blob: 87ba453b9f573bf34ebc0e48277b17972b388394 (
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#!/bin/sh
#
# SRI Hash Generator
#
# A safer alternative than using external services such as
# https://www.srihash.org
#
# Parameters
BASENAME="`basename $0`"
URI="$1"
# Check
if [ -z "$URI" ]; then
echo "usage: $BASENAME <file-or-url>"
exit 1
fi
# Get file
if echo "$URI" | grep -q '^http'; then
echo "downloading $URI and generating hash..."
HASH="`curl $URI | openssl dgst -sha384 -binary | openssl base64 -A`"
echo ""
else
if [ -e "$URI" ]; then
# See https://www.srihash.org/
HASH="`openssl dgst -sha384 -binary $URI | openssl base64 -A`"
else
echo "file not found: $URI"
exit 1
fi
fi
# Generate
cat <<EOF
<script src="$URI" integrity="sha384-$HASH" crossorigin="anonymous"></script>
EOF
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