#!/bin/bash

if [[ $# < 3 ]]; then 
  echo "Example: $0 smtp.163.com 1 5"
  exit
fi 

host=$1
duration=$2
count=$3

con_fails=0
fail=0
total=0

smtpserver=smtp.163.com
smtpport=25
user=13436881186@163.com
password=mlspoghvmazimtsh
fromemail=13436881186@163.com
toemail=33493248@qq.com

while true; do
  echo -e "\r                                                                                                                       \c"
  echo -e "\rTotal Fails:\033[36m $fail \033[0m Total Pings:\033[36m $total \033[0m Contineous Fails:\033[36m $con_fails \033[0m\c"

  ((total++))

  ping -c 1 $host 2> /dev/null | grep "64 bytes from" > /dev/null

  if [[ $? = "1" ]]; then
    ((con_fails++))
    ((fail++))

    if [[ $con_fails = "$count" ]]; then
      echo -e "\n\nFail to connect to host $host at `date`."
      echo "Sending email to $toemail..."
      python ./sendmail.py -n $smtpserver -p $smtpport --user $user --passwd $password -f $fromemail -t $toemail -s "不能连接主机$host at `date`" -c "链接主机失败：$host at `date`" 
      exit
    fi
  else
    con_fails=0
  fi 

  sleep ${duration}s    
done