src/hooks/ports/batman-adv-port

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2013 Michael Tremer                                           #
   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 HOOK_SETTINGS="HOOK ADDRESS MESH_ID SSID CHANNEL PHY"
  25
  26 ADDRESS=$(mac_generate)
  27 CHANNEL=1
  28 MESH_ID=
  29 SSID=
  30
  31 # batman-adv inserts an additional header of 28 bytes, so we set the MTU
  32 # to 1560, that normal ethernet packets with 1500 bytes can pass the network.
  33 MTU=1560
  34
  35 function hook_check() {
  36         assert isset ADDRESS
  37         assert ismac ADDRESS
  38         assert isset CHANNEL
  39         assert isset MESH_ID
  40         assert ismac MESH_ID
  41         assert isset PHY
  42         assert ismac PHY
  43         assert isset SSID
  44 }
  45
  46 function hook_create() {
  47         while [ $# -gt 0 ]; do
  48                 case "${1}" in
  49                         --address=*)
  50                                 ADDRESS=$(cli_get_val ${1})
  51                                 ;;
  52                         --channel=*)
  53                                 CHANNEL=$(cli_get_val ${1})
  54                                 ;;
  55                         --phy=*)
  56                                 PHY=$(cli_get_val ${1})
  57                                 ;;
  58                         --ssid=*)
  59                                 SSID=$(cli_get_val ${1})
  60                                 ;;
  61                         --mesh-id=*)
  62                                 MESH_ID=$(cli_get_val ${1})
  63                                 ;;
  64                         *)
  65                                 warning "Ignoring unknown argument '${1}'"
  66                                 ;;
  67                 esac
  68                 shift
  69         done
  70
  71         # Save address of phy do identify it again
  72         PHY=$(phy_get ${PHY})
  73         PHY=$(phy_get_address ${PHY})
  74
  75         local port=$(port_find_free ${PORT_PATTERN_BATMAN_ADV_PORT})
  76         assert isset port
  77
  78         config_write $(port_file ${port}) ${HOOK_SETTINGS}
  79
  80         exit ${EXIT_OK}
  81 }
  82
  83 function hook_edit() {
  84         local port=${1}
  85         assert isset port
  86         shift
  87
  88         config_read $(port_file ${port})
  89
  90         while [ $# -gt 0 ]; do
  91                 case "${1}" in
  92                         --channel=*)
  93                                 CHANNEL=$(cli_get_val ${1})
  94                                 ;;
  95                         --mesh-id=*)
  96                                 MESH_ID=$(cli_get_val ${1})
  97                                 ;;
  98                         --ssid=*)
  99                                 SSID=$(cli_get_val ${1})
 100                                 ;;
 101                         *)
 102                                 warning "Unknown argument '${1}'"
 103                                 ;;
 104                 esac
 105                 shift
 106         done
 107
 108         config_write $(port_file ${port}) ${HOOK_SETTINGS}
 109
 110         exit ${EXIT_OK}
 111 }
 112
 113 function hook_up() {
 114         local port=${1}
 115         assert isset port
 116
 117         config_read $(port_file ${port})
 118
 119         # Check if the PHY is present.
 120         local phy=$(phy_get ${PHY})
 121         if ! isset phy; then
 122                 log DEBUG "phy '${PHY}' is not present"
 123                 exit ${EXIT_ERROR}
 124         fi
 125
 126         # Create the wireless device, if it does not exist, yet.
 127         if ! device_exists ${port}; then
 128                 wireless_create ${port} \
 129                         --address="${ADDRESS}" \
 130                         --phy="${phy}" \
 131                         --type="ibss"
 132         fi
 133
 134         # Set the MTU.
 135         device_set_mtu "${port}" "${MTU}"
 136
 137         # Join the ad-hoc network.
 138         wireless_ibss_join "${port}" --channel="${CHANNEL}" \
 139                 --bssid="${MESH_ID}" --essid="${SSID}"
 140
 141         # Add the device as a batman-adv device.
 142         local parent="$(hook_find_parent ${port})"
 143         if isset parent; then
 144                 batman_adv_interface_add "${parent}" "${port}"
 145         fi
 146
 147         exit ${EXIT_OK}
 148 }
 149
 150 function hook_down() {
 151         local port=${1}
 152         assert isset port
 153
 154         # Remove the batman-adv device.
 155         batman_adv_interface_del "${port}"
 156
 157         # Leave the ad-hoc network.
 158         wireless_ibss_leave "${port}"
 159
 160         # Remove the device if it is still present.
 161         if device_exists ${port}; then
 162                 wireless_remove ${port}
 163         fi
 164
 165         exit ${EXIT_OK}
 166 }
 167
 168 function hook_hotplug() {
 169         local port=${1}
 170         assert isset port
 171
 172         local phy=${2}
 173         assert isset phy
 174
 175         assert port_exists ${port}
 176
 177         # Read configuration of port.
 178         config_read $(port_file ${port})
 179
 180         # Get the address of the phy.
 181         local phy_address=$(phy_get_address ${phy})
 182
 183         # Check if the phy is the same we have
 184         # read from the configuration file.
 185         if [ "${PHY}" = "${phy_address}" ]; then
 186                 # Bring up the device.
 187                 port_up "${port}"
 188         fi
 189
 190         exit ${EXIT_OK}
 191 }
 192
 193 function hook_find_parent() {
 194         local port=${1}
 195         assert isset port
 196
 197         local p child hook
 198         for p in $(ports_get); do
 199                 hook=$(port_get_hook "${p}")
 200
 201                 if [ "${hook}" = "batman-adv" ]; then
 202                         for child in $(port_get_children "${p}"); do
 203                                 [ "${child}" = "${port}" ] || continue
 204
 205                                 print "${p}"
 206                                 return ${EXIT_OK}
 207                         done
 208                 fi
 209         done
 210
 211         return ${EXIT_ERROR}
 212 }