#!/bin/sh
#
# Copyright (c) 2003 The FreeBSD Project. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE PROJECT ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE PROJECT BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $FreeBSD: src/etc/rc.d/netif,v 1.2 2003/06/29 05:34:41 mtm Exp $
#

# PROVIDE: netif
# REQUIRE: cleanvar mountcritlocal serial sppp sysctl tty

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

name="netif"
rcvar=`set_rcvar`
start_cmd="netif_start"
stop_cmd="netif_stop"
cloneup_cmd="clone_up"
clonedown_cmd="clone_down"
wlanup_cmd="wlan_up"
wlandown_cmd="wlan_down"
extra_commands="cloneup clonedown wlanup wlandown"
_cmdifn=

netif_start()
{
	# Set the list of interfaces to work on.
	#
	_cmdifn=$*

	if [ -z "$_cmdifn" ]; then
		#
		# We're operating as a general network start routine.
		#

		# Create IEEE 802.11 interfaces
		wlan_up

		# Create cloned interfaces
		clone_up

		# Create IPv6<-->IPv4 tunnels
		gif_up

		# Rename interfaces.
		ifnet_rename
	fi

	# Configure the interface(s).
	netif_common ifn_start verbose
}

netif_stop()
{
	# Set the list of interfaces to work on.
	#
	_cmdifn=$*

	echo -n "Stopping network:"

	# Deconfigure the interface(s)
	netif_common ifn_stop
	echo '.'
}

# netif_common routine verbose
#	Common configuration subroutine for network interfaces. This
#	routine takes all the preparatory steps needed for configuring
#	an interface and then calls $routine. If $verbose is specified,
#	it will call ifconfig(8) to show, in long format, the configured
#	interfaces. If $verbose is not given, it will simply output the
#	configured interface(s).
#
netif_common()
{
	_func=
	_verbose=

	if [ -z "$1" ]; then
		err 1 "netif_common(): No function name specified."
	else
		_func="$1"
	fi
	[ -n "$2" ] && _verbose=yes

	# Get a list of network interfaces.
	_ifn_list="`list_net_interfaces`"

	# Set the scope of the command (all interfaces or just one).
	#
	_cooked_list=
	if [ -n "$_cmdifn" ]; then
		for i in $_cmdifn ; do
			eval _if=\"`expr "$_ifn_list" : ".*\(${i}\).*"`\"
			if [ -z "$_if" ]; then
				err 1 "No such network interface: $i"
			fi
			_cooked_list="$_cooked_list $_if"
		done
	else
		_cooked_list="$_ifn_list"
	fi

	for ifn in ${_cooked_list}; do
		if ${_func} ${ifn} ; then
			eval showstat_$ifn=1
		else
			_fail="$_fail $ifn"
		fi
	done

	# Display interfaces configured by this script
	#
	for ifn in ${_cooked_list}; do
		eval showstat=\$showstat_${ifn}
		if [ ! -z ${showstat} ]; then
			if [ -n "$_verbose" ]; then
				ifconfig ${ifn}
			else
				echo -n " ${ifn}"
			fi
		fi
	done
	debug "The following interfaces were not configured: $_fail"
}

# ifn_start ifn
#	Bring up and configure an interface.
#
ifn_start()
{
	local ifn cfg
	ifn="$1"
	cfg=1

	[ -z "$ifn" ] && err 1 "ifn_start called without an interface"

	ifscript_up ${ifn} && cfg=0
	ifconfig_up ${ifn} && cfg=0
	ifalias_up ${ifn} && cfg=0
	childif_create ${ifn} && cfg=0

	return $cfg
}

# ifn_stop ifn
#	Shutdown and de-configure an interface.
#
ifn_stop()
{
	local ifn cfg
	ifn="$1"
	cfg=1

	[ -z "$ifn" ] && err 1 "ifn_stop called without an interface"

	childif_destroy ${ifn} && cfg=0
	ifalias_down ${ifn} && cfg=0
	ifconfig_down ${ifn} && cfg=0
	ifscript_down ${ifn} && cfg=0

	return $cfg
}

# childif_create ifn
#	Create and configure child interfaces.  Return 0 if child
#	interfaces are created.
#
childif_create()
{
	local cfg child child_vlans create_args ifn i
	cfg=1
	ifn=$1

	# Create vlan interfaces
	child_vlans=`get_if_var $ifn vlans_IF`

	for child in ${child_vlans}; do
		if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
			child="${ifn}.${child}"
			create_args=`get_if_var $child create_args_IF`
			ifconfig $child create ${create_args} && cfg=0
		else
			create_args="vlandev $ifn `get_if_var $child create_args_IF`"
			if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then
				ifconfig $child create ${create_args} && cfg=0
			else
				i=`ifconfig vlan create ${create_args}`
				ifconfig $i name $child && cfg=0
			fi
		fi
		ifn_start $child
	done

	return ${cfg}
}

# childif_destroy ifn
#	Destroy child interfaces.
#
childif_destroy()
{
	local cfg child child_vlans ifn
	cfg=1
	ifn=$1

	child_vlans=`get_if_var $ifn vlans_IF`
	for child in ${child_vlans}; do
		if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
			child="${ifn}.${child}"
		fi
		if ! ifexists $child; then
			continue
		fi
		ifn_stop $child
		ifconfig $child destroy && cfg=0
	done

	return ${cfg}
}

# Load the old "network" config file also for compatibility
load_rc_config network
load_rc_config $name
run_rc_command $*