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1#!/bin/bash
2###############################################################################
3# #
4# IPFire.org - A linux based firewall #
5# Copyright (C) 2015 IPFire Team <info@ipfire.org> #
6# #
7# This program is free software: you can redistribute it and/or modify #
8# it under the terms of the GNU General Public License as published by #
9# the Free Software Foundation, either version 3 of the License, or #
10# (at your option) any later version. #
11# #
12# This program is distributed in the hope that it will be useful, #
13# but WITHOUT ANY WARRANTY; without even the implied warranty of #
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15# GNU General Public License for more details. #
16# #
17# You should have received a copy of the GNU General Public License #
18# along with this program. If not, see <http://www.gnu.org/licenses/>. #
19# #
20###############################################################################
21
22# Check if all appropriate variables are set
23[ -n "${INTERFACE}" ] || exit 2
24
25# Ignore virtual interfaces, etc.
26case "${INTERFACE}" in
27 lo)
28 exit 0
29 ;;
30 tun*)
31 exit 0
32 ;;
33 ppp*)
34 exit 0
35 ;;
36esac
37
38# Check if INTERFACE actually exists
39[ -d "/sys/class/net/${INTERFACE}" ] || exit 1
40
41# If the network configuration is not readable,
42# we cannot go on.
43if [ ! -r "/var/ipfire/ethernet/settings" ]; then
44 exit 1
45fi
46
47# Read network settings
48eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
49
50# Standard zones
51ZONES="RED GREEN ORANGE BLUE"
52
53# Determine the address of INTERFACE
54ADDRESS="$(</sys/class/net/${INTERFACE}/address)"
55
56# Walk through all zones and find the matching interface
57for zone in ${ZONES}; do
58 address="${zone}_MACADDR"
59 device="${zone}_DEV"
60
61 # Skip if address or device is unset
62 [ -n "${!address}" -a -n "${!device}" ] || continue
63
64 # If a matching interface has been found we will
65 # print the name to which udev will rename it.
66 if [ "${ADDRESS}" = "${!address}" ]; then
67 echo "${!device}"
68 exit 0
69 fi
70done
71
72# If we get here we have not found a matching device,
73# but we won't return an error any way. The new device
74# will remain with the previous name.
75exit 0