#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2012  IPFire Network Development Team                         #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU General Public License as published by        #
# the Free Software Foundation, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# GNU General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

function wireless_create() {
	local device=${1}
	assert isset device
	shift

	local address
	local phy
	local type="managed"

	while [ $# -gt 0 ]; do
		case "${1}" in
			--address=*)
				address=$(cli_get_val ${1})
				;;
			--phy=*)
				phy=$(cli_get_val ${1})
				phy=$(phy_get ${phy})
				;;
			--type=*)
				type=$(cli_get_val ${1})

				# ap --> __ap
				[ "${type}" = "ap" ] && type="__ap"
				;;
			*)
				error "Unrecognized argument: ${1}"
				return ${EXIT_ERROR}
				;;
		esac
		shift
	done

	assert isoneof type managed __ap
	assert phy_exists ${phy}
	isset address || address=$(mac_generate)

	cmd_quiet iw phy ${phy} interface add ${device} type ${type}
	local ret=$?

	if [ ${ret} -eq ${EXIT_OK} ]; then
		log DEBUG "created wireless device '${device}' (${type})"

		if isset address; then
			device_set_address ${device} ${address}
		fi
	else
		log ERROR "could not create wireless device '${device}' (${type}): ${ret}"
	fi

	return ${ret}
}

function wireless_remove() {
	local device=${1}
	assert isset device

	if ! device_exists ${device}; then
		return ${EXIT_OK}
	fi

	# Tear down the device (if necessary).
	device_set_down ${device}

	# Remove it.
	cmd_quiet iw dev ${device} del
	local ret=$?

	if [ ${ret} -eq ${EXIT_OK} ]; then
		log DEBUG "removed wireless device '${device}'"
	else
		log ERROR "could not remove wireless device '${device}': ${ret}"
	fi

	return ${ret}
}

function wireless_set_channel() {
	local device=${1}
	assert isset device

	local channel=${2}
	assert isset channel

	device_exists ${device} || return ${EXIT_ERROR}

	cmd_quiet iw dev ${device} set channel ${channel}
}