functions.hostapd

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2012  IPFire Network Development Team                         #
   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 HOSTAPD_CONTROL_INTERFACE_DIR="/run/hostapd/ctrl"
  23
  24 function hostapd_config_write() {
  25         local device=${1}
  26         assert isset device
  27
  28         local file=${2}
  29         assert isset file
  30
  31         # Shift the device and file argument.
  32         shift 2
  33
  34         local broadcast_ssid
  35         local channel
  36         local country_code
  37         local encryption
  38         local ieee80211d="1"
  39         local key
  40         local mode
  41         local ssid
  42         local wmm="1"
  43
  44         while [ $# -gt 0 ]; do
  45                 case "${1}" in
  46                         --broadcast-ssid=*)
  47                                 broadcast_ssid=$(cli_get_val ${1})
  48                                 ;;
  49                         --channel=*)
  50                                 channel=$(cli_get_val ${1})
  51                                 ;;
  52                         --country-code=*)
  53                                 country_code=$(cli_get_val ${1})
  54                                 ;;
  55                         --encryption=*)
  56                                 encryption=$(cli_get_val ${1})
  57                                 ;;
  58                         --ieee80211d=*)
  59                                 local val="$(cli_get_val "${1}")"
  60                                 if enabled val; then
  61                                         ieee80211d="1"
  62                                 else
  63                                         ieee80211d="0"
  64                                 fi
  65                                 ;;
  66                         --key=*)
  67                                 key=$(cli_get_val ${1})
  68                                 ;;
  69                         --mode=*)
  70                                 mode=$(cli_get_val ${1})
  71                                 ;;
  72                         --ssid=*)
  73                                 ssid=$(cli_get_val ${1})
  74                                 ;;
  75                         --wmm=*)
  76                                 local val="$(cli_get_val "${1}")"
  77                                 if enabled val; then
  78                                         wmm="1"
  79                                 else
  80                                         wmm="0"
  81                                 fi
  82                                 ;;
  83                         *)
  84                                 warning_log "Ignoring unknown argument '${1}'."
  85                                 ;;
  86                 esac
  87                 shift
  88         done
  89
  90         assert isset broadcast_ssid
  91         assert isbool broadcast_ssid
  92
  93         assert isset channel
  94         assert isinteger channel
  95
  96         assert isset country_code
  97         assert isset mode
  98         assert isset ssid
  99
 100         # Check if key is set when encryption is used.
 101         if isset encryption; then
 102                 assert isoneof encryption WPA WPA2 WPA/WPA2
 103                 assert isset key
 104         fi
 105
 106         # Create configuration directory.
 107         local config_dir=$(dirname ${file})
 108         mkdir -p ${HOSTAPD_CONTROL_INTERFACE_DIR} ${config_dir} 2>/dev/null
 109
 110         config_header "hostapd" > ${file}
 111
 112         # Interface configuration
 113         (
 114                 print "# Interface configuration"
 115                 print "driver=nl80211"
 116                 print "interface=${device}"
 117                 print
 118         ) >> ${file}
 119
 120         # Wireless configuration
 121         local ignore_broadcast_ssid
 122         if enabled broadcast_ssid; then
 123                 ignore_broadcast_ssid="0"
 124         else
 125                 ignore_broadcast_ssid="1"
 126         fi
 127
 128         local hw_mode ieee80211n="0"
 129         if [ "${mode}" = "n" ]; then
 130                 if [ ${channel} -le 15 ]; then
 131                         hw_mode="g"
 132                 else
 133                         hw_mode="a"
 134                 fi
 135                 ieee80211n="1"
 136         else
 137                 hw_mode="${mode}"
 138         fi
 139
 140         (
 141                 print "# Wireless configuration"
 142                 print "channel=${channel}"
 143                 print "country_code=${country_code}"
 144                 print "hw_mode=${hw_mode}"
 145                 print "ieee80211d=${ieee80211d}"
 146                 print "ieee80211n=${ieee80211n}"
 147                 print "ignore_broadcast_ssid=${ignore_broadcast_ssid}"
 148
 149                 if contains_spaces "${ssid}"; then
 150                         print "ssid=\"${ssid}\""
 151                 else
 152                         print "ssid=${ssid}"
 153                 fi
 154
 155                 # WMM
 156                 print "wmm_enabled=${wmm}"
 157
 158                 print
 159         ) >> ${file}
 160
 161         # Control interface.
 162         (
 163                 print "# Control interface"
 164                 print "ctrl_interface=${HOSTAPD_CONTROL_INTERFACE_DIR}"
 165                 print "ctrl_interface_group=0"
 166                 print
 167         ) >> ${file}
 168
 169         # Encryption settings
 170         if isset encryption; then
 171                 local encryption_mode=0
 172                 case "${encryption}" in
 173                         WPA)
 174                                 encryption_mode=1
 175                                 ;;
 176                         WPA2)
 177                                 encryption_mode=2
 178                                 ;;
 179                         WPA/WPA2)
 180                                 encryption_mode=3
 181                                 ;;
 182                 esac
 183
 184                 (
 185                         print "# Encryption settings"
 186                         print "wpa=${encryption_mode}"
 187                         print "wpa_passphrase=${key}"
 188                         print "wpa_key_mgmt=WPA-PSK"
 189                         print "wpa_pairwise=TKIP"
 190                         print "rsn_pairwise=CCMP"
 191                         print
 192                 ) >> ${file}
 193         fi
 194
 195         return ${EXIT_OK}
 196 }
 197
 198 function hostapd_start() {
 199         local device=${1}
 200         assert isset device
 201
 202         service_start "hostapd@${device}.service"
 203         local ret=$?
 204
 205         if [ ${ret} -eq ${EXIT_OK} ]; then
 206                 log DEBUG "hostapd has been successfully started on '${device}'"
 207         else
 208                 log ERROR "Could not start hostapd on '${device}': ${ret}"
 209                 return ${EXIT_ERROR}
 210         fi
 211
 212         return ${EXIT_OK}
 213 }
 214
 215 function hostapd_stop() {
 216         local device=${1}
 217         assert isset device
 218
 219         service_stop "hostapd@${device}.service"
 220 }