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zulip/scripts/setup/sha256-tarball-to
2025-03-27 21:56:54 -07:00

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#!/usr/bin/env bash
if [ "$#" -lt 4 ]; then
echo "Usage:"
echo " sha256-tarball-to SHA256 http://FETCH/FROM.tar.gz SRC1 DST1 [SRC2 DST2 [...]]"
echo
echo "SHA256 is the sha256sum of the tarball fetched; each SRC (which may be a"
echo "directory) is expected to be a relative path into the unpacked tarball,"
echo "and each DST is the absolute path it should be moved to."
exit 1
fi
set -e
set -x
SHA256="$1"
URL="$2"
shift
shift
# Work in a tmpdir which we clean up at the end
tmpdir="$(mktemp -d)"
trap 'rm -r "$tmpdir"' EXIT
cd "$tmpdir"
# We support both .tar.gz and .zip files
if [[ "$URL" == *.tar.gz ]] || [[ "$URL" == *.tgz ]]; then
extension="tar.gz"
elif [[ "$URL" == *.zip ]]; then
extension="zip"
else
echo "Can't determine archive type from URL: $URL"
exit 1
fi
# Fetch to a predictable name, not whatever curl guesses from the URL
LOCALFILE="archive.$extension"
curl -fL --retry 3 -o "$LOCALFILE" "$URL"
# Check the hash against what was passed in
echo "$SHA256 $LOCALFILE" >"$LOCALFILE.sha256"
sha256sum -c "$LOCALFILE.sha256"
if [[ "$extension" == "tar.gz" ]]; then
tar xzf "$LOCALFILE"
else
unzip "$LOCALFILE"
fi
# Take the rest of the arguments two-at-a-time, as source and
# destination to move out of the unpacked tarball.
while [ "$#" -gt 0 ]; do
mv "$1" "$2"
shift
shift
done