#!/bin/bash

# Company:      PowerCraft Technology
# Author:       Copyright Jelle de Jong <jelledejong@powercraft.nl>
# Note:         Please send me an email if you enhanced the script
# Version:      0.0.1
# Date:         2008-03-31
# System:       Ubuntu/Debian GNU/Linux
# Description:  Detect HSDPA USB Huawei E220 Modem before connecting

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more de/usr/bin/tails.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.

#~ check=$(lsmod | grep option)
#~ [ -n "$check" ] && sudo rmmod option

#~ check=$(lsmod | grep usbserial)
#~ [ -n "$check" ] && sudo rmmod usbserial
#~
#~ sudo modprobe usbserial vendor=0x12d1 product=0x1003

unset ready
maximum=15
count=0
while [ -z "$ready" ] && [ "$count" -lt "$maximum" ]
do
    count=$(($count+1))

    cd /dev/
    for interface in ttyUSB*
    do
        if [ "$interface" = "ttyUSB0" ]
        then
            ready="true"
        fi
    done

    if [ -z "$ready" ]
    then
        /bin/sleep 1 && /bin/echo -ne "...device not detected, trial: $count/$maximum \r"
    fi
done

if [ -n "$ready" ]
then
    echo "device detected, continuing now..."
    exit 0
else
    fallback="true"
    if [ -n "$fallback" ]
    then
        echo "device detection failed, reverting to backup"
        /usr/bin/pct-hsdpa-3g-huawei-e220-vodafone-disable
    else
        echo "device detection failed, shutdown now"
        exit 1
    fi
fi

exit