digest

#!/bin/bash

#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source.  A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#

#
# Copyright 2017 OmniTI Computer Consulting, Inc.  All rights reserved.
#

# Gross hack to create a version of /usr/bin/digest that doesn't need
# to have all of the crypto framework libraries. sha1sum is available,
# and we can use it.  This is needed for bootadm(1M).

# FOR NOW, assume we're only ever going to be invoked by create_ramdisk,
# which uses "digest -a sha1 <one-filename>".

usage() {
    echo "Usage:" > /dev/stderr
    echo "  digest -l | [-v] -a <algorithm> [file...]" > /dev/stderr
    exit 2
}

if [[ $1 != "-a" || $2 != "sha1" ]]; then
    usage
fi

sha1sum $3 | awk '{print $1}'
exit 0