The rest of our scripts have been using `openssl dgst` rather than tools like `md5sum` for some time, so convert this one too. We also make the following other adjustments: * Use a `find -print0 | xargs -0` pipeline so paths with spaces and or newlines don't totally kill us. * Ensure the files we write out contain only paths relative to the database root, where we know the filenames should all be sane. * Remove use of `diff`, this was the only time we used it in scripts and we can get a cheap substitute by comparing file checksums instead. * Only touch the local/ part of the database. It makes little sense to do anything to the sync/ directory anymore as they are compressed single files that should be regularly written out in full and won't be fragmented on any sane filesystem. Signed-off-by: Dan McGee --- scripts/pacman-optimize.sh.in | 45 +++++++++++++++++++++-------------------- 1 file changed, 23 insertions(+), 22 deletions(-) diff --git a/scripts/pacman-optimize.sh.in b/scripts/pacman-optimize.sh.in index d80435c..4a84c0b 100644 --- a/scripts/pacman-optimize.sh.in +++ b/scripts/pacman-optimize.sh.in @@ -88,9 +88,8 @@ if [[ -n $1 ]]; then dbroot="$1" fi -# make sure diff is installed -if ! type diff >/dev/null 2>&1; then - die "$(gettext "diff tool was not found, please install diffutils.")" +if ! type -p openssl >/dev/null; then + die "$(gettext "Cannot find the %s binary required for verifying integrity.")" "openssl" fi if [[ ! -d $dbroot || ! -d $dbroot/local ]]; then @@ -103,8 +102,8 @@ fi # strip any trailing slash from our dbroot dbroot="${dbroot%/}" -# form the path to our lockfile location lockfile="${dbroot}/db.lck" +localdb="${dbroot}/local" # make sure pacman isn't running if [[ -f $lockfile ]]; then @@ -118,37 +117,39 @@ workdir=$(mktemp -d "${TMPDIR:-/tmp}/pacman-optimize.XXXXXXXXXX") || # step 1: sum the old db msg "$(gettext "MD5sum'ing the old database...")" -find "$dbroot" -type f | sort | xargs md5sum > "$workdir/pacsums.old" +(cd "$localdb" && find . -type f -print0 | \ + xargs -0 openssl dgst -md5 | sort > "$workdir/pacsums.old") # step 2: tar it up -msg "$(gettext "Tar'ing up %s...")" "$dbroot" -bsdtar -czf "$workdir/pacman-db.tar.gz" -C "$dbroot" ./ +msg "$(gettext "Tar'ing up %s...")" "$localdb" +bsdtar -czf "$workdir/pacman-db.tar.gz" -C "$localdb" ./ if (( $? )); then rm -rf "$workdir" - die_r "$(gettext "Tar'ing up %s failed.")" "$dbroot" + die_r "$(gettext "Tar'ing up %s failed.")" "$localdb" fi # step 3: make and sum the new db side-by-side with the old msg "$(gettext "Making and MD5sum'ing the new database...")" -mkdir "$dbroot.new" -bsdtar -xpf "$workdir/pacman-db.tar.gz" -C "$dbroot.new" +mkdir "$localdb.new" +bsdtar -xpf "$workdir/pacman-db.tar.gz" -C "$localdb.new" if (( $? )); then rm -rf "$workdir" - die_r "$(gettext "Untar'ing %s failed.")" "$dbroot" + die_r "$(gettext "Untar'ing %s failed.")" "$localdb" fi # immediate sync following extraction should get it written continuously on HDD msg "$(gettext "Syncing database to disk...")" sync -find "$dbroot.new" -type f | sort | \ - xargs md5sum | sed 's#.new##' > "$workdir/pacsums.new" +(cd "$localdb.new" && find . -type f -print0 | \ + xargs -0 openssl dgst -md5 | sort > "$workdir/pacsums.new") # step 4: compare the sums msg "$(gettext "Checking integrity...")" -diff "$workdir/pacsums.old" "$workdir/pacsums.new" >/dev/null 2>&1 -if (( $? )); then +read -ra old_dgst < <(openssl dgst -md5 < "$workdir/pacsums.old") +read -ra new_dgst < <(openssl dgst -md5 < "$workdir/pacsums.new") +if [[ ${old_dgst[@]:(-1)} != ${new_dgst[@]:(-1)} ]]; then # failed # leave our pacman-optimize tmpdir for checking to see what doesn't match up - rm -rf "$dbroot.new" + rm -rf "$localdb.new" die_r "$(gettext "Integrity check FAILED, reverting to old database.")" fi @@ -156,15 +157,15 @@ fi msg "$(gettext "Rotating database into place...")" fail=0 -mv "$dbroot" "$dbroot.old" || fail=1 -mv "$dbroot.new" "$dbroot" || fail=1 -chmod --reference="$dbroot.old" "$dbroot" || fail=1 -chown --reference="$dbroot.old" "$dbroot" || fail=1 +mv "$localdb" "$localdb.old" || fail=1 +mv "$localdb.new" "$localdb" || fail=1 +chmod --reference="$localdb.old" "$localdb" || fail=1 +chown --reference="$localdb.old" "$localdb" || fail=1 if (( fail )); then # failure with our directory shuffle - die_r "$(gettext "New database substitution failed. Check for $dbroot,\n$dbroot.old, and $dbroot.new directories.")" + die_r "$(gettext "New database substitution failed. Check for %s, %s, and %s directories.")" "$localdb" "$localdb.old" "$localdb.new" fi -rm -rf "$dbroot.old" +rm -rf "$localdb.old" # remove the lock file and our working directory with sums and tarfile rm -f "$lockfile" -- 1.7.9.3