#!/bin/bash

while : ; do
setterm -inversescreen off
#0. fetch data:
  #1. lsusb
    dispchar a
    usb=$(lsusb)
  #2. ps
    dispchar b
    proc=$(ps ax)

#1. check hardware
  #1.1 check umts modem
  echo -n "UMTS: "
    dispchar c
    if [[ $(echo "$usb" | grep "12d1:1506") ]] ; then
      echo -n "OK"
    else
      echo "Not Found"
      setterm -inversescreen
      echo -e "\n\n*** Replug Modem ***\n\n"
disp "UMTS Fatal Error" #Modem Error: fatal!
      sleep 5 #read -p "press enter" #while : ; do; done #halt exec
    fi
    if [[ $(echo "$usb" | grep "12d1:14fe") ]] ; then
      echo -n "wrong mode"
      usb_modeswitch -v 12d1 -p 14fe -V 12d1 -P 1506 -M 
'55534243123456780000000000000011062000000100000000000000000000'
disp "UMTS Modeswitch" #Modem Warning: mode
      continue
    fi
  #1.2 check wlan stick
  echo -ne "\nWLAN: "
    dispchar d
    if [[ $(echo "$usb" | grep "0cf3:9271") ]] ; then
      echo -n "OK"
    else
      echo "error"
      setterm -inversescreen
      echo -e "\n\n*** Replug WiFi ***\n\n"
disp "WiFi Fatal Error" #WiFi Error: fatal!
      sleep 5 #read -p "press enter" #while : ; do; done #halt exec
    fi
#2. check services
  #2.1 check hostapd
  echo -ne "\nhostapd: "
    dispchar e
    if [[ $(echo "$proc" | grep "hostapd" | grep -v "grep") ]] ; then
      echo -n "OK"
    else
      echo -n "restarting"
      #hostpad /etc/hostapd.conf &
      service hostapd restart
disp "hostapd restart" #Service warning: hostapd
      continue
    fi
  #2.2 check dnsmasq
  echo -ne "\ndnsmasq: "
    dispchar f
    if [[ $(echo "$proc" | grep "dnsmasq" | grep -v "grep") ]] ; then
      echo -n "OK"
    else
      echo -n "restarting"
      service dnsmasq restart
disp "dnsmasq restart" #Service warning: dnsmasq
      continue
    fi
  #2.3 check wvdial
  echo -ne "\nwvdial: "
    dispchar g
    if [[ $(echo "$proc" | grep "wvdial" | grep -v "grep") ]] ; then
      echo -n "OK"
    else
      echo -n "restarting"
      killall dial
      killall wvdial
      #killall modem-manager
      dial & #wvdial &
disp "wvdial restart" #Service warning: wvdial
      continue
    fi
#3. check conncection
  #3.1 check ping
  echo -ne "\nPING: "
    dispchar h
    if [[ $(ping google.com -c 4 -i 0.2) ]] ; then
      echo -n "OK"
      #3.1-2 check http
      echo -ne "\nWGET: "
      dispchar i
        wget -q --tries=3 --timeout=5 http://google.com/generate_204 -O - &>/dev/null
        if [[ $? -eq 0 ]] ; then
          echo -n "OK"
        #4 OK, get client list
          clients=$(iw dev wlan0 station dump|grep Station|wc -l)
          echo "\nClients: $clients"
disp "Luftinternet $clients"
#disp "Luftinternet  :)"
#disp "Luftinternet $(iw dev wlan0 station dump|grep Station|wc -l)"
        else
          echo "Unknown Error"
disp "wget error unknw" #Unknown Error: wget!
        fi
    else
      echo "ping error"
disp "ping error unknw" #ping error
      fi

echo -ne "\n\n"

#break
dispchar +
dispprogress #sleep 10 #dispprogress is a python script that displays a cursor and waits approx 8sec
done