90 lines
2.9 KiB
Bash
90 lines
2.9 KiB
Bash
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#!/usr/bin/env sh
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############################################################################
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# apps/tools/check-hash.sh
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#
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# Copyright (C) 2019 Michał Łyszczek. All rights reserved.
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# Author: Michał Łyszczek <michal.lyszczek@bofc.pl>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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usage="Usage: $0 <hash-algo> <expected-hash> <file-to-check>"
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if [ ${#} -ne 3 ]
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then
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echo "ERROR: invalid number of arguments passed"
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echo ""
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echo ${usage}
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exit 1
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fi
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hash_algo=${1}
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exp_hash=${2}
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file_to_check=${3}
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if [ ! -f "${file_to_check}" ]; then
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echo "ERROR: file '${file_to_check}' does not exist"
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echo ""
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echo ${usage}
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exit 1
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fi
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case "${hash_algo}" in
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sha1|sha224|sha256|sha384|sha512)
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# valid hash passed, continue
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;;
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*)
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echo "ERROR: invalid hash '${hash_algo}' for file '${file_to_check}'"
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echo "supported hashes are:"
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echo " sha1, sha224, sha256, sha384, sha512"
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echo ""
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echo ${usage}
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exit 1
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esac
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# Calculate hash value of passed file
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calc_hash=$( ${hash_algo}sum "${file_to_check}" | cut -d' ' -f1 )
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# Does it match expected hash?
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if [ "${exp_hash}" == "${calc_hash}" ]; then
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# yes, they match, we're good
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exit 0
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fi
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# No, hashes don't match, print error message and remove corrupted file
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echo "ERROR: file ${file_to_check} has invalid hash"
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echo "got: ${calc_hash}"
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echo "expected: ${exp_hash}"
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rm "${file_to_check}"
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exit 1
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