package/hostapd/files/hostapd.sh

   1 hostapd_set_bss_options() {
   2         local var="$1"
   3         local vif="$2"
   4         local enc wpa_group_rekey wps_possible
   5
   6         config_get enc "$vif" encryption
   7         config_get wpa_group_rekey "$vif" wpa_group_rekey
   8         config_get_bool ap_isolate "$vif" isolate 0
   9
  10         config_get device "$vif" device
  11         config_get hwmode "$device" hwmode
  12         config_get phy "$device" phy
  13
  14         append "$var" "ctrl_interface=/var/run/hostapd-$phy" "$N"
  15
  16         if [ "$ap_isolate" -gt 0 ]; then
  17                 append "$var" "ap_isolate=$ap_isolate" "$N"
  18         fi
  19
  20         # Examples:
  21         # psk-mixed/tkip        => WPA1+2 PSK, TKIP
  22         # wpa-psk2/tkip+aes     => WPA2 PSK, CCMP+TKIP
  23         # wpa2/tkip+aes         => WPA2 RADIUS, CCMP+TKIP
  24         # ...
  25
  26         # TODO: move this parsing function somewhere generic, so that
  27         # later it can be reused by drivers that don't use hostapd
  28
  29         # crypto defaults: WPA2 vs WPA1
  30         case "$enc" in
  31                 wpa2*|*psk2*)
  32                         wpa=2
  33                         crypto="CCMP"
  34                 ;;
  35                 *mixed*)
  36                         wpa=3
  37                         crypto="CCMP TKIP"
  38                 ;;
  39                 *)
  40                         wpa=1
  41                         crypto="TKIP"
  42                 ;;
  43         esac
  44
  45         # explicit override for crypto setting
  46         case "$enc" in
  47                 *tkip+aes|*tkip+ccmp|*aes+tkip|*ccmp+tkip) crypto="CCMP TKIP";;
  48                 *aes|*ccmp) crypto="CCMP";;
  49                 *tkip) crypto="TKIP";;
  50         esac
  51
  52         # enforce CCMP for 11ng and 11na
  53         case "$hwmode:$crypto" in
  54                 *ng:TKIP|*na:TKIP) crypto="CCMP TKIP";;
  55         esac
  56
  57         # use crypto/auth settings for building the hostapd config
  58         case "$enc" in
  59                 *psk*)
  60                         config_get psk "$vif" key
  61                         if [ ${#psk} -eq 64 ]; then
  62                                 append "$var" "wpa_psk=$psk" "$N"
  63                         else
  64                                 append "$var" "wpa_passphrase=$psk" "$N"
  65                         fi
  66                         wps_possible=1
  67                 ;;
  68                 *wpa*)
  69                         # required fields? formats?
  70                         # hostapd is particular, maybe a default configuration for failures
  71                         config_get server "$vif" server
  72                         append "$var" "auth_server_addr=$server" "$N"
  73                         config_get port "$vif" port
  74                         port=${port:-1812}
  75                         append "$var" "auth_server_port=$port" "$N"
  76                         config_get secret "$vif" key
  77                         append "$var" "auth_server_shared_secret=$secret" "$N"
  78                         config_get nasid "$vif" nasid
  79                         append "$var" "nas_identifier=$nasid" "$N"
  80                         append "$var" "eapol_key_index_workaround=1" "$N"
  81                         append "$var" "radius_acct_interim_interval=300" "$N"
  82                         append "$var" "ieee8021x=1" "$N"
  83                         append "$var" "wpa_key_mgmt=WPA-EAP" "$N"
  84                         append "$var" "wpa_group_rekey=300" "$N"
  85                         append "$var" "wpa_gmk_rekey=640" "$N"
  86                 ;;
  87                 *wep*)
  88                         config_get key "$vif" key
  89                         key="${key:-1}"
  90                         case "$key" in
  91                                 [1234])
  92                                         for idx in 1 2 3 4; do
  93                                                 local zidx
  94                                                 zidx=$(($idx - 1))
  95                                                 config_get ckey "$vif" "key${idx}"
  96                                                 [ -n "$ckey" ] && \
  97                                                         append "$var" "wep_key${zidx}=$(prepare_key_wep "$ckey")" "$N"
  98                                         done
  99                                         append "$var" "wep_default_key=$((key - 1))"  "$N"
 100                                 ;;
 101                                 *)
 102                                         append "$var" "wep_key0=$(prepare_key_wep "$key")" "$N"
 103                                         append "$var" "wep_default_key=0" "$N"
 104                                 ;;
 105                         esac
 106                         case "$enc" in
 107                                 *shared*)
 108                                         auth_algs=2
 109                                 ;;
 110                                 *mixed*)
 111                                         auth_algs=3
 112                                 ;;
 113                         esac
 114                         wpa=0
 115                         crypto=
 116                 ;;
 117                 *)
 118                         wpa=0
 119                         crypto=
 120                 ;;
 121         esac
 122         append "$var" "auth_algs=${auth_algs:-1}" "$N"
 123         append "$var" "wpa=$wpa" "$N"
 124         [ -n "$crypto" ] && append "$var" "wpa_pairwise=$crypto" "$N"
 125         [ -n "$wpa_group_rekey" ] && append "$var" "wpa_group_rekey=$wpa_group_rekey" "$N"
 126
 127         config_get ssid "$vif" ssid
 128         config_get bridge "$vif" bridge
 129         config_get ieee80211d "$vif" ieee80211d
 130         config_get iapp_interface "$vif" iapp_interface
 131
 132         config_get_bool wps_pbc "$vif" wps_pushbutton 0
 133         [ -n "$wps_possible" -a "$wps_pbc" -gt 0 ] && {
 134                 append "$var" "eap_server=1" "$N"
 135                 append "$var" "wps_state=2" "$N"
 136                 append "$var" "ap_setup_locked=1" "$N"
 137                 append "$var" "config_methods=push_button" "$N"
 138         }
 139
 140         append "$var" "ssid=$ssid" "$N"
 141         [ -n "$bridge" ] && append "$var" "bridge=$bridge" "$N"
 142         [ -n "$ieee80211d" ] && append "$var" "ieee80211d=$ieee80211d" "$N"
 143         [ -n "$iapp_interface" ] && append "$var" iapp_interface=$(uci_get_state network "$iapp_interface" ifname "$iapp_interface") "$N"
 144
 145         if [ "$wpa" -ge "2" ]
 146         then
 147                 # RSN -> allow preauthentication
 148                 config_get rsn_preauth "$vif" rsn_preauth
 149                 if [ -n "$bridge" -a "$rsn_preauth" = 1 ]
 150                 then
 151                         append "$var" "rsn_preauth=1" "$N"
 152                         append "$var" "rsn_preauth_interfaces=$bridge" "$N"
 153                 fi
 154
 155                 # RSN -> allow management frame protection
 156                 config_get ieee80211w "$vif" ieee80211w
 157                 case "$ieee80211w" in
 158                         [012])
 159                                 append "$var" "ieee80211w=$ieee80211w" "$N"
 160                                 [ "$ieee80211w" -gt "0" ] && {
 161                                         config_get ieee80211w_max_timeout "$vif" ieee80211w_max_timeout
 162                                         config_get ieee80211w_retry_timeout "$vif" ieee80211w_retry_timeout
 163                                         [ -n "$ieee80211w_max_timeout" ] && \
 164                                                 append "$var" "assoc_sa_query_max_timeout=$ieee80211w_max_timeout" "$N"
 165                                         [ -n "$ieee80211w_retry_timeout" ] && \
 166                                                 append "$var" "assoc_sa_query_retry_timeout=$ieee80211w_retry_timeout" "$N"
 167                                 }
 168                         ;;
 169                 esac
 170         fi
 171 }
 172
 173 hostapd_setup_vif() {
 174         local vif="$1"
 175         local driver="$2"
 176         hostapd_cfg=
 177
 178         hostapd_set_bss_options hostapd_cfg "$vif"
 179         config_get ifname "$vif" ifname
 180         config_get device "$vif" device
 181         config_get channel "$device" channel
 182         config_get hwmode "$device" hwmode
 183         case "$hwmode" in
 184                 *bg|*gdt|*gst|*fh) hwmode=g;;
 185                 *adt|*ast) hwmode=a;;
 186         esac
 187         [ "$channel" = auto ] && channel=
 188         [ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
 189         cat > /var/run/hostapd-$ifname.conf <<EOF
 190 driver=$driver
 191 interface=$ifname
 192 ${hwmode:+hw_mode=${hwmode#11}}
 193 ${channel:+channel=$channel}
 194 $hostapd_cfg
 195 EOF
 196         hostapd -P /var/run/wifi-$ifname.pid -B /var/run/hostapd-$ifname.conf
 197 }
 198