#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
#                                                                             #
# 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/>.       #
#                                                                             #
###############################################################################

INFO_SETTINGS="HOOK PORT_PARENTS PORT_CHILDREN"

# This function is called after a device has been plugged
# into the system and got its correct name.
# The function is intended to create child ports and things
# like that.
hook_hotplug() {
	# If the hook does not handle the hotplug event, it
	# must return EXIT_NOT_HANDLED.
	exit ${EXIT_NOT_HANDLED}
}

# This function gets called when a device is plugged in
# to determine the right name.
# The first argument is the port which should be tested
# against the second argument which is the device that
# has been plugged in.
hook_hotplug_rename() {
	exit ${EXIT_FALSE}
}

hook_add() {
	cmd_not_implemented
}

hook_info() {
	local port="${1}"
	assert isset port
	shift

	settings_read "$(port_file ${port})"

	local key val
	for key in PORT_PARENTS PORT_CHILDREN; do
		val="${key}_VAR"
		val=${!val}
		eval "${key}=\"${!val}\""
	done

	for key in ${INFO_SETTINGS}; do
		echo "${key}=\"${!key}\""
	done

	exit ${ERROR_OK}
}

hook_status() {
	local port="${1}"
	assert isset port

	cli_device_headline "${port}" --long
	exit ${EXIT_OK}
}

# Create any virtual devices, but don't bring them up
# Must tolerate that the device may already exist
hook_create() {
	cmd_not_implemented
}

# Must tolerate that the device may not exist
hook_remove() {
	cmd_not_implemented
}

# Just bring up the device
hook_default_up() {
	local port="${1}"
	assert isset port

	if ! device_exists "${port}"; then
		log ERROR "Port '${port}' does not exist and cannot be brought up"
		exit ${EXIT_ERROR}
	fi

	# Bring up the port
	device_set_up "${port}"

	# Bring up all slaves if the port has any
	local slave
	for slave in $(port_get_slaves "${port}"); do
		port_up "${slave}"
	done
}

hook_up() {
	hook_default_up $@
}

hook_default_down() {
	local port="${1}"
	assert isset port

	if device_exists "${port}"; then
		device_set_down "${port}"
	fi

	# Bring down all slaves if the port has any
	local slave
	for slave in $(port_get_slaves "${port}"); do
		port_down "${slave}"
	done
}

hook_down() {
	hook_default_down $@
}