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flatcar-update: Work around a bug in bash 4.3 #119

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merged 1 commit into from
Apr 12, 2024
Merged

flatcar-update: Work around a bug in bash 4.3 #119

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12 changes: 12 additions & 0 deletions bin/flatcar-update
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Original file line number Diff line number Diff line change
Expand Up @@ -191,7 +191,10 @@ mkdir -p "/var/tmp/flatcar-update"
if [ "$PAYLOAD" = "" ]; then
echo "Downloading update payloads..."
PAYLOAD="/var/tmp/flatcar-update/flatcar_production_update.gz"
# bash 4.3 compat for VAR[@] if VAR is ()
set +u
for DOWNLOAD_FILE in "$PAYLOAD" "${EXTENSIONS[@]}"; do
set -u
rm -f "${DOWNLOAD_FILE}"
BASEFILENAME="$(basename -- "${DOWNLOAD_FILE}")"
curl -fsSL -o "${DOWNLOAD_FILE}" --retry-delay 1 --retry 60 --retry-connrefused --retry-max-time 60 --connect-timeout 20 "https://update.release.flatcar-linux.net/${BOARD}/${VERSION}/${BASEFILENAME}"
Expand All @@ -204,9 +207,13 @@ if [ "$PAYLOAD" = "" ]; then
echo "Error: mismatch with downloaded SHA256 checksum (${SHA256_TO_CHECK})" > /dev/stderr ; exit 1
fi
done
set -u
echo "When restarting after an error you may reuse them with '--to-payload $PAYLOAD --extension ${EXTENSIONS[*]}' (add --extension before each extension)"
else
# bash 4.3 compat for VAR[@] if VAR is ()
set +u
for DOWNLOAD_FILE in "$PAYLOAD" "${EXTENSIONS[@]}"; do
set -u
BASEFILENAME="$(basename -- "${DOWNLOAD_FILE}" | sed 's/flatcar_test_update-//g')"
if [ "${DOWNLOAD_FILE}" = "${PAYLOAD}" ]; then
BASEFILENAME="flatcar_production_update.gz"
Expand All @@ -216,6 +223,7 @@ else
ln -fs "$(readlink -f "${DOWNLOAD_FILE}")" "/var/tmp/flatcar-update/${BASEFILENAME}"
fi
done
set -u
fi

BASE="http://localhost:${LISTEN_PORT_2}/"
Expand All @@ -229,7 +237,10 @@ tee /tmp/response > /dev/null <<-EOF
EOF


# bash 4.3 compat for VAR[@] if VAR is ()
set +u
for DOWNLOAD_FILE in "$PAYLOAD" "${EXTENSIONS[@]}"; do
set -u
HASH=$(openssl dgst -binary -sha1 < "${DOWNLOAD_FILE}" | base64)
SIZE=$(stat -L --printf='%s\n' "${DOWNLOAD_FILE}")
BASEFILENAME="$(basename -- "${DOWNLOAD_FILE}" | sed 's/flatcar_test_update-//g')"
Expand All @@ -247,6 +258,7 @@ for DOWNLOAD_FILE in "$PAYLOAD" "${EXTENSIONS[@]}"; do
<package name="${BASEFILENAME}" hash="${HASH}" ${OPTHASH256} size="${SIZE}" required="${REQUIRED}"></package>
EOF
done
set -u

SHA256=$(openssl dgst -binary -sha256 < "$PAYLOAD" | base64)
tee -a /tmp/response > /dev/null <<-EOF
Expand Down