lots of enhancements for the madwifi script (hostapd calls for ap with wpa implemente...
authorFelix Fietkau <nbd@openwrt.org>
Fri, 22 Dec 2006 07:58:06 +0000 (07:58 +0000)
committerFelix Fietkau <nbd@openwrt.org>
Fri, 22 Dec 2006 07:58:06 +0000 (07:58 +0000)
SVN-Revision: 5888

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

index 569c96e..de9870c 100755 (executable)
@@ -1,5 +1,4 @@
 #!/bin/sh
-set -x
 append DRIVERS "atheros"
 
 scan_atheros() {
@@ -20,15 +19,22 @@ scan_atheros() {
                        ;;
                        wds)
                                config_get addr "$vif" bssid
-                               ${addr:+append wds "$addr"}
+                               config_get ssid "$vif" ssid
+                               [ -z "$addr" -a -n "$ssid" ] && {
+                                       config_set "$vif" wds 1
+                                       config_set "$vif" mode sta
+                                       mode="sta"
+                                       addr="$ssid"
+                               }
+                               ${addr:+append $mode "$vif"}
                        ;;
                        *) echo "$device($vif): Invalid mode, ignored."; continue;;
                esac
        done
 
-       case "${adhoc:+1}:${sta:+}:${ap+1}" in
+       case "${adhoc:+1}:${sta:+1}:${ap+1}" in
                # valid mode combinations
-               1::);;
+               1::) wds="";;
                :1:1)config_set "$device" nosbeacon 1;; # AP+STA, can't use beacon timers for STA
                :1:);;
                ::1);;
@@ -36,13 +42,84 @@ scan_atheros() {
                *) echo "$device: Invalid mode combination in config"; return 1;;
        esac
 
-       config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }"
+       config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${wds:+$wds }"
+}
+
+hostapd_setup_vif() {
+       local vif="$1"
+       local driver="$2"
+       local hostapd_cfg=
+
+       # Examples:
+       # psk-mixed/tkip        => WPA1+2 PSK, TKIP
+       # wpa-psk2/tkip+aes     => WPA2 PSK, CCMP+TKIP
+       # wpa2/tkip+aes         => WPA2 RADIUS, CCMP+TKIP
+       # ...
+
+       # TODO: move this parsing function somewhere generic, so that
+       # later it can be reused by drivers that don't use hostapd
        
-       [ -z "$adhoc" ] && config_set "$device" wds "$wdsifs"
+       # crypto defaults: WPA2 vs WPA1
+       case "$enc" in
+               wpa2*|WPA2*|*PSK2*|*psk2*)
+                       wpa=2
+                       crypto="CCMP"
+               ;;
+               *mixed*)
+                       wpa=3
+                       crypto="CCMP TKIP"
+               ;;
+               *) 
+                       wpa=1
+                       crypto="TKIP"
+               ;;
+       esac
+
+       # explicit override for crypto setting
+       case "$enc" in
+               *tkip+aes|*TKIP+AES|*tkip+ccmp|*TKIP+CCMP) crypto="CCMP TKIP";;
+               *tkip|*TKIP) crypto="TKIP";;
+               *aes|*AES|*ccmp|*CCMP) crypto="CCMP";;
+       esac
+       
+       # use crypto/auth settings for building the hostapd config
+       case "$enc" in
+               *psk*|*PSK*)
+                       config_get psk "$vif" key
+                       append hostapd_cfg "wpa_passphrase=$psk" "$N"
+               ;;
+               *wpa*|*WPA*)
+               # FIXME: add wpa+radius here
+               ;;
+               *)
+                       return 0;
+               ;;
+       esac
+       config_get ifname "$vif" ifname
+       config_get bridge "$vif" bridge
+       config_get ssid "$vif" ssid
+       cat > /var/run/hostapd-$ifname.conf <<EOF
+driver=$driver
+interface=$ifname
+${bridge:+bridge=$bridge}
+ssid=$ssid
+debug=0
+wpa=$wpa
+wpa_pairwise=$crypto
+$hostapd_cfg
+EOF
+       hostapd -B /var/run/hostapd-$ifname.conf
 }
 
 disable_atheros() (
        local device="$1"
+
+       # kill all running hostapd and wpa_supplicant processes that
+       # are running on atheros vifs 
+       for pid in `pidof hostapd wpa_supplicant`; do
+               grep ath /proc/$pid/cmdline >/dev/null && \
+                       kill $pid
+       done
        
        include /lib/network
        cd /proc/sys/net
@@ -50,16 +127,17 @@ disable_atheros() (
                grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
                        ifconfig "$dev" down 
                        unbridge "$dev"
-                       wlanconfig $dev destroy
+                       wlanconfig "$dev" destroy
                }
        done
+       return 0
 )
 
 enable_atheros() {
        config_get channel "$device" channel
-       config_get wds "$device" wds
        config_get vifs "$device" vifs
-
+       
+       disable_atheros "$device"
        for vif in $vifs; do
                nosbeacon=
                config_get ifname "$vif" ifname
@@ -70,12 +148,19 @@ enable_atheros() {
                
                config_get ifname "$vif" ifname
                ifname=$(wlanconfig "$ifname" create wlandev "$device" wlanmode "$mode" ${nosbeacon:+nosbeacon})
-               config_set "$vif" ifname "$ifname"
-               
                [ $? -ne 0 ] && {
-                       echo "enable_atheros($device): Failed to set up vif $ifname" >&2
+                       echo "enable_atheros($device): Failed to set up $mode vif $ifname" >&2
                        continue
                }
+               config_set "$vif" ifname "$ifname"
+
+               config_get wds "$vif" wds
+               case "$wds" in
+                       1|on|enabled) wds=1;;
+                       *) wds=0;;
+               esac
+               iwpriv "$ifname" wds "$wds"
+
                wpa=
                case "$enc" in
                        WEP|wep)
@@ -84,42 +169,45 @@ enable_atheros() {
                                        iwconfig "$ifname" enc "[$idx]" "${key:-off}"
                                done
                                config_get key "$vif" key
-                               iwconfig "$ifname" enc "$key"
+                               iwconfig "$ifname" enc "[${key:-1}]"
                        ;;
                esac
+
                case "$mode" in
-                       ap)
-                               local hostapd_cfg=
-                               case "$enc" in
-                                       *psk*|*PSK*)
-                                       # FIXME: wpa
-                                       ;;
-                                       *wpa*|*WPA*)
-                                       # FIXME: add wpa+radius here
-                                       ;;
-                               esac
+                       wds)
+                               config_get addr "$vif" bssid
+                               iwpriv "$ifname" wds_add "$addr"
                        ;;
-                       sta)
-                               # FIXME: implement wpa_supplicant calls here
+                       *)
+                               config_get ssid "$vif" ssid
                        ;;
-               esac    
-               
-               config_get ssid "$vif" ssid
-               append if_up "iwconfig $ifname essid $ssid channel $channel" ";$N"
-               append if_up "sleep 1" ";$N"
-               append if_up "ifconfig $ifname up" ";$N"
+               esac
+               iwconfig "$ifname" channel "$channel"
+               ifconfig "$ifname" up
                
                local net_cfg bridge
                net_cfg="$(find_net_config "$vif")"
                [ -z "$net_cfg" ] || {
                        bridge="$(bridge_interface "$net_cfg")"
-                       append if_up "start_net '$ifname' '$net_cfg'" ";$N"
+                       config_set "$vif" bridge "$bridge"
+                       start_net "$ifname" "$net_cfg"
                }
-               # TODO: start hostapd
+               case "$mode" in
+                       ap)
+                               hostapd_setup_vif "$vif" madwifi || {
+                                       echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
+                                       # make sure this wifi interface won't accidentally stay open without encryption
+                                       ifconfig "$ifname" down
+                                       wlanconfig "$ifname" destroy
+                                       continue
+                               }
+                       ;;
+                       wds|sta)
+                               iwconfig "$ifname" essid "$ssid"
+                               # FIXME: implement wpa_supplicant calls here
+                       ;;
+               esac
        done
-       
-       #killall -KILL $hostapd >&- 2>&-
-       eval "$if_up"
 }
 
 
@@ -136,6 +224,7 @@ config wifi-device  $dev
 
 config wifi-iface
        option device   $dev
+#      option network  lan
        option mode     ap
        option ssid     OpenWrt
        option hidden   0