#!/bin/bash

# run dhclient.d scripts in an emulated environment

PATH=/bin:/usr/bin:/sbin

ETCDIR=/etc/dhcp

SAVEDIR=/var/lib/dhclient

interface=$1

for optname in "${!DHCP4_@}"; do

    newoptname=${optname,,};

    newoptname=new_${newoptname#dhcp4_};

    export "${newoptname}"="${!optname}";

done

[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network

[ -f /etc/sysconfig/network-scripts/ifcfg-"${interface}" ] && \

    . /etc/sysconfig/network-scripts/ifcfg-"${interface}"

if [ -d $ETCDIR/dhclient.d ]; then

    for f in $ETCDIR/dhclient.d/*.sh; do

        if [ -x "${f}" ]; then

            subsystem="${f%.sh}"

            subsystem="${subsystem##*/}"

            . "${f}"

            if [ "$2" = "up" ]; then

                "${subsystem}_config"

            elif [ "$2" = "dhcp4-change" ]; then

                if [ "$subsystem" = "chrony" -o "$subsystem" = "ntp" ]; then

                    "${subsystem}_config"

                fi

            elif [ "$2" = "down" ]; then

                "${subsystem}_restore"

            fi

        fi

    done

fi