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#!/bin/sh /etc/rc.common
START=70
EXTRA_COMMANDS=clear_leases
iface_add() {
local cfg="$1"
config_get zone "$cfg" zone
[ -n "$zone" ] || return 0
config_get net "$cfg" network
[ -n "$net" ] || return 0
config_get ipaddr "$net" ipaddr
[ -n "$ipaddr" ] || return 0
config_get netmask "$net" netmask
[ -n "$netmask" ] || return 0
eval "$(ipcalc.sh $ipaddr $netmask)"
iptables -t nat -A prerouting_${zone} -j luci_splash_prerouting
iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -p ! tcp -j luci_splash_portal
iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d ! "$ipaddr" -j luci_splash_portal
iptables -t nat -A luci_splash_prerouting -s "$NETWORK/$PREFIX" -d "$ipaddr" -p tcp -m multiport ! --dport 22,80,443 -j luci_splash_portal
}
blacklist_add() {
local cfg="$1"
config_get mac "$cfg" mac
[ -n "$mac" ] && iptables -t nat -I luci_splash_leases -m mac --mac-source "$mac" -j DROP
}
whitelist_add() {
local cfg="$1"
config_get mac "$cfg" mac
[ -n "$mac" ] && iptables -t nat -I luci_splash_leases -m mac --mac-source "$mac" -j RETURN
}
start() {
### Read chains from config
include /lib/network
scan_interfaces
config_load luci_splash
### Create subchains
iptables -t nat -N luci_splash_portal
iptables -t nat -N luci_splash_leases
iptables -t nat -N luci_splash_prerouting
### Build the main and portal rule
config_foreach blacklist_add blacklist
config_foreach whitelist_add whitelist
config_foreach whitelist_add lease
config_foreach iface_add iface
### Build the portal rule
iptables -t nat -A luci_splash_portal -p udp --dport 33434:33523 -j RETURN
iptables -t nat -A luci_splash_portal -p icmp -j RETURN
iptables -t nat -A luci_splash_portal -p udp --dport 53 -j RETURN
iptables -t nat -A luci_splash_portal -j luci_splash_leases
### Build the leases rule
iptables -t nat -A luci_splash_leases -p tcp --dport 80 -j REDIRECT --to-ports 8082
iptables -t nat -A luci_splash_leases -j DROP
### Add crontab entry
grep luci-splash /var/spool/cron/crontabs/root >/dev/null 2>&1 || {
echo '*/5 * * * * /usr/sbin/luci-splash sync' >> /var/spool/cron/crontabs/root
}
### Start the splash httpd
start-stop-daemon -S -m -p /var/run/luci-splashd.pid -b -q -x /usr/bin/luci-splashd
}
iface_del() {
config_get zone "$1" zone
[ -n "$zone" ] || return 0
while iptables -t nat -D prerouting_${zone} -j luci_splash_prerouting 2>&-; do :; done
}
stop() {
### Clear interface rules
config_load luci_splash
config_foreach iface_del iface
### Clear subchains
iptables -t nat -F luci_splash_leases
iptables -t nat -F luci_splash_portal
iptables -t nat -F luci_splash_prerouting
### Delete subchains
iptables -t nat -X luci_splash_leases
iptables -t nat -X luci_splash_portal
iptables -t nat -X luci_splash_prerouting
### Stop the splash httpd
start-stop-daemon -K -p /var/run/luci-splashd.pid -s KILL -q
sed -ie '/\/usr\/sbin\/luci-splash sync/d' /var/spool/cron/crontabs/root
}
clear_leases() {
stop
while uci -P /var/state del luci_splash.@lease[0] 2>&-;do :; done
start
}
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