blob: fb6bb4d1afae4a2b124bc019f7db5870b9426a0e [file] [log] [blame]
#!/bin/bash
# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
[ -z "${gbmc_upgrade-}" ] || exit
: "${GBMC_UPGRADE_SIG=/tmp/bmc.sig}"
gbmc_upgrade_hook() {
[ -n "${bootfile_url-}" ] || return
local tmpdir
tmpdir="$(mktemp -d)" || return
gbmc_upgrade_internal || true
# SC doesn't know our variable is defined elsewhere
# shellcheck disable=SC2153
rm -rf -- "$tmpdir" "$GBMC_UPGRADE_SIG" "$GBMC_UPGRADE_IMG"
}
gbmc_upgrade_fetch() (
echo "Fetching $bootfile_url" >&2
# We only support tarballs at the moment, our URLs will always denote
# this with a URI query param of `format=TAR`.
if ! [[ "$bootfile_url" =~ [\&?]format=TAR(&|$) ]]; then
echo "Unknown upgrade unpack method: $bootfile_url" >&2
return 1
fi
# Ensure some sane output file limit
# Currently no BMC image is larger than 64M
ulimit -H -f $((96 * 1024 * 1024)) || return
wget -q -O - "$bootfile_url" | tar -xC "$tmpdir" || true
local sig
sig="$(find "$tmpdir" -name 'image-*.sig')" || return
local img="${sig%.sig}"
mv "$sig" "$GBMC_UPGRADE_SIG" || return
mv "$img" "$GBMC_UPGRADE_IMG" || return
# Regular packages have a VERSION file with the image
local imgdir="${sig%/*}"
if [ -f "$imgdir/VERSION" ]; then
cat "$imgdir/VERSION" || return
fi
# Staging packages have a directory named after the version
local vdir="${imgdir##*/}"
if [[ "$vdir" =~ ([0-9]+[.]){3}[0-9]+ ]]; then
echo "$vdir"
fi
)
GBMC_BR_DHCP_HOOKS+=(gbmc_upgrade_hook)
gbmc_upgrade=1