#!/bin/sh
#------------------------------------------------------------------------------
# /usr/sbin/wlanconfig - configure wlan options to device      2.1.9
#
# Creation:	    05.08.2002 rresch
# Last Update:  $Id$
#------------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

device=$1

if [ -n "$device" ]
then
  if [ "$device" != "`echo $device | sed 's/wds//'`" ]
  then
    mecho -err "Warning: cannot configure WDS-Interface: \"$device\" "
    exit
  else
    if [ -f /etc/wlan/wlan.opts ]
    then
      if [ -n "`iwconfig \"$device\" 2>/dev/null`" ]
      then
        . /etc/wlan/wlan.opts
      else
		mecho -err " \"$device\" does not support the Wireless Extensions"
        exit
      fi
    else
      exit
    fi
  fi
else
  echo Usage: $0 \<Ethernet-Device\>
  exit
fi

if [ "$START_WLAN" = "yes" ]
then
  # Detect type of Card
  drivername='other' # Has to be set to drivername if detected
  candomaster='no'   # Set it to 'yes' when card is capaple of doing AP-Mode
  candowpa='no'     # Set it to 'yes' if card can do WDS with hostap-wds-tools
  WLAN_NICK=`hostname`
  if [ -n "$WLAN_CHANNEL" ]
  then
    WLAN_STANDARD=`echo $WLAN_CHANNEL | sed 's/[0-9]//g'`      
  fi
  for i in /etc/wlan/detect_*
  do
    if [ "$drivername" = "other" ]
    then
      if [ -f "$i" ]
      then
        . $i
      fi
    fi
  done
  
  # Running Pre-Base-Config Scripts
  if [ -f /etc/wlan/pre_${drivername} ]
  then
    . /etc/wlan/pre_${drivername}
  fi
  if [ -f /etc/wlan/pre_generic ]
  then
    . /etc/wlan/pre_generic
  fi
  
  # If Card cannot do master then default to ad-hoc
  if [ "$candomaster" != "yes" ]
  then
    if [ "$WLAN_MODE" = "master" ]
    then
      WLAN_MODE="ad-hoc"
    fi
  fi
  
  # Set WLAN-Mode
  if [ -n "$WLAN_MODE" ]
  then
    iwconfig $1 mode $WLAN_MODE
  fi

  # Set WLAN-Nick-Name
  if [ -n "$WLAN_NICK" ]
  then
    iwconfig $1 nick $WLAN_NICK
  fi

  # Set WLAN-Transfer-Rate
  if [ -n "$WLAN_RATE" ]
  then
    if [ "$WLAN_RATE" = "auto" ]
    then
      iwconfig $1 rate auto 2>/dev/null
    else
      iwconfig $1 rate ${WLAN_RATE}M 2>/dev/null
    fi
  fi  

  # Set WLAN-ESSID
  if [ -n "$WLAN_ESSID" ]
  then
    iwconfig $1 essid "$WLAN_ESSID"
  fi
  
  # Set Encryption
  case "$WLAN_ENC" in
    WEP)
      iwconfig $1 enc $WLAN_ENC_KEY
      iwconfig $1 enc restricted
      ;;
    WPA-PSK)
      case "$WLAN_MODE" in
        master)
          (
            echo "interface=$device"
            echo "driver=$drivername"
            echo "logger_syslog=-1"
            echo "logger_syslog_level=2"
            echo "logger_stdout=-1"
            echo "logger_stdout_level=2"
            echo "dump_file=/tmp/hostapd.dump"
            echo "ctrl_interface=/var/run/hostapd"
            echo "ctrl_interface_group=0"
            echo
            echo "ssid=$WLAN_ESSID"
            if [ $WLAN_ACL_MAC_N -gt 0 ]
            then
              case $WLAN_ACL_POLICY in
                open)
                  ;;
                allow)
                  echo "macaddr_acl=1"
                  echo "accept_mac_file=/etc/wlan/hostapd-${device}.macs"
                  ;;
                deny)
                  echo "macaddr_acl=0"
                  echo "deny_mac_file=/etc/wlan/hostapd-${device}.macs"
                  ;;
              esac              
            fi
            echo "auth_algs=3"
            echo
            echo "wpa=3"
            echo "wpa_passphrase=$WLAN_ENC_KEY"
            echo "wpa_key_mgmt=WPA-PSK"
            echo "wpa_pairwise=CCMP TKIP"
          ) > /etc/wlan/hostapd-${device}.conf
          if [ $WLAN_ACL_MAC_N -gt 0 ]
          then
            (
              for idx in `seq 1 $WLAN_ACL_MAC_N`
              do
                eval mac='$WLAN_ACL_MAC_'$idx
                echo "$mac"
              done
            ) > /etc/wlan/hostapd-${device}.macs
          fi
          /usr/sbin/hostapd -B /etc/wlan/hostapd-${device}.conf
          ;;
        managed)
          ;;
      esac
      ;;
  esac

  # Set WLAN-Channel
  if [ -n "$WLAN_CHANNEL" ]
  then
    WLAN_CHANNEL=`echo $WLAN_CHANNEL | sed 's/[a-z]//g'`
    if [ $WLAN_CHANNEL != '0' ]
    then
      iwconfig $1 channel $WLAN_CHANNEL
    fi
  fi

  # Set RTS-Feature
  if [ "$WLAN_RTS" = "yes" ]
  then
    iwconfig $1 rts 500
  fi

  # Configure WLAN_AP
  if [ -n "$WLAN_AP" -a $WLAN_MODE = 'managed' -a "$drivername" != 'hostap' ]
  then
    /usr/sbin/iwconfig $device ap $WLAN_AP
  fi
  
  # Running Post-Base-Config Scripts
  if [ -f /etc/wlan/post_${drivername} ]
  then
    . /etc/wlan/post_${drivername}
  fi

  ifconfig $1 up
fi