| #!/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: $bootfile_url" >&2 |
| return 1 |
| fi |
| |
| # Determine the path of the image file for the correct machine |
| # Our netboot can serve us images for multiple models |
| local machine |
| machine="$(source /etc/os-release && echo "$OPENBMC_TARGET_MACHINE")" || return |
| |
| # Ensure some sane output file limit |
| # Currently no BMC image is larger than 64M |
| ulimit -H -f $((96 * 1024 * 1024)) || return |
| timeout=$((SECONDS + 120)) |
| while (( SECONDS < timeout )); do |
| local st=(0) |
| wget -q -O - "$bootfile_url" | tar -xC "$tmpdir" "firmware-gbmc/$machine" || st=("${PIPESTATUS[@]}") |
| (( st[0] != 0 )) || break |
| (shopt -s nullglob dotglob; rm -rf -- "${tmpdir:?}"/*) |
| sleep 5 |
| done |
| |
| local sig |
| sig="$(find "$tmpdir" -name 'image-*.sig' | head -n 1)" || return |
| local img="${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 "$imgdir/VERSION" || return |
| return 0 |
| fi |
| |
| # Staging packages have a directory named after the version |
| local vdir="${imgdir##*/}" |
| if [[ "$vdir" =~ ([0-9]+[.]){3}[0-9]+ ]]; then |
| echo "$vdir" |
| return 0 |
| fi |
| |
| return 1 |
| ) |
| |
| GBMC_BR_DHCP_HOOKS+=(gbmc_upgrade_hook) |
| |
| gbmc_upgrade=1 |