#!/bin/sh
CONFIG=1
source /usr/sbin/helper.sh

DNSMASQ_CONF=/tmp/etc/dnsmasq.conf

cmd_log () {
    if [ ${1} -ne 0 ]; then
        logger "${2}[${1}] - ${3}"
    fi
}

cmd_run () {
    CMD=`${2} 2> /dev/null`
    ERRCODE=$?
    if [ $# -eq 3 ] && [ "${3}" = "-nolog" ]; then
        return ${ERRCODE}
    fi
    cmd_log ${ERRCODE} "${1}" "${ERR}: ${2}, ${CMD}"
    return ${ERRCODE}
}

iptable () {
    IFACE=`echo "${1}"`
    local OPT=`echo "${2}"`
    shift 2
    if [ "${OPT}" = "I" ]; then
        iptable "${IFACE}" "D" ${@}
    fi
    if [ $# -eq 1 ]; then
        if [ "${OPT}" = "D" ]; then
            cmd_run "iptable" "iptables -t nat -${OPT} POSTROUTING -s ${1} -o ${IFACE} -j MASQUERADE" "-nolog"
        else
            cmd_run "iptable" "iptables -t nat -${OPT} POSTROUTING -s ${1} -o ${IFACE} -j MASQUERADE"
        fi
    elif [ $# -eq 2 ]; then
        if [ "${OPT}" = "D" ]; then
            cmd_run "iptable" "iptables -${OPT} ${1} -i ${IFACE} -m state --state NEW -j ${2}" "-nolog"
        else
            cmd_run "iptable" "iptables -${OPT} ${1} -i ${IFACE} -m state --state NEW -j ${2}"
        fi
    elif [ $# -eq 3 ]; then
        if [ "${OPT}" = "D" ]; then
            cmd_run "iptable" "iptables -${OPT} ${1} -i ${IFACE} -o ${3} -j ${2}" "-nolog"
        else
            cmd_run "iptable" "iptables -${OPT} ${1} -i ${IFACE} -o ${3} -j ${2}"
        fi
    else
        cmd_log 0 "iptable" "Unknown argument length ${#} (${@})."
    fi
}

ebtable () {
    if [ "${2}" = "I" ]; then
        ebtable "${1}" "D" "${3}"
    fi
    if [ "${2}" = "D" ]; then
        cmd_run "ebtable" "ebtables -t broute -${2} BROUTING -p ${3} -i ${1} -j DROP" "-nolog"
    else
        cmd_run "ebtable" "ebtables -t broute -${2} BROUTING -p ${3} -i ${1} -j DROP"
    fi
}