diff options
Diffstat (limited to 'resources/scripts')
| -rwxr-xr-x | resources/scripts/blobs/download | 65 |
1 files changed, 59 insertions, 6 deletions
diff --git a/resources/scripts/blobs/download b/resources/scripts/blobs/download index 78bb42b7..9606aa8d 100755 --- a/resources/scripts/blobs/download +++ b/resources/scripts/blobs/download @@ -5,6 +5,9 @@ # SPDX-FileCopyrightText: 2023 Leah Rowe <info@minifree.org> # SPDX-License-Identifier: GPL-3.0-only +_7ztest="a" +mecleaner="$(pwd)/me_cleaner/me_cleaner.py" +me7updateparser="$(pwd)/resources/blobs/me7_update_parser.py" board="${1}" # A shorthand for each board, to avoid duplicating configs per flash size board_short=${board%%_*mb} @@ -114,8 +117,6 @@ Download_me() { Fetch_update() { printf "Fetching vendor update for board: `%s`\n" ${board} - _me_destination=${CONFIG_ME_BIN_PATH#../../} - if [ -z "${dl_url+x}" ]; then printf "No vendor update specified for board: `%s`\n" ${board} return 1 @@ -146,6 +147,8 @@ Vendor_checksum() { Extract_me(){ printf "Extracting neutered ME for ${board}\n" + _me_destination=${CONFIG_ME_BIN_PATH#../../} + if [ ! -d "${_me_destination%/*}" ]; then mkdir -p ${_me_destination%/*} fi @@ -160,11 +163,61 @@ Extract_me(){ fi printf 'extracting and stripping intel management engine\n' - innoextract blobs/me.exe -d blobs || Fail 'could not extract me executable with innoextract' - ./me_cleaner/me_cleaner.py -r -t -O ${_me_destination} blobs/app/*ME*.bin \ - || ./resources/blobs/me7_update_parser.py -O ${_me_destination} blobs/app/ME7*.bin \ - || return 1 + innoextract blobs/me.exe -d blobs \ + || 7z x blobs/me.exe -oblobs/app \ + || Fail 'could not extract me executable with innoextract' + + Bruteforce_extract_me "$(pwd)/${_me_destination}" "$(pwd)/blobs/app" \ + || return 1 + printf "Truncated and cleaned me output to ${_me_destination}\n" + return 0 +} + +# cursed, carcinogenic code. TODO rewrite it better +Bruteforce_extract_me() { + _me_destination="${1}" + cdir="${2}" # must be an absolute path, not relative + + if [ -f "${_me_destination}" ]; then + return 0 + fi + + ( + printf "Entering %s\n" "${cdir}" + cd "${cdir}" || exit 1 + for i in *; do + if [ -f "${_me_destination}" ]; then + # me.bin found, so avoid needless further traversal + break + elif [ -L "${i}" ]; then + # symlinks are a security risk, in this context + continue + elif [ -f "${i}" ]; then + "${mecleaner}" -r -t -O "${_me_destination}" "${i}" \ + && break # (we found me.bin) + "${me7updateparser}" -O ${_me_destination} "${i}" \ + && break + _7ztest="${_7ztest}a" + 7z x "${i}" -o${_7ztest} || continue + Bruteforce_extract_me "${_me_destination}" "${cdir}/${_7ztest}" + cdir="${1}" + cd "${cdir}" + elif [ -d "$i" ]; then + Bruteforce_extract_me "${_me_destination}" "${cdir}/${i}" + cdir="${1}" + cd "${cdir}" + else + printf "SKIPPING: %s\n" "${i}" + fi + done + ) + if [ ! -f "${_me_destination}" ]; then + printf "me.bin not found in vendor update for board: `%s`\n" ${board} + return 1 + else + return 0 + fi } Main |