#!/bin/bash
#
# $Id: rc.eciadsl,v 1.4.2.14 2005/07/28 16:47:43 gespinasse Exp $
#

eval $(/usr/local/bin/readhash CONFIG_ROOT/ppp/settings)

# Debugging. Comment it out to stop logging
DEBUG="yes"
msg() {
	if [ "z$DEBUG" != "z" ] ; then
		/usr/bin/logger -t red "ECI USB: $*"
	fi
	/bin/echo "$*"
}

# Function to wait for interface to become ready
# Borrowed from eciadsl startmodem script
function wait_for_iface()
{
	msg "Waiting for interface: $1"
	COUNTER=10
	FLREADY=0
	TIMES=1
	while [ $TIMES -le $COUNTER ]; do
		/sbin/ifconfig $1> /dev/null 2>&1
		if [ $? -eq 0 ]; then
			FLREADY=1
			break
		fi
		/bin/sleep 1
		TIMES=$(expr $TIMES + 1)
	done
	if [ "$FLREADY" -eq 0 ]; then
		msg "Interface not found: $1"
		exit 1
	fi
}

# See how we were called.
case "$1" in
  start)
	if [ ! -f "CONFIG_ROOT/eciadsl/synch.bin" ]; then
		msg "Synch.bin not uploaded"
		exit 1
	fi

	if [ ! -f "/proc/bus/usb/devices" ]; then
		msg "No USB enabled"
		exit 1
	fi

	VID1="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 2)"
	PID1="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 3)"
	VID2="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 4)"
	PID2="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 5)"
	CHIP="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 6)"
	ALTS="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 7)"
	ALTP="$(/bin/grep "$MODEM	" "/etc/eciadsl/modems.db" | /usr/bin/tr -s "\t" "|" | /usr/bin/cut -d '|' -f 8)"

	if [ "$CHIP" = '' ]; then
		msg "error in modems.db reading for $MODEM no CHIP found"
		exit 1
	fi

	# Firmware
	if [ "$CHIP" = 'GS7070' ]; then
		if ( /bin/grep -q "^P:  Vendor=$VID1 ProdID=$PID1" /proc/bus/usb/devices ); then
			/bin/rm -f /var/ipfire/red/eciadsl-synch-done
			/bin/sleep 2
			msg "Loading Firmware for $MODEM"
			/usr/sbin/eciadsl-firmware 0x$VID1 0x$PID1 0x$VID2 0x$PID2 /etc/eciadsl/firmware00.bin
			RET=$?
			if [ "$RET" -ne "0" ]; then
				msg "$MODEM failed to load firmware, reason: $RET"
				exit 1
			fi
			/bin/sleep 2
		fi
	fi

	if ( ! /bin/grep -q "^P:  Vendor=$VID2 ProdID=$PID2" /proc/bus/usb/devices ); then
		msg "$MODEM modem not found ready"
		exit 1
	fi

	# Modem synch
	if [ ! -e "CONFIG_ROOT/red/eciadsl-synch-done" ]; then
		/usr/sbin/eciadsl-synch -alt $ALTS -mc $CHIP 0x$VID2 0x$PID2 CONFIG_ROOT/eciadsl/synch.bin
		RET=$?
		if [ "$RET" -ne "0" ]; then
			msg "$MODEM failed to get synchronization, reason:$RET"
			exit 1
		else
			/bin/touch CONFIG_ROOT/red/eciadsl-synch-done
		fi
	fi

	if [ "$PROTOCOL" = "RFC1483" ]; then
		case "$ENCAP" in
		    0) ECIMODE="LLC_SNAP_RFC1483_BRIDGED_ETH_NO_FCS"
			;;
		    1) ECIMODE="VCM_RFC_1483_BRIDGED_ETH"
			;;
		    2) ECIMODE="LLC_RFC1483_ROUTED_IP"
			;;
		    3) ECIMODE="VCM_RFC1483_ROUTED_IP"
			;;
		    *) msg "Unknown encapsulation: $ENCAP"
			exit 1
			;;
		esac

		# Start pppoeci
		if [ "$ENCAP" = "0" -o "$ENCAP" = "1" ]; then
			ECIIF="tap0"
		else
			ECIIF="tun0"
		fi
		/sbin/modprobe tun
		/usr/sbin/eciadsl-pppoeci -alt $ALTP -vpi $VPI -vci $VCI -vendor 0x$VID2 -product 0x$PID2 -mode $ECIMODE
		wait_for_iface $ECIIF
		/sbin/ifconfig $ECIIF up
		exit $?
	fi
	exit 0
	;;
  stop)
	msg "stop"
	# Avoid possibility of multiple 'rc.eciadsl start' as only one prog can claim interface at a time
	# and time for the full eci-load2 loop may be too long for the user to wait until to try once again
	RCECIADSLSTART=`/bin/ps ax | /bin/grep '[r]c.eciadsl start' | /usr/bin/cut -f1 -d ' '`
	[ "$RCECIADSLSTART" != '' ] && /bin/kill "$RCECIADSLSTART"

	# -KILL is necessary because pppoeci ignores sigint
	/bin/killall -KILL eciadsl-pppoeci eciadsl-firmware eciadsl-synch 2> /dev/null
	/bin/sleep 1
	/sbin/modprobe -r tun
	;;
  cleanup)
	msg "driver cleanup and USB Bus reset"
	/usr/local/bin/resetusb
	/bin/rm -f CONFIG_ROOT/red/eciadsl-synch-done
	;;
  *)
	/bin/echo "Usage: $0 {start|stop|cleanup}"
	exit 1
	;;
esac

exit 0