#!/bin/sh
#
# Copyright (c) 2013 Nagios Plugins Development Team
#
# Originally written by Holger Weiss <holger@zedat.fu-berlin.de>.
#
# This file is free software; the Nagios Plugins Development Team gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY, to the extent permitted by law; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

set -u

export PATH='/usr/local/bin:/usr/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin'

myself=${0##*/}

create_checksum()
{
	tarball=$1

	shasum -a 1 -b "$tarball" >"$tarball.sha1"
	touch --date="$(stat --format='%y' "$tarball")" "$tarball.sha1"
}

if [ $# -eq 1 ] && [ "x$1" = 'x-h' -o "x$1" = 'x--help' ]
then
	echo "Usage: $myself tarball ..."
	exit 0
fi

for tarball in "$@"
do
	create_checksum "$tarball"
done