package/wireless-tools/files/wifi.sh

   1 hostapd_setup_vif() {
   2         local vif="$1"
   3         local driver="$2"
   4         local hostapd_cfg=
   5
   6         # Examples:
   7         # psk-mixed/tkip        => WPA1+2 PSK, TKIP
   8         # wpa-psk2/tkip+aes     => WPA2 PSK, CCMP+TKIP
   9         # wpa2/tkip+aes         => WPA2 RADIUS, CCMP+TKIP
  10         # ...
  11
  12         # TODO: move this parsing function somewhere generic, so that
  13         # later it can be reused by drivers that don't use hostapd
  14
  15         # crypto defaults: WPA2 vs WPA1
  16         case "$enc" in
  17                 wpa2*|WPA2*|*PSK2*|*psk2*)
  18                         wpa=2
  19                         crypto="CCMP"
  20                 ;;
  21                 *mixed*)
  22                         wpa=3
  23                         crypto="CCMP TKIP"
  24                 ;;
  25                 *)
  26                         wpa=1
  27                         crypto="TKIP"
  28                 ;;
  29         esac
  30
  31         # explicit override for crypto setting
  32         case "$enc" in
  33                 *tkip+aes|*TKIP+AES|*tkip+ccmp|*TKIP+CCMP) crypto="CCMP TKIP";;
  34                 *tkip|*TKIP) crypto="TKIP";;
  35                 *aes|*AES|*ccmp|*CCMP) crypto="CCMP";;
  36         esac
  37
  38         # use crypto/auth settings for building the hostapd config
  39         case "$enc" in
  40                 *psk*|*PSK*)
  41                         config_get psk "$vif" key
  42                         append hostapd_cfg "wpa_passphrase=$psk" "$N"
  43                 ;;
  44                 *wpa*|*WPA*)
  45                 # FIXME: add wpa+radius here
  46                 ;;
  47                 *)
  48                         return 0;
  49                 ;;
  50         esac
  51         config_get ifname "$vif" ifname
  52         config_get bridge "$vif" bridge
  53         config_get ssid "$vif" ssid
  54         cat > /var/run/hostapd-$ifname.conf <<EOF
  55 driver=$driver
  56 interface=$ifname
  57 ${bridge:+bridge=$bridge}
  58 ssid=$ssid
  59 debug=0
  60 wpa=$wpa
  61 wpa_pairwise=$crypto
  62 $hostapd_cfg
  63 EOF
  64         hostapd -B /var/run/hostapd-$ifname.conf
  65 }
  66