src/installer/start-networking.sh

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2014  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 function list_interfaces() {
  23         local interface
  24
  25         for interface in /sys/class/net/*; do
  26                 [ -d "${interface}" ] || continue
  27
  28                 interface="$(basename ${interface})"
  29                 case "${interface}" in
  30                         eth*)
  31                                 echo "${interface}"
  32                                 ;;
  33                 esac
  34         done
  35 }
  36
  37 function try_dhcp() {
  38         local interface="${1}"
  39
  40         # Bring up the interface
  41         ip link set "${interface}" up
  42
  43         # Try to make the lights of the adapter light up
  44         ethtool -i "${interface}" &>/dev/null
  45
  46         # Start the DHCP client
  47         dhcpcd "${interface}"
  48 }
  49
  50 function main() {
  51         local interface
  52         for interface in $(list_interfaces); do
  53                 if ! try_dhcp "${interface}"; then
  54                         echo "Could not acquire an IP address on ${interface}"
  55                         continue
  56                 fi
  57
  58                 echo "Successfully started on ${interface}"
  59
  60                 # Wait until everything is settled
  61                 sleep 15
  62
  63                 return 0
  64         done
  65
  66         return 1
  67 }
  68
  69 main