#!/bin/sh
#------------------------------------------------------------------------------
# /etc/rc.d/rc130.wlan - write wlan-config to /var/run/wlan.conf	__FLI4LVER__
#                        and configure wlan
#
# Creation:	    05.08.2002 rresch
# Last Update:  $Id$
#------------------------------------------------------------------------------

begin_script WLAN

case $debug_active in
    yes) wlanconfig_debug=-x ;;
    *)   wlanconfig_debug=   ;;
esac

wlanconfig_debug=-x

# Normalizes hexadecimal digits by converting uppercase digits to lowercase ones.
#
# Input:
#   $1 = Name of variable containing the value to normalize.
# Result:
#   $1 contains normalized hexadecimal digits.
#
normalize_hex()
{
    eval local var=\$$1
    var=$(echo "$var" | tr '[A-F]' '[a-f]')
    eval $1=\$var
}

# setup wireless tools
# warum wird das hier angelegt???
for i in iwlist iwspy iwpriv iwgetid; do
    ln -s iwconfig /sbin/$i
done

# Saving complete WLAN-Config to CFG-Files
CONFIG_FILE="/var/run/wlan.conf"
CONFIG_DIR="/var/run"
case $OPT_WLAN in
  yes)
    if [ $WLAN_N -lt 1 ]
    then
      OPT_WLAN='no'
    fi
    ;;
esac

# Saving WLAN-Options to $CONFIG_FILE
case $OPT_WLAN in
  yes)
    # Add wlan to the right place
    if [ "$OPT_HTTPD" = "yes" ]
    then 
        httpd-menu.sh add -p 200 status_wlan.cgi "WLAN" '$_MT_stat' wlan
    fi
    # Simplify useage of hostapd_cli on fli4l with only one ap.
    if [ "$WLAN_1_MODE" = "master" -a "$WLAN_N" -eq 1 ]
    then
      ln -s /var/run/hostapd.wlan0 /var/run/hostapd
    fi

    cat <<EOF >$CONFIG_FILE
MAC_ADD=\`ip link show \$device | sed -n 'y/ABCDEF/abcdef/;s/.*\(\([0-9a-f]\{2\}:\)\{5\}[0-9a-f]\{2\}\).\+/\1/p'\`
MAC_ADDR=\`echo \$MAC_ADD | sed 's/://g'\`
case \$MAC_ADDR in
EOF

    for idx in `seq 1 $WLAN_N`
    do
      eval MAC=\$WLAN_${idx}_MAC
      MAC=`echo $MAC | tr ABCDEF abcdef`
      if [ ! -f $CONFIG_DIR/wlan_${MAC}.conf ]
      then
        {
          echo "    $MAC)" | sed 's/[:-]//g'
          echo "      . $CONFIG_DIR/wlan_$MAC.conf"
          echo "      if [ -f $CONFIG_DIR/wlan_\${device}_idx.conf ]; then rm $CONFIG_DIR/wlan_\${device}_idx.conf; fi"
          echo "      ln -s $CONFIG_DIR/wlan_${MAC}_idx.conf $CONFIG_DIR/wlan_\${device}_idx.conf"
          echo "      if [ -f $CONFIG_DIR/wlan_\${device}.conf ]; then rm $CONFIG_DIR/wlan_\${device}.conf; fi"
          echo "      ln -s $CONFIG_DIR/wlan_${MAC}.conf $CONFIG_DIR/wlan_\${device}.conf"
          echo '      ;;'
        } >>$CONFIG_FILE
        echo "OPT_WLAN='yes'" >$CONFIG_DIR/wlan_${MAC}.conf
        set | sed -n "/WLAN_${idx}_/s/WLAN_${idx}_/WLAN_/p" >> $CONFIG_DIR/wlan_${MAC}.conf
        while read line
        do
            case $line in
                WLAN_ACL_MAC_N*)
                    echo ${line} >> $CONFIG_DIR/wlan_${MAC}.conf.$$
                    ;;
                WLAN_MAC*|WLAN_ACL_MAC_*)
                    var=`echo ${line#*=*} | tr [[:upper:]] [[:lower:]]`
                    echo ${line%*=*}"="${var} >> $CONFIG_DIR/wlan_${MAC}.conf.$$
                    ;;
                *)
                    echo ${line} >> $CONFIG_DIR/wlan_${MAC}.conf.$$
                    ;;
            esac
        done <$CONFIG_DIR/wlan_${MAC}.conf
        mv $CONFIG_DIR/wlan_${MAC}.conf.$$ $CONFIG_DIR/wlan_${MAC}.conf
        if [ ! -f $CONFIG_DIR/wlan_${MAC}_idx.conf ]
        then
          >$CONFIG_DIR/wlan_${MAC}_idx.conf
        fi
        echo $CONFIG_DIR/wlan_${MAC}.conf >> $CONFIG_DIR/wlan_${MAC}_idx.conf
        if [ $idx -eq 1 ]
        then
          ln -s $CONFIG_DIR/wlan_$MAC.conf $CONFIG_DIR/wlan_default.conf
        fi
      else
        num=`sed -n '$=' $CONFIG_DIR/wlan_${MAC}_idx.conf`
        num=`expr $num + 1`
        case $num in
          2) mf='06' ;;
          3) mf='0a' ;;
          4) mf='0e' ;;
          5) mf='12' ;;
          6) mf='16' ;;
          7) mf='1a' ;;
          8) mf='1e' ;;
          *) mf='00' ;;
        esac
        MACN=`echo $MAC | sed "s/..\(.*\)/$mf\1/"`
        {
          echo "    $MACN)" | sed 's/[:-]//g'
          echo "      log_warn \"Cannot configure VAP-Interface directly - Please use device \`ls -l /var/run/ | sed -n \"s/.*\(wlan[0-9]\+\)\.conf.*$MAC.*/\1/p\"\`"\"
          echo '      exit 1'
          echo '      ;;'
        } >>$CONFIG_FILE
        set | sed -n "/WLAN_${idx}_/s/WLAN_${idx}_/WLAN_/p" >>$CONFIG_DIR/wlan_${MACN}.conf
        while read line
        do
            case $line in
                WLAN_ACL_MAC_N*)
                    echo ${line} >> $CONFIG_DIR/wlan_${MACN}.conf.$$
                    ;;
                WLAN_MAC*|WLAN_ACL_MAC_*)
                    var=`echo ${line#*=*} | tr [[:upper:]] [[:lower:]]`
                    echo ${line%*=*}"="${var} >> $CONFIG_DIR/wlan_${MACN}.conf.$$
                    ;;
                *)
                    echo ${line} >> $CONFIG_DIR/wlan_${MACN}.conf.$$
                    ;;
            esac
        done <$CONFIG_DIR/wlan_${MACN}.conf
        mv $CONFIG_DIR/wlan_${MACN}.conf.$$ $CONFIG_DIR/wlan_${MACN}.conf
        echo "WLAN_IDX='$CONFIG_DIR/wlan_${MAC}_idx.conf'" >>$CONFIG_DIR/wlan_${MACN}.conf
        echo $CONFIG_DIR/wlan_${MACN}.conf >>$CONFIG_DIR/wlan_${MAC}_idx.conf
      fi
    done
    {
      cat <<EOF
    *)
      log_warn "Unknown mac address \$MAC_ADD, using WLAN_1_* as default configuration for device \$device"
      log_warn "Change your Config to: WLAN_x_MAC='\$MAC_ADD' for device \$device"
      if [ -f $CONFIG_DIR/wlan_\${device}.conf ]; then rm $CONFIG_DIR/wlan_\${device}.conf; fi
      ln -s $CONFIG_DIR/wlan_default.conf $CONFIG_DIR/wlan_\${device}.conf
      if [ -f $CONFIG_DIR/wlan_\${device}_idx.conf ]; then rm $CONFIG_DIR/wlan_\${device}_idx.conf; fi
      echo /var/run/wlan_default.conf >$CONFIG_DIR/wlan_\${MAC_ADD}_idx.conf
      ln -s $CONFIG_DIR/wlan_\${MAC_ADD}_idx.conf $CONFIG_DIR/wlan_\${device}_idx.conf
      . $CONFIG_DIR/wlan_default.conf
      ;;
esac
EOF
    } >>$CONFIG_FILE
    ;;
  *)
    echo "OPT_WLAN='no'" >$CONFIG_FILE
    ;;
esac

devices="`iwconfig 2>/dev/null | sed -n '/^wlan[0-9]/s/ .*$//p'`"
[ "$devices" ] || log_error "No wlan devices found, skipping initialization of wlan subsystem."

if type -p iw >/dev/null
then
  if [ -n "$WLAN_REGDOMAIN" ]
  then
    iw reg set $WLAN_REGDOMAIN
  else
    iw reg set DE
  fi
fi

for dev in $devices
do
  # if use bridge with wlan interface then add bridge-devname 
  case $OPT_BRIDGE_DEV in
    yes)
      [ 0"$BRIDGE_DEV_N" -eq 0 ] || for bridge_idx in `seq 1 $BRIDGE_DEV_N`
      do
        eval bridge_devname='$BRIDGE_DEV_'$bridge_idx'_DEVNAME'
        eval bridge_devn='$BRIDGE_DEV_'$bridge_idx'_DEV_N'
        for bridge_ddx in `seq 1 $bridge_devn`
        do
          eval bridge_dev_dev='$BRIDGE_DEV_'$bridge_idx'_DEV_'$bridge_ddx'_DEV'
          [ "$bridge_dev_dev" = "$dev" ] && echo "BRIDGE_DEVNAME_${dev}='$bridge_devname'" >>$CONFIG_FILE
        done
      done
      ;;
  esac

  # Calling /usr/sbin/wlanconfig.sh for each wlan-device found
  log_info "configuring wlan on $dev ..."
  /usr/sbin/wlanconfig.sh $wlanconfig_debug $dev
  errorcode=$?
  if [ $errorcode -ne 0 ]
  then
    log_error "Error $errorcode while setting up $dev"
    case $errorcode in
      42) log_error "Could not start hostapd - disabling device for safety reasons"
          ;;
      43) log_error "Could not start wpa_supplicant - disabling device for safety reasons"
          ;;
    esac
    # error-codes 17 and above are fatal - skip this device
    if [ $errorcode -ge 17 ]
    then
        if [ ! -f /var/run/wlan.dontuse ]; then > /var/run/wlan.dontuse; fi
        echo $dev >>/var/run/wlan.dontuse
        ip link set dev $device down
    fi
  fi
  sleep 2
done

echo >/var/run/wlanconfig.done
end_script