freebsd-dev/etc/rc.d/local_unbound
Dag-Erling Smørgrav 49cede74ee Add a setup script for unbound(8) called local-unbound-setup. It
generates a configuration suitable for running unbound as a caching
forwarding resolver, and configures resolvconf(8) to update unbound's
list of forwarders in addition to /etc/resolv.conf.  The initial list
is taken from the existing resolv.conf, which is rewritten to point to
localhost.  Alternatively, a list of forwarders can be provided on the
command line.

To assist this script, add an rc.subr command called "enabled" which
does nothing except return 0 if the service is enabled and 1 if it is
not, without going through the usual checks.  We should consider doing
the same for "status", which is currently pointless.

Add an rc script for unbound, called local_unbound.  If there is no
configuration file, the rc script runs local-unbound-setup to generate
one.

Note that these scripts place the unbound configuration files in
/var/unbound rather than /etc/unbound.  This is necessary so that
unbound can reload its configuration while chrooted.  We should
probably provide symlinks in /etc.

Approved by:	re (blanket)
2013-09-23 04:36:51 +00:00

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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: local_unbound
# REQUIRE: SERVERS cleanvar
# KEYWORD: shutdown
. /etc/rc.subr
name="local_unbound"
desc="local caching forwarding resolver"
rcvar="local_unbound_enable"
command="/usr/sbin/unbound"
extra_commands="anchor configtest reload setup"
start_precmd="local_unbound_prestart"
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"
: ${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}
: ${local_unbound_anchor:=${local_unbound_workdir}/root.key}
: ${local_unbound_forwarders:=}
load_rc_config $name
do_as_unbound()
{
echo "$@" | su -m unbound
}
#
# Retrieve or update the DNSSEC root anchor
#
local_unbound_anchor()
{
do_as_unbound /usr/sbin/unbound-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 /usr/sbin/unbound-checkconf ${local_unbound_config}
}
#
# Create the unbound configuration file and update resolv.conf to
# point to unbound.
#
local_unbound_setup()
{
echo "Performing initial setup."
/usr/sbin/local-unbound-setup -n \
-u unbound \
-w ${local_unbound_workdir} \
-c ${local_unbound_config} \
-f ${local_unbound_forwardconf} \
-a ${local_unbound_anchor} \
${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 [ ! -f ${local_unbound_anchor} ] ; then
run_rc_command anchor
fi
}
load_rc_config $name
run_rc_command "$1"