mescc-tools/sha256.sh

#! /bin/sh
# Copyright (C) 2019 ng0 <ng0@n0.is>
# Copyright (C) 2019 Jeremiah Orians
#
# This file is part of mescc-tools
#
# mescc-tools is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# mescc-tools is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with mescc-tools.  If not, see <http://www.gnu.org/licenses/>.

set -ex
# It's bad to rely on the uname here, but it's a start.
# What this does is to consider the major implementations of
# sha256sum tools and their differences and call them
# accordingly.
sha256_check()
{
	if [ "$(./bin/get_machine --OS)" = "Linux" ]; then
		LANG=C sha256sum -c "$1"
	elif [ "$(./bin/get_machine --OS)" = "NetBSD" ]; then
		sum -a SHA256 -n -c "$1"
	elif [ "$(./bin/get_machine --OS)" = "FreeBSD" ]; then
		sha256 -r -c "$1"
	else
		echo "Unsupported sha256 tool, please send a patch to support it"
		exit 77
	fi
}