#!/sbin/openrc-run
# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

CONFFILE="/etc/opendkim/${RC_SVCNAME}.conf"
required_files="${CONFFILE}"

command="/usr/sbin/opendkim"
pidfile="/run/${RC_SVCNAME}.pid"
command_args="-P ${pidfile} -x ${CONFFILE} -p ${OPENDKIM_SOCKET}"

depend() {
	use dns logger net
	before mta
}

check_cfg() {
	#
	# The opendkim.conf man page says,
	#
	#   For parameters that are Boolean in nature, only the first byte
	#   of the value is processed... For negative values, the following
	#   are accepted: "F", "f", "N", "n", "0".'
	#
	if grep --quiet '^[[:space:]]*Background[[:space:]]\+[FfNn0]' \
			"${CONFFILE}"; then
		eerror "${RC_SVCNAME} cannot run in the foreground!"
		return 1
	fi
}

start_pre() {
	# If this isn't a restart, make sure that the user's config isn't
	# busted before we try to start the daemon (this will produce
	# better error messages than if we just try to start it blindly).
	#
	# If, on the other hand, this *is* a restart, then the stop_pre
	# action will have ensured that the config is usable and we don't
	# need to do that again.
	if [ "${RC_CMD}" != "restart" ]; then
		check_cfg || return $?
	fi

	if [ -S "${OPENDKIM_SOCKET}" ] && ! fuser -s "${OPENDKIM_SOCKET}"; then
		# Remove stalled Unix socket if no other process is
		# using it
		if ! rm "${UNIX_SOCKET}"; then
			eerror "failed to remove stale unix socket ${OPENDKIM_SOCKET}"
			return 2
		fi
	fi

	# This relies on the "local:" prefix being there, but the conf.d
	# file explicitly states that it's not optional (contrary to what
	# the opendkim(8) man page says).
	if [ "${OPENDKIM_SOCKET#local:}" != "${OPENDKIM_SOCKET}" ]; then
		# The socket begins with "local:"
		OPENDKIM_SOCKET_PATH="${OPENDKIM_SOCKET#local:}"
		OPENDKIM_SOCKET_DIR="${OPENDKIM_SOCKET_PATH%/*}"

		# This is dangerous, but there's a big warning about it
		# in the conf.d file.
		checkpath --directory --owner opendkim "${OPENDKIM_SOCKET_DIR}"
	fi
}

stop_pre() {
	# If this is a restart, check to make sure the user's config
	# isn't busted before we stop the running daemon.
	if [ "${RC_CMD}" = "restart" ]; then
		check_cfg || return $?
	fi
}