Restart NEC router when NAT buffer pool is overflow.

router_restart.sh

#!/bin/bash

# Reboot NEC router if NAT errors are saved in router status page.
# - Checks VoIP status.
# - Run as daemon.
# - Encoding have to be Shift-JIS.
#
# @copytright Yuki Matsukura
# @contact https://matsu.teraren.com/blog/
#

USER="admin"
PASSWORD="admin"
HOST="http://192.168.0.1"

echo "Starting."
while :
do

 ERRORCOUNT=`wget -q -O - --user=$USER --password=$PASSWORD $HOST/log_main.html|grep ERROR | wc -l`

 if [ $ERRORCOUNT -lt 10 ]
 then
#    echo `date` "Error not found"
 sleep 5
 continue
 fi

 # check current tel connection
 # 2:unused 0:in use
 CONNECTION=`wget -q -O - --user=$USER --password=$PASSWORD $HOST/info_tel.html | grep '未通話' | wc -l`
 if [ $CONNECTION -eq 0 ]
 then
 echo "Waiting for disconnecting the tel line."
 sleep 1
 continue
 fi

 # Reset log to avoid double count
 echo "Reset log"
 wget -q -O - --user=$USER --password=$PASSWORD --post-data 'No00208010=&No004c0000=&No00F6D011&No00420000=%93o%98%5E' $HOST/log_main.html > /dev/null

 # Reset the router
 echo "Reboot"
 wget -q -O - --user=$USER --password=$PASSWORD --post-data 'No00420011=reboot&No00420000=%93o%98%5E' $HOST/index_menu.html > /dev/null

 # wait for the router is coming up
 sleep 30

done

run.sh

#!/bin/sh
exec 2>&1
exec  sh -c 'exec envuidgid daemon softlimit -o10 ./router_restart.sh'