#!/bin/sh
# Created by: Mark Felder <feld@FreeBSD.org>
# $FreeBSD: head/net/vnstat/files/vnstat.in 385777 2015-05-08 13:24:35Z feld $

# PROVIDE: vnstat
# REQUIRE: LOGIN
# KEYWORD: shutdown

# Add the following line to /etc/rc.conf to enable vnstat:
#
# vnstat_enable="YES"
# vnstat_additional_ifaces="em1"

. /etc/rc.subr

name=vnstat
rcvar=vnstat_enable
load_rc_config $name

: ${vnstat_enable:=NO}
: ${vnstat_pidfile=/var/run/vnstat/vnstat.pid}
: ${vnstat_config=%%PREFIX%%/etc/vnstat.conf}
: ${vnstat_flags="-d --noadd"}
: ${vnstat_user:=%%USERS%%}
: ${vnstat_group:=%%GROUPS%%}

command="%%PREFIX%%/sbin/vnstatd"
command_args="-p ${vnstat_pidfile} --config ${vnstat_config}"
pidfile="${vnstat_pidfile}"
user_cmd="%%PREFIX%%/bin/vnstat"

start_precmd=vnstat_startprecmd

create_iface_database()
{
	local iface="$1"
	local descr="$2"
	su -m ${vnstat_user} -c "${user_cmd} --create --iface $iface" >/dev/null 2>&1 ||
	  ! echo "$name: Failed to create database for the $descr interface $iface" || return 1
	echo "$name: Created the database for the $descr interface $iface"
}

vnstat_startprecmd()
{
	local dbdir iface

	if [ ! -e ${pidfile%/*} ]; then
		install -d -o ${vnstat_user} -g ${vnstat_group} ${pidfile%/*};
	fi

	dbdir=$(grep "^DatabaseDir" ${vnstat_config} | awk 'BEGIN{FS="\042"}{print $2}')
	if [ ! -d ${dbdir} ]; then
		install -d -o ${vnstat_user} -g ${vnstat_group} ${dbdir};
	fi

	iface=$(grep "^Interface" ${vnstat_config} | head -1 | awk 'BEGIN{FS="\042"}{print $2}')
	if [ -n "${iface}" -a ! -f ${dbdir}/${iface} ]; then
		create_iface_database $iface "default" || return 1
	fi
	if [ -n "${vnstat_additional_ifaces}" ]; then
		for iface in ${vnstat_additional_ifaces}; do 
			if [ ! -f ${dbdir}/${iface} ]; then
				create_iface_database $iface "additional" || return 1
			fi
		done
	fi

	if [ ! -d "/var/run/vnstat" ]; then
		install -d -o ${vnstat_user} -g ${vnstat_group} /var/run/vnstat;
	fi
}

run_rc_command "$1"