#!/bin/sh

echo

host="cheltenham"
logdir="/var/log/"
routerlog1=$logdir"router"    # Master - pruned daily by logrotate
routerlog=$logdir"routertmp"  # Copy erased at end of this script
cp --force $routerlog1 $routerlog

let parms=$#

if [ $parms -gt 0 ]
then
  day=$(date +"%e")
  let minutelast=$(date +"%M")
  let hourlast=$(date +"%H")
  let minutespan=$1

  if [ $minutelast -gt $minutespan ]
  then
    let minutefirst=$minutelast-$minutespan
    let hourfirst=$hourlast
  else
    let minutefirst=$minutelast+60-$minutespan
    let hourfirst=$hourlast-1
    if [ $hourfirst -lt 0 ]
      then
      hourfirst=23
    fi
  fi  

  echo "Checking $minutespan minutes before $hourlast:$minutelast..."
  echo

  let total=0
#echo temp entering while loop
#echo "Day:" $day "First hour:" $hourfirst "Last hour" $hourlast 
#echo "First min:" $minutefirst "Last min:" $minutelast "Min span:" $minutespan   
while [ $minutefirst -ne $minutelast ]
  do
    if [ $minutefirst -lt 10 ]
    then
      minutechar="0$minutefirst"
    else
      minutechar=$minutefirst
    fi

    if [ $hourfirst -eq 24 ]
    then
      let hourfirst=0
    fi
   
    if [ $hourfirst -lt 10 ]
    then
      hourchar="0$hourfirst"
    else
      hourchar=$hourfirst
    fi
   
#    echo 
#    echo "$day $hourchar:$minutechar"
#    echo
    let subtotal=$(grep -c "$day $hourchar:$minutechar" $routerlog)
    let total=$total+$subtotal
    let minutefirst=$minutefirst+1     

    if [ $minutefirst -eq 60 ]
    then
      let minutefirst=0
    fi 
  done
#echo temp exiting while loop 
#echo "First min: $minutefirst Subtotal: $subtotal Total: $total"

  let average=$total/$minutespan
  echo $total "transactions in $minutespan minutes"
  echo "An average of $average transactions per minute"

#  echo
#  pingstring=$(ping -c 3 gateway | grep "round-trip")
#  echo "Current ping $pingstring to gateway"
#  echo

else

#  Bytes since network restart
#ifconfig eth0 | grep bytes 
rxstring=$(ifconfig eth0 | grep bytes | cut --delim="T" --fields=1)
txstring=$(ifconfig eth0 | grep bytes | cut --delim=")" --fields=2)
rxbytes=$(echo $rxstring | cut --delim=":" --fields=2 --delim=":" \
  | cut --delim=" " --fields=1)
txbytes=$(echo $txstring | cut --delim=":" --fields=2 --delim=":" \
  | cut --delim=" " --fields=1)
echo $rxbytes "bytes received," $txbytes "bytes sent since networking restart"
let bytes=$rxbytes+$txbytes
#echo $bytes "bytes since networking restart"

totalout=$(grep -c "@out" $routerlog)
totalin=$(grep -c "@in" $routerlog)
echo $totalout "outbound requests today," $totalin "inbound requests today"

#  Count outbound tx during each hour

echo
echo "Start... Total Outbound and Inbound Today"

declare -i minutecount hourcount

for hour in \
 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 
do
  let hourcount=$(grep "$hour:[0-9]\{2\}:[0-9]\{2\} $host" \
  $routerlog | grep -c "@out")
  #grep "$hour:[0-9]\{2\}:[0-9]\{2\} $host" $routerlog
  incount=$(grep "$hour:[0-9]\{2\}:[0-9]\{2\} $host" \
  $routerlog | grep -c "@in")
  let minutecount=$hourcount/60
  echo $hour":00..." "out:" $hourcount "in:" $incount \
    "out/min:" $minutecount
done

totalout=$(grep -c "@out" $routerlog)
echo "Totals.." $totalout $totalin

#  Count tx by IP address

echo
echo "IP Address    (Host Name)  Total Outbound Today"

let octet=1
while [ $octet -lt 256 ]
do
  ip="192.168.168."$octet
  # Look for an IP followed by a space followed by a digit
  ipcount=$(grep "$ip [0-9]" $routerlog | grep -c "@out")
  if [ $ipcount -ne 0 ]  # Show only active addresses
  then
    hostname=$(gethost $ip name)
    echo $ip" ("$hostname")" $ipcount
  fi
  let octet+=1  # Increment
done

echo
echo "Total all IP's...." $totalout
echo
date
echo

fi

# Clean up temp file
rm --force $routerlog