src/hooks/ports/wireless-ap

   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 HOOK_PORT_PATTERN="${PORT_PATTERN_ACCESSPOINT}"
  25
  26 HOOK_SETTINGS="ADDRESS BROADCAST_SSID CHANNEL MODE PHY SSID"
  27 HOOK_SETTINGS="${HOOK_SETTINGS} ENCRYPTION KEY"
  28
  29 ADDRESS=$(mac_generate)
  30 BROADCAST_SSID=on
  31 CHANNEL=0
  32 ENCRYPTION=""
  33 KEY=""
  34 SSID=
  35
  36 # Perform radar detection by default when possible
  37 DFS="on"
  38
  39 hook_check_settings() {
  40         assert isset ADDRESS
  41         assert ismac ADDRESS
  42         assert isset BROADCAST_SSID
  43         assert isbool BROADCAST_SSID
  44         assert isset CHANNEL
  45         assert isbool DFS
  46         assert isset MODE
  47         assert isoneof MODE ${HOSTAPD_SUPPORTED_MODES}
  48         assert isset PHY
  49         assert ismac PHY
  50         assert isset SSID
  51
  52         if isset ENCRYPTION; then
  53                 assert isoneof ENCRYPTION WPA WPA2 WPA/WPA2
  54
  55                 assert isset KEY
  56                 assert [ ${#KEY} -ge 8 ]
  57                 assert [ ${#KEY} -le 63 ]
  58         fi
  59 }
  60
  61 hook_parse_cmdline() {
  62         while [ $# -gt 0 ]; do
  63                 case "${1}" in
  64                         --broadcast-ssid=*)
  65                                 BROADCAST_SSID=$(cli_get_val "${1}")
  66                                 ;;
  67                         --channel=*)
  68                                 CHANNEL=$(cli_get_val "${1}")
  69                                 ;;
  70                         --dfs=*)
  71                                 DFS="$(cli_get_val "${1}")"
  72
  73                                 if enabled DFS; then
  74                                         DFS="on"
  75                                 elif disabled DFS; then
  76                                         DFS="off"
  77                                 else
  78                                         error "Invalid value for DFS: ${DFS}"
  79                                         return ${EXIT_ERROR}
  80                                 fi
  81                                 ;;
  82                         --encryption=*)
  83                                 ENCRYPTION=$(cli_get_val "${1}")
  84                                 ;;
  85                         --key=*)
  86                                 KEY=$(cli_get_val "${1}")
  87                                 ;;
  88                         --mac=*)
  89                                 ADDRESS=$(cli_get_val "${1}")
  90                                 ;;
  91                         --mode=*)
  92                                 MODE=$(cli_get_val "${1}")
  93
  94                                 if ! isoneof MODE ${HOSTAPD_SUPPORTED_MODES}; then
  95                                         error "Unsupported mode: ${MODE}"
  96                                         error "Mode must be one of ${HOSTAPD_SUPPORTED_MODES}"
  97                                         return ${EXIT_ERROR}
  98                                 fi
  99                                 ;;
 100                         --phy=*)
 101                                 PHY=$(cli_get_val "${1}")
 102                                 ;;
 103                         --ssid=*)
 104                                 SSID=$(cli_get_val "${1}")
 105                                 ;;
 106                         *)
 107                                 warning "Ignoring unknown argument '${1}'"
 108                                 ;;
 109                 esac
 110                 shift
 111         done
 112
 113         # Generate a random MAC address if none is set
 114         if ! isset ADDRESS; then
 115                 ADDRESS="$(mac_generate)"
 116         fi
 117
 118         # MODE must be set
 119         if ! isset MODE; then
 120                 error "--mode is not set"
 121                 return ${EXIT_ERROR}
 122         fi
 123
 124         # Save address of phy do identify it again
 125         PHY=$(phy_get ${PHY})
 126         PHY=$(phy_get_address ${PHY})
 127 }
 128
 129 hook_edit() {
 130         local port=${1}
 131         assert isset port
 132
 133         if ! hook_default_edit "$@"; then
 134                 return ${EXIT_ERROR}
 135         fi
 136
 137         # To apply all changes, we need to restart the port
 138         port_restart "${port}"
 139 }
 140
 141 hook_create() {
 142         local port="${1}"
 143         assert isset port
 144
 145         device_exists "${port}" && exit ${EXIT_OK}
 146
 147         port_settings_read "${port}" ${HOOK_SETTINGS}
 148
 149         # Check if the PHY is present.
 150         local phy=$(phy_get ${PHY})
 151         if ! isset phy; then
 152                 log DEBUG "phy '${PHY}' is not present"
 153                 exit ${EXIT_ERROR}
 154         fi
 155
 156         # Create the wireless device
 157         wireless_create "${port}" \
 158                 --phy="${phy}" \
 159                 --type="ap" \
 160                 --address="${ADDRESS}"
 161
 162         exit ${EXIT_OK}
 163 }
 164
 165 hook_remove() {
 166         local port="${1}"
 167         assert isset port
 168
 169         # Remove the device if present
 170         if device_exists "${port}"; then
 171                 wireless_remove "${port}"
 172         fi
 173
 174         exit ${EXIT_OK}
 175 }
 176
 177 hook_up() {
 178         local port="${1}"
 179         assert isset port
 180
 181         # The port must already exist before
 182         # hostapd is started. Otherwise it will
 183         # fail horribly over and over again.
 184         assert device_exists "${port}"
 185
 186         hostapd_start "${port}"
 187 }
 188
 189 hook_down() {
 190         local port="${1}"
 191         assert isset port
 192
 193         hostapd_stop "${port}"
 194 }
 195
 196 hook_hotplug() {
 197         local port="${1}"
 198         assert isset port
 199
 200         case "$(hotplug_action)" in
 201                 add)
 202                         # Create the port when the phy is plugged in
 203                         if hotplug_event_port_uses_phy "${port}"; then
 204                                 hook_create "${port}"
 205                         fi
 206                         ;;
 207
 208                 remove)
 209                         # Stop hostapd
 210                         if hotplug_event_port_is_interface "${port}"; then
 211                                 hostapd_stop "${port}"
 212
 213                                 exit ${EXIT_OK}
 214                         fi
 215                         ;;
 216         esac
 217
 218         exit ${EXIT_NOT_HANDLED}
 219 }