#!/bin/sh
#by cuma

[ ! -r /var/mod/etc/conf/ppp.cfg ] && exit 1
. /var/mod/etc/conf/ppp.cfg

[ -z "$PPP_DIAGTTY" ] && exit 1

logger () {
	kill $(cat /var/run/ppp_loggerCAT.pid 2>/dev/null) 2>/dev/null
	if [ /dev -ot "$PPP_DIAGTTY" ]; then
		nohup cat $PPP_DIAGTTY >/tmp/ppp_logger.tmp &
		echo $! >/var/run/ppp_loggerCAT.pid
		sleep 1; echo -en "AT+CPIN?\r"  >$PPP_DIAGTTY
		sleep 1; echo -en "AT+CSQ\r"    >$PPP_DIAGTTY
		sleep 1; echo -en "at+COPS?\r"  >$PPP_DIAGTTY
		sleep 1; echo -en "at+COPS=?\r" >$PPP_DIAGTTY
	fi
}

logger
while [ 1 ]; do
	sleep 20
	[ $(ls -l /tmp/ppp_logger.tmp | awk '{print $5}') -gt 131072 2>/dev/null ] && logger
	kill -0 $(cat /var/run/ppp_loggerCAT.pid 2>/dev/null) 2>/dev/null || logger
done