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