#!/bin/sh

# This file is part of sane-backends.
#
# This script changes the permissions and ownership of a USB device under
# /proc/bus/usb to grant access to this device to users in the scanner group.
#
# Ownership is set to root:scanner, permissions are set to 0660.
#
# Arguments :
# -----------
# ACTION=[add|remove]
# DEVICE=/proc/bus/usb/BBB/DDD
# TYPE=usb


if [ -z "${DEVICE}" ] ; then
        IF=$(echo ${DEVPATH} | sed 's:\(bus/usb/devices/\)\(.*\)-\(.*\):\2:')
        DEV=$(cat /sys/${DEVPATH}/devnum)
        DEVICE=$(printf '/proc/bus/usb/%.03d/%.03d' ${IF} ${DEV})
fi

if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
  chown root:scanner "$DEVICE"
  chmod 0660 "$DEVICE"
fi


# That's an insecure but simple alternative
# Everyone has access to the scanner

# if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
#  chmod 0666 "$DEVICE"
# fi