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#!/bin/sh
#
# unbound       This shell script takes care of starting and stopping
#               unbound (DNS server).
#
# chkconfig:   - 14 86
# description:  unbound is a Domain Name Server (DNS) \
#               that is used to resolve host names to IP addresses.

### BEGIN INIT INFO
# Provides: unbound
# Required-Start: $network $local_fs
# Required-Stop: $network $local_fs
# Default-Start:
# Default-Stop: 0 1 2 3 4 5 6
# Should-Start: $syslog
# Should-Stop: $syslog
# Short-Description: unbound recursive Domain Name Server.
# Description:  unbound is a Domain Name Server (DNS) 
#               that is used to resolve host names to IP addresses.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

exec="/usr/sbin/unbound"
config="/etc/unbound/unbound.conf"
pidfile="/var/run/unbound/unbound.pid"
piddir=`dirname $pidfile`

[ -x /usr/sbin/dnssec-configure ] && [ -r "$config" ] &&
  [ /etc/sysconfig/dnssec -nt "$config" ] && \
    /usr/sbin/dnssec-configure -u --norestart --dnssec="$DNSSEC" --dlv="$DLV"

start() {
    [ -x $exec ] || exit 5
    [ -f $config ] || exit 6
    # /var/run could (and should) be tmpfs
    [ -d $piddir ] || mkdir $piddir

    if [ -f /var/lib/unbound/root.anchor -a -f /usr/sbin/unbound-anchor ]
    then
        /sbin/runuser --command="/usr/sbin/unbound-anchor -a /var/lib/unbound/root.anchor -c /etc/unbound/icannbundle.pem" --shell /bin/sh unbound
    fi

    if [ ! -f /etc/unbound/unbound_control.key ]
    then
        echo -n $"Generating unbound control key and certificate: "
        /usr/sbin/unbound-control-setup -d /etc/unbound/ > /dev/null 2> /dev/null
        chgrp unbound /etc/unbound/unbound_*key /etc/unbound/unbound_*pem
        [ -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled && \
            [ -x /sbin/restorecon ] && /sbin/restorecon /etc/unbound/*
        echo
    else
        # old init script created these as root instead of unbound.
        if [ -G /etc/unbound/unbound_control.key ]
        then
            chgrp unbound /etc/unbound/unbound_*key /etc/unbound/unbound_*pem
            [ -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled && \
                [ -x /sbin/restorecon ] && /sbin/restorecon /etc/unbound/*
            echo
        fi
    fi


    unbound-checkconf $config > /dev/null
    RETVAL=$?
    if [ $RETVAL != 0 ]
    then
        echo "Error in /etc/unbound/unbound.conf, aborted"
        exit 6
    fi

    echo -n $"Starting unbound: "

    # if not running, start it up here
    daemon --pidfile=$pidfile $exec -c $config
    echo
}

stop() {
    echo -n $"Stopping unbound: "
    # stop it here, often "killproc unbound"
    killproc -p $pidfile unbound
    echo
}

restart() {
    unbound-checkconf $config > /dev/null
    RETVAL=$?
    if [ $RETVAL != 0 ]
    then
        echo "Error in /etc/unbound/unbound.conf, aborted"
        exit 6
    fi
    stop
    start
}

reload() {
    restart
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|restart}"
        exit 2
esac
exit $?