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bpfire/src/installer/start-networking.sh

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#!/bin/bash
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2014 IPFire Team <info@ipfire.org> #
# #
# 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 list_interfaces() {
local interface
for interface in /sys/class/net/*; do
[ -d "${interface}" ] || continue
interface="$(basename ${interface})"
case "${interface}" in
eth*)
echo "${interface}"
;;
esac
done
}
function try_dhcp() {
local interface="${1}"
# Bring up the interface
ip link set "${interface}" up
# Try to make the lights of the adapter light up
ethtool -i "${interface}" &>/dev/null
# Start the DHCP client
dhcpcd "${interface}"
}
function main() {
local interface
for interface in $(list_interfaces); do
if ! try_dhcp "${interface}"; then
echo "Could not acquire an IP address on ${interface}"
continue
fi
echo "Successfully started on ${interface}"
# Wait until everything is settled
sleep 15
return 0
done
return 1
}
main