package/hostapd/files/hostapd.sh

   1 hostapd_set_bss_options() {
   2         local var="$1"
   3         local vif="$2"
   4         local enc wpa_group_rekey
   5
   6         config_get enc "$vif" encryption
   7         config_get wpa_group_rekey "$vif" wpa_group_rekey
   8
   9         # Examples:
  10         # psk-mixed/tkip        => WPA1+2 PSK, TKIP
  11         # wpa-psk2/tkip+aes     => WPA2 PSK, CCMP+TKIP
  12         # wpa2/tkip+aes         => WPA2 RADIUS, CCMP+TKIP
  13         # ...
  14
  15         # TODO: move this parsing function somewhere generic, so that
  16         # later it can be reused by drivers that don't use hostapd
  17
  18         # crypto defaults: WPA2 vs WPA1
  19         case "$enc" in
  20                 wpa2*|*psk2*)
  21                         wpa=2
  22                         crypto="CCMP"
  23                 ;;
  24                 *mixed*)
  25                         wpa=3
  26                         crypto="CCMP TKIP"
  27                 ;;
  28                 *)
  29                         wpa=1
  30                         crypto="TKIP"
  31                 ;;
  32         esac
  33
  34         # explicit override for crypto setting
  35         case "$enc" in
  36                 *tkip+aes|*tkip+ccmp) crypto="CCMP TKIP";;
  37                 *aes|*ccmp) crypto="CCMP";;
  38                 *tkip) crypto="TKIP";;
  39         esac
  40
  41         # use crypto/auth settings for building the hostapd config
  42         case "$enc" in
  43                 *psk*)
  44                         config_get psk "$vif" key
  45                         if [ ${#psk} -eq 64 ]; then
  46                                 append "$var" "wpa_psk=$psk" "$N"
  47                         else
  48                                 append "$var" "wpa_passphrase=$psk" "$N"
  49                         fi
  50                 ;;
  51                 *wpa*)
  52                         # required fields? formats?
  53                         # hostapd is particular, maybe a default configuration for failures
  54                         config_get server "$vif" server
  55                         append "$var" "auth_server_addr=$server" "$N"
  56                         config_get port "$vif" port
  57                         port=${port:-1812}
  58                         append "$var" "auth_server_port=$port" "$N"
  59                         config_get secret "$vif" key
  60                         append "$var" "auth_server_shared_secret=$secret" "$N"
  61                         config_get nasid "$vif" nasid
  62                         append "$var" "nas_identifier=$nasid" "$N"
  63                         append "$var" "eapol_key_index_workaround=1" "$N"
  64                         append "$var" "radius_acct_interim_interval=300" "$N"
  65                         append "$var" "ieee8021x=1" "$N"
  66                         append "$var" "auth_algs=1" "$N"
  67                         append "$var" "wpa_key_mgmt=WPA-EAP" "$N"
  68                         append "$var" "wpa_group_rekey=300" "$N"
  69                         append "$var" "wpa_gmk_rekey=640" "$N"
  70                 ;;
  71                 *)
  72                         wpa=0
  73                         crypto=
  74                 ;;
  75         esac
  76         append "$var" "wpa=$wpa" "$N"
  77         [ -n "$crypto" ] && append "$var" "wpa_pairwise=$crypto" "$N"
  78         [ -n "$wpa_group_rekey" ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"
  79
  80         config_get ssid "$vif" ssid
  81         config_get bridge "$vif" bridge
  82         config_get ieee80211d "$vif" ieee80211d
  83
  84         append "$var" "ssid=$ssid" "$N"
  85         [ -n "$bridge" ] && append "$var" "bridge=$bridge" "$N"
  86         [ -n "$ieee80211d" ] && append "$var" "ieee80211d=$ieee80211d" "$N"
  87 }
  88
  89 hostapd_setup_vif() {
  90         local vif="$1"
  91         local driver="$2"
  92         hostapd_cfg=
  93
  94         hostapd_set_bss_options hostapd_cfg "$vif"
  95         config_get ifname "$vif" ifname
  96         config_get device "$vif" device
  97         config_get channel "$device" channel
  98         config_get hwmode "$device" hwmode
  99         case "$hwmode" in
 100                 bg) hwmode=g;;
 101         esac
 102         [ "$channel" = auto ] && channel=
 103         [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
 104         cat > /var/run/hostapd-$ifname.conf <<EOF
 105 ctrl_interface=/var/run/hostapd-$ifname
 106 driver=$driver
 107 interface=$ifname
 108 ${hwmode:+hw_mode=$hwmode}
 109 ${channel:+channel=$channel}
 110 $hostapd_cfg
 111 EOF
 112         hostapd -P /var/run/wifi-$ifname.pid -B /var/run/hostapd-$ifname.conf
 113 }
 114