83 lines
1.6 KiB
Bash
Executable File
83 lines
1.6 KiB
Bash
Executable File
#!/bin/sh -e
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if [ ! -f "$__object/parameter/sum" ]
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then
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exit 0
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fi
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if [ -f "$__object/parameter/cmd-sum" ]
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then
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cat "$__object/parameter/cmd-sum"
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exit 0
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fi
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sum_should="$( cat "$__object/parameter/sum" )"
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if echo "$sum_should" | grep -Fq ':'
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then
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sum_hash="$( echo "$sum_should" | cut -d : -f 1 )"
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else
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if echo "$sum_should" | grep -Eq '^[0-9]+\s[0-9]+$'
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then
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sum_hash='cksum'
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elif
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echo "$sum_should" | grep -Eiq '^[a-f0-9]{32}$'
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then
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sum_hash='md5'
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elif
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echo "$sum_should" | grep -Eiq '^[a-f0-9]{40}$'
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then
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sum_hash='sha1'
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elif
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echo "$sum_should" | grep -Eiq '^[a-f0-9]{64}$'
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then
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sum_hash='sha256'
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else
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echo 'hash format detection failed' >&2
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exit 1
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fi
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fi
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os="$( "$__explorer/os" )"
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case "$sum_hash" in
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cksum)
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echo "cksum %s | awk '{print \$1\" \"\$2}'"
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;;
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md5)
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case "$os" in
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freebsd)
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echo "md5 -q %s"
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;;
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*)
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echo "md5sum %s | awk '{print \$1}'"
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;;
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esac
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;;
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sha1)
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case "$os" in
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freebsd)
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echo "sha1 -q %s"
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;;
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*)
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echo "sha1sum %s | awk '{print \$1}'"
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;;
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esac
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;;
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sha256)
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case "$os" in
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freebsd)
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echo "sha256 -q %s"
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;;
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*)
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echo "sha256sum %s | awk '{print \$1}'"
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;;
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esac
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;;
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*)
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# we arrive here only if --sum is given with unknown format prefix
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echo "unknown hash format: $sum_hash" >&2
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exit 1
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;;
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esac
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