#!/bin/sh
#
# exec from cron by root
#
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
export PATH
#
# 2重起動抑止の為のロック取得
#
mkdir /tmp/dhcpcd_check.sh.LOCK || exit 1
#
basedir=~m-ito/provider/catv
#
device=eth0
server=www.catv.ne.jp
#------------------------------------------------------------------------------------
result=`ping -c 1 ${server} 2>&1 | grep " 0% packet loss"`
#
# インターネット側にPING不通の場合dhcpcdを再起動
#
if [ "X${result}" = "X" ]
then
    echo -n "dhcpcd_check : restart dhcpcd : " >>/tmp/dhcpcd_check.log
    date >>/tmp/dhcpcd_check.log
    kill -TERM `cat /var/run/dhcpcd-${device}.pid`
    sleep 2
#
# option : -R は dhcpcd による /erc/resolv.conf の書き換えを
#          抑止する。自前で BIND を立てる都合上このようにした。
#          -d for debugging into /var/log/dhcpcd.log
#
    /usr/local/sbin/dhcpcd -R ${device} >/dev/null 2>&1
fi
#
result=`ping -c 1 ${server} 2>&1 | grep " 0% packet loss"`
#
# dhcpcdがIP取得失敗した場合、前回の取得情報で強制的にeth0を設定
#
if [ "X${result}" = "X" ]
then
    echo -n "dhcpcd_check : force recover : " >>/tmp/dhcpcd_check.log
    date >>/tmp/dhcpcd_check.log
    sleep 2
    ${basedir}/etc/dhcp_force_recover.sh >/dev/null 2>&1
fi
#
# 2重起動抑止の為のロック開放
#
rmdir /tmp/dhcpcd_check.sh.LOCK