#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: ip6addrctl
# REQUIRE: FILESYSTEMS
# BEFORE: netif
# KEYWORD: nojail

. /etc/rc.subr
. /etc/network.subr

name="ip6addrctl"
rcvar="ip6addrctl_enable"
start_cmd="ip6addrctl_start"
stop_cmd="ip6addrctl_stop"
extra_commands="status prefer_ipv6 prefer_ipv4"
status_cmd="ip6addrctl"
prefer_ipv6_cmd="ip6addrctl_prefer_ipv6"
prefer_ipv4_cmd="ip6addrctl_prefer_ipv4"
config_file="/etc/ip6addrctl.conf"

set_rcvar_obsolete ipv6_enable ipv6_activate_all_interfaces
set_rcvar_obsolete ipv6_prefer ip6addrctl_policy

ip6addrctl_prefer_ipv6()
{
	afexists inet6 || return 0

	ip6addrctl flush >/dev/null 2>&1
	ip6addrctl add ::1/128		50	0
	ip6addrctl add ::/0		40	1
	ip6addrctl add 2002::/16	30	2
	ip6addrctl add ::/96		20	3
	ip6addrctl add ::ffff:0:0/96	10	4
	checkyesno ip6addrctl_verbose && ip6addrctl
}

ip6addrctl_prefer_ipv4()
{
	afexists inet6 || return 0

	ip6addrctl flush >/dev/null 2>&1
	ip6addrctl add ::ffff:0:0/96	50	0
	ip6addrctl add ::1/128		40	1
	ip6addrctl add ::/0		30	2
	ip6addrctl add 2002::/16	20	3
	ip6addrctl add ::/96		10	4
	checkyesno ip6addrctl_verbose && ip6addrctl
}

ip6addrctl_start()
{
	afexists inet6 || return 0

	# install the policy of the address selection algorithm.
	case "${ip6addrctl_policy}" in
	[Aa][Uu][Tt][Oo])
		if [ -r "${config_file}" -a -s "${config_file}" ]; then
			ip6addrctl flush >/dev/null 2>&1
			ip6addrctl install "${config_file}"
			checkyesno ip6addrctl_verbose && ip6addrctl
		else
			if checkyesno ipv6_activate_all_interfaces; then
				ip6addrctl_prefer_ipv6
			else
				ip6addrctl_prefer_ipv4
			fi
		fi
	;;
	ipv4_prefer)
		ip6addrctl_prefer_ipv4
	;;
	ipv6_prefer)
		ip6addrctl_prefer_ipv6
	;;
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		# Backward compatibility when ipv6_prefer=YES
		ip6addrctl_prefer_ipv6
	;;
	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
		# Backward compatibility when ipv6_prefer=NO
		ip6addrctl_prefer_ipv4
	;;
	[Nn][Oo][Nn][Ee])
		ip6addrctl flush >/dev/null 2>&1
	;;
	*)
		warn "\$ip6addrctl_policy is invalid: ${ip6addrctl_policy}. " \
		    " \"ipv4_prefer\" is used instead."
		ip6addrctl_prefer_ipv4
	;;
	esac
}

ip6addrctl_stop()
{
	afexists inet6 || return 0

	ip6addrctl flush >/dev/null 2>&1
}

load_rc_config $name
run_rc_command "$1"