#!/bin/bash
# author       : Petr Simandl www.simandl.cz
# release date : 29/12/2002 
# name         : wifimon
# version      : 0.1 initial
# description  : hostap powered wifi card monitoring
# license      : GPL

wl_iwccmd="/usr/local/sbin/iwconfig"
wl_hostap="/proc/net/hostap/"
wl_wireless="/proc/net/wireless"

wlm_no_managed_or_master=" neni ani Master ani Managed..."
wlm_number_of_clients="Pocet asociovanych klientu : " 
#wlm_no_managed_or_master=" is not Master or Managed..."
#wlm_number_of_clients="Number of associated clients : " 
######################################################################
w_bar()
{
  until [ "$wl_cnt" -eq -1 ]
  do
    printf "="
    wl_cnt=$(($wl_cnt - 1 ))
  done  
  printf "        \n"
} # w_bar

######################################################################
w_managed()
{ echo $wl_iwctxt | awk '{print $1,$3,$4,$5"  "}' 
  echo $wl_iwctxt | awk '{print $6,$9,$11"  "}' 
  #echo $wl_iwctxt | awk '{print $27,$28,$29,$31,$32"  "}' 
  #cat $wl_wireless | grep $wl_iface
  wl_wtxt=`cat $wl_wireless | grep $wl_iface | awk '{print $3,$4,$5}' | sed 's/\.//g'`
  wl_quality=`echo $wl_wtxt | awk '{print $1}'`
  wl_signal=`echo $wl_wtxt | awk '{print $2}'`
  wl_signal=$(($wl_signal - 256))
  wl_noise=`echo $wl_wtxt | awk '{print $3}'`
  wl_noise=$(($wl_noise - 256))
  echo Quality:$wl_quality/92 Signal level:$wl_signal Noise level:$wl_noise
  wl_cnt=$wl_quality
  w_bar
  #wl_cnt=$(($wl_cnt + 100))
  #w_bar
  echo
} # w_managed

######################################################################
w_master()
{ echo $wl_iwctxt | awk '{print $1,$3,$4,$5"  "}' 
  echo $wl_iwctxt | awk '{print $6,$9,$11"  "}' 

  wl_numcl=`ls $wl_hostap$wl_iface | grep -c 00`
  echo $wlm_number_of_clients $wl_numcl
  for wl_mac in `ls $wl_hostap$wl_iface | grep 00`
  do
    wl_macparam=`cat $wl_hostap$wl_iface/$wl_mac | grep -E 'last_rx|last_tx'`
    wl_cnt=`echo $wl_macparam | awk '{print $5}' | sed 's/signal=//g'`
    echo $wl_mac Signal $wl_cnt $wl_macparam | awk '{print $1,$2,$3,$4,$5"  "}' 
    w_bar
  done  

  echo
} # w_master

######################################################################
w_iface()
{ wl_iwctxt=`$wl_iwccmd $wl_iface | grep -v 'Device|Some|Extension' | sed 's/  Nick/_Nick/g'`
  wl_mode=`echo $wl_iwctxt | awk '{print $5}' | sed 's/Mode://g'`
  if [ "a$wl_mode" = "aManaged" ]
  then
    w_managed
  elif [ "a$wl_mode" = "aMaster" ]
  then
    w_master
  else
    echo $wl_iface $wlm_no_managed_or_master
    echo
  fi  
}

######################################################################
######################################################################

clear

while [ 1 ]
do
  tput cup 0 0
  for wl_iface in `ls $wl_hostap`
  do 
    w_iface
  done
#  tput cup 25 0
  sleep 1
done

exit 0