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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
LOGDIR=/var/log/unbound
# 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. Note that you'll need to disable control port
# in unbound.conf so Unbound will actually start.
DISABLE_UNBOUND_CONTROL="no"
# As part of the initial checks, the script makes sure that
# $LOGDIR exists. It's mostly for cases where admin accidentally
# deletes the entire log folder rather than individual logs.
# If you don't use logging at all, have a custom setup or
# just want to skip these checks, set this to "yes".
DISABLE_LOGDIR_CHECKS="no"
initchecks() {
# Look out for a stale pidfile. If there's one, remove it.
# This shouldn't be necessary unless the system was shutdown uncleanly
# or if Unbound crashes.
if [ -e $PIDFILE ] && [ ! $(pidof unbound) ]; then
echo "Looks like Unbound isn't running but there's a stale pid file."
echo "Removing $PIDFILE"
rm -vf $PIDFILE
fi
# Check that /var/run/unbound exists. If not, create and chown it.
if [ ! -e $(dirname $PIDFILE) ]; then
mkdir -p $(dirname $PIDFILE)
chown unbound:unbound $(dirname $PIDFILE)
fi
# Run the initial setup for unbound-control unless it's disabled.
# Mostly relevant for the first time run.
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
# Deleted the entire log directory by accident? Oh well, bound to happen.
# Let's fix that right away.
if [ "$DISABLE_LOGDIR_CHECKS" == "no" ]
then
if [ ! -d "$LOGDIR" ]; then
echo -n "Unbound log directory not found. Attempting to recreate it... "
mkdir $LOGDIR && echo "Success!"
fi
if [ $(stat -c "%U:%G" "$LOGDIR") != "unbound:unbound" ]; then
echo -n "Fixing permissions on the log folder $LOGDIR... "
chown -R unbound:unbound $LOGDIR && echo "Success!"
fi
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
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