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#!/bin/bash
#
# Slackware initialization script for Unbound.


UNBOUND=/usr/sbin/unbound
CONFIG=/etc/unbound/unbound.conf
PIDFILE=/var/run/unbound/unbound.pid

# Unbound-control is useful but I'm not going to cram it
# down your throat. Set this to "yes" to disable unbound-control
# initial setup.
DISABLE_UNBOUND_CONTROL="no"

initchecks() {
    if [ ! -e $(dirname $PIDFILE) ]; then
        mkdir -p $(dirname $PIDFILE)
        chown unbound:unbound $(dirname $PIDFILE)
    fi
    if [ ! -e $(dirname $CONFIG)/unbound_server.pem ] && [ "$DISABLE_UNBOUND_CONTROL" == "no" ]; then
        echo "Unbound-control: unbound_server.pem not found."
        echo "Running initial setup: /usr/sbin/unbound-control-setup"
        /usr/sbin/unbound-control-setup || exit 1
    fi
}

start() {
    initchecks
    if [ -r $PIDFILE ]; then
        echo 'Unbound is already running!'
        return
    else
	echo "Starting Unbound DNS validating resolver..."
        $UNBOUND -c $CONFIG || echo "Failed to start! The error messages above might help."
    fi
}

stop() {
    if [ ! -r $PIDFILE ]; then
        echo 'Unbound is not running.'
        return
    fi
    echo "Stopping Unbound DNS validating resolver..."
    kill `cat $PIDFILE`
    rm -f $PIDFILE
}

reload() {
    if [ ! -r $PIDFILE ]; then
        echo 'Unbound is not running.'
        return
    fi
    echo "Sending SIGHUP to Unbound..."
    kill -HUP `cat $PIDFILE`
}

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