#!/bin/bash

export LC_ALL=C

source /etc/conf.d/usbipdevd

# some sane defaults
[[ -z ${USBIP_POLLING_TIME} ]] && USBIP_POLLING_TIME="10"

# version 0.1.7, no parseable list cmd
if [[ -x /usr/bin/bind_driver ]]
then
	BINDCMD="/usr/bin/bind_driver "
else
	BINDCMD="/usr/sbin/usbip_bind_driver"
fi

while true
do
	# version 0.1.7, no parseable list cmd
	if [[ ${BINDCMD} = /usr/bin/bind_driver ]]
	then
		BUSID=$(${BINDCMD} --list | grep -i "${USBIP_DEVICE_ID}" | sed 's:.*busid\ \([0-9].*\)\ (.*:\1:') # sanitizing syntax-highlighting )
		BUSBINDING=$(${BINDCMD} --list | grep -A1 "${USBIP_DEVICE_ID}" | grep -- '->' | sed 's:.*->\ \(.*\):\1:')
	else
		BUSID=$(${BINDCMD} --list | grep "${USBIP_DEVICE_ID}"  | cut -d'#' -f1 | sed 's:.*=\(.*\):\1:')
		BUSBINDING=$(${BINDCMD} --list | grep "${USBIP_DEVICE_ID}" | cut -d'#' -f3 | sed 's:.*=\(.*\):\1:')
	fi

	if [[ -n ${BUSID} ]]
	then
		# abort here if the busid is the same, because the client connection is lost on new exports
		case ${BUSBINDING} in
			usbip) echo "USBID is the same; nothing changed" ;;
			none)
				echo "Exporting USB Device with ID ${BUSID}"
				${BINDCMD} --usbip ${BUSID}
				;;
			*) echo "Warning: unkown BUSBINDING '${BUSBINDING}' of BUSID '${BUSID}'" ;;
		esac
	else
		echo "USB Device '${USBIP_DEVICE_ID}' not found ..."
	fi

	sleep ${USBIP_POLLING_TIME}
done