#!/sbin/openrc-run
# Copyright 1999-2019 Gentoo Authors
# Copyright 2019 Alarig Le Lay <alarig@grifon.fr>
# Distributed under the terms of the GNU General Public License v2

extra_started_commands="reload"

pidfile="/run/bird/${RC_SVCNAME}.pid"
# See https://bird.network.cz/?get_doc&v=20&f=bird-1.html#ss1.4 for priveleges
# requirements.
command="/usr/sbin/bird"
retry=15

: ${CONF_FILE:="/etc/${RC_SVCNAME}.conf"}
SOCK="/run/${RC_SVCNAME}.ctl"

client_args="-s ${SOCK}"
command_args="-u bird -g bird ${client_args} -R -c ${CONF_FILE} -P ${pidfile}"
client_args="${client_args} -r"

depend() {
	need net
	use logger
	after firewall
}

start_pre() {
	# Used to store bird's PID file, which iscreated after privilege drop.
	checkpath --directory --owner bird:bird --mode 0775 /run/bird
	# Ensure permissions on configuration file are correct for upgrades.
	checkpath --file --owner root:bird --mode 0640 ${CONF_FILE}
}

check_run() {
	BIRD_CHECK_CONF="birdc ${client_args} configure check \"${CONF_FILE}\""
	# Check if the bird parser returns what we want
	# We can’t use $? because it’s always 0 if the sock works
	STATE=$(${BIRD_CHECK_CONF} | grep 'Configuration OK')

	if [ -n "${STATE}" ]; then
		return 0
	else
		# We remove the first three lines (garbage informations), the
		# errors begin after that
		eerror "$(${BIRD_CHECK_CONF} | sed '1,3d')"
		return 1
	fi
}

reload() {
	check_run || return 1
	ebegin "Reloading BIRD"
	start-stop-daemon --signal HUP --pidfile "${pidfile}"
	eend $?
}

stop_pre() {
	if [ "${RC_CMD}" = "restart" ] ; then
		check_run || return 1
	fi
}