e2; for e2 in $item; do
26 [ "$e1" = "$e2" ] && e1=""
28 rest="${rest:+$rest${e1:+ }}$e1"
31 uci_toggle_state firewall core $var "$rest"
34 fw_do_interface_rules() {
37 local chain=zone_${zone}
43 local idev odev inet onet mode
44 fw_get_family_mode mode x $zone i
46 fw_get_negation idev '-i' "$ifname"
47 fw_get_negation odev '-o' "$ifname"
49 case "$mode/$subnet" in
50 # Zone supports v6 only or dual, need v6
52 fw_get_negation inet '-s' "$subnet"
53 fw_get_negation onet '-d' "$subnet"
57 # Zone supports v4 only or dual, need v4
59 fw_get_negation inet '-s' "$subnet"
60 fw_get_negation onet '-d' "$subnet"
64 # Need v6 while zone is v4
65 */*:*) fw_log info "zone $zone does not support IPv6 address family, skipping"; return ;;
67 # Need v4 while zone is v6
68 */*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
71 *) mode="${mode#G}" ;;
74 lock /var/run/firewall-interface.lock
76 fw $action $mode f ${chain}_dest_ACCEPT ACCEPT $ { $odev $onet $extra_dest }
77 fw $action $mode f ${chain}_src_ACCEPT ACCEPT $ { $idev $inet $extra_src }
78 fw $action $mode f ${chain}_dest_DROP DROP $ { $odev $onet $extra_dest }
79 fw $action $mode f ${chain}_src_DROP DROP $ { $idev $inet $extra_src }
80 fw $action $mode f ${chain}_dest_REJECT reject $ { $odev $onet $extra_dest }
81 fw $action $mode f ${chain}_src_REJECT reject $ { $idev $inet $extra_src }
83 [ "$(uci_get_state firewall core "${zone}_tcpmss")" == 1 ] && \
84 fw $action $mode m ${chain}_MSSFIX TCPMSS $ \
85 { $odev -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet $extra_dest }
87 fw $action $mode f delegate_input ${chain}_input $ { $idev $inet $extra_src }
88 fw $action $mode f delegate_forward ${chain}_forward $ { $idev $inet $extra_src }
89 fw $action $mode f delegate_output ${chain}_output $ { $odev $onet $extra_dest }
91 fw $action $mode n PREROUTING ${chain}_prerouting $ { $idev $inet $extra_src }
92 fw $action $mode r PREROUTING ${chain}_notrack $ { $idev $inet $extra_src }
93 fw $action $mode n POSTROUTING ${chain}_nat $ { $odev $onet $extra_dest }
95 # Flush conntrack table
96 echo f >/proc/net/nf_conntrack 2>/dev/null
98 lock -u /var/run/firewall-interface.lock
101 fw_configure_interface() {
107 [ "$action" == "add" ] && {
108 local status=$(uci_get_state network "$iface" up 0)
109 [ "$status" == 1 ] || [ -n "$aliasnet" ] || return 0
112 [ -n "$ifname" ] || {
113 ifname=$(uci_get_state network "$iface" ifname)
114 ifname="${ifname%%:*}"
115 [ -z "$ifname" ] && return 0
118 [ "$ifname" == "lo" ] && return 0
120 fw_callback pre interface
122 local old_zones old_ifname old_subnets
123 config_get old_zones core "${iface}_zone"
124 [ -n "$old_zones" ] && {
125 config_get old_ifname core "${iface}_ifname"
126 config_get old_subnets core "${iface}_subnets"
129 for z in $old_zones; do
131 for n in ${old_subnets:-""}; do
132 fw_log info "removing $iface ($old_ifname${n:+ alias $n}) from zone $z"
133 fw_do_interface_rules del $z $old_ifname $n
136 [ -n "$old_subnets" ] || {
137 fw__uci_state_del "${z}_networks" "$iface"
138 env -i ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
143 config_get old_aliases core "${iface}_aliases"
146 for a in $old_aliases; do
147 fw_configure_interface "$a" del "$old_ifname"
150 uci_revert_state firewall core "${iface}_zone"
151 uci_revert_state firewall core "${iface}_ifname"
152 uci_revert_state firewall core "${iface}_subnets"
153 uci_revert_state firewall core "${iface}_aliases"
156 [ "$action" == del ] && return
158 [ -z "$aliasnet" ] && {
160 config_get aliases "$iface" aliases
163 for a in $aliases; do
164 local ipaddr netmask ip6addr
165 config_get ipaddr "$a" ipaddr
166 config_get netmask "$a" netmask
167 config_get ip6addr "$a" ip6addr
169 [ -n "$ipaddr" ] && fw_configure_interface "$a" add "" "$ipaddr${netmask:+/$netmask}"
170 [ -n "$ip6addr" ] && fw_configure_interface "$a" add "" "$ip6addr"
173 fw_sysctl_interface $ifname
174 fw_callback post interface
176 uci_toggle_state firewall core "${iface}_aliases" "$aliases"
179 config_get subnets core "${iface}_subnets"
180 append subnets "$aliasnet"
182 config_set core "${iface}_subnets" "$subnets"
183 uci_toggle_state firewall core "${iface}_subnets" "$subnets"
188 fw_config_get_zone "$1"
189 list_contains zone_network "$iface" || return
191 fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
192 fw_do_interface_rules add ${zone_name} "$ifname" "$aliasnet"
193 append new_zones $zone_name
195 [ -n "$aliasnet" ] || {
196 fw__uci_state_add "${zone_name}_networks" "${zone_network}"
197 env -i ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
200 config_foreach load_zone zone
202 uci_toggle_state firewall core "${iface}_zone" "$new_zones"
203 uci_toggle_state firewall core "${iface}_ifname" "$ifname"
206 fw_sysctl_interface() {
209 sysctl -w net.ipv4.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
210 sysctl -w net.ipv6.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
211 sysctl -w net.ipv4.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
212 sysctl -w net.ipv6.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
213 } >/dev/null 2>/dev/null