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hostapd_setup_vif() {
local vif="$1"
local driver="$2"
local hostapd_cfg=
# Examples:
# psk-mixed/tkip => WPA1+2 PSK, TKIP
# wpa-psk2/tkip+aes => WPA2 PSK, CCMP+TKIP
# wpa2/tkip+aes => WPA2 RADIUS, CCMP+TKIP
# ...
# TODO: move this parsing function somewhere generic, so that
# later it can be reused by drivers that don't use hostapd
# crypto defaults: WPA2 vs WPA1
case "$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" "$N"
;;
*wpa*|*WPA*)
# required fields? formats?
# hostapd is particular, maybe a default configuration for failures
config_get server "$vif" server
append hostapd_cfg "auth_server_addr=$server" "$N"
config_get port "$vif" port
port=${port:-1812}
append hostapd_cfg "auth_server_port=$port" "$N"
config_get secret "$vif" key
append hostapd_cfg "auth_server_shared_secret=$secret" "$N"
config_get nasid "$vif" nasid
append hostapd_cfg "nas_identifier=$nasid" "$N"
append hostapd_cfg "eapol_key_index_workaround=1" "$N"
append hostapd_cfg "radius_acct_interim_interval=300" "$N"
append hostapd_cfg "ieee8021x=1" "$N"
append hostapd_cfg "auth_algs=1" "$N"
append hostapd_cfg "wpa_key_mgmt=WPA-EAP" "$N"
append hostapd_cfg "wpa_group_rekey=300" "$N"
append hostapd_cfg "wpa_gmk_rekey=640" "$N"
;;
*)
wpa=0
;;
esac
config_get ifname "$vif" ifname
config_get bridge "$vif" bridge
config_get ssid "$vif" ssid
config_get device "$vif" device
config_get channel "$device" channel
cat > /var/run/hostapd-$ifname.conf <<EOF
driver=$driver
interface=$ifname
hw_mode=g
channel=$channel
${bridge:+bridge=$bridge}
ssid=$ssid
debug=0
wpa=$wpa
wpa_pairwise=$crypto
$hostapd_cfg
EOF
hostapd -B /var/run/hostapd-$ifname.conf
}
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