root/ff-luci/trunk/applications/luci-splash/root/etc/init.d/luci_splash @ 3395

#!/bin/sh /etc/rc.common
START=70

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 zone_${zone}_prerouting -s "$NETWORK/$PREFIX" -p ! tcp -j luci_splash_portal
    iptables -t nat -A zone_${zone}_prerouting -s "$NETWORK/$PREFIX" -d ! "$ipaddr" -j luci_splash_portal
    iptables -t nat -A zone_${zone}_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 -A luci_splash_portal -m mac --mac-source "$mac" -j DROP
}

whitelist_add() {
    local cfg="$1"
    
    config_get mac "$cfg" mac
    [ -n "$mac" ] && iptables -t nat -A luci_splash_portal -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
    iptables -t nat -N luci_splash_portal
    iptables -t nat -N luci_splash_leases
    
    ### Build the main and portal rule
    config_foreach blacklist_add blacklist
    config_foreach whitelist_add whitelist
    config_foreach iface_add iface
    
    ### Build the portal rule
    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 -b -q -x /usr/bin/luci-splashd
}

stop() {    
    ### Clear subchains
    iptables -t nat -F luci_splash_leases
    iptables -t nat -F luci_splash_portal
    iptables -t nat -F luci_splash  
    
    ### Delete subchains
    iptables -t nat -X luci_splash_leases
    iptables -t nat -X luci_splash_portal
    iptables -t nat -X luci_splash

    ### Stop the splash httpd
    start-stop-daemon -K -q -x /usr/bin/luci-splashd
}