Eye/scripts/update-dnsmasq

#!/bin/bash

logger -t dhcpd "Refresh dnsmasq config request"

force=$1

/usr/local/scripts/print-dnsmasq.pl >/tmp/mac-all
ret=$?

if [ ${ret} -ne 0 ]; then
    logger -t dhcpd "Config generate error! Bye."
    exit
    fi

touch /etc/dnsmasq.d/mac-all
diff -aqbBfi /tmp/mac-all /etc/dnsmasq.d/mac-all >/dev/null
ret=$?

if [ ${ret} -ne 0 -o -n "${force}" ]; then
    logger -t dhcpd "Update dnsmasq config"
    cat /etc/dnsmasq.d/mac-all >/tmp/mac.old
    cat  /tmp/mac-all >/etc/dnsmasq.d/mac-all
    /usr/sbin/dnsmasq --test >/dev/null 2>&1
    ret=$?
    if [ ${ret} -eq 0 ]; then
        systemctl stop dnsmasq>/dev/null
        >/var/lib/misc/dnsmasq.leases
        systemctl start dnsmasq>/dev/null
	else
        logger -t dhcpd "Config error! Rollback changes."
	cat /tmp/mac.old >/etc/dnsmasq.d/mac-all
	fi
    else
    logger -t dhcpd "Config not changed. Skip restart"
    fi

logger -t dhcpd "done"

exit