#!/bin/bash
# This file was installed by the sane-backends package.
#
# 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 usb group
# and the first user that logged in.
#
# Ownership is set to $USER.usb, where $USER is the first user that logged
# in (through pam_console). If there is no user logged in, the ownership
# will get set to root.usb. Permissions are set to 0660.
#
# Arguments :
# -----------
# ACTION=[add|remove]
# DEVICE=/proc/bus/usb/BBB/DDD
# TYPE=usb

SCRIPT=/etc/dynamic/scripts/scanner.script

if [ "$TYPE" = "usb" -a -f "${DEVICE}" ]; then
    if [ "$ACTION" = "add" ]; then
	if [ -f /var/run/console.lock ]; then
	    USER=`cat /var/run/console.lock`
	else
	    USER=root
	fi

	# sanity check
	if [ -z $USER ]; then
	    USER=root
	fi

	chown $USER:usb "$DEVICE"
	chmod 0660 "$DEVICE"

	if [ -x $SCRIPT ]; then
	    # don't call it twice
	    [ -x "$REMOVER" ] && exit 0

	    # call dynamic stuff
	    $SCRIPT add "$DEVICE"

	    if [ -n "$REMOVER" ]; then
		cat > $REMOVER <<EOF
#!/bin/sh

$SCRIPT del "${DEVICE}"
EOF
		chmod +x $REMOVER
	     fi
	fi
    fi
fi