#!/bin/bash
sleep 5
if [ "$1" != "megafon" ] && [ "$1" != "mts" ] && [ "$1" != "beeline" ] && [ "$1" != "irancell" ]; then
    echo "Usage: $0 megafon|mts|beeline|irancell"
    exit 1
fi
killall pppd > /dev/null
PROV=$1
GPRS="ttyACM0"
SPEED="115200"
DGW=`route -n | grep UG | head -n 1 | awk '{ print $2 }' | sed -r "s/([0-9]*)\.([0-9]*)\.([0-9]*).*/\1\.\2\.\3\.1/"`
IP_UP="#!/bin/bash\nGW=\`echo \$5 | sed -r \"s/([0-9]*)\.([0-9]*)\.([0-9]*).*/\x5C\x31\.\x5C\x32\.\x5C\x33\.1/\"\`\n/sbin/route add default gw \$GW"
IP_DOWN="#!/bin/bash\n/sbin/route add default gw $DGW"
echo -e $IP_UP > /etc/ppp/ip-up
chmod 0700 /etc/ppp/ip-up
echo -e $IP_DOWN > /etc/ppp/ip-down
chmod 0700 /etc/ppp/ip-down
OPTIONS="/dev/$GPRS
connect '/usr/sbin/chat -v -f /etc/ppp/chat/chat-gprs'
local
$SPEED
unit 0
defaultroute
noipdefault
ipcp-accept-local
ipcp-accept-remote
lcp-echo-interval 60
lcp-echo-failure 5
passive
modem
mru 1500
"
if [ "$PROV" == "megafon" ]; then
    USER="gdata"
    GATE="internet"
    TAIL=""
fi
if [ "$PROV" == "mts" ]; then
    USER="mts"
    GATE="internet.mts.ru"
    TAIL="CONNECT"
fi
if [ "$PROV" == "beeline" ]; then
    USER="beeline"
    GATE="internet.beeline.ru"
    TAIL="CONNECT"
fi
if [ "$PROV" == "irancell" ]; then
    USER="irancell"
    GATE="mtn.irancell"
    TAIL="CONNECT"
fi
PAPCHAP="gdata\t\t*\t\tgdata\nmts\t\t*\t\tmts\nbeeline\t\t*\t\tbeeline"
PEERS="/dev/$GPRS
user $USER
$SPEED
defaultroute
usepeerdns
nodetach
persist
noipdefault
lock
connect '/usr/sbin/chat -v -f /etc/ppp/chat/chat-gprs'
novjccomp
nopcomp
noaccomp
noipdefault
nodeflate
novj
nobsdcomp
debug
"
CHAT_GPRS="
TIMEOUT         10
ECHO            ON
ABORT           '\nBUSY\r'
ABORT           '\nERROR\r'
ABORT           '\nNO ANSWER\r'
ABORT           '\nNO DIALTONE\r'
ABORT           '\nRINGING\r\n\r\nRINGING\r'
\"\"            '\rAT'
TIMEOUT         20
OK              'ATE1S7=45'
OK              'AT+CGDCONT=1,\"IP\",\"$GATE\"'
OK		'ATD*99***1#'
TIMEOUT		60
ABORT		'\nERROR\r'
$TAIL
"
if [ "`ps -eo pid,comm | grep ppp`" != "" ]; then
    killall pppd > /dev/null 2>&1
    exit
fi
LOCK=`ls /var/lock | grep ACM `
if [ "$LOCK" != "" ]; then
    rm -f /var/lock/$LOCK > /dev/null 2>&1
fi
MODULES=( $(ls /lib/modules/`uname -r`/kernel/drivers/net | grep "ppp"))
if [ ${#MODULES[@]} -gt 0 ];then
    for MODULE in `seq 0 ${#MODULES[@]}` ; do
        if [ "${MODULES[$MODULE]}" != "" ]; then
            PPP=`echo ${MODULES[$MODULE]} | sed -r "s/\.ko//"`
            modprobe $PPP >/dev/null 2>&1
            if [ $? == 0 ]; then
                RESULT="Ok"
            else
                RESULT="Failed"
            fi
            echo "Probing $PPP $RESULT"
        fi
    done
fi
if [ -e /etc/ppp/gprs ]; then
    rm -f /etc/ppp/gprs
fi
echo -e $PAPCHAP > /etc/ppp/pap-secrets
if [ $? != 0 ]; then
    echo Error 1
    exit
fi
chmod 0600 /etc/ppp/pap-secrets
echo -e $PAPCHAP > /etc/ppp/chap-secrets
if [ $? != 0 ]; then
    echo Error 2
    exit
fi
chmod 0600 /etc/ppp/chap-secrets
echo $OPTIONS > /etc/ppp/options
if [ $? != 0 ]; then
    echo Error 3
    exit
fi
echo $CHAT_GPRS > /etc/ppp/chat/chat-gprs
if [ $? != 0 ]; then
    echo Error 4
    exit
fi
chmod 0666 /etc/ppp/options
if [ -e /etc/ppp/peers/gprs ]; then
    rm -f /etc/ppp/peers/gprs
fi
echo $PEERS > /etc/ppp/peers/gprs
if [ $? != 0 ]; then
    echo Error 5
    exit
fi
chmod 0666 /etc/ppp/peers/gprs
if [ "`ls /dev | grep $GPRS`" != "" ]; then
    echo "Device /dev/$GPRS present"
else
    if [ ! -e /dev/$GPRS ]; then
	mknod /dev/$GPRS c 166 0
	if [ $? != 0 ]; then
	    echo Error 6
	    exit
	fi
    fi
    if [ ! -e /dev/usb ]; then
	mkdir /dev/usb
	if [ $? != 0 ]; then
	    echo Error 7
	    exit
	fi
	chmod 0666 /dev/usb
    fi
    ln -s /dev/$GPRS /dev/usb/$GPRS
    if [ $? != 0 ]; then
	echo Error 8
	exit
    fi
fi
chmod 0666 /dev/$GPRS
echo "Calling to $PROV..."
if [ "$DGW" != "" ]; then
    route del default gw $DGW
fi
pppd call gprs