package/madwifi/files/lib/wifi/madwifi.sh

   1 #!/bin/sh
   2 append DRIVERS "atheros"
   3
   4 scan_atheros() {
   5         local device="$1"
   6         local wds
   7         local adhoc sta ap
   8
   9         config_get vifs "$device" vifs
  10         for vif in $vifs; do
  11
  12                 config_get ifname "$vif" ifname
  13                 config_set "$vif" ifname "${ifname:-ath}"
  14
  15                 config_get mode "$vif" mode
  16                 case "$mode" in
  17                         adhoc|sta|ap)
  18                                 append $mode "$vif"
  19                         ;;
  20                         wds)
  21                                 config_get addr "$vif" bssid
  22                                 config_get ssid "$vif" ssid
  23                                 [ -z "$addr" -a -n "$ssid" ] && {
  24                                         config_set "$vif" wds 1
  25                                         config_set "$vif" mode sta
  26                                         mode="sta"
  27                                         addr="$ssid"
  28                                 }
  29                                 ${addr:+append $mode "$vif"}
  30                         ;;
  31                         *) echo "$device($vif): Invalid mode, ignored."; continue;;
  32                 esac
  33         done
  34
  35         case "${adhoc:+1}:${sta:+1}:${ap+1}" in
  36                 # valid mode combinations
  37                 1::) wds="";;
  38                 :1:1)config_set "$device" nosbeacon 1;; # AP+STA, can't use beacon timers for STA
  39                 :1:);;
  40                 ::1);;
  41                 :::);;
  42                 *) echo "$device: Invalid mode combination in config"; return 1;;
  43         esac
  44
  45         config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${wds:+$wds }"
  46 }
  47
  48 hostapd_setup_vif() {
  49         local vif="$1"
  50         local driver="$2"
  51         local hostapd_cfg=
  52
  53         # Examples:
  54         # psk-mixed/tkip        => WPA1+2 PSK, TKIP
  55         # wpa-psk2/tkip+aes     => WPA2 PSK, CCMP+TKIP
  56         # wpa2/tkip+aes         => WPA2 RADIUS, CCMP+TKIP
  57         # ...
  58
  59         # TODO: move this parsing function somewhere generic, so that
  60         # later it can be reused by drivers that don't use hostapd
  61
  62         # crypto defaults: WPA2 vs WPA1
  63         case "$enc" in
  64                 wpa2*|WPA2*|*PSK2*|*psk2*)
  65                         wpa=2
  66                         crypto="CCMP"
  67                 ;;
  68                 *mixed*)
  69                         wpa=3
  70                         crypto="CCMP TKIP"
  71                 ;;
  72                 *)
  73                         wpa=1
  74                         crypto="TKIP"
  75                 ;;
  76         esac
  77
  78         # explicit override for crypto setting
  79         case "$enc" in
  80                 *tkip+aes|*TKIP+AES|*tkip+ccmp|*TKIP+CCMP) crypto="CCMP TKIP";;
  81                 *tkip|*TKIP) crypto="TKIP";;
  82                 *aes|*AES|*ccmp|*CCMP) crypto="CCMP";;
  83         esac
  84
  85         # use crypto/auth settings for building the hostapd config
  86         case "$enc" in
  87                 *psk*|*PSK*)
  88                         config_get psk "$vif" key
  89                         append hostapd_cfg "wpa_passphrase=$psk" "$N"
  90                 ;;
  91                 *wpa*|*WPA*)
  92                 # FIXME: add wpa+radius here
  93                 ;;
  94                 *)
  95                         return 0;
  96                 ;;
  97         esac
  98         config_get ifname "$vif" ifname
  99         config_get bridge "$vif" bridge
 100         config_get ssid "$vif" ssid
 101         cat > /var/run/hostapd-$ifname.conf <<EOF
 102 driver=$driver
 103 interface=$ifname
 104 ${bridge:+bridge=$bridge}
 105 ssid=$ssid
 106 debug=0
 107 wpa=$wpa
 108 wpa_pairwise=$crypto
 109 $hostapd_cfg
 110 EOF
 111         hostapd -B /var/run/hostapd-$ifname.conf
 112 }
 113
 114 disable_atheros() (
 115         local device="$1"
 116
 117         # kill all running hostapd and wpa_supplicant processes that
 118         # are running on atheros vifs
 119         for pid in `pidof hostapd wpa_supplicant`; do
 120                 grep ath /proc/$pid/cmdline >/dev/null && \
 121                         kill $pid
 122         done
 123
 124         include /lib/network
 125         cd /proc/sys/net
 126         for dev in *; do
 127                 grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
 128                         ifconfig "$dev" down
 129                         unbridge "$dev"
 130                         wlanconfig "$dev" destroy
 131                 }
 132         done
 133         return 0
 134 )
 135
 136 enable_atheros() {
 137         config_get channel "$device" channel
 138         config_get vifs "$device" vifs
 139
 140         disable_atheros "$device"
 141         for vif in $vifs; do
 142                 nosbeacon=
 143                 config_get ifname "$vif" ifname
 144                 config_get enc "$vif" encryption
 145                 config_get mode "$vif" mode
 146
 147                 [ "$mode" = sta ] && config_get nosbeacon "$device" nosbeacon
 148
 149                 config_get ifname "$vif" ifname
 150                 ifname=$(wlanconfig "$ifname" create wlandev "$device" wlanmode "$mode" ${nosbeacon:+nosbeacon})
 151                 [ $? -ne 0 ] && {
 152                         echo "enable_atheros($device): Failed to set up $mode vif $ifname" >&2
 153                         continue
 154                 }
 155                 config_set "$vif" ifname "$ifname"
 156
 157                 config_get wds "$vif" wds
 158                 case "$wds" in
 159                         1|on|enabled) wds=1;;
 160                         *) wds=0;;
 161                 esac
 162                 iwpriv "$ifname" wds "$wds"
 163
 164                 wpa=
 165                 case "$enc" in
 166                         WEP|wep)
 167                                 for idx in 1 2 3 4; do
 168                                         config_get key "$vif" "key${idx}"
 169                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
 170                                 done
 171                                 config_get key "$vif" key
 172                                 iwconfig "$ifname" enc "[${key:-1}]"
 173                         ;;
 174                 esac
 175
 176                 case "$mode" in
 177                         wds)
 178                                 config_get addr "$vif" bssid
 179                                 iwpriv "$ifname" wds_add "$addr"
 180                         ;;
 181                         *)
 182                                 config_get ssid "$vif" ssid
 183                         ;;
 184                 esac
 185                 iwconfig "$ifname" channel "$channel"
 186                 ifconfig "$ifname" up
 187
 188                 local net_cfg bridge
 189                 net_cfg="$(find_net_config "$vif")"
 190                 [ -z "$net_cfg" ] || {
 191                         bridge="$(bridge_interface "$net_cfg")"
 192                         config_set "$vif" bridge "$bridge"
 193                         start_net "$ifname" "$net_cfg"
 194                 }
 195                 case "$mode" in
 196                         ap)
 197                                 hostapd_setup_vif "$vif" madwifi || {
 198                                         echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
 199                                         # make sure this wifi interface won't accidentally stay open without encryption
 200                                         ifconfig "$ifname" down
 201                                         wlanconfig "$ifname" destroy
 202                                         continue
 203                                 }
 204                         ;;
 205                         wds|sta)
 206                                 iwconfig "$ifname" essid "$ssid"
 207                                 # FIXME: implement wpa_supplicant calls here
 208                         ;;
 209                 esac
 210         done
 211 }
 212
 213
 214 detect_atheros() {
 215         cd /proc/sys/dev
 216         [ -d ath ] || return
 217         for dev in wifi*; do
 218                 config_get type "$dev" type
 219                 [ "$type" = atheros ] && return
 220                 cat <<EOF
 221 config wifi-device  $dev
 222         option type     atheros
 223         option channel  5
 224
 225 config wifi-iface
 226         option device   $dev
 227 #       option network  lan
 228         option mode     ap
 229         option ssid     OpenWrt
 230         option hidden   0
 231         option encryption none
 232
 233 EOF
 234         done
 235 }
 236