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#!/usr/bin/openrc-run
# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
UNBOUND_BINARY=${UNBOUND_BINARY:-"/usr/bin/unbound"}
UNBOUND_CACHEFILE=${UNBOUND_CACHEFILE:-"/var/lib/unbound/${SVCNAME}.cache"}
UNBOUND_CHECKCONF=${UNBOUND_CHECKCONF:-"/usr/bin/unbound-checkconf"}
UNBOUND_CONFFILE=${UNBOUND_CONFFILE:-"/etc/unbound/${SVCNAME}.conf"}
UNBOUND_CONTROL=${UNBOUND_CONTROL:-"/usr/bin/unbound-control"}
UNBOUND_PIDFILE=${UNBOUND_PIDFILE:-"/run/unbound.pid"}
UNBOUND_SSDARGS=${UNBOUND_SSDARGS:-"--wait 1000"}
UNBOUND_TERMTIMEOUT=${UNBOUND_TERMTIMEOUT:-"TERM/25/KILL/5"}
UNBOUND_OPTS=${UNBOUND_OPTS:-""}
UNBOUND_LOAD_CACHE_TIMEOUT=${UNBOUND_LOAD_CACHE_TIMEOUT:-"30"}
getconfig() {
local key="$1"
local value_default="$2"
local value=
if service_started ; then
value="$(service_get_value "${key}")"
fi
if [ -z "${value}" ] && [ -n "${UNBOUND_CONFFILE}" ] && [ -r "${UNBOUND_CONFFILE}" ] ; then
value=$("${UNBOUND_CHECKCONF}" -o ${key} "${UNBOUND_CONFFILE}")
fi
if [ -z "${value}" ] ; then
# Value not explicitly set in the configfile or configfile does not exist
# or is not readable
echo "${value_default}"
else
echo "${value}"
fi
return 0
}
command=${UNBOUND_BINARY}
command_args="${UNBOUND_OPTS} -c \"${UNBOUND_CONFFILE}\""
start_stop_daemon_args="${UNBOUND_SSDARGS}"
pidfile="$(getconfig pidfile /run/unbound.pid)"
retry="${UNBOUND_TERMTIMEOUT}"
required_files="${UNBOUND_CONFFILE}"
name="unbound daemon"
extra_commands="configtest"
extra_started_commands="reload save_cache"
description="unbound is a Domain Name Server (DNS) that is used to resolve host names to IP address."
description_configtest="Run syntax tests for configuration files only."
description_reload="Kills all children and reloads the configuration."
description_save_cache="Saves the current cache to disk."
depend() {
use net logger
provide dns
after auth-dns
}
configtest() {
local _config_status=
ebegin "Checking ${SVCNAME} configuration"
"${UNBOUND_CHECKCONF}" "${UNBOUND_CONFFILE}" 1>/dev/null 2>&1
_config_status=$?
if [ ${_config_status} -ne 0 ] ; then
# Run command again but this time we will show the output
# Ugly, but ...
"${UNBOUND_CHECKCONF}" "${UNBOUND_CONFFILE}"
else
if [ -n "${UNBOUND_PRESERVE_CACHE}" ] ; then
local _is_control_enabled=$(getconfig control-enable no)
if [ "${_is_control_enabled}" != "yes" ] ; then
eerror "Cannot preserve cache: control-enable is 'no' in the config file!"
_config_status=2
fi
fi
fi
eend ${_config_status} "failed, please correct errors above"
}
save_cache() {
if [ "${RC_CMD}" != "restart" ] ; then
UNBOUND_PRESERVE_CACHE=1 configtest || return 1
fi
ebegin "Saving cache to '${UNBOUND_CACHEFILE}'"
${UNBOUND_CONTROL} -c "${UNBOUND_CONFFILE}" dump_cache > "${UNBOUND_CACHEFILE}"
eend $?
}
start_pre() {
if [ "${RC_CMD}" != "restart" ] ; then
configtest || return 1
fi
}
start_post() {
if [ -n "${UNBOUND_PRESERVE_CACHE}" ] ; then
if [ -s "${UNBOUND_CACHEFILE}" ] ; then
ebegin "Loading cache from '${UNBOUND_CACHEFILE}'"
# Loading cache can fail which would block this runscript.
# Using `timeout` from coreutils will be our safeguard ...
timeout -k 5 ${UNBOUND_LOAD_CACHE_TIMEOUT} ${UNBOUND_CONTROL} -q -c "${UNBOUND_CONFFILE}" load_cache < "${UNBOUND_CACHEFILE}"
eend $?
else
ewarn "Loading cache from '${UNBOUND_CACHEFILE}' skipped: File does not exists or is empty!"
fi
fi
# It is not a fatal error if preserved cache could not be loaded
return 0
}
stop_pre() {
if [ "${RC_CMD}" = "restart" ] ; then
configtest || return 1
fi
if [ -n "${UNBOUND_PRESERVE_CACHE}" ] ; then
save_cache
fi
# It is not a fatal error if cache cannot be preserved
return 0
}
reload() {
configtest || return 1
ebegin "Reloading ${SVCNAME}"
start-stop-daemon --signal HUP --pidfile "${pidfile}"
eend $?
}
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