freebsd-dev/libexec/rc/rc.d/local_unbound
Dag-Erling Smørgrav caa0408fa8 Run unbound-anchor when root.key is empty, not just when it is absent.
PR:		232555
Submitted by:	Ari Suutari <ari@stonepile.fi>
MFC after:	3 days
2018-11-01 14:24:12 +00:00

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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: local_unbound
# REQUIRE: FILESYSTEMS defaultroute netwait resolv
# BEFORE: NETWORKING
# KEYWORD: shutdown
. /etc/rc.subr
name="local_unbound"
desc="Local caching forwarding resolver"
rcvar="local_unbound_enable"
command="/usr/sbin/local-unbound"
extra_commands="anchor configtest reload setup"
start_precmd="local_unbound_prestart"
start_postcmd="local_unbound_poststart"
reload_precmd="local_unbound_configtest"
anchor_cmd="local_unbound_anchor"
configtest_cmd="local_unbound_configtest"
setup_cmd="local_unbound_setup"
pidfile="/var/run/${name}.pid"
load_rc_config $name
: ${local_unbound_workdir:=/var/unbound}
: ${local_unbound_config:=${local_unbound_workdir}/unbound.conf}
: ${local_unbound_flags:="-c ${local_unbound_config}"}
: ${local_unbound_forwardconf:=${local_unbound_workdir}/forward.conf}
: ${local_unbound_controlconf:=${local_unbound_workdir}/control.conf}
: ${local_unbound_anchor:=${local_unbound_workdir}/root.key}
: ${local_unbound_forwarders:=}
: ${local_unbound_tls:=}
do_as_unbound()
{
echo "$@" | su -m unbound
}
#
# Retrieve or update the DNSSEC root anchor
#
local_unbound_anchor()
{
do_as_unbound ${command}-anchor -a ${local_unbound_anchor}
# we can't trust the exit code - check if the file exists
[ -f ${local_unbound_anchor} ]
}
#
# Check the unbound configuration file
#
local_unbound_configtest()
{
do_as_unbound ${command}-checkconf ${local_unbound_config}
}
#
# Create the unbound configuration file and update resolv.conf to
# point to unbound.
#
local_unbound_setup()
{
local tls_flag
if checkyesno local_unbound_tls ; then
tls_flag="-t"
fi
echo "Performing initial setup."
${command}-setup -n \
-u unbound \
-w ${local_unbound_workdir} \
-c ${local_unbound_config} \
-f ${local_unbound_forwardconf} \
-o ${local_unbound_controlconf} \
-a ${local_unbound_anchor} \
${tls_flag} \
${local_unbound_forwarders}
}
#
# Before starting, check that the configuration file and root anchor
# exist. If not, attempt to generate them.
#
local_unbound_prestart()
{
# Create configuration file
if [ ! -f ${local_unbound_config} ] ; then
run_rc_command setup
fi
# Retrieve DNSSEC root key
if [ ! -s ${local_unbound_anchor} ] ; then
run_rc_command anchor
fi
}
#
# After starting, wait for Unbound to report that it is ready to avoid
# race conditions with services which require functioning DNS.
#
local_unbound_poststart()
{
local retry=5
echo -n "Waiting for nameserver to start..."
until "${command}-control" status | grep -q "is running" ; do
if [ $((retry -= 1)) -eq 0 ] ; then
echo " giving up"
return 1
fi
echo -n "."
sleep 1
done
echo " good"
}
load_rc_config $name
run_rc_command "$1"