#!/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/>.       #
#                                                                             #
###############################################################################

. /lib/network/header-port

HOOK_SETTINGS="HOOK ADDRESS PREFIX GATEWAY"

function _check() {
	assert isset ADDRESS
	assert isinteger PREFIX

	if [ ${PREFIX} -gt 64 ]; then
		error "PREFIX is greater than 64."
		exit ${EXIT_ERROR}
	fi
}

function _create() {
	local zone=${1}
	shift

	while [ $# -gt 0 ]; do
		case "${1}" in
			--address=*)
				ADDRESS=${1#--address=}
				;;
			--prefix=*)
				PREFIX=${1#--prefix=}
				;;
			--gateway=*)
				GATEWAY=${1#--gateway=}
				;;
		esac
		shift
	done

	# Store IPv6 address in full format
	ADDRESS=$(ipv6_explode ${ADDRESS})

	if [ -n "${GATEWAY}" ]; then
		GATEWAY=$(ipv6_explode ${GATEWAY})
	fi

	config_write $(zone_dir ${zone})/configs/${HOOK}.$(ipv6_hash ${ADDRESS}).${PREFIX} ${HOOK_SETTINGS}

	exit ${EXIT_OK}
}

function _up() {
	local zone=${1}
	local config=${2}
	shift 2

	if ! device_exists ${zone}; then
		error "Zone '${zone}' doesn't exist."
		exit ${EXIT_ERROR}
	fi
	
	config_read $(zone_dir ${zone})/configs/${config}

	ip_address_add ${zone} ${ADDRESS}/${PREFIX}

	if zone_is_nonlocal ${zone} && [ -n "${GATEWAY}" ]; then
		: # XXX to be done
	fi

	exit ${EXIT_OK}
}

function _down() {
	local zone=${1}
	local config=${2}
	shift 2

	if ! device_exists ${zone}; then
		error "Zone '${zone}' doesn't exist."
		exit ${EXIT_ERROR}
	fi
	
	config_read $(zone_dir ${zone})/configs/${config}

	ip_address_del ${zone} ${ADDRESS}/${PREFIX}

	exit ${EXIT_OK}
}

function _status() {
	local zone=${1}
	local config=${2}
	shift 2

	if ! device_exists ${zone}; then
		error "Zone '${zone}' doesn't exist."
		exit ${EXIT_ERROR}
	fi
	
	config_read $(zone_dir ${zone})/configs/${config}

	printf "        %10s - " "${HOOK}"
	if zone_has_ip ${zone} ${ADDRESS}/${PREFIX}; then
		echo -ne "${COLOUR_UP} UP ${COLOUR_NORMAL}"
	else
		echo -ne "${COLOUR_DOWN}DOWN${COLOUR_NORMAL}"
	fi
	echo " - $(ipv6_implode ${ADDRESS})/${PREFIX}"

	if [ -n "${GATEWAY}" ]; then
		echo "          Gateway: ${GATEWAY}"
	fi

	exit ${EXIT_OK}
}

run $@