#!/sbin/openrc-run
# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

PID_FILE=${PID_FILE:-/run/tor.pid}
STOP_TIMEOUT=${STOP_TIMEOUT:-${GRACEFUL_TIMEOUT:-60}}
TOR_DATA_DIR=${TOR_DATA_DIR:-/var/lib/tor/data}
TOR_HOME_DIR=${TOR_HOME_DIR:-/var/lib/tor}
TOR_RC=${TOR_RC:-/etc/tor/torrc}
TOR_USER=${TOR_USER:-tor}

description="Anonymizing overlay network for TCP"
description_checkconfig="Check for valid config file"
description_reload="Reload the configuration"
extra_commands="checkconfig"
extra_started_commands="reload"

depend() {
	need net
}

_check_tor_rc() {
	local file="$1" home_dir="$2" data_dir="$3" quiet_mode="$4"

	ebegin "Checking if configuration file '${file}' is valid"

	if [ ! -f "${file}" ]; then
		eend 1
		eerror "Tor configuration file '${file}' does not exist."
		eerror "Example is in /etc/tor/torrc.sample."
		return 1
	fi

	(
		[ "${quiet_mode}" = true ] && exec >/dev/null 2>&1
		export HOME="${home_dir}"
		exec /usr/bin/tor --verify-config -f "${file}" --User "${TOR_USER}" --DataDirectory "${data_dir}"
	) || {
		eend 1
		eerror "File failed with 'tor --verify-config' test."
		eerror "Complete command: HOME='${home_dir}' /usr/bin/tor --verify-config -f '${file}' --User '${TOR_USER}' --DataDirectory '${data_dir}'"
		return 1
	}

	eend 0
}

checkconfig() {
	_check_tor_rc "${TOR_RC}" "${TOR_HOME_DIR}" "${TOR_DATA_DIR}" false
}

start() {
	_check_tor_rc "${TOR_RC}" "${TOR_HOME_DIR}" "${TOR_DATA_DIR}" true || return 1

	ebegin "Starting Tor"

	start-stop-daemon --start \
			--background \
			--name tor \
			--pidfile "${PID_FILE}" \
			--make-pidfile \
			--env HOME="${TOR_HOME_DIR}" \
			-- /usr/bin/tor -f "${TOR_RC}" --DataDirectory "${TOR_DATA_DIR}" --User "${TOR_USER}"

	eend "$?"
}

stop() {
	ebegin "Stopping Tor"

	start-stop-daemon --stop --progress --signal INT --retry "${STOP_TIMEOUT}" \
			--pidfile "${PID_FILE}"

	eend "$?"
}

reload() {
	if [ ! -f "${PID_FILE}" ]; then
		eerror "${RC_SVCNAME} is not running"
		return 1
	fi

	checkconfig || return 1

	ebegin "Reloading Tor configuration"
	start_stop_daemon --signal HUP --pidfile "${PID_FILE}"
	eend "$?"
}