#!/sbin/openrc-run
# Copyright 2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

: ${KEA_USER:=dhcp}
: ${KEA_GROUP:=dhcp}
: ${KEA_CONFIG:=/etc/kea/${RC_SVCNAME}.conf}
: ${KEA_PIDFILE:=/run/kea/${RC_SVCNAME}.kea-${KEA_SVC}.pid}

description="kea ${KEA_SVC} services"
command="/usr/sbin/kea-${KEA_SVC}"
command_args="-c ${KEA_CONFIG}"
command_user="${KEA_USER}:${KEA_GROUP}"
pidfile="${KEA_PIDFILE}"
required_files="${KEA_CONFIG}"
start_stop_daemon_args="--background"

extra_commands="check_kea_svc checkconfig"
extra_started_commands="reload"

check_kea_svc() {
	if [ "${RC_SVCNAME}" = "kea" ]; then
		eerror "You are not supposed to run this script directly."
		eerror "Create a symlink for the kea service you want to run."
		eerror "Symlinks should have been created during installation."
		return 1
	fi

	case "${KEA_SVC}" in
	dhcp4)
	    capabilities="^cap_net_bind_service,^cap_net_raw"
	    ;;
	dhcp6|dhcp-ddns)
	    capabilities="^cap_net_bind_service"
	    ;;
	ctrl-agent)
	    ;;
	*)
	    eerror "KEA_SVC is undefined or invalid!"
	    eerror "It should be defined in /etc/conf.d/${RC_SVCNAME}"
	    return 1
	    ;;
	esac
}

checkconfig() {
	${command} -t ${KEA_CONFIG} 1>/dev/null 2>/dev/null || return 1
}

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

start_pre() {
	check_kea_svc || return 1

	if [ $(stat -c "%U:%G" ${KEA_CONFIG}) != "root:${KEA_GROUP}" ] ; then
		eerror "${KEA_CONFIG} config file is not owned by root:${KEA_GROUP}"
		eerror "you should reset the ownership:"
		eerror "chown root:${KEA_GROUP} ${KEA_CONFIG}"
		return 1
	fi

	if [ "${RC_CMD}" != "restart" ]; then
		checkconfig || return 1
	fi
}

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