#!/bin/bash

logger "(gprs-modem-symlink-handler) - Starting GPRS Modem Symlink Handler"
logger "(gprs-modem-symlink-handler) - $# arguments given, 3 needed"

#/devices/platform/sw-ehci.1/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB2/tty/ttyUSB2
if [ $# -ne 3 ]; then
	logger "(gprs-modem-symlink-handler) - Wrong Argument Number! Usage: gprs-modem-symlink-handler add|remove /sys/device/tree/path /kernel/name"
	exit 1
fi

device_address=$(echo $2 | cut --delimiter='/' -f 9)
logger "(gprs-modem-symlink-handler) - $device_address"

sub_address=$(echo $device_address | cut --delimiter=':' -f 2 | cut --delimiter='.' -f 2)
logger "(gprs-modem-symlink-handler) - $sub_address"

case $1 in

	add)
		logger "(gprs-modem-symlink-handler) - Creating Symlink /dev/ttyTRXGPRSMODEM$sub_address for /dev/$3"
		ln -s /dev/$3 /dev/ttyTRXGPRSMODEM$sub_address
		;;

	remove)
		logger "(gprs-modem-symlink-handler) - Removing Symlink /dev/ttyTRXGPRSMODEM$sub_address for /dev/$3"
		rm -f /dev/ttyTRXGPRSMODEM$sub_address
		;;

	*)
		logger "(gprs-modem-symlink-handler) - Unrecognized Action! Usage: gprs-modem-symlink-handler add|remove /sys/device/tree/path /kernel/name"
		exit 1
	;;
esac


exit 0