c_meyer/pirogue-images
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add checksum-based safeguard.

Browse Source
This commit is contained in:
Cyril Brulebois 2024-07-23 13:22:39 +02:00
parent 72f6646fb5
commit 0cf916730f
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
build-images
View File

@ -25,6 +25,15 @@ TOP_DIR=$(pwd)
# - prefer parallel compression if available: # - prefer parallel compression if available:
xz_compress() { xz_compress() {
FILE="$1" FILE="$1"
# PTS images are published as compressed images alongside checksums for those
# compressed images (as opposed to checksums for the uncompressed images). To
# make sure everything is consistent, compare checksum of the original file
# vs. checksum of a decompressed compressed image:
printf 'Computing checksum for %s...' "$FILE"
SUM1=$(sha256sum "$FILE" | awk '{print $1}')
echo " $SUM1"
if which pixz >/dev/null 2>&1; then if which pixz >/dev/null 2>&1; then
printf 'Compressing %s with pixz...' "$FILE" printf 'Compressing %s with pixz...' "$FILE"
pixz "$FILE" pixz "$FILE"
@ -34,6 +43,15 @@ xz_compress() {
xz "$FILE" xz "$FILE"
echo ' done' echo ' done'
fi fi
printf 'Computing checksum for %s after decompression...' "$FILE"
SUM2=$(xz -c -d "$FILE.xz" | sha256sum | awk '{print $1}')
if [ "$SUM1" = "$SUM2" ]; then
echo " $SUM2 (match)"
else
echo " $SUM2 (NO MATCH), exiting!"
exit 1
fi
} }
# - compute checksum and remember both target file and checksum file: # - compute checksum and remember both target file and checksum file: