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Add checksum validation to install.sh #3193

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36c3396
Add checksum validation to install.sh
markusa380 Mar 25, 2026
3ae8b8d
Merge branch 'master' into ft/install-checksum-validation
markusa380 Mar 27, 2026
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39 changes: 36 additions & 3 deletions www/install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ OPTIONS:
--tag TAG Tag (version) of the crate to install, defaults to latest release
--to LOCATION Where to install the binary [default: ~/bin]
--target TARGET
--sha256 SHA256 SHA256 checksum to verify the downloaded archive
EOF
}

Expand Down Expand Up @@ -85,6 +86,10 @@ while test $# -gt 0; do
dest=$2
shift
;;
--sha256)
sha256=$2
shift
;;
*)
say "error: unrecognized argument '$1'. Usage:"
help
Expand Down Expand Up @@ -162,13 +167,41 @@ say "Archive: $archive"

td=$(mktemp -d || mktemp -d -t tmp)

if [ "$extension" = "zip" ]; then
download "$archive" "$td/just.zip"
unzip -d "$td" "$td/just.zip"
if [ -n "${sha256-}" ]; then
if command -v sha256sum > /dev/null; then
sha256cmd="sha256sum"
elif command -v shasum > /dev/null; then
sha256cmd="shasum -a 256"
else
err "need sha256sum or shasum to verify checksum (command not found)"
fi
fi

archive_path="$td/$crate-$tag-$target.$extension"

if [ "$extension" = "zip" ] || [ -n "${sha256-}" ]; then
download "$archive" "$archive_path"
else
download "$archive" - | tar -C "$td" -xz
fi

if [ -n "${sha256-}" ]; then
actual_sha256=$($sha256cmd < "$archive_path" | cut -d' ' -f1)
if [ "$actual_sha256" != "$sha256" ]; then
err "SHA256 mismatch: expected $sha256, got $actual_sha256"
else
say "Checksum verified."
fi
fi

if [ -e "$archive_path" ]; then
if [ "$extension" = "zip" ]; then
unzip -d "$td" "$archive_path"
else
tar -C "$td" -xzf "$archive_path"
fi
fi

if [ -e "$dest/just" ] && [ "$force" = false ]; then
err "\`$dest/just\` already exists"
else
Expand Down