#!/bin/bash
# Huawaei E220 helper script
# wvdial config:
# --------------
#[Dialer Defaults]
#Phone = *99***1#
#Username = ppp@A1plus.at
#Password = ppp
#New PPPD = yesA
#Stupid Mode = 1
#Dial Command = ATDT
#
#[Dialer hsdpa]
#Modem = /dev/ttyUSB0
#Baud = 460800
#Init2 = ATZ
#Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 + FCLASS=0
#ISDN = 0
#Modem Type = Analog Modem

pin=<Your Pin Code goes here>
modem=/dev/ttyUSB0

resetUsbStorage()
{
	echo "removing usb-storage module..."
	sudo rmmod usb-storage
	echo "removing usb-serial..."
	sudo rmmod usbserial
	sleep 5
	echo "inserting usbserial for huawei card..."
	sudo modprobe usbserial vendor=0x12d1 product=0x1003
	ret=$?
	if [ $ret -eq 0 ]
	then
	  echo "usbserial for huawei card inserted successfully..."
	else
	  echo "error inserting usbserial for huawei card code: $ret..."
	  return $ret
	fi
	echo "REMOVE the modem device NOW!!!"
	sleep 20
	echo "INSERT the modem device NOW!!!"
	sleep 5
	
	test=`ls -la /dev/ttyU* | wc -l | tr -d " "`
	if [ $test -ge 2 ]
	then
		echo "usb modem is now inserted correct into your system..."
		return 0
	else	
		echo "insert of usb modem failed..."
		return 1
	fi
}

setPin()
{
	echo "setting pin for modem..."
	retVal=`sudo ./setpin.pl $modem $pin`
	echo $retVal | grep "accepted"
	ret=$?
	if [ $ret -eq 0 ]
	then
		echo "PIN was set successfully..."
	else
		echo "setting of pin code failed, exiting..."
		exit 1
	fi
}

startKppp()
{
	echo "starting kppp..."
	sudo kppp &
}

usbCtr=`ls -la /dev/ttyU* | wc -l | tr -d " "`
if [ $usbCtr -ge 2 ]
then
	echo "usb modem seems to be inserted correct..."
	setPin
	startKppp
else
	echo "usb modem does not seem to be inserted correct..."
	resetUsbStorage
	ret=$?
	if [ $ret -eq 0 ]
	then
		setPin
		startKppp
	else
		echo "exiting after 1 retry..."
		exit $ret
	fi
fi