babel_add_iifrules() {
	[ "$#" -ne "1" ] && return 1

	local name="$1"
	local table='10'
	local prio='31'

	uci set network.${name}_rule=rule
	uci set network.${name}_rule.in="$name"
	uci set network.${name}_rule.lookup="$table"
	uci set network.${name}_rule.priority="$prio"

	uci set network.${name}_rule6=rule6
	uci set network.${name}_rule6.in="$name"
	uci set network.${name}_rule6.lookup="$table"
	uci set network.${name}_rule6.priority="$prio"

	return 0
}

babel_delete_iifrules() {
	[ "$#" -ne "1" ] && return 1

	local name="$1"

	uci -q del network.${name}_rule
	uci -q del network.${name}_rule6

	return 0
}

babel_add_peeraddr() {
	[ "$#" -ne "1" ] && return 1

	local option="$1"

	if peer_ip=$(uci -q get gateway.@gateway[0].peer_ip); then
		uci add_list "$option"="$peer_ip"
	elif router_ip=$(uci -q get gateway.meta.router_ip); then
		# use router_ip if no peer_ip is set
		uci add_list "$option"="$router_ip"
	elif ipaddr=$(uci -q get gateway.@client[0].ipaddr); then
		# use client interface address (without subnet) if no router_ip is set
		uci add_list "$option"=$(echo $ipaddr | cut -d / -f1)
	else
		echo "WARNING: No peer_ip, router_ip or client interface ipaddr set! IPv4 routing is not possible."
		return 1
	fi

	return 0
}

babel_add_peer6addr() {
	[ "$#" -ne "1" ] && return 1

	local option="$1"

	if peer_ip6=$(uci -q get gateway.@gateway[0].peer_ip6); then
		uci add_list "$option"="$peer_ip6"
	else
		return 1
	fi

	return 0
}

babel_add_interface() {
	[ "$#" -ne "4" ] && return 1

	local name="$1"
	local interface="$2"
	local type="$3"
	local rxcost="$4"

	uci set babeld.$name=interface
	uci set babeld.$name.ifname="$interface"
	uci set babeld.$name.type="$type"
	uci set babeld.$name.rxcost="$rxcost"

	return 0
}

babel_delete_interface() {
	[ "$#" -ne "1" ] && return 1

	local name="$1"

	uci -q del babeld.$name

	return 0
}

babel_add_redistribute_filter() {
	[ "$#" -ne "1" ] && return 1

	local prefix="$1"

	config=$(uci add babeld filter)
	uci set babeld.$config.type='redistribute'
	uci set babeld.$config.ip="$prefix"
	uci set babeld.$config.addedbyautoconfig='true'

	return 0
}

babel_remove_custom_redistribute_filters() {
	[ "$#" -ne "0" ] && return 1

	remove_filters() {
		local name="$1"

		# check if filter was added by configuregateway
		if ! [ "$(uci -q get babeld.$name.addedbyautoconfig)" = 'true' ]; then
			return
		fi

		uci -q del babeld.$name
	}

	config_load babeld
	config_foreach remove_filters filter

	return 0
}