network: Some more general IP functions.

[people/arne_f/network.git] / functions.ip

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

function ip_split_prefix() {
	local address=${1}

	assert isset address

	echo "${address%%/*}"
}

function ip_get_prefix() {
	local address=${1}

	assert isset address

	echo "${address##*/}"
}

function ip_detect_protocol() {
	local address=${1}

	assert isset address

	local protocol
	for protocol in ipv4 ipv6; do
		if ${protocol}_is_valid ${address}; then
			echo "${protocol}"
			return ${EXIT_OK}
		fi
	done

	return ${EXIT_ERROR}
}