#!/bin/sh /etc/rc.common

USE_PROCD=1
START=95

BIN=/usr/bin/wifidog-ng

dhcp_host_white=1

start_wifidog() {
    local cfg="$1"
    local enabled interface

    uci_validate_section wifidog-ng gateway "${1}" \
        'enabled:bool:0' \
        'interface:uci("network", "@interface"):lan' \
        'dhcp_host_white:bool:1'

    [ $? -ne 0 ] && {
        echo "validation gateway failed" >&2
        exit 1
    }

    [ $enabled -eq 1 ] || exit 0

    # timeout = 49 days
    ipset -! create wifidog-ng-mac hash:mac timeout 4294967
    ipset -! create wifidog-ng-ip hash:ip

    modprobe wifidog-ng
    echo "enabled=1" > /proc/wifidog-ng/config
    
    procd_open_instance
    procd_set_param command $BIN
    procd_set_param respawn
    procd_close_instance
}

parse_server() {
    local cfg="$1"
    local host

    config_get host $cfg host
    validate_data ip4addr "$host" 2> /dev/null
    if [ $? -eq 0 ];
    then
        ipset add wifidog-ng-ip $host
    else
        echo "ipset=/$host/wifidog-ng-ip" >> /tmp/dnsmasq.d/wifidog-ng
    fi
}

parse_validated_user() {
    local cfg="$1"
    local mac ip

    uci_validate_section wifidog-ng validated_user "${1}" \
        'mac:macaddr'

    [ $? -ne 0 ] && {
        echo "validation validated_user failed" >&2
        exit 1
    }

    [ -n "$mac" ] && ipset add wifidog-ng-mac $mac
}

parse_validated_domain() {
    local cfg="$1"
    local domain

    uci_validate_section wifidog-ng validated_domain "${1}" \
        'domain:host'

    [ $? -ne 0 ] && {
        echo "validation validated_domain failed" >&2
        exit 1
    }

    [ -n "$domain" ] && echo "ipset=/$domain/wifidog-ng-ip" >> /tmp/dnsmasq.d/wifidog-ng
}

parse_dhcp_host() {
    local cfg="$1"
    local mac ip

    uci_validate_section dhcp host "${1}" \
        'mac:macaddr'

    [ $? -ne 0 ] && {
        echo "validation validated dhcp host failed" >&2
        exit 1
    }

    [ -n "$mac" ] && ipset add wifidog-ng-mac $mac
}

start_service() {
    config_load wifidog-ng
    config_foreach start_wifidog gateway

    echo -n > /tmp/dnsmasq.d/wifidog-ng

    config_foreach parse_server server
    config_foreach parse_validated_user validated_user    
    config_foreach parse_validated_domain validated_domain

    [ $dhcp_host_white -eq 1 ] && {
        config_load dhcp
        config_foreach parse_dhcp_host host
    }

    /etc/init.d/dnsmasq restart &
}

stop_service() {
    rmmod wifidog-ng

    ipset destroy wifidog-ng-mac
    ipset destroy wifidog-ng-ip
}