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 "$ifname"
 156
 157                 config_get "$device" mode
 158                 iwpriv "$ifname" mode "${mode:-11g}"
 159
 160                 config_get wds "$vif" wds
 161                 case "$wds" in
 162                         1|on|enabled) wds=1;;
 163                         *) wds=0;;
 164                 esac
 165                 iwpriv "$ifname" wds "$wds"
 166
 167                 wpa=
 168                 case "$enc" in
 169                         WEP|wep)
 170                                 for idx in 1 2 3 4; do
 171                                         config_get key "$vif" "key${idx}"
 172                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
 173                                 done
 174                                 config_get key "$vif" key
 175                                 iwconfig "$ifname" enc "[${key:-1}]"
 176                         ;;
 177                 esac
 178
 179                 case "$mode" in
 180                         wds)
 181                                 config_get addr "$vif" bssid
 182                                 iwpriv "$ifname" wds_add "$addr"
 183                         ;;
 184                         *)
 185                                 config_get ssid "$vif" ssid
 186                         ;;
 187                 esac
 188                 iwconfig "$ifname" channel "$channel"
 189                 ifconfig "$ifname" up
 190
 191                 local net_cfg bridge
 192                 net_cfg="$(find_net_config "$vif")"
 193                 [ -z "$net_cfg" ] || {
 194                         bridge="$(bridge_interface "$net_cfg")"
 195                         config_set "$vif" bridge "$bridge"
 196                         start_net "$ifname" "$net_cfg"
 197                 }
 198                 case "$mode" in
 199                         ap)
 200                                 hostapd_setup_vif "$vif" madwifi || {
 201                                         echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
 202                                         # make sure this wifi interface won't accidentally stay open without encryption
 203                                         ifconfig "$ifname" down
 204                                         wlanconfig "$ifname" destroy
 205                                         continue
 206                                 }
 207                         ;;
 208                         wds|sta)
 209                                 iwconfig "$ifname" essid "$ssid"
 210                                 # FIXME: implement wpa_supplicant calls here
 211                         ;;
 212                 esac
 213         done
 214 }
 215
 216
 217 detect_atheros() {
 218         cd /proc/sys/dev
 219         [ -d ath ] || return
 220         for dev in wifi*; do
 221                 config_get type "$dev" type
 222                 [ "$type" = atheros ] && return
 223                 cat <<EOF
 224 config wifi-device  $dev
 225         option type     atheros
 226         option channel  5
 227
 228 config wifi-iface
 229         option device   $dev
 230 #       option network  lan
 231         option mode     ap
 232         option ssid     OpenWrt
 233         option hidden   0
 234         option encryption none
 235
 236 EOF
 237         done
 238 }
 239