src/hooks/ports/ethernet

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2010  Michael Tremer & Christian Schmidt                      #
   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 . /usr/lib/network/header-port
  23
  24 # DEVICE equals the actual MAC address of the device.
  25 # If ADDRESS is set, the device will get ADDRESS set for its MAC address.
  26
  27 HOOK_SETTINGS="HOOK ADDRESS DEVICE"
  28
  29 hook_check_settings() {
  30         assert ismac DEVICE
  31
  32         if isset ADDRESS; then
  33                 assert ismac ADDRESS
  34         fi
  35 }
  36
  37 hook_parse_cmdline() {
  38         while [ $# -gt 0 ]; do
  39                 case "${1}" in
  40                         --address=*)
  41                                 ADDRESS="$(cli_get_val "${1}")"
  42
  43                                 if ! mac_is_valid "${ADDRESS}"; then
  44                                         error "Invalid MAC address: ${ADDRESS}"
  45                                         return ${EXIT_ERROR}
  46                                 fi
  47                                 ;;
  48                         *)
  49                                 error "Unknown argument: ${1}"
  50                                 return ${EXIT_ERROR}
  51                                 ;;
  52                 esac
  53                 shift
  54         done
  55 }
  56
  57 hook_new() {
  58         local port=${1}
  59         assert isset port
  60         shift
  61
  62         ADDRESS=""
  63         DEVICE=$(device_get_address ${port})
  64
  65         port_settings_write "${port}" ${HOOK_SETTINGS}
  66
  67         exit ${EXIT_OK}
  68 }
  69
  70 hook_create() {
  71         # Nothing to do here. Real ethernet devices cannot
  72         # be created. They are just there.
  73         exit ${EXIT_OK}
  74 }
  75
  76 hook_remove() {
  77         exit ${EXIT_OK}
  78 }
  79
  80 hook_hotplug_rename() {
  81         local port=${1}
  82         assert isset port
  83
  84         local device=${2}
  85         assert isset device
  86
  87         # Read in the conifguration file.
  88         port_settings_read "${port}" ${HOOK_SETTINGS}
  89
  90         # Get the current MAC address of the device.
  91         local address=$(device_get_address ${device})
  92         assert isset address
  93
  94         # Check if the address matches with the configuration.
  95         if list_match "${address}" ${DEVICE} ${ADDRESS}; then
  96                 log DEBUG "Device '${device}' equals port '${port}'."
  97
  98                 # Change the MAC address, if needed.
  99                 if isset ADDRESS; then
 100                         device_set_address "${device}" "${ADDRESS}"
 101                 fi
 102
 103                 # Everything is done.
 104                 exit ${EXIT_OK}
 105         fi
 106
 107         log DEBUG "Device '${device}' does not equal port '${port}'."
 108         exit ${EXIT_ERROR}
 109 }